Engineering plastics are diverse and widely used, and their excellent properties are often used to replace metal materials. Many friends in the plastics industry are often troubled by the fact that they cannot correctly distinguish the characteristics of different varieties of plastics when choosing the types of raw materials. Below, will be from the basic performance, processing performance and use of three aspects for you to introduce the various varieties of engineering plastics.

common engineering plastics

1, polyamide PA

basic properties

: the proportion of PA6-1.14 g/cm&sup 3; , PA66-1.15g/cm³ , PA1010-1.05g/cm³

the molding shrinkage:, PA66, PA6-0.8-2.5% - 1.5-2.2%

the molding temperature: 220-300 ¡æ

dry conditions: 100-110¡æ, 12 hours

Material properties

Tough, wear-resistant, oil resistant, water resistant, resistant to enzyme bacteria, but large water absorption. Nylon 6 good elasticity, high impact strength, water absorption; Nylon 66 performance is better than nylon 6, high strength, good wear resistance; Nylon 610 is similar to nylon 66, but has low water absorption and low stiffness; Nylon 1010 is translucent, absorbs less water, and has better cold resistance.

Molding characteristics

1, high melting point of crystallization, narrow melting temperature range, poor thermal stability, material temperature of more than 300 degrees, retention time of more than 30 minutes that decomposition. It is easy to absorb moisture, need to dry, and the water content shall not exceed 0.3%;

2, good fluidity, easy to overflow. Self-locking nozzle should be used, and should be heated;

3, the forming shrinkage range and shrinkage rate are large, the directivity is obvious, and the shrinkage hole and deformation are easy to occur;

4, mold temperature according to the thickness of the plastic parts in the range of 20-90 degrees, injection pressure according to the type of injection machine, material temperature, plastic parts shape and size, mold pouring system selected, molding cycle according to the thickness of the plastic parts selected. When the viscosity of the resin is small, the injection and cooling time should be long, and white oil should be used as a release agent;

5, the form and size of the mold pouring system, increasing the size of the runner and gate can reduce shrinkage.

Scope of application

Production of general mechanical parts, wear reduction parts, transmission parts, and chemical, electrical appliances, meters and so on.

2, polycarbonate (PC)

basic properties

weight: 1.18 to 1.20 g/cm&sup 3;

the molding shrinkage rate: 0.5 0.8%

the molding temperature: 230-320 ¡æ

dry conditions: 110-120¡æ, 8 hours

Material performance

High impact strength, good dimensional stability, colorless transparent, good coloring, electrical insulation, corrosion resistance, wear resistance, but poor self-lubrication, a tendency to stress cracking, high temperature easy hydrolysis, and other resin compatibility is poor.

Molding characteristics

1, amorphous material, good thermal stability, wide molding temperature range, poor fluidity. Small hygroscopic, but sensitive to water, must be dried. Forming shrinkage rate is small, easy to melt cracking and stress concentration, so should strictly control the forming conditions, plastic parts must be annealed;

2, the melting temperature is high, the viscosity is high, more than 200g plastic parts should use a heated extension nozzle;

3, the cooling speed is fast, the mold pouring system is rough and short as the principle, should be set up cold material well, the gate should be large, the mold should be heated;

4, the material temperature is too low will cause the lack of material, the plastic parts are lusterless, the material temperature is too high, the plastic parts are bubbling. When the mold temperature is low, the shrinkage rate, elongation, impact strength is high, and the bending, compressive and tensile strength is low. When the mold temperature exceeds 120 degrees, the plastic parts cool slowly and are easy to deform and stick to the mold.

Scope of application

Production of instrument small parts, insulation transparent parts and impact resistant parts.

3, POM POM

basic properties

weight: 1.41 to 1.43 g/cm&sup 3;

the molding shrinkage rate: 1.2 3.0%

the molding temperature: 170-200 ¡æ

dry conditions: 80-90¡æ, 2 hours

Material properties

Good comprehensive performance, high strength, high stiffness, good wear resistance, small water absorption, good dimensional stability, but poor thermal stability, easy to burn, easy to age in the atmosphere exposure.

Molding characteristics

1, crystallizing material, narrow melting range, melting and solidification fast, the material temperature is slightly lower than the melting temperature that crystallization occurs. Medium fluidity. Low moisture absorption, can not be dried;

2, the friction coefficient is low, the elasticity is good, the surface of plastic parts is easy to produce wrinkles pattern surface defects;

3, easy to decompose, decomposition temperature of 240 degrees. When decomposed, irritating and corrosive gas occurs. Therefore, the mold steel should be made of corrosion-resistant materials.

Scope of application

The production of anti-wear parts, transmission parts, as well as chemical, instrument and other parts.

4, polyphenylene ether PPO

basic properties

weight: 1.07 g/cm&sup 3;

the molding shrinkage rate: 0.3 0.8%

the molding temperature: 260-290 ¡æ

dry conditions: 130 ¡æ, 4 hour

material performance

1, the white particles. Good comprehensive performance, can be used in 120 degrees of steam, good electrical insulation, small water absorption, but there is a tendency to stress cracking. Modified polyphenyl ether can eliminate stress cracking;

2, has outstanding electrical insulation and excellent water resistance, good dimensional stability. Its dielectric properties rank first in plastics;

3, MPPO is the modified material of PPO and HIPS blend, the materials on the market are this kind of material;

4, has a high heat resistance, glass transition temperature 211 degrees, melting point 268 degrees, heating to 330 degrees have a tendency to decompose, the higher the content of PPO the better the heat resistance, thermal deformation temperature can reach 190 degrees;

5, good flame retardancy, with self-interest, and HIPS mixed with medium flammability. Light weight, non-toxic can be used in food and drug industry. Poor light resistance, will change color when used in sunlight for a long time;

6, can be blended with ABS, HDPE, PPS, PA, HIPS, glass fiber, etc.

Molding characteristics

1, non-crystalline material, small moisture absorption;

2, poor fluidity, similar to Newtonian fluid, viscosity is more sensitive to temperature, product thickness is generally above 0.8mm. It is easy to decompose and produce corrosive gas when decomposed. The molding temperature should be strictly controlled, the mold should be heated, and the resistance of the pouring system to the material flow should be small;

3, the water absorption rate of polyphenyl ether is very low about 0.06%, but a trace of water will lead to the surface of the product silver wire and other non-smooth phenomenon, it is best to dry treatment, the temperature can not be higher than 150 degrees, otherwise the color will change;

4, the molding temperature of polyphenyl ether is 280-330 degrees, and the molding temperature of modified polyphenyl ether is 260-285 degrees.

Scope of application

Production of heat resistant parts, insulation parts, wear resistance parts, transmission parts, medical and electronic parts; Can be used in higher temperature gear, blade, valve and other parts, can be used instead of stainless steel; Screws, fasteners and connectors can be made; Motor, rotor, shell, transformer electrical parts.

5, thermoplastic polyester

Polyethylene terephthalate PET

Basic properties

Previously mostly used as fiber, that is, polyester fiber, now to engineering plastics, packaging plastics rapid development. According to the different uses, PET can be divided into fiber grade, film grade, blown bottle grade and reinforcement.

Material properties

1, colorless transparent or milky translucent solid;

2, has a high tensile strength, stiffness and hardness, but has a certain flexibility, good wear resistance, creep resistance, and can maintain these good mechanical properties in a wide temperature range;

3, with excellent electrical insulation;

4, has excellent weather resistance, in outdoor exposure for six years, its mechanical properties can still maintain the initial 80%;

5, weak acid resistance, organic solvents and oils have good chemical stability.

Scope of application

1, the production of film, sensitive film, such as film film base, photographic film film;

2, as food, medicine, textiles, precision instruments, electrical components and other packaging, the production of hollow containers with high strength, good transparency, non-toxic and tasteless, carbonated beverages, beer, edible oil and other widely used plastic packaging materials; Electrical materials;

3, used to make a variety of electrical insulation materials, such as wires, switches, electrical shell and so on.

poly (butanediol terephthalate) PBT

Basic properties

PBT used as engineering plastics have unmodified and modified two kinds, unmodified grade molding shrinkage rate is large, mechanical properties are not as good as other engineering plastics, so rarely used alone. Nearly 80% of PBT is modified.

Material properties

1, for the milky crystalline solid, tasteless, odorless, non-toxic, the surface of the product has a luster. The flexibility is better than PET, melting temperature and rigidity are relatively small;

2, with excellent electrical insulation. Even in the wet and harsh environment can be maintained;

3, has good weather resistance;

4, can resist the corrosion of general chemicals, such as weak acid and so on.

Scope of application

1, make a variety of auto parts, such as door handles, bumpers, rearview mirror shell, etc.;

2, make electronic and electrical parts, such as connectors, sockets, plugs, fuse boxes, etc.;

3, make all kinds of electrical shell and components, such as telephone, indoor and outdoor lighting appliance shell, hair dryer components, etc.

6, ultra high molecular weight polyethylene UHMWHPE

Basic properties

Relative molecular weight of more than 1.5 million, comprehensive for conventional molecular weight polyethylene does not have special engineering plastics. The molecular structure is exactly the same as that of ordinary polyethylene, but the molecular weight is particularly high. In the relative molecular mass of more than 1.5 million UHMWPE, there are relative molecular mass of 2 million, 3 million, and even up to more than 5 million grades.

Material properties

1, the average molecular weight of about 350,000 ~ 8 million, because of high molecular weight and has other plastics unparalleled excellent impact resistance, wear resistance, self-lubrication, chemical corrosion resistance and other properties;

2, excellent low temperature resistance, still has a high impact strength at -40¡æ, and can even be used at -269¡æ;

3, with electrical insulation, low water absorption and physiological inertia;

4, with excellent stress cracking resistance, creep resistance and fatigue resistance.

Scope of application

Used in machinery, transportation, textile, paper, mining, agriculture, chemical industry and sports equipment and other fields, in which large packaging containers and pipelines are the most widely used; Because of its excellent physiological inertia, it has been used in clinical medicine as a heart valve, orthopaedic surgical parts, artificial joints, etc.

7, thermoplastic

poly acrylonitrile - butadiene - styrene ABS

basic properties

weight: 1.05 g/cm&sup 3;

the molding shrinkage rate: 0.4 0.7%

the molding temperature: 200-240 ¡æ

dry conditions: 80-90 ¡æ, 2 h

material performance

1, the comprehensive performance is good, high impact strength, chemical stability, good electric properties;

2, good welding with 372 plexiglass, can be made of two-color plastic parts, and can be chrome plated on the surface, spray painting treatment;

3, with high impact resistance, high heat resistance, flame retardant, enhancement, transparency and other levels;

4, fluidity than HIPS, better than PMMA, PC, etc., good flexibility.

Molding characteristics

1, amorphous material, medium fluidity, large moisture absorption, must be fully dry, the surface requirements of glossy plastic parts must be preheated for a long time to dry 80-90 degrees, 3 hours;

2, suitable for high material temperature, high mold temperature, but the material temperature is too high and easy to decompose (decomposition temperature is > 270 degrees), for high precision plastic parts, mold temperature is suitable for 50-60 degrees, for high gloss, heat resistant plastic parts, mold temperature is suitable for 60-80 degrees;

3, if you need to solve the water pattern, it is necessary to improve the fluidity of the material, take high material temperature, high mold temperature, or change the water level and other methods;

4, such as forming heat-resistant or flame-retardant grade materials, 3-7 days after the production of the mold surface will remain plastic decomposition, resulting in the mold surface shiny, the mold needs to be cleaned in time, while the mold surface needs to increase the exhaust position.

Scope of application

Production of general mechanical parts, anti-wear parts, transmission parts and telecommunications parts.

special engineering plastic

8, PPS, PPS

basic properties

weight: 1.36 g/cm³

Molding shrinkage: 0.7%

Molding temperature: 300-330¡æ

Material properties

1, electrical insulation (especially high frequency insulation) excellent, white, hard and brittle, falling on the ground with metal sound, light transmittance second only to plexiglass, color resistance to water, good chemical stability. Has excellent flame retardancy, for non-combustible plastic;

2, the strength is general, the rigidity is very good, but the quality is brittle, easy to produce stress brittle cracking; Not resistant to benzene, gasoline and other organic solvents; Long-term use temperature can reach 260 degrees, in 400 degrees of air or nitrogen to maintain stability. By adding glass fiber or other reinforcement material modification, can greatly improve the impact strength, heat resistance and other mechanical properties have also been improved, the density increased to 1.6-1.9g/cm³ The molding shrinkage rate is smaller to 0.15-0.25%.

Molding characteristics

1, amorphous material, small moisture absorption, but it should be formed after drying;

2, fluidity between ABS and PC, solidification fast, shrink, easy to decompose, choose a higher injection pressure and injection speed. The mold temperature is 100-150 degrees. The taper of the main channel should be large and the flow channel should be short.

Scope of application

Production of heat-resistant parts, insulation parts and chemical instruments, optical instruments and other parts. Such as: TV, computer high voltage components, shell, motor starting coil, blade, brush bracket and rotor insulation parts, relays, electric iron, F film and so on. Automobile can produce exhaust gas recirculation valve and water pump impeller, bearing, sensing parts, etc.

9, polysulfone PSF or PSU

basic properties

weight: 1.25 to 1.35 g/cm&sup 3;

the molding shrinkage rate: 0.5 0.7%

the molding temperature: 290-350 ¡æ

dry conditions: 130-150¡æ, hour

Material properties

1, polysulfone is amber transparent solid material, high hardness and impact strength, non-toxic, heat and cold resistance good aging resistance, can be used for a long time at -100--175 degrees. Resistance to inorganic acid, alkali and salt corrosion, but not resistant to aromatic hydrocarbons and halogenation;

2, through glass fiber reinforced modification can make the wear resistance of the material greatly improved;

3, can be made of polysulfone and ABS, polyimide, polyether-ether ketone and fluorine plastics into polysulfone modified products, mainly to improve its impact strength and elongation, solvent resistance, environmental resistance, processing performance and electroplating performance. Such as PSF/PBT, PSF/ABS, PSF+ mineral powder.

Molding characteristics

1, amorphous material, large moisture absorption, water absorption rate of 0.2%-0.4%, before use must be fully dry, and prevent moisture absorption. Ensure that the water content is below 0.1%;

2, the molding performance is similar to PC, poor thermal stability, decomposition begins at 360 degrees;

3, poor fluidity, cooling fast, it is appropriate to use high temperature and high pressure molding. The mold should have enough strength and stiffness, set a cold feed well, the flow channel should be short, and the gate size should be 1/2-1/3 of the wall thickness of the plastic parts;

4, in order to reduce the internal stress of injection molded products, the mold temperature should be controlled at 100-140 degrees. After molding can be taken annealing treatment glycerol bath annealing treatment, 160 degrees, 1-5 minutes; Or take air bath 160 degrees, 1-4 hours. The annealing time depends on the size and wall thickness of the article;

5, polysulfone in the molten state close to the Newtonian body, similar to polycarbonate, the fluidity is more sensitive to temperature, in 310 degrees -420 degrees, the temperature every 30 degrees, the fluidity will increase 1 times. Therefore, when forming, the processing fluidity is improved mainly by increasing the temperature.

Scope of application

1, suitable for the production of heat-resistant parts, insulation parts, anti-wear wear parts, instrument parts and medical equipment parts, also suitable for the production of low-temperature working parts;

2, polysulfone in the electronic and electrical industry is often used in the manufacture of integrated circuit board, coil tube frame, contactor, sleeve frame, capacitive film, high-performance alkali battery shell;

3, polysulfone in household appliances used in microwave oven equipment, coffee heater, humidifier, hair dryer, cloth steamer, beverage and food dispenser. It can also replace non-ferrous metal used in watches, copiers, cameras and other precision structural parts;

4, polysulfone has passed the relevant specifications in the field of medicine and food in the United States, can replace stainless steel products, used as surgical tool trays, sprayer, fluid controller, heart valve, pacemaker, gas mask, dental brackets, etc.

10, fluoroplastic

Fluoroplastic is part or all of the hydrogen is replaced by fluorine alkyl polymer, They are polytetrafluoroethylene (PTFE), perfluoroethylene propylene (FEP) copolymer, polyperfluoroalkoxy (PFA) resin, polytrifluorochloroethylene (PCTFF), ethylene-trifluorochloroethylene copolymer (ECTFE), ethylene-tetrafluoroethylene (ETFE) copolymer, polyvinylidene fluoride (PVDF) and polyvinyl fluoride (PVF).

teflon PTFE

basic properties

weight: 2.1 to 2.2 g/cm&sup 3;

Molding shrinkage: 3.1-7.7%

Molding temperature: 330-380¡æ

Material properties

1, long-term use temperature -200--260 degrees, has excellent chemical resistance, corrosion resistance to all chemicals, friction coefficient is the lowest in plastics, there are very good electrical properties, its electrical insulation is not affected by temperature, there is "plastic king" said;

2, transparent or translucent state, the higher the degree of crystallinity, the worse the transparency. Raw materials are mostly powdery resin or concentrated dispersion, with extremely high molecular weight, thermoplastic polymer with high crystallinity.

Molding characteristics

1, crystallizing material, small moisture absorption;

2, poor fluidity, easy to decompose, decomposition of corrosive gas. It is appropriate to strictly control the molding temperature, the mold should be heated, and the gating system should have small resistance to the material flow;

3, powder resin is often formed by powder metallurgy, the use of sintering method. Sintering temperature 360-380 degrees, not more than 475 degrees. Emulsion resin is usually processed by cold extrusion and re-sintering process, which can form an anti-corrosion layer on the surface of the article. If the transparency of the product is required and the toughness is good, rapid cooling should be taken. Can also take extrusion molding, can be extruded pipe, rod, profile;

4, PTFE melt viscosity is very high, the viscosity of the volume decreases with the increase of shear stress, showing its non-Newtonian fluid characteristics;

5, secondary processing, can be hot pressed composite, welding, bonding, strengthening, machining, etc., to make the final product.

Scope of application

Production of corrosion-resistant parts, wear reduction parts, seals, insulation parts and medical equipment parts.

ptfe - ethylene copolymer ETFE

basic properties

weight: 1.7 g/cm&sup 3;

Molding shrinkage: 3.1-7.7%

Molding temperature: 300-330¡æ

Material properties

1, long-term use temperature -80--220 degrees, has excellent chemical resistance, corrosion resistance to all chemicals, friction coefficient is the lowest in plastics, there are very good electrical properties, its electrical insulation is not affected by temperature, there is "plastic king" said;

2, its chemical resistance is similar to polytetrafluoroethylene, better than vinylidene fluoride;

3, its creep resistance and compressive strength are better than polytetrafluoroethylene, high tensile strength, elongation up to 100-300%, good dielectric property, excellent radiation resistance.

Molding characteristics

1, crystallizing material, moisture absorption is small. It can be processed into products by the usual thermoplastic processing method;

2, poor fluidity, easy to decompose, decomposition of corrosive gas. It should be strictly controlled that the molding temperature should not exceed 350 degrees, the mold should be heated to 100-150 degrees, and the gating system should have little resistance to the material flow. Can be formed 0.7-0.8mm thick thin-walled simple products;

3, transparent grain, injection molding, extrusion molding. Molding temperature 300-330 degrees, 350 degrees above easy to cause discoloration or bubbles. It is appropriate to form at high speed and low pressure, and note that demoulding will be more difficult.

Scope of application

1, suitable for the production of corrosion resistant parts, wear reduction wear parts, seals, insulation parts and medical equipment parts;

2, wire, cable insulation layer, anti-corrosion equipment, sealing materials, pump valve bushing, and chemical containers.

soluble teflon PFA

basic properties

weight: 2.13 to 2.167 g/cm&sup 3;

the molding shrinkage rate: 3.1 7.7%

the molding temperature: 350-400 ¡æ

material performance

1, for a small amount of perfluorinated propyl perfluorinated vinyl ether copolymer with ptfe. The fusion cohesiveness is enhanced, the viscosity of the solution is decreased, and the performance is unchanged compared with polytetrafluoroethylene. This kind of resin can be directly processed into products by ordinary thermoplastic forming method;

2, long-term use temperature -80--260 degrees, has excellent chemical resistance, corrosion resistance to all chemicals, the coefficient of friction is the lowest in plastics, there are good electrical properties, its electrical insulation is not affected by temperature, known as "plastic king";

3, its chemical resistance and polytetrafluoroethylene similar, better than vinylidene fluoride;

4, its creep resistance and compressive strength are better than polytetrafluoroethylene, high tensile strength, elongation up to 100-300%. Good dielectric property, excellent radiation resistance. Flame retardant up to V0 level.

Molding characteristics

1, crystallizing material, small moisture absorption. It can be processed into products by the usual thermoplastic processing method;

2, poor fluidity, easy to decompose, decomposition of corrosive gas. Should strictly control the molding temperature should not exceed 475 degrees, the mold should be heated to 150-200 degrees, the gating system on the material flow resistance should be small;

3, transparent particle, injection molding, extrusion molding. Molding temperature 350-400 degrees, 475 degrees above easy to cause discoloration or bubbles. And note that demoulding will be more difficult;

4, because the molten material has a corrosive effect on the metal, long-term production, the mold needs electroplating chromium treatment.

Scope of application

1, suitable for the production of corrosion resistant parts, wear resistance parts, seals, insulation parts and medical equipment parts;

2, high temperature wire, cable insulation layer, anti-corrosion equipment, sealing materials, pump valve bushing, and chemical containers.

11, poly aryl ether ketone PEAK

Poly aryl ether ketone (PEAK) is a kind of phenylene ring through the ether bond and carbonyl polymer. At present, there are mainly polyether ether ketone (PEEK), polyether ketone (PEK), polyether ether ketone (PEKK), polyether ether ketone (PEEKK) and polyether ether ketone (PEKEKK) and other varieties. The lower the ratio (E/K) of the ether bond to the keto group in the molecular chain, the higher the melting point and glass transition temperature of the PEEKK series varieties. The ether bond in the molecular structure of polyaryl ether ketone makes it flexible, so it can be molded by the processing method of thermoplastic engineering plastics.

Material properties

1, has good high temperature performance, can be used for a long time temperature above 240¡æ;

2, very high mechanical properties. Excellent chemical corrosion resistance, as well as good radiation resistance, can resist 10MGy γ Ray irradiation;

3, the combustion performance can reach the level of UL94V-0, and the amount of smoke when burning is very small and non-toxic, the heat released when burning is also very little, which is a very important technical performance for the interior decoration of the aircraft;

4, in a wide operating temperature and frequency range has good electrical properties, high frequency wave dielectric loss is small, is an excellent high temperature resistance, high strength of C-class electrical insulation material.

Scope of application

1, more used in the field of aerospace with high technology, or technical requirements are relatively harsh automotive industry, electronic and electrical industry and mechanical industry some structural components;

2, for the aircraft on the flame, oil resistance of various connectors; Weather resistant, creep resistant radome, etc.;

3, used in the automotive industry and machinery industry can withstand dynamic load parts, such as bearing retainer, gear, hot water pump, turbine blade, wear seal ring, etc.;

4, in medical devices, PPEK manufacturing blood dialysis machine heater and pressure sensor shell and need to disinfect dental instruments, PPEK can also replace metal, the production of human bones, the potential application prospects are very attractive.

12, aromatic ester PAR

basic properties

weight: 1.2 to 1.26 g/cm&sup 3;

Molding shrinkage: 0.8%

Molding temperature: 300-350¡æ

Drying conditions: 100 ~ 120¡æ, 5 hours

Material performance

1, for transparent amorphous thermoplastic engineering plastics, with excellent heat resistance, flame retardant and non-toxicity. It can be directly processed into products by ordinary thermoplastic molding methods;

2, with excellent thermal performance, under the load of 1.86MPA, the thermal deformation temperature is as high as 175 degrees, decomposition temperature is 443 degrees. Its various mechanical properties are less affected by temperature.

Molding characteristics

1, with the increase of the wall thickness of the product, the molding shrinkage rate increases;

2, the hygroscopicity is small, about 0.1-0.3%However, trace moisture during injection molding will cause the decomposition of polyaryl. Therefore, the material must be dried before forming. Make its moisture content less than 0.02%;

Scope of application

1, suitable for the production of heat resistance, fire resistance and dimensional stability of high electrical parts. Connector, coil frame, relay housing;

2, lighting parts. It can be made into transparent lampshade, illuminator, car reflector, etc.

13, liquid crystal polymer LCP

Liquid crystal polymer refers to the polymer material that can form a liquid crystal state under certain conditions, referred to as LCP, is one of the fastest developing new materials in recent years. Can be divided into lyotropic type (LLCP) and thermal type (TLCP) two categories. Thermotropic liquid crystal refers to the liquid crystal state in the molten state, which is mainly used as an engineering plastic. According to the temperature grade, it can be divided into three kinds of ultra-heat resistant type, medium heat resistant type and low heat resistant type.

Material properties

1, LCP is high strength, high modulus, creep resistance, high impact resistance of polymer materials, its mechanical properties are much higher than ordinary engineering materials;

2, outstanding wear resistance, high surface hardness, low wear. The molding shrinkage rate is very small, and the processing fluidity is excellent. High thermal stability and heat resistance. Excellent electrical insulation;

3, with excellent chemical stability, UV radiation is also very stable. Has outstanding flame retardancy, generally without adding flame retardants can reach the flame retardant level of UL94V-0, smoke is also very low;

4, also has excellent vibration absorption characteristics, used as a sound component can reduce noise.

Scope of application

1, high-density connector, coil frame, spool, socket, etc.; Audiovisual devices in the speaker vibration plate, earphone switch; Floppy disk, hard disk drive, photocopy and other par

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