Many plastic polymers in the production process, will add plastic additives, can improve the formability or just change the pigmentation and so on. And each substance contained in the material is part of the overall chemical composition. These substances must be carefully controlled. Different kinds of plastic additives will have different disadvantages and advantages, added to the polymer, so that the polymer has different properties, so that the polymer has greater practical value, to meet the increasing market demand.

Formability additives provide polymer impact resistance

Polymers with difficult formability can be used as lubricants or processing AIDS, which can help the material stick to the metal surface and reduce the amount of energy required to manufacture it. Certain additives, such as acrylic polymers, can improve impact resistance. pvc materials, which can be used in molding or extrusion equipment, are often treated with lubricants, while also serving as processing AIDS and additives. But these additives can contaminate other chemicals through solvents.

More and more polymer materials flooded into the market, a variety of polymer products came into being, and today's polymer products include polymer films, polymer cells, polymer batteries and so on. In terms of characteristics, some polymers are transparent, some have good air tightness, and some have electrical conductivity, semiconductor, magnetism, etc. These excellent characteristics are widely used in various related industrial technology fields.

Improve polymer formability and stability

Different polymers have their own characteristics, some polymers, such as rubber, elastic, others such as lignin or cellulose nitrate, is relatively rigid, can not be exposed to non-solvent material softening. For this reason, plasticizing compounds can be added to the polymer to reduce its hardness, as well as improve its formability. Plasticizers collect groups of molecules between different polymer chains, but do not change the amount of polymer. This limits the movement of the polymer chains less.

Plasticizers usually have a solubility level close to that of the polymer itself, provided that the polymers are compatible with each other and multiple plasticizers can be used in a single mixture. When plasticizer phthalates are introduced into polyvinyl chloride (PVC) polymers, they can reduce their melt viscosity and improve their photostability. The oxidation-resistant acid it provides also makes the polymer more susceptible to fungal contamination and corrosion.

Changing the color of polymer materials

In order to adapt to market needs, polymers can now be made to have different colors by adding pigments. However, some pigments can increase the polymer's susceptibility to chemical reactions, so be careful when choosing pigments. Pigments such as carbon black will not react to form caustics. Clays and other hydrophilic additives are absorbent, which can damage certain polymers. Similarly, carbonate pigments, such as limestone, can make the material susceptible to corrosion by inorganic acids. These effects can be mitigated by other means. Additional adhesives, such as organosilanes, help fill the gap between the pigment and polymer molecules.

UV stabilizers and antioxidants make polymers more stable

Many unsaturated polymers can be degraded by absorption from various sources, such as oxygen, resulting in the release of organic peroxides. To reduce the risk of mechanical and chemical deterioration, phenolic or amine antioxidants can be added to these polymers, while certain pigments and stabilizers are beneficial for UV shielding. Common additives that have these effects are: Hindered phenol: a benzene ring consisting of phenol plus a hydroxyl group. When replaced by hydrogen that is bonded to the heavier element by adjacent carbon atoms, it is converted into a hindered phenolic compound, thus preventing oxidative degradation of polymers such as rubber.

Antioxidants: Secondary amines, including aromatics such as benzene, in their compositions can act as antioxidants to protect the polymer from oxidative deterioration. However, they also react with acids, making them vulnerable to acid corrosion.

Stabilizers: Certain organic polymers have photooxidation, which is deterioration caused by exposure of oxygen to ultraviolet light. Pigments like carbon black and UV stabilizers like hydroxybenzophenone can be added to inhibit the rate of photooxidation.

The future market demand for polymers will increase, which requires the nature of the polymer itself to diversify the development, and a variety of plastic additives will also play a very important role in this development process, so that the diversification of polymer properties, wide range of applications.

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