Polyvinyl chloride (PVC) is a general-purpose resin widely used in industry and civilian use. The formula of PVC products is composed of PVC resin powder, toughening agent (plasticizer), heat stabilizer, processing aid, pigment, filler, lubricant and other components. It contains highly polar, medium polar, weak polar, non-polar polymers or oligomers, as well as hydrophilic inorganic fillers and pigments. The multiphase complex system. Due to the huge difference in surface energy and poor interphase compatibility of PVC multiphase system, it will cause microcracks and interphase stress between PVC phases, resulting in a significant decrease in the mechanical properties of PVC composite materials such as impact toughness and strength, and poor processing performance.

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Characteristics of SP-1800 special super dispersant for PVC

Polyvinyl chloride (PVC) is a general resin widely used in industry and civil use. The formula of PVC products is composed of PVC resin powder, toughening agent (plasticizer), heat stabilizer, processing aid, pigment, filler, lubricant and other components, which contain high polymers or oligomers with strong polarity, medium polarity, weak polarity and non-polarity, as well as multi-phase complex systems of hydrophilic inorganic fillers and pigments. Due to the huge difference in surface energy, the interphase compatibility of PVC multiphase system is not good, which will cause micro cracks and interphase stress between PVC phases, resulting in a significant decrease in mechanical properties such as impact toughness and strength of PVC composite materials, and poor processing performance.

SP-1800 super dispersant is a new type of dispersant of Shanghai Zhehua Chemical Materials Co., Ltd. A large number of anchoring groups in its molecular structure are firmly anchored on the surface of inorganic fillers and pigments, converting hydrophilic fillers and pigments into lipophilic substances. SP-1800 superdispersant has a large molecular weight of dispersed chain and special functions. It can fully integrate complex multiphase systems of strong polarity, medium polarity, weak polarity, non-polar polymers or oligomers, inorganic fillers, and pigments into one, reduce the surface tension between phases, and eliminate the interphase microcracks and interphase stress caused by the interphase compatibility difference in the PVC multiphase system, thereby achieving high performance of PVC composite materials. Features of SP-1800 superdispersant:

Highly efficient dispersibility for inorganic powders and pigments;

Highly efficient reduction of surface tension of phases in PVC multiphase complex systems;

Effectively eliminate microscopic interphase microcracks and interphase stress caused by poor interphase compatibility in PVC multiphase complex systems, greatly improving the mechanical properties of PVC composite materials;

SP-1800 superdispersant efficiently fuses PVC multiphase systems, improving PVC processing performance and surface gloss of PVC products;

The efficient interphase fusion ability of SP-1800 superdispersant can greatly increase the filling amount of inorganic powders in PVC composite materials, and the filling amount can be increased by 50%-100%, greatly reducing enterprise costs.

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