PVC PVC heat stabilizers factors affecting

PVC heat stabilizers of PVC to a certain extent affect the transparency . PVC heat stabilizers are also PVC additives can not be missing , so no PVC heat stabilizers for PVC will lose a lot of practical value. So people are constantly on the PVC heat stabilizers titanium dioxide  biochemical research . Here polyvinyl chloride PVC heat stabilizers affect the transparency of the three factors , and we do a study . 1, the refractive index of the stabilizer
PVC resin, heat stabilizer and 1.52 to 1.55 of the refractive index of the visible light are the same or similar, then the better the transparency of PVC products , the transparency is low and vice versa .
2 , stabilizer  iron oxide black molecules ( molecules ) of linear length
Heat stabilizer molecule ( or molecules ) linear length is less than 400 ~ 735nm wavelength of visible light refracting fewer higher degree of transparency , whereas less transparent .
3 , a heat stabilizer in PVC , " solubility ", ie a so-called compatibility Compatibility means the mixing of two or more substances mutual affinity. Good compatibility is possible to achieve dispersion of the molecular level . Thermal stabilizer in the molten state has good compatibility with PVC resin . Do not form a two -phase , that is no  liquid stabilizer interface or the interface is not obvious, less refracted light , PVC products, higher transparency . Liquid stabilizer than the corresponding solid metal soap good compatibility in PVC , the linear molecule has a smaller length , and thus the higher the transparency of the PVC .