Factors affect PVC heat stabilizers

PVC heat stabilizers to some extent will affect the transparency of PVC. PVC heat stabilizers are also  carbon black not missing PVC additives, no PVC PVC heat stabilizers so will lose a lot of practical value. So people are constantly biochemical studies of PVC heat stabilizers. The following three factors will affect the transparency of PVC PVC heat stabilizers, and we do a discussion. 
1, the refractive index of the stabilizer 
PVC resin, heat stabilizer and 1.52 to 1.55 and a refractive index of visible titanium dioxide  light or near the same, the better the transparency of PVC products, the transparency is low and vice versa. 
2, stabilizer molecules (molecules) of linear length 
Heat stabilizer molecule (or molecules) linear length of less than 400 ~ 735nm wavelength of visible light refraction less transparency higher, whereas less transparent. 
3, a heat stabilizer in PVC, "solubility", i.e., the compatibility of 
Compatibility is two or more substances refers to the affinity of each when mixed. Compatibility is good that it is possible to achieve molecular level dispersion. A thermal stabilizer in the molten state has good compatibility with PVC resin. Do not form a two-phase, which is not obvious  organic pigments interface or interface, refraction less, more transparent PVC products. Liquid stabilizer than the corresponding solid metal soaps in PVC compatibility, the length of the linear molecule and smaller, and thus the higher the transparency of the PVC.