What is new additives Plastics Additives

I.e. anti-oxidants. At room temperature and higher temperatures, most polymers ranging occurs speed automatic oxidation reaction, which causes yellowing of plastic, degradation and strength decrease, who can inhibit or delay the reaction of the substance can be referred to as an antioxidant . 1918 began with the oxidation of phenols inhibit the rubber. 1930 alkylphenols, such as p-phenylene diamine antioxidant original modern varieties gradually come out.Plasticizer for PVC
Although the amount of antioxidants in plastics less (0.1% to 1.0%), but it is a polyolefin, a styrene resin, polyvinyl chloride, polyamide, polyacetal important large tonnage plastics additives. In the rubber industry, antioxidants are still commonly called antioxidant. Mainly phenolic antioxidants for plastics and thiodipropionate primary antioxidant, phosphite secondary antioxidants.Impact modifier for PVC
Primary antioxidants known chain terminating agent, its function is to capture the oxidative degradation of the active free radicals generated, thereby interrupting the chain degradation reaction, cultivars, 2,6 - di-tert-butyl-4 - methylphenol ( Antioxidant 264), and tetrakis [3 - (3 ', 5'-di-t-butyl-4 - hydroxyphenyl) propionate] (antioxidant 1010). Secondary antioxidant known as peroxide decomposers, its role is to oxidative degradation products of decomposition of an intermediate non-radical products. Dilauryl thiodipropionate and monophenyl phosphite diisooctyl is the most common secondary antioxidant. Primary and secondary antioxidants often and used to achieve synergy.