Chlorinated polyvinyl chloride composition and pipe preparation method
A technology of chlorinated polyvinyl chloride and composition, which is applied in the field of polymers, can solve problems such as increasing processing difficulty, and achieve the effects of avoiding adverse effects, easy processing, and improving heat resistance
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[0030] The core layer butadiene-styrene polymer of the impact modifier MBS in Example 1, wherein the butadiene content is 12.5%, and the mass ratio of the shell layer methyl methacrylate to butyl methacrylate is 2: 3; The core layer butadiene-styrene polymer of the impact modifier MBS in Examples 2 and 3, wherein the butadiene content is 12%, and the quality of the shell layer methyl methacrylate and butyl methacrylate The ratio is 1.7:3.3; the core layer butadiene-styrene polymer of the impact modifier MBS in Examples 4 and 5, in which the butadiene content is 13.5%, the shell layer methyl methacrylate and methacrylic acid The mass ratio of butyl ester is 2.3:2.7.
[0031] 56%~63% high melting point hindered phenol antioxidant
[0032] In Example 1, the composite antioxidant system hindered phenol antioxidant 330 accounted for 60%, the phosphite antioxidant PEP-36A accounted for 40%, and the composite antioxidant system hindered phenol antioxidant 330 accounted for 40% in Example...
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