Chemically cross-linked polyethylene composition and preparation method thereof
A technology of chemical cross-linking and polyethylene, applied in the field of chemical cross-linking polyethylene composition and its preparation, can solve the problems of increasing the cost of cross-linking agent, decreasing the aging resistance of pipe products, decreasing the cross-linking efficiency, etc. Life, stable and reliable processing technology, and the effect of maintaining cross-linking density
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[0028]With 100 parts by weight of polyethylene resin (high-density polyethylene, HDPE, brand QL-3, Sinopec Qilu Petrochemical Co., Ltd. production), di-tert-butyl peroxide (DTBP, Beijing Guohua Chemical New Material Company production, industrial grade) (see Table 1 for specific consumption), triallyl cyanurate (TAC, produced by Germany Degussa Company, industrial product) (see Table 1 for specific consumption), antioxidant 1076 (Beijing Chemical Industry No. , industrial grade) and 0.3 part of co-antioxidant DSTP (Beijing No. 3 Chemical Factory, industrial grade) were placed in a high-speed mixer (GH-10 type, Beijing Rubber and Plastic Machinery Factory) for stirring treatment, and the treatment time was 10 minutes.
[0029] A plunger extruder (TSXL plunger extruder produced by Korea Taicheng Machinery Co., Ltd.) was used to extrude the above compounded mixture into a peroxide crosslinked HDPE pipe. The specific processing conditions are as follows: (1) The temperature of the...
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