Fluor-containing polymer processing aid, silanes cross-linked polyethylene composition with the processing aid and use of the processing aid
A processing aid, silane cross-linking technology, applied in the field of silane cross-linked polyethylene, can solve problems such as spark failure and breakdown
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Embodiment 1
[0033] In a 500ml four-necked bottle, add 80 grams of methyl methacrylate, 15 grams of butyl acrylate, 5 grams of acrylic acid and 0.5 grams of azobisisobutyronitrile, pre-react at 60 ° C for 1 hour, and then dropwise add 100 grams of vinylidene fluoride- Hexafluoropropylene copolymer dispersion (FKM emulsion L636, 30% solid content, purchased from Solvay SolexisS.P.A), high-speed stirring, add 0.2 grams of hydroxypropyl cellulose and dodecylbenzene 0.1 g of sodium sulfonate in 100 g of deionized water, and adjust the pH value to 6 with 20% sodium hydroxide solution. Raise the temperature to 75°C for 5 hours. After cooling, filter with a 200-mesh filter cloth and dry to obtain 118 grams of particles with an average particle diameter of 4.5 mm. Hereinafter referred to as fluoropolymer A.
Embodiment 2
[0035] In a 500ml four-necked bottle, add 60 grams of methyl methacrylate, 25 grams of butyl acrylate, 15 grams of methacrylic acid and 0.5 grams of azobisisobutylcyanide mixture, pre-react at 60 ° C for 1 hour, and then dropwise add 100 grams of partial Vinyl fluoride-hexafluoropropylene copolymer dispersion (FKM emulsion L636, 30% solid content, purchased from Solvay Solexis S.P.A), stirred at high speed, and then added 0.2 g of hydroxypropyl cellulose dissolved in it, dodecane Add 0.1 g of sodium phenylsulfonate to 100 g of deionized water, and adjust the pH value to 6 with 20% sodium hydroxide solution. Raise the temperature to 75°C for 5 hours. After cooling, filter with a 200-mesh filter cloth and dry to obtain 107.8 grams of particles with an average particle diameter of 4.5 mm. Hereinafter referred to as fluoropolymer B.
Embodiment 3
[0037] In a 500ml four-necked bottle, add 70 grams of methyl methacrylate, 20 grams of butyl acrylate, 10 grams of acrylic acid and 0.5 grams of azobisisobutylcyanide mixture, pre-react at 60 ° C for 1 hour, and then dropwise add 100 grams of vinylidene fluoride - Hexafluoropropylene copolymer dispersion (FKM emulsion L636, 30% solid content, purchased from SolvaySolexis S.P.A), high-speed stirring, add 0.2 grams of hydroxypropyl cellulose and dodecylbenzenesulfonate after the particles are precipitated 100 grams of deionized water with 0.1 gram of sodium hydroxide, and adjust the pH value to 6 with 20% sodium hydroxide solution. Raise the temperature to 75°C for 5 hours. After cooling, filter with a 200-mesh filter cloth, and obtain 113 grams of particles with an average particle diameter of 4.5 mm after drying. Hereinafter referred to as fluoropolymer C.
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