Macromolecular moisture-proof blocking agent and preparation method thereof
A polymer and plugging agent technology, applied in the field of plugging agents, can solve the problems of the plugging agent’s moisture-proof sealing performance and bonding performance, and reduce the protection effect of production and operation equipment, etc.
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[0030] A preparation method of a polymer moisture-proof sealing agent, comprising the following steps:
[0031] Mix polyphenylene sulfide and carbon fiber, add vinyl acetate, add oxidant in an inert gas atmosphere, adjust the pH to 4-5, stir at 500-550r / min for 40-50min, then rinse with water for 3-5 times, in Dry at 80-90°C to obtain modified polyphenylene sulfide; add silicone rubber, modified epoxy acrylate resin and dimethyl silicone oil to the modified polyphenylene sulfide, and react at 400-450°C for 2-4 hours, During the reaction process, magnetic stirring is used at a stirring speed of 1000-1100r / min, stirring once every 10-15min, stirring for 5-10min each time, and then concentrated under reduced pressure at 0.01-0.05MPa for 30-40min to obtain a polymer moisture-proof plugging agent.
[0032] The toughness, brittleness and medium viscosity of polyphenylene sulfide can be changed by modifying polyphenylene sulfide with carbon fiber and vinyl acetate. Because vinyl ac...
Embodiment 1
[0037] A polymer moisture-proof sealing agent, including the following raw materials: 10g of silicone rubber, 15g of polyphenylene sulfide, 5g of vinyl acetate, 3g of carbon fiber, 10g of modified epoxy acrylate resin and 20g of simethicone.
[0038] A preparation method of a polymer moisture-proof sealing agent, comprising the following steps:
[0039] Mix polyphenylene sulfide and carbon fiber, add vinyl acetate, add an oxidant in an inert gas atmosphere, adjust the pH to 4, and stir at 500r / min for 40min to obtain modified polyphenylene sulfide; Add silicone rubber, modified epoxy acrylate resin and simethicone oil, react at 400°C for 2 hours, and then concentrate under reduced pressure to obtain a polymer moisture-proof sealing agent.
Embodiment 2
[0041] A polymer moisture-proof sealing agent, including the following raw materials: 30g silicone rubber, 40g polyphenylene sulfide, 15g vinyl acetate, 12g carbon fiber, 20g modified epoxy acrylate resin and 40g simethicone oil.
[0042] A preparation method of a polymer moisture-proof sealing agent, comprising the following steps:
[0043] Mix polyphenylene sulfide and carbon fiber, add vinyl acetate, add an oxidant in an inert gas atmosphere, adjust the pH to 5, and stir at 550r / min for 50min to obtain modified polyphenylene sulfide; Add silicone rubber, modified epoxy acrylate resin and simethicone oil, react at 450°C for 4 hours, and then concentrate under reduced pressure to obtain a polymer moisture-proof sealing agent.
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