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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.

Inactive Publication Date: 2022-01-21
张俊杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, most of the existing plugging agents are two-component materials, with polyurethane as the main material, and polyurethane materials are prone to bubbles during the curing process, resulting in a decline in the moisture-proof sealing performance and bonding performance of the plugging agent, thereby reducing Protective effect on production and operation equipment

Method used

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  • Macromolecular moisture-proof blocking agent and preparation method thereof
  • Macromolecular moisture-proof blocking agent and preparation method thereof
  • Macromolecular moisture-proof blocking agent and preparation method thereof

Examples

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preparation example Construction

[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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Abstract

The invention provides a macromolecular moisture-proof blocking agent and a preparation method thereof, and relates to the technical field of blocking agents. The macromolecular moisture-proof blocking agent is prepared from the following components by weight: 10-30 parts of silicon rubber, 15-40 parts of polyphenylene sulfide, 5-15 parts of vinyl acetate, 3-12 parts of carbon fiber, 10-20 parts of modified epoxy acrylate resin and 20-40 parts of dimethyl silicone oil. The macromolecular moisture-proof blocking agent is good in leveling property, excellent in moisture resistance, sealing property and binding power and high in curing speed. The preparation method is simple and rapid, and is convenient for large-scale production.

Description

technical field [0001] The invention relates to the technical field of plugging agents, in particular to a polymer moisture-proof plugging agent and a preparation method thereof. Background technique [0002] Outdoor box-type equipment is easily affected by changes in ambient temperature, and the threat of condensation is more serious. Ring network cabinets, cable boxes, terminal boxes, wire control gauges, high and low voltage switchgear and other outdoor power grid box equipment are located in coastal or southern regions where the climate is very humid. It is easy for the moisture in the cable trench to enter the cabinet through the bottom plate that is not completely blocked and has structural gaps, forming a large amount of condensation on the roof of the cabinet, dripping the cable terminal, causing or causing an accident at the cable terminal, causing huge economic losses. [0003] At present, plugging agents are often used to effectively prevent small animals from en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L81/02C08L63/10C08L81/06C08L83/08C08K7/06
CPCC08L83/04C08L81/02C08L2201/02C08L63/10C08K7/06C08L81/06C08L83/08
Inventor 张俊杰罗薇王希成郑则进刘波
Owner 张俊杰
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