Drippage-resisting agent and preparation method thereof as well as thermoplastic resin product containing drippage-resisting agent

A thermoplastic resin and anti-dripping agent technology, which is applied in the field of thermoplastic resin products, can solve the problems of thermoplastic resin product surface defects, low polytetrafluoroethylene content, low anti-dripping performance, etc., and achieve good anti-dripping performance and flow Excellent performance and high flame retardant performance

Active Publication Date: 2012-04-11
上海鲁聚聚合物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] CN1138053A discloses a method for radical emulsion polymerization of acrylonitrile-styrene in the presence of polytetrafluoroethylene emulsion, the resulting product still has the defect of easy adhesion, and the polytetrafluoroethylene content in the resulting product is low, not more than 50%
[0010] Therefore, the e

Method used

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  • Drippage-resisting agent and preparation method thereof as well as thermoplastic resin product containing drippage-resisting agent

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preparation example Construction

[0025] The preparation method of the above-mentioned MQ silicone resin is to first add a head sealant and a silicate monomer, a strong acid such as hydrochloric acid or sulfuric acid, deionized water, and a solvent such as toluene, xylene, methyl ethyl ketone or ethanol to the reactor. or a mixture of two or more. Then add the core emulsion solution while stirring, carry out hydrolysis and condensation, keep the hydrolysis state and stir the reaction for 1-10 hours, preferably 2-5 hours, so that the reaction is complete. Finally add toluene for extraction, the extraction process is 1 to 4 hours, preferably after 1 to 2 hours, pour the reaction solution into a separatory funnel for layering, divide the water layer, wash the oil layer to neutral, distill and dry to remove the toluene to obtain anti-dripping The agent is dried to make the water content less than 5%, preferably less than 1%, to obtain the finished anti-dripping agent.

[0026] In order to effectively control the ...

Embodiment 1

[0049] Add 7.4 grams of 1,3 divinyl-1,1,3,3,-tetramethyldisiloxane, 0.3 ml of concentrated hydrochloric acid, and 3 ml to a 250 ml three-necked flask equipped with a thermometer, a reflux device and a stirring device. The mixed solution of ionized water and 6ml ethanol was then started to stir, and then 50 grams of polytetrafluoroethylene concentrated dispersion (teflon 30J from DuPont, USA, solid content 60%) was added dropwise within 1 hour. Then quickly drop 10.4 grams of tetraethyl orthosilicate for hydrolysis and condensation. After hydrolysis for 1 hour, add 50ml of toluene for extraction. After 1 hour, pour the reaction solution into a separatory funnel for layering. After distilling and drying to remove toluene, 43.2 grams of white powdery solids are obtained as white microspheres, with an average particle diameter of 0.7mm, wherein the polytetrafluoroethylene content is 69% by weight, and the M / Q ratio of the silicone resin measured by the above method is 0.88.

Embodiment 2

[0051] The manufacturing process is the same as in Example 1, except that the silane monomer is replaced by 13.2 grams of tetraethyl orthosilicate. The reaction product was washed with water to obtain 45.2 grams of anti-dripping agent, wherein the polytetrafluoroethylene content was 66%. It is a white microsphere with an average particle diameter of 0.5mm, and the M / Q ratio of the silicone resin measured by the above-mentioned method is 0.76.

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Abstract

The invention provides a drippage-resisting agent of thermoplastic resin and preparation method thereof as well as a thermoplastic resin product containing the drippage-resisting agent. The drippage-resisting agent is composed of microparticles with an average particle size of 0.075-1 mu m, wherein each microparticle consists of a core part and a shell part, the core part contains a vinyl fluorinated polymer with fibrillogenesis property; the shell part is MQ silicon resin with the ratio of M to Q being 0.6-0.9; and the weight ratio of the core part to the shell part is (40:60)-(80:20). The drippage-resisting agent provided by the invention has goof dispersibility and good flowing property; and the thermoplastic resin product containing the drippage-resisting agent has good surface smoothness and high flame retardant property.

Description

technical field [0001] The present invention relates to an anti-dripping agent capable of endowing flammable thermoplastic resins with anti-dripping properties, a preparation method thereof, and thermoplastic resin products containing it, especially a polytetrafluoroethylene anti-dripping agent and an anti-dripping agent containing it Thermoplastic resin products. Background technique [0002] Thermoplastic resin materials are light, easy to manufacture, easy to dye, and convenient for mass production. They have been widely used in various environments such as homes, offices, factories, and public facilities. They are especially used as engineering plastics to manufacture electronics, electrical appliances, automobiles, communications, Tools, toys, office test equipment and other items. Thermoplastic materials are flammable, and are prone to softening, deformation or even dripping when heated. [0003] In order to improve the anti-dripping properties of thermoplastic resin...

Claims

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Application Information

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IPC IPC(8): C08L27/18C08L83/07C08G77/20C08L23/06C08L23/12C08L27/06C08L25/06C08L25/12C08L55/02C08L69/00C08L77/02C08L77/06C08L67/00C08L33/04
Inventor 智锋高攀
Owner 上海鲁聚聚合物技术有限公司
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