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Drip-proof agent, preparation method thereof and thermoplastic resin products containing the same

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 transparency High, good dispersion effect

Active Publication Date: 2008-04-23
GUANGZHOU SHINE POLYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Therefore, the existing polytetrafluoroethylene anti-dripping agent still has the defects of low polytetrafluoroethylene content and poor dispersibility
The thermoplastic resin products added with the above-mentioned polytetrafluoroethylene anti-dripping agent have problems of surface defects, poor appearance and low anti-dripping properties

Method used

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  • Drip-proof agent, preparation method thereof and thermoplastic resin products containing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Add 25 grams of deionized water, 2 grams of NaCl, 0.02 grams of OP-10 (nonylphenol polyoxyethylene ether) in a 250ml three-neck flask with a thermometer, a reflux device and a stirring device, and adjust the pH value to 5 with dilute hydrochloric acid. Start stirring and add 15 grams of mixed monomers of acrylonitrile, styrene and maleic acid dissolved in 0.75 gram of cumene hydroperoxide (the mass ratio of acrylonitrile, styrene and maleic acid is 6.5 / 3 / 0.5). Gently heat, and control temperature 40~50 ℃, yet dropwise add 50 grams of polytetrafluoroethylene concentrated dispersions (U.S. DuPont company teflon 30J) in 1 hour.After dropping, slowly pass into nitrogen to drive away oxygen, with 4 Raise the temperature to 50°C at a speed of ℃ / min, keep it warm for 2 hours, then raise the temperature to 70°C and keep it for 4 hours, and finally raise the temperature to 90°C and keep it for 3 hours, after the particles settle out, remove the nitrogen gas and inject water vapor...

Embodiment 2

[0056] The manufacturing process is the same as in Example 1, except that the shell monomer mixture is replaced with 12 grams of methyl methacrylate and 1 gram of methacrylic acid, 0.15 grams of azobisisobutylcyanide is used as the initiator, and 3.3 grams of sodium chloride is used as the electrolyte. The reaction product was washed with water to obtain 41.6 grams of anti-dripping agent, wherein the polytetrafluoroethylene content was 70%. It is a white microsphere, the primary average particle size is 0.30um, and the secondary average particle size is 0.24mm.

Embodiment 3

[0058] The manufacturing process is the same as in Example 1, except that the shell monomer mixture is replaced by 15 grams of styrene and 1 gram of acrylic acid. The initiator uses 0.15 grams of benzoyl peroxide. The electrolyte is 2.8 grams of calcium chloride. The reaction product was washed with water to obtain 45.3 grams of anti-dripping agent, wherein the polytetrafluoroethylene content was 65%. It is a white microsphere, the primary average particle size is 0.37um, and the secondary average particle size is 0.36mm.

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Abstract

The present invention provides one kind of antidrip agent for thermoplastic resin, its preparation process and thermoplastic resin composition containing the antidrip agent. The antidrip agent is particle of average size 0.075-1 micron and comprising one core part and one shell part in the weight ratio of 30 / 70-80 / 20. The core part contains fibrillation tetrafluoroethylene-base polymer, and the shell part is copolymer of vinyl monomer and alpha-, beta-olefinic bond unsaturated carboxylic acid. The antidrip agent has high dispersivity, and the thermoplastic resin composition containing the antidrip agent has no surface defect, good appearance and high transparency.

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): C08J3/12C08L27/18C08L23/06C08L23/12C08L27/06C08L25/06C08L25/12C08L53/02C08L69/00C08L77/00C08L33/00
Inventor 石建伟李向涛周亮
Owner GUANGZHOU SHINE POLYMER TECH
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