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Preparation of special flame-proof heat-resistant material for ABS

A special material and heat-resistant technology, which is applied in the field of preparation of flame-retardant and heat-resistant acrylonitrile-butadiene-styrene copolymer resin special materials, can solve the problems of low thermal stability of flame-retardant ABS, difficulty in processing and dyeing, and easy material Decompose discoloration and other problems, achieve the effect of good flame retardancy, good anti-dripping performance, and simple and easy preparation process

Inactive Publication Date: 2008-10-01
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flame-retardant ABS developed by CPE and PVC has low thermal stability. If it is molded and processed at 230°C, the material is easy to decompose and change color, which brings difficulty to processing and dyeing and also causes waste of cost.
[0004] In the application field of flame retardant materials with high heat distortion temperature, resins such as polycarbonate (abbreviation: PC) and ABS are generally used as the main raw materials, and ABS or polyolefin grafts (mainly grafted maleic anhydride, etc.) Compatible agent, decabromodiphenyl ether and antimony trioxide as flame retardant system to prepare heat-resistant and flame-retardant PC / ABS plastic alloy, which is characterized by high heat-resistant temperature, but the cost is much higher than ordinary flame-retardant ABS

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0014] Raw material formula (parts by weight):

[0015] AS 40 servings

[0016] ABS graft powder (60% rubber content) 32.5 parts

[0017] Brominated epoxy resin 15 parts

[0018] 6 parts antimony trioxide

[0019] Teflon 0.3 parts

[0020] 5 servings of SMI

[0021] N,N-ethylenebisstearamide 1.0 part

[0022] Magnesium stearate 0.1 part

[0023] 0.1 part of distearyl pentaerythritol diphosphite

[0024] preparation:

[0025] First, mix each raw material component at a high speed in a high-speed mixer for 5 to 10 minutes, then add a co-rotating twin-screw extruder, blend according to the following process conditions, and then cool with cooling water and granulate to become Φ3×3mm cylindrical particle products.

[0026] Process conditions:

[0027] The temperature settings of conveying section, plasticizing section, metering section and die head are respectively 190~210℃, 215~220℃, 225~230℃, 235℃, screw speed: 220 rpm, vacuum degree -0.06±0.01MPa .

[0028] The main ...

example 2

[0036] Formula (parts by weight):

[0037] AS 25 servings

[0038] 22 parts of ABS graft powder

[0039] Brominated epoxy resin 20 parts

[0040] 8 parts antimony trioxide

[0041] 1.5 parts of Teflon

[0042] 20 servings of SMI

[0043] N,N-ethylenebisstearamide 3.0 parts

[0044] Magnesium stearate 0.3 part

[0045] 0.2 part of distearyl pentaerythritol diphosphite

[0046] preparation:

[0047] First, mix each raw material component at a high speed in a high-speed mixer for 5 to 10 minutes, then add a co-rotating twin-screw extruder, blend according to the following process conditions, and then cool with cooling water and granulate to become Φ3×3mm cylindrical particle products.

[0048] Process conditions:

[0049] The temperature settings of conveying section, plasticizing section, metering section and die head are respectively 190~210℃, 215~220℃, 225~230℃, 235℃, screw speed: 200 rpm, vacuum degree -0.06±0.01MPa .

[0050] The main properties of the prepared s...

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Abstract

The invention relates to a preparation method of the special material of flame retarding heat-proof ABS resin. The weight portions of all components of the special material contain are: 25 to 40 portions of styrene-acrylonitrile copolymeric resin, 5 to 20 portions of styrene-N-phenylmaleimide-acrylonitrile copolymer, 22 to 32.5 portions of ABS graft gelatine powder, 15 to 20 portions of brominated epoxy, 6 to 8 portions of antimony trioxide, 0.1 to 0.2 portion of di-stearyl pentaerythitoldiphosphite, 1.0 to 3.0 portions of N, N-Ethylene Bis-Stearamide, 0.1 to 0.3 portions of magnesium stearate, and 0.3 to 1.5 portions of polytetrafluoroethylene; the above components are added into a high speed mixer for high-speed mixing at room temperature, added into a concurrent double screw extruder for extrusion, and extruded and pelletized under the temperature between 190 to 230 DEG C, and cooled, finally the special material of flame retarding heat-proof ABS resin is prepared.

Description

technical field [0001] The invention relates to a preparation method of a special material for flame-retardant and heat-resistant acrylonitrile-butadiene-styrene copolymer resin (abbreviated as ABS resin), which can be widely used in household appliances, electronic telecommunications, auto parts and the like. Background technique [0002] At present, ordinary flame retardant ABS products on the market have poor heat resistance. For example, ordinary flame retardant ABS generally uses tetrabromobisphenol-A as a flame retardant. The heat distortion temperature is generally between 75 and 82 °C, and the product cannot be heated at 85 to 90 °C. ℃ used in the environment. The flame retardant ABS produced by using decabromodiphenyl ether or tetrabromobisphenol-A as flame retardant, tribasic lead sulfate and dibasic lead phosphite as stabilizer has poor heat resistance, and its heavy metal content is similar to that of decabromine. The content of biphenyls is seriously exceeding ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08K5/524B29C47/40B29B9/12C08L51/00C08L63/00C08L27/18C08K5/09C08K5/20
Inventor 索延辉赵新刚宋振彪吴丽明闫柏郁王贤慧刘聪
Owner PETROCHINA CO LTD
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