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ABS (Acrylonitrile Butadiene StyreneAcrylonitrile Butadiene Styrene) reinforced modified PBT (Polybutylece Terephthalate) composition

A composition and modification technology, which is applied in the field of polymer materials, can solve problems such as warping of parts and affecting appearance

Inactive Publication Date: 2017-09-08
宁波市特尔佳塑料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of glass fiber reinforced PBT is that the parts are prone to warping and affect its appearance

Method used

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  • ABS (Acrylonitrile Butadiene StyreneAcrylonitrile Butadiene Styrene) reinforced modified PBT (Polybutylece Terephthalate) composition
  • ABS (Acrylonitrile Butadiene StyreneAcrylonitrile Butadiene Styrene) reinforced modified PBT (Polybutylece Terephthalate) composition

Examples

Experimental program
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manufacture example

[0031] Prepared as follows:

[0032] The ABS resin was produced using a tandem polymerization apparatus in which 3 complete mixing type reactors were connected in series. The first stage consists of the first reactor and the second stage consists of the second reactor and the third reactor.

[0033] Use a plunger pump to contain 65.7 parts by weight of styrene, 21.4 parts by weight of acrylonitrile, 10.3 parts by weight of rubbery polymer, 0.12 parts by weight of tert-dodecyl mercaptan and 0.028 parts by weight of 1,1-bis(tert-butyl peroxy) - A first charge of 3,3,5-trimethylcyclohexane is continuously fed at a rate of 7.0 kg / hour into the first reactor where the monomer is polymerized. In this case, the polymerization temperature was adjusted so that the solid content at the outlet of the first reactor (i.e., the amount of the rubbery polymer and the styrene / acrylonitrile copolymer in the polymerization solution) was 22.1% by weight relative to the weight of the polymerizati...

Embodiment

[0039] ABS reinforced modified PBT particles are prepared by the following methods:

[0040] a: Weigh PBT and ABS according to the weight ratio, mix them evenly, bake the PBT at 150°C for 2 hours before mixing, and control the moisture content to less than 0.05%;

[0041] b: Weigh the coupling agent and glass fiber according to the weight ratio, and mix them evenly;

[0042] c: Take the triblock copolymer, lubricant and antioxidant of poly(styrene) / poly(butadiene) / poly(methyl methacrylate) by weight ratio, mix them uniformly, and then mix them with Add the mixed materials in step a into the high-speed mixer and continue mixing until uniform. The speed of the high-speed mixer is 800 rpm, and the mixing time is 2-3 minutes;

[0043] d: Put the raw materials mixed in step c into the hopper of the twin-screw extruder, add the glass fiber modified by the silane coupling agent surface at the special glass fiber port of the twin-screw extruder, and melt and extrude it to produce Gr...

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Abstract

The invention discloses an ABS (Acrylonitrile Butadiene StyreneAcrylonitrile Butadiene Styrene) reinforced modified PBT (Polybutylece Terephthalate) composition, which is prepared from the following components in parts by weight: 40 to 70 parts of PBT, 10 to 20 parts of ABS, 10 to 30 parts of glass fiber, 1 to 10 parts of triblock copolymer of poly(styrene) / poly(butadiene) / poly (methyl methacrylate), 0.1 to 1 part of antioxidant, 0.5 to 2 parts of coupling agent, and 1 to 2 parts of lubricating agent. A product prepared by utilizing the composition has high gloss, improved shock strength, high tensile strength and the like. The invention also discloses a preparation method of the composition.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an ABS reinforced modified PBT composition and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) is a crystalline material polymerized by polycondensation of terephthalic acid and butanediol. As a widely used engineering plastic, PBT has comprehensive and stable mechanical properties, good hydrolysis resistance, low moisture absorption, good resistance to chemicals, solvents, and weather resistance; fast crystallization speed, good fluidity, excellent formability, and high dielectric strength. , good electrical performance; low friction coefficient, wear resistance; good bending creep; easy to make glass fiber reinforced and flame retardant products, easy post-processing. But the crystallization stability of PBT resin is relatively poor, causes product size to be unstable, and it is more sensitive to notch, makes t...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L55/02C08L53/02C08K13/06C08K9/06C08K7/14C08K5/098C08K5/20C08F279/04B29B9/06B29C47/92B29C48/92
CPCC08L67/02B29B9/06B29C48/92B29C2948/92561B29C2948/9258B29C2948/92704C08F279/04C08L2205/03C08L2205/08C08L55/02C08L53/02C08K13/06C08K9/06C08K7/14C08K5/098C08K5/20
Inventor 毛秋娣
Owner 宁波市特尔佳塑料科技有限公司
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