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Polyethylene glycolterephthalate composition and its preparing method

A technology of polyethylene terephthalate and its composition, which is applied in the field of polyethylene terephthalate composition and its preparation, can solve the problem of loss of rigidity and heat resistance temperature, and lack of comprehensive performance of PET and other problems, to achieve the effect of reducing difficulty, good toughness and improving molding cycle

Active Publication Date: 2005-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this modification method often makes PET greatly lose rigidity and heat resistance temperature while improving toughness, so that PET cannot obtain good comprehensive properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0028] Polyethylene terephthalate PET (produced by Yanshan Petrochemical) and fully vulcanized benzopyridine powder rubber (in the styrene-butadiene emulsion [brand 55555] of Changzhihai Latex Co., Ltd. After 3% of the weight of the dry glue is added to the cross-linking aid trimethylolpropane triacrylate, it is irradiated and vulcanized, and the irradiation dose is 2.5Mrad, and it is obtained after spray drying. The inlet temperature of the spray dryer is 140°C-160°C ℃, the outlet temperature is 40°C-60°C, the dried powder is collected in a cyclone separator, the average particle size of the fully vulcanized pyridine powder rubber is 100nm, and the gel content is 87%), flame retardant (Sb 2 o 3 , decabromodiphenyl ether, commercially available), long glass fiber GF (Beijing Tongxian Glass Fiber Factory, alkali-free glass fiber) and calcium stearate (CaSt 2 , Beijing Changyang Farm Chemical Factory), phosphate nucleating agent (9930T, East China University of Science and Tech...

Embodiment 5～8

[0030] PET (same as embodiment 1) and fully vulcanized phenylpyrroleene powder rubber (same as embodiment 1), thermoplastic polyester elastomer (copolymer of terephthalic acid, butylene glycol and butadiene, produced by Dupont, trade mark 5526), ​​glass fiber (with embodiment 1), calcium stearate (with embodiment 1), flame retardant (Sb 2 o 3 , decabromodiphenyl ether, commercially available) and phosphate nucleating agent (same as Example 1), put into a low-speed mixer and stir for 3 to 5 minutes, so that each component is fully mixed and uniform. Wherein with polyethylene terephthalate as 100 parts by weight, Sb 2 o 3 6 parts of decabromodiphenyl ether, 0.8 parts of calcium stearate, and 0.5 parts of nucleating agent. Then, the above-mentioned mixed materials are melt-blended, extruded and granulated at a speed of 200-350 r.p.m in a twin-screw (ZSK 25, Germany WP Company) at a temperature of 230-250°C. During the extrusion process, the long glass fiber is blended with th...

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PUM

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Abstract

The invention relates to a kind of polyethylene glycol terephthalate combination and its manufacturing method, which involves in the field of polyester resin crossblending and modifying. The combination contains the constituents as follows: polyethylene glycol terephthalate, styrene-butadiene pyrrole powder rubber containing cross-linking structure with average grain size of 30-200nm, and so on; among them, the part by weight of polyethylene glycol terephthalate is 100, and the part by weight of styrene-butadiene pyrrole powder rubber is 1-20. Melting and crossblending the constituents mentioned above can get polyethylene glycol terephthalate combination. The combination has fine tenacity and excellent processing ability, and meanwhile, it can keep well heat resistance and rigidity.

Description

technical field [0001] The present invention relates to a kind of polyester composition, more specifically, relates to a kind of polyethylene terephthalate composition modified by powder rubber and its preparation method. Background technique [0002] Thermoplastic polyester is one of the five major engineering plastics in the world today. It has a series of excellent properties such as light density, high strength, good electrical insulation and heat insulation, so it is widely used in the national economy, national defense industry and high-tech industries. It is an indispensable new material. Thermoplastic polyester mainly includes polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN) and polyethylene terephthalate (PEN). Cyclohexene dimethylene terephthalate (PCT), etc., are products of polycondensation of dibasic acids and dibasic alcohols. [0003] PET is a kind of thermoplastic polyester with very large output and consump...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/03
Inventor 尹华张薇张师军邵静波吕明福段淑清李魁吕芸王小兰张丽英武志军张浩
Owner CHINA PETROLEUM & CHEM CORP
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