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Glass fiber reinforced polyethylene terephthalate composite material and method of producing the same

A technology of polyethylene terephthalate and composite materials, applied in the field of engineering plastics, can solve the problems of fast crystallization PET staying in the theoretical or laboratory research stage, and achieve strong adhesion, shrinkage and warpage The effect of small deformation and excellent mechanical properties

Inactive Publication Date: 2009-04-08
SHANGHAI KINGFA SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country's research on the development and utilization of PET as engineering plastics started relatively late, and the research and development are mainly carried out by some colleges and universities or research institutes. Therefore, most of the research on fast crystallization PET stays in the theoretical or laboratory research stage. Achilles' heel in the research of PET engineering plastics

Method used

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  • Glass fiber reinforced polyethylene terephthalate composite material and method of producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A glass fiber reinforced polyethylene terephthalate composite material, which is composed of the following raw materials in parts by weight: polyethylene terephthalate (brand name: bright slice; manufacturer: Zhangjiagang Chengxing Chemical Fiber Co., Ltd. company) 100 parts; 5 parts of composite elastomer compatibilizer and toughening agent; 1 part of composite nucleating agent; 3 parts of crystallization accelerator; 1 part of antioxidant; 2 parts of modified auxiliary agent; 0.2 part of silicone oil;

[0027] The composite elastomer compatibilizing and toughening agent is composed of 2.5 parts by weight of maleic anhydride grafted linear low density polyethylene and 2.5 parts by weight of ethylene-n-butyl acrylate-glycidyl methacrylate copolymer. Described composite nucleating agent is A+B type, and wherein, A is made up of 0.25 weight part of NA-11 (Ciba Specialty Chemical Co., Ltd.) and NaV101 (Germany Clariant Company) 0.25 weight part; B is superfine talcum powder...

Embodiment 2

[0030] A glass fiber reinforced polyethylene terephthalate composite material, which is composed of the following raw materials in parts by weight: polyethylene terephthalate (brand name: bright slice; manufacturer: Zhangjiagang Chengxing Chemical Fiber Co., Ltd. company) 100 parts; 20 parts of composite elastomer compatibilizing and toughening agent; 3 parts of composite nucleating agent; 8 parts of crystallization accelerator; 3 parts of transesterification inhibitor; 2 parts of antioxidant; parts; glass fiber 30 parts.

[0031] The composite elastomer compatibilizing and toughening agent is composed of 10 parts by weight of ethylene-vinyl acetate copolymer and 10 parts by weight of polybutylene terephthalate. Described composite nucleating agent is A+B type, and wherein, A is made of 0.5 weight portion of 295A (Honeywell Corporation of the U.S.), 0.5 weight portion of Surlyn8920 (DuPont Corporation of the U.S.) and PET-C (Beijing Beiqing Lianke Nano Plastic Co., Ltd.) 0.5 ...

Embodiment 3

[0035] A glass fiber reinforced polyethylene terephthalate composite material, which is composed of the following raw materials in parts by weight: polyethylene terephthalate (brand name: bright slice; manufacturer: Zhangjiagang Chengxing Chemical Fiber Co., Ltd. company) 100 parts; 10 parts of composite elastomer compatibilizing and toughening agent; 2 parts of composite nucleating agent; 5 parts of crystallization accelerator; 1.5 parts of transesterification inhibitor; 1.5 parts of antioxidant; parts; glass fiber 30 parts.

[0036] The composite elastomer compatibilizing and toughening agent is composed of 5 parts by weight of maleic anhydride grafted linear low density polyethylene and 5 parts by weight of ethylene-vinyl acetate copolymer. Described composite nucleating agent is A+B type, and wherein, A is made up of 0.5 weight part of NA-11 (Ciba Specialty Chemical Co., Ltd.), 0.5 weight part of 295A (Honeywell Corporation of the United States); B is organic bentonite . ...

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Abstract

The invention relates to a polyethylene glycol terephthalate composite material strengthened by fiberglass, which is characterized by being composed of the following materials with the following parts by weight: 100 portions of PET, 5 portions to 20 portions of composite elastomer compatibilizer and flexibilizer, 1 portion to 3 portions of composite nucleator, 3 portions to 8 portions of crystal accelerator, 0 portion to 3 portions of ester exchange inhibitor, 1 portion to 2 portions of antioxidant, 2 portions to 9 portions of modifying auxiliary agent, 0.2 portion to 0.5 portion of silicon oil and 30 portions of fiberglass. The preparation method of the composite material consists of the following steps: firstly, the PET, the composite elastomer compatibilizer and flexibilizer and the silicon oil are mixed in a high speed mixer, and then the nucleator, the crystal accelerator, the ester exchange inhibitor, the antioxidant and the modifying auxiliary agent are added and mixed up; and secondly, the mixture is melted with the fiberglass in a combined twin-screw extruder to extrude particles. The composite material has the advantages that the prepared PET / fiberglass composite material can be shaped at the temperature of 70 DEG C mold temperature and the shrinkage and warpage degree in anaphase are small.

Description

technical field [0001] The invention relates to a glass fiber reinforced polyethylene terephthalate composite material and a preparation method thereof, belonging to the technical field of engineering plastics. Background technique [0002] Polyethylene terephthalate (PET) is widely used in the fields of synthetic fibers, films and polyester bottles because of its excellent fatigue resistance, friction resistance, aging resistance and electrical insulation, but in Applications in the field of engineering plastics are still very limited. Due to the rigid structure of the PET molecular chain, the crystallization speed is slow, and its cold crystallization temperature generally reaches about 130°C. Higher mold temperature and longer molding cycle are required for injection molding. Crystallization is slow at the usual molding processing temperature, the toughness of the material is poor, the workpiece warpage is serious, and the dimensional stability is poor, thus limiting its...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K13/04C08K3/34C08K5/09B29B9/14B29C47/92C08L71/00C08L67/00B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C2948/92895
Inventor 王灿耀孙刚易庆锋苏妤吉继亮
Owner SHANGHAI KINGFA SCI & TECH
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