Quickly crystallized polyester engineering plastic and preparation method thereof

A technology of crystalline polyester and engineering plastics, applied in the field of fast crystallization polyester engineering plastics, can solve the problems of slow crystallization speed, slow molding and demoulding, and high injection molding temperature of PET engineering plastics

Inactive Publication Date: 2010-07-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The above methods cannot solve the problems of slow crystallization speed, slow molding and demoulding of PET engineering plastics, and high injection molding temperature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0119] 100 parts of polymerized modified fast crystallization polyethylene terephthalate dried to a water content below 100ppm, intrinsic viscosity 0.80dl / g (China Textile Science Research Institute K100), 6 parts of ethylene-methacrylic acid sodium ion Polymer (DuPont Sulyn8920), 30 parts of alkali-free long glass fiber (Beijing Tongzhou Xingwang glass fiber E200), 10 parts of decabromodiphenyl ether (U.S. Yabao 102E) and 3 parts of antimony trioxide (flash Star Antimony Industry Company), 8 parts of ethylene-butyl methacrylate-glycidyl acrylate (DuPont PTW) and 0.5 parts of 1010 were mixed evenly. The twin-screw extruder melts and extrudes at 280°C. Water-cooled strips and diced. That is, fast crystallization polyester engineering plastics.

Embodiment 2

[0121] 100 parts of polymerized modified fast-crystallization polyethylene terephthalate dried to a water content below 100ppm, intrinsic viscosity 0.80dl / g (China Academy of Textile Sciences K100), 6 parts of ethylene-ethyl acrylate-methanol Glycidyl acrylate (AX8900 from Atofina Company), 30 parts of alkali-free long glass fiber (Beijing Tongzhou Xingwang Glass Fiber E200), 0.5 part of sodium montanate (NAV101 Clariant Company), 15 parts of brominated ring Oxyethane (Israel Dead Sea Bromine Company 2100) and 3 parts of antimony trioxide (Shining Star Antimony Industry Company) and 0.5 part of 1010 were mixed evenly. The twin-screw extruder melts and extrudes at 260-280°C. Water-cooled strips and diced. That is, fast crystallization polyester engineering plastics.

Embodiment 3

[0123] 100 parts of polymerized modified fast crystallization polyethylene terephthalate dried to a water content below 100ppm, intrinsic viscosity 0.8dl / g (China Textile Science Research Institute K100), 2 parts of ethylene-methacrylic acid sodium ion Polymer (DuPont Sulyn8920) and 0.5 parts of talcum powder (Liaoning Haicheng Talc Company), 14 parts of brominated polystyrene (U.S. Albemarle 7010) and 4 parts of sodium antimonate (Shining Star Antimony Industry Company) , 8 parts of ethylene-butyl methacrylate-glycidyl acrylate (DuPont PTW) and 0.5 part of 1010 were mixed evenly. The twin-screw extruder melts and extrudes at 260-280°C. Water-cooled strips and diced. That is, fast crystallization polyester engineering plastics.

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Abstract

The invention relates to a quickly crystallized polyester engineering plastic and a preparation method thereof. The quickly crystallized polyester engineering plastic is prepared with the following components by way of extrusion in a double-screw extruder: 100 parts by weight of modified quickly crystallized polyester A, 0.05 to 5 parts by weight of nucleating agent B, 10 to 40 parts by weight of glass fibers C, 10 to 30 parts by weight of flame retardant D, 1 to 15 parts by weight of flexibilizer E and 0.01 to 3 parts by weight of antioxidant F. The engineering plastic has the advantages of high crystallization speed, high mechanical strength, quick injection moulding and low-temperature demoulding, the finished product cannot be deformed, and the engineering plastic prepared with the quickly crystallized polyester engineering plastic composition has the advantages of high crystallization speed, high mechanical strength, quick injection moulding and low-temperature demoulding.

Description

technical field [0001] The invention relates to a fast crystallization polyester engineering plastic made from modified fast crystallization polyester, crystallization nucleating agent, glass fiber, flame retardant and toughening agent. More specifically, it relates to the characteristics of polyester engineering plastics such as rapid crystallization, tensile strength, impact strength, bending strength, and temperature resistance; and rapid crystallization performance and rapid release characteristics at low temperatures during injection molding. Background technique [0002] Polyethylene terephthalate (PET) is currently widely used in the fields of synthetic fibers, films and engineering plastics. Its outstanding features are excellent heat resistance, electrical insulation, chemical resistance and non-toxic environmental protection; and it has low production cost and high cost performance. [0003] Especially in the textile industry, PET is an important synthetic fiber r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K13/04C08K7/14C08K5/06C08K3/22C08K5/1515C08K3/34C08K3/24C08L25/06
Inventor 金建杨喆
Owner CHINA PETROLEUM & CHEM CORP
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