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Polyethylene terephthalate composite material and method for preparing same

A technology of polyethylene terephthalate and phthalate, which is applied in the field of polyethylene terephthalate composite materials and its preparation, and can solve problems such as poor rigidity and hardness

Inactive Publication Date: 2011-05-04
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Amorphous PET has better ductility, but less rigidity and hardness

Method used

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  • Polyethylene terephthalate composite material and method for preparing same
  • Polyethylene terephthalate composite material and method for preparing same
  • Polyethylene terephthalate composite material and method for preparing same

Examples

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preparation example Construction

[0029] The above compound nucleating agent is preferably a compound nucleating agent prepared by compounding activated magnesium silicate, nano-calcium carbonate, and carboxylate. This compound nucleating agent preparation method preferably comprises the steps:

[0030] The activated magnesium silicate and nano-calcium carbonate are heat-treated at 70-90°C for 1-3 hours under the action of a coupling agent to obtain an inorganic mixture; the inorganic mixture is mixed with carboxylates and heated at 60-90 Heat treatment at 80°C for 0.5-2 hours to obtain the compound nucleating agent.

[0031] Specifically, the mass ratio of the magnesium silicate in the above-mentioned activated magnesium silicate solution to the nano-calcium carbonate in the nano-calcium carbonate solution is preferably 1~2: 3~4; Under the action of the coupling agent, it is further preferably heat-treated at 85° C. for 2 hours to obtain an inorganic mixture. The mass ratio of the inorganic component to the...

Embodiment 1

[0053] The formula component of polyethylene terephthalate composite material parts by weight is as follows:

[0054] 100 parts of polyethylene terephthalate, 25 parts of toughening agent, 6 parts of compatibilizer, 0.5 part of antioxidant, 2 parts of compound nucleating agent. Among them, the relative density of polyethylene terephthalate is 1.38g / cm 3 , the melting point is 260°C, and its dynamic viscosity in the molten state is 1.1 Pa·s; the toughening agent is a copolymerized methyl methacrylate-butadiene-styrene core-shell toughening agent; the compatibilizer is ethyl Olene-octene copolymer (POE) grafted methacrylate-glycidyl acrylate compatibilization modifier; antioxidant is triethylene glycol bis-3-(3-tert-butyl-4-hydroxy-5- Methylphenyl) acrylonitrile; the composite nucleating agent is a composite nucleating agent prepared by activating magnesium silicate, nano-calcium carbonate, carboxylate, and its preparation method is: the mass ratio is 1:3 The activated magnesi...

Embodiment 2

[0060] The formula component of polyethylene terephthalate composite material parts by weight is as follows:

[0061] 100 parts of polyethylene terephthalate, 30 parts of toughening agent, 7 parts of compatibilizer, 0.8 part of antioxidant, 3 parts of compound nucleating agent. Among them, the relative density of polyethylene terephthalate is 1.35g / cm 3 , the melting point is 250°C, and its dynamic viscosity in the molten state is 0.65 Pa·s; the toughening agent is a copolymerized methyl methacrylate-butadiene-styrene core-shell toughening agent; the compatibilizer is ethyl Olene-octene copolymer (POE) grafted methacrylate-glycidyl acrylate compatibilization modifier; antioxidant is tris(2,4-di-tert-butylphenol) phosphite; complex nucleation The agent is a composite nucleating agent prepared by compounding activated magnesium silicate, nano-calcium carbonate, and carboxylate. Please refer to Example 1 for its preparation method.

[0062] The preparation method of polyethylen...

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Abstract

The invention discloses a polyethylene terephthalate composite material and a method for preparing the same. The polyethylene terephthalate composite material is prepared from the following components in parts by weight: 100 parts of polyethylene terephthalate, 25-35 parts of plasticizer, 6-8 parts of compatibilizer and 2-4 parts of compound nucleating agent. The components in proper content range interact mutually during extrusion, thus the polyethylene terephthalate composite material has advantages of excellent impact strength, heat distortion temperature, gloss, ultrasonic welding performance, dimensional stability and chemical resistance. The method for preparing the polyethylene terephthalate composite preparation adopts the simple one-step mixing reaction-extrusion-granulation process, is convenient to operate, has high benefit and low cost and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a polyethylene terephthalate composite material and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (also called "PET") is a polyester of terephthalic acid and ethylene glycol, which can be obtained by polycondensation of dimethyl terephthalate and ethylene glycol, and terephthalic It can be obtained by polycondensation of formic acid and ethylene glycol or ethylene oxide. PET exists as amorphous (transparent) and semi-crystalline (opaque and white) thermoplastics. In general, it has beneficial chemical resistance to mineral oils, solvents and acids, but no chemical resistance to bases. Semi-crystalline PET has good strength, ductility, rigidity and hardness. Amorphous PET has better ductility, but less rigidity and hardness. Therefore, it is necessary to modify polyethylene terephthalate to expand its application f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L51/04C08L51/06C08K13/06C08K9/06C08K3/34C08K3/26C08K5/098B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40
Inventor 徐东徐永孙航
Owner SHENZHEN KEJU NEW MATERIAL
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