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Nano-modified PET engineering plastic and preparation method thereof

A technology of engineering plastics and nano-modification, applied in the field of plastic raw materials, can solve the problems of unstable viscosity, low glass transition temperature, imperfection, etc., to meet the requirements and environment of use, improve fire resistance, and improve anti-aging. Effect

Inactive Publication Date: 2015-04-29
广东壹豪新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, for the existing PET engineering plastics, it still has poor flame retardancy, poor toughness, and low impact strength. It is easy to cross-link with oxygen in the air during the melting process, making the viscosity unstable and without The glass transition temperature of the fixed phase is low; the existing crystallization nucleating agents make it imperfect in the crystallization process, some are nucleated by breaking chains, and some are added with high-mesh inorganic substances (granular , beaded or lamellar structure) to make it crystallize, so that the existing engineering materials have some defects such as mucous membrane, brittle cracks, and insufficient temperature resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment one, a kind of nano-modified PET engineering plastics, comprises the material that following weight ratio is arranged, specifically:

[0040] PET polyester 50%

[0041] Fiberglass 30%

[0042] Lubricant 0.4%

[0043] Antioxidant 0.6%

[0044] Toughener 2.5%

[0045] Flame retardant 13%

[0046] Synergistic flame retardant 2.5%

[0047] Nano nucleating agent 1%;

[0048] Among them, the lubricant is pentaerythritol stearate, the antioxidant is tetrakis [methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and phosphite tris(2 , 4-di-tert-butylphenyl) ester compound, tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester in antioxidant The weight ratio of tris(2,4-di-tert-butylphenyl) to phosphite is 1:1, that is, tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxy Phenyl) propionate] pentaerythritol ester and tris (2,4-di-tert-butylphenyl) phosphite account for 0.3% by weight of the total material; th...

Embodiment 2

[0056] Embodiment two, a kind of nano-modified PET engineering plastics, comprises the material that following weight ratio is arranged, specifically:

[0057] PET polyester 60%

[0058] Fiberglass 20%

[0059] Lubricant 0.4%

[0060] Antioxidant 0.6%

[0061] Toughener 2.5%

[0062] Flame retardant 13%

[0063] Synergistic flame retardant 2.5%

[0064] Nano nucleating agent 1%;

[0065] Among them, the lubricant is pentaerythritol stearate, the antioxidant is tetrakis [methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and phosphite tris(2 , 4-di-tert-butylphenyl) ester compound, tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester in antioxidant The weight ratio of tris(2,4-di-tert-butylphenyl) to phosphite is 1:1, that is, tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxy Phenyl) propionate] pentaerythritol ester and tris (2,4-di-tert-butylphenyl) phosphite account for 0.3% by weight of the total material; ...

Embodiment 3

[0073] Embodiment three, a kind of nano-modified PET engineering plastics, comprise the material that has following weight ratio, specifically:

[0074] PET polyester 40%

[0075] Fiberglass 40%

[0076] Lubricant 0.4%

[0077] Antioxidant 0.6%

[0078] Toughener 2.5%

[0079] Flame retardant 13%

[0080] Synergistic flame retardant 2.5%

[0081] Nano nucleating agent 1%;

[0082] Among them, the lubricant is pentaerythritol stearate, the antioxidant is tetrakis [methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and phosphite tris(2 , 4-di-tert-butylphenyl) ester compound, tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester in antioxidant The weight ratio of tris(2,4-di-tert-butylphenyl) to phosphite is 1:1, that is, tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxy Phenyl) propionate] pentaerythritol ester and tris (2,4-di-tert-butylphenyl) phosphite account for 0.3% by weight of the total material; the tough...

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Abstract

The invention discloses a nano-modified PET engineering plastic and a preparation method thereof. The nano-modified PET engineering plastic comprises 40%-60% of polyester (PET), 20%-40% of glass fibers, 0.4% of lubricant, 0.6% of antioxidant, 2.5% of flexibilizer, 13% of fire retardant, 2.5% of synergistic-effect fire retardant, and 1% of nano-nucleating agent; according to the proportions of the materials, the nano-modified PET engineering plastic has the advantages of good tenacity, good mechanical properties and good fire resistance, is greatly improved in the aspects of tenacity, wear resistance, high temperature resistance and ageing resistance, and is capable of well satisfying the use requirements and the use environments. In addition, the preparation method comprises the step of weighing materials, the step of mixing and stirring and the step of extruding and granulating by use of a twin-screw extruder; and due to the design of the process steps, the preparation method of the nano-modified PET engineering plastic is simple and low in cost.

Description

technical field [0001] The invention relates to the technical field of plastic raw materials, in particular to a nano-modified PET engineering plastic and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET for short), aliased in Chinese as glossy polyester chips, commonly known as polyester resin, is a high polymer, and together with PBT is collectively referred to as thermoplastic polyester or saturated polyester. Ethylene glycol phthalate is dehydrated and condensed. It is a milky white or light yellow, highly crystalline polymer with a smooth and shiny surface. [0003] PET has excellent physical and mechanical properties in a wide temperature range. The long-term use temperature can reach 120 ° C. It has excellent electrical insulation. Even at high temperature and high frequency, its electrical properties are still good, creep resistance, and fatigue resistance. , good friction resistance and dimensional stability. To make it ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K13/06C08K7/14B29C47/92B29C48/92
Inventor 郑豪胡正宏王强
Owner 广东壹豪新材料科技股份有限公司
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