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Coating-free glass fiber reinforced PBT/PET composition having metal effect and preparation method thereof

A metal effect and composition technology, which is applied in the field of non-spraying metal effect glass fiber reinforced PBT/PET composition and its preparation field, can solve the problems of long molding cycle, brittle bakelite, inconvenient production and processing, etc., and can improve the surface metal effect. , the effect of excellent mechanical properties and heat resistance

Inactive Publication Date: 2018-12-28
TIANJIN KINGFA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, bakelite is brittle, the molding cycle is long and the structure of the product used is relatively simple, and surface spraying must be carried out, which brings great inconvenience to production and processing.

Method used

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  • Coating-free glass fiber reinforced PBT/PET composition having metal effect and preparation method thereof
  • Coating-free glass fiber reinforced PBT/PET composition having metal effect and preparation method thereof
  • Coating-free glass fiber reinforced PBT/PET composition having metal effect and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A spray-free metal effect glass fiber reinforced PBT / PET composition, prepared from the following components in parts by weight: 62 parts of PBT resin; 10 parts of PET resin: 25 parts of glass fiber; 1 part of pearlescent pigment; 2 parts of auxiliary agent parts; the composition also includes tetrahydrofuran, based on the total weight of the composition, the content of tetrahydrofuran is 350ppm.

[0033] The preparation method of the above-mentioned spray-free metal effect glass fiber reinforced PBT / PET composition comprises the following steps:

[0034] Mix tetrahydrofuran and methyl siloxane into a tetrahydrofuran methyl siloxane solution; mix tetrahydrofuran methyl siloxane solution, PBT resin, PET resin and additives in a high-speed mixer for 1-2 minutes to obtain a premix , the premixed material is melt-extruded through a twin-screw extruder at 220°C-240°C, side-fed with glass fibers, cooled, and granulated to obtain a glass fiber-reinforced PBT / PET composition; t...

Embodiment 2

[0036] A spray-free metal effect glass fiber reinforced PBT / PET composition, prepared from the following components in parts by weight: 52 parts of PBT resin; 20 parts of PET resin: 25 parts of glass fiber; 1 part of pearlescent pigment; 2 parts of auxiliary agent parts; the composition also includes tetrahydrofuran, based on the total weight of the composition, the content of tetrahydrofuran is 200ppm.

[0037] The preparation method of the above-mentioned spray-free metal effect glass fiber reinforced PBT / PET composition is the same as that of Example 1.

Embodiment 3

[0039] A spray-free metal effect glass fiber reinforced PBT / PET composition, prepared from the following components in parts by weight: 52 parts of PBT resin; 15 parts of PET resin: 30 parts of glass fiber; 1 part of pearlescent pigment; 2 parts of auxiliary agent parts; the composition also includes tetrahydrofuran, based on the total weight of the composition, the content of tetrahydrofuran is 150ppm.

[0040] The preparation method of the above-mentioned spray-free metal effect glass fiber reinforced PBT / PET composition is the same as that of Example 1.

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Abstract

The invention provides a coating-free glass fiber reinforced PBT / PET composition having a metal effect and a preparation method thereof. The coating-free glass fiber reinforced PBT / PET composition ischaracterized by being prepared from, by weight, 35-70 parts of PBT resin, 10-20 parts of PET resin, 25-35 parts of glass fiber, 0.5-2 parts of pearlescent pigment and also comprises tetrahydrofuran,wherein the content of the tetrahydrofuran is greater than or equal to 350 ppm based on the total weight of the composition. When the content of the tetrahydrofuran added into the coating-free glass fiber reinforced PBT / PET composition is greater than or equal to 350 ppm based on the total weight of the PBT / PET composition and is greater than or equal to 15 ppm, the surface metal effect of fiber reinforced PBT / PET can be obviously improved, meanwhile the composition has excellent mechanical property and heat resistance, and an injection molded product is free of rill marks and floating fiber.

Description

technical field [0001] The invention belongs to the technical field of modification of engineering plastics, and in particular relates to a spray-free metal effect glass fiber reinforced PBT / PET composition and a preparation method thereof. Background technique [0002] Bakelite, also known as phenolic resin, is a thermosetting plastic, which has high mechanical strength, good insulation, heat resistance, and corrosion resistance. It is widely used in the manufacture of electrical materials, such as switches, telephone casings, and oven casings. Wait. However, bakelite is brittle, the molding cycle is long and the structure of the product used is relatively simple, and surface spraying must be carried out, which brings great inconvenience to production and processing. Polybutylene terephthalate (PBT) / polyethylene terephthalate (PET) alloy materials have good mechanical properties, electrical properties, heat resistance and chemical resistance, etc., and are widely used in a...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K13/04C08K13/06C08K9/10C08K7/14C08K7/00C08K5/134C08K5/1535C08K3/24C08K3/22
CPCC08K2201/003C08L67/02C08L2201/08C08L2205/025C08L2205/03C08K13/04C08K7/14C08K7/00C08K5/1345C08K5/1535C08K3/24C08K3/2279C08K13/06C08K9/10
Inventor 陈锋禹权王中林曹邵强朱文付学俊陈锐
Owner TIANJIN KINGFA NEW MATERIAL
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