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Heat and humidity resistant ,enhanced flame-retardant poly-butylene terephthalate composite materials and preparation method thereof

A technology of polybutylene terephthalate and composite material, which is applied in the field of moist heat resistance reinforced flame retardant polybutylene terephthalate composition, and can solve the problems of reduced voltage resistance, precipitation of flame retardant and the like

Inactive Publication Date: 2006-08-09
横店集团得邦工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dispersant improves the contact area between the functional group of the multifunctional graft compound and the carboxyl group at the end of polybutylene terephthalate through the dispersion and synergistic effect of the multifunctional graft compound and the glass fiber. It enhances the dispersion uniformity and bonding strength of glass fiber and flame retardant in polybutylene terephthalate, and fundamentally solves the drop in withstand voltage performance of the material in a humid and hot environment, exposed fibers on the surface of the product, and the precipitation of flame retardants etc., so that the present invention can be applied to high-voltage device products of potentiometers, protectors and short circuits used in hot and humid environments

Method used

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  • Heat and humidity resistant ,enhanced flame-retardant poly-butylene terephthalate composite materials and preparation method thereof
  • Heat and humidity resistant ,enhanced flame-retardant poly-butylene terephthalate composite materials and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: Take polybutylene terephthalate (100 parts, weight ratio, the same below), 8 parts of multifunctional graft complex, 2 parts of glycerol monostearate and 0.5 of sodium benzenecarboxylate After being mixed by a high-speed mixer, it is sent to the twin-screw extrusion equipment by a precision metering device. At the same time, 18 parts of decabromodiphenylethane, 8 parts of antimony trioxide, and 65 parts of glass fiber are fed into the extruder from the side feeding port. Under the action of screw conveying and shearing, it is fully plasticized, melted, compounded, and then extruded, stretched, cooled, pelletized and dried. The mold temperature is room temperature. The product test method adopts International Organization for Standardization (ISO), International Electrotechnical Commission (IEC), and Underwriters Association Laboratory (UL) standards. For example, the tensile strength test method is ISO527, the static bending strength test method is ISO178, the si...

Embodiment 2

[0038] Example 2: 100 parts of polybutylene terephthalate, 9 parts of multifunctional grafted compound, 1.5 parts of ethylene bisstearamide and 0.8 parts of sodium benzene carboxylate were mixed by a high-speed mixer, and then mixed by precision The metering device is fed into the reciprocating single-screw extrusion equipment. At the same time, 20 parts of brominated epoxy, 6 parts of anhydrous zinc borate and 50 parts of glass fiber were fed into the extruder from the side feeding port. Under the action of screw conveying and shearing, it is fully plasticized, melted, compounded, and then extruded, stretched, cooled, pelletized and dried. The comprehensive performance parameter test method is the same as in Example 1, and the comprehensive performance parameters of the product are shown in Table 1.

Embodiment 3

[0039] Example 3: 100 parts of polybutylene terephthalate, 5 parts of multifunctional grafted compound, 1 part of ester wax and 0.2 part of sodium benzene carboxylate were mixed with a high-speed mixer, and then fed by a precision metering device Twin screw extrusion equipment. At the same time, 15 parts of brominated polystyrene, 5 parts of sodium antimonate, and 35 parts of glass fiber were fed into the extruder from the side feeding port. Under the action of screw conveying and shearing, it is fully plasticized, melted, compounded, and then extruded, stretched, cooled, pelletized and dried. The comprehensive performance parameter test method is the same as that in Example 1. Refer to Table 1 for the comprehensive performance parameters of the product.

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Abstract

The invention relates to a heat and humidity resistant ,enhanced flame-retardant poly-butylene terephthalate composite materials and preparation method thereof, wherein the composite material comprises polybutylene terephthalate, main combustion inhibitor, auxiliary combustion inhibitor, dispersing agent, core forming agent, polyfunctional group grafted compound and glass fiber.

Description

Technical field [0001] The present invention relates to a polybutylene terephthalate (PBT) composite material, in particular to a moisture-resistant enhanced flame-retardant polybutylene terephthalate composition containing organic and inorganic ingredients and its preparation law. Background technique [0002] Someone once applied for the disclosure of a flame-retardant polyethylene terephthalate resin composition (patent application number 96190457.7), which is composed of: (1) a type of compound as a catalyst produced by using ethylene terephthalate 100 parts of polyethylene terephthalate resin with glycol ester unit as the main component (weight ratio, the same below), (2) 1-60 parts of halogen flame retardant, (3) in the molecule 0.05-20 parts of at least one compound selected from the group consisting of epoxy compounds with at least 2 epoxy groups and carbodiimide compounds, (4) 0.1-20 parts of antimony compounds, and (5) reinforcement Filling agent 0-150 parts. It has cer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/03C08K5/59
Inventor 宋向前蒋红藤张春明
Owner 横店集团得邦工程塑料有限公司