Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Environment-friendly flame retardant PBT/PC composite material and preparation method thereof

A composite material and environmentally friendly technology, applied in the field of environmentally friendly flame-retardant PBT/PC composite materials and their preparation, can solve problems such as poor interface bonding, achieve excellent mechanical properties and flame-retardant properties, high surface gloss, and dimensional stability Good results

Active Publication Date: 2010-12-15
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
View PDF6 Cites 36 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of poor interface bonding between PBT and PC, provide an environmentally friendly flame-retardant PBT / PC composite material with high-efficiency flame-retardant properties, excellent comprehensive mechanical properties, and meet the requirements of the ROHS directive, mainly used in electronics The electrical and electronic field represented by connectors

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Environment-friendly flame retardant PBT/PC composite material and preparation method thereof
  • Environment-friendly flame retardant PBT/PC composite material and preparation method thereof
  • Environment-friendly flame retardant PBT/PC composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 10

[0034] After dispersing and mixing PBT, PC, transesterification inhibitor, flame retardant, toughening compatibilizer and processing aid in a high-speed mixer in proportion, glass fiber is added to the side feed, melted and mixed by a twin-screw extruder , extrusion, cooling, pelletizing, drying and packaging. The length-to-diameter ratio of twin-screw extrusion is 40:1, the temperature of each stage of the screw is 240 to 270° C., and the rotational speed of the screw is 400 rpm / min. The composite materials prepared in each embodiment were injection molded into test specimens according to the standard size, the mechanical properties were tested according to the SIO international standard, and the flame retardancy was tested according to the UL94 standard.

[0035] Examples 1 to 3 verified different PBT / PC ratios, and the detailed ratios and test data results are shown in Table 1. Examples 4 to 6 verified the dosage of the impact modifier, and other components were changed ac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an environment-friendly flame retardant PBT / PC composite material which comprises the following components in percentage by weight: 30-60% of PBT, 10-50% of PC, 0.1-1% of ester exchange inhibitor, 5-25% of fire retardant, 0-5% of flame retardant assistant, 1-10% of toughening compatilizer, 20-50% of glass fiber and 1-5% of processing additive. The invention also provides a preparation method of the composite material. The environment-friendly flame retardant PBT / PC composite material prepared by the invention has excellent mechanical property and flame retardant property, does not endanger the environment and human health, meets the requirements of EU ROHS instructions, has good liquidity and de-molding performance, improves the processing degree of freedom and production forming efficiency, has superior heat-resistant property and a heat-deformation temperature of 210 DEG C, has small shrinkage and good dimensional stability, prevents buckling deformation, and has high surface gloss and good appearance.

Description

technical field [0001] The invention relates to an environment-friendly flame-retardant PBT / PC composite material for an electronic connector and a preparation method thereof, in particular to an environment-friendly flame-retardant PBT / PC composite material and a preparation method thereof. technical background [0002] Polybutylene terephthalate (PBT) is a thermoplastic engineering material with fast crystallization speed, which is easy to realize high-speed molding. It has excellent mechanics, electricity, chemical corrosion resistance, easy molding and low moisture absorption. A thermoplastic engineering plastic with excellent comprehensive performance is widely used in the manufacturing of automobiles and electronic appliances to manufacture parts with high mechanical strength requirements and heat-resistant, impact-resistant, and abrasion-resistant parts. It has become one of the five major projects An important member of plastics, glass fiber reinforced PBT can greatl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L67/02C08L69/00C08K13/04C08K7/14C08K3/32
Inventor 余雪江刘涛杨克斌高飞
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com