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

High tenacity halogen-free flame-retardant glass fiber reinforced polycarbonate composition

A polycarbonate and composition technology, applied in the field of polymer composite materials, can solve the problems of increasing the sensitivity of the material to notched impact, difficulty in meeting the requirements of flame retardant properties, failure of key electronic and electrical components, etc., and improving mechanical properties. , Improve dimensional stability, maintain the effect of rigidity

Inactive Publication Date: 2009-07-01
HEFEI GENIUS NEW MATERIALS
View PDF0 Cites 33 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, although the flame retardancy of PC is better than that of ordinary thermoplastic polymers, it is still difficult to meet the requirements of flame retardancy in certain application fields. Therefore, it is necessary to modify the flame retardancy of PC glass fiber reinforced materials.
Generally, the purpose of flame retardant modification can be achieved by adding flame retardants to polymers. At present, PC flame retardants include tetrabromobisphenol A, decabromodiphenyl ether, decabromodiphenylethane, etc. European countries and the United States There are disputes on the toxicity and environmental issues of halogenated flame retardants such as polybrominated diphenyl ethers, and the corrosive gases generated during the cracking of halogenated flame retardants can easily lead to the failure of key electronic and electrical components. Therefore, PC materials are halogen-free Combustion is the general trend
On the other hand, the glass fiber reinforced flame retardant PC produced by the existing technology greatly reduces the impact strength of the PC material and increases the sensitivity of the material to notch impact, thus limiting the use of glass fiber reinforced flame retardant PC materials in some requirements. Applications in the fields of rigidity, dimensional stability, and impact-resistant parts

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
  • High tenacity halogen-free flame-retardant glass fiber reinforced polycarbonate composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0027] Using bisphenol A polycarbonate as the base material, flame retardant, compound toughening agent, coupling agent and various processing aids, the above components except glass fiber are mixed in a high-speed mixer 2— 3 minutes, and then extruded pellets at 250-260°C, adding glass fibers during the extrusion process, and after drying, injection molded into standard samples for performance testing.

[0028] See Table 1 for each component and parts by weight (kg) in Examples 1, 2, and 3.

[0029] The prepared resin was injection-molded into test specimens according to the standard size, and the physical properties in the examples were tested according to the ASTM standard, and the performance results are shown in Table 2.

[0030] Table 1

[0031] 1# comparative example 2# embodiment 1 3# embodiment 2 4# embodiment 3 PC 800 640 590 490 E-glass fiber 200 200 200 300 MBS 60 60 60 SMA 60 60 KH550 6 6 6 6 P...

Embodiment 4

[0037] A high-toughness halogen-free flame-retardant glass fiber reinforced polycarbonate composition, the composition includes the following components and content (kg): bisphenol A polycarbonate 300; alkali-free glass fiber 100; methyl methacrylate— Styrene-butadiene copolymer (MBS) 30; silicone oil 10; nano-layered silicate earth 10; 1 part by weight of antioxidant 1076;

Embodiment 5

[0039] A high-toughness halogen-free flame-retardant glass fiber reinforced polycarbonate composition, the composition includes the following components and content (kg): bisphenol A polycarbonate 800; alkali-free glass fiber 400; styrene-maleic anhydride Copolymer (SMA) 150; polysiloxane 100; nano silicon dioxide 150; 10 parts by weight of antioxidant 1076; 15 parts by weight of antioxidant 168; titanate coupling agent 15; lubricant and toner 20.

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 relates to a high-tenacity, halogen-free and flame-retardant fiber glass reinforced polycarbonate composition, which comprises the following components by weight portion: 300 to 800 portions of polycarbonate, 100 to 400 portions of fiber glass, 30 to 150 portions of toughening compatilizer, 10 to 100 portions of organosilicon flame retardant, 10 to 150 portions of nano silicic acid inorganic substances, 1 to 10 portions of antioxidant A, 1 to 15 portions of antioxidant B, 1 to 15 portions of coupling agent, and 0 to 20 portions of other assistants. Compared with the prior art, the composition has the characteristics of good processing property, high impact strength, environmental protection due to free halogen and flame retardance, and the like.

Description

technical field [0001] The invention relates to a polymer composite material, in particular to a high-toughness halogen-free flame-retardant glass fiber-reinforced polycarbonate composition. Background technique [0002] Polycarbonate (PC) has outstanding impact properties. It has the advantages of transparency, dimensional stability, excellent mechanical and electrical properties, and excellent flame retardancy. It is widely used in electronic and electrical, construction, packaging, medical machinery and other fields. The rigidity and heat resistance of polycarbonate materials reinforced with glass fiber are greatly improved compared with PC, and the molding shrinkage rate is small, and the dimensional stability is good. It is mainly used in the field of precision instruments such as some load-bearing parts and measuring instrument covers, cameras, etc. . In addition, although the flame retardancy of PC is better than that of ordinary thermoplastic polymers, it is still d...

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): C08L69/00C08K7/14C08J5/08C08K5/541C08K5/56
Inventor 郑浩
Owner HEFEI GENIUS NEW MATERIALS
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