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
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  • 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 po

Method used

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

Examples

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Example

[0026] Examples 1 to 3

[0027] Taking 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 placed in a high-speed mixer and mixed for 2— 3 minutes, and then extruded and pelletized at 250-260 ° C, glass fiber was added during the extrusion process, and after drying, injection molding into standard specimens for performance testing.

[0028] The components and parts by weight (kg) in Examples 1, 2, and 3 are shown in Table 1.

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

[0030] Table 1

[0031] 1# Contrast ratio 2# Example 1 3# Example 2 4# Example 3 PC 800 640 590 490 E-glass fiber 200 200 200 300 MBS 60 60 60 SMA 60 ...

Example Embodiment

[0036] Example 4

[0037] A high toughness halogen-free flame retardant glass fiber reinforced polycarbonate composition, the composition comprises the following components and contents (kg): bisphenol A type polycarbonate 300; alkali-free glass fiber 100; methyl methacrylate— Styrene-butadiene copolymer (MBS) 30; silicone oil 10; nano-layered earth silicate 10; 1 part by weight of antioxidant 1076; 1 part by weight of antioxidant 168;

Example Embodiment

[0038] Example 5

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

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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

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Application Information

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IPC IPC(8): C08L69/00C08K7/14C08J5/08C08K5/541C08K5/56
Inventor 郑浩
Owner HEFEI GENIUS NEW MATERIALS
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