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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AI-Extracted 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...
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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.

Technology Topic

PolycarbonateHalogen +9

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

Examples

  • Experimental program(3)

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 60 KH550 6 6 6 6 Phenyl methyl silicone resin 50 40 40 40 Silicate Montmorillonite 50 50 50
[0032] Nano silica 10 10 10 Anti-1076 1 1 1 1 Anti-168 3 3 3 3 lubricant 3 3 3 3
[0033] It can be seen from the above comparative examples and the performance of the examples that the halogen-free flame-retardant glass fiber reinforced polycarbonate composition system of the present invention is a high-toughness, high-strength, insensitive to notch, halogen-free and efficient flame-retardant composition. system.
[0034] Table 2
[0035]

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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