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Heat conductive polycarbonate composite and preparation method thereof

A technology of polycarbonate and composition, applied in the field of polycarbonate composition and its preparation, to achieve the effects of improving mechanical properties and processing fluidity, high thermal conductivity, and low cost

Active Publication Date: 2009-04-29
GUANGDONG SILVER AGE SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many patent technologies related to the modification of polycarbonate by filling with inorganic fillers and blending with other polymers, such as Chinese patents CN1434841A, CN1152589A, CN1501960A, CN1152589A, etc., but the above patents are not used for the preparation of thermally conductive polycarbonate material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In terms of mass fraction, weigh 30 parts of Al with an average particle size of 10 μm 2 o 3 , add 1.0 parts of isopropyl dioleic acid acyloxy (dioctyl phosphate acyloxy) titanate coupling agent NDZ-101, mix well under stirring conditions, the above surface modified Al 2 o 3 With 60 parts of polycarbonate, 7 parts of ABS, 1 part of polyethylene wax grafted maleic anhydride copolymer PEW-g-MAH with a graft ratio of 1%, 0.2 parts of hindered phenolic antioxidant 1010 while stirring The mixture was uniformly mixed under the same conditions, and then the resulting mixture was extruded, drawn, pelletized, and injected into samples in an extruder at 250°C. The thermal conductivity of the obtained sample is 0.56 W / m·K, which is 2.8 times that of polycarbonate.

Embodiment 2

[0025] In terms of mass fraction, weigh 40 parts of Al with an average particle size of 15 μm 2 o 3 and 10 parts of Al with an average particle size of 5 μm 2 o 3 , add 1.5 parts of silane coupling agent γ-(2,3 glycidoxy) propyltrimethoxysilane KH560 and 1.0 parts of isopropyl tris (dioctyl pyrophosphate acyloxy) titanate coupling agent NDZ -201, mix uniformly under stirring conditions, and the above-mentioned surface-modified Al 2 o 3 With 35 parts of polycarbonate, 10 parts of ABS, 2.0 parts of low density polyethylene grafted maleic anhydride copolymer LDPE-g-MAH with a graft ratio of 1%, 0.3 parts of composite antioxidant B215 under stirring conditions Mix evenly under the temperature of 240° C., and then extrude, draw, pelletize, and inject the resulting mixture into samples in an extruder. The thermal conductivity of the obtained sample is 0.91 W / m·K, which is 4.6 times that of pure polycarbonate.

Embodiment 3

[0027] In terms of mass fraction, weigh 50 parts of Al with an average particle size of 30 μm 2 o 3 , 15 parts of Al with an average particle size of 15 μm 2 o 3 and 5 parts of Al with an average particle size of 5 μm 2 o 3 , add 1.5 parts of silane coupling agent γ-aminopropyltriethoxysilane KH550 and 1.5 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate coupling agent NDZ-101, Mixed evenly under stirring conditions, the above-mentioned surface-modified Al 2 o 3 With 20 parts of polycarbonate, 7 parts of ABS, 0.3 parts of high-density polyethylene grafted maleic anhydride copolymer HDPE-g-MAH with a graft ratio of 1%, 0.2 parts of composite antioxidant B215 under stirring conditions Mix evenly under the temperature of 240° C., and then extrude, draw, pelletize, and inject the resulting mixture into samples in an extruder. The thermal conductivity of the obtained sample is 1.12 W / m·K, which is 5.6 times that of pure polycarbonate.

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Abstract

The present invention relates to a polycarbonate composition taking Al2O3 as heat-conducting filler and a method for preparing the same. The composition contains 30 to 70 (mass) portions of heat-conducting inorganic filler Al2O3, 20 to 60 (mass) portions of polycarbonate, 5 to 10 (mass) portions of ABS resin, 0.3 to 3 (mass) portions of graft copolymer, 0.1 to 1.0 (mass) portions of antioxidant, and 0.5 to 3 (mass) portions of coupling agent. The composition is characterized in that the composition has higher heat-conducting performance, and good synthesized mechanical performance and processability.

Description

technical field [0001] The invention belongs to the field of polycarbonate compositions, in particular to a 2 o 3 Polycarbonate composition as thermally conductive filler and method for its preparation. Background technique [0002] Polycarbonate, referred to as PC, is an engineering plastic with excellent performance. It has good mechanical properties, heat resistance, electrical insulation, transparency, self-extinguishing, flame retardancy, non-toxicity, dimensional stability and performance. Coloring and other advantages. During use, PC is often modified to further improve its impact resistance, processing fluidity, improve notch sensitivity, reduce internal stress, improve stress cracking and wear resistance, and reduce product costs, for example, Add glass fiber or inorganic filler to fill, and blend with other polymers for modification. The electronic and electrical industry, communication industry and automobile industry are currently one of the largest PC consum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K9/06C09K5/00C08L51/06C08L55/02C08K5/54
Inventor 傅轶张德清李天化刘述梅赵建青
Owner GUANGDONG SILVER AGE SCI & TECH CO LTD
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