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Thermally conductive and dimensionally stable liquid crystalline polymer composition

A technology of liquid crystal polymers and thermally conductive polymers, applied in liquid crystal materials, heat exchange materials, cooling/ventilation/heating transformation, etc., can solve problems such as poor mechanical properties and inability to apply optical pickup bases

Inactive Publication Date: 2012-12-26
TICONA LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of the compositions disclosed here are too poor to be applied to optical pickup bases

Method used

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  • Thermally conductive and dimensionally stable liquid crystalline polymer composition
  • Thermally conductive and dimensionally stable liquid crystalline polymer composition

Examples

Experimental program
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Effect test

Embodiment 1-4 and comparative example C-1-C-6

[0072] The compositions listed in Table 1 were prepared and tested according to the methods disclosed above. Examples 1-4 show a combination of properties including good tensile strength, N-Charpy impact, thermal conductivity and isotropic dimensional stability. Comparative Examples C-1-C-6 exhibit at least one aspect of undesirable performance when compared to the Examples.

[0073] Comparative Example C-1 containing talc with an average particle size of 5 μm (less than the 10 μm-100 μm disclosed herein) exhibited significantly lower tensile strength and N-Charpy impact strength than Example 2.

[0074] Comparative Example C-2 containing glass flakes instead of talc A showed significantly lower thermal conductivity (3.7 W / m K) compared to Example 2 (5.0 W / m K); and Comparative Example C- 2 exhibited a lower tensile strength (67 MPa) than Example 2 (78 MPa).

[0075] Comparative Example C-3, in the absence of Talc A, exhibited a TD-MD value of 12 compared to Example 2 which ...

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Abstract

A thermally conductive polymer composition is disclosed including liquid crystalline polymer; graphite, talc and low aspect fibrous filler. The composition has a thermal conductivity of at least about 3 W / m DEG K.

Description

field of invention [0001] This invention relates to thermally conductive, dimensionally stable liquid crystal polymer compositions. Background of the invention [0002] Many electronic and electrical devices generate heat during operation, and as microprocessors became faster, their semiconductor elements became smaller and more densely packed. The resulting increased amount of heat they generate can lead to device failure and shortened lifetime. Therefore, there is a need for more efficient methods of cooling semiconductor components. [0003] Cooling components such as heat sinks, thermal sheets, heat pipes, water coolers, fans, etc. are often used to move heat away from its source. Heat sinks, for example, are often fabricated from metals or ceramics with high thermal conductivity, but they can be bulky. [0004] It is desirable to manufacture cooling assemblies from polymeric materials because many of these materials can be easily formed into various shapes. Also, si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/38C08K3/00C08K7/14H05K7/20
CPCC09K19/52C09K5/14C09K19/3809H05K7/20481C08K3/00C08K7/14C09K19/38H05K7/20
Inventor Y·佐贺
Owner TICONA LLC