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(CO)polymer matrix composites comprising thermally-conductive particles and a nonvolatile diluent and methods of making the same

A composite material, non-volatile technology, applied in the field of (co)polymer matrix composite materials containing thermally conductive particles and non-volatile diluents and its preparation, can solve the problem of not showing heat absorption or heat dissipation characteristics, etc. question

Inactive Publication Date: 2021-12-21
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such thermal interface materials typically exhibit good thermal conduction characteristics compared to unfilled or lightly filled adhesive compositions, but may not exhibit good heat absorption or heat loss compared to metallic heat sinks or heat sinks Dispersion

Method used

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  • (CO)polymer matrix composites comprising thermally-conductive particles and a nonvolatile diluent and methods of making the same
  • (CO)polymer matrix composites comprising thermally-conductive particles and a nonvolatile diluent and methods of making the same
  • (CO)polymer matrix composites comprising thermally-conductive particles and a nonvolatile diluent and methods of making the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1A

[0250] A plastic mixing cup (obtained under the trade designation "MAX 300 LONG CUP" for a speed mixer obtained under the trade designation "SPEEDMIXERDAC600.2 VAC-LR", both from FlackTek, Inc., Landrum, South Carolina .(Landrum, SC))) was charged with 8.1 grams of ultra-high molecular weight polyethylene (UHMWPE) (obtained from Celanese Corporation, Irving, TX under the trade designation "GUR-2126"). )), 192.0 grams of aluminum particles (obtained from Transmet Corporation (Columbus, OH) under the trade designation "ALUMINUM SHOTS RSA400-2N"), and 32.0 grams of paraffin wax (obtained from Brenntag Great Lakes, Inc. (Wauwatosa, WI)) of Wauwatosa, Wisconsin. The material was mixed at 1000 rpm for 30 seconds, then at 1200 rpm for 30 seconds, then at 800 rpm for 60 seconds. Mixing is carried out under vacuum and 50 mbar.

[0251] The slurry was removed from the mixer, stirred by hand to remove material from the walls of the cup, and then spooned onto a 3 mil (75 micron) thermal...

Embodiment 1B

[0256] Example 1B was prepared as described in Example 1A. Cut 1.5" x 1.5" squares from the membrane. The square was placed between two release liners, and then between two metal plates. The sample was placed in a hydraulic press (obtained from Wabash MPI (Wabash, IN) under the trade designation "WABASH-GENESIS MODEL G30H-15-LP" (Wabash MPI (Wabash, IN)) and heated at ambient temperature (about 25°C) Down, compress for 60 seconds at 15 tons.

[0257] The resulting polymer matrix composite was 48.0 mil (1.22 mm) thick (as determined in the "Density and Porosity Test") and had 2.59 W / m°K (as determined by the "Thermal Conductivity Test") ) of the measured thermal conductivity.

Embodiment 1C

[0259] Example 1C was prepared as described in Example 1B except that a thin layer of thermal grease (obtained from Wakefield Thermal Solutions, Pelham, NH (Wakefield Thermal Solutions (Pelham, NH))) was applied to both sides of the sample to reduce surface contact resistance during testing.

[0260] The resulting polymer matrix composite was 48.0 mil (1.22 mm) thick (as determined in the "Density and Porosity Test") and had 3.70 W / m°K (as determined by the "Thermal Conductivity Test") ) of the measured thermal conductivity.

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Abstract

The invention provides (Co)polymer matrix composites including: a porous (co)polymeric network, a nonvolatile diluent, and a multiplicity of thermally-conductive particles distributed within the (co)polymeric network, wherein the thermally-conductive particles are present in a range from 15 to 99 weight percent, based on the total weight of the (co)polymer matrix (including the thermally-conductive particles and the nonvolatile diluent). Optionally, the (co)polymer matrix composite volumetrically expands by at least 10% of its initial volume when exposed to a temperature of at least 135 DEG C. Methods of making and using the (co)polymer matrix composites are also disclosed. The (co)polymer matrix composites are useful, for example, as heat dissipating or heat absorbing articles, as fillers, thermal interface materials, and thermal management materials, for example, in electronic devices, more particularly mobile handheld electronic devices, power supplies, and batteries.

Description

Background technique [0001] Integrated circuits, active and passive components, optical drives, batteries, sensors and motors generate heat during use. In order to prolong the long-term and continuous use of the device, it is necessary to dissipate heat. Finned metal blocks and heat sinks containing heat pipes are often used as heat sinks to dissipate heat generated by the device during use. Materials commonly used to provide a thermal bridge between a heat-generating component and a heat sink / sink include gel blocks, liquid-to-solid phase-change compounds, greases, and mechanically clamped surfaces such as printed circuit boards (PCBs) and heat sinks. Liner between sinks. These articles are commonly referred to as thermal interface materials (TIMs). [0002] Managing the charging and discharging of the battery system is usually done via an electronic battery management system. Thermal management is typically via heat transfer materials and a combination of active and pass...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/00C08J9/28C08K3/01C08K3/22C08L23/06
CPCC08J9/0066C08J9/28C08J2201/052C08J2323/06C08L91/00C08L2207/068C08L23/06C08K3/10C08J9/38C08J2201/0522C08J2391/00C08J2391/08C08J2423/04C08L91/08C09K5/14
Inventor 塞巴斯蒂安·戈里斯德里克·J·德纳保尔·T·海因斯小克林顿·P·沃勒马里奥·A·佩雷斯巴拉特·R·阿查理雅罗纳德·W·奥森
Owner 3M INNOVATIVE PROPERTIES CO