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Preparation method and product of heat-conductive thermoplastic vulcanized rubber elastomer material

A rubber elastomer, thermoplastic vulcanization technology, applied in heat exchange materials, chemical instruments and methods, etc., can solve the problems of single processing and molding method of rubber materials, affecting the service life of electronic components, difficult to reuse, etc., to achieve excellent green Effects of environmental protection, added value enhancement, and excellent thermal conductivity

Inactive Publication Date: 2018-12-18
AAC TECH NANJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electronic products will vibrate and release heat during use. If the heat cannot be discharged in time, it will seriously affect the service life of electronic components
[0003] Although traditional heat-conducting rubber materials have many characteristics such as high elasticity, high thermal conductivity, and insulation, due to the single processing and molding method of the rubber material itself, and the difficulty of repeated use after molding, it is largely limited in its application. Applications on electronic products

Method used

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  • Preparation method and product of heat-conductive thermoplastic vulcanized rubber elastomer material

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preparation example Construction

[0027] In a specific embodiment of the present invention, a method for preparing a thermally conductive thermoplastic vulcanizate elastomer material is provided, comprising the following steps: (1) using a coupling agent to modify the surface of a thermally conductive filler and drying it to obtain a modified thermally conductive filler; (2) ) mixing the modified thermally conductive filler with the matrix resin, melt blending, extruding, granulating and drying to obtain thermally conductive resin pellets; (3) mixing the thermally conductive resin pellets with rubber and a vulcanization system, and performing Dynamic vulcanization reaction and extrusion granulation to obtain thermally conductive thermoplastic vulcanized rubber elastomer material.

[0028] In a specific embodiment of the present invention, the thermally conductive filler is carbon nanotube, graphene, graphite, carbon black, silicon carbide, boron carbide, chromium carbide, tungsten carbide, silicon nitride, boro...

Embodiment 1

[0041] The method for preparing a thermally conductive thermoplastic vulcanized rubber elastomer material in this embodiment, selects polypropylene as the resin phase, EPDM rubber as the rubber phase, and aluminum nitride as the thermally conductive filler, including the following steps:

[0042] (1) First, the aluminum nitride powder is calcined in a boron nitride crucible at 1600-1850°C, and after cooling, the aluminum nitride powder is treated with a tetrabutyl titanate coupling agent, and then the aluminum nitride powder is heated in a drum at 60°C. Dry in the air oven for 6 hours;

[0043] (2) According to the ratio of 100:20, the polypropylene pellets and the treated aluminum nitride powder are melt-blended, extruded, water-cooled, and granulated in a twin-screw extruder at 200°C at a speed of 60r / min. Prepared thermally conductive polypropylene pellets;

[0044] (3) Then put the thermally conductive polypropylene pellets and EPDM raw rubber in a blast oven and dry at 8...

Embodiment 2

[0048] The method for preparing the thermally conductive thermoplastic vulcanized rubber elastomer material in this embodiment, selects polypropylene as the resin phase, EPDM rubber as the rubber phase, and graphite sheet as the thermally conductive filler, including the following steps:

[0049] (1) Firstly, the surface of the graphite sheet was modified by titanate coupling agent NDZ101, and then dried in a blast oven at 60°C for 6 hours;

[0050] (2) Melt blending, extruding, water cooling, and granulation in a twin-screw extruder at 200°C in a ratio of 100:15 to the polypropylene pellets and the modified graphite flakes to prepare thermally conductive polypropylene pellets material;

[0051] (3) Then put the thermally conductive polypropylene pellets and EPDM raw rubber in a blast oven and dry at 80°C for 2 hours, take out the EPDM raw rubber and place it in an internal mixer at 150°C for 80r masticate for 5min at a rotating speed of 1 / min to obtain EPDM plasticized rubbe...

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Abstract

The invention relates to the technical field of functional elastomer materials, and provides a preparation method and a product of a heat-conductive thermoplastic vulcanized rubber elastomer material,the preparation method comprises: (1) using a coupling agent for surface modification and drying of a heat conductive filler; (2) mixing the modified heat conductive filler with matrix resin for meltblending, extruding, granulating and drying to obtain a heat-conductive resin pellet; (3) mixing the heat-conductive resin pellet with rubber and a vulcanization system to carry out dynamic vulcanization reaction, and squeezing and granulating to obtain the heat-conductive thermoplastic vulcanized rubber elastomer material. The heat-conductive thermoplastic vulcanized rubber elastomer material prepared by the method has the advantages of a small amount of the heat conductive filler, excellent thermal conductivity, excellent processing and forming property, simple production process, high production efficiency and recyclability, and the like and can be widely applied in electronic electrician, automotive and many other fields, so that the heat-conductive thermoplastic vulcanized rubber elastomer material has broad market application prospects.

Description

【Technical field】 [0001] The invention relates to the technical field of functional elastomer materials, in particular to a preparation method and product of a thermally conductive thermoplastic vulcanized rubber elastomer material. 【Background technique】 [0002] With the development of electronic technology, electronic technology products tend to be lightweight and high-performance. Electronic products will vibrate and release heat during use. If the heat cannot be discharged in time, the service life of electronic components will be seriously affected. [0003] Although traditional heat-conducting rubber materials have many characteristics such as high elasticity, high thermal conductivity, and insulation, due to the single processing and molding method of the rubber material itself, and the difficulty of repeated use after molding, it is largely limited in its application. Applications on electronic products. [0004] Thermally conductive thermoplastic vulcanizate mate...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/12C08L61/06C08L23/08C08L23/28C08L77/02C08K9/04C08K3/28C08K7/00C08K3/04C08K3/22C09K5/14
CPCC08K2003/2296C08K2003/282C08L23/0815C08L23/16C08L23/283C08L2205/03C09K5/14C08L23/12C08L61/06C08K9/04C08K3/28C08K7/00C08K3/042C08L77/02C08K3/22
Inventor 徐浩王宏远王萃林
Owner AAC TECH NANJING
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