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 h

Method used

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

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Example Embodiment

[0027] In a specific embodiment of the present invention, a method for preparing a thermally conductive thermoplastic vulcanized rubber elastomer material is provided, which includes the following steps: (1) Surface modification and drying of the thermally conductive filler using a coupling agent to obtain a modified thermally conductive filler; (2) ) Mix the modified thermally conductive filler with the matrix resin, melt blend, extrude, pelletize, and dry to obtain thermally conductive resin pellets; (3) Mix the thermally conductive resin pellets with rubber and vulcanization system to perform 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, boron nitride, alumin...

Example Embodiment

[0040] Example 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 surface treated with a tetrabutyl titanate coupling agent, and then heated at 60°C. Dry in an air oven for 6 hours;

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

[0044] (3) Then put the thermally conductive polypropylene pellets and EPDM crude rubber in a blast oven at 80°C for 2 hours, then take out the EPDM crud...

Example Embodiment

[0047] Example 2

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

[0049] (1) First use titanate coupling agent NDZ101 to modify the surface of the graphite sheet, and then dry it in a blast oven at 60°C for 6 hours;

[0050] (2) Polypropylene pellets and modified graphite flakes are melt blended, extruded, water-cooled, and pelletized in a twin-screw extruder at a ratio of 100:15 at a ratio of 100:15 to finally prepare thermally conductive polypropylene pellets. material;

[0051] (3) Then put the thermally conductive polypropylene pellets and EPDM crude rubber in a blast oven at 80°C for 2 hours, then take out the EPDM crude rubber and place it in an internal mixer at 150°C at 80°C. Mastication for 5 minutes at a rotation speed of / min to obtain ...

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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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