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Conductive thermal plastic dynamic vulcanizing silicone rubber and preparation method thereof

A dynamic vulcanization and silicone rubber technology, which is applied in the field of conductive thermoplastic dynamic vulcanized silicone rubber and its preparation, can solve the problem that the product fails to meet the requirements of use, there is no further research on the preparation of conductive thermoplastic dynamic vulcanized silicone rubber, and no dynamic vulcanization is used. Vulcanization advanced technology and other issues, to achieve the effect of large-scale industrial production, no toxic and volatile gas pollution, excellent mechanical properties

Active Publication Date: 2019-03-26
INST OF CHEM ENG GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing literature, US4500688 and CN106751736A have prepared TPU / silicone rubber thermoplastic elastomers through different dynamic vulcanization systems, but have not further studied the preparation of conductive thermoplastic dynamic vulcanized silicone rubber
CN104098795A obtains a conductive thermoplastic elastomer by simply blending thermoplastics, rubber particles, and conductive fillers, but it does not use the advanced technology of dynamic vulcanization, and the properties of the prepared products have not been well satisfied actual use requirements

Method used

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  • Conductive thermal plastic dynamic vulcanizing silicone rubber and preparation method thereof
  • Conductive thermal plastic dynamic vulcanizing silicone rubber and preparation method thereof
  • Conductive thermal plastic dynamic vulcanizing silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3 and comparative example 1

[0032] The silicone rubber compositions of Examples 1-3 and Comparative Example 1 are shown in Table 1, and the compositions stated in Table 1 are all parts by mass.

[0033] The silicone rubber composition of table 1 embodiment 1~3 and comparative example 1

[0034]

[0035] The preparation method of the conductive thermoplastic dynamic vulcanized silicone rubber of embodiments 1-3 is as follows:

[0036] Step 1) Add thermoplastic polyurethane elastomer (TPU), silicone rubber compound, compatibilizer, crosslinking agent, and conductive filler in the formula shown in Table 1 to the internal mixer, set the temperature to 170°C, and 40rpm, banburying time 5min, extrusion granulation to obtain the premix. The thermoplastic polyurethane elastomer used in Examples 1 to 3 is WHT-8285 (polyether) of Wanhua Chemical Company, the silicone rubber compound is EN-5150A of Dongjue Silicone Company, and the compatibilizer is EVA, cross-linked The agent is Dow Corning's hydrogen-contain...

Embodiment 4～6 and comparative example 2

[0045] The silicone rubber compositions of Examples 4-6 and Comparative Example 2 are shown in Table 3, and the compositions stated in Table 3 are all parts by mass.

[0046] The silicone rubber composition of table 3 embodiment 4~6 and comparative example 2

[0047]

[0048]

[0049]The preparation method of the conductive thermoplastic dynamic vulcanized silicone rubber of Examples 4-6 is as follows:

[0050] Step 1) Add thermoplastic polyurethane elastomer (TPU), silicone rubber compound, compatibilizer, crosslinking agent, and conductive filler in the formula shown in Table 3 to the internal mixer, set the temperature to 180°C, and 60rpm, banburying time 7min, extrusion granulation to obtain the premix. The thermoplastic polyurethane elastomer that uses among the embodiment 4~6 is the S-185ALL (polyester) of Taiwan Kunzhong Company, and the silicone rubber compound is EN-8151 of Dongjue Silicone Company, and the compatibilizer is ethylene acrylic acid copolymer ( E...

Embodiment 7～10 and comparative example 3

[0059] The silicone rubber compositions of Examples 7-10 and Comparative Example 3 are shown in Table 5, and the compositions stated in Table 5 are all parts by mass.

[0060] The silicone rubber composition of table 5 embodiment 7~10 and comparative example 3

[0061]

[0062]

[0063] The preparation method of the conductive thermoplastic dynamic vulcanized silicone rubber of Examples 7-10 is as follows:

[0064] Step 1) Add thermoplastic polyurethane elastomer (TPU), silicone rubber compound, compatibilizer, crosslinking agent, and conductive filler in the formula shown in Table 5 to the internal mixer, set the temperature to 190°C, and 80rpm, banburying time 4min, extrusion granulation to obtain the premix. The thermoplastic polyurethane elastomer used in Examples 7-10 is WHT-8285 of Wanhua Chemical Company, the silicone rubber compound is EN-5150A of Dongjue Silicone Company, and the crosslinking agent is hydrogen-containing silicone oil of Dow Corning Company, mod...

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Abstract

The invention discloses conductive thermal plastic dynamic vulcanizing silicone rubber and a preparation method thereof. The conductive thermal plastic dynamic vulcanizing silicone rubber is preparedfrom the following raw materials of themoplastic urethane elastomers, rubber mixings of silicone rubber, conductive filling materials, crosslinking agents, compatilizers and catalysts. Meanwhile, theinvention also discloses a dynamic vulcanizing preparation method of the conductive thermal plastic dynamic vulcanizing silicone rubber. The prepared conductive thermal plastic dynamic vulcanizing silicone rubber has the characteristics of good conduction performance, comfortable hand feeling, recovery performance, excellent mechanical performance and the like. The conductive thermal plastic dynamic vulcanizing silicone rubber can be widely applied to the fields of electronics and electricity, automobiles, war industry, communication and the like.

Description

technical field [0001] The invention relates to a conductive thermoplastic dynamic vulcanized silicone rubber and a preparation method thereof. Background technique [0002] Dynamic vulcanization is an emerging rubber vulcanization technology. It is a process of melting and blending unvulcanized rubber with thermoplastic materials under high shear, and adding a vulcanizing agent to vulcanize it. In this process, the thermosetting rubber phase (dispersed phase) is uniformly dispersed in the thermoplastic material (continuous phase) in a certain particle size range, and at the same time the rubber phase particles are cross-linked, and finally thermoplastic dynamic vulcanizate (TPV) is obtained. The most important feature of dynamic vulcanization is to carry the thermosetting rubber phase in thermoplastic materials, so as to combine the properties of thermosetting rubber and thermoplastic plastics, and at the same time facilitate the processing and recycling of materials. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L83/04C08L23/08C08L83/05C08K3/04C08K7/06
CPCC08K2201/001C08L75/08C08L83/04C08L2205/025C08L2205/035C08L2205/08C08L2312/00C08L23/0853C08K3/04C08K7/06
Inventor 师文博卢镇辉文铭孝
Owner INST OF CHEM ENG GUANGDONG ACAD OF SCI
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