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Flame-retardant thermoplastic dynamic silicon-sulfide rubber and preparation method thereof

A technology of dynamic vulcanization and silicone rubber, which is applied in the field of flame-retardant thermoplastic dynamic vulcanization silicone rubber and its preparation, can solve the problems of no further research on flame-retardant thermoplastic dynamic vulcanization silicone rubber, and achieve large-scale industrial production and excellent mechanical properties. Performance, the effect of improving the flame retardancy of materials

Active Publication Date: 2019-04-09
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 prior art, US4500688 and CN106751736A have prepared TPU / silicone rubber thermoplastic elastomers through different dynamic vulcanization systems, but have not further studied flame-retardant thermoplastic dynamic vulcanized silicone rubber

Method used

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  • Flame-retardant thermoplastic dynamic silicon-sulfide rubber and preparation method thereof
  • Flame-retardant thermoplastic dynamic silicon-sulfide rubber and preparation method thereof
  • Flame-retardant thermoplastic dynamic silicon-sulfide rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3 and comparative example 1

[0030] 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.

[0031] The silicone rubber composition of table 1 embodiment 1~3 and comparative example 1

[0032] name

TPU

Silicone rubber compound

Compatibilizer

crosslinking agent

catalyst

flame retardant

Example 1

70

30

5

2.5

0.05

10

Example 2

50

50

5

2.5

0.05

10

Example 3

30

70

5

2.5

0.05

10

Comparative example 1

70

30

5

0

0

10

[0033] The preparation method of the flame-retardant thermoplastic dynamic vulcanized silicone rubber of Examples 1-3 is as follows:

[0034] Step 1) Add thermoplastic polyurethane elastomer (TPU), silicone rubber compound, compatibilizer, crosslinking agent, and flame retardant in the formula shown in Table 1 to the internal mixer, and ...

Embodiment 4～6 and comparative example 2

[0042] 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.

[0043] The silicone rubber composition of table 3 embodiment 4~6 and comparative example 2

[0044] name

TPU

Silicone rubber compound

Compatibilizer

crosslinking agent

catalyst

flame retardant

Example 4

60

40

5

2

0.1

10

Example 5

60

40

10

2

0.1

10

Example 6

60

40

20

2

0.1

10

Comparative example 2

60

40

0

2

0.1

10

[0045] The preparation method of the flame-retardant thermoplastic dynamic vulcanized silicone rubber of Examples 4-6 is as follows:

[0046]Step 1) Add the thermoplastic polyurethane elastomer (TPU), silicone rubber compound, compatibilizer, crosslinking agent, and flame retardant in the formula shown in Table 3 into the internal mixer, and ...

Embodiment 7～10 and comparative example 3

[0055] 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.

[0056] The silicone rubber composition of table 5 embodiment 7~10 and comparative example 3

[0057]

[0058]

[0059] The preparation method of the flame-retardant thermoplastic dynamic vulcanized silicone rubber of Examples 7-10 is as follows:

[0060] Step 1) Add the thermoplastic polyurethane elastomer (TPU), silicone rubber compound, compatibilizer, crosslinking agent, and flame retardant in the formula shown in Table 5 into the internal mixer, and set the temperature to 190°C. The rotational speed is 80 rpm, the banburying time is 4 minutes, and the premix is ​​obtained by extrusion and granulation. 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, the compatibilizer is EMA, an...

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Abstract

The invention discloses flame-retardant thermoplastic dynamic silicon-sulfide rubber and a preparation method thereof. The flame-retardant thermoplastic dynamic silicon-sulfide rubber comprises the following raw materials of: thermoplastic polyurethane elastomer, silicon-rubber mixture, a flame-retarding agent, a crosslinking agent, a compatilizer and a catalyst. Simultaneously, the invention alsodiscloses a method for preparing the flame-retardant thermoplastic dynamic silicon-sulfide rubber by dynamic sulfurization. The vulcanization. The flame-retardant thermoplastic dynamic silicon-sulfide rubber disclosed by the invention has the characteristics of good flame retardance, comfortable handfeel, recoverability and excellent dynamic property and the like, can be widely applicable to thefields of electronics, electrics, automobiles, military industry and communication and the like.

Description

technical field [0001] The invention relates to a flame-retardant 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. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L83/07C08L23/08C08L83/05C08K5/523C08L75/06
CPCC08L75/06C08L75/08C08L2201/02C08L2205/025C08L2205/035C08L2205/08C08L2207/04C08L83/04C08L23/0853C08K5/523C08L23/0869
Inventor 刘超栋金震卢镇辉
Owner INST OF CHEM ENG GUANGDONG ACAD OF SCI
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