A kind of oil-resistant thermoplastic dynamic vulcanized silicone rubber and its preparation method

A technology of dynamic vulcanization and silicone rubber, which is applied in the field of oil-resistant thermoplastic dynamic vulcanization silicone rubber and its preparation, can solve the problems of no further research on the preparation of oil-resistant thermoplastic dynamic vulcanization silicone rubber and the inability to meet the oil resistance requirements of materials, and achieves the realization of Large-scale industrial production, no toxic volatile gas pollution, and the effect of improving oil resistance

Active Publication Date: 2021-12-07
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 the preparation of oil-resistant thermoplastic dynamic vulcanized silicone rubber
CN106554573A adopts the method for dynamic vulcanization to prepare a kind of oil resistance TPV with EPDM / SEBS as the base material, and it is at 100 ℃ at 903 # After soaking in oil for 24 hours, the volume change rate can reach 120%, but due to the limitation of its base material, it obviously cannot meet the oil resistance requirements of materials in industries such as automobiles and machinery

Method used

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  • A kind of oil-resistant thermoplastic dynamic vulcanized silicone rubber and its preparation method
  • A kind of oil-resistant thermoplastic dynamic vulcanized silicone rubber and its preparation method
  • A kind of oil-resistant thermoplastic dynamic vulcanized silicone rubber and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3 and comparative example 1

[0031] 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.

[0032] The silicone rubber composition of table 1 embodiment 1~3 and comparative example 1

[0033] name TPU Silicone rubber compound Compatibilizer crosslinking agent catalyst Methicone Ethyl silicone oil Phenyl silicone oil 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

[0034] The preparation method of the oil-resistant thermoplastic dynamic vulcanized silicone rubber of Examples 1-3 is as follows:

[0035] Step 1) Add thermoplastic polyurethane elastomer (TPU), silicone rubber compound, compatibilizer, crosslinking agent, and silicone oil in the formula shown in Table 1 into the internal mixer, set the temperature to 160°C, and the speed to ...

Embodiment 4～6 and comparative example 2

[0044] 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.

[0045] The silicone rubber composition of table 3 embodiment 4~6 and comparative example 2

[0046]

[0047]

[0048] The preparation method of the oil-resistant thermoplastic dynamic vulcanized silicone rubber of Examples 4-6 is as follows:

[0049] Step 1) Add thermoplastic polyurethane elastomer (TPU), silicone rubber compound, compatibilizer, crosslinking agent, and silicone oil in the formula shown in Table 3 to the internal mixer, set the temperature to 200°C, and the speed to be 30rpm, banburying time 3min, extrusion granulation to obtain the premix. The thermoplastic polyurethane elastomer that uses among the embodiment 4~6 is the S-185ALL (polyester) of Chinese Taiwan Kinzon Company, the silicone rubber compound is EN-8151 of Dongjue Silicone Company, and the compatibilizer is ethylene acrylic acid...

Embodiment 7～10 and comparative example 3

[0058] 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.

[0059] The silicone rubber composition of table 5 embodiment 7~10 and comparative example 3

[0060] name TPU Silicone rubber compound Compatibilizer crosslinking agent catalyst Methyl phenyl silicone oil Example 7 60 40 5 1 0.2 10 Example 8 60 40 5 1 0.2 15 Example 9 60 40 5 1 0.2 20 Example 10 60 40 5 1 0.2 30 Comparative example 3 60 40 5 0 0 30

[0061] The preparation method of the oil-resistant thermoplastic dynamic vulcanized silicone rubber of Examples 7-10 is as follows:

[0062] Step 1) Add the thermoplastic polyurethane elastomer (TPU), silicone rubber compound, compatibilizer, crosslinking agent, and silicone oil in the formula shown in Table 5 into the internal mixer, set the temperature to 190°C, and the speed to be 8...

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Abstract

The invention discloses an oil-resistant thermoplastic dynamic vulcanized silicone rubber and a preparation method thereof. This oil-resistant thermoplastic dynamic vulcanized silicone rubber is composed of the following raw materials: thermoplastic polyurethane elastomer, silicone rubber compound, silicone oil, crosslinking agent, compatibilizer, catalyst. At the same time, a method for preparing oil-resistant thermoplastic dynamic vulcanized silicone rubber by using dynamic vulcanization is also disclosed. The oil-resistant thermoplastic dynamic vulcanized silicone rubber prepared by the invention has the characteristics of comfortable hand feeling, good oil resistance, recyclability, excellent mechanical properties, etc., and can be widely used in the fields of electronics, automobiles, military industry and the like.

Description

technical field [0001] The invention relates to an oil-resistant 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 Patents(China)
IPC IPC(8): C08L75/06C08L75/08C08L83/07C08L83/04C08L23/08C08J3/24
CPCC08J3/246C08J2375/06C08J2375/08C08J2383/07C08J2423/08C08J2475/08C08J2483/04C08J2483/07
Inventor 刘超栋麦裕良师文博文铭孝
Owner INST OF CHEM ENG GUANGDONG ACAD OF SCI
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