Biobased silicon-containing alternating EP rubber and preparation method thereof

An ethylene-propylene rubber, bio-based technology, applied in transportation and packaging, special tires, tire parts, etc., can solve problems such as inability to exert rubber properties, achieve excellent interfacial compatibility, increase tensile strength and elastic modulus , High wet skid resistance effect

Active Publication Date: 2017-02-15
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the strict trans structure in the molecular chain of eucommia gum, it crystalliz

Method used

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  • Biobased silicon-containing alternating EP rubber and preparation method thereof
  • Biobased silicon-containing alternating EP rubber and preparation method thereof
  • Biobased silicon-containing alternating EP rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Take the above steps, control the amount of triethylsilane to be 40% of Eucommia gum, the Wilkinson catalyst consumption is 5% of Eucommia gum, the reaction temperature is 100°C, the reaction time is 8 hours, the degree of hydrosilation of the Eucommia gum obtained by the reaction was 57.33%.

[0042] Implementation column 2-5

[0043] Compared with Example 1, the difference is that the amount of the Wilkinson catalyst is 0.5%, 3%, 7%, and 9% of the dry gum mass of Eucommia gum, respectively. The hydrosilation degree of obtained Eucommia gum is as shown in table 1:

[0044] Table 1

[0045] Catalyst concentration (%) Hydrosilation degree (%) Example 2 0.5 35.73 Example 3 3 50.20 Example 4 7 50.72 Example 5 9 43.28

Embodiment 6～9

[0047] Compared with Example 1, the difference is that the addition of triethylsilane is respectively 5%, 15%, 60%, and 80% of the dry gum quality of Eucommia gum. The degree of hydrosilation of the obtained eucommia gum is shown in Table 2.

[0048] Table 2

[0049] Triethylsilane dosage (%) Hydrosilation degree (%) Example 6 5％ 28.97 Example 7 15％ 43.14 Example 8 60％ 32.33 Example 9 80％ 30.25

Embodiment 10～13

[0051] Compared with Example 1, the difference is that the reaction temperatures are respectively 40°C, 60°C, 80°C, 100°C, and 120°C. The degree of hydrosilation of the obtained eucommia gum is shown in Table 3.

[0052] table 3

[0053] Reaction temperature (°C) Hydrosilation degree (%) Example 10 40 16.25 Example 11 60 17.12 Example 12 80 27.28 Example 13 110 45.16

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Abstract

TThe invention relates to a preparation method of biobased silicon-containing alternating EP rubber. Triethylsilane is used as a modifier, and a hydrosilation reaction is carried out for modification of gutta-percha. The triethylsilane modification reaction is carried out for modification of gutta-percha, the method can be carried out in a solution at a normal pressure, the operation is simple, the method has low requirements for equipment, and the method is easy to amplified and promoted. The modified rubber has strictly alternative ethylene and propylene, in the prerequisite that aging resistance and weatherability are not reduced, a reactive group is introduced to a gutta-percha main chain, and possibilities are provided for further modification. Compared with original gutta-percha elastomer, the structure has excellent interface compatibility as well as high moisture and slip resistance.

Description

technical field [0001] The invention relates to the field of rubber materials, in particular to a bio-based silicon-containing alternating ethylene-propylene rubber. Background technique [0002] Ethylene-propylene rubber is the third largest synthetic rubber variety in the world after styrene-butadiene rubber and butadiene rubber. It is widely used in the automotive industry, electronics, construction and other fields due to its excellent aging resistance, heat resistance, and cold resistance. With the continuous increase of modified ethylene-propylene rubber varieties, the application fields of ethylene-propylene rubber are becoming wider and wider. Controllable long-chain branched ethylene-propylene rubber solves the problem of the contradiction between its processing performance and physical properties. Bromination, chlorination, sulfonation and other treatments can improve its compatibility with other rubber types, and introduce conjugated diene or vinyl monomer as the ...

Claims

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Application Information

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IPC IPC(8): C08C19/25C08C19/02C08L7/00C08L23/16B60C1/00
CPCB60C1/0016C08C19/02C08C19/25C08L7/00C08L23/16
Inventor 岳冬梅赵鑫陈禹霖张立群
Owner BEIJING UNIV OF CHEM TECH
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