High-temperature-aging-resistant eucommia ulmoides rubber, eucommia ulmoides rubber vulcanized rubber and preparation method of eucommia ulmoides rubber vulcanized rubber

A technology of eucommia rubber and high temperature resistance, which is applied in the field of eucommia rubber, eucommia rubber vulcanizate and its preparation. It can solve the problems of vulcanized eucommia rubber, such as poor high temperature aging resistance and poor tear strength, so as to improve vulcanization efficiency and good tensile strength. Strength, the effect of increasing the degree of cross-linking

Active Publication Date: 2021-01-22
CHEMCHINA ZHUZHOU RUBBER RES & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional sulfur vulcanization system vulcanized eucommia rubber has poor high temperature aging resistance; using sulfur donor or organic peroxide vulcanization system, although the obtained vulcanizate has improved high temperature aging resistance, but its tear strength is very poor

Method used

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  • High-temperature-aging-resistant eucommia ulmoides rubber, eucommia ulmoides rubber vulcanized rubber and preparation method of eucommia ulmoides rubber vulcanized rubber
  • High-temperature-aging-resistant eucommia ulmoides rubber, eucommia ulmoides rubber vulcanized rubber and preparation method of eucommia ulmoides rubber vulcanized rubber
  • High-temperature-aging-resistant eucommia ulmoides rubber, eucommia ulmoides rubber vulcanized rubber and preparation method of eucommia ulmoides rubber vulcanized rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]Put 100g of eucommia rubber raw rubber on a double-roll mill with a roll temperature of 60-80℃ and a roll distance of 0.5mm. After the rubber is wrapped, add 5g of zinc oxide, 2g of stearic acid and coupling agent KH- 5502g, coupling agent CG-si759g, coupling agent si694g, antioxidant RD 2g, accelerator DM 1g, accelerator OTOS 2g, aromatic oil 10g, N330 carbon black 40g (reinforcing agent); after adding, Botong 5 Next film.

[0034]After being left for 24 hours, it was vulcanized on a plate vulcanizer at 170° C. and a pressure of 11 MPa to obtain eucommia rubber vulcanizate. Then, the tensile strength, elongation, tear strength of the obtained eucommia rubber vulcanizate and the retention of thermal aging tensile strength, elongation and tear strength of (70℃, 100℃; 120h) were tested. The performance characterization results of the eucommia rubber vulcanizate are shown in Table 1.

Embodiment 2

[0042]Put 100g of eucommia rubber raw rubber on a two-roll mill with a roll temperature of 60-80°C and a roll pitch of 0.5mm. After the rubber is wrapped, add 3g of zinc oxide, 1g of stearic acid, and coupling agent KH- 5603g, coupling agent KH-5909g, coupling agent si696g, antioxidant RD 2g, accelerator DM 2g, accelerator NOBS 1g, aromatic oil 30g, precipitation method white carbon black 40g (reinforcing agent); after adding, thin Pass the film 5 times.

[0043]After being left for 24 hours, it was vulcanized on a plate vulcanizer at 170° C. and a pressure of 11 MPa to obtain eucommia rubber vulcanizate. Then, the tensile strength, elongation, tear strength of the obtained eucommia rubber vulcanizate and the retention of thermal aging tensile strength, elongation and tear strength of (70℃, 100℃; 120h) were tested. The performance characterization results of the eucommia rubber vulcanizate are shown in Table 2.

Embodiment 3

[0051]Put 100g of eucommia rubber raw rubber on a two-roll mill with a roll temperature of 60-80°C and a roll pitch of 0.5mm. After the rubber is wrapped, add 9g of zinc oxide, 3g of stearic acid, and coupling agent KH- 5903g, coupling agent CG-si755g, coupling agent si698g, antioxidant RD 2g, antioxidant 4010NA 1.5g, accelerator DM 1.5g, accelerator TMTD 1g, aromatic oil 30g, light calcium carbonate 40g; after adding, Thin the film 5 times.

[0052]After being left for 24 hours, it was vulcanized on a plate vulcanizer at 170° C. and a pressure of 11 MPa to obtain eucommia rubber vulcanizate. Then, the tensile strength, elongation, tear strength of the obtained eucommia rubber vulcanizate and the retention of thermal aging tensile strength, elongation and tear strength of (70℃, 100℃; 120h) were tested. The performance characterization results of the eucommia rubber vulcanizate are shown in Table 3.

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Abstract

The invention discloses high-temperature-aging-resistant eucommia ulmoides rubber, eucommia ulmoides rubber vulcanized rubber and a preparation method of the eucommia ulmoides rubber vulcanized rubber. The eucommia ulmoides rubber comprises the following components in parts by weight: 100 parts of eucommia ulmoides rubber raw rubber; 1-3 parts of stearic acid; 3-10 parts of zinc oxide; 1-6 parts of an anti-aging agent; 2-20 parts of a coupling agent Si-69; 1-7 parts of a vulcanization accelerator; 0-50 parts of a reinforcing agent; 5-60 parts of aromatic hydrocarbon oil; 0-3 parts of sulfur; and 0-100 parts of calcium carbonate. According to the invention, the eucommia ulmoides rubber vulcanized rubber obtained after vulcanization of the eucommia ulmoides rubber not only has good physicaland mechanical properties, but also has good high-temperature aging resistance, and solves the problems that vulcanized rubber obtained by a traditional sulfur vulcanization system is poor in aging resistance, and the vulcanized rubber obtained by a sulfur donor or an organic peroxide vulcanization system is poor in mechanical property.

Description

Technical field[0001]The invention relates to the technical field of rubber compounding and vulcanization, in particular to a high temperature aging resistant eucommia rubber, eucommia rubber vulcanizate and a preparation method thereof.Background technique[0002]Eucommia gum is an excellent polymer material with rubber and plastic duality. It has the same chemical composition as natural rubber, but has a different molecular structure. Natural rubber is cis-polyisoprene, and eucommia gum is trans-polyisoprene. As a renewable natural rubber resource, eucommia gum can reduce import dependence and help ensure the supply of domestic rubber resources and the sustainable development of the rubber industry.[0003]Eucommia rubber is chemically active and easily oxidized to become a white brittle body. Anti-aging agents must be added in time during the preparation process. Like natural rubber, eucommia rubber can use traditional sulfur vulcanization systems. However, traditional sulfur vulcani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L91/00C08K13/02C08K3/22C08K5/09C08K5/47C08K3/04C08K13/04C08K7/26C08K3/26
CPCC08L7/00C08K2003/2296C08K2003/265C08L2201/08C08L91/00C08K13/02C08K3/22C08K5/09C08K5/47C08K3/04C08K13/04C08K7/26C08K3/26Y02T10/86
Inventor 彭魁
Owner CHEMCHINA ZHUZHOU RUBBER RES & DESIGN INST
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