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High-strength wear-resistant modified natural rubber and preparation method thereof

A natural rubber, high-strength technology, applied in the field of high-strength wear-resistant modified natural rubber and its preparation, can solve the problems of sunlight and ultraviolet aging, short service life, and less mechanical strength of rubber at the same time, to achieve good durability Salt spray corrosion, long service life, good resistance to sunlight and UV aging and weathering effects

Active Publication Date: 2020-05-12
贵州科润密封科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the research on improving the performance requirements of natural rubber is limited to the improvement of various performances at room temperature, and rarely can meet the performance requirements of wear resistance and mechanical strength of rubber at high and low temperatures in some fields at the same time; at the same time, the natural rubber currently on the market Rubber products still have many problems such as sunlight resistance, ultraviolet aging and weather resistance, and short service life.

Method used

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  • High-strength wear-resistant modified natural rubber and preparation method thereof
  • High-strength wear-resistant modified natural rubber and preparation method thereof
  • High-strength wear-resistant modified natural rubber and preparation method thereof

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preparation example Construction

[0086] A second aspect of the present invention provides a method for preparing the high-strength wear-resistant modified natural rubber, comprising the following steps:

[0087] Step 1: Mix natural rubber, EPDM rubber, butadiene rubber, epoxy resin, and emulsifier in a mixer by parts by weight to obtain a rubber compound;

[0088] Step 2: Add reinforcing agent and silane coupling agent to the mixed rubber obtained in Step 1, after stirring, continue to add anti-aging agent, plasticizer and stir;

[0089] Step 3: continue to add the accelerator, and treat at 120°C-130°C and 165°C-175°C for 10-15 minutes, respectively, to obtain high-strength wear-resistant modified natural rubber.

[0090] In a preferred embodiment, the preparation method of the high-strength wear-resistant modified natural rubber comprises the following steps:

[0091] Step 1: In parts by weight, mix natural rubber, EPDM rubber, butadiene rubber, epoxy resin, and emulsifier in a mixer at 78-82°C at 235-245r / ...

Embodiment 1

[0102] Embodiment 1 of the present invention provides a high-strength wear-resistant modified natural rubber, comprising the following raw materials in parts by weight: 65 parts of natural rubber, 17.5 parts of EPDM rubber, 7.5 parts of butadiene rubber, 7.36 parts of carbon black, graphite 1.64 parts of alkene, 3 parts of epoxy resin, 2.5 parts of styrene ethyl trimethoxysilane, 1.5 parts of tetramethylthiuram disulfide, 1.5 parts of N-phenyl-N'-cyclohexyl-p-phenylenediamine, hard 0.22 parts of fatty acid, 0.18 parts of sodium octyl succinate sulfonate, and 4.8 parts of phenyl alkyl sulfonate.

[0103] The natural rubber is No. 1 standard rubber of Hainan Natural Rubber Industry Group Co., Ltd.; the Mooney viscosity (ML100°C 1+4) of the EPDM rubber is 55, purchased from Japan's Sumitomo Chemical ESPRENE series, and the model is 301; the butadiene rubber is Sinopec BR9000; the epoxy equivalent of the epoxy resin is 189g / eq, purchased from Nantong Xingchen Synthetic Materials C...

Embodiment 2

[0109] Embodiment 2 of the present invention provides a high-strength wear-resistant modified natural rubber, comprising the following raw materials in parts by weight: 60 parts of natural rubber, 15 parts of EPDM rubber, 6 parts of butadiene rubber, 6.4 parts of carbon black, graphite 1.6 parts of ene, 2.5 parts of epoxy resin, 2 parts of styrene ethyl trimethoxysilane, 1 part of tetramethylthiuram disulfide, 1 part of N-phenyl-N'-cyclohexyl-p-phenylenediamine, hard 0.17 parts of fatty acid, 0.13 parts of sodium octyl succinate sulfonate, and 4.5 parts of phenyl alkyl sulfonate.

[0110] The natural rubber is No. 1 standard rubber of Hainan Natural Rubber Industry Group Co., Ltd.; the Mooney viscosity (ML100°C 1+4) of the EPDM rubber is 55, purchased from Japan's Sumitomo Chemical ESPRENE series, and the model is 301; the butadiene rubber is Sinopec BR9000; the epoxy equivalent of the epoxy resin is 189g / eq, purchased from Nantong Xingchen Synthetic Materials Co., Ltd., the m...

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Abstract

The invention discloses a high-strength wear-resistant modified natural rubber. The rubber comprises, by weight, 60-70 parts of natural rubber, 15-20 parts of ethylene propylene diene monomer, 6-9 parts of butadiene rubber, 8-10 parts of a reinforcing agent, 2.5-3.5 parts of epoxy resin, 2-3 parts of a silane coupling agent, 1-2 parts of an accelerant, 1-2 parts of an anti-aging agent, 0.3-0.5 part of an emulsifier and 4.5-5 parts of a plasticizer. The rubber shows good mechanical strength at a high temperature and a low temperature, and also has excellent wear resistance and good sunlight andultraviolet aging resistance and weather resistance. In addition, the rubber also has good salt spray corrosion resistance, excellent flame retardance, good comprehensive performances and long service life, and can meet the use requirements of various fields, such as aviation products, windscreen wipers for automobiles, sealing strips, sealing rings and the like.

Description

technical field [0001] The invention relates to the technical field of natural rubber, in particular to a high-strength wear-resistant modified natural rubber and a preparation method thereof. Background technique [0002] Natural rubber is a natural polymer compound mainly composed of cis-1,4-polyisoprene. It is widely used in the national economy for its excellent properties such as high elasticity, high plasticity, low air permeability and low rolling resistance. Various fields and military fields, such as rubber products such as tires and tracks. However, the strength of rubber itself is low. With the rapid development of world industry, higher requirements are put forward for the quality and performance of natural rubber. [0003] At present, the research on improving the performance requirements of natural rubber is limited to the improvement of various performances at room temperature, and rarely can meet the performance requirements of wear resistance and mechanical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L23/16C08L9/00C08L63/00C08K13/02C08K3/04C08K5/40C08K5/18C08K5/09C08K5/42
CPCC08L7/00C08L2205/035C08K2201/014C08L2201/02C08L2201/08C08L23/16C08L9/00C08L63/00C08K13/02C08K3/04C08K3/042C08K5/40C08K5/18C08K5/09C08K5/42
Inventor 高亦岚朱成美
Owner 贵州科润密封科技有限公司
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