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A kind of silica reinforced diene rubber

A technology of silica and diene rubber, applied in the field of material processing, to achieve the effect of good minimum adhesive performance, excellent comprehensive performance and low hysteresis loss

Inactive Publication Date: 2010-12-15
NO 53 RES INST OF CHINA NORTH IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The matching system of the above-mentioned related patents is mainly aimed at the improvement of the dynamic performance of tire rubber products with medium hardness (Shore 70 degrees), such as strength, hysteresis loss and heat generation. Moderate, there is no problem of poor fluidity of rubber processing and affecting bonding performance
The strength, hysteresis loss and adhesive properties of high hardness and high modulus rubber products have not been studied

Method used

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  • A kind of silica reinforced diene rubber
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A two-step mixing process was adopted. In the non-productive mixing stage, 60 parts of first-grade smoked sheet rubber and 40 parts of emulsion polystyrene-butadiene rubber 1502 were added to the 1L Banbury mixer for 2 minutes; then 3 Parts stearic acid, 5 parts zinc oxide, 8 parts coumarone resin, 25 parts Gr175 precipitated silica, 35 parts N220 carbon black, 1 part bis(3-trialkoxysilylpropyl) tetrasulfide material, 0.5 parts of 2-mercaptobenzothiazole, control the mixing temperature at 130-140°C for 15 minutes; remove the glue (the glue removal temperature is 140°C) and continue mixing on the open mill with cooling water, and the temperature drops to Under 80°C, the sheet is lowered to obtain the masterbatch.

[0028] In the productive mixing stage, an open mill is used. After the masterbatch prepared in the non-productive mixing stage is mixed and rolled on the open mill, 2.0 parts of anti-aging agent 4010NA, 1 part of anti-aging agent RD, 3.0 parts of sulfur, 0.8 ...

Embodiment 2

[0031] The composition of the mixed rubber in the non-productive mixing stage includes: 70 parts of first-class smoked sheet rubber, 30 parts of emulsion polystyrene butadiene rubber 1500, 3 parts of stearic acid, 15 parts of zinc oxide, 6 parts of coumarone resin, 44 parts Gr175 precipitated silica, 12 parts of N220 carbon black, 1.5 parts of bis(3-trialkoxysilylpropyl) tetrasulfide, 0.8 parts of 2-mercaptobenzothiazole.

[0032] The rubber compound components in the production mixing stage include: 2.5 parts of anti-aging agent 4010NA, 1 part of anti-aging agent RD, 2.8 parts of sulfur, 0.6 parts of dimorphine disulfide, 1.0 part of N-cyclohexyl-2-benzothiazole sulfenamide .

[0033] The rubber compound processing technology and sample preparation technology are the same as in Example 1. The tensile strength of vulcanized rubber is 21.4MPa, the 300% modulus is 15.7MPa, the elongation at break is 514%, and the Shore hardness is 78H A , tear strength 90kN / m, resilience 25%, ...

Embodiment 3

[0035] The materials used in the non-productive mixing stage include: 70 parts of first-class smoked sheet rubber, 30 parts of emulsion 1500 styrene-butadiene rubber, 3 parts of stearic acid, 5 parts of zinc oxide, 6 parts of coumarone resin, 49 parts of A380 gas phase method II Silicon oxide, 20 parts of N220 carbon black, 2 parts of bis(3-trialkoxysilylpropyl) tetrasulfide, 0.6 part of 2-mercaptobenzothiazole.

[0036] The ingredients in the production mixing stage include: 2.5 parts of anti-aging agent 4010NA, 1 part of anti-aging agent RD, 3 parts of sulfur, 0.8 part of dimorphine disulfide, and 1.0 part of N-cyclohexyl-2-benzothiazole sulfenamide.

[0037] The rubber compound processing technology and sample preparation technology are the same as in Example 1. The tensile strength of vulcanized rubber is 22.8MPa, the elongation at break is 484%, and the Shore hardness is 77H A , Tear strength 87kN / m, resilience 25%, 100 ℃ hysteresis loss 0.1251, 100 ℃ elastic modulus 19....

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Abstract

The invention belongs to the technical field of rubber materials, and relates to rubber materials and processing technology, in particular to the composition and processing technology of silica-reinforced diene rubber. The invention relates to a silica-reinforced diene rubber, which uses diene rubber as the main polymer, silica as the main reinforcing agent, silane as the coupling agent, zinc oxide as the active agent, and 2 -Mercaptobenzothiazole is used as a catalyst, especially related to the combined application of silicon dioxide and zinc oxide, and the rubber composition is prepared by adopting reactive mixing technology in a closed mixing equipment. The rubber composition has excellent comprehensive performance, especially low dynamic heat generation and good bonding performance.

Description

1. Technical field [0001] The invention belongs to the technical field of material processing, and relates to rubber materials and processing technology, in particular to the composition and processing technology of silica-reinforced diene rubber. 2. Background technology [0002] For applications requiring high strength, high wear resistance, low hysteresis, and low heat generation rubber, especially the application of high hardness and high modulus industrial products such as track vehicle solid tires, a large amount of carbon black reinforcing filler and sulfur vulcanization system are usually used Preparation, in order to improve the compatibility of hydrocarbon rubber and precipitated silica, it is generally achieved by surface treatment of silica. In recent years, catalysts are often used to promote the silanization reaction of silica, and the catalytic reaction is generally carried out at 130°C to 200°C. [0003] L.A.E.M.Reuvekamp et al. introduced a tire tread compo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/00C08K3/36
Inventor 高永忠谢富霞孔义李拥军孙志勇杜华太
Owner NO 53 RES INST OF CHINA NORTH IND GRP
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