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Trans-polyisoprene (TPI) rubber-cis-polyisoprene rubber composition and processing technique thereof

A technology of polyisoprene and rubber composition, which is applied in the fields of rubber, rubber processing or tire manufacturing, which can solve the problems of reducing the interaction between fillers and polymers, and achieve improved wear resistance, high wear resistance and low heat generation Effect

Active Publication Date: 2014-06-25
EVE RUBBER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Patent CN101121803A discloses the formula for preparing the blending of trans polyisoprene rubber and rubber. After TPI is plasticized, it is directly blended with rubber and then mixed with filler. This process will also reduce the interaction between filler and polymer.

Method used

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  • Trans-polyisoprene (TPI) rubber-cis-polyisoprene rubber composition and processing technique thereof
  • Trans-polyisoprene (TPI) rubber-cis-polyisoprene rubber composition and processing technique thereof
  • Trans-polyisoprene (TPI) rubber-cis-polyisoprene rubber composition and processing technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Formula: SMR2080; synthetic trans polyisoprene TPI20; N115 carbon black 40; silica 10; silane coupling agent X50S3; zinc oxide 3.5; stearic acid 2; antioxidant RD1.5; Wax 1; accelerator CZ1.7; sulfur powder 0.8; anti-scorch agent CTP0.1.

[0065] Embodiment 1 mixing process:

[0066] One stage rubber mixing process:

[0067] Carbon black masterbatch process: add 80 parts by mass of SMR20 to the F370 internal mixer with a rotating speed of 45 rpm for 60 seconds, lift up the top bolt, add 40 parts by mass of carbon black N115, lift up the top bolt for cleaning after 60 seconds of mixing , and then knead for 60 seconds to remove the glue; the pressurized mixing time is 180 seconds, and the glue removal temperature is 165°C;

[0068] White carbon black masterbatch process: Add 20 parts by mass of synthetic trans-isoprene TPI to the F370 internal mixer with a rotating speed of 45 rpm, lift the top bolt after mixing for 60 seconds, add 10 parts by mass of white carbon black...

Embodiment 2

[0082] Formula: SMR2060; IR25; TPI15; N234 carbon black 30; silica 20; silane coupling agent X50S5; zinc oxide 3.5; stearic acid 2; .7; sulfur 1.2.

[0083] Embodiment 2 mixing process:

[0084] One stage rubber mixing process:

[0085] Carbon black masterbatch process: add 60 parts by mass of SMR20 to the F370 internal mixer with a rotating speed of 45 rpm for 60 seconds, lift up the top bolt, add 30 parts by mass of carbon black N234, and lift up the top bolt for cleaning after 60 seconds of mixing , and then knead for 60 seconds to remove glue; the pressurized mixing time is 180 seconds, and the glue removal temperature is 160°C;

[0086] White carbon black masterbatch process: Add 15 parts by mass of synthetic trans-isoprene TPI and 25 parts of synthetic cis-polyisoprene IR into the F370 internal mixer with a rotating speed of 45 rpm, and lift it to the top after mixing for 60 seconds Add 20 parts by mass of white carbon black and 5 parts by mass of silane coupling agen...

Embodiment 3

[0102] Formula: SMR2070; IR15; TPI15N234 carbon black 35; silica 15; silane coupling agent X50S4; zinc oxide 3.5; stearic acid 2;; antioxidant RD1.5; antioxidant 40202; microcrystalline wax; accelerator CZ1. 8; sulfur 1.2.

[0103] One stage mixing process:

[0104] Carbon black masterbatch process: add 70 parts by mass of SMR20 to the F370 internal mixer with a rotating speed of 45 rpm for 60 seconds, lift up the top bolt, add 35 parts by mass of carbon black N234, lift up the top bolt for cleaning after 60 seconds of mixing , and then kneaded for 60 seconds to remove the glue; the pressurized mixing time was 180 seconds, and the glue removal temperature was 160°C.

[0105] White carbon black masterbatch process: Add 15 parts by mass of synthetic trans-isoprene TPI and 15 parts by mass of synthetic cis-isoprene IR into the F370 internal mixer with a rotating speed of 45 rpm, and lift it to the top after mixing for 60 seconds Add 15 parts by mass of white carbon black and 4 ...

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Abstract

The invention discloses a rubber composition and a processing technique thereof, wherein the rubber composition is prepared from two rubber mother batches, wherein one of the two rubber mother batches is prepared from synthetic trans-polyisoprene (TPI) (or a combination of the synthetic TPI and synthetic cis-polyisoprene (IR)) and white carbon black, and the other one is prepared from natural rubber and carbon black. The technique comprises the following steps: mixing TPI (or the combination of TPI and IR) and the white carbon black as well as a coupling agent into white carbon black rubber mother batch; mixing the natural rubber and the carbon black into carbon black rubber mother batch, and finally mixing the white carbon black rubber mother batch, the carbon black rubber mother batch and rubber auxiliaries into the rubber composition according to the proportion of the composition. The rubber prepared by using the rubber composition and the technology has the characteristic of improving the wear resistance and reducing thermogenesis, and can be applied to rubber products, especially to automobile tires, so as to reduce the rolling resistance and the thermogenesis.

Description

technical field [0001] The invention relates to the field of rubber, in particular to the field of rubber processing or tire manufacturing. Background technique [0002] The dynamic hysteresis loss performance of the rubber formula is particularly important to the tire performance. The hysteresis loss increases the energy consumption, heat generation, elasticity, and rolling resistance of the rubber during the dynamic deformation process. Heat generation will also reduce the strength and wear resistance of rubber, causing early damage to tires. Heat generation will also increase the rolling resistance of tires, increasing fuel consumption and carbon dioxide emissions. [0003] Research results at home and abroad show that the use of reinforcing precipitated silica fillers and coupling agents in the formula can reduce the rolling resistance of tires. However, the specific surface area of ​​reinforcing silica is large, the interaction between fillers is strong, it is not easy...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/00C08K13/02C08K3/36C08K3/04C08J3/22B60C1/00
CPCC08J3/22C08J2307/00C08J2309/00C08K3/36C08L7/00C08L9/00C08L2205/02C08L2205/025C08L2205/03Y02T10/86
Inventor 王梦蛟周宏斌石超
Owner EVE RUBBER RES INST
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