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Properties of blends of Sn-couple SSBR with different microstructures


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Properties of blends of Sn-couple SSBR with different microstructures
Jia Hongbing1Wang Jingyi1Zhu Shenggao2Xu Jinlou1
1.Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, NUST,Nanjing 210094,China; 2.National Research Center of Testing Techniques for Building Materials,Beijing 100024
Sn-coupled solution styrene-butadiene rubber blends compatibility dynamic mechanical properties physical mechanical properties
The high 1,2-vinyl content Sn-coupled solution styrene-butadiene rubber(HVSSBR)and middle 1,2-vinyl content Sn-coupled solution styrene-butadiene rubber(MVSSBR)are blended to improve the comprehensive properties of vulcanizates.The compatibility,dynamic mechanical properties and mechanical properties of blended rubbers are studied by using differential scanning calorimetry(DSC)analysis,dynamic mechanical analysis(DMA)and tensile tests.The results show that the HVSSBR and MVSSBR could be compatible at any ratio with only one glass transition temperature in DSC of compounds and in DMA of corresponding vulcanizates.With the increase of HVSSBR,the fatigue resistance and abrasion resistance of the blended vulcanizates decrease,while the wet skid resistance increases apparently and the rolling resistance almost has no change.The blended vulcanizates exhibite optimal integrative properties when the HVSSBR content is about 20%.


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Last Update: 1900-01-01