Block copolymer and block copolymer composition and vulcanized rubber and its application and preparation method of block copolymer
A technology of block copolymers and compositions, which is applied in the field of block copolymers, block copolymer compositions, vulcanized rubber and its application and the preparation of block copolymers. Low value and other problems, to achieve the effect of good mechanical properties and good damping performance
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Embodiment 1
[0103] In a 5-liter stainless steel stirred reactor, under the protection of high-purity nitrogen, 2288g of mixed solvent (mixture of cyclohexane and n-hexane: 82 / 18, mass ratio), 50g of styrene, 88.9g of isoprene, 88.9g butadiene, then add 2.79mmol tetrahydrofurfuryl ethyl ether and 0.19mmol sodium dodecylbenzenesulfonate, first use n-butyllithium initiator to kill impurities, then raise the temperature to 50°C, The addition of 1.86 mmol n-butyl lithium initiates the first stage of polymerization to form the first block (i.e., PSIB 1 part). After reacting for 20 minutes, 12.5 g of styrene was added into the reactor to carry out the second-stage polymerization reaction to form the second block (ie, PS block). During the reaction, the temperature was controlled at 75°C. After reacting for 20min, in the reactor, add 71.8g butadiene and carry out the third stage polymerization reaction to form the third block (that is, PB 2 Section), during the reaction, the temperature was con...
Embodiment 2
[0124] In a 5-liter stainless steel stirred reactor, under the protection of high-purity nitrogen, add 2288g mixed solvent (mixture of cyclohexane and n-hexane: 80 / 20, mass ratio), 62.4g styrene, 78g isoprene and 78g butadiene, then add 3.52mmol tetrahydrofurfuryl ethyl ether and 0.18mmol sodium dodecylbenzenesulfonate, first use n-butyllithium initiator to kill impurities, then raise the temperature to 50°C, add 1.76mmol n-butyllithium initiates the first stage of polymerization to form the first block (i.e., PSIB 1 part). After reacting for 20 minutes, 15.6 g of styrene was added into the reactor to carry out the second-stage polymerization reaction to form the second block (ie, PS block). During the reaction, the temperature was controlled at 75°C. After reacting 20min, in reactor, add 78g butadiene and carry out the third stage polymerization reaction and form the 3rd block (that is, PB 2 Section), during the reaction, the temperature was controlled to be 70°C. After re...
Embodiment 3
[0130] In a 5-liter stainless steel stirred reactor, under the protection of high-purity nitrogen, add 2288g of mixed solvent (mixture of cyclohexane and n-hexane: 90 / 10, mass ratio), 74.8g of styrene, 54.6g of isoprene And 54.6g butadiene, then add 4.48mmol tetrahydrofurfuryl ethyl ether and 0.36mmol sodium dodecylbenzenesulfonate, first use n-butyllithium initiator to kill impurities, and then raise the temperature to 55°C , adding 1.79mmol n-butyllithium to initiate the first stage of polymerization to form the first block (ie, PSIB 1 part). After reacting for 16 minutes, 18.7 g of styrene was added into the reactor to carry out the second-stage polymerization reaction to form the second block (ie, PS block). During the reaction, the temperature was controlled at 80°C. After reacting for 18min, add 109.2g butadiene in the reactor and carry out the third stage polymerization reaction to form the third block (that is, PB 2 Section), during the reaction, the temperature was ...
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