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Star-shaped block copolymer based on DPE derivative, butadiene, isoprene and styrene monomer and preparation method of star-shaped block copolymer

A technology of block copolymer and isoprene, which is applied in the field of star-shaped block copolymer and its preparation, can solve the problems of poor wear resistance and low strength, and achieve better results

Active Publication Date: 2022-01-11
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of low strength and poor wear resistance of rubber in the prior art, the present invention provides a class of rubber based on DPE derivatives, butadiene, isoprene Star-shaped block copolymer of alkene and styrene monomer and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] [(SN-SIBR)-BR]n-C star-shaped block copolymer: In a 5-liter stainless steel reactor with stirring, add 3.5 liters of benzene and 140 grams of butadiene, raise the temperature to 50 ° C, add multifunctional lithium to initiate When the polymerization reaction is carried out to 30 minutes, the butadiene polymerization reaction is completely completed; then add 78.5 grams of butadiene, 78.5 grams of isoprene, 52.5 grams of styrene, 4.5 grams of 1,1- Bis[4-(dimethylsilyl)phenyl]ethylene (DPE-2SiH), THF / Li (molar ratio) is 35, continue to react for 60 minutes, when 1,1-bis[4-(dimethylsilyl Base) phenyl] ethylene, butadiene, isoprene, styrene polymerization reaction is all completed, add a terminator to end the reaction. [(SN-SIBR)-BR]n-C radial block copolymer: B1 is the first batch of butadiene (for the preparation of BR block); B2 is the second batch of butadiene [for the preparation of (SN-SIBR ) block], isoprene, styrene, 1,1-bis[4-(dimethylsilyl)phenyl]ethylene, 1,1-bi...

Embodiment 2

[0044][(SN-SIBR)-BR]n-C star-shaped block copolymer: In a 5-liter stainless steel reactor with stirring, add 3.5 liters of benzene and 140 grams of butadiene, raise the temperature to 50 ° C, add multifunctional lithium to initiate When the polymerization reaction is carried out to 30 minutes, the butadiene polymerization reaction is completely completed; then add 78.5 grams of butadiene, 78.5 grams of isoprene, 52.5 grams of styrene, 4.5 grams of 1,1- Bis[4-(dimethylsilyl)phenyl]ethylene (DPE-2SiH), THF / Li (molar ratio) is 35, continue to react for 60 minutes, when 1,1-bis[4-(dimethylsilyl Base) phenyl] ethylene, butadiene, isoprene, styrene polymerization reaction is all completed, add a terminator to end the reaction. [(SN-SIBR)-BR]n-C radial block copolymer: B1 is the first batch of butadiene (for the preparation of BR block); B2 is the second batch of butadiene [for the preparation of (SN-SIBR ) block], isoprene, styrene, 1,1-bis[4-(dimethylsilyl)phenyl]ethylene, 1,1-bis...

Embodiment 3

[0046] [(SN-SIBR)-BR]n-C star-shaped block copolymer: In a 5-liter stainless steel reactor with stirring, add 3.5 liters of benzene and 140 grams of butadiene, raise the temperature to 50 ° C, add multifunctional lithium to initiate agent, when the polymerization reaction was carried out to 30 minutes, the butadiene polymerization reaction was all completed; then add 78.5 gram butadiene, 78.5 gram isoprene, 52.5 gram styrene, 4.4 gram 1[4- (Dimethylsilyl) phenyl]-1-phenylethylene (DPE-SiH), THF / Li (molar ratio) is 35, continue to react for 60 minutes, when 1 [4- (dimethylsilyl) benzene After the polymerization reactions of -1-phenylethylene, butadiene, isoprene and styrene are all completed, a terminator is added to terminate the reaction. [(SN-SIBR)-BR]n-C radial block copolymer: B1 is the first batch of butadiene (for the preparation of BR block); B2 is the second batch of butadiene [for the preparation of (SN-SIBR ) block], isoprene, styrene, 1[4-(dimethylsilyl)phenyl]-1-p...

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Abstract

The invention belongs to the technical field of functional polymer materials, and aims to solve the problems of insufficient performance, complex process and the like in rubber modification in the prior art. The invention provides a star-shaped block copolymer based on a DPE derivative, butadiene and a styrene monomer and a preparation method. The structure of the copolymer is [(SN-SIBR)-BR]n-C, wherein the (SN-SIBR) is a copolymer block of a DPE derivative, butadiene, isoprene and styrene, BR is a butadiene homopolymer block, C is a polyfunctionality alkyl lithium initiator residue, and n is greater than or equal to 3; the number average molecular weight of the copolymer is 5 * 10<4> to 50 * 10<4>; the content of butadiene is 5-80%, the content of isoprene is 5-80%, the content of styrene is 5-50%, and the content of the DPE derivative is 0.5-20% in terms of 100% by mass of (SN-SIBR), wherein the ratio of the (SN-SIBR) block to the BR block is 10 / 90 to 90 / 10.

Description

technical field [0001] The invention belongs to the technical field of polymer material synthesis and preparation, and in particular relates to a star-shaped block copolymer based on DPE derivatives, butadiene, isoprene and styrene monomers and a preparation method. Background technique [0002] Styrene-isoprene-butadiene rubber (SIBR) is an ideal integrated rubber with better comprehensive performance. It has a good balance between rolling resistance and traction performance. It is a promising new type of tread rubber. my country is rich in C5 resources, but the problem of its comprehensive utilization has not been completely resolved. As an important component of C5, isoprene (I) has a large potential yield. Therefore, solving the problem of comprehensive utilization of isoprene (I) is a very realistic subject in the field of synthetic materials. Furthermore, due to the very limited natural rubber resources in my country, it is difficult to meet domestic demand, and isop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F297/04C08F4/48
CPCC08F297/048C08F297/046C08F297/042C08F4/488Y02T10/86
Inventor 李杨冷雪菲王艳色韩丽
Owner DALIAN UNIV OF TECH
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