Hydrogenated pentablock styrene thermoplastic elastomer and preparation method thereof

A thermoplastic elastomer and styrene technology, which is applied in the field of hydrogenated pentablock styrene thermoplastic elastomer and its preparation, can solve the problems of poor fluidity and large permanent deformation, and achieves simple operation, reduced micro-domain deformation, The effect of improving fluidity and permanent deformation

Inactive Publication Date: 2019-06-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polymers in the prior art mainly improve the processing performance or permanent deformation of hydrogenated styrene-based thermoplastic elastomers by changing the polymer monomer, mixing styrene in two stages, and "capping" technology, but they cannot At the same time, the defects of poor fluidity and large permanent deformation of hydrogenated styrene thermoplastic elastomers are improved

Method used

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  • Hydrogenated pentablock styrene thermoplastic elastomer and preparation method thereof
  • Hydrogenated pentablock styrene thermoplastic elastomer and preparation method thereof
  • Hydrogenated pentablock styrene thermoplastic elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Add 2400g of cyclohexane, 30g of styrene, and 0.1g of activator into the polymerization kettle, add 1.4mmol of n-butyllithium at 50-60°C, and react for 30 minutes. After the monomer reaction is complete, add 105g of butadiene, Control the reaction temperature below 110°C and react for 30 minutes. After the monomer reaction is complete, add 30g of styrene and react for 30 minutes. After the monomer reaction is complete, add 105g of butadiene, control the reaction temperature below 110°C, and react After 30 minutes, after the monomer reaction is complete, add 30 g of styrene, react for 30 minutes, take samples to measure molecular weight and molecular weight distribution.

[0045] The glue solution prepared above was treated with N 2 Press into the hydrogenation tank, start stirring for hydrogenation, and pass in H 2 Carry out the termination reaction for 8-10 minutes, raise the temperature to 65-70° C., add 0.6 mmol of titanocene dichloride catalyst, control the hydroge...

Embodiment 2

[0049] Add 2400g of cyclohexane, 30g of styrene, and 0.1g of activator into the polymerization kettle, add 1.67mmol of n-butyllithium at 50-60°C, and react for 30 minutes. After the monomer reaction is complete, add 105g of butadiene, Control the reaction temperature below 110°C and react for 30 minutes. After the monomer reaction is complete, add 30g of styrene and react for 30 minutes. After the monomer reaction is complete, add 105g of butadiene, control the reaction temperature below 110°C, and react After 30 minutes, after the monomer reaction is complete, add 30 g of styrene and react for 30 minutes. After the monomer reaction is complete, take a sample to measure the molecular weight and molecular weight distribution.

[0050] The glue solution prepared above was treated with N 2 Press into the hydrogenation tank, start stirring for hydrogenation, and pass in H 2 Carry out termination reaction for 8-10min. Raise the temperature to 65-70°C, add 0.6 mmol titanocene dich...

Embodiment 3

[0054] Add 2400g of cyclohexane, 30g of styrene, and 0.1g of activator into the polymerization kettle, add 2.14mmol of n-butyllithium at 50-60°C, and react for 30 minutes. After the monomer reaction is complete, add 105g of butadiene, Control the reaction temperature below 110°C and react for 30 minutes. After the monomer reaction is complete, add 30g of styrene and react for 30min. Minutes, after the monomer reaction is complete, add 30g of styrene, react for 30 minutes, take a sample to measure the molecular weight and molecular weight distribution.

[0055] The glue solution prepared above was treated with N 2 Press into the hydrogenation tank, start stirring for hydrogenation, and pass in H 2 Carry out the termination reaction for 8-10 minutes, raise the temperature to 65-70° C., add 0.6 mmol of titanocene dichloride catalyst, control the hydrogen pressure at 1.0-1.8 MPa, react for 2 hours, and discharge. The solvent was removed from the glue, and samples were taken for ...

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Abstract

The invention discloses a hydrogenated pentablock styrene thermoplastic elastomer and a preparation method thereof. The hydrogenated pentablock styrene thermoplastic elastomer is prepared by hydrogenation of a styrene-b-butadiene-b-styrene-b-butadiene-b-styrene pentablock copolymer. The preparation method includes: conducting segmented polymerization by anionic polymerization process to obtain a styrene-b-butadiene-b-styrene-b-butadiene-b-styrene pentablock copolymer sol, and then performing hydrogenation. The hydrogenated pentablock styrene thermoplastic elastomer provided by the invention has high fluidity and small permanent deformation, and at the same time has good mechanical properties.

Description

technical field [0001] The invention relates to a styrene-based thermoplastic elastomer, in particular to a hydrogenated penta-block styrene-based thermoplastic elastomer with high fluidity and small permanent deformation and a preparation method thereof, which belongs to the technology of styrene-based thermoplastic elastomers field. Background technique [0002] Thermoplastic Elastomer (TPE, Thermoplastic Elastomer), also known as Thermoplastic Rubber (TPE, Thermoplastic Rubber), is a new type of elastomer. It mainly includes polyolefin thermoplastic elastomer (including TPO and TPV), styrene thermoplastic elastomer (TPS), polyurethane thermoplastic elastomer (TPU), etc. Styrenic thermoplastic elastomer is the earliest thermoplastic elastomer studied, and it is also the thermoplastic elastomer with the largest output, fastest development and widest application in the world. It mainly includes SBS, hydrogenated SBS (SEBS), SIS, and hydrogenated SIS (SEPS). [0003] Tradi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F293/00C08F236/06C08F212/08C08F8/04
Inventor 梁红文严绍敏莫笑君
Owner CHINA PETROLEUM & CHEM CORP
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