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Thermoplasticity soluble polymerized styrene-butadiene rubber polyurethane elastomer material and preparation method

A technology of solution-polymerizing styrene-butadiene rubber and polyurethane elastomer, which is applied in the field of polymer synthesis, can solve problems such as poor wet skid resistance, achieve low rolling resistance, and improve the effect of comprehensive performance

Active Publication Date: 2018-01-05
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, there are still technical problems to be solved in the production of polyurethane bicycle tires, such as poor wet skid resistance, etc.

Method used

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  • Thermoplasticity soluble polymerized styrene-butadiene rubber polyurethane elastomer material and preparation method
  • Thermoplasticity soluble polymerized styrene-butadiene rubber polyurethane elastomer material and preparation method
  • Thermoplasticity soluble polymerized styrene-butadiene rubber polyurethane elastomer material and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0052] 1) Preparation of naphthalene lithium initiator: prepared by referring to the literature "Research on Negative Dilithium Initiator System" (Han Bingyong et al., Synthetic Rubber Industry, 1999-01-15, 22(1): 5-8). The polymerization bottle is vacuumized, flame-baked and filled with argon for 3 times, then naphthalene, lithium, polar additives, and benzene are added, reacted at room temperature, and finally butadiene or isoprene is added, and naphthalene lithium short-term can be obtained after filtration. chain initiator. The initiator concentration was calibrated by double titration method, and the initiator concentration was 1mol / L.

[0053] 2) Distillation of ethylene oxide: Grind 100 g of calcium hydride into powder, add 1 L of ethylene oxide and soak for 24 hours, and distill the ethylene oxide at room temperature under nitrogen atmosphere.

[0054] 3) Preparation of hydroxyl-terminated solution-polymerized styrene-butadiene rubber: the temperature of the reaction ...

Embodiment 2

[0058] 1) Preparation of naphthalene lithium initiator: prepare with reference to the literature "Research on Anion Dilithium Initiator System" (Han Bingyong et al., Synthetic Rubber Industry, 1999-01-15, 22(1): 5-8), and the polymerization bottle was pumped Vacuum, flame baking and filling with argon are repeated 3 times, then add naphthalene, lithium, polar additives, benzene, react at room temperature, finally add butadiene or isoprene, and filter to get naphthalene lithium short chain initiator. The initiator concentration was calibrated by double titration method, and the initiator concentration was 1mol / L.

[0059] 2) Distillation of ethylene oxide: Grind 100 g of calcium hydride into powder, add 1 L of ethylene oxide and soak for 24 hours, and distill the ethylene oxide at room temperature under nitrogen atmosphere.

[0060] 3) Preparation of hydroxyl-terminated solution-polymerized styrene-butadiene rubber: the temperature of the reaction kettle was raised to 50° C., a...

Embodiment 3

[0064] 1) Preparation of naphthalene lithium initiator: prepare with reference to the literature "Research on Anion Dilithium Initiator System" (Han Bingyong et al., Synthetic Rubber Industry, 1999-01-15, 22(1): 5-8), and the polymerization bottle was pumped Vacuum, flame baking and filling with argon are repeated 3 times, then add naphthalene, lithium, polar additives, benzene, react at room temperature, finally add butadiene or isoprene, and filter to get naphthalene lithium short chain initiator. The initiator concentration was calibrated by double titration method, and the initiator concentration was 0.8mol / L.

[0065] 2) Distillation of ethylene oxide: Grind 100 g of calcium hydride into powder, add 1 L of ethylene oxide and soak for 24 hours, and distill the ethylene oxide at room temperature under nitrogen atmosphere.

[0066] 3) Preparation of hydroxyl-terminated solution-polymerized styrene-butadiene rubber: the temperature of the reaction kettle was raised to 45° C.,...

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Abstract

The invention discloses a thermoplasticity soluble polymerized styrene-butadiene rubber polyurethane elastomer material and a preparation method. The elastomer material is prepared by polymerization of the following substances: soft segment and hard segment, the mass ratio of the soft segment and the hard segment is 100: (20-90); the soft segment is hydroxyl-terminated solution polymerized styrene-butadiene rubber prepared by anionic polymerization; the hard segment includes isocyanate, and small molecular polyhydric alcohol chain extender; the mass ratio of the soft segment and the small molecular polyhydric alcohol chain extender is 100: (6-15); the mass ratio of the soft segment and isocyanate is 100: (20-70). The elastomer material introduces the hydroxyl-terminated solution polymerized styrene-butadiene rubber as the soft segment based on the synthesis of the traditional thermoplasticity soluable polyurethane elastomer, combines excellent flexural flexibility and excellent dynamicmechanical properties of the solution polymerized styrene-butadiene rubber on the basis of keeping the advantages of friendly environment, high wear resistance, oil resistance, chemical resistance and low rolling resistance of the polyurethane elastomer material, and adjusts the glass transition temperature of polyurethane elastomer; the polyurethane elastomer material is excellent in comprehensive use performance.

Description

technical field [0001] The invention relates to the technical field of polymer synthesis, and furthermore, relates to a thermoplastic solution-polymerized styrene-butadiene rubber-polyurethane elastomer material and a preparation method thereof. Background technique [0002] The tire industry is an industry with a long history and a modern civilization. Since the invention of the pneumatic tire in 1855, after several major technological and theoretical changes, the tire manufacturing technology has been perfected day by day, and its products are widely used in many fields such as transportation. The rapid development of the automobile industry and highways has made tires one of the polymer products with the largest output and the highest technical level. However, social development and environmental issues such as increasingly serious energy consumption, increase in safety accidents, and a large amount of tire solid waste due to short service life have put forward higher te...

Claims

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Application Information

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IPC IPC(8): C08G18/69C08G18/10C08G18/32C08G18/65C08F236/10C08F212/08C08F8/00
Inventor 张立群秦璇卢咏来程仕华毛立新韩丙勇
Owner BEIJING UNIV OF CHEM TECH
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