Butadiene rubber-polyurethane elastomer material with ultra-low rolling resistance and preparation method thereof

A polyurethane elastomer and rolling resistance technology, applied in the field of polymer synthesis, can solve the problems of rolling resistance that cannot meet the application requirements of high-load vehicles, poor high temperature resistance, etc., and achieve excellent dynamic mechanical properties, good synergy, and reduced rolling resistance. Effect

Active Publication Date: 2019-11-19
BEIJING UNIV OF CHEM TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technical problems that still need to be solved in the production of polyurethane tires are mainly poor high temperature resistance and rolling resistance that cannot meet the application requirements of high-load vehicles.

Method used

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  • Butadiene rubber-polyurethane elastomer material with ultra-low rolling resistance and preparation method thereof
  • Butadiene rubber-polyurethane elastomer material with ultra-low rolling resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1) Preparation of prepolymer: take 1 kg of hydroxyl-terminated polybutadiene rubber (molecular weight 1000) and stir it under vacuum conditions at 75 °C (stirring rate 150 rad / min) for 2.5 h, cool down to 65 °C, add 0.86 kg 4, 4-Diphenylmethane diisocyanate (MDI), react for 3h, cool down to 60°C, take a sample, detect the mass content of -NCO according to the standard ASTM D2572-97, when the mass content of -NCO reaches 11%, discharge and seal save.

[0039] 2) Preparation of butadiene rubber-polyurethane elastomer: Take 1.86kg of prepolymer and stir (stirring rate 150rad / min) for 2h under vacuum at 70°C, cool down to 60°C, add 0.18kg of propylene glycol and 0.03kg of trihydroxy Methylpropane (TMP), high-speed stirring (stirring rate 500rad / min) for 10 minutes, pouring molding, put in a 100°C oven for curing for 20 hours, after demoulding, place at room temperature for 7 days.

[0040] 3) Irradiation modification: using 60 The Coγ-ray source irradiates the butadiene r...

Embodiment 2

[0042] 1) Preparation of prepolymer: Take 1 kg of hydroxyl-terminated polybutadiene rubber (molecular weight 8000) at 95 ° C and stir under vacuum conditions (stirring rate 200 rad / min) for 2.5 h, cool down to 80 ° C, add 0.21 kg p-benzene Diisocyanate (PPDI), react for 3 hours, cool down to 75°C, take samples, detect the mass content of -NCO according to the standard ASTM D2572-97, when the mass content of -NCO reaches 5%, discharge the material and seal it for storage.

[0043]2) Preparation of butadiene rubber-polyurethane elastomer: Take 1.21kg of prepolymer and stir at 90°C under vacuum conditions (stirring rate 200rad / min) for 2h, cool down to 75°C, add 0.03kg of 1,4-butane Alcohol (BDO) and 0.03kg trimethylolpropane (TMP), high-speed stirring (stirring rate 800rad / min) for 12min, pouring molding, put into 120°C oven for curing for 22h, after demoulding, place at room temperature for 7d.

[0044] 3) Irradiation modification: The butadiene rubber-polyurethane elastomer is...

Embodiment 3

[0046] 1) Preparation of prepolymer: take 1 kg of hydroxyl-terminated polybutadiene rubber (molecular weight 4500) and stir it under vacuum at 85 °C (stirring rate 250 rad / min) for 3 hours, cool down to 70 °C, add 0.33 kg of 4,4 -Diphenylmethane diisocyanate (MDI), react for 3h, cool down to 65°C, take a sample, detect the mass content of -NCO according to the standard ASTM D2572-97, when the mass content of -NCO reaches 7%, discharge, sealed and preserved .

[0047] 2) Preparation of butadiene rubber-polyurethane elastomer: Take 1.33kg of prepolymer and stir at 90°C under vacuum conditions (stirring rate 250rad / min) for 2h, cool down to 65°C, add 0.08kg of 1,4-butane Alcohol (BDO) and 0.01kg trimethylolpropane (TMP), stirred at high speed (stirring rate 600rad / min) for 6 minutes, poured and molded, put in an oven at 120°C to cure for 24 hours, after demoulding, placed at room temperature for 7 days.

[0048] 3) Irradiation modification: using 60 The Coγ-ray source irradiate...

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Abstract

The invention discloses a butadiene rubber-polyurethane elastomer material with ultra-low rolling resistance and a preparation method thereof. The elastomer material is obtained by polymerizing and irradiating a soft segment and a hard segment with a mass ratio of 100:(20-110). The soft segment is hydroxy terminated polybutadiene rubber. The hard segment comprises isocyanate, a micromolecular polyol chain extender and a crosslinking agent. On the basis of keeping high strength, high toughness, environmental protection, high wear resistance, oil resistance, chemical resistance, excellent flex resistance and excellent dynamic mechanical properties of a conventional polyurethane elastomer material, the irradiation-modified butadiene rubber-polyurethane elastomer material prepared by the preparation method of the invention has better coordination among macromolecules, is further reduced in rolling resistance, and provides a new idea for the preparation of a next generation of fuel-saving tires with ultra-low rolling resistance.

Description

technical field [0001] The present invention relates to the technical field of polymer synthesis, and furthermore, relates to a butadiene rubber-polyurethane elastomer material with ultra-low rolling resistance and a preparation method thereof. Background technique [0002] The wheel is one of the greatest inventions in the history of human civilization, which greatly improves work efficiency and liberates productivity. Today, tire manufacturing technology has undergone several major technological and theoretical changes, and 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. In the past five years, the energy consumption directly or indirectly generated by tires has accounted for more than 6% of the world's total energy consumption, and about 5% of global CO2 emissions are related to tires. Social development and environmental pollution problems such as increasing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/69C08G18/10C08G18/32C08J3/28
CPCC08G18/10C08G18/69C08J3/28C08J2375/14C08G18/3206C08C19/22C08F8/30C08F236/06C08G18/32C08G18/65
Inventor 张立群秦璇王嘉栋韩丙勇毛立新吴晓辉刘军张宁董栋张成
Owner BEIJING UNIV OF CHEM TECH
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