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
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
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...
PUM
Property | Measurement | Unit |
---|---|---|
thermal resistance | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com