Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of anti-wet skid low rolling resistance thermoplastic polyurethane elastomer and preparation method

A thermoplastic polyurethane and elastomer technology, which is applied in the field of preparation of polyurethane elastomer materials, can solve the problems of non-repeatable processing and the problem of tire devil triangle, and achieves reduced processing energy consumption, simple and easy preparation method, and excellent moisture resistance. slippery effect

Active Publication Date: 2022-04-22
BEIJING UNIV OF CHEM TECH
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN105237729A discloses that TODI has synthesized a corrosion-resistant polyurethane material. The obtained polyurethane is not a thermoplastic polyurethane material and cannot be repeatedly processed.
Chinese patent CN102181037A Shi Yalin and others disclose that TODI has synthesized a thermoplastic polyurethane with a hardness between Shore A86-96, but this thermoplastic polyurethane is used in tires and does not solve the tire's devil's triangle problem, that is, wear resistance, wet skid resistance and The balance between rolling resistance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of anti-wet skid low rolling resistance thermoplastic polyurethane elastomer and preparation method
  • A kind of anti-wet skid low rolling resistance thermoplastic polyurethane elastomer and preparation method
  • A kind of anti-wet skid low rolling resistance thermoplastic polyurethane elastomer and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This example provides a method for preparing a low-hardness TODI-based thermoplastic polyurethane elastomer, using polycaprolactone diol with Mn=1000 as the soft segment, and using dimethyl diphenyl diisocyanate (TODI) and 1,4-butyl Diol (BDO) is the hard segment, and the molar ratio of polycaprolactone diol: TODI and 1,4 butanediol is designed to be 1:1.7:0.7 (molar ratio), and TODI-based thermoplastic polyurethane is prepared by prepolymer method Elastomer:

[0044] (1) Remove water from 132g of polycaprolactone diol (Mn=1000) at -0.097MPa, 100°C with 90r / min mechanical stirring for 1.0h, this step removes the moisture in the raw material;

[0045] (2) After cooling the system to 60°C, add 59.57g of dimethyl biphenyl diisocyanate and 0.01g of dibutyltin dilaurate as a catalyst, and react for 2 hours after the system is heated up to 60°C to obtain isocyanate-terminated TODI-based polyurethane prepolymerization body;

[0046] (3) Under mechanical stirring at 400r / min,...

Embodiment 2

[0048] This example provides a preparation method of a high-hardness TODI-based thermoplastic polyurethane elastomer, using polycaprolactone diol with Mn=1000 as the soft segment, and dimethyl diphenyl diisocyanate (TODI) and BDO as the hard segment , design polycaprolactone diol: TODI:BDO=1:2.5:1.5 (molar ratio), prepared TODI base thermoplastic polyurethane elastomer by prepolymer method:

[0049] (1) Take 111.2g of polycaprolactone diol with Mn=1000 as the soft segment (Mn=1000) to remove water for 1.5h under the condition of -0.097MPa, 110°C and 110r / min mechanical stirring, and remove the raw materials in this step moisture in

[0050] (2) Add 73.68g of dimethyl biphenyl diisocyanate and 0.02g of dibutyltin diacetate as a catalyst after the system cools down to 80°C, and react for 3 hours after the system is heated up to 80°C to obtain isocyanate-terminated TODI-based polyurethane prepolymer ;

[0051] (3) Add BDO 15.11g, 2-(2'-hydroxy-5'-(2,4-tert-butyl)phenyl)benzotri...

Embodiment 3

[0053] With the polycaprolactone diol of Mn=1000 as soft segment, with dimethyl diphenyl diisocyanate (TODI) and BDO as hard segment, design polycaprolactone diol: TODI:BDO=1:3.5:2.5( mol ratio), prepared TODI-based thermoplastic polyurethane elastomer by prepolymer method:

[0054] (1) Use 93g of polycaprolactone diol as a soft segment (Mn=1000) to remove water for 2.5h under the conditions of -0.095MPa, 120°C and 120r / min mechanical stirring, this step removes the moisture in the raw material;

[0055] (2) After cooling the system to 90°C, add 86.03g of dimethyl biphenyl diisocyanate and 0.03g of zinc isooctanoate as a catalyst, and react for 3 hours after the system is heated up and stabilized to 90°C. In this step, an isocyanate-terminated TODI-based polyurethane prepolymer is obtained;

[0056] (3) Add BDO 20.96g, 2-(2'-hydroxy-5'-(2,4-tert-butyl)phenyl)benzotriazole (UV320) 1g, tetrakis[ β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester (antioxidan...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
glass transition temperatureaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention provides a kind of anti-wet skid low rolling resistance thermoplastic polyurethane elastomer, which uses the chain segment containing macromolecular diol as soft segment to contain dimethyl biphenyl diisocyanate and small molecule diol and / or small molecule The chain segment of the diamine is a hard segment, and a series of thermoplastic polyurethane elastomers with different molecular weights are prepared by prepolymerization. The thermoplastic polyurethane elastomers have excellent wet skid resistance, low rolling resistance, low heat generation, etc. Solve the devil's triangle problem in the tire industry; and can be directly processed into products, reducing processing energy consumption, while leftovers and waste can be recycled, which is an important way to solve the high energy consumption, high material consumption, and high pollution of traditional rubber.

Description

technical field [0001] The invention relates to the field of preparation of polyurethane elastomer materials, in particular to an anti-wet skid and low rolling resistance thermoplastic polyurethane elastomer and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer is a block copolymer composed of isocyanate, macromolecular polyol and small molecular polyol chain extender as the main components. There are two major problems in the traditional rubber processing industry: high energy consumption and difficulty in recycling, while thermoplastic elastomers have the elasticity of rubber when used, and can be processed directly into products using thermoplastics, without the need for mixing and vulcanization like rubber. The consumption is significantly reduced, and the leftovers and waste can be recycled, which is an important way to solve the high energy consumption, high material consumption and high pollution of traditional rubber. M...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/42C08G18/32C08K5/134C08K5/3475
CPCC08G18/7685C08G18/664C08G18/4277C08G18/3206C08K5/134C08K5/3475
Inventor 张立群胡仕凯寿韬赵秀英
Owner BEIJING UNIV OF CHEM TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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