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Preparation method of modified polyurethane elastomer composite material

A polyurethane elastomer and composite material technology, applied in the field of polyurethane elastomer, can solve the problems of high temperature resistance, wear resistance and environmental aging resistance, high reaction conversion rate, etc., and achieve outstanding environmental aging resistance and high raw material conversion rate , cost-saving effect

Inactive Publication Date: 2018-08-10
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the use of toxic and volatile solvents and toxic raw materials in the polyurethane-type plastic runway in the prior art, such as diisocyanate (TDI), moca (MOCA), etc., there are also poor performance in high temperature resistance, wear resistance and environmental aging resistance. Problem, the purpose of this invention is to provide a method for one-step synthesis of modified polyurethane elastomer composite materials, the raw materials used in this method are environmentally friendly and pollution-free, the reaction conversion rate is high, and the introduction of silane-modified nano-silicon carbide greatly improves the modification The high temperature resistance, wear resistance and environmental aging resistance of polyurethane elastomer composite materials are suitable for a wide range of applications, especially for all-weather sports floors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The first step, the synthesis of a new silane coupling agent

[0041] Add the silane coupling agents KH-550 and KH-560 into a 250mL three-necked flask according to the molar ratio of 1:1, heat it at a constant temperature to 60°C, and let it react for 8 hours. The primary amino group of the newly synthesized silane coupling agent is converted into The addition of secondary amino groups with low activity is beneficial to control the degree of nano-SiC modification.

[0042] The second step, the modification of nano silicon carbide

[0043] Weigh 5±0.0001g of nano-SiC into a 250mL three-necked flask, add 150mL of toluene, after the surface of the nano-SiC powder is wet, stir for 0.5h, and heat to a constant temperature of 90°C. About 10 mL of the newly synthesized silane coupling agent was added dropwise, and the modified nano-SiC suspension was obtained after 10 h of reaction. The suspension was centrifuged in a centrifuge for 30 min, washed with toluene and centrifuge...

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Abstract

The invention discloses a preparation method of an environment-friendly modified polyurethane elastomer composite material. The method comprises the following steps of uniformly agitating polypropylene oxide dibasic alcohol and polypropylene oxide tribasic alcohol, then adding silane modified nano silicon carbide, ultrasonically dispersing, then firstly heating to 105 to 115 DEG C, carrying out vacuum treatment, then lowering a temperature to 80 to 90 DEG C, adding diisocyanate to carry out a polymerization reaction, and further lowering the temperature to 70 to 80 DEG C, adding an antifoamingagent and ethylene-propylene-diene monomer rubber, uniformly agitating, and then adding water as a chain extender, so that the modified polyurethane elastomer composite material which is excellent inhigh-temperature-resistant, wear-resistant and environmental aging-resistant performance. The environment-friendly modified polyurethane elastomer composite material is suitable to use in a large range, and is particularly suitable for an all-weather sports terrace; the method is low in requirement on a device; the process is simple; the reaction procedure is easy to control; the one-step synthesis is achieved, and the waste of a raw material, which is caused due to the failure of calculation, is avoided.

Description

technical field [0001] The invention relates to the preparation of a polyurethane elastomer composite material, in particular to a method for synthesizing a novel environmentally friendly modified polyurethane elastomer composite material with good high temperature resistance, wear resistance and environmental aging resistance through a one-step method, which belongs to polyurethane elastomer field. Background technique [0002] With the improvement of people's living standards in our country, the traditional polyurethane plastic runway has been unable to meet the application requirements due to its shortcomings such as easy wear and poor weather resistance. Therefore, the current technology of nano-modified polyurethane plastic runway is developing rapidly. The main component is polyurethane elastomer. The mechanical properties of polyurethane elastomer can be improved to a certain extent by introducing inorganic nanoparticles. Defects such as releasing substances harmful ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L23/16C08K9/06C08K3/34C08G18/76C08G18/66C08G18/48C08G18/12C08G18/30
CPCC08G18/12C08G18/4812C08G18/4825C08G18/4829C08G18/7671C08K2201/011C08L75/08C08L2201/08C08L23/16C08K9/06C08K3/34C08G18/2815
Inventor 周涛王梦迪
Owner CENT SOUTH UNIV
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