Check patentability & draft patents in minutes with Patsnap Eureka AI!

High-performance polyurethane composite material and its preparation method

A composite material and polyurethane technology, applied in the field of polyurethane materials, can solve problems such as inability to large-scale application and complex preparation process of organic montmorillonite, achieve the effect of good bridge function, improve mechanical and mechanical properties, and reduce the preparation process

Inactive Publication Date: 2011-12-14
ZHEJIANG XIPULI SEALING TECH
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned method for modifying polyurethane with lignin improves the performance of polyurethane, it still cannot make the polyurethane material obtain the characteristics of high strength and high heat resistance of inorganic materials.
Chinese patent 01109463.x adds layered silicate materials such as montmorillonite to polyurethane. Although a material with both mechanical and mechanical properties and thermal properties of organic and inorganic materials is obtained, the preparation process of organic montmorillonite is complicated, making it cannot be applied on a large scale

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
  • High-performance polyurethane composite material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] The preparation method of high-performance polyurethane composite material of the present invention is:

[0031] In the first step, add polyε-caprolactone polyol into the reaction kettle, and dehydrate it for 0.5~ 1 hour;

[0032] In the second step, add aromatic isocyanate, lignin products, rectorite, gamma-mercaptopropyltrimethoxysilane and react for 0.2-1 hour after cooling down to 45-90°C;

[0033] The preparation method of lignin products is as follows: at 50-80°C, add nitric acid dropwise to the lignin until the pH is 1-3, keep the temperature for 0.5-2 hours, cool, filter, dry naturally and then sieve, the mesh number of the sieve is 100 ~200 mesh, lignin products can be obtained after sieving;

[0034] The third step is to add 1,4-butanediol at 80-100°C, stir evenly, pour it into the mold, put it into a flat vulcanizing machine, vulcanize at 130-150°C for 0.2-0.5 hours, and put it in 80-100°C Vulcanize in an oven for 5 to 24 hours.

Embodiment 1

[0036] At 50°C, add nitric acid dropwise to the lignin until the pH is 1, keep the temperature at a constant temperature for 0.5 hours, cool, filter, dry naturally, and then sieve with a 100-mesh sieve to obtain the lignin product A.

Embodiment 2

[0038] At 65°C, add nitric acid dropwise to the lignin until the pH is 2, keep the temperature for 1 hour, cool, filter, dry naturally, and then sieve through a 150-mesh sieve to obtain the lignin product B.

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

No PUM Login to View More

Abstract

The invention discloses a high-performance polyurethane composite material, which comprises the following components in percentage by weight: 10 to 40 percent of aromatic isocyanate, 20 to 50 percent of poly epsilon-caprolactone polyhydric alcohol, 5 to 10 percent of 1,4-butanediol, 10 to 40 percent of lignin product, 2 to 7 percent of rectorite and 1 to 3 percent of gamma-mercapto propyl trimethoxysilane, wherein the aromatic isocyanate is one or more of diphenylmethane diisocyanate, naphthalene diisocyanate and p-phenylene diisocyanate. In the invention, the mechanical properties of the polyurethane material are improved, the bridge effect is better established between the polyurethane material and a lamellar silicate material, and the complex process for preparing the organic lamellar silicate material such as the organic rectorite is avoided; and the tightness and high-temperature resistant performance of the polyurethane material are improved substantially. The invention also discloses a preparation method for the high-performance polyurethane composite material.

Description

technical field [0001] The invention relates to a polyurethane material, in particular to a high-performance polyurethane composite material. The invention also relates to a preparation method of the high-performance polyurethane composite material. Background technique [0002] With the resource crisis and the increasing awareness of environmental protection, how to effectively and comprehensively utilize lignin, a natural and renewable waste resource, has been put into strategic consideration by many countries. Research and develop lignin and lignin compounds to make them useful industrial products, such as: rubber coupling agent, reinforcing agent, dye dispersant, drilling mud viscosity reducer, industrial waste gas desulfurizer, etc., no matter from From the perspective of protecting the environment, or the perspective of utilizing waste resources, it is a topic with good social significance and economic value. [0003] Industrial lignin is derived from papermaking was...

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 Applications(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/64C08K3/34C08K5/548C08L75/06
Inventor 奚为民候琳熙
Owner ZHEJIANG XIPULI SEALING TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com