Unlock instant, AI-driven research and patent intelligence for your innovation.

A modified polyurethane

A polyurethane and modification technology, applied in the field of modified polyurethane, can solve the problems of reducing the properties of nanomaterials, poor coating storage, etc., and achieve long shelf life, good consistency of physical and chemical properties, and improved dispersion and storage stability. Effect

Active Publication Date: 2016-01-20
深圳市文浩科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the interaction between particles, the nano-powder is prone to soft agglomeration during the coating preparation process, which leads to poor storage of the coating and reduces the properties of nano-materials.

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 modified polyurethane

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] In a 250ml four-neck flask equipped with a thermometer, a reflux condenser, a stirring rod, and a dropping funnel, add a mixture of 50g γ-methacryloxypropyltrimethoxysilane, 1g concentrated hydrochloric acid, and 10g ethanol to deionize 20g A mixture of water and 10 g of ethanol was added dropwise to the above mixture, stirred and reacted at 45 degrees Celsius for 4 hours, and then deionized water and ethanol were removed under reduced pressure at 40 degrees Celsius to obtain the required bridging agent 1;

example 2

[0025] In a 250ml four-necked flask equipped with a thermometer, a reflux condenser, a stirring rod, and a dropping funnel, add a mixture of 50g of 3-aminopropyltriethoxysilane, 1g of concentrated hydrochloric acid, and 10g of ethanol. Mix 20g of deionized water, 10g of The ethanol mixture was added dropwise to the above mixture, stirred and reacted at 45 degrees Celsius for 4 hours, and then deionized water and ethanol were removed under reduced pressure at 40 degrees Celsius to obtain the required bridging agent 2;

example 3

[0027] In a 250ml four-necked flask equipped with a thermometer, a reflux condenser, a stirring rod, and a dropping funnel, add a mixture of 50g γ-glycidyl etheroxypropyltrimethoxysilane, 1g concentrated hydrochloric acid, and 10g ethanol, and mix 20g of deionized water 10g of ethanol mixture was added dropwise to the above mixture, stirred and reacted at 45 degrees Celsius for 4 hours, and then deionized water and ethanol were removed under reduced pressure at 40 degrees Celsius to obtain the required bridging agent 3;

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

A modified polyurethane is composed of bridging agent, diisocyanate, catalyst 1, diol and solvent, diisocyanate is added dropwise to the mixture composed of bridging agent, catalyst 1, diol and solvent, and the Under certain conditions, it is formed by stirring and reacting. The bridging agent is composed of coupling agent, deionized water, catalyst II, and ethanol. Through the coupling agent, organic functional group-modified organic silicon, organic zirconium, organic titanium and other chain segments are introduced, so that the corresponding increase in the number of nano-II The compatibility of nano-powders such as silicon oxide, nano-indium tin oxide, and nano-titanium dioxide, so the present invention can improve the dispersion and storage stability of these nano-powders in coatings, and overcome the previous nano-powders that rely solely on physical mixing. The resulting poor dispersion, prone to defects such as soft agglomeration. The invention can be widely applied to the production of nanometer powder coatings, and can make the coatings have good consistency in physical and chemical properties, stable storage and long shelf life.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a modified polyurethane. Background technique [0002] Due to the small size effect, surface effect, quantum size effect and macroscopic quantum tunneling effect of nanoparticles, the coatings prepared from them exhibit excellent characteristics that conventional coatings do not have in terms of magnetism, light, and electricity. However, due to the interaction between particles, the nano-powder is prone to soft agglomeration during the coating preparation process, which leads to poor storage of the coating and reduces the properties of the nano-material. Soft agglomeration is mainly caused by van der Waals force and Coulomb force between particles. The agglomeration needs to be eliminated by solvent dispersion or ultrasonic wave, grinding, etc., which requires the addition of dispersant, and the addition of dispersant is easy to affect the physical and chem...

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): C08G18/66C08G18/42C08G18/44C08G18/48C08G18/38C08G18/12C09D175/04C09D175/06C09D175/08
CPCC08G18/12C08G18/3893C08G18/3897C08G18/4238C08G18/4277C08G18/48C08G18/6633C08G18/6666C09D175/06C09D175/08
Inventor 凌金龙官树青
Owner 深圳市文浩科技有限公司