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

A kind of organosilicon modified self-cleaning polyurethane oil paint and preparation method thereof

An oil-based coating, silicon modification technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of harsh conditions, inability to achieve super-hydrophobicity, practical limitations, etc.

Active Publication Date: 2020-10-20
NANJING FORESTRY UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most superhydrophobic coatings use high-priced fluorine-containing low-surface-energy materials, and the conditions are relatively harsh, so the practicability is greatly limited.
Without the help of fluorine-containing materials, existing conventional polyethers cannot achieve superhydrophobicity

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 organosilicon modified self-cleaning polyurethane oil paint and preparation method thereof
  • A kind of organosilicon modified self-cleaning polyurethane oil paint and preparation method thereof
  • A kind of organosilicon modified self-cleaning polyurethane oil paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation method of the silicone-modified self-cleaning polyurethane oily coating of the present embodiment may further comprise the steps:

[0022] Step 1. Addition reaction of allyl glycidyl ether and heptamethyltrisiloxane (molar ratio: 1:1), using chloroplatinic acid as a catalyst, and reacting for 6 hours at a reaction temperature of 80°C under nitrogen protection , to obtain modified allyl glycidyl ether. Chloroplatinic acid is added in the form of a solution, the solvent is toluene, the concentration of chloroplatinic acid in the solution is 20ppm, and the amount of chloroplatinic acid solution added is 50% of the total mass of the material, while the reaction is condensed and refluxed, after the reaction is finished, the distillation Remove solvent.

[0023] Step 2, add propylene oxide and diethylene glycol to the modified allyl glycidyl ether obtained in step 1, the molar ratio of allyl glycidyl ether to polyol is 2:1, and carry out polymerization in the...

Embodiment 2

[0031] The preparation method of the silicone-modified self-cleaning polyurethane oily coating of the present embodiment may further comprise the steps:

[0032] Step 1, polymerize 1mol allyl glycidyl ether, 11mol propylene oxide and 1mol ethylene glycol, the reaction conditions are potassium hydroxide catalysis (addition amount is 0.1% of the total mass of the material), nitrogen protection, 100 ° C reaction 6h to obtain polyether diol.

[0033] In step 2, add 1 mol of heptamethyltrisiloxane to the polyether diol obtained in step 1. The reaction conditions are catalyzed by chloroplatinic acid, protected by nitrogen, and reacted at 90°C for 5 hours. The chloroplatinic acid is in the form of a solution Add, solvent is xylene, and the concentration of chloroplatinic acid in solution is 50ppm, and the addition of chloroplatinic acid solution is 30% of material gross mass, carries out condensing reflux while reacting, after reaction finishes, distillation removes solvent, obtains ...

Embodiment 3

[0038] The preparation method of the silicone-modified self-cleaning polyurethane oily coating of the present embodiment may further comprise the steps:

[0039] Step 1. Addition reaction of allyl glycidyl ether and heptamethyltrisiloxane (molar ratio: 0.8:1), using chloroplatinic acid as a catalyst, and reacting for 7 hours at a reaction temperature of 60°C under nitrogen protection , to obtain modified allyl glycidyl ether. Chloroplatinic acid is added in the form of a solution, the solvent is isopropanol, the concentration of chloroplatinic acid in the solution is 3ppm, and the amount of chloroplatinic acid solution added is 90% of the total mass of the material, while the reaction is condensed and refluxed, the reaction ends The solvent was then distilled off.

[0040] Step 2, adding propylene oxide and dipropylene glycol to the modified allyl glycidyl ether obtained in step 1, the molar ratio of allyl glycidyl ether to polyol is 1:1, and the polymerization reaction is ca...

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
adhesivityaaaaaaaaaa
adhesivityaaaaaaaaaa
adhesivityaaaaaaaaaa
Login to View More

Abstract

The invention discloses organosilicon modified self-cleaning polyurethane oil paint as well as a preparation method thereof, belonging to the technical field of polyurethane coatings. The self-cleaning polyurethane oil paint is obtained by enabling modified polyether polyol to react with isocyanate, wherein the modified polyether polyol is an organosiloxane-branched polyether polyol, an initiatorof the polyether polyol is prepared from allyl glycidyl ether, and organosiloxane is in chain segment connection with the allyl glycidyl ether. In the organosilicon modified self-cleaning polyurethaneoil paint provided by the invention, the organosiloxane is introduced into a polyether glycol structure in a way of double-bond addition, so that the surface of a coating has a self-cleaning property; furthermore, the obtained coating is good in stability and strong in adhesion.

Description

technical field [0001] The invention belongs to the technical field of polyurethane coatings, and more specifically relates to an organosilicon-modified self-cleaning polyurethane oily coating and a preparation method thereof. Background technique [0002] The superhydrophobic coating is completed by the synergy between the chemical composition of the coating surface and the surface structure. The surface can be constructed with low surface energy polytetrafluoroethylene, siloxane, etc., or introduce an air pillow-like structure with high surface roughness. , to increase its specific surface area, it adsorbs a layer of air film on the rough surface to achieve the purpose of hydrophobicity. According to the binary synergy theory, sol-gel method, vapor deposition method, template method, electrochemical method, ion sputtering method can be used to construct rough surface structure, and then low surface energy substances can be grafted to prepare superhydrophobic coating. At p...

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): C09D175/08C08G18/50
CPCC08G18/5096C09D175/08
Inventor 罗振扬陈军李本刚何明王磊
Owner NANJING FORESTRY UNIV
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