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

A kind of polyurethane based on polyetherester polyol and its preparation method and application

A technology of polyether ester polyol and polyurethane, which is applied in polyurea/polyurethane coatings, biocide-containing paints, coatings, etc., can solve the problem of short antifouling period, failure to achieve antifouling effect, and antifouling of marine equipment Poor protection effect and other problems, to achieve the effect of good mechanical properties

Active Publication Date: 2022-01-25
JIAXING UNIV
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The elastic marine antifouling coating used in existing marine equipment is composed of non-degradable elastic resin and antifouling agent. Since the elastic resin is not degradable, the concentration of antifouling agent released in the later stage of the elastic marine antifouling coating is low, which cannot achieve antifouling. Effect, the antifouling performance of the elastic marine antifouling coating is poor, the antifouling period is short, and the antifouling protection effect on marine equipment is poor

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 polyurethane based on polyetherester polyol and its preparation method and application
  • A kind of polyurethane based on polyetherester polyol and its preparation method and application
  • A kind of polyurethane based on polyetherester polyol and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] figure 1 It is the method flowchart of the preparation method of the polyurethane based on polyether ester polyol shown according to an exemplary embodiment, as figure 1 Shown, the preparation method of the polyurethane based on polyether ester polyol comprises:

[0033] Step (1): Dissolve 10-20 parts of polyethylene glycol PEG and 20-50 parts of polyether diol in the first solvent to obtain a reaction solution, and then raise the temperature of the reaction solution to 110°C~120°C , use the condensing reflux method to remove water and then keep it warm for 1~2h.

[0034] The average molecular weight of the polyethylene glycol PEG is 100-500, and the first solvent includes at least one of xylene or toluene.

[0035] In the present invention, polyethylene glycol PEG and polyether diol are used as initiators.

[0036] In a preferred embodiment, the polyether diol includes at least one of polytetrahydrofuran ether polyol PTMG or polypropylene oxide polyol PPG.

[0037]...

Embodiment 1

[0059] (1) Put 20 PEG 400 with 30 PPG 1000 Dissolved together in xylene to obtain a reaction solution, then the reaction solution was heated up to 110 ° C, and the water was removed by condensation and reflux, and then kept for 1 h.

[0060] (2) Add stannous octoate to the reaction solution, then raise the temperature of the reaction solution to 120°C, slowly add 20 parts of glycolide and 25 parts of lactide dropwise to the reaction solution within 3 hours, and the dropwise addition is completed Then react at a reaction temperature of 120° C. for 2 h to prepare polyether ester polyol.

[0061] (3) Cool the reaction solution to 60°C, add 13 parts of HDI and 0.2 parts of dibutyltin dilaurate respectively and react at a reaction temperature of 80°C for 2 h, then cool the reaction solution to 20 °C and add DMF and 4.8 parts of ethylenediamine respectively, finally the reaction solution is warmed up to 65 °C to continue the reaction, when the isocyanate percentage content value o...

Embodiment 2

[0066] (1) Mix 10 parts of polyethylene glycol PEG 200 with 30 copies of PTMG 2000 Dissolved together in xylene to obtain a reaction solution, and then the reaction solution was heated to 115 ° C, and the water was removed by condensation and reflux, and then kept for 1.5 hours.

[0067] (2) Add zinc oxide to the reaction solution, then raise the temperature of the reaction solution to 125°C, slowly add 15 parts of caprolactone and 10 parts of valerolactone dropwise to the reaction solution within 4 hours, after the addition is completed, React 3h under the reaction temperature of 125 ℃, prepare polyether ester polyol.

[0068] (3) Cool down the reaction solution to 60°C, add 22 parts of TDI and 0.2 part of bismuth laurate respectively and react at a reaction temperature of 60°C for 3 h, then cool down the reaction solution to 50°C And add DMSO and 5.8 parts of butanediol respectively, finally described reaction solution is warming up to 85 DEG C and continues to react, stop...

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
tensile strengthaaaaaaaaaa
elongation at breakaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method and application of polyurethane based on polyether ester polyol, and relates to the technical field of marine antifouling materials. Through the design of the process flow, the present invention uses polyethylene glycol PEG and polyether diol as initiators to open the ring-opening compound containing ester bonds to synthesize polyether ester polyol, and then react polyether ester polyol with diisocyanate, Form a chain segment whose terminal group is isocyanate, and finally pass a chain extender to prepare a one-component elastic and degradable polyurethane based on polyether ester polyol, thereby introducing polyether ester segment and polyethylene glycol chain into the polyurethane soft segment By controlling the hydrophilicity and segment structure of polyurethane, the degradation rate of polyurethane can be adjusted, so that polyurethane has both hydrophilicity and adjustable degradation rate, and has good mechanical properties, which can meet the requirements of elastic marine waterproofing in marine equipment. Comprehensive requirements for dirty coatings.

Description

technical field [0001] The invention relates to the technical field of marine antifouling materials, in particular to a polyurethane based on polyether ester polyol and its preparation method and application. Background technique [0002] With the increasing development of marine economic activities, new equipment and instruments in marine engineering are developing rapidly, and elastic substrates are widely used in marine equipment and instruments. However, due to the direct contact between the elastic substrate in marine equipment and instruments and seawater, the plants, animals and microorganisms in the ocean are directly attached to the surface of the elastic substrate, which affects the use of marine equipment and instruments. Therefore, it is urgent to develop marine waterproofing materials for elastic substrates. Dirty coating. [0003] Existing marine antifouling coatings usually use acrylic self-polishing antifouling coatings. Due to the hot-sticky and brittle nat...

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): C08G18/66C08G18/42C08G18/32C08G63/664C09D175/06C09D5/16
CPCC08G18/6651C08G18/4244C08G18/3228C08G63/664C09D175/06C09D5/1662
Inventor 易杰代正伟董军李书卿林祥松李梦漪陈勇钟晟余文涛
Owner JIAXING 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