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

A kind of preparation method of PVC waterproof coating

A technology for waterproof coatings and raw materials, applied in epoxy resin coatings, coatings, etc., can solve the problems of uneven fusion and dispersion, affecting performance, low thermal stability and anti-aging performance of PVC, and achieve uniform hydrophobicity, high Adhesion performance, simple effect of coating process

Active Publication Date: 2021-02-05
辽宁恒智科技发展有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of preparation method of PVC waterproof coating, through alkoxy graft polyvinyl chloride and fluorinated epoxy resin directly carry out curing cross-linking action, make branched polyvinyl chloride and fluorinated epoxy resin Curing and cross-linking into a network structure, so that nano-titanium dioxide is wrapped in it, and better fixation of nano-titanium dioxide can be achieved. At the same time, alkoxy and fluorine functional groups are evenly distributed on the network structure, making the coating uniformly hydrophobic, Anti-aging and thermal stability, solve the problem of mixing polyvinyl chloride and modifier directly through the melt mixing method in the prior art, due to the interfacial tension between polyvinyl chloride and modifier, resulting in uneven fusion and dispersion, and then Affects the improved performance, making the thermal stability and anti-aging performance of the modified PVC still low

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 preparation method of PVC waterproof coating
  • A kind of preparation method of PVC waterproof coating
  • A kind of preparation method of PVC waterproof coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]The concrete preparation process of branched graft modifier is as follows:

[0031] ①Put 3.02kg of trimethylolpropane triglycidyl ether into the reaction kettle, cool down to 5-10°C, add 0.57kg of allylamine dropwise, stir for 3-4 hours, then heat up to 30-35°C for reaction 1- 1.5h, a colorless and transparent solution was obtained;

[0032] ②Add 2.21kgr-aminopropyltriethoxysilane to the reaction kettle in step ①, raise the temperature to 80-90℃ and stir and reflux for 9-10h, then lower it to room temperature and add 0.66kg of ethylenediamine to the reaction kettle, keep the temperature After reflux for 4-5 hours, the product was distilled under reduced pressure to obtain a branched graft modifier.

Embodiment 2

[0034] The concrete preparation process of branched graft modifier is as follows:

[0035] ①Put 3.02kg of trimethylolpropane triglycidyl ether into the reaction kettle, cool down to 5-10°C, add 0.57kg of allylamine dropwise, stir for 3-4 hours, then heat up to 30-35°C for reaction 1- 1.5h, a colorless and transparent solution was obtained;

[0036] ②Add 1.77kgr-aminopropyltriethoxysilane to the reaction kettle in step ①, raise the temperature to 80-90℃ and stir and reflux for 9-10h, then lower it to room temperature and add 0.78kg of ethylenediamine to the reaction kettle, keep the temperature After reflux for 4-5 hours, the product was distilled under reduced pressure to obtain a branched graft modifier.

Embodiment 3

[0038] The concrete preparation process of branched graft modifier is as follows:

[0039] ①Put 3.02kg of trimethylolpropane triglycidyl ether into the reaction kettle, cool down to 5-10°C, add 0.57kg of allylamine dropwise, stir for 3-4 hours, then heat up to 30-35°C for reaction 1- 1.5h, a colorless and transparent solution was obtained;

[0040] ②Add 2.43kgr-aminopropyltriethoxysilane to the reaction kettle of step ①, raise the temperature to 80-90℃ and stir and reflux for 9-10h, then lower it to room temperature and add 0.66kg of ethylenediamine to the reaction kettle, keep the temperature constant After reflux for 4-5 hours, the product was distilled under reduced pressure to obtain a branched graft modifier.

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 preparation method of a PVC waterproof coating. The specific preparation process is as follows: the prepared branched polyvinyl chloride and absolute ethanol are added to a stirring tank, and nanometer titanium dioxide, a plasticizer and a defoamer are added to it at the same time, Stir and mix evenly to obtain the main slurry, add the prepared fluorinated epoxy resin powder into the main slurry, stir and react at 40-45°C for 30-40min, and obtain a viscous slurry, which is PVC waterproof coating. In the present invention, the branched polyvinyl chloride and the fluorinated epoxy resin are cured and crosslinked to form a network structure by directly curing and crosslinking the alkoxy-grafted polyvinyl chloride and the fluorinated epoxy resin, so that the nano-titanium dioxide is wrapped in the Among them, better fixation of nano-titanium dioxide can be achieved, and at the same time, alkoxyl and fluorine functional groups are evenly distributed on the network structure, so that the coating has uniform hydrophobicity, anti-aging and thermal stability.

Description

technical field [0001] The invention belongs to the field of paint preparation and relates to a preparation method of PVC waterproof paint. Background technique [0002] Polyvinyl chloride has excellent acid resistance, alkali resistance, corrosion resistance, high hydrophobicity, high mechanical properties and strong electrical insulation properties, and is widely used in the protection of the surface of the board. Poor resistance, hydrogen chloride begins to decompose at 150 ° C, and adverse reactions occur with the amount of plasticizer content, so modifiers are usually added during processing and use to improve its thermal stability and anti-aging performance. [0003] In the preparation process of existing polyvinyl chloride coatings, polyvinyl chloride is usually polymerized and modified and then melt-mixed with anti-aging agents and heat stabilizers to make coatings. There is interfacial tension between polyvinyl chloride and modifiers, resulting in Inhomogeneous fus...

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): C09D163/00C09D127/22C09D7/61C09D7/20C08G59/14C08F114/06C08F8/42C08F8/32
CPCC08F8/32C08F8/42C08G59/1455C08K2003/2241C08K2201/011C08L2201/08C08L2312/00C09D163/00C09D7/20C09D7/61C08L27/22C08K3/22C08F114/06
Inventor 何文霞
Owner 辽宁恒智科技发展有限公司
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