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

Application of a modified epoxy resin, preparation method and emulsion preparation method thereof, and waterproof coating

A bisphenol epoxy resin, epoxy resin curing technology, applied in epoxy resin coatings, polyether coatings, coatings and other directions, can solve the expansion and contraction reaction and decline of cement molecules, water molecules infiltrating into cement, coatings, etc. Force splitting, aging and other problems, to achieve the effect of strong expansion and shrinkage adaptability, good anti-aging effect, excellent water resistance and physical properties

Active Publication Date: 2021-12-07
金向红
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] After the above cement waterproof coating is used in combination with cement, it will have a good waterproof effect in a short period of time, but as time changes, especially for some water conservancy projects, the humid environment and the temperature brought by the alternation of winter and summer for several years The change will cause the cement molecules to have expansion and contraction reactions. With the expansion and contraction of the cement molecules, the coating will slowly split and age under force, making it difficult to attach to the surface of the cement molecules, which will reduce the water resistance of the waterproof coating and allow water molecules to penetrate into the cement.

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
  • Application of a modified epoxy resin, preparation method and emulsion preparation method thereof, and waterproof coating
  • Application of a modified epoxy resin, preparation method and emulsion preparation method thereof, and waterproof coating
  • Application of a modified epoxy resin, preparation method and emulsion preparation method thereof, and waterproof coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of emulsion preparation method of modified bisphenol epoxy resin, its preparation step is as follows:

[0037] Step 1: Prepare 55 parts of modified bisphenol epoxy resin, 55 parts of polyethylene glycol, 1 part of TEA catalyst, 8 parts of water and 4 parts of emulsifier respectively according to parts by weight;

[0038] Step 2: Heat polyethylene glycol at 90°C to melt, add modified bisphenol epoxy resin and TEA catalyst, and stir evenly;

[0039] Step 3: Heat the evenly stirred mixture to 115° C., and maintain this temperature for 8 hours to obtain a water-based modified bisphenol epoxy resin;

[0040] Step 4: Add water and an emulsifier to the water-based modified bisphenol epoxy resin, stir and mix to prepare a modified bisphenol epoxy resin emulsion.

[0041]Wherein, the synthesis method of the modified bisphenol epoxy resin is as follows: according to the molar ratio, 1 part of bisphenol A is mixed with 0.05 part of bisphenolic acid, and then 2.14 parts of ...

Embodiment 2

[0043] A kind of emulsion preparation method of modified bisphenol epoxy resin, its preparation step is as follows:

[0044] Step 1: Prepare 70 parts of modified bisphenol epoxy resin, 30 parts of polyethylene glycol, 2 parts of TEA catalyst, 8 parts of water and 8 parts of emulsifier respectively according to parts by weight;

[0045] Step 2: Heat polyethylene glycol at 90°C to melt, add modified bisphenol epoxy resin and TEA catalyst, and stir evenly;

[0046] Step 3: Heat the evenly stirred mixture to 115° C., and maintain this temperature for 8 hours to obtain a water-based modified bisphenol epoxy resin;

[0047] Step 4: Add water and an emulsifier to the water-based modified bisphenol epoxy resin, stir and mix to prepare a modified bisphenol epoxy resin emulsion.

[0048] Wherein, the synthesis method of the modified bisphenol epoxy resin is as follows: according to the molar ratio, 1 part of bisphenol A is mixed with 0.13 part of bisphenolic acid, and then 2.3 parts of...

Embodiment 3

[0050] A kind of emulsion preparation method of modified bisphenol epoxy resin, its preparation step is as follows:

[0051] Step 1: Prepare 80 parts of modified bisphenol epoxy resin, 15 parts of polyethylene glycol, 3 parts of TEA catalyst, 8 parts of water and 10 parts of emulsifier respectively according to parts by weight;

[0052] Step 2: Heat polyethylene glycol at 90°C to melt, add modified bisphenol epoxy resin and TEA catalyst, and stir evenly;

[0053] Step 3: Heat the evenly stirred mixture to 115° C., and maintain this temperature for 8 hours to obtain a water-based modified bisphenol epoxy resin;

[0054] Step 4: Add water and an emulsifier to the water-based modified bisphenol epoxy resin, stir and mix to prepare a modified bisphenol epoxy resin emulsion.

[0055] Wherein, the synthesis method of the modified bisphenol epoxy resin is as follows: according to the molar ratio, 1 part of bisphenol A is mixed with 0.15 part of bisphenolic acid, and then 2.35 parts ...

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 belongs to the technical field of waterproof coatings for engineering, and discloses a modified bisphenol epoxy resin, a preparation method and an emulsion preparation method thereof, and the application of waterproof coatings, including components A and B, in parts by weight, The A component comprises 10-25 parts of modified bisphenol epoxy resin emulsion according to claim 4, 10-90 parts of acrylate emulsion, 1-5 parts of water, 0.15-0.2 parts of dispersant, 0.15-0.65 parts of Defoamer, 0.15-0.3 wetting agent, the B component includes 30-90 parts of cement, 30-60 parts of filler, 0.1-0.6 part of water reducing agent and 3-8 parts of curing agent. The carboxyl group of the modified epoxy resin prepared by the present invention has preferential adsorption between the cement particles, is resistant to temperature changes, has stronger adaptability to the expansion and contraction of cement, and has better anti-aging effect. The modified epoxy resin and acrylic acid of the present invention The reasonable ratio of the ester emulsion makes the waterproof coating of the present invention have better water resistance and physical properties, and through the synergistic effect of the MD650 epoxy resin curing agent and the MD2542 epoxy resin curing agent, the waterproof coating can be quickly cured in a humid environment.

Description

technical field [0001] The invention belongs to the technical field of engineering waterproof coatings, and specifically relates to a modified epoxy resin, a preparation method and an emulsion preparation method thereof, and the application of waterproof coatings. Background technique [0002] Polymer cement waterproof coating, referred to as JS waterproof coating, J refers to polymer, S refers to cement, so JS is polymer cement waterproof coating. Polymer cement waterproof coating is an organic liquid material composed of polyacrylate emulsion, ethylene-vinyl acetate copolymer emulsion and other polymer emulsions and various additives. [0003] Polymer cement waterproof coating is a two-component, water-based building waterproof coating made of inorganic powder composed of cement, quartz sand, light and heavy calcium carbonate and other inorganic fillers and various additives through reasonable proportioning and compounding. In construction engineering, JS-composite waterp...

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): C08G59/06C08J3/03C08L63/00C08L71/02C09D133/04C09D163/00C09D171/02C09D7/61C08G59/40
CPCC08G59/06C08G59/40C08J3/03C08J2363/00C08J2371/02C08J2471/02C08L2201/08C09D133/04C09D7/61C08L63/00C08L71/02C08K3/36C08K3/34
Inventor 金向红
Owner 金向红
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