Waterproof coating glue and tarpaulin treatment method

A waterproof coating and pretreatment technology, applied in the field of coating adhesive, can solve the problems of poor wetting of polyester, high surface tension, poor coating adhesion, etc., and achieve good waterproof performance, reliable connection, and good flexibility.

Inactive Publication Date: 2019-07-19
浙江弘达环保科技有限公司
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned coating glue is a solvent-based polyurethane coating. Methyl ethyl ketone and dimethyl formamide as organic solvents will cause certain harm to the human body and the environment. Therefore, the water-based polyurethane resin has gradually replaced the solvent-based coating. However, due to the surface tension of water, water-based polyurethane Large, poor wettability to surface hydrophobic polyester, so the coating adhesion will be relatively poor, which needs to be improved

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
  • Waterproof coating glue and tarpaulin treatment method
  • Waterproof coating glue and tarpaulin treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A waterproof coating glue, comprising the following components by weight:

[0046] 90 parts of aqueous polyurethane emulsion;

[0047] Sodium bicarbonate 0.6 part;

[0048] 3 parts carboxymethyl cellulose

[0049] Nano titanium dioxide 1.2 parts

[0050] Dispersant NNO 0.48 parts

[0051] 1.6 parts of citric acid.

[0052] The preparation process of aqueous polyurethane emulsion is as follows:

[0053] Step 1, in parts by weight, mix 60 parts of PTMG-1000 and 20 parts of PCDL-1000 and stir evenly, heat to 105°C for 3 hours and then cool to room temperature;

[0054] Step 2, add 30 parts of IPDI, 0.08 parts of dibutyltin dilaurate, and 0.08 parts of stannous octoate, pass through nitrogen protection, stir evenly and heat to 85°C, and continue to react for 120 minutes;

[0055] Step 3: After the reaction is completed, add 4 parts of 2,2-dimethylolpropionic acid and 10 parts of 1,4-butanediol, heat to 70°C, and react for 3 hours;

[0056] Step 4: After the reaction,...

Embodiment 2

[0063] A waterproof coating glue, comprising the following components by weight:

[0064] 80 parts of aqueous polyurethane emulsion;

[0065] 0.4 parts of sodium bicarbonate;

[0066] Carboxymethylcellulose 2.4 parts

[0067] Nano titanium dioxide 0.8 parts

[0068] Dispersant NNO 0.42 parts

[0069] 1.2 parts of citric acid.

[0070] The preparation process of aqueous polyurethane emulsion is as follows:

[0071] Step 1: In parts by weight, mix 55 parts of PTMG-1000 and 17 parts of PCDL-1000 and stir evenly, heat to 100°C for 2 hours and then cool to room temperature;

[0072] Step 2, add 25 parts of IPDI, 0.06 parts of dibutyltin dilaurate, and 0.06 parts of stannous octoate, pass through nitrogen protection, stir evenly and heat to 80°C, and continue to react for 100 minutes;

[0073] Step 3: After the reaction is completed, add 3 parts of 2,2-dimethylolpropionic acid and 8 parts of 1,4-butanediol, heat to 60°C, and react for 2 hours;

[0074] Step 4: After the react...

Embodiment 3

[0081] A waterproof coating glue, comprising the following components by weight:

[0082] 85 parts of aqueous polyurethane emulsion;

[0083] 0.5 parts of sodium bicarbonate;

[0084] Carboxymethylcellulose 2.7 parts

[0085] Nano titanium dioxide 1 part

[0086] Dispersant NNO 0.45 parts

[0087] 1.4 parts of citric acid.

[0088] The preparation process of aqueous polyurethane emulsion is as follows:

[0089] Step 1: In parts by weight, mix 58 parts of PTMG-1000 and 18 parts of PCDL-1000 and stir evenly, heat to 103°C for 2.5 hours and then cool to room temperature;

[0090] Step 2, add 28 parts of IPDI, 0.07 parts of dibutyltin dilaurate, and 0.07 parts of stannous octoate, pass through nitrogen protection, stir evenly and heat to 82°C, and continue the reaction for 110 minutes;

[0091] Step 3: After the reaction is completed, add 3.5 parts of 2,2-dimethylolpropionic acid and 9 parts of 1,4-butanediol, heat to 65°C, and react for 2.5 hours;

[0092] Step 4: After th...

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 waterproof coating glue and a tarpaulin treatment method. The waterproof coating glue is prepared from, by weight, 80-90 parts of an aqueous polyurethane emulsion, 0.4-0.6 part of a foaming agent, 2.4-3 parts of a thickening agent and 0.8-1.2 parts of nano titanium dioxide; the tarpaulin treatment method includes the following steps of S1 pretreatment, S2 foaming, S3 topcoating and S4 drying. The coating glue uses the aqueous polyurethane emulsion as a main material, and has the advantages of no pollution, safety and reliability. A polyester base fabric is hydrophilically modified, the coating glue is improved by a formula, the joint strength between a coating and the base fabric is high, and the surface coating of the tarpaulin has good waterproof performance, adhesion and flexibility.

Description

technical field [0001] The invention relates to a coating glue, in particular to a waterproof coating glue and a waterproof cloth treatment method. Background technique [0002] Coated cloth mainly refers to coating a layer of coating glue with special functions on the basis of cloth by special process, which is widely used in various outdoor products. The ancient Chinese people have already begun to try to apply tung oil on the woven cloth to make waterproof cloth. Today, the types of coating adhesives have gradually evolved from natural compounds to artificial polymers, thereby improving the performance of coating adhesives in all aspects. At present, common coating adhesive materials include PU, PA, PVC, silicone, etc. . [0003] For tent fabrics, it is necessary to have excellent water resistance, light weight, anti-ultraviolet rays, and long service life. Therefore, PU-coated polyester fabrics are often used as tent fabrics instead of traditionally used canvas. [00...

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 Applications(China)
IPC IPC(8): D06N3/00D06N3/14
CPCD06N3/0036D06N3/005D06N3/0063D06N3/0077D06N3/14D06N3/146D06N2209/128
Inventor 王杰
Owner 浙江弘达环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap