Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing water-based coating composition of automobile glass seals

A coating composition, a technology for automotive glass, applied in coatings, polyamide coatings, polycarbonate coatings, etc., can solve the problems of not meeting the needs of environmental friendliness, poor wear strength, low sliding properties, etc., and achieve excellent The effect of abrasion resistance, frost resistance and surface sliding properties, good abrasion resistance and sliding properties, good weather resistance

Active Publication Date: 2013-01-23
SHANGHAI LANOU CHEM IND TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The earliest coatings used were oil-based coatings containing a polydimethylsiloxane polymer matrix, which, while producing good frost resistance, generally low slip, and good finish and feel, generally Sexually too flimsy
Moreover, under extreme weather conditions, such as cold, heat, wind and rain, the elastomer part will be exposed, and the coating components that are not chemically bonded silicone or fluorocarbon polymers in the coating film will Gradual loss, resulting in less surface slip of the elastomeric part, which is undesirable
Silicones can also penetrate the coating surface and transfer from there to nearby surfaces, thereby affecting subsequent coating or processing
In addition, the high cost of fluorocarbon polymers has also become one of its disadvantages
More importantly, solvent-based coatings are increasingly unable to meet the industrial needs for low volatile organic content (VOC) coatings and environmental friendliness
[0005] Although some people have improved and developed water-based silicone coatings later on, using solid spherical siloxane addition methods to meet the general requirements for wear resistance, but it is still impossible to avoid the poor wear strength and easy seepage caused by silicone itself. shortcoming

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Preparation of component A

[0021] 69.2 parts of polycarbonate, 3.6 parts of black pigment slurry, 0.8 part of polyether siloxane flow additive and 0.4 part of antifoaming agent were thoroughly mixed until uniform.

[0022] 2. Then add 15 parts of water-based nano-emulsion (mainly composed of polyethylene, water, etc.), and disperse until uniform with paddle stirring.

[0023] Finally, add 1.2 parts of leveling agent, 1 part of thickener, 4.7 parts of co-solvent and 6 parts of deionized water, and then mix until uniform.

[0024] The resulting polyol solution has a specific gravity of 1.05g / cm at 20°C 3 , with a solid content of 31%, a viscosity of 19mpa·s at 23°C, and a stable homogeneous dispersion in storage.

[0025] 3. Mix and stir components B and A to prepare a coating solution

[0026] Combine the A component of the polyol dispersion obtained above, and the B component, that is, LPG100A (produced by Bayer, commercially available curing agent after dilutio...

Embodiment 2

[0031] 1. Preparation of component A

[0032] 69.2 parts of polyamide, 3.6 parts of black pigment paste, 0.8 part of polyether siloxane flow additive and 0.4 part of antifoaming agent were thoroughly mixed until uniform.

[0033] 2. Then add 7 parts of water-based nano-emulsion (mainly composed of polyethylene, water, etc.), and disperse until uniform with paddle stirring.

[0034] Finally, add 1.2 parts of leveling agent, 1 part of thickener, 4.7 parts of co-solvent and 6 parts of deionized water, and then mix until uniform.

[0035] The resulting polyol solution has a specific gravity of 1.05g / cm at 20°C 3 , with a solid content of 31%, a viscosity of 19mpa·s at 23°C, and a stable homogeneous dispersion in storage.

[0036] 3. Mix and stir components B and A to prepare a coating solution

[0037] Combine the A component of the polyol dispersion obtained above, and the B component, that is, LPG100A (produced by Bayer, commercially available curing agent after dilution by L...

Embodiment 3

[0042] 1. Preparation of component A

[0043] 69.2 parts of polyamide, 3.6 parts of black pigment paste, 0.8 part of polyether siloxane flow additive and 0.4 part of antifoaming agent were thoroughly mixed until uniform.

[0044] 2. Then add 1 part of water-based nanoemulsion (mainly composed of polyethylene, water, etc.), and stir it with a paddle until it is evenly dispersed.

[0045] Finally, add 1.2 parts of leveling agent, 1 part of thickener, 4.7 parts of co-solvent and 6 parts of deionized water, and then mix until uniform.

[0046] The resulting polyol solution has a specific gravity of 1.05g / cm at 20°C 3 , with a solid content of 31%, a viscosity of 19mpa·s at 23°C, and a stable homogeneous dispersion in storage.

[0047] 3. Mix and stir components B and A to prepare a coating solution

[0048] Combine the A component of the polyol dispersion obtained above, and the B component, that is, LPG100A (produced by Bayer, commercially available curing agent after dilution...

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
viscosityaaaaaaaaaa
friction coefficientaaaaaaaaaa
friction coefficientaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing a water-based coating composition of automobile glass seals, which comprises the following steps of: preparing 100 weight parts of component A by mixing 20 to 50 nano units of nano water-based emulsion mainly containing at least one cross-linkable resin and polyethylene; and mixing the 100 weight parts of component A and 5 to 20 weight parts of component B, namely water-based cross-linking agent. Compared with the prior art, the water-based coating composition has the advantages of strong wear resistance, good slide and the like.

Description

technical field [0001] The invention relates to a water-based coating composition, in particular to a preparation method of a water-based coating composition for an automotive glass seal. Background technique [0002] The improvement of the wear resistance and surface sliding performance of rubber grooves of automotive glass sealing parts is generally achieved by coating certain materials on the surface. The earliest method was the flocking covering method. However, this method is expensive and the process is cumbersome. It has been gradually replaced by coating coating in the past 10 years. [0003] In short, coating coverage means that a special polymer coating material is sprayed onto the surface of the seal by spraying, and a coating film is formed on the surface of the seal. At the same time, with the help of the wear resistance, slipperiness and low friction of the coating, the car window glass can slide up and down smoothly and durably. [0004] The earliest coating...

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): C09D169/00C09D177/00C09D177/12C09D175/04C09D133/04C09D123/06
Inventor 陈正林
Owner SHANGHAI LANOU CHEM IND TECH