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

A kind of airtight protective coating and preparation method thereof

A protective coating and airtight technology, applied in coatings, epoxy resin coatings, primers, etc., can solve problems such as poor adhesion to substrates at welding points, poor airtightness of sealed cabins, and poor sealing effects , to achieve the effect of dense paint film, good airtight protection effect and excellent adhesion performance

Active Publication Date: 2022-04-12
HUNAN AEROSPACE SANFENG SCI & TECH CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most aluminum alloy cabins are usually spliced ​​by welding, and there will be weld pores in the welded part due to process factors, which makes the airtightness of the sealed cabin poor. At present, the means of airtight protection usually use sealant or A layer of ceramic-based airtight protective material is applied by thermal spraying. The serious disadvantage of this method is that it has poor adhesion to the substrate at the welding point, and the sealing effect is not good, and the construction requires high temperature heating, which is more complicated.

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 airtight protective coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Airtight protective primer

[0036] A1 component

[0037] a. Add 12 parts of epoxy resin E-12 and 36 parts of E-44 to 32 parts of xylene and 16 parts of n-butanol mixture, and disperse at a high speed of 1200 rpm for 15 minutes to obtain a resin dispersion;

[0038] b. Add 0.5 parts of BYK-A530, 0.5 parts of BYK-054, 0.5 parts of BYK-358N, and 0.5 parts of BYK-320 into the prepared resin dispersion, stir well and finally add 2 parts of A187, and disperse at high speed for 15 minutes at 1200rpm , to get the A1 component.

[0039] B1 component

[0040] Add 30 parts of polyamide resin 140 and 40 parts of modified cashew nut shell oil phenalkamide resin 3117 into a mixture of 24 parts of xylene and 6 parts of n-butanol, and disperse at a high speed of 1200 rpm for 15 minutes to obtain component B1.

[0041] When in use, mix components A1 and B1 at a mass ratio of 4:1 to make a sample.

[0042] (2) Airtight protective topcoat

[0043] (1) Modified polyaspartic acid ...

Embodiment 2

[0054] (1) Airtight protective primer

[0055] A1 component

[0056] a. Add 10 parts of epoxy resin E-12 and 40 parts of E-44 to 36 parts of xylene and 10 parts of n-butanol mixture, and disperse at a high speed of 1200 rpm for 15 minutes to obtain a resin dispersion;

[0057] b. Add 0.5 parts of BYK-A530, 0.5 parts of BYK-054, 0.5 parts of BYK-358N, and 0.5 parts of BYK-320 into the prepared resin dispersion, stir well and finally add 2 parts of A187, and disperse at high speed for 15 minutes at 1200rpm , to get the A1 component.

[0058] B1 component

[0059] Add 25 parts of polyamide resin 140 and 45 parts of modified cashew nut shell oil phenolic amide resin 3117 to a mixture of 24 parts of xylene and 6 parts of n-butanol, and disperse at high speed for 15 minutes at 1200 rpm to obtain component B1.

[0060] When in use, mix components A1 and B1 at a mass ratio of 4:1 to make a sample.

[0061] (2) Airtight protective topcoat

[0062] (1) Modified polyaspartic acid es...

Embodiment 3

[0073] (1) Airtight protective primer

[0074] A1 component

[0075] a. Add 8 parts of epoxy resin E-12 and 40 parts of E-44 to 32 parts of xylene and 16 parts of n-butanol mixture, and disperse at a high speed of 1200 rpm for 15 minutes to obtain a resin dispersion;

[0076] b. Add 0.5 parts of BYK-A530, 0.5 parts of BYK-054, 0.5 parts of BYK-358N, and 0.5 parts of BYK-320 into the prepared resin dispersion, stir well and finally add 2 parts of A187, and disperse at high speed for 15 minutes at 1200rpm , to get the A1 component.

[0077] B1 component

[0078] Add 20 parts of polyamide resin 140 and 50 parts of modified cashew nut shell oil phenalkamide resin 3117 into a mixture of 24 parts of xylene and 6 parts of n-butanol, and disperse at high speed for 15 minutes at 1200 rpm to obtain component B1.

[0079] When in use, mix components A1 and B1 at a mass ratio of 4:1 to make a sample.

[0080] (2) Airtight protective topcoat

[0081] (1) Modified polyaspartic acid est...

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
adhesivityaaaaaaaaaa
Login to View More

Abstract

The invention discloses an airtight protective coating, and also discloses a preparation method thereof. The airtight protective primer provided by the invention mainly plays the role of bonding, which can effectively improve the adhesion of organic polymers on the aluminum alloy cabin body and weld seam. , The airtight protective topcoat has high solid content and high cross-linking density, which can form a dense paint film on the airtight protective primer, which has the effect of gas sealing and anti-leakage. The airtight protective primer is compounded with E-12 and E-44, which has good adhesion effect and has a certain sealing effect. At the same time, polyamide and cashew nut shell oil phenolic amide resin are used as curing agents to improve the reactivity and cured product. toughness. The airtight protective topcoat is made of polyaspartic acid ester resin, and the paint film is more dense after the film is prepared by the modified resin, elastic curing agent and HDI trimer, and the paint has a high solid content and low viscosity, which is easy to apply.

Description

technical field [0001] The invention relates to the field of airtight protective materials, in particular to an airtight protective coating and a preparation method thereof. Background technique [0002] At present, most aluminum alloy cabins are usually spliced ​​by welding, and there will be weld pores in the welded part due to process factors, which makes the airtightness of the sealed cabin poor. At present, the means of airtight protection usually use sealant or A layer of ceramic-based airtight protective material is applied by thermal spraying. The serious disadvantage of this method is that it has poor adhesion to the substrate at the welding point, and the sealing effect is not good, and the construction requires high temperature heating, which is more complicated. At present, there is no related technology of using an organic polymer coating for airtight protection. The present invention prepares an airtight protective coating by improving the compactness of the or...

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): C09D163/02C09D5/00C08G59/62C08G59/46C09D179/00C09D7/63C08G73/00
CPCC09D163/00C09D5/002C08G59/46C08G59/621C09D179/00C09D7/63C08G73/00C08L2201/14C08L2205/025C08L63/00C08K5/34924C08K5/29
Inventor 杨艺聪张文波徐常利文敬
Owner HUNAN AEROSPACE SANFENG SCI & TECH CO LTD
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