Aqueous chromium-free zinc and aluminum coating and preparation method thereof
A zinc-aluminum paint, water-based technology, applied in the direction of coating, etc., can solve the problems of short service life of paint, annealing, high energy consumption, etc., and achieve the effects of ensuring production and personal safety, shortening time, and working environment sanitation and cleanliness
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Example Embodiment
[0034] 1. Preparation of test sample
[0035] Use 150×70×1.0mm cold-rolled low-carbon steel, punch a Φ6mm hole at one end, and soak the standard sample in 200# solvent oil before coating to clean the oil stains with a brush, and let it dry. Afterwards, use a steel file to file the four sides, and then manually polish it with 0# sandpaper (cloth) until the gray iron base (activated) is covered with soft paper and put in a desiccator for use.
[0036] 2. Test the pretreatment of iron-based parts
[0037] Several M12-18 screws, or several self-owned mechanical parts, are first immersed in alkaline cleaning agent aqueous solution (temperature 70℃) for degreasing and decontamination. After drying, they are sent to the crawler-type shot blasting machine for shot blasting and blasting. Machine steel shot is Φ0.2~0.3mm, shot blasting 15~30 minutes until the workpiece is exposed to the gray iron base is qualified. Take half of the parts listed above for phosphating treatment and put them in...
Example Embodiment
[0042] Example 1
[0043] 1. Preparation of Agent A
[0044] According to the weight ratio, take 17.5 parts of 1,3-propanediol, 1 part of fatty alcohol polyoxyethylene ether (domestic brand O-10), 1.4 parts of fatty alcohol polyoxyethylene ether (domestic brand A-20), 3 parts of 200 #Solvent oil, 2 parts of polyoxyethylene polyoxypropylene block polyether (domestic brand X-1005), mix and stir, add 25 parts of flaky composite powder with a weight ratio of zinc to aluminum of 5:1, use a Koles high-speed disperser (Rotating speed 1400 rpm) fully moisten and disperse uniformly, then add 0.1 part of non-ionic polyurethane associative thickener, and stir for 12 hours with a mixer (rotating speed 600-800 rpm).
[0045] 2. Preparation of B agent
[0046] According to the weight ratio, add 15 parts of γ-glycidoxypropyltrimethoxysilane to 35 parts of deionized water, and stir for more than 2 hours until the solution is colorless and transparent.
[0047] 3. Add agent A to agent B and stir for ...
Example Embodiment
[0052] Example 2
[0053] 1. Preparation of Agent A
[0054] According to the weight ratio, add 18 parts of 1,3-propylene glycol, 1.0 part of fatty acid polyoxyethylene ester (domestic brand SG), 1.8 parts of fatty alcohol polyoxyethylene ether (domestic brand A-20), 4 parts of 200# solvent oil , 20 parts of dry powdered ultra-fine scaly zinc powder, 5 parts of dry powdered ultra-fine scaly aluminum powder, fully wetted and dispersed evenly with a Corus high-speed disperser (rotating speed 1400 rpm), and then added 0.2 part of non-ionic Type polyurethane associative thickener, stir for 12 hours with a mixer (rotating speed 600-800 rpm).
[0055] 2 Prepare agent B according to the method of Example 1
[0056] 3. Add agent A to agent B and stir for 10 hours to obtain a uniform water-based zinc aluminum coating.
[0057] 4. Take a number of test-coated workpieces after shot blasting, immerse them in the coating solution for about 10 seconds, then spin off the remaining liquid in a centr...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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