Automotive coatings refer to coatings applied to various types of vehicle bodies and components such as sedans. From the perspective of the industrial chain, upstream raw materials mainly include some chemicals, including resins (epoxy resin, acrylic resin, polyurethane, phenolic resin, etc.), inorganic pigments (titanium dioxide, iron oxide, etc.), organic pigments (azo pigments, etc.), organic solvents (isopropanol, butanone, PMA, etc.), and additives (dispersants, emulsifiers, etc.), Downstream mainly applies to automotive vehicles and components
From the perspective of vehicle painting, it can be divided into two categories: automotive original paint (OEM) and automotive repair paint, which have significant differences in product usage, structural design, coating requirements, end customers, sales models, and other aspects. Original paint is mainly used for the painting of car manufacturers' bodies and components, and large-scale assembly line painting requires high-temperature baking, while automotive repair paint is mainly used for the repair of later body paint. It can be roughly understood that original paint is mainly affected by car production, while car repair paint is mainly affected by car ownership Other classification methods. The fourth generation automotive coatings currently used in China are represented by the fourth and fifth generation cathodic electrophoretic coatings, high-quality acrylic resin coatings with acid rain resistance and scratch resistance, acrylic polyurethane coatings, and coatings with metal and natural colors for the top coat, which are suitable for the three-layer coating system of sedans. According to different classification methods, it can be divided into water-based coatings, solvent coatings, powder coatings, etc; Primer, color paint, topcoat, etc; Waterproof coatings, thermal insulation coatings, etc
Automotive coating structure. Automotive painting needs to be carried out in sequence according to the process. With the development of new painting technologies, the methods of automotive painting are becoming more and more diverse, and more and more beautiful automotive colors will appear in the future. In automotive painting, automotive paint is one of the essential materials
The current car body coating includes at least four layers: electrophoretic primer layer, intermediate layer, color paint layer, and clear paint layer.
. Each layer contains complex process steps, and pre coating treatments such as degreasing, rust removal, and phosphating are required before coating. After coating is completed, the coating quality needs to be tested and evaluated
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China