Menu
BLOG News

Automotive Paint

Date: 2016-10-19
Viewed: 80

Automotive PaintAutomotive paint is paint used on automobiles for both protection and decoration purposes.[1][2] The paint layers total to around 100 µm.

Characterization

Modern automobile paint is applied in several layers, with a total thickness of around 100 µm(0.1mm).

 

History

In the early days of the automobile industry, paint was applied manually and dried for weeks at room temperature. As mass production of cars started, paint was dried in ovens. Nowadays, paint is usually applied by robotic arms and dried in just a few hours.

Environmental laws

Until several decades ago lead, chromium and otherheavy metals were used in automotive paint.Environmental laws have prohibited this, which has resulted in a move to water-based paints. Up to 85% of lacquer paint can evaporate into the air, polluting the atmosphere. Enamel paint is better for the environment in that regard, and has become the most widely used paint nowadays.[1]

 

Processes and coatings

Preparation

High pressure water spray jets are directed to the body. Without proper pretreatment, premature failure of the finish system can almost be guaranteed.

A phosphate coat is necessary to protect the body against corrosion effects and prepares the surface for the E-Coat.

The body is dipped into the Electro Coat Paint Operation (ELPO/E-Coat), then a high voltage is applied. The body works as a cathode and the paint as an anode sticking on the body surface. It is an eco-friendly painting process. In E-Coat, also called CED paint, utilisation is approximately 99.9% and has great SST life compared to other painting processes.

 

Primer

See also: Primer (paint)

The primer is the first coat to be applied. The main functions of the primer are to act as a leveler and protector, and to make the base coat easier to apply to the component to which it is applied. The primer serves several purposes. It serves as a leveler, which is important since the cab often has marks and other forms of surface defect after being manufactured in the body shop. A smoother surface is created by leveling out these defects and therefore a better final product. It serves as a protector, the primer will protect from corrosion, heat differences, bumps, stone-chips, UV-light, etc. It also servers improves ease of application by making it easier for paints to stick to the surface, a more varied range of paints can be used.

 

Basecoat

The base coat is applied after the primer coat. This coat contains the visual properties of color and effects, and is usually the one referred to as the paint. Base coat used in automotive applications is commonly divided into three categories: solid, metallic, and pearlescent pigments.

· Solid paints have no sparkle effects except the color. This is the easiest type of paint to apply, and the most common type of paint for heavy transportation vehicles, construction equipment and aircraft. It is also widely used on cars, trucks, and motorcycles.

· Metallic paints contain aluminium flakes to create a sparkling and grainy effect, generally referred to as a metallic look. This paint is harder to manage than solid paints because of the extra dimensions to consider. Metallic and pearlescent paints must be applied evenly to ensure a consistent looking finish without light and dark spots which are often called "mottling".

· Pearlescent Paints contain special iridescent pigments commonly referred to as "pearls". Pearl pigments impart a colored sparkle to the finish which works to create depth of color. Pearlescent paints can be two stage in nature (pearl base color + clear) or 3 stage in nature (basecoat + pearl midcoat + clearcoat).[3]

 

Clearcoat

Usually sprayed on top of a colored basecoat, clearcoat is a glossy and transparent coating that forms the final interface with the environment. For this reason, clearcoat must be durable enough to resist abrasion and chemically stable enough to withstand UV light. Clearcoat can be either solvent or water-borne.[4] One part and two part formulations are often referred to as 1k and 2k respectively.[5]

 

References

1. ^ Jump up to:a b John Pfanstiehl (1998). Automotive Paint Handbook: Paint Technology for Auto Enthusiasts & Body Shop Professionals. Penguin. ISBN 978-1-55788-291-2.

2. Jump up^ Kimio Toda; Abraham Salazar; Kozo Saito (21 December 2012). Automotive Painting Technology: A Monozukuri-Hitozukuri Perspective. Springer Science & Business Media. ISBN 978-94-007-5095-1.

3. Jump up^ A Guide to Auto Paint Colors

4. Jump up^ DuPont Automotive: Paint & Coatings for Metal Exterior

5. Jump up^ 1K Coating vs 2K Coatings

6. Jump up^ "TKS Industrial". Retrieved 5 January 2016.

· Automotives Paints and Coatings, Streitberger & Dössel, 2008

· Hans-Joachim Streitberger; Karl-Friedrich Dossel (31 March 2008). Automotive Paints and Coatings. John Wiley & Sons. ISBN 978-3-527-30971-9.

 

Share to:
News / 推荐新闻 More
2016 - 10 - 20
Auto detailing is the performance of thorough cleaning, restoration, and finishing of an automobile, both inside and out, to produce a show-quality level of detail. BackgroundProfessional detailing services and sale of products to both professionals and hobbyists represent a large commercial presence in places where autos are a primary mode of transport. In the United States alone, the profes...
2016 - 10 - 19
Automotive paint is paint used on automobiles for both protection and decoration purposes.[1][2] The paint layers total to around 100 µm.CharacterizationModern automobile paint is applied in several layers, with a total thickness of around 100 µm(0.1mm). HistoryIn the early days of the automobile industry, paint was applied manually and dried for weeks at room temperature. As mass p...
2017 - 05 - 12
The Story of Water Repellent Material  On a sunny day, Seol Jaecheol and his friends went for a walk in the park. Just as they marveled at the blooming lotus, suddenly it started to rain. His friends immediately ran to the nearby pavilion, but he was motionlessly standing there. His friends shouted to him: "Run quickly or you will get very wet, Don’t get crazy" But he still sta...


86 20 37155632   82 61 7557124
tacsjc@naver.com  tacglobal@naver.com
TACSYSTEM (KOREA) Corp.
Copyright ©1995 - 2017 TACSYSTEM (KOREA) Corp.
犀牛云提供企业云服务
X
1

QQ设置

3

SKYPE 设置

4

阿里旺旺设置

5

电话号码管理

6

二维码管理

展开