阅读说明：本技术 一种塑胶表面金属化工艺 (Plastic surface metallization process ) 是由 赵汉高 于 2020-12-09 设计创作，主要内容包括：本发明涉及塑胶表面处理技术领域,具体涉及一种塑胶表面金属化工艺,包括如下步骤：首先将塑胶件成型；将成型后的塑胶件表面清洁；对清洁后的塑胶件表面通过碰喷涂上金属涂层；本发明在塑胶件表面做出喷涂层,方便后续其它加工；比化学方式塑胶表面金属化及真空镀金属化等更易加工,更加环保,涂层一体性强,稳定性好,以及更佳的外观效果。(The invention relates to the technical field of plastic surface treatment, in particular to a plastic surface metallization process, which comprises the following steps: firstly, molding a plastic part; cleaning the surface of the molded plastic part; spraying a metal coating on the surface of the cleaned plastic part by collision; the spraying coating is formed on the surface of the plastic part, so that the subsequent other processing is facilitated; compared with chemical plastic surface metallization, vacuum metallization and the like, the coating is easier to process, is more environment-friendly, and has strong coating integrity, good stability and better appearance effect.)

1. A plastic surface metallization process is characterized in that: the method comprises the following steps:

s1, firstly, molding the plastic part;

s2, cleaning the surface of the molded plastic part;

and S3, spraying a metal coating on the surface of the cleaned plastic part by collision.

2. The plastic surface metallization process of claim 1, wherein: the plastic part is formed by ABS, PC, LCP, PPS, PPO, PTFE or PEEK.

3. The plastic surface metallization process of claim 1, wherein: in step S2, the surface of the plastic part is cleaned by acid washing or ultrasonic cleaning.

4. The plastic surface metallization process of claim 1, wherein: in the step S2, the washed plastic part is dried and then processed in the step S3.

5. The plastic surface metallization process of claim 1, wherein: in the step S3, a metal coating layer is formed by cold spray coating with metal powder.

6. The plastic surface metallization process of claim 5, wherein: the metal powder is copper powder, aluminum powder, stainless steel powder, silver powder or gold powder.

7. The plastic surface metallization process of claim 6, wherein: the particle size of the metal powder is 1-20 μm.

8. The plastic surface metallization process of claim 1, wherein: the thickness of the metal coating is 0.01 mm-1 mm.

9. The plastic surface metallization process of claim 1, wherein: the spraying speed of the spraying is more than 600 m/s.

Technical Field

The invention relates to the technical field of plastic surface treatment, in particular to a plastic surface metallization process.

Background

In order to improve the diversified durability of the appearance of digital products, the housings of many digital products are subjected to various processing treatments, especially various protective layers are coated on the surface of a plastic housing, which is the most common treatment mode in the market, wherein the treatment processes are diversified, and electroplating, laser engraving, printing and the like are mostly used. Wherein, the electroplating is to plate a metal layer on the surface of the plastic, which causes great environmental pollution and poor adhesion.

Disclosure of Invention

In order to solve the problems, the invention provides a method for preparing a spray coating on the surface of a plastic part, which is convenient for subsequent other processing; compared with chemical plastic surface metallization, vacuum metallization and the like, the plastic surface metallization process is easier to process, more environment-friendly, strong in coating integrity, good in stability and better in appearance effect.

The technical scheme adopted by the invention is as follows: a plastic surface metallization process comprises the following steps:

s1, firstly, molding the plastic part;

s2, cleaning the surface of the molded plastic part;

and S3, spraying a metal coating on the surface of the cleaned plastic part by collision.

The further improvement to above-mentioned scheme does, the plastic part is ABS, PC, LCP, PPS, PPO, PTFE or PEEK shaping.

In a further improvement of the above solution, in step S2, the surface of the plastic part is cleaned by acid washing or ultrasonic wave.

In a further improvement of the above method, in step S2, the washed plastic part is dried and then subjected to step S3.

In a further improvement of the above, in step S3, the metal coating is formed by cold spraying metal powder.

The scheme is further improved in that the metal powder is copper powder, aluminum powder, stainless steel powder, silver powder or gold powder.

In a further improvement of the above solution, the metal powder has a particle size of 1 μm to 20 μm.

The further improvement of the scheme is that the thickness of the metal coating is 0.01 mm-1 mm.

The further improvement of the scheme is that the spraying speed of the spraying is more than 600 m/s.

The invention has the beneficial effects that:

compared with the traditional plastic chemical metallization process, the invention makes a spray coating on the surface of the plastic part, thereby facilitating other subsequent processing; compared with chemical plastic surface metallization, vacuum metallization and the like, the coating is easier to process, is more environment-friendly, and has strong coating integrity, good stability and better appearance effect. Specifically, firstly, molding a plastic part; cleaning the surface of the molded plastic part; spraying a metal coating on the surface of the cleaned plastic part by collision; the shell is particularly suitable for digital products and has strong practicability.

Detailed Description

The present invention will be further described below.

A plastic surface metallization process comprises the following steps:

s1, firstly, molding the plastic part;

s2, cleaning the surface of the molded plastic part;

and S3, spraying a metal coating on the surface of the cleaned plastic part by collision.

The plastic part is formed by ABS, PC, LCP, PPS, PPO, PTFE or PEEK, different plastic parts are selected according to different use environments, and the application range is wide.

In step S2, the surface of the plastic part is cleaned by acid washing or ultrasonic wave, and the cleaned plastic part is dried and then is processed in step S3; forming a metal coating layer by cold spraying metal powder; after drying, cold spraying is carried out, so that the metal coating has better adhesion effect and stronger integrity.

The metal powder is copper powder, aluminum powder, stainless steel powder, silver powder or gold powder; the practicability is strong according to different choices of products.

The particle size of the metal powder is 1-20 μm; the particle size of the metal powder can be selected according to metal piece bodies with different sizes, and better adhesion in the spraying process can be ensured.

The thickness of the metal coating is 0.01 mm-1 mm; the thickness is preferably 0.1 mm-0.2 mm, the adhesion effect is good, and the spraying efficiency is high.

The spraying speed of the spraying is more than 600 m/s; the spraying speed of more than 600m/s can ensure that the copper powder particles have better adhesion effect.

The spraying coating is formed on the surface of the plastic part, so that the subsequent other processing is facilitated; compared with chemical plastic surface metallization, vacuum metallization and the like, the coating is easier to process, is more environment-friendly, and has strong coating integrity, good stability and better appearance effect. Specifically, firstly, molding a plastic part; cleaning the surface of the molded plastic part; spraying a metal coating on the surface of the cleaned plastic part by collision; the shell is particularly suitable for digital products and has strong practicability.

The invention is suitable for mobile phones, watches, electronic cigarettes, tablet computers, earphones, sound boxes, televisions and other digital products or artware; but also suitable for miniature product antennas, PCB circuits, shielding cases and the like.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.