CN1880515A - Activation method for plastic substrate during electroplating of plastic surface - Google Patents
Activation method for plastic substrate during electroplating of plastic surface Download PDFInfo
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- CN1880515A CN1880515A CN 200610040100 CN200610040100A CN1880515A CN 1880515 A CN1880515 A CN 1880515A CN 200610040100 CN200610040100 CN 200610040100 CN 200610040100 A CN200610040100 A CN 200610040100A CN 1880515 A CN1880515 A CN 1880515A
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- plastic
- frosting
- plastic surface
- substrates
- ultrasonic
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Abstract
The invention discloses an activating method of plastic substrate at plastic surface plating time in the plating industrial technological domain, which is characterized by the following: immersing activated plastic surface in the 1-5g/L H2CrO4 acidic solution for 20-30 min through ultrasound; forming 0.005-0.1 swelling layer on the plastic surface; accelerating molecular movement, surface cleaning and activating; increasing the touching area of solid-liquid interface; making plastic surface form enough swelling layer; immersing through deionized water, ultrasound cleaning; proceeding sensitization and plating disposal.
Description
Technical field
The invention belongs to the electroplating industry technical field.
Background technology
The application of plastics more and more widely because its glossiness is not as metal, decoration function is relatively poor relatively, thus people manage by to plastic surface galvanizing, make metallization of plastic surface, have metalluster and aesthetics.In recent years, along with the fast development of automotive industry, electrical industry and household electrical appliance, ornaments industry, the plastic surface galvanizing alloying technology is constantly development also.Plastics after electroplating, the characteristic of collection plastics, metal is an one, not only outward appearance is able to beautiful decoration, and the physics of goods, mechanical property all have significant improvement, and gives new features such as conduction, magnetic conduction, welding.So plastic electroplating has become a kind of important process of decorative plastic now.If at the plastic surface galvanizing metal, must make frosting have conductive film one metallization of plastic surface earlier, promptly need frosting is carried out pre-treatment---activation.In order to guarantee the good combination of coating and plastic substrate, plastic-substrates must activate.Plastic-substrates activation, surface metalation technology all will produce great influence to tack, stability and the aesthetics of plastic surface galvanizing metallic diaphragm, also affect the coating character such as conductivity, settled layer life-span of metallization of plastic surface layer.If plastic-substrates activation is not enough, then the metallization of plastic surface technology is difficult to reach requirement, cause easily electroplate that back coating is loose, bubbling, decortication, phenomenon such as coarse.
In frosting pre-activated treatment technology and the technology, often adopt frosting coated with conductive coating, deionized water for ultrasonic alligatoring, contain chromate (or CrO at present
3) immersion in the solution, frosting pickling etc.But the resulting pre-activated treatment technology of these methods result, the sticking power of its frosting matrix and coating is not strong, electroplates phenomenons such as back coating still takes place to loosen often, bubbling, decortication.
Summary of the invention
The object of the invention is to invent a kind of can overcome in the prior art plastic surface galvanizing time, and its coating substrate caking power is poor, the easy activation method of the plastic-substrates of loose, bubbling, decortication, technical barrier such as coarse.
Technical solution of the present invention is: frosting to be activated is immersed in 1～5g/L H
2CrO
4In the acidic solution, ultrasonic 20～30 minutes activation plastic-substrates form the thick swell layer of 0.005～0.1mm at frosting.
The present invention utilizes the immersion principle, makes frosting form swell layer; Utilize ultrasonic principle, accelerate molecular thermalmotion, accelerate the cleaning and the activation on surface, increase the contact surface of solid/liquid interfaces, quicken the increase of swell layer, make frosting form enough swell layer.With deionized water immersion, ultrasonic, cleaning, carry out sensitization and plating at last then.
Because the swell layer with the frosting of this kind scheme gained is thicker, thereby the conductive film of the metallization of plastic surface that is generated when carrying out sensitization contacts the jail with plastic-substrates, adhesive power is stronger, the swell layer depths that is penetrated into frosting that the metal ion in the sensitizing can be more deep.Therefore, this method more can the reinforced plastics surface matrix and the sticking power of coating, has also eliminated to electroplate back coating phenomenons such as loose, bubbling, decortication take place.
Above-mentioned ultrasonic power is 200W～1000W, and frequency is 80～250kHz.Purpose is to utilize the ultrasonic frequency conversion of the high frequency field of certain intensity that frosting and solution are interacted, and quickening swell layer thickness increases.
In addition, the present invention also cleans surface of plastic products earlier, smooth, bright, removes the greasy dirt and the impurity of surface of plastic products, guarantees that reaching of frosting is clean, and then is soaked in H
2CrO
4Carry out the ultrasonic activation plastic-substrates in the acidic solution.
Embodiment
Embodiment 1:
1, with 1g H
2CrO
4Be dissolved in the 1L water, form 1g/L H
2CrO
4Acidic solution.
2, surface of plastic products is cleaned, smooth, bright, remove the greasy dirt and the impurity of surface of plastic products, guarantee the frosting cleaning.
3, frosting to be activated is immersed in above-mentioned H
2CrO
4In the acidic solution, employing power is 200W～1000W, and frequency is 80～250kHz ultrasonic wave, after ultrasonic 20～30 minutes, forms the thick swell layer of 0.005～0.1mm at frosting, takes out plastics.
4, with after deionized water immersion, the ultrasonic cleaning plastics, carry out sensitization and plating.
Embodiment 2:
1, uses H
2CrO
4Preparing face concentration with water is the H of 5g/L
2CrO
4Acidic solution.
2, surface of plastic products is cleaned, smooth, bright, remove the greasy dirt and the impurity of surface of plastic products.
3, frosting to be activated is immersed in H
2CrO
4In the acidic solution, adopting 200W～1000W, frequency is 80～250kHz ultrasonic echography 20～30 minutes, forms the thick swell layer of 0.005～0.1mm at frosting, takes out plastics.
4, spend successively rare 0.01mol/L NaOH solution, ionized water soak, ultrasonic, clean after, carry out sensitization and plating.
Through above activating process, carry out sensitization again and electroplate the product that obtains, the sticking power of frosting matrix and coating is higher, pervious course thickness can reach 0.005～0.1mm, and the frosting layer is embedded in the darker metal level of 0.005～0.1mm, makes metal level and plastic-substrates tightly adhere to each other, phenomenons such as back coating takes place to loosen, bubbling, decortication have been avoided electroplating, the surface durability of product is prolonged, and smooth, have the texture of metal.
Claims (3)
1, the activation method of plastic-substrates during plastic surface galvanizing is characterized in that frosting to be activated is immersed in 1～5g/L H
2CrO
4In the acidic solution, ultrasonic 20～30 minutes activation plastic-substrates form the thick swell layer of 0.005～0.1mm at frosting.
The activation method of plastic-substrates during 2, according to the described plastic surface galvanizing of claim 1 is characterized in that described ultrasonic power is that 200W～1000W, frequency are 80～250kHz.
The activation method of plastic-substrates during 3, according to the described plastic surface galvanizing of claim 1 is characterized in that earlier surface of plastic products being cleaned, smooth, bright, removes the greasy dirt and the impurity of surface of plastic products, and then is soaked in H
2CrO
4Carry out the ultrasonic activation plastic-substrates in the acidic solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100401002A CN1880515B (en) | 2006-04-28 | 2006-04-28 | Activation method for plastic substrate during electroplating of plastic surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100401002A CN1880515B (en) | 2006-04-28 | 2006-04-28 | Activation method for plastic substrate during electroplating of plastic surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1880515A true CN1880515A (en) | 2006-12-20 |
| CN1880515B CN1880515B (en) | 2010-12-08 |
Family
ID=37518862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100401002A Expired - Fee Related CN1880515B (en) | 2006-04-28 | 2006-04-28 | Activation method for plastic substrate during electroplating of plastic surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1880515B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239119A (en) * | 2015-11-09 | 2016-01-13 | 芜湖华宇彩晶科技有限公司 | Plastic electroplating spraying method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1157340A (en) * | 1996-02-13 | 1997-08-20 | 云南大学 | New process for ultrasonic coarsing of ABS plastics before electroplating |
-
2006
- 2006-04-28 CN CN2006100401002A patent/CN1880515B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239119A (en) * | 2015-11-09 | 2016-01-13 | 芜湖华宇彩晶科技有限公司 | Plastic electroplating spraying method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1880515B (en) | 2010-12-08 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuhan Champion Electronic Co., Ltd. Assignor: Yangzhou University Contract record no.: 2012320000875 Denomination of invention: Activation method for plastic substrate during electroplating of plastic surface Granted publication date: 20101208 License type: Exclusive License Open date: 20061220 Record date: 20120709 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20130428 |