A kind of primer and preparation method thereof

A primer and paint technology, applied in the field of primer and its preparation, can solve the problems of low bonding strength, complicated surface metallization process, time-consuming and labor-intensive, etc., and achieve the effect of strong adhesion

Active Publication Date: 2017-04-19
广东顺德三阳化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bonding force between these materials and the covering metal layer on the surface is very weak, and the influence of the outer surface is more prominent, that is to say, the bonding strength between these materials and the metal covering layer is low, in order to improve the bonding between the substrate and the coating Before the non-metallic surface is metallized, the surface must be treated to obtain the ideal surface formation state and increase its wettability. In addition, some processes that endow the surface of the non-metallic material with catalytic activity will affect its metallization. Cohesion of layers
[0005] Since the existing surface metallization process needs to go through pre-treatment processes, such as sensitization, activation and other steps, the surface metallization process is complicated, time-consuming and labor-intensive, and will pollute the environment

Method used

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preparation example Construction

[0036] The present invention also provides a preparation method for the above-mentioned primer, comprising: mixing 75-98 parts by weight of paint, 2-25 parts by weight of metal reducing powder and 0.1-10 parts by weight of reducing auxiliary agent, and stirring to obtain the primer .

[0037] Wherein, the paint, the metal reducing powder and the reducing auxiliary agent are all the same as above, and will not be repeated here.

[0038] After mixing the paint, the metal reduction powder and the reducing auxiliary agent, the mixing time is preferably 1-5 hours, more preferably 1-4 hours, and still more preferably 1-2 hours.

[0039] According to the present invention, it is preferable to add 0.02-5 parts by weight of organic acid metal salt, and then stir. The organic acid metal salt is the same as that described above and will not be repeated here.

Embodiment 1

[0043] 1.1 Mix 97 kg of polyester varnish, 0.05 kg of dibutyltin dilaurate, 2.7 kg of aluminum silver paste, 0.2 kg of stannous chloride and 0.05 kg of heteropoly acid salt, stir and disperse for 2 hours to obtain a primer.

[0044] 1.2 Spray the primer obtained in 1.1 on the plastic surface, cure and dry to obtain a paint layer.

[0045] 1.3 On the surface of the paint layer, spray the water-based copper metallic paint of component A and the water-based metallic paint of component B at the same time through the double-gun spraying equipment to form a copper mirror layer on the surface of the paint layer; component A water-based copper metallic paint: 6g / L sulfuric acid Copper, 35g / L potassium sodium tartrate, 1g / L potassium hydroxide, 0.4g / L heteropoly acid salt (glutamic acid type heteropoly acid salt), 0.1g / L ethanolamine and water; component B water-based metallic paint: 15g / L sodium borohydride, 0.5g / L sodium hydroxide and water; the volume ratio of component A water-base...

Embodiment 2

[0051] 2.1 Mix 97 kg of polyester varnish, 2.7 kg of reduced iron powder, 0.25 kg of meglumine and 0.05 kg of heteropoly acid salt, stir and disperse for 2 hours to obtain a primer.

[0052] 2.2 Spray the primer in 2.1 on the plastic surface, cure and dry to obtain a paint layer.

[0053] 2.3 On the surface of the paint layer, spray the water-based nickel metallic paint of component A and the water-based metallic paint of component B at the same time through double-gun spraying equipment, forming a nickel mirror layer on the surface of the paint layer; component A water-based nickel metallic paint: 35g / L sulfuric acid Nickel, 8g / L sodium citrate, 0.2g / L EDTA stabilizer and water; component B water-based metallic paint: 25g / L aqueous solution of sodium hypophosphite; combine component A water-based nickel metallic paint with component B water-based metallic paint The volume ratio is 1:1.5.

[0054] 2.4 Clean the reaction residual liquid on the surface of the nickel mirror laye...

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Abstract

The invention provides a primer and a preparation method thereof. The primer comprises the following components in parts by weight: 75-98 parts of oil paint, 2-25 parts of metal reduced powder and 0.1-10 parts of reductive auxiliary. Compared with the prior art, the primer provided by the invention has the advantages that the primer contains metal reduced powder, the metal reduced powder can also be used as an initiator when a metal layer is formed on the surface of the primer, and metal ions in chemical plating, electroplating or waterborne metal primer are adsorbed on the surface by means of the reducibility of the metal reduced powder and are reduced to from metal so as to form an active center, so that the metal reduced powder plays a role in catalyzing the reduction of the metal ions, and a metal coating with a certain thickness is obtained by means of the reduction effect of metal; meanwhile, the primer contains metal reduced powder and reductive auxiliary, and the adsorption force between the metal layer and a primer layer can be stronger by sufficiently utilizing metal bonds, covalent bonds, a Van der Waals force and the like, so that pretreatment processes such as sensitization, activation and the like are not needed.

Description

technical field [0001] The invention belongs to the technical field of surface treatment, in particular to a primer and a preparation method thereof. Background technique [0002] Surface metallization of non-metallic materials is to use a certain surface treatment process to form a metal layer on the non-metallic surface, so as to achieve the purpose of wear resistance, anti-corrosion and decoration, and to endow non-metallic materials with some new performance. Surface metallization of non-metallic materials is an important research field for the development of new materials. For example, the development and research of some superhard materials will use the technology of surface metallization of non-metallic materials. [0003] Surface metallization of non-metallic materials has a long history in our country. Since the invention of alchemy in ancient my country, some skilled craftsmen have known to make gold into thin gold foil and paste it on non-metallic surfaces to mak...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/38C09D163/00C09D161/20C09D133/00C09D167/00C09D175/04C09D167/06
Inventor 任国华任玉杰
Owner 广东顺德三阳化学有限公司
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