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Composite protective film with silane transition layer, preparation method thereof and product

A technology of transition layer and protective film, which is applied in the direction of coating, liquid coating device on the surface, surface pretreatment, etc. It can solve the problem of poor selectivity of raw material monomers, difficulty in meeting the protection requirements of electronic products, and affecting the protection of electronic products in the film layer Performance and other issues, to achieve the effect of low preparation temperature and good protection performance

Active Publication Date: 2020-08-25
JIANGSU FAVORED NANOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, similar to the liquid phase method, the film thickness of the vapor-deposited parylene coating needs to be tens of microns. If the film thickness is small, it will affect the protective performance of the film layer on electronic products.
[0005] Furthermore, the liquid phase preparation method or the method of evaporating parylene coating is used to prepare the film layer, which has poor selectivity for raw material monomers, and most of the prepared films are single films, which are difficult to meet the needs of electrons in different environments. Product Protection Requirements

Method used

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  • Composite protective film with silane transition layer, preparation method thereof and product

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preparation example Construction

[0057] According to an embodiment of the present invention, the preparation method includes the following steps:

[0058] 1) Substrate preparation

[0059] Before performing chemical vapor deposition on the substrate, the substrate needs to be cleaned. Dust, moisture or grease on the surface of the substrate will have an adverse effect on the deposition effect. The substrate can be cleaned with acetone or isopropanol first, and then dried in a drying oven.

[0060] 2) Prepare the silane transition layer by chemical vapor deposition on the substrate

[0061] (1) Place the substrate in the reaction chamber of the reaction device, evacuate to 10-200 mTorr, and feed auxiliary gas, such as He, Ar, O 2 or a mixture of several gases.

[0062] (2) Feed silane raw material or monomer vapor doped with corrosion inhibitor into the reaction chamber, and start plasma discharge, and perform chemical vapor deposition to form the silane transition layer on the surface of the substrate.

...

Embodiment 1

[0087] In the coating preparation method of a kind of silane composite membrane as self-repairing transition layer among the present invention, through following steps:

[0088] (1) Place the circuit board (6cm×3cm), Fe sheet (30*20*2mm), Mg sheet (30*20*2mm) in the 500L plasma reaction device, and continuously Evacuate to achieve a vacuum of 200 mTorr and a chamber temperature of 30 °C.

[0089] (2) Oxygen is introduced, the flow rate is 120 sccm, and the radio frequency plasma discharge is turned on to pretreat the substrate. The discharge power in the pretreatment stage is 120 W, and the discharge lasts for 60 s.

[0090] (3) 5% lanthanum nitrate (inorganic slow-release agent) (dissolved in isopropanol (organic solvent)) and hexamethylcyclotrisiloxane (hydrophobic silane) and ureidopropyltrimethyl trimethylate are simultaneously passed through the Y-shaped tee Oxysilane (hydrophilic silane) (1:1), chemical vapor deposition on the surface of the substrate to prepare the tra...

Embodiment 2

[0094] In the coating preparation method of a kind of silane composite membrane as self-repairing transition layer among the present invention, through following steps:

[0095] (1) Place the circuit board (6cm×3cm), Fe sheet (30*20*2mm), Mg sheet (30*20*2mm) in the 500L plasma reaction device, and continuously Evacuate to achieve a vacuum of 50 mTorr and a chamber temperature of 45 °C.

[0096] (2) Introduce argon gas with a flow rate of 5 sccm, and turn on microwave discharge to pretreat the substrate. The discharge power in this pretreatment stage is 500W, and the discharge lasts for 200s.

[0097] (3) 5% cerium nitrate (dissolved in water) (inorganic corrosion inhibitor) and octamethylcyclotetrasiloxane (hydrophobic silane) are passed through the Y-shaped tee at the same time, and the transition layer is prepared by chemical vapor deposition on the surface of the substrate . During the preparation of the transition layer, the flow rates of the two monomers were 100 μL / mi...

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Abstract

The invention discloses a composite protective film with a silane transition layer, a preparation method thereof and a product. The composite protective film with the silane transition layer comprisesthe silane transition layer and a coating, wherein the silane transition layer is formed by plasma chemical vapor deposition of organosilane. After forming the silane transition layer, the coating isformed by a first monomer and a second monomer through the plasma chemical vapor deposition on the silane transition layer, wherein the first monomer is selected from one or two of a low dipole moment organic monomer and a polyfunctionality acrylate chemical compound, and the second monomer is a fluorine carbonate chemical compound.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to a composite protective film layer with a silane transition layer, a preparation method and a product thereof. Background technique [0002] Three defenses, that is, anti-mold, anti-humidity and anti-salt spray, are issues that need to be paid attention to during the storage, transportation and use of electronic equipment. Without safeguards in place, electronic equipment can fail due to a short circuit caused by any one of these problems. [0003] At present, using a protective film layer to protect electronic products is an effective measure to deal with the three-defense problem. The protective film layer is prepared on the surface of electronic products by a specific method, usually in two ways, one is a liquid phase preparation method, and the other is a gas phase preparation method. The former method forms a dense organic coating on the surface of electronic prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/00B05D7/00B05D7/24B05D7/14C09D4/02B05D3/14
CPCB05D1/62B05D1/60B05D7/00B05D7/24B05D7/14C09D4/00B05D7/54B05D3/142B05D2252/00B05D2203/35B05D2203/30
Inventor 宗坚蔡泉源蒋金海
Owner JIANGSU FAVORED NANOTECHNOLOGY CO LTD
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