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Preparing method of waterproof electric-breakdown-resisting coating

A technology of resistance to electrical breakdown and coating, applied in the field of ion chemical vapor deposition, can solve the problems of harsh coating preparation conditions, high cost of raw materials, signal blocking, etc. Electric breakdown performance, the effect of improving the resistance to underwater energization time

Active Publication Date: 2017-08-18
JIANGSU FAVORED NANOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of raw materials for the preparation of Parylene coating is high, the coating preparation conditions are harsh (high temperature, high vacuum requirements), and the film formation rate is low, so it is difficult to be widely used
In addition, thick coatings can easily lead to problems such as poor heat dissipation, signal blocking, and increased coating defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A method for preparing a waterproof and breakdown-resistant coating, characterized in that it comprises the following steps:

[0058] (1) Place the base material in the reaction chamber of the plasma chamber, continuously evacuate the reaction chamber, pump the vacuum in the reaction chamber to 10 millitorr, and feed inert gas;

[0059] In step (1), the substrate is a solid material, and the solid material is an electronic component-circuit board.

[0060] And after the waterproof and electric breakdown resistant coating is prepared on the surface of the substrate, any interface thereof can be exposed to the environment described in the international industrial waterproof grade IPX1.

[0061] In step (1), the volume of the plasma chamber is 50 L, and the temperature of the plasma chamber is controlled at 30° C.; the flow rate of the inert gas is 5 sccm, and the inert gas is argon.

[0062] (2) Introduce the monomer vapor to a vacuum degree of 30 millitorr, turn on the ...

Embodiment 2

[0077] The basic process steps of this embodiment are the same as those of Example 1, and the different process parameters are as follows:

[0078] 1. In step (1), the vacuum in the reaction chamber is pumped to 40 millitorr, and an inert gas is introduced;

[0079] The base material is a solid material, and the solid material is an electrical component—a TV casing, and any interface of the base material can be exposed to the environment described in the international industrial waterproof grade IPX3 after the waterproof and electric breakdown resistant coating is prepared on the surface of the base material. .

[0080] The volume of the plasma chamber is 260L, and the temperature of the plasma chamber is controlled at 40° C.; the flow rate of the inert gas is 60 sccm, and the inert gas is helium.

[0081] 2. In step (2), feed the monomer steam to a vacuum of 80 mTorr, and start the plasma discharge;

[0082] The introduction of the monomer vapor is to atomize and volatilize...

Embodiment 3

[0094] The basic process steps of this embodiment are the same as those of Example 1, and the different process parameters are as follows:

[0095] 1. In step (1), the vacuum in the reaction chamber is pumped to 100 millitorr, and an inert gas is introduced;

[0096] The base material is a solid material, and the solid material is an electronic component - a mobile phone, and any interface of the base material can be exposed to the environment described in the international industrial waterproof grade standard IPX4 after the waterproof and electric breakdown resistant coating is prepared on the surface of the base material.

[0097] The volume of the plasma chamber is 380 L, and the temperature of the plasma chamber is controlled at 45° C.; the flow rate of the inert gas is 130 sccm, and the inert gas is a mixture of helium and argon.

[0098] 2. In step (2), feed the monomer steam to a vacuum of 130 mTorr, and start the plasma discharge;

[0099] The introduction of the monome...

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Abstract

The invention discloses a preparing method of a waterproof electric-breakdown-resisting coating, and belongs to the technical field of plasma chemical vapor phase deposition. According to the method, a base material is placed in a reaction cavity, continuous vacuum pumping is carried out, and inert gases or nitrogen is led in; monomer steam is led to start plasma discharge, the waterproof electric-breakdown-resisting coating is prepared on the surface of the base material; the monomer steam is a mixture of at least one kind of single-functional unsaturated fluorocarbon resin and at least one kind of polyfunctionality unsaturated hydrocarbon derivatives, wherein the mass percent of the polyfunctionality unsaturated hydrocarbon derivatives in the monomer steam ranges from 30% to 50%. Extra cross-linked points are led in by introducing of other monomer components with polyfunctional group cross-linked structures to form a cross-linked structure; plasma is broken by active base groups with high energy in the monomer components to form active points, the introduced extra active points are subject to cross-linking polymerization under the plasma environment to form a compact net-shaped structure, hydrophobicity of a thin film is ensured, and the property of corrosion resistance and underwater powering resistance of an electronic product is improved.

Description

technical field [0001] The invention belongs to the technical field of plasma chemical vapor deposition, and in particular relates to a preparation method of an electric breakdown-resistant coating. Background technique [0002] Moisture is the most prevalent and most destructive factor on PCB (Printed Board Assembly) circuit boards. Excessive moisture will greatly reduce the insulation resistance between conductors, accelerate high-speed decomposition, reduce Q value, and corrode conductors. However, electronic and electrical equipment are more prone to short circuit and corrosion short circuit and fail when used in splashing water, splashing water, immersion in water and underwater environment. [0003] Polymer coatings are often used for the protection of material surfaces due to their economical, easy-to-coat, and wide-ranging applications, which can endow materials with good physical and chemical durability. Based on the barrier properties of the polymer coating, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C16/513C23C16/517C23C16/448C09D4/02
CPCC23C16/448C23C16/513C23C16/517C09D4/00B05D1/62C23C16/511C23C16/515H05K3/282B05D1/60B05D2502/005B05D5/08H05K2203/1338H05K2203/095C23C16/505
Inventor 宗坚
Owner JIANGSU FAVORED NANOTECHNOLOGY CO LTD
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