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Polyurethane nanometer coating layer and preparation method thereof

A nano-coating, polyurethane technology, applied in the direction of polyurea/polyurethane coatings, coatings, metal material coating processes, etc., can solve the problems of lack and low surface adhesion of the substrate, and achieve less monomer usage, The effect of improved chemical resistance and shorter process time

Active Publication Date: 2019-01-25
JIANGSU FAVORED NANOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

CN201710049153 "A Preparation Method of Gradient Incremental Structure Liquid-Repellent Coating" realizes the effective control of the hydrophobicity of the material surface and long-term resistance to underwater electrification by constructing a liquid-proof coating with gradient changes in composition, but due to the lack of Similar to the strong polar groups of polyurethane, it has low adhesion to the surface of the substrate

Method used

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  • Polyurethane nanometer coating layer and preparation method thereof
  • Polyurethane nanometer coating layer and preparation method thereof
  • Polyurethane nanometer coating layer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of preparation method of polyurethane nano-coating:

[0044] (1) A metal iron block of 5cm×5cm is placed in a 1000L plasma vacuum reaction chamber, and the reaction chamber is continuously evacuated to make the vacuum degree reach 10 mTorr.

[0045] (2) Introduce helium gas with a flow rate of 300 sccm, turn on the radio frequency plasma discharge to pretreat the metal iron block (that is, turn on the radio frequency pretreatment plasma discharge), the discharge power of this pretreatment stage is 50W, and the discharge lasts for 1000s .

[0046] (3) Next, the monomer 1a and the monomer 2a are introduced into the substrate surface for chemical vapor deposition to prepare a nano-coating, and after completion, the monomer 3a is introduced to prepare a composite coating. During the coating preparation process, the flow rates of monomer 1a and monomer 2a were both 100 μL / min, and the infusion time was 1000 s; after the end, monomer 3a was infused at a flow rate of 2...

Embodiment 2

[0053] A kind of preparation method of polyurethane nano-coating:

[0054] (1) Place the main board of the mobile phone in a 1000L plasma vacuum reaction chamber, and continuously evacuate the reaction chamber to make the vacuum degree reach 20 millitorr.

[0055] (2) Feed helium, the flow rate is 100sccm, turn on the radio frequency plasma discharge to pretreat the mobile phone motherboard (that is, turn on the pretreatment plasma discharge of the radio frequency mode), the discharge power of this pretreatment stage is 20W, and the continuous discharge is 200s.

[0056] (3) Next, the monomer 1b and the monomer 2b are introduced to prepare a nano-coating by chemical vapor deposition on the surface of the substrate, and after completion, the monomer 3b is introduced to prepare a composite coating. During the coating preparation process, the flow rates of monomer 1 and monomer 2 were both 200 μL / min, and the feeding time was 1000 s; after the end, monomer 3 was fed, the flow rat...

Embodiment 3

[0060] A kind of preparation method of polyurethane nano-coating:

[0061] (1) Place a 8cm×5cm glass in a 5000L plasma vacuum reaction chamber, and continuously evacuate the reaction chamber to make the vacuum degree reach 40 mTorr.

[0062] (2) Introduce helium gas with a flow rate of 30 sccm, turn on the radio frequency plasma discharge to pretreat the glass (that is, turn on the radio frequency pretreatment plasma discharge), the discharge power of this pretreatment stage is 20W, and the discharge lasts for 500s.

[0063] (3) Next, the monomer 1c and the monomer 2c are introduced to prepare a nano-coating by chemical vapor deposition on the surface of the substrate, and after completion, the monomer 3c is introduced to prepare a composite coating.

[0064] During the coating preparation process, the flow rates of monomer 1c and monomer 2c were both 100 μL / min, and the feeding time was 2000 s; after the end, monomer 3c was fed, the flow rate was 150 μL / min, and the feeding t...

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Abstract

The invention provides a polyurethane nanometer coating layer and a preparation method thereof. The preparation method comprises the following steps of exposing a substrate in a monomer steam atmosphere, and performing plasma discharge to generate chemical reaction on the surface of the substrate to form a protective coating layer, wherein a monomer is of a specified structure and can be a mixtureof two or three monomers. The polyurethane nanometer coating layer prepared by the preparation method has the advantages that the cost is low, and the safe and environment-friendly effects are realized; the hardness, adhering force and chemical corrosion-resistant ability of the composite coating layer can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of plasma chemical vapor deposition, in particular to a polyurethane nano-coating and a preparation method thereof. Background technique [0002] As we all know, polyurethane is produced by the reaction of polyisocyanate and polyol, and its structural units contain more urethane bonds. The coating formed by polyurethane coating contains amide groups, ester groups, etc., and hydrogen bonds are easily formed between molecules, so its wear resistance and adhesion to the substrate are very good. By adjusting the molecular force structure, the stretchability, chemical corrosion resistance and fatigue resistance of the coating can be improved. CN103387648 A "Preparation Method of Hydrophilic Modified Polyisocyanate Curing Agent for Waterborne Polyurethane and Application of the Polyisocyanate Curing Agent" Polyethylene glycol, diisocyanate, catalyst and organic solvent are stirred and reacted in a reactor, and th...

Claims

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Application Information

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IPC IPC(8): C23C16/513C23C16/517C09D175/14
CPCC09D175/14C23C16/513C23C16/517
Inventor 宗坚
Owner JIANGSU FAVORED NANOTECHNOLOGY CO LTD