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Double-modified polysilazane, coating based on dual-modified polysilazane and preparation and use methods thereof

A technology of polysilazane and double modification, applied in the direction of coating, etc., can solve the problems of poor wear resistance and oil stain resistance of oleophobic, hydrophobic and stain resistant coating materials, and achieve excellent oil resistance and antifouling performance , excellent adhesion, the effect of improving hardness and wear resistance

Active Publication Date: 2022-01-21
NINGBO BULL ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there have been many researches on coatings with oleophobic and stain-resistant properties. For example, Chinese patent CN104212346B discloses a preparation method for an oleophobic, hydrophobic and stain-resistant coating material, which includes the following steps: 1) preparing the following mass ratio Points: resin 100-120; antifouling agent 1-2; defoamer 0.1-0.2; leveling agent 0.1-0.3; SiO2 nanoparticles 3-5; , antifouling agent, defoamer, leveling agent, and xylene solvent, and mix evenly with a high-speed mixer; 3) Add SiO2 nanoparticles and mix evenly with high-speed shearing; 4) Grind the paint slurry to a fineness of 10-20um; 5) Add diluent to adjust to a suitable viscosity to form an oleophobic, hydrophobic and stain-resistant coating material; the oleophobic, hydrophobic and stain-resistant coating material prepared by this invention patent has poor wear resistance
Another example of a modified polysilazane prepolymer disclosed in CN108329480B, a modified polysilazane coating and a method of use thereof, the modified polysilazane prepolymer is obtained by modifying perfluoropolyether; the modification The coating prepared by polysilazane prepolymer is friendly to the environment and has good adhesion to the surface of most substrates. The coating formed by coating and curing has high hardness, and has excellent hydrophobicity, oleophobicity and solvent resistance. , high temperature resistance, salt spray corrosion resistance, good flexibility, smoother surface, etc.; but the defect of this invention patent is that its resistance to oil stains is poor

Method used

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  • Double-modified polysilazane, coating based on dual-modified polysilazane and preparation and use methods thereof
  • Double-modified polysilazane, coating based on dual-modified polysilazane and preparation and use methods thereof
  • Double-modified polysilazane, coating based on dual-modified polysilazane and preparation and use methods thereof

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Embodiment 1

[0056] The coating based on double modified polysilazane of the present embodiment is made up of following components by weight: 20 parts of double modified polysilazanes, 78 parts of n-octane, 0.3 parts of Silok 350, 1.7 parts of 50wt % nano-alumina (average particle size is 20nm) butyl acetate dispersion.

[0057] Mix the above double-modified polysilazane, n-octane, Silok 350, and nano-alumina butyl acetate dispersion, and stir at 25°C for 5 minutes to prepare a coating based on double-modified polysilazane.

[0058] The above-mentioned double modified polysilazane is obtained by the following preparation method:

[0059] S1. Add 10 parts of vinyl perfluoropolyether, 140 parts of polysilazane, and 0.001 part of Custer catalyst into the reactor and mix evenly, and react at 80°C for 4 hours to prepare vinyl perfluoropolyether-modified polyvinyl perfluoropolyether. Silazane;

[0060] S2. Put 100 parts of polysilazane modified by vinyl perfluoropolyether and 3 parts of diethy...

Embodiment 2

[0070] The coating based on double-modified polysilazane of the present embodiment is made up of following components by weight: 25 parts of double-modified polysilazanes, 73 parts of propylene glycol methyl ether acetates, 0.2 parts of Silok 351, 1.8 Part of 50wt% nano-alumina (average particle diameter is 20nm) butyl acetate dispersion.

[0071] Mix the above double-modified polysilazane, propylene glycol methyl ether acetate, Silok 351, and nano-alumina butyl acetate dispersion, and stir at 30°C for 4 minutes to prepare a coating based on double-modified polysilazane .

[0072] The above-mentioned double modified polysilazane is obtained by the following preparation method:

[0073] S1. Add 4 parts of vinyl silicone oil, 100 parts of polysilazane, and 0.0006 parts of castor catalyst into the reactor and mix evenly, and react at 85° C. for 3 hours to prepare vinyl silicone oil-modified polysilazane;

[0074] S2. Put 100 parts of polysilazane modified by vinyl silicone oil ...

Embodiment 3

[0078] The coating based on the double-modified polysilazane of the present embodiment is made up of the following parts by weight: 20 parts of double-modified polysilazane, 40 parts of n-octane, 37 parts of propylene glycol methyl ether acetate, 0.3 part of dimethicone High Tego410, 2.7 parts of 50wt% nano-alumina (average particle size 20nm) butyl acetate dispersion.

[0079] Mix the above-mentioned double-modified polysilazane, n-octane, propylene glycol methyl ether acetate, Tego 410, and nano-alumina butyl acetate dispersion, and stir at 28°C for 6 minutes to prepare a double-modified polysilazane-based Alkane coatings.

[0080] The above-mentioned double modified polysilazane is obtained by the following preparation method:

[0081] S1. Add 6 parts of vinyl silicone oil, 160 parts of polysilazane, and 0.0012 parts of castor catalyst into the reactor and mix evenly, and react at 90°C for 2 hours to prepare vinyl silicone oil-modified polysilazane;

[0082] S2. Put 100 p...

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Abstract

The invention belongs to the technical field of coatings, and relates to a double-modified polysilazane, a coating based on the double-modified polysilazane and preparation and use methods thereof. The preparation method of the double-modified polysilazane provided by the invention comprises the following steps: S1, mixing vinyl perfluoropolyether or vinyl silicone oil with polysilazane, and reacting in the presence of a catalyst to prepare vinyl perfluoropolyether or vinyl silicone oil modified polysilazane; and S2, uniformly mixing the polysilazane modified by vinyl perfluoropolyether or vinyl silicone oil and ethylene glycol monoether carboxylic acid monomers, and reacting to obtain the double-modified polysilazane. The coating based on the prepared double-modified polysilazane has excellent oil resistance and antifouling performance, and oil stains applied to the surface of a workpiece are extremely easy to remove due to the characteristic of not easy to adhere or a small amount of adherency; and meanwhile, the coating layer prepared from the coating based on the double-modified polysilazane has excellent adhesive force, good hardness, wear resistance and the like.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a double-modified polysilazane, a coating based on the double-modified polysilazane and a preparation and use method thereof. Background technique [0002] In daily life, the cleaning of kitchen appliances, tableware, plastic products, etc. has always been a major pain point for users. Due to the high frequency of use, oil will easily adhere to the surface, seriously affecting its appearance and performance. Every cleaning takes a lot of time and energy. What is even more troublesome is that many stubborn oil stains (such as oil stains in range hoods) cannot be effectively cleaned, and damage to items is inevitable during the process. The cleaning of oil stains makes many people daunted by the kitchen. [0003] In the prior art, many methods are used to spray an oleophobic coating on the surface of the workpiece or to spray a coating added with an anti-graffiti additive. The con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/46C08G77/442C09D183/10C09D183/12C09D7/61
CPCC08G77/46C08G77/442C09D183/10C09D183/12C09D7/61C09D7/67C08K2201/011C08K2003/2227C08K3/22
Inventor 樊绍彦申会员何洋张志成秦强强
Owner NINGBO BULL ELECTRIC CO LTD
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