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Super-wear-resistant and low-temperature-resistant glassy-state hydrophobic coating, preparation method of coating and coating

A hydrophobic coating and hydrophobic coating technology, applied in the field of coatings, can solve the problems of sand and stone wear resistance, low temperature resistance and pollution resistance, self-cleaning, aging resistance, acid and alkali resistance, etc., so as to improve the ability of low temperature environment and sand resistance. Stone wear and impact ability is strong, the effect of small wear volume

Pending Publication Date: 2022-07-22
江苏易米新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing coatings used on the protective film cannot achieve the protective effects of sandstone wear resistance, low temperature resistance, pollution resistance, self-cleaning, aging resistance, and acid and alkali resistance.

Method used

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  • Super-wear-resistant and low-temperature-resistant glassy-state hydrophobic coating, preparation method of coating and coating
  • Super-wear-resistant and low-temperature-resistant glassy-state hydrophobic coating, preparation method of coating and coating
  • Super-wear-resistant and low-temperature-resistant glassy-state hydrophobic coating, preparation method of coating and coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this embodiment, the initiator is DuPont AIBN azobisisobutyronitrile (V60 / VAZO64); PDES-ran-PTFPMS is a fluorine-containing copolysiloxane prepared by phosphazene alkali-catalyzed ring-opening polymerization; the curing agent is Covestro N3600; UV absorber is Tinuvin 622 from BASF; diluent is xylene, ethyl acetate, n-butyl acetate, and propylene glycol monomethyl ether mixed in a mass ratio of 4:4:1:1.

[0029] The preparation method of the ultra-wear-resistant and low-temperature resistant glassy hydrophobic coating comprises the following steps:

[0030] Step S1, accurately weigh 2g initiator, 32g methacryloxysilane, 38g hydroxyethyl methacrylate and 3g diluent and place them in a three-necked flask, feed nitrogen, stir, and react at 80°C 5h, due to the high viscosity of the reaction system, 2g of diluent was added, and the reaction was continued for 3h to obtain a modified prepolymer to obtain a modified prepolymer.

[0031] Step S2-1, using an ice-water bath to ...

Embodiment 2

[0037] In this embodiment, the initiator is DuPont AIBN azobisisobutyronitrile (V60 / VAZO64); PDES-ran-PTFPMS is a fluorine-containing copolysiloxane prepared by phosphazene alkali-catalyzed ring-opening polymerization; the curing agent is Covestro N3390; UV absorber is Tinuvin 622 from BASF; diluent is ethyl acetate.

[0038] The preparation method of the ultra-wear-resistant and low-temperature resistant glassy hydrophobic coating comprises the following steps:

[0039] Step S1, accurately weigh 2 g of initiator, 25 g of methacryloyloxysilane, 32 g of hydroxyethyl methacrylate and 3 g of diluent, place them in a three-necked flask, feed nitrogen, and react at 80° C. for 5.5 h to obtain a modified prepolymer.

[0040] In step S2-1, using an ice-water bath, the temperature of the modified prepolymer prepared in step S1 is lowered to 18° C., and then the diluent is poured into it to adjust the solid content to 20% (determine by testing whether the solid content reaches 20%) , ...

Embodiment 3

[0046] In this embodiment, the initiator is Huaxiang Kejie azobisisoheptanenitrile 4419-11-8ABVN V65; PDES-ran-PTFPMS is a fluorine-containing copolysiloxane prepared by phosphazene alkali-catalyzed ring-opening polymerization; the curing agent It is Covestro N3600; the UV absorber is BASF's Tinuvin400; the diluent is xylene.

[0047] The preparation method of the ultra-wear-resistant and low-temperature resistant glassy hydrophobic coating comprises the following steps:

[0048] Step S1, accurately weigh 3g of initiator, 35g of methacryloxysilane, 30g of hydroxyethyl methacrylate and 3g of diluent, place them in a three-necked flask, pass nitrogen gas, and react at 82°C for 5h , due to the high viscosity of the reaction system, 1 g of diluent was added, and the reaction was continued for 3.5 h to obtain a modified prepolymer.

[0049] In step S2-1, using an ice-water bath, the temperature of the modified prepolymer prepared in step S1 is lowered to 18° C., and then the dilue...

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Abstract

The invention provides a super wear-resistant and low-temperature-resistant glassy hydrophobic coating, a preparation method of the coating and the coating. The preparation method of the coating comprises the following steps: step 1, taking methylacryloyloxysilane and hydroxyethyl methylacrylate as raw materials, and reacting in the presence of an initiator and a diluent to generate a modified prepolymer; and 2, dissolving the prepared modified prepolymer in a diluent, then mixing with PDES-ran-PTFPMS fluorine-containing cosiloxane, an isocyanate curing agent and an ultraviolet absorbent, preparing the super wear-resistant and low-temperature-resistant glassy hydrophobic coating by adopting a solution polycondensation method, coating the surface of an object with the coating, and curing to form a film to form a coating, thereby obtaining the super wear-resistant and low-temperature-resistant glassy hydrophobic coating. The coating prepared by the invention has the characteristics of super wear resistance, low temperature resistance and hydrophobicity, the wear of the coating under severe conditions can be improved, the low-temperature environment resistance is improved, the adhesion time of an adhered corrosive medium or impurities capable of causing the coating to be scratched and damaged is shortened, and the comprehensive protection effect and the service life of the coating are prolonged.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to an ultra-wear-resistant and low-temperature resistant glassy hydrophobic coating, a preparation method of the coating and the coating. Background technique [0002] In the fields of automobile transportation, aerospace, electronic devices, outdoor sports, wind power energy, medical equipment, construction and other fields, protective films for temporary protection or long-term protection are used. The performance of the protective film plays a decisive role in the surface protection of the substrate. Generally, the protective film materials include PET, PVC, PE, PI, PTFE, PP, PU leather, etc. With the continuous expansion of the application field of protective film, in some working conditions such as windy sand, low temperature, serious air pollution, high salt spray, etc., it is necessary to apply a functional coating on the surface of the protective film material t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/32C08J7/046C08L75/04
CPCC09D175/04C09D5/32C08J7/0427C08J7/046C08J2375/04C08J2475/04C08L67/00C08K5/3492
Inventor 李亚兵于锦
Owner 江苏易米新材料科技有限公司
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