Frosting coating and preparation method thereof

A coating and frosting technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of film-forming mechanical properties, poor water resistance and solvent resistance, etc., and achieve good film-forming ability, uniform and fine grain feeling, and good hand feeling Effect

Inactive Publication Date: 2015-09-09
HEFEI JIKE NEW MATERIALS
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Water-based polyurethane emulsion has the advantages of adjustable hardness, excellent adhesion and flexibility, and is widely used in the fields of coatings, adhesives and inks. At present, the relatively mature anionic water-based polyurethane is synthesized mainly th

Method used

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Embodiment 1

[0034] A frosted coating, characterized in that the coating is composed of component A and component B with a mass ratio of 1:1.8, and the component A is composed of the following raw materials in parts by weight:

[0035] Hexamethylene-1,6-diisocyanate 15, polyvinylpyrrolidone 7, aluminum ammonium sulfate 1, glass powder 3, dimethyl succinate 5, calcium propionate 1, sodium hypochlorite 0.02, ethyl cellulose 3, isofor Alone diisocyanate 67, polycarbonate diol 100, polysilsesquioxane 1.6, 1,4-butanediol 1.3, azobisisobutyronitrile 0.9, stannous octoate 0.17, fluoroboric acid 0.13, castor oil 16 ;

[0036] Described B component is made up of the raw material of following parts by weight:

[0037] Dimethylthiotoluenediamine 2, Mannitol 1, Phytate 3, Light Calcium Carbonate 5, Antioxidant 1010 0.4.

[0038] A preparation method for frosted paint, comprising the following steps:

[0039] Wherein the preparation method of component A comprises the following steps:

[0040] (1) ...

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Abstract

The invention discloses a frosting coating. Firstly, a castor oil is used for cross-linking a prepolymer: the multifunctional-group structure in the castor oil can cross-link a polymer to a certain extent, the cross-linking degree of the polymer is increased, the interaction force among molecular chains is increased, molecular chain movement is resisted, water molecules cannot enter the molecular chains to swell the polymer, and the water absorption of an adhesive film is decreased; meanwhile, the castor oil is a triglyceride of fatty acid, due to long nonpolar fatty acid chains in molecules, the adhesive film has good hydrophobicity, and the water absorption is further reduced; meanwhile, ester groups in the castor oil have higher cohesive energy and can improve the tensile strength of the adhesive film; ethyl cellulose has better heat resistance and thermal plasticity, has good compatibility with polyurethane and can improve the comprehensive property of the prepolymer; then the polyurethane prepolymer is mixed with polysilsesquioxane for modification.

Description

technical field [0001] The invention relates to a paint, in particular to a frosted paint and a preparation method thereof. Background technique [0002] Water-based polyurethane emulsion has the advantages of adjustable hardness, excellent adhesion and flexibility, and is widely used in the fields of coatings, adhesives and inks. At present, the relatively mature anionic water-based polyurethane is synthesized mainly through the synthesis of polyurethane molecular chains. The hydrophilic group is introduced into the segment and internally emulsified. After film formation, it has certain hygroscopicity, and the mechanical properties, water resistance and solvent resistance of film formation are poor. Usually, cross-linking modification and compound modification can be used to improve the water resistance and mechanical properties of the film; [0003] In order to improve the mechanical properties, water resistance and other properties of polyurethane, while reducing product...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12
CPCC09D175/04C08L2205/035C09D7/40C09D7/61C08L1/28C08L83/04C08L39/06C08K3/40
Inventor 徐明
Owner HEFEI JIKE NEW MATERIALS
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