Preparation method of ultraviolet cured silica sol modified aqueous urethane acrylate dispersoid

A urethane acrylate and acrylate technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems that the mechanical properties of the coating surface are not significantly improved, lack of interaction, and the modification process is cumbersome, and the reaction is easy to achieve. The effect of control, simple process and wide range of emulsion particle size
CN101747487AInactive Publication Date: 2010-06-23JIANGNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIANGNAN UNIV
Publication Date
2010-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

A preparation method of ultraviolet cured silica sol modified aqueous urethane acrylate dispersoid belongs to the technical field of ultraviolet cured aqueous paint. The preparation method of the invention comprises: mainly using diisocyanate compounds, polyether polyol, polyhydroxycarboxylic acid and hydroxyl acrylate monomer as main raw materials to prepare a urethane acrylate prepolymer through an acetone process; adding amine compounds and water for salt formation and emulsification, introducing aqueous silicon dioxide sol in the emulsification process to obtain the ultraviolet cured silica sol modified aqueous urethane acrylate dispersoid. The invention introduces the aqueous nanometer-sized silicon dioxide in situ in the synthesis of the aqueous urethane acrylate dispersoid to obtain the silica sol modified aqueous urethane acrylate dispersoid. The introduction of the inorganic nanometer-sized silicon dioxide obviously improves the mechanical property of a light-cured coating. The dispersoid can be widely applied to the surface coating field of woodware, metal and plastic rubber and the like with high scratch resistance and wearing resistance.
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Description

technical field

[0001] The invention relates to a water-based polyurethane resin modified by inorganic nano-silica particles for a novel water-based coating, and mainly relates to a preparation method of a green and environment-friendly UV-curable silica sol-modified water-based polyurethane acrylate dispersion. The invention belongs to the technical field of ultraviolet curing water-based paint. Background technique

[0002] At present, water-based coatings have become the main direction of the development of environmentally friendly coatings, especially the technology of water-based ultraviolet (UV) curing coatings has attracted increasing attention because of its compliance with the concepts of environmental protection, energy saving, and clean production. In addition, water-based light-curing coatings combine many advantages of both traditional UV curing technology and water-based coating technology, and become a new coating technology with great development and applicat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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