Preparation metod of modified ultroviolet light solidified wooden articles paint by in-situ method

Abstract

This invention relates to preparation method of in situ modified ultraviolet light curing carpentry dope. It selects one or more kinds of acrylate resin kind reactive diluents that has lower viscosity as in situ reactive basal body, adopts silicic acid ester as precursor, takes silane coupling agent with amino amino as catalyzer and surface conditioning agent, one-step complete preparation and surface treatment of nanometer materials, gain ultraviolet light curing dope. This film coating is transparence, rigidity reach 6H, adhesion reach 98%, wearability 1.7 mg . nanometer particle distribute uniformity in dope, particle size is between 60 to 80 nm, efficiently solve problem of nanometer particle agglomeration, advance wearability and rigidity and so on performance of film coating.

Description

technical field [0001] The invention relates to a preparation method of a nano-modified ultraviolet coating, in particular to a preparation method of an ultraviolet-cured wood coating modified by an in-situ method. technical background [0002] In recent years, UV-curable coatings have achieved rapid development at home and abroad. UV-curable coatings are favored by the market due to their advantages of no pollution, high efficiency, and energy saving. UV-curable coatings are widely used in many fields such as wood, ink, adhesives, printing plates, electronics industry, etc. At present, domestic UV-curable coatings are widely used in wood, but the existing technology cannot fully meet the needs of the market, such as coating The wear resistance and hardness of the film cannot meet the market's requirements for coatings for substrates such as floors. Scientists and technicians are constantly exploring the modification of UV-curable coatings. [0003] For the modification of...

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Problems solved by technology

[0004] However, as inorganic powder nanomaterials, although the surface has been modified to a certain extent, its surface still contains a large number of hydrophilic groups, has a large specific surface energy and surface activity, and is very difficult to add to organic coating systems. Mutual self-aggregation easily occurs to form aggregates and agglomerates, which affects the performance of the coating to a certain extent. CN200510050745.X reports using the sol-gel method to add hydrochloric acid and absolute ethanol to the UV-curable coating. Stir well to make the system uniform, then add organosilicon monomer to hydrolyze the organosilicon monomer under acidic conditions to obtain high hardness, scratch resistance and good stability, suitable for UV-curable coatings on the surface of optical discs , this technology has obtained a yellowish transparent viscous liquid with an average particle size of more than 100 nanometers, which will affect the absorption of ultraviolet light to a certain extent, and at the same time, a particle size larger than 100 nanometers is not a nanomaterial in the true sense

All the above-mentioned coating modification methods still have relatively high production costs, complex process conditions, easy aggregation of nanomaterials in the process of adding coating substrates, and deficiencies in the dispersion and stability of nanomaterials in substrates. improvement

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