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Ultraviolet light solidifying coating and preparation method thereof

A technology of curing coatings and ultraviolet light, applied in the direction of coatings, etc., can solve the problems of poor comprehensive performance of wear resistance and flexibility, and achieve the effect of good wear resistance and flexibility

Inactive Publication Date: 2007-07-04
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcoming of poor comprehensive properties of wear resistance and flexibility of the paint film formed after the curing of the existing UV curing coatings, and to provide a UV curing coating with good wear resistance and flexibility at the same time. Light-curing coating and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023]According to the preparation method of the UV-curable coating provided by the present invention, the mixing of the main resin, diluent, photoinitiator, hydroxyacrylate and isocyanate can be carried out simultaneously or step by step, preferably, the photoinitiator and Part of the diluent is mixed to fully dissolve the photoinitiator to obtain a solution containing the photoinitiator; uniformly mix the main resin with part of the diluent to obtain a slurry containing the main resin; uniformly mix the hydroxy acrylate with part of the diluent to obtain a solution containing Hydroxyacrylate slurry; mix the isocyanate curing agent and part of the diluent evenly to obtain a slurry containing isocyanate curing agent; then cure the solution containing photoinitiator, the slurry containing the main resin, the slurry containing hydroxyacrylate, and the isocyanate The slurry of diluent is mixed well, and finally the remaining diluent is added and mixed well.

[0024] The mixing te...

Embodiment approach

[0026] According to a preferred embodiment of the method provided by the present invention, the preparation method includes (1) uniformly mixing the photoinitiator with part of the diluent; (2) uniformly mixing the main resin with part of the diluent; (3) mixing the hydroxy acrylate Mix uniformly with part of the diluent; (4) mix the isocyanate with part of the diluent; (5) mix the products obtained in steps (1), (2), (3) and (4); (6) continue to add or Do not add leveling agent, defoamer, dispersant, and mix evenly; (7) cool down, filter the obtained slurry; (8) continue to add the remaining diluent, mix evenly.

[0027] In the method provided by the invention, the amount of each substance should be such that in the paint, the content of the main resin is 20-80% by weight, preferably 40-70% by weight, based on the total weight of the paint; The content is 5-60% by weight, preferably 10-50% by weight; the content of photoinitiator is 1-15% by weight, preferably 2-8% by weight;...

Embodiment 1

[0032] This example illustrates the coating provided by the invention and its preparation method.

[0033] Prepare the coating as follows: (1) mix 3 grams of photoinitiator Irgacure184 with 2 grams of diluent and stir until fully dissolved; Resin) and 20 trifunctional aliphatic urethane acrylate resins (Eternal products, 6136B-90 resins) are mixed with 10 grams of diluent at 40 ° C, and stirred evenly, (3) 25 grams of hydroxyl acrylic resins (Nuplex products, 4702 resins) ) mixed with 5 grams of diluent, stirred until fully dissolved; (4) 7 grams of isocyanate curing agent (Bayer product, model N3390) was mixed with 5 grams of diluent, stirred until fully dissolved; (5) step (1), The products obtained in (2), (3) and (4) are mixed; (6) the temperature is lowered, and the obtained slurry is filtered to remove residues to obtain coating T1. Wherein, the diluent used is a mixture of acetone, butyl acetate and xylene in a weight ratio of 2:1:1.

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Abstract

The invention discloses au uv-curing coatings. It comprises main resin, diluting agent and light initiator, addictive or not. The coating also comprises hydroxy acrylate and isocyanate curing agent, which will solidify into membrane when heated at 60 Deg. C, the membrane enables the hardness and wear resistance of paint membrane to meet the demand, then cures the main resin under low UV light radiation.

Description

technical field [0001] The present invention relates to a photocurable coating and a preparation method thereof, more specifically to an ultraviolet photocurable coating and a preparation method thereof. Background technique [0002] Ultraviolet light-curing coating (UV coating) is a new type of coating that has emerged in my country in recent years. The coating has high solid content, rapid drying, and energy saving. [0003] Existing UV-curable coatings contain main resin, diluent and photoinitiator, and sometimes also contain additives such as leveling agent, defoamer, lubricant, and wear-resistant agent. Wherein, the host resin is selected from at least one of polyester acrylate, polyurethane acrylate and epoxy acrylate. [0004] Existing UV-curable coatings generally use aliphatic urethane acrylates with 5-6 functional groups (carbon-carbon double bonds) as the main resin, and aliphatic urethane acrylates with a small amount or no 2-3 functional groups as auxiliary fil...

Claims

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Application Information

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IPC IPC(8): C09D4/02
Inventor 成仁辉邓国栋谭伟华刘会权
Owner BYD CO LTD
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