Ultraviolet light curing transparent priming paint and preparation method and use method thereof

Abstract

The invention discloses an ultraviolet light curing transparent priming paint and a preparation method and a use method thereof. The ultraviolet light curing transparent priming paint comprises the following components in percentage by weight: 20-30% of bisphenol A epoxy acrylate resin, 15-25% of polyester acrylate, 1-10% of urethane acrylate, 5-10% of reagent type hydroxyethyl acrylate, 10-20% of tripropylene glycol diacrylate, 12-25% of trimethylolpropane triacrylate, 4-6% of photoinitiator, 10-25% of filling powder and 0.4-0.8% of promotor. The ultraviolet light curing transparent priming paint is suitable for laser roller construction, has good grittiness and transparency, has the characteristics that sanding is not needed for semi-curing recoating between film layers and the like, and has thick coating performance and the performance that the surface is similar to a mirror surface, and compared with conventional roller coating, the coating weight is greatly increased, roller coating processes are saved, the priming paint is sanded by a sanding machine without large pressure and with a small number of sanded films, a workpiece has no bright spots, the fullness of a product is guaranteed, the product quality is improved, the loss of the machine is smallreduced, and the use amount of sanding belts is greatly reduced.

Description

technical field [0001] The invention relates to an ultraviolet light-curable primer, in particular to an ultraviolet light-curable transparent primer applied to laser rollers of woodware and its preparation method and application method. Background technique [0002] At present, the roller coating methods commonly used in the field of UV wood paints are all coated with ordinary rubber rollers or silicone rollers with smooth surfaces. The problem with this method is that the amount of one-time coating is small, and the average coating amount is 15-20g. / ㎡, and the surface effect is relatively rough, showing a pockmarked surface, and the larger the coating amount, the rougher the surface and the more difficult it is to sand. Only when more paint is removed can the sand be flat without bright spots, and the loss of the abrasive belt is very large. Because too much paint film is sanded off, the fullness of the finished product will be poor, and more times of roller coating are ...

AI Technical Summary

Problems solved by technology

[0002] At present, the roller coating methods commonly used in the field of UV wood paints are all coated with ordinary rubber rollers or silicone rollers with smooth surfaces. The problem with this method is that the amount of one-time coating is small, and the average coating amount is 15-20g. / ㎡, and the surface effect is relatively rough, showing a pockmarked surface, and the larger the coating amount, the rougher the surface and the more difficult it is to sand. It takes a lot of paint to make the sand flat without bright spots, which will cause a lot of loss to the abrasive belt

Because too much paint film is sanded off, the fullness of the topcoated product will be poor, and more times of roller coating are required to meet customer requirements

[0003] In response to the above phenomenon, laser roller coating primers with laser engraved line grooves have been launched on the market. After the ordinary UV roller coating transparent primer is applied by laser roller coating, the paint coating amount is only 15-20g / ㎡, and it is covered by the roller plate. The surface of the part is pitted, which makes the subsequent sanding process unable to proceed, and cannot achieve the effect of thick coating (25-35g / ㎡) and surface smoothness close to the mirror surface required by the laser roller

The reason is that ordinary UV roller-coated transparent primer cannot completely wet into the groove of the laser-engraved laser roller, and the paint cannot be quickly spread and leveled on the board after the laser roller is roller-coated, so it is not suitable for laser at all. Roller coater

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