Polishing-free UV (ultraviolet) adhesion primer for attaching melamine paper to medium density fiberboard and preparation method

Abstract

The invention relates to the technical field of coatings, and discloses a polishing-free UV (ultraviolet) adhesion primer for attaching melamine paper to a medium density fiberboard and a preparation method. The polishing-free UV adhesion primer comprises the following components by mass: 30-50% of epoxy acrylate resin, 0-25% of urethane acrylate resin, 5-50% of a reactive diluent, 3-5% of an initiator, 0.2-1% of a dispersant, 0.2-0.5% of a leveling agent, 0.1-0.3% of a defoaming agent, 0.5-1% of silica aerogel, 2-3% of epoxy phosphate resin, and 0-20% of a filler. The polishing-free UV adhesion primer can be directly roller-coated on untreated melamine paper, is directly cured by a UV machine without being dried after roller coating, is in a semi-dry state after being cured, can be directly curtain-coated with bright top-coat, is excellent in adhesion force, can be directly subjected to secondary coating without being polished, does not cause delamination and the like, avoids the situation that the melamine paper is damaged when being polished and the situation that finish paint can only be sprayed after the UV primer is polished, saves labor, and improves the production efficiency.

Description

technical field

[0001] The invention relates to the technical field of coatings, in particular to a polishing-free UV adhesion primer for pasting melamine paper on MDF and a preparation method. Background technique

[0002] In recent years, UV coatings have developed rapidly, with the advantages of high construction efficiency, short working hours, and no VOC emissions, and gradually occupy an important position in the furniture field. However, with the continuous application of melamine paper on MDF, the adhesion between UV primer and melamine paper is generally poor. This is mainly because melamine is a special inert chemical material. Molding agent and other materials, which make ordinary UV paint not well combined with melamine, resulting in poor adhesion, paint peeling and other problems.

[0003] In order to solve the adhesion problem, the general manufacturer will polish the melamine paper and then spray the PU primer. Although this can solve the adhesion problem whe...

Examples

Embodiment 1

[0019] It is used for sticking melamine paper on MDF without grinding UV adhesion primer. The components by mass include: epoxy acrylate resin 30-50%, polyurethane acrylate resin 0-25%, reactive diluent 5-50%, initiator 3-5%, dispersant 0.2-1%, leveling agent 0.2-0.5%, defoamer 0.1-0.3%, silica airgel 0.5-1%, epoxy phosphate resin 2-3%, Filler 0-20%.

[0020] The preparation method of this non-grinding UV adhesion primer comprises the following steps:

[0021] Put the acrylate resin and urethane acrylate resin into the dispersing tank, add part of the active diluent, and disperse for 5 minutes at a speed of 500-800r / min, so that the resin and the active diluent are completely mixed and dissolved, and then add the dispersant, defoaming agent in sequence agent, leveling agent, initiator, adhesion promoter, and then adjust the speed of 1200-1500r / min to disperse for 10-15min, then add anti-settling agent and filler in turn, and control the speed of 1500-1800r / min to disperse for...

technical field

[0001] The invention relates to the technical field of coatings, in particular to a polishing-free UV adhesion primer for pasting melamine paper on MDF and a preparation method. Background technique

[0002] In recent years, UV coatings have developed rapidly, with the advantages of high construction efficiency, short working hours, and no VOC emissions, and gradually occupy an important position in the furniture field. However, with the continuous application of melamine paper on MDF, the adhesion between UV primer and melamine paper is generally poor. This is mainly because melamine is a special inert chemical material. Molding agent and other materials, which make ordinary UV paint not well combined with melamine, resulting in poor adhesion, paint peeling and other problems.

[0003] In order to solve the adhesion problem, the general manufacturer will polish the melamine paper and then spray the PU primer. Although this can solve the adhesion problem whe...

Examples

Embodiment 1

[0019] It is used for sticking melamine paper on MDF without grinding UV adhesion primer. The components by mass include: epoxy acrylate resin 30-50%, polyurethane acrylate resin 0-25%, reactive diluent 5-50%, initiator 3-5%, dispersant 0.2-1%, leveling agent 0.2-0.5%, defoamer 0.1-0.3%, silica airgel 0.5-1%, epoxy phosphate resin 2-3%, Filler 0-20%.

[0020] The preparation method of this non-grinding UV adhesion primer comprises the following steps:

[0021] Put the acrylate resin and urethane acrylate resin into the dispersing tank, add part of the active diluent, and disperse for 5 minutes at a speed of 500-800r / min, so that the resin and the active diluent are completely mixed and dissolved, and then add the dispersant, defoaming agent in sequence agent, leveling agent, initiator, adhesion promoter, and then adjust the speed of 1200-1500r / min to disperse for 10-15min, then add anti-settling agent and filler in turn, and control the speed of 1500-1800r / min to disperse for...