Preparation method of ultra-low-temperature fast-curing powder coating resin for medium density boards
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A powder coating, medium density technology, applied in powder coatings, polyester coatings, anti-corrosion coatings, etc., can solve the problems of unusable, etc., and achieve the effect of reducing damage and reducing curing conditions
Inactive Publication Date: 2020-02-21
SHANDONG RUIFENG CHEM
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Problems solved by technology
It cannot be used on MDF, so a low-temperature fast-curing powder coating can be used on MDF
Method used
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Examples
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Effect test
Embodiment 1
[0027] 40 parts polyester resin
[0028] 40 parts epoxy resin
[0029] Leveling agent 1 part
[0030] Benzoin 0.7 parts
[0031] Brightener 1 part
[0032] 20 parts of pigments and fillers
[0033] 0.5 parts of 2-methylimidazole
[0034] Preparation process: The raw materials are mixed according to a certain weight ratio, mixed evenly in an automatic mixer, and then extruded in a thermosetting twin-screw extruder. The extrusion temperature is 95°C in the first zone, 95°C in the second zone, and 100°C in the third zone. After cooling, it is pulverized by a pulverizer, electrostatically sprayed, and baked. Baking conditions were 130° C. for 10 minutes to obtain samples.
Embodiment 2
[0036] 40 parts polyester resin
[0037] 40 parts epoxy resin
[0038] Leveling agent 1 part
[0039] Benzoin 0.7 parts
[0040] Brightener 1 part
[0041] 20 parts of pigments and fillers
[0042] 0.7 parts of 2-methylimidazole
[0043] The preparation process is the same as in Example 1.
Embodiment 3
[0045] 40 parts polyester resin
[0046] 40 parts epoxy resin
[0047] Leveling agent 1 part
[0048] Benzoin 0.7 parts
[0049] Brightener 1 part
[0050] 20 parts of pigments and fillers
[0051] 0.5 parts of 2-phenylimidazoline
[0052] The preparation process is the same as in Example 1.
[0053] The samples of the three examples have been tested, and the curability, adhesion, hardness, wear resistance, and corrosion resistance have all reached the effect of normal powder coatings at 180°C for 15 minutes, and can be sprayed on the surface of medium density boards without damaging the medium density. plate.
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Abstract
The invention belongs to the technical field of coatings, and particularly relates to a preparation method of an ultra-low-temperature fast-curing powder coating resin for medium density boards. The curing powder coating for medium density boards is synthesized mainly from a polyester resin, an epoxy resin, a leveling agent, benzoin, a brightener, a pigment and filler, a curing accelerator and other raw materials. In the preparation method, methods such as adopting the low-temperature curing polyester resin and adding the curing accelerator are used to effectively reduces curing conditions ofthe powder coating, so that the powder coating can be completely cured by baking at 130 DEG C for 10 minutes. The product performance (adhesion, hardness, wear resistance, corrosion resistance) is higher than the performance of paints, and volatile gases cannot be generated. By adding a variety of pigments and texture agents, various wood boards for decorative materials are prepared to meet various decorative requirements.
Description
technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a preparation method of an ultra-low temperature fast-curing powder coating resin for medium density boards. Background technique [0002] The surface of decorative MDF usually needs to be sprayed with paint, but the paint is highly polluted, has volatile solvents and toxic gases, and is not environmentally friendly; in addition, the drying time is long and the efficiency is low. As a kind of solvent-free dry powder coating, powder coating has short drying time and no solvent gas pollution. -30 minutes. It cannot be used on MDF, so a low-temperature fast-curing powder coating can be used on MDF. Contents of the invention [0003] The purpose of the present invention is to provide a solidified powder coating for medium density boards, which can effectively replace paint, reduce the damage of volatile substances caused by liquid coatings, and is non-toxic and envir...
Claims
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Application Information
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