Powder coating for edge sealing of heat-sensitive base material and edge-sealing coating and preparation method thereof

A technology for heat-sensitive substrates and powder coatings, which is applied in the direction of powder coatings, coatings, polyester coatings, etc., and can solve the inability to make edge-sealed coatings for heat-sensitive substrates, constraints, edge-sealed coating strength and leveling limitations, etc. question

Inactive Publication Date: 2014-05-07
TIGER DRYLAC TAICANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The applicant tested various disclosed improvement schemes in the background technology, and found that they all used pre-sealing of heat-sensitive substrates in order to avoid the problem of cracks in the existing commercial powder coating spraying, specifically, If hot melt adhesive is used to apply edge banding, or UV-curable UV-curable coating is used to coat edge banding, although a certain procedure solves the problem of cracks caused by spraying conventional low-temperature curing powder coatings, the edge banding process is complicated and not suitable Edge sealing is performed on heat-sensitive substrates with complex shapes and structures. At the same time, the penetration of liquid application is poor, and thick coating cannot be achieved, which limits the strength and leveling of the edge sealing coating, and ultimately cannot produce high quality The heat-sensitive substrate edge-banding coating makes the application of powder coatings on the heat-sensitive substrate edge-banding subject to extremely difficult restrictions

Method used

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  • Powder coating for edge sealing of heat-sensitive base material and edge-sealing coating and preparation method thereof
  • Powder coating for edge sealing of heat-sensitive base material and edge-sealing coating and preparation method thereof
  • Powder coating for edge sealing of heat-sensitive base material and edge-sealing coating and preparation method thereof

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preparation example Construction

[0033] The embodiment of the present invention also discloses a preparation method of the above-mentioned powder coating for heat-sensitive substrate edge sealing, wherein the operation steps include the following:

[0034] a), put all the raw materials in the above parts by weight into the mixing tank and mix to obtain the mixing;

[0035] b), placing the mixture obtained in the above step a) in an extruder for melt extrusion, and then cooling to obtain a tablet material;

[0036] c), the tableting material obtained in the above step b) is first coarsely pulverized and then ground to obtain a fine powder;

[0037] d), the fine powder obtained in the above step c) is separated by a cyclone separator, classified and sieved, tested and finished;

[0038] e), completing the preparation of the powder coating for edge banding of heat-sensitive substrates.

[0039] The embodiment of the present invention also discloses a heat-sensitive substrate edge-sealing coating, wherein, on t...

Embodiment 1

[0043] A heat-sensitive base material edge sealing powder coating, wherein the powder coating comprises the following raw materials in parts by weight:

[0044] 63 parts of unsaturated polyester resin;

[0045] 5 parts of ultraviolet spectrum initiators, the wavelength range of ultraviolet spectrum is 0.01-0.4 μm, preferably, the ultraviolet spectrum initiators are carbonyl compounds, dyes, metal organics, halogen-containing compounds, azo compounds and peroxy compounds Any one or a mixture of several UV-like initiators; more preferably, the UV initiator is benzoin derivatives, benzil derivatives, dialkoxyacetophenone, α-hydroxyalkyl Any one or a mixture of several benzophenones; specifically, in this embodiment, the ultraviolet spectrum initiator is a benzil derivative;

[0046] 5 parts of thermal initiator, the temperature range of thermal initiation is 60-150°C, preferably, the thermal initiator is any one of benzoyl peroxide, azobisethylheptanonitrile, azobisethylbutyroni...

Embodiment 2

[0060] All the other technical solutions of this embodiment 2 are the same as those of the above-mentioned embodiment 1, the only difference being that the powder coating comprises the following raw materials in parts by weight:

[0061] 25 parts of unsaturated polyester resin;

[0062] 10 parts of ultraviolet spectrum initiator;

[0063] 10 parts of thermal initiator;

[0064] 35 parts of pigments and fillers;

[0065] 20 parts of auxiliary agent, specifically, in this embodiment, the auxiliary agent includes 3 parts of leveling agent, 5 parts of rheological agent, 5 parts of viscosity reducer, 3 parts of degassing agent and 4 parts of defoamer.

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Abstract

The invention relates to a powder coating for edge sealing of a heat-sensitive base material and an edge-sealing coating and a preparation method thereof. The powder coating is prepared from the following raw materials in parts by weight: 25-70 parts of unsaturated polyester resin or super-esterified polyester resin, 1-20 parts of ultraviolet spectrum initiator in the wavelength range of 0.01-0.04mu m, 1-20 parts of thermal initiator in the thermal initiation temperature range of 60-150 DEG C, 5-35 parts of pigments and fillers and 0-20 parts of aids. A good edge-sealing effect on the heat-sensitive base material is achieved, cracks generated on the side face of the heat-sensitive base material are effectively avoided, electrostatic spraying is adopted, the edge-sealing process is simple and convenient, and the powder coating is suitable for edge sealing of base material workpieces of various shapes.

Description

technical field [0001] The invention relates to a heat-sensitive substrate edge-sealing technology, in particular to a powder coating for heat-sensitive substrate edge-sealing, an edge-sealing coating, and a preparation method thereof. Background technique [0002] Thermosetting powder coatings are widely used in various fields due to their advantages of no organic solvent, good environmental protection, high utilization rate, and convenient storage and transportation. Due to the heat sensitivity of heat-sensitive substrates (such as wood, fiberboard, plastic, cement board, etc.), conventional thermosetting powder coatings cannot be directly applied to heat-sensitive substrates. With the development of modern science and technology, there are many low-temperature curing powder coatings for heat-sensitive substrates. However, the following problems still exist in the actual production process: [0003] When the heat-sensitive substrate is baked and cured after the low-temper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/06C09D167/00C09D5/03C09D5/32C09D5/33
Inventor 刘际平高志豪顾颂文
Owner TIGER DRYLAC TAICANG
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