Low-temperature thermal barrier powder coating and preparation method thereof
A powder coating, low-temperature heat technology, applied in powder coating, epoxy resin coating, coating, etc., can solve the problems that powder coating cannot be sprayed with heat-sensitive materials, low curing temperature, short curing time, etc., and achieve excellent blooming Performance and mechanical properties, effect of low curing temperature and short curing time
Inactive Publication Date: 2019-01-29
常州市源长新材料科技有限公司
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Problems solved by technology
[0007] The purpose of the present invention is to solve the problem that the powder coating in the prior art cannot be applied to the spraying of heat-sensitive materials such as MDF, cement board, glass, etc., and to provide a low-temperature thermal barrier powder coating with low curing temperature and short curing time
Method used
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Embodiment Construction
[0028] One, weigh each component of corresponding quality according to the formula of following each embodiment: the measurement unit of each component in each embodiment formula is kg.
[0029]
[0030]
[0031] The powder coating components of the above-mentioned Examples 1 to 9 were prepared according to the following steps: (1) premixing each component; (2) mixing uniformly in the crushing cylinder; (3) melt extruding (4) cooling by air cooler; (5) fine grinding by SCM mill; (6) packing. Wherein the melting temperature of the twin-screw extruder in the step (2) is set at 80-90°C. The powder coatings numbered P-1, P-2,,,,, P-9 were prepared.
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The invention relates to a low-temperature thermal barrier powder coating and a preparation method thereof. The coating comprises the following components: phenolic epoxy resin, a modified phenolic curing agent, an imidazole curing agent, an auxiliary agent and pigment and filler. The powder coating disclosed by the invention subverts conventional coatings, is low in curing temperature and is short in curing time, and a cured paint film has excellent blooming performance and mechanical performance. The powder coating disclosed by the invention breaks through the limitation that powder coatingsin the prior art are only suitable for high-temperature-resistant metal substrates, and coating of the powder coating is expanded to a wider coating field, such as medium density fiberboards (MDF), glass plates and the like.
Description
technical field [0001] The invention relates to a coating composition, in particular to a powder coating and a preparation method thereof. Background technique [0002] Powder coating is a solid powder synthetic resin coating composed of solid resin and pigments, fillers and additives. Unlike ordinary solvent-based paints and water-based paints, its dispersion medium is not solvent and water, but air. It has the characteristics of no solvent pollution, 100% film formation and low energy consumption. [0003] It has two categories: thermoplastic powder coating and thermosetting powder coating. [0004] Thermoplastic powder coatings are composed of thermoplastic resins, pigments, fillers, plasticizers and stabilizers. Thermoplastic powder coatings include: polyethylene, polypropylene, polyester, polyvinyl chloride, chlorinated polyether, polyamide, cellulose, polyester. [0005] Thermosetting powder coatings are composed of thermosetting resins, curing agents, pigments, fi...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C09D163/04C09D5/03C09D7/61C09D7/65
CPCC08K2003/2241C08K2003/3045C08L2205/03C09D5/033C09D163/04C08L91/06C08K13/02C08K3/22C08K3/04C08K3/30C08L1/14
Inventor 王刚耿宏荣
Owner 常州市源长新材料科技有限公司
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