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A heavy-duty anti-corrosion powder coating
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A powder coating and heavy-duty anti-corrosion technology, which is applied in powder coatings, anti-corrosion coatings, polyester coatings, etc., can solve the problems of heavy anti-corrosion of pipelines, and achieve significant economic and social benefits, high cost performance, and outstanding anti-corrosion performance.
Active Publication Date: 2016-12-14
东莞市惠尔明高分子材料科技有限公司
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Problems solved by technology
[0002] Powder coating is a new type of coating that exists in the state of fine powder and does not use solvents. It is harmless, high-efficiency, and resource-saving. It is an environmentally friendly and recyclable coating. Resin is used as a film-forming substance. After adding a curing agent for cross-linking reaction, it can form a hard coating that is insoluble and infusible. No matter how high the temperature is, the coating will not soften like a thermoplastic coating, but will only decompose. Since the resin used in thermosetting powder coatings is a prepolymer with a low degree of polymerization and a low molecular weight, the leveling property of the coating is good, and after the low molecular weight prepolymer is cured, it can form a large cross-linked network. Molecules, so the coating has good anti-corrosion properties; however, the existing powder coatings cannot meet the heavy anti-corrosion requirements of buried pipelines such as natural gas and oil, which has become a bottleneck in the development of the coatings field
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Embodiment 1
[0009] A heavy-duty anti-corrosion powder coating, composed of the following raw materials in weight percentage, bisphenol A type epoxy resin 44%, polyester resin 14%, zinc powder 3%, aluminum hydroxide 1%, titanium dioxide 20%, barium sulfate 14% %, degassing agent 1%, leveling agent BNK-LK600 1%, pigment and filler 2%.
Embodiment 2
[0011] A heavy-duty anti-corrosion powder coating, composed of the following raw materials in weight percentage, bisphenol A epoxy resin 49%, polyester resin 16%, zinc powder 1%, aluminum hydroxide 2%, titanium dioxide 16%, barium sulfate 12% %, degassing agent 1%, leveling agent BNK-LK600 2%, pigment and filler 1%.
Embodiment 3
[0013] A heavy-duty anti-corrosion powder coating, composed of the following raw materials in weight percentage, bisphenol A epoxy resin 40%, polyester resin 20%, zinc powder 2%, aluminum hydroxide 3%, titanium dioxide 18%, barium sulfate 12% %, degassing agent 2%, leveling agent BNK-LK600 2%, pigment and filler 1%.
[0014] Preparation Process:
[0015] (1) Put each raw material in a mixer according to the composition ratio and mix at a rate of 600rpm for 5 minutes. (2) Melt and extrude the mixed raw materials through a screw extruder. Material section temperature 105°C;
[0016] (3) The molten material is pressed into tablets by a tablet press, and the thickness is controlled at 3mm. After crushing, it is sent to a mill for pulverization, and passed through a 180-mesh sieve.
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Abstract
The invention discloses a heavy-duty anti-corrosion powder coating, which is composed of the following raw materials in weight percentage: 40-49% of epoxy resin, 14-20% of polyester resin, 1-3% of zinc powder, 1-2% of aluminum hydroxide, titanium White powder 16-20%, barium sulfate 12-14%, degasser 1-2%, leveling agent 1-2%, pigment and filler 1-2%. The product has smooth coating, good leveling, outstanding anti-corrosion performance, and strong mechanical properties such as impact resistance. It is suitable for anti-corrosion coatings on the inner and outer walls of chemical, chemical, petroleum, gas and other transportation pipelines; this product does not contain toxic raw materials restricted by the state , cost-effective, significant economic and social benefits.
Description
technical field [0001] The invention relates to the field of coatings, in particular to an anti-corrosion epoxy resin powder coating. Background technique [0002] Powder coating is a new type of coating that exists in the state of fine powder and does not use solvents. It is harmless, high-efficiency, and resource-saving. It is an environmentally friendly and recyclable coating. Resin is used as a film-forming substance. After adding a curing agent for cross-linking reaction, it can form a hard coating that is insoluble and infusible. No matter how high the temperature is, the coating will not soften like a thermoplastic coating, but will only decompose. Since the resin used in thermosetting powder coatings is a prepolymer with a low degree of polymerization and a low molecular weight, the leveling property of the coating is good, and after the low molecular weight prepolymer is cured, it can form a large cross-linked network. Molecules, so the coating has good anti-corros...
Claims
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Application Information
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