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Anticorrosive and antibacterial novolac epoxy resin powdery paint

A technology of phenolic epoxy resin and powder coating, applied in the field of coatings, can solve the problems of poor weather resistance, poor heat resistance of coating film, easy yellowing and chalking of coating film, achieve excellent flatness and gloss, and improve oxidation resistance ability, strong weather resistance and heat resistance effect

Active Publication Date: 2013-11-06
苏州强固管道防腐材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the epoxy powder mask coating has many advantages, it still has the following disadvantages: because of its poor weather resistance, it is easily yellowed and chalked when used outdoors, so its application is limited; the heat resistance of the coating is poor, Easy to change color when baked and cured

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Anti-corrosion and antibacterial phenolic epoxy resin powder coating, including the following raw materials in parts by mass: 100 parts of novolac epoxy resin, 10 parts of semi-drying oil alkyd resin, 20 parts of heavy calcium carbonate, 10 parts of titanium dioxide, 5 parts of nano-titanium dioxide, 10 parts of ammonium dihydrogen phosphate, 6 parts of 2-phenylimidazoline, 0.8 parts of polyacrylate-2-ethylhexyl leveling agent, 2-[1-(2-hydroxy-3,5- Di-t-pentylphenyl) ethylene]-4,6-di-t-pentylphenyl acrylate 0.5 parts.

[0015] The filler is ground calcium carbonate, talcum powder or mica powder.

[0016] The preparation method of the present invention: according to the above-mentioned ratio, mix the powdered and dried novolac epoxy resin, semi-dry oil alkyd resin and other raw materials in a high-speed mixer for 8in, and then pass through the extruder at 105°C Extrude at the bottom, crush the extruded material into a powder of 35 μm, and then obtain the finished produc...

Embodiment 2

[0018] Anti-corrosion and antibacterial phenolic epoxy resin powder coating, including the following raw materials in parts by mass: 120 parts of novolac epoxy resin, 15 parts of semi-drying oil alkyd resin, 25 parts of mica powder, 15 parts of titanium dioxide, and nano-titanium dioxide 10 parts, 12 parts of ammonium dihydrogen phosphate, 8.4 parts of 2-phenylimidazoline, 1.2 parts of polyacrylate-2-ethylhexyl leveling agent, 2-[1-(2-hydroxy-3,5-ditert 0.8 part of pentylphenyl) ethylene] -4,6-ditentylphenyl acrylate.

[0019] The preparation method of the present invention is the same as in Example 1, with the mass ratio as described above, and the finished product is subjected to performance testing, and the testing results are shown in Table 1.

Embodiment 3

[0021] Anti-corrosion and antibacterial phenolic epoxy resin powder coating, including the following raw materials in parts by mass: 112 parts of novolac epoxy resin, 13 parts of semi-drying oil alkyd resin, 24.6 parts of talcum powder, 121.7 parts of titanium dioxide, and nano-titanium dioxide 8 parts, 11.2 parts of ammonium dihydrogen phosphate, 7.6 parts of 2-phenylimidazoline, 0.96 parts of polyacrylate-2-ethylhexyl leveling agent, 2-[1-(2-hydroxy-3,5-ditert 0.6 part of pentylphenyl) ethylene] -4,6-ditentylphenyl acrylate.

[0022] The preparation method of the present invention is the same as in Example 1, with the mass ratio as described above, and the finished product is subjected to performance testing, and the testing results are shown in Table 1.

[0023] The paint film aging (artificial acceleration) performance test is carried out to the coating obtained by the coating of the present invention, and the paint film damage and discoloration are evaluated according to ...

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Abstract

The invention discloses an anticorrosive and antibacterial novolac epoxy resin powdery paint. The anticorrosive and antibacterial novolac epoxy resin powdery paint comprises following ingredients, by mass: 100 to 120 portions of linear novolac epoxy resin, 10 to 15 portions of semi-drying oil alkyd resin, 20 to 25 portions of a filling material, 10 to 15 portions of titanium dioxide, 5 to 10 portions of nanometer titanium dioxide, 10 to 12 portions of ammonium dihydrogen phosphate, 6 to 8.4 portions of 2-phenylimidazoline, 0.8 to 1.2 portions of polyacrylic acid-2-phthalic acid ester flatting agent and 0.5 to 0.8 portion of 2-[1-(2-hydroxy-3, 5-ditertamylphenyl)ethylene]-4, 6-ditertamylphenylacrylic ester. The filling material is heavy calcium carbonate, talc powder or mica powder. Alkyd resin and linear novolac epoxy resin which possess excellent weatherability are selected as base materials of the anticorrosive and antibacterial novolac epoxy resin powdery paint; the anticorrosive and antibacterial novolac epoxy resin powdery paint possesses excellent anticorrosive and antibacterial effect, and high weatherability and heat resistance because of the combined effects of alkyd resin, linear novolac epoxy resin and the other auxiliary agents.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to an antiseptic and antibacterial phenolic epoxy resin powder coating. Background technique [0002] Epoxy powder coating is one of the main varieties of thermosetting powder coating, and it is also the earliest powder coating developed and applied. Epoxy powder coatings have the following advantages: the melt viscosity is low, so the coating film has good leveling property, the adhesion to the metal substrate is very good, so no primer is required, the paint film has high hardness, good scratch resistance and durability. The impact strength and other mechanical properties are good, and the paint film has good water resistance, acid resistance, alkali resistance and salt water resistance. Although the epoxy powder mask coating has many advantages, it still has the following disadvantages: because of its poor weather resistance, it is easily yellowed and chalked when used outdoors, so its a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/04C09D167/08C09D7/12C09D5/03
Inventor 庄亚东
Owner 苏州强固管道防腐材料有限公司
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