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Nano-modified epoxy powder coating and preparation method thereof

A nano-modified epoxy powder technology, applied in the chemical field, can solve the problems of poor free flow of powder coatings, no specific solutions, poor operability, etc., and achieve improved weather resistance and excellent corrosion resistance , the effect of promoting stability

Inactive Publication Date: 2019-09-27
佛山市艾瑞博装饰材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, by reducing the particle size to 20 μm or less, the yield decreases, and when the particles are in the order of 20 μm or less, they are likely to aggregate so that the free-flowing property of the powder coating deteriorates, thus causing problems such as handling issues like sexual inadequacy
[0007] In summary, in the field of chemical powder coating preparation, there are still many practical problems that need to be dealt with in its practical application, and no specific solutions have been proposed.

Method used

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  • Nano-modified epoxy powder coating and preparation method thereof
  • Nano-modified epoxy powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A nano-modified epoxy powder coating, comprising the following components by weight: 30 parts of nano-modified epoxy resin, 30 parts of etherified melamine resin, 30 parts of triglycidyl isocyanurate, 1 part of defoamer, 2 parts of sinking agent, 5 parts of leveling agent, 35 parts of curing agent, 2 parts of composite surfactant, 25 parts of isopropanol, 10 parts of flame retardant, 9 parts of coupling agent, 30 parts of filler and 20 parts of pigment;

[0036] And the preparation of the nano-modified epoxy resin is as follows: dissolve the epoxy resin in ethanol with 3 times the mass, and then add nanoparticles accounting for 15% of the mass fraction of the epoxy resin; and disperse for 120min under stirring conditions combined with ultrasonic Afterwards, stir once every 15 minutes and let stand for 40 minutes to circulate for 3 hours, and finally remove ethanol to obtain nano-modified epoxy resin.

[0037] Wherein, the nano-particles are a mixture of nano-titanium di...

Embodiment 2

[0047] A nano-modified epoxy powder coating, comprising the following components by weight: 15 parts of nano-modified epoxy resin, 10 parts of etherified melamine resin, 30 parts of triglycidyl isocyanurate, 0.2 part of defoamer, anti-foaming agent 0.5 parts of sinking agent, 0.5 parts of leveling agent, 15 parts of curing agent, 0.5 parts of composite surfactant, 10 parts of isopropanol, 5 parts of flame retardant, 5 parts of coupling agent, 12 parts of filler and 20 parts of pigment;

[0048] And the preparation of the nano-modified epoxy resin is: dissolving the epoxy resin in 1 times the mass of ethanol, and then adding nanoparticles accounting for 1% of the mass fraction of the epoxy resin; and dispersing for 20 minutes in combination with ultrasonic waves under stirring conditions After that, stir once every 10min and let it stand for 25min to circulate for 1h, and finally remove ethanol to obtain nano-modified epoxy resin.

[0049] Wherein, the nanoparticles are nano-ti...

Embodiment 3

[0059] A nano-modified epoxy powder coating, comprising the following components by weight: 22 parts of nano-modified epoxy resin, 20 parts of etherified melamine resin, 20 parts of triglycidyl isocyanurate, 0.6 part of defoamer, anti-foaming agent 1.2 parts of sinking agent, 2.4 parts of leveling agent, 24 parts of curing agent, 1.2 parts of composite surfactant, 15 parts of isopropanol, 6 parts of flame retardant, 7 parts of coupling agent, 23 parts of filler and 15 parts of pigment;

[0060] And the preparation of the nano-modified epoxy resin is as follows: dissolve the epoxy resin in ethanol with 3 times the mass, and then add nanoparticles accounting for 6% of the mass fraction of the epoxy resin; and disperse for 60 minutes under stirring conditions combined with ultrasonic waves After that, stir once every 12min and let it stand for 32min in order to circulate for 3h, and finally remove ethanol to obtain nano-modified epoxy resin.

[0061] Wherein, the nano-particles a...

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Abstract

The invention provides a nano-modified epoxy powder coating and a preparation method thereof. The coating is prepared from nano-modified epoxy resin, etherified melamine resin, a triglycidyl isocyanurate, an antifoaming agent, an anti-settling agent, a leveling agent, a curing agent, a composite surfactant, isopropyl alcohol, a flame retardant, a coupling agent, a filler and a pigment. According to the powder coating provided by the invention, the adhesion and corrosion resistance of the powder coating can be increased by adding the nano-modified epoxy resin; the crosslinking property of components is good, the stability and weather resistance of an obtained coating film can be promoted, and the effect of the coating film is improved; a coating formed on a metal surface through the prepared powder coating has a relatively high glass transition temperature and can achieve a protective effect in a relatively large temperature range, resistance to medium penetration is good, and a long-lasting anti-corrosion effect is achieved; in addition, the formed coating film is clear in texture and good in hand feeling; the coating is dense and wear-resistant, has good impact resistance, flexibility and adhesive property, and can resist external force damage in construction.

Description

technical field [0001] The invention relates to the field of chemistry, in particular to a nano-modified epoxy powder coating and a preparation method thereof. Background technique [0002] Powder coating has the characteristics of solvent-free, non-environmental pollution, powder recovery and high utilization rate, and has been widely used. Powder coatings can be divided into two categories: thermoplastic and thermosetting. Thermoplastic powder coatings use thermoplastic resin as a film-forming substance. Its characteristic is that the synthetic resin becomes soft as the temperature rises and becomes hard after cooling. This process can be repeated many times, and it will gradually age after each change. Eventually it becomes a non-plastic powder. Thermosetting powder coatings use thermosetting synthetic resins as film-forming substances. It is characterized by the use of some prepolymer resins with a lower degree of polymerization, which are baked and solidified at a ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D161/32C09D5/03C09D5/08C09D5/18C09D7/61
CPCC08K2003/2227C08K2003/2241C08K2003/323C08L2201/08C08L2205/035C09D5/038C09D5/08C09D5/185C09D7/61C09D161/32C09D163/00C08L61/32C08K13/06C08K3/22C08K5/34924C08K3/32C08K5/053C08K5/34922C08L63/00
Inventor 艾庆林
Owner 佛山市艾瑞博装饰材料有限公司