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Nano polyester powder coating

A polyester powder and nano technology, applied in polyester coatings, powder coatings, coatings, etc., can solve the problems such as patent reports of nano polyester powder coatings that have not been found yet

Inactive Publication Date: 2003-10-22
宁波市鄞州东海粉末涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sunscreen and cosmetics that combine nanoparticles and resins to absorb ultraviolet rays have been put on the market. Chinese patent 01110586.0 mentions a water-based nano-environmental protection coating for walls. No patent report on nano-polyester powder coatings has been found yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1, formula composition: 20% weight of unsaturated polyester resin, 3% weight of nano silicon oxide, 7% weight of curing agent, 50% weight of inorganic filler, 10% weight of pigment, and 10% weight of other auxiliary agents .

[0013] Selection of main raw materials: Unsaturated polyester resin with an acid value of 55-75KOH / g, a softening point of 85-105°C, a glass transition temperature of >50°C; nano-silica particle size of 5-15nm, SiO x The content is >99.9; the curing agent is white powder, the epoxy value is about 0.9, the melting point is 88-92°C, and the organic chlorine value is <0.02 equivalent / kg.

[0014] Brief description of the process: Mix and pulverize unsaturated polyester resin, nano-silica, curing agent, pigments and inorganic fillers, mix and mix alternately at high and low speeds, stir at 1500-5000 rpm for 5 minutes, turn at low speed 300-500 rpm Stir for 5 minutes, then turn to high speed and repeat at high and low speeds several times. ...

Embodiment 2

[0016] Embodiment 2, formula composition: 30% weight of unsaturated polyester resin, 5% weight of nano-zinc oxide, 8% weight of curing agent, 50% weight of inorganic filler, 2% weight of pigment, and 5% weight of other auxiliary agents .

[0017] Selection of main raw materials: unsaturated polyester resin with an acid value of 55-75KOH / g, a softening point of 85-105°C, a glass transition temperature of >50°C; nano-zinc oxide particle size of 50-100nm, ZnO 2 The content is >99.9; the curing agent is white powder, the epoxy value is about 0.9, the melting point is 88-92°C, and the organic chlorine value is <0.02 equivalent / kg.

[0018] Brief description of the process: Mix and pulverize unsaturated polyester resin, nano-zinc oxide, curing agent, pigment and filler, alternately stir and mix at high and low speeds, stir at 1500-5000 rpm for 5 minutes, and turn at low speed 300-500 rpm Stir for 5 minutes, repeat high and low speed several times, adjust and control the temperature...

Embodiment 3

[0020] Embodiment 3, formula composition: 40% weight of unsaturated polyester resin, 2% weight of nano-titanium oxide, 10% weight of curing agent, 40% weight of inorganic filler, 2% weight of pigment, and 6% weight of other auxiliary agents .

[0021] Selection of main raw materials: Unsaturated polyester resin with an acid value of 55-75KOH / g, a softening point of 85-105°C, a glass transition temperature of >50°C; nano-titanium oxide particle size of 10-50nm, TiO 2 The content is >99.9; the curing agent is white powder, the epoxy value is about 0.9, the melting point is 88-92°C, and the organic chlorine value is <0.02 equivalent / kg.

[0022] Brief description of the process: Mix and pulverize unsaturated polyester resin, nano silicon oxide, curing agent, pigment and filler, alternately stir and mix at high speed and low speed, that is, stir at 1500-5000 rpm for 5 minutes, and turn at low speed 300-500 rpm Stir for 5 minutes, then turn to high speed, then low speed, high and ...

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Abstract

The composition of nano polyester powder coating material is composed of (wt%) 20-50% of unsaturated polyester resin, 2-5% of inorganic nano powder, 5-10% of solidifying agent, 30-50% of inorganic filling material and 0-10% of other adjuvant, in which the inorganic nano powder is titanium oxide, silicon oxide or zinc oxide, and said invented nano polyester coating layer has the advantages of goodlevelling property, uniform coating layer colour, strong resistance to UV-ray and long time for resisting ageing.

Description

technical field [0001] The invention relates to a paint, which is a polyester powder paint containing nanoscale powder. Background technique [0002] Powder coating, because it emits very little volatile harmful gas to the environment during coating and curing, and does not cause environmental problems such as air pollution, its application fields are constantly expanding. However, when the powder coating is heated and melted to knead the resin and the curing agent, due to the uneven dispersion of the curing agent, the advection is poor, so the problem of poor appearance of the coating film occurs. In addition, the dispersibility of pigments and fillers is poor. Compared with liquid coatings, powder coatings are difficult to obtain bright, clear and glossy coating films. The application of nanotechnology in the coatings industry promotes the upgrading of coatings, making powder coatings truly green and environmentally friendly coatings, and creating a breakthrough developme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/03C09D167/00
Inventor 陈彩亚陈彩凤
Owner 宁波市鄞州东海粉末涂料有限公司
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