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Compound functional agricultural machinery finishing powder coating and production process thereof

A powder coating and functional technology, applied in powder coatings, bulk chemical production, polyester coatings, etc., can solve the problems of cumbersome production process, not very easy, and many devices, so as to reduce production costs, reduce electric energy, The effect of lowering the baking temperature

Active Publication Date: 2014-10-22
ZHANG ZHOU SAN PAINTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this production process can overcome the steps of melting and mixing epoxy / polyester resins, extruding tablets, and crushing extruded tablets in the traditional powder coating production, thereby reducing production costs and energy consumption, the production process is too cumbersome. , there are many devices and components, it is not very easy to control various factors

Method used

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  • Compound functional agricultural machinery finishing powder coating and production process thereof
  • Compound functional agricultural machinery finishing powder coating and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Preparation of polyester / acrylic resin composite 1: It is prepared by mixing polyester resin and acrylic resin in a weight ratio of 7:3, and reacting in a high-temperature reactor at 150° C. for 1 hour.

[0042] Preparation of epoxy-modified acrylic resin: using methyl methacrylate, acrylic acid, octyl acrylate, styrene, hydroxypropyl acrylate, trimethylolpropane triacrylate as monomers, benzoyl peroxide as initiator, E-44 epoxy resin is used as modifier and polymerized.

[0043] Preparation of nanocomposite cross-linking agent: 4,5-imidazole dicarboxylic acid and benzimidazole-5,6-dicarboxylic acid as sensitized organic ligands, grafted onto mesoporous SiO through covalent bonds 2 On the nanoparticles, a nanocomposite cross-linking agent is prepared.

[0044] The glass powder used is VX-SP imported from Japan.

[0045] The polyester resin is 9855 polyester resin supplied by Baotian New Materials.

[0046] The raw material components of the powder coating are shown i...

Embodiment 2

[0050] This embodiment is basically the same as Embodiment 1, and its difference is:

[0051] To prepare polyester / acrylic composite 2, react for 1.5 hours.

[0052] The method of CN103467714A is adopted to prepare high hydroxyl polyester resin.

[0053] The crosslinking agent is trimethylolpropane.

[0054] The nano-scale glass powder is Jingshan nano-scale glass powder JLH-T90 produced and sold by Shenzhen Jinlonghui Industrial Co., Ltd.

[0055] In addition, the additives are different, see Table 1 for details.

Embodiment 3

[0057] This embodiment is basically the same as Embodiment 1, the difference is that the additives are different, the temperature of the supercritical fluid tank is set to 120 ° C, after heating to the set temperature, the temperature is kept constant for 5 minutes, and the rotation speed of the shearing element is 150 rpm , with a shear mixing time of 10 minutes.

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Abstract

The invention discloses a compound functional agricultural machinery finishing powder coating and a production process thereof. The powder coating comprises the following components in parts by weight: 2-8 parts of a polyester / acrylic resin compound, 30-50 parts of polyester resin, 12-22 parts of epoxy modified acrylic resin, 20-35 parts of nano glass powder, 1-5 parts of a cross-linking agent and 1-2.5 parts of an assistant. A supercritical carbon dioxide fluid method is adopted in the production process. The powder coating is corrosion-proof, rust-proof and excellent in weather resistance, the production process of the powder coating is low in energy consumption and high in efficiency, and the production processing temperature is reduced.

Description

technical field [0001] The invention relates to the technical field of powder coatings for agricultural machinery, and particularly discloses a composite functional agricultural machinery finishing powder coating and a production process thereof. Background technique [0002] As powder coatings become more and more important in the coatings industry, powder coatings have achieved rapid development in recent years. At the same time, because the powder coating formula does not contain organic solvents such as VOC, benzene, toluene, xylene, etc. , is an environmentally friendly product with excellent environmental benefits. Epoxy resin has good anti-corrosion performance, and acrylic resin has good weather resistance. In recent years, powder coatings involving epoxy or acrylic resin have also developed rapidly. For example, the authorized announcement patent CN1202184C discloses a thermosetting scratch-resistant outdoor low-gloss powder Coating, its main components include epo...

Claims

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Application Information

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IPC IPC(8): C09D167/02C09D151/08C09D5/03C09D7/14C09D7/80
CPCY02P20/54
Inventor 许绍凰项椿烨蓝文烽
Owner ZHANG ZHOU SAN PAINTS
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