Coiled material finish coating and preparing method thereof

A technology of topcoat and coil, applied in the field of coatings, can solve the problems of difficulty in high-speed roller coating construction, poor adaptability, slow drying and curing speed, etc.

Inactive Publication Date: 2005-02-23
解居会
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the advanced coil topcoat at home and abroad is better prepared by using oil-free polyester resin as raw material with additives and cross-linking curing agent, which can better meet the general printing speed requirements, but for high-speed roller coating, especially It is roller coating above 100m / s. When the solid content of the coating is high, the viscosity is also high, the drying and curing speed is slow, and the adaptability is not good. It is difficult to meet the requirements of high-speed roller coating construction. In addition, the coordination between hardness and flexibility is not good. Processability and chemical resistance need to be improved

Method used

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  • Coiled material finish coating and preparing method thereof
  • Coiled material finish coating and preparing method thereof
  • Coiled material finish coating and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Preparation of linear polyester resin: First, check the running condition of the equipment, the heating system is normal, check the materials according to the following formula, and the measurement is accurate, that is, neopentyl glycol 20kg, propylene glycol 10kg, trimethylolpropane 6kg, hydroxyterol 11kg, ethanol Diacid 15kg, isophthalic acid 35kg, catalyst 0.05kg, ethylene dibutyl ether 10kg, 150#34kg, DBE10kg; put the materials into the reaction equipment, fill the water separator with xylene, seal the reaction kettle, open the vent valve, Start to heat up, stir, heat up to 200°C, reflux for 2 hours, continue to heat up to 230°C, dehydration polycondensation until the acid value is less than 5mgKOH / g, cool down to below 190°C, add ethylene glycol butyl ether and 150# to adjust the viscosity to 20- 30C / 25°C, filter and test below 150°C to obtain a clear and transparent linear polyester resin, which is ready for use.

[0020] Preparation of white-ash coil topcoat: che...

Embodiment 2-5

[0022] According to the material proportioning described in table 3, the method described in embodiment 1 produces lime coil topcoat paint, the product performance of gained is shown in table 4, and wherein linear polyester resin can be the product that supplies on the market, also can be our company homemade products.

Embodiment 6-10

[0024] According to the material ratio described in Table 5, the method described in Example 1 is used to produce crimson coil topcoat paint, and the properties of the product obtained are shown in Table 6, wherein the linear polyester resin can be the product supplied on the market, or it can be produced by our company. homemade products.

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Abstract

It is a coating field to paint the coating a roll of material, is especially suitable for coating stencil plate, aluminium board surface, make the use applying a roll of material A kind of professional coating, by the linear mylar, an amino tree Fa, pigment, the auxiliary and solvent make up, a weight per gruop is divided. It is linear mylar or epoxy resin: Amino resin: defend Rust pigment: Auxiliary: Solvent=55:10:30:20:3; Among then linear mylar to be firm for content 60%, 20-30 of viscidities plus /25 deg.C, acid value smaller than 8mgKOH/g. This invention can the fast solification membrane of high temperature, a roll of material coating board made by it Have comprehensive excellent, push-proof, antiseptic performance, defend the wearing out. And give consideration to and paint the membrane flexibilitya nd hardness, have excellent machines Tool instrument processability and decorating.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a professional coating used for coating the surface of steel plates and aluminum plates to prepare pre-coated coils. Background technique [0002] Pre-coated coils are widely used because of their light weight, excellent performance and low price. With the advancement of technology and the continuous development of the market, they are more and more widely used. In addition to the construction industry, such as automobile manufacturing, ship interior decoration, home appliances, Furniture, containers and other fields have also developed rapidly. [0003] At present, the advanced coil topcoat at home and abroad is better prepared by using oil-free polyester resin as raw material with additives and cross-linking curing agent, which can better meet the general printing speed requirements, but for high-speed roller coating, especially It is roller coating above 100m / s. When the solid content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00
Inventor 解居会
Owner 解居会
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