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Low-temperature curing color coiled material paint and method for preparing same

A coil coating and color technology, applied to polyester coatings, coatings, etc., can solve the problems of energy waste and high curing temperature, and achieve the effects of reducing consumption, low curing temperature and improving friction

Active Publication Date: 2009-09-16
JIANGSU LANLING POLYMER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned defects, the technical problem to be solved in the present invention is to provide a low-temperature curing color coil coating and its preparation method in view of the high curing temperature of the existing high-temperature baking-curing coating, which causes energy waste.

Method used

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Embodiment 1

[0025] The matrix resin adopted in the present invention is saturated polyester resin, and saturated polyester resin is a kind of polyester resin with higher reactivity, and the prepared coating can also realize curing under high temperature conditions, and the full armor that curing agent adopts A mixture of etherified amino resins and partially methylated amino resins. Partially methylated amino resins can effectively increase the ratio of imine groups to methoxy groups in paints, thereby increasing the hardness of the paint layer without using partial methyl ethers. Amino resins are all used to replace full methyl etherified amino resins, because the ratio of imine groups to methoxy groups is too high, which will cause the paint layer to become brittle and lack toughness. Polytetrafluoroethylene wax powder can improve wear resistance and prevent material Surface scratches, improve sliding properties, reduce friction, noise and adhesion between materials, and prepare material...

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Abstract

The invention relates to a paint composition, in particular to a low-temperature curing paint used for manufacturing color steel plates and a method for preparing the same. The method comprises the following steps: adding 45 to 60 weight percent of saturated polyester resin, 3 to 5 weight percent of fully-methylated amino resin and 3 to 5 weight percent of partially-methylated amino resin into a reaction kettle; while stirring, adding 3 to 5 weight percent of propylene glycol ether acetate, 2 to 5 weight percent of binary acid dimethyl ester, 2 to 0.5 weight percent of closed cooling catalyst, 0.2 to 0.5 weight percent of open cooling catalyst, 5 to 10 weight percent of trimethyl benzene solvent to the mixture; after stirring the mixture evenly, adding 0.3 to 0.8 weight percent of dispersant to the mixture, and then adding 20 to 40 weight percent of filling pigment and 0.3 to 0.8 weight percent of wax powder while stirring; and after the mixture is dispersed evenly, performing sanding in a sand mill, and then performing paint and color mixing process to obtain the finished product, namely the low-temperature curing color coiled material paint. The method can solve the problems that the prior high-temperature baking curing paint has high curing temperature to cause energy sources waste.

Description

technical field [0001] The invention relates to a coating composition, in particular to a low-temperature curing coating for manufacturing colored steel plates and a preparation method thereof. Background technique [0002] At present, the domestic color steel plate is developing very fast. According to incomplete statistics, there are nearly 200 domestic color steel plate production lines, with a production capacity of 15 million tons / year and an actual output of 8 million tons / year. The raw material color coil coating is a high-temperature baking-curing coating, so it consumes a lot of energy in the production process. The curing temperature of the coating has a direct impact on energy consumption and production costs, while the curing temperature of conventional color coil coatings is 224-241°C, the current domestic color plate production line consumes 25 cubic meters of natural gas per ton of steel plate, and the cost of energy consumption is 100 yuan per ton of steel pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00
Inventor 高新田马金庄建林刘棋刘文洪
Owner JIANGSU LANLING POLYMER MATERIAL CO LTD
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