A high-elastic anti-wind, sand, wear-resistant and weather-resistant topcoat for high-speed trains and its preparation method

A high-speed train and high-elasticity technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as poor environmental capabilities, and achieve strong hiding power, high solar reflection coefficient, and good wind and sand erosion resistance.

Active Publication Date: 2018-07-31
CRRC QINGDAO SIFANG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a high-elastic anti-wind, sand, wear-resistant and weather-resistant topcoat for high-speed trains and a preparation method, aiming at the shortcomings of the high-speed train protective coating system in western my country that have poor environmental capabilities, and improve the anti-wind and sand of the train protective coating Erosion and weather resistance to prolong the service life of the coating in the wind and sand environment

Method used

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  • A high-elastic anti-wind, sand, wear-resistant and weather-resistant topcoat for high-speed trains and its preparation method
  • A high-elastic anti-wind, sand, wear-resistant and weather-resistant topcoat for high-speed trains and its preparation method
  • A high-elastic anti-wind, sand, wear-resistant and weather-resistant topcoat for high-speed trains and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] First, the modified nano-silica is prepared by the organic-inorganic hybrid modification method, and the colloidal solution containing nano-silica, isocyanate N3200 and epoxy resin E51 are mixed and reacted to obtain an intermediate product, and then the epoxy group is opened by the alkali The ring reaction is used to obtain organic-inorganic hybrid nano-silica grafted on the surface with flexible chain segments of hydroxyl groups.

[0047] Carry out the preparation of high-elastic anti-wind, sand, wear-resistant and weather-resistant topcoat for high-speed trains, the method steps are as follows:

[0048] (1) In terms of mass percentage, 35wt% of fluorine-modified acrylic resin GK570, 20wt% of FTH polyester resin, 1wt% of polyamide wax, 1.5wt% of BYK-530A, 1.5wt% of BYK- 320 and 5wt% mixed solvent (the volume ratio of the three components in the mixed solvent is xylene: ethyl acetate: cyclohexanone = 2:1:1) into the dispersion tank in turn, stirring;

[0049] (2) Slow...

Embodiment 2

[0053] Firstly, the modified nano-silica is prepared by the organic-inorganic hybrid modification method, and the colloidal solution containing nano-silica, isocyanate N3800 and epoxy resin F51 are mixed and reacted to obtain an intermediate product, and then the epoxy group is opened by the alkali The ring reaction is used to obtain organic-inorganic hybrid nano-silica grafted on the surface with flexible chain segments of hydroxyl groups.

[0054] Carry out the preparation of high-elastic anti-wind, sand, wear-resistant and weather-resistant topcoat for high-speed trains, the method steps are as follows:

[0055] (1) In terms of mass percentage, 40wt% of fluorine-modified acrylic resin GK570, 15wt% of FTH polyester resin, 1wt% of organic bentonite, 1wt% of Deqian 6800, 1wt% of EFKA-2022 and 7wt% % of the mixed solvent (the volume ratio of the three components in the mixed solvent is xylene: ethyl acetate: cyclohexanone=2:3:1) is poured into the dispersion tank in turn, and s...

Embodiment 3

[0060] Firstly, the modified nano-silica is prepared by the organic-inorganic hybrid modification method, and the colloidal solution containing nano-silica, isocyanate N75 and epoxy resin E54 are mixed and reacted to obtain an intermediate product, and then the epoxy group is opened by the alkali The ring reaction is used to obtain organic-inorganic hybrid nano-silica grafted on the surface with flexible chain segments of hydroxyl groups.

[0061] Carry out the preparation of high-elastic anti-wind, sand, wear-resistant and weather-resistant topcoat for high-speed trains, the method steps are as follows:

[0062] (1) In terms of mass percentage, 45wt% of fluorine-modified acrylic resin GK570, 10wt% of FTH polyester resin, 0.5wt% of fumed silica, 1wt% of Deqian 6800, 0.5wt% of BYK -320 and 10wt% of the mixed solvent (the volume ratio of the three components in the mixed solvent is xylene: ethyl acetate: cyclohexanone = 1:1.3:1) is poured into the dispersion tank in turn, and st...

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Abstract

The invention belongs to the technical field of metal surface paint and in particular relates to high-elasticity, wind-sand-resisting, wear-resisting and weather-resisting finishing paint for a high-speed train and a preparation method. According to the high-elasticity, wind-sand-resisting, wear-resisting and weather-resisting finishing paint for the high-speed train, elastic polyester resin and fluorine-modified acrylic resin form a base film material; then pigments, lamellar body fillers and modified nano silicon dioxide are added into the base film material, and an auxiliary agent, a mixing solvent and a curing agent are mixed with the mixture to form the surface layer coating. By adopting the fluorine-modified acrylic resin and the elastic polyester resin, which have good weather resistance, the elasticity, toughness and weather resistance of a coating layer are improved, so that the coating layer has very good wind-sand scouring resistance, and the service life of the coating layer is prolonged; meanwhile, modified nano fillers are introduced, so that the wear resistance and adhesion property of the coating layer are improved, and the wind-sand scouring resistance and weather resistance of the coating layer are realized.

Description

technical field [0001] The invention belongs to the technical field of metal surface coatings, and in particular relates to a highly elastic, sand-resistant, abrasion-resistant and weather-resistant topcoat for high-speed trains and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of railway traffic, taking high-speed rail trains has become one of the best choices for fast travel all over the country, and the corresponding technologies related to high-speed rail trains are also developing rapidly. Due to my country's vast territory and different climate conditions, trains often pass through areas with relatively extreme climates. Since the material of the car body is changed from traditional carbon steel to light aluminum alloy or other aviation materials, in order to ensure high-speed driving safety and reduce maintenance costs, There are increasingly higher requirements for coatings used on high-speed rail train bodies....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/06C09D7/62C08G18/40C08G18/62C08G18/42
CPCC08G18/4063C08G18/4238C08G18/6279C08G2150/50C08K3/30C08K3/346C08K3/36C08K9/04C08K9/08C08K13/06C08K2003/3045C08K2201/011C09D7/61C09D7/62C09D175/06C08L77/00C08K3/34
Inventor 孙琳林化强林鹏邓小军
Owner CRRC QINGDAO SIFANG CO LTD
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