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Two-component polyurethane marking paint and preparation method thereof

A two-component polyurethane and marking paint technology, applied in the field of paint, can solve the problems of paint film thickness and hardness decrease, large performance difference, flexibility and adhesion decrease, etc., to achieve increased adhesion and flexibility, reflective Long-lasting and long-lasting effects

Active Publication Date: 2022-05-24
SHANXI ZHONGTU TRAFFIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

General polyurethane marking coatings cannot meet excellent standards in film thickness, hardness, flexibility, and adhesion. When the film thickness increases, the hardness of the marking line increases, but the flexibility and adhesion will decrease significantly. When adjusting the ratio of paint formula to increase flexibility and adhesion, the thickness and hardness of the paint film will decrease accordingly
[0005] The properties of hydroxyacrylic resins have a great influence on the dry rate, hardness and water resistance of two-component polyurethane coatings. More or less defects seriously affect the performance of road markings

Method used

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  • Two-component polyurethane marking paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Weigh 1.5kg of Degaroute 465 acrylic resin, mix it with 3kg of hydroxy acrylic resin, add 0.05kg of initiator tert-butyl peroxybenzoate, heat up to 90°C and react for 0.5h, then add 0.5kg of Degaroute 465 acrylic resin and 0.005kg of resistance. The polymerization agent benzoquinone was continued to react for 1h.

[0039] After the reaction, ethyl acetate was added to the reaction product, diluted to a solid content of 50%, and the insoluble matter was filtered off to obtain a modified hydroxyacrylic resin.

[0040] The appearance of the modified hydroxy acrylic resin prepared above is colorless and transparent liquid. After testing, the chromaticity (iron-cobalt colorimetry) is less than or equal to 1, the viscosity (coating-4 cups) is 95s, the fineness is less than or equal to 15 μm, and the solid content is 50±1%.

[0041] Weigh 0.02kg of defoamer BYK-023, 0.03kg of leveling agent BYK-308, 0.4kg of titanium dioxide, 1.8kg of internally mixed glass beads, 0.03kg of di...

Embodiment 2

[0045]Weigh 1.65kg of Degaroute 465 acrylic resin, mix it with 4kg of hydroxy acrylic resin, add 0.06kg of initiator tert-butyl peroxybenzoate, heat up to 105°C and react for 0.75h, then add 0.35kg of Degaroute 465 acrylic resin and 0.035kg of resistance. The polymerization agent benzoquinone continued to react for 1.25h.

[0046] After the reaction, ethyl acetate was added to the reaction product, diluted to a solid content of 55%, and the insoluble matter was filtered off to obtain a modified hydroxyacrylic resin.

[0047] The appearance of the modified hydroxy acrylic resin prepared above is colorless and transparent liquid. After testing, the chromaticity (iron-cobalt colorimetry) is less than or equal to 1, the viscosity (coating-4 cups) is 95s, the fineness is less than or equal to 15 μm, and the solid content is 55±1%.

[0048] Weigh 0.03kg of defoamer BYK-023, 0.035kg of leveling agent BYK-308, 0.5kg of titanium dioxide, 1.5kg of internally mixed glass beads, 0.04kg of...

Embodiment 3

[0052] Weigh 1.8kg Degaroute 465 acrylic resin, mix with 5kg hydroxy acrylic resin, add 0.07kg initiator tert-butyl peroxybenzoate, heat up to 120°C and react for 1h, then add 0.2kg Degaroute 465 acrylic resin and 0.07kg polymerization inhibitor agent benzoquinone, and continue to react for 1.5h.

[0053] After the reaction, ethyl acetate was added to the reaction product, diluted to a solid content of 45%, and the insoluble matter was filtered off to obtain a modified hydroxyacrylic resin.

[0054] The appearance of the modified hydroxy acrylic resin prepared above is colorless and transparent liquid. After testing, the chromaticity (iron-cobalt colorimetry) is less than or equal to 1, the viscosity (coating-4 cups) is 95s, the fineness is less than or equal to 15 μm, and the solid content is 45±1%.

[0055] Weigh 0.04kg of defoaming agent BYK-023, 0.04kg of leveling agent BYK-308, 0.6kg of titanium dioxide, 2kg of internally mixed glass beads, 0.05kg of dispersant BYK-P105 a...

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Abstract

The invention discloses a bi-component polyurethane marking coating which is composed of 30 parts by mass of a component A and 5-6 parts by mass of a component B. The component A is prepared by mixing 20-25 parts by mass of modified hydroxy acrylic resin, 0.2-0.4 part by mass of a defoaming agent, 0.3-0.4 part by mass of a flatting agent, 4-6 parts by mass of titanium dioxide, 15-20 parts by mass of internally mixed glass beads, 0.3-0.5 part by mass of a dispersing agent and 40-50 parts by mass of filler. The component B is HDI biuret, and during construction, the component A and the component B are mixed for use. According to the marking paint, the hardness, impact strength, gloss, paint film thickness and water resistance of road marking are improved, meanwhile, the adhesive force and flexibility of the road marking can be improved, and the service life of the road marking is prolonged.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a road marking paint, in particular to a two-component polyurethane marking paint and a preparation method thereof. Background technique [0002] With the rapid development of highway construction in my country and the increasingly busy bus and highway traffic, the demand for traffic markings has also increased sharply. my country's road marking coatings started relatively late. For many years, ester glue paints with poor performance have been mainly used. High-performance coatings used in highways also need to rely on imports. Therefore, there is an urgent need for a road marking paint with wear resistance and excellent reflective properties. [0003] Two-component acrylic polyurethane coating is a new type of coating that has developed rapidly in recent years. Its molecular structure also includes urethane bond, urea bond, biuret bond and carbon-carbon long chain segment of acr...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/33C09D7/61
CPCC09D175/04C09D5/004C09D7/61C09D7/70C08K2003/2241C08K3/22C08K7/20
Inventor 薛晓东陈瑞峰李鹏牛文斌侯涛王艳飞郝伟珍
Owner SHANXI ZHONGTU TRAFFIC TECH CO LTD
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