Preparation method and application of a bridge anti-icing type two-component polyurea waterproof coating

A waterproof coating and anti-icing technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, coatings, etc., can solve the problems of no anti-icing function, no super-hydrophobic properties, etc.

Active Publication Date: 2018-02-23
JIANGSU SOBUTE NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polyurea coatings in the current market do not have superhydrophobic properties and have no anti-icing function. If superhydrophobic technology can be combined with polyurea coating technology, it will be of great significance to develop weather-resistant and wear-resistant anti-icing coatings.

Method used

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  • Preparation method and application of a bridge anti-icing type two-component polyurea waterproof coating
  • Preparation method and application of a bridge anti-icing type two-component polyurea waterproof coating
  • Preparation method and application of a bridge anti-icing type two-component polyurea waterproof coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] (1) 200g polyether polyol N220, 18g polyester diol F1190, 50g perfluoropolyether diol Add Z-DOL (number average molecular weight 2000), 2g chain extender 2,2,3,3,4,4,5,5-octafluoro-1,6-hexanediol into the reaction vessel, vacuum degree -0.08MPa , After dehydration at 115°C for 3 hours (after dehydration, the moisture content is 0.025% measured by the Karl Fischer method), nitrogen or dry air is released to remove the vacuum, and the temperature is lowered to 68°C; 115.5g IPDI of isocyanate and 0.1g stannous octoate are added, and the temperature is constant After reacting for 30 minutes, raise the temperature to 75°C and react at a constant temperature for 2 hours. After the reaction is completed, cool down to 50°C, add 128.5g of dimethyl adipate and stir evenly to obtain a fluorine-modified polyurethane prepolymer component. The final isocyanate content of the prepolymer measured by the butylamine (GB / T 12009.4-1989) method is 6.1%;

[0102] (2) Add 400g of polyaspar...

Embodiment 2

[0106] (1) 196g polyether polyol N330, 14g polyester diol F1190, 30g perfluoropolyether diol Add Z-DOL (number average molecular weight 3000), 2.5g chain extender 1H,1H,8H,8H-dodecafluoro-1,8-octanediol into the reaction vessel, dehydrate under vacuum degree -0.09MPa, 120℃ for 2 Hours (after dehydration, the water content is 0.013% measured by the Karl Fischer method), nitrogen or dry air is released to remove the vacuum, and the temperature is lowered to 68 ° C; 141.4 g of isocyanate is added 12 MDI and catalyst 0.04g stannous octoate, react at constant temperature for 40min, heat up to 85°C for 2 hours, cool down to 60°C after completion of the reaction, add 53.5g of dimethyl succinate and stir evenly to obtain fluorine-modified polyurethane For the polymer component, the final isocyanate content of the prepolymer measured by the toluene-di-n-butylamine (GB / T12009.4-1989) method is 7.9%;

[0107] (2) Add 342g of polyaspartate NH1420, 100g of fluorocarbon resin LF-100, 3g o...

Embodiment 3

[0111] (1) 180g polyether polyol N240, 90g polyester diol Desmophen 670, 20g perfluoropolyether diol Add Z-DOL (number average molecular weight 4000), 5.4g chain extender 2,2,3,3-tetrafluoro-1,4-butanediol into the reaction vessel, dehydrate at vacuum degree -0.1MPa, 110℃ for 1.5 Hours (after dehydration, the moisture content is 0.022% measured by the Karl Fischer method), nitrogen or dry air is used to release the vacuum, and the temperature is lowered to 75°C; 305.26g of HDI trimer and 0.12g of stannous octoate catalyst are added, and after constant temperature reaction for 35min , heated up to 80°C for constant temperature reaction for 2.5 hours, cooled to 55°C after the reaction was completed, added 52.3g of ethyl acetate and 40g of butyl acetate and stirred evenly to obtain a fluorine-modified polyurethane prepolymer component, passed through toluene-di-n-butyl The final isocyanate content of the prepolymer measured by the amine (GB / T 12009.4-1989) method is 6.5%;

[01...

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PUM

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Abstract

The invention discloses a preparing method and application of anti-freezing type bi-component polyurea waterproof paint for bridges. The anti-freezing type bi-component polyurea waterproof paint for bridges is mainly prepared from a fluorine-modified polyurethane prepolymer component and a fluorine-containing composite resin component. The preparing method comprises the following steps that firstly, a polymer polyhydric alcohol, perfluoropolyether glycol, a hydroxyl functional group fluorine chain extender and aliphatic isocyanate react, then a solvent for a fluorine-modified polyurethane prepolymer is added, and the fluorine-modified polyurethane prepolymer component is obtained after even mixing; secondly, an aliphatic steric hindrance amine compound, fluorocarbon resin, an aliphatic secondary amine chain extender and an auxiliary are mixed and dispersed evenly, and the fluorine-containing composite resin component is obtained. The anti-freezing type hand scrap polyurea waterproof paint for bridges has the advantages of being high in ice removing efficiency, safe, environmentally friendly and the like, and also has the composite functions of corrosion resistance, abrasion resistance, aging prevention, surface-self-cleaning and the like.

Description

technical field [0001] The invention relates to a preparation method and application of a bridge anti-icing type two-component polyurea waterproof coating, which belongs to the technical field of building waterproof and protective coatings. Background technique [0002] Bridge engineering occupies an important position in various projects, and the construction of bridge engineering will be involved in the construction of railways and highways. Different from the road surface with a constant temperature subgrade, the lower part of the pavement of the bridge deck is facing the air and water, which often freezes before the road surface. When vehicles drive from the ice-free road to the icy bridge surface, it is easy to cause traffic accidents due to insufficient estimation of the bridge surface road conditions. Accidents, especially at night in low temperature seasons, have more sudden and serious ice damage than road ice damage, which is an important problem in bridge deck res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/02C09D5/08C08G18/66C08G18/42C08G18/48C08G18/50C08G18/62C08G18/32C08G18/12E01C7/35E01C11/24
CPCC08G18/12C08G18/3234C08G18/3821C08G18/4018C08G18/4804C08G18/5015C08G18/6279C08G18/66C08G2150/90C09D5/08C09D175/02E01C7/356E01C11/245C08G18/6529
Inventor 刘玉亭孙德文冉千平周进俊李波尹浩万赟
Owner JIANGSU SOBUTE NEW MATERIALS
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