Abrasion-resistant single-component polyurethane coating and preparation method thereof

A polyurethane coating, a single-component technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor resistance to heavy pressure, slow drying speed, etc., and achieve the effect of high hardness and bright and beautiful paint film

Inactive Publication Date: 2019-04-09
长沙盾甲新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a wear-resistant single-component polyurethane coating and its preparation method in order to overcome the problems of slow drying at low temperature and relatively poor resistance to heavy pressure in the prior art. Advantages of less amount, good corrosion resistance, fast curing, low VOC, non-slip, good wear resistance and high strength

Method used

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  • Abrasion-resistant single-component polyurethane coating and preparation method thereof
  • Abrasion-resistant single-component polyurethane coating and preparation method thereof
  • Abrasion-resistant single-component polyurethane coating and preparation method thereof

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preparation example Construction

[0030] In a second aspect, the present invention provides a method for preparing a wear-resistant one-component polyurethane coating, comprising the following steps:

[0031] (1) Add polyester polyol into the reaction kettle, heat to 100-120°C, vacuum dehydrate for 1-2h, cool to room temperature and fill with nitrogen to store for later use;

[0032] (2) adding isocyanate into the reaction kettle, stirring and heating, raising the temperature to 60-90°C, and reacting for 2-5h;

[0033] (3) Add end-capped amino resin, stir and keep at 60-90°C for 1-2h, then add fillers, additives and solvents under stirring, stir and disperse for 0.2-1h, discharge and seal for storage, and obtain the wear-resistant single Component polyurethane coatings;

[0034] The mass percent of above-mentioned each component is:

[0035]

[0036] In the present invention, 4,4'-diphenylmethane diisocyanate, polymethylene polyphenyl polyisocyanate, diphenylmethane diisocyanate, toluene diisocyanate, hex...

Embodiment 1

[0039] Add 28 parts by mass of polyethylene adipate into the reaction kettle, heat to 110° C., vacuum dehydrate for 1 hour, cool to room temperature and fill with nitrogen for storage.

[0040] (2) Add 9.5 parts by mass of toluene diisocyanate into the reaction kettle, heat with stirring, raise the temperature to 75° C., and react for 3.5 hours.

[0041] (3) Add 7.5 parts by mass of salicylaldimine, stir and keep warm for 1.5h, then add 6.5 parts by mass of aluminum oxide and 50 parts by mass of xylene under stirring, stir and disperse for 0.5h, then discharge and seal for preservation, to obtain a polyurethane coating .

Embodiment 2

[0043] (1) Add 10 parts by mass of polyethylene adipate and 15 parts by mass of polyethylene adipate-propylene glycol into the reaction kettle, heat to 105°C, vacuum dehydrate for 1.5h, cool to room temperature and Store in nitrogen gas for later use.

[0044] (2) Add 3 parts by mass of 4,4'-diphenylmethane diisocyanate and 5 parts by mass of hexamethylene diisocyanate into the reaction kettle, stir and heat, raise the temperature to 70°C, and react for 4 hours.

[0045] (3) Add 7 parts by mass of N, N'-(methyl-butylmethylene)-diethylenetriamine, stir and insulate for 1.5h, then add 5 parts by mass of chopped glass fiber and 25 parts by mass under stirring Parts by mass of acetone and 30 parts by mass of ethyl acetate were stirred and dispersed for 0.3 h, and then discharged and sealed for storage to obtain a polyurethane coating.

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Abstract

The invention relates to the field of polyurethane coating, and discloses an abrasion-resistant single-component polyurethane coating and a preparation method thereof. The coating is prepared from thefollowing components in percentage by weight: 20-35 percent of polymer polyol, 6-15 percent of isocyanate, 5-12 percent of terminated amino resin, 2-10 percent of filler and 38-60 percent of solvent.The preparation method comprises the following steps: (1) adding the polyester polyol into a reaction kettle, heating to 100-120 DEG C, dehydrating for 1 hour in vacuum, cooling to room temperature,introducing nitrogen, and storing for later use; (2) adding the isocyanate into the reaction kettle, stirring, heating to 60-90 DEG C, and reacting for 2-5 hours; and (3) adding the terminated amino resin, stirring, insulating for 1-2 hours, adding the filler, additive and solvent under a stirring state, stirring and dispersing for 0.5 hour, discharging, and sealing for storage. The coating has the advantages of convenience in construction, small material usage, good preservation performance, quick curing, low volatile organic compounds, environmental friendliness, no toxicity, skid prevention, vehicle driving and ground friction noise reduction and durability.

Description

technical field [0001] The invention relates to the field of polyurethane coatings, in particular to a wear-resistant single-component polyurethane coating and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of my country's industry and the continuous advancement of urbanization, large-scale industrial workshops, supermarkets, garages, cultural and entertainment venues and other buildings have emerged, which has driven the rapid development of floor coatings. Modern buildings require the ground to be clean and beautiful, wear-resistant and heavy-pressure resistant, oil-resistant and anti-corrosion. Different requirements for building floors. At present, under the dual guidance of national industrial policies and environmental protection policies and regulations, environmentally friendly floor coatings with low volatile organic compounds, non-toxic and pollution-free are more and more popular. These coatings have more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06C09D7/61
CPCC08K2003/2227C08K2003/2244C09D7/61C09D175/06C08K3/22C08K3/34C08K3/042C08K3/04C08K3/36
Inventor 雷静裘航盛
Owner 长沙盾甲新材料科技有限公司
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