Solvent-free polyurethane paint and manufacture method thereof

A solvent-free polyurethane and manufacturing method technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, coatings, etc., can solve the problems of short application period of coatings, fast curing speed of coatings, unfavorable small area construction and repair, etc. Impactful effect

Active Publication Date: 2017-01-18
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are some problems in the actual application of solvent-free polyurethane coatings. For example, it requires a special high-pressure airless sprayer for construction. The viscosity of solvent-free coatings requires heating spraying, which requires high construction technology.
The fast curing speed of the coating also results in a short pot life of the coating, which is not conducive to small-area construction and repair work on site

Method used

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  • Solvent-free polyurethane paint and manufacture method thereof
  • Solvent-free polyurethane paint and manufacture method thereof
  • Solvent-free polyurethane paint and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] The steps of the manufacturing method of the solvent-free polyurethane coating of Example 1 are as follows, and the proportion of each component is parts by weight:

[0098] Step (1), add 0.14 parts of molecular sieve activation powder, 0.0014 parts of defoamer BYK057 and 0.0014 parts of dispersant BYK163 to 0.14 parts of polyol Sovermol 750, and disperse for 1 hour at high shear (2500r / min) to obtain a dehydrating agent;

[0099] Step (2): Put 0.8 parts of quartz powder, 0.3 parts of talc powder, 0.26 parts of titanium dioxide, 0.41 parts of barium sulfate and 0.004 parts of carbon black in a high temperature box at 150°C for 12 hours to remove water to obtain paint pigments and fillers;

[0100] Step (3), add 0.53 parts of polyol Sovermol 750, 0.15 parts of liquid petroleum resin, 0.018 parts of dewatering agent ALT-201, 0.018 parts of defoaming agent BYK057, 0.018 parts of dispersant BYK163 and 0.016 parts of leveling agent EFKA-3777 Add 1 part of polyol Sovermol 805 to 1 p...

Embodiment 2

[0108] The steps of the manufacturing method of the solvent-free polyurethane coating of this embodiment 2 are as follows, and the ratio of each component is parts by weight:

[0109] Step (1), adding 0.15 parts of molecular sieve activation powder, 0.0015 parts of defoamer BYK057 and 0.0015 parts of dispersant BYK163 to 0.13 parts of polyol Sovermol 750, and high shear (2500r / min) dispersion for 1 hour to obtain a dehydrating agent;

[0110] In step (2), 0.75 parts of quartz powder, 0.35 parts of talc powder, 0.3 parts of titanium dioxide, 0.35 parts of barium sulfate and 0.005 parts of carbon black are placed in a 150°C high temperature box for heating and dewatering for 12 hours to obtain paint pigments and fillers;

[0111] Step (3), add 0.55 parts of polyol Sovermol 750, 0.2 parts of liquid petroleum resin, 0.02 parts of dewatering agent ALT-201, 0.014 parts of defoamer BYK057, 0.014 parts of dispersant BYK163 and 0.02 parts of leveling agent EFKA-3777 Add 1 part of polyol Sover...

Embodiment 3

[0120] The steps of the manufacturing method of the solvent-free polyurethane coating of this embodiment 3 are as follows, and the proportion of each component is parts by weight:

[0121] Step (1), adding 0.12 parts of molecular sieve activation powder, 0.001 parts of defoamer BYK057 and 0.002 parts of dispersant BYK163 to 0.1 part of polyol Sovermol 750, and high shear (2500r / min) dispersion for 1 hour to obtain a dehydrating agent;

[0122] Step (2): Put 0.7 parts of quartz powder, 0.25 parts of talc powder, 0.25 parts of titanium dioxide, 0.35 parts of barium sulfate and 0.003 parts of carbon black in a high temperature box at 120°C for 15 hours to obtain paint pigments and fillers;

[0123] Step (3), add 0.5 parts of polyol Sovermol 750, 0.1 parts of liquid petroleum resin, 0.015 parts of water remover ALT-201, 0.0145 parts of defoamer BYK057, 0.013 parts of dispersant BYK163 and 0.015 parts of leveling agent EFKA-3777 Add 1 part of polyol Sovermol 805 to 1 part of polyol Soverm...

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Abstract

The invention provides a solvent-free polyurethane paint and a manufacture method thereof. The solvent-free polyurethane paint comprises a first component and a second component; the component A comprises the following raw materials: 1.6-1.7 parts of polyester polyol and / or polyether polyol, 0.1-0.2 parts of liquid petroleum resin, 1.55-1.96 parts of pigments and fillers, 0.12-0.16 parts of molecular sieve activated powder, 0.015-0.02 parts of a water-removal additive, 0.03-0.04 parts of an antifoaming agent, 0.015-0.02 parts of a dispersant, and 0.015-0.02 parts of a levelling agent; and the component B comprises polyisocyanate. The paint has proper viscosity, the working life can reach 3h, the good construction performance can be guaranteed, the paint can be used for coating construction at normal temperature. the coating has good physical and chemical properties, the impact resistance is greater than 10 J, anti-15 DEG bending coating cannot generate cracks, the salt spray-resistant coating with 2000 h is undamaged, and the cathode stripping resistant performance is less than 6 mm. the paint can be used for anticorrosion of structures such as anticorrosion in large-scale crude oil storage tanks, anticorrosion outside the underground pipelines, and normal temperature coating construction of sea port concrete surface.

Description

Technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, and particularly relates to a solvent-free polyurethane coating and a manufacturing method thereof. Background technique [0002] Polyurethane coating is a long-lasting high-performance anti-corrosion coating, which has been successfully applied in some harsh corrosive environments. Solvent-free coatings are safe and environmentally friendly, no harmful gases volatilize, and avoid pinholes on the surface of the coating film caused by solvent volatilization during the curing process of solvent-based coatings, thereby improving the permeability and shielding properties of the coating. At present, domestic large-scale crude oil storage tanks internal anticorrosion, buried pipeline external anticorrosion, seaport concrete surface and other projects are actively promoting the application of solvent-free polyurethane anti-corrosion coatings. [0003] Solvent-free polyurethane coatings are cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D175/06C09D157/02C09D5/08C09D7/12C08G18/42C08G18/48
CPCC08G18/4018C08G18/42C08G18/48C08L2205/02C08L2205/03C09D5/08C09D175/06C09D175/08C08L75/06C08L57/02C08K13/02C08K3/36C08K3/34C08K2003/2241C08K2003/3045C08K3/04C08L75/08
Inventor 韩忠智郭晓军段绍明李石刘浩亮崔灿灿丁超王磊
Owner BC P INC CHINA NAT PETROLEUM CORP
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