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Modified polyurethane asphalt corrosion-resistant coating

An anti-corrosion coating and polyurethane technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, asphalt coatings, etc., can solve the problems of time-consuming, labor-intensive, short-lived moisture-permeable coatings, and high labor intensity. UV resistance, long life effect

Inactive Publication Date: 2010-12-08
索慈利
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the life of the moisture-permeable coating is not long
Moreover, when applying the coating, it is necessary to remove the rust first, which is time-consuming and labor-intensive, and the labor intensity is high; in the environment of -20°C, the coating cannot be carried out.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1) Preparation of component A: In parts by weight, take 29 parts of PM-200 polymethyl polyphenylisocyanate, 9.5 parts of IPDI, 7 parts of acrylic resin BS962, 8 parts of polyether 3031K; 2.5 parts of polyether 450, 6.5 parts of dioctyl ester, 5.5 parts of epoxy resin 6101, 0.0015 parts of phosphoric acid, 33.5 parts of solvent S1000 # , in the reaction kettle, react at 40-42°C for half an hour, then raise the temperature to 80-82°C, keep it warm for two hours, and then cool down;

[0017] 2) Preparation of component B: by weight, take 26 parts of petroleum pitch, 33 parts of coal tar pitch, 10.5 parts of cyclohexanone, 10 parts of toluene, and 8 parts of solvent S1000 # , 5.5 parts of epoxy resin 618, in the reaction kettle, keep warm at 135-140°C for two hours, cool down to room temperature; then add 13 parts of aluminum tripolyphosphate, 6.5 parts of strontium chromate, 13 parts of mica under 1250 mesh sieve Powder, 11 parts of glass phosphorus flakes under 325 mesh ...

Embodiment 2

[0020] 1) Preparation of component A: In parts by weight, take 28 parts of PM-200 polymethyl polyphenylisocyanate, 9 parts of IPDI, 6 parts of acrylic resin BS962, 7 parts of polyether 3031K; 2 parts of polyether 450, 6 parts of dioctyl ester, 5 parts of epoxy resin 6101, 0.001 part of phosphoric acid, 31 parts of industrial xylene, react in the reactor at 40-42°C for half an hour, then raise the temperature to 80-82°C, keep it warm for two hours, and then cool down ;

[0021] 2) Preparation of component B: in parts by weight, take 25 parts of petroleum pitch, 32 parts of coal tar pitch, 10 parts of cyclohexanone, 9 parts of toluene, 7 parts of industrial xylene, and 5 parts of epoxy resin 618 in the reaction In the kettle, keep warm at 135-140°C for two hours, cool down to room temperature; then add 10 parts of aluminum tripolyphosphate, 5 parts of strontium chromate, 10 parts of mica powder under 1250 mesh sieve, 10 parts of glass under 325 mesh sieve Phosphorus flakes, gri...

Embodiment 3

[0024] 1) Preparation of component A: in parts by weight, take 30 parts of PM-200 polymethyl polyphenylisocyanate, 10 parts of IPDI, 8 parts of acrylic resin BS962, 9 parts of polyether 3031K; 3 parts of polyether 450, 7 parts of dioctyl ester, 6 parts of epoxy resin 6101, 0.002 parts of phosphoric acid, 36 parts of solvent S1000 # , in the reaction kettle, react at 40-42°C for half an hour, then raise the temperature to 80-82°C, keep it warm for two hours, and then cool down;

[0025] 2) Preparation of component B: in parts by weight, take 27 parts of petroleum pitch, 34 parts of coal tar pitch, 11 parts of cyclohexanone, 10.5 parts of toluene, 9 parts of solvent S1000#, 6 parts of epoxy resin 618, in the reaction In the kettle, keep warm at 135-140°C for two hours, cool down to room temperature; then add 15 parts of aluminum tripolyphosphate, 8 parts of strontium chromate, 15 parts of mica powder under 1250 mesh sieve, 12 parts of glass under 325 mesh sieve Phosphorus flake...

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PUM

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Abstract

The invention relates to a modified polyurethane asphalt corrosion-resistant coating. In the adopted technical scheme, the corrosion-resistant coating is prepared by mixing a component A and a component B in weight ratio of 1:0.5-1.5, wherein polymethylene polyphenyl isocyanate, isophorone diisocyanate, acrylate, polyether 3031K, polyether 450, dioctyl ester, epoxy resin, phosphate, solvent No.S1000 or industrial xylene are put into a reaction kettle, and react for 0.5 hour at the temperature of 40-42 DEG C, the temperature is raised to 80-82 DEG C, the heat is preserved for 2 hours, the temperature is decreased, and then the component A is prepared; and petroleum asphalt, coal tar asphalt, cyclohexanone, toluene, solvent No.S1000 or industrial xylene and epoxy rein are put into the reaction kettle, the heat is preserved for 2 hours at the temperature of 135-140 DEG C, and the temperature is decreased to room temperature; then, aluminum triphosphate, strontium chromate, mica powder and glass flake are added, grounded, and dispersed, and then the component B is prepared. The coating adopting the invention has the advantages of strong adhesive force, no moisture permeation, strong corrosion resistance, and long service life.

Description

technical field [0001] The invention belongs to the field of coating compositions, and is a moisture-curing and reaction-curing hybrid anticorrosion coating. Background technique [0002] Anticorrosion of buried gas, tap water, seawater and oil pipelines; oil storage, gas tank inner and outer wall anticorrosion; drilling platform, marine anticorrosion and metallurgy, machinery, building materials, printing and dyeing, papermaking, textile, coal mining and other mechanical equipment anticorrosion, concrete surface of sewage pool Wait, these all need to be coated with anti-corrosion layer. At present, most of the oily and resin liquid coatings and solid powder coatings are used, such as alkyd paint and nitro paint for domestic steel pipe rust prevention. The coating contains moisture and changes in temperature, which is prone to foaming, wrinkling, cracking and peeling off. Therefore, the life of the moisture-permeable coating is not long. Moreover, when applying the coatin...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D195/00C09D5/08
Inventor 索慈利
Owner 索慈利
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