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High-iron special flame-resistant polyurethane waterproof coating and preparation method thereof

A polyurethane waterproof and coating technology, which is applied in polyurea/polyurethane coatings, fireproof coatings, coatings, etc., can solve the problems of non-fireproof, flame-retardant, low-temperature flexibility, etc., and achieve easy end closure, low human toxicity, and good extensibility Effect

Inactive Publication Date: 2010-01-06
天津市耀新科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The second purpose of the present invention is to disclose the preparation method of flame-retardant polyurethane waterproof coating for high-speed rail. The flame-retardant polyurethane waterproof coating for high-speed rail production of the present invention has high production process efficiency, energy saving, and low cost. The product conforms to environmental protection and Ministry of Railways " "Provisional Technical Conditions for Concrete Deck Waterproof Layer of Passenger Dedicated Line Bridges" requires quality standards for the durability of bridge structures, which can be constructed at room temperature, and overcome the shortcomings of existing polyurethane waterproof coatings that cannot be fire-resistant and flame-retardant and have poor low-temperature flexibility

Method used

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  • High-iron special flame-resistant polyurethane waterproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A component: polyether polyol N220 40 parts

[0046] Polyether polyol N330 35 parts

[0047] 22 parts of diphenylmethane diisocyanate (MDI)

[0048] B component: liquid filler (petroleum resin C5) 35 parts

[0049] Composite curing agent (MOCA / N220) 45 parts (7N MOCA / 1N OH )

[0050] Powder filler (light calcium 800 mesh) 25 parts

[0051] Catalyst organotin 0.01% of prepolymer

[0052] UV absorber UV531, 1 part of material B

[0053] Antioxidant 264, 1 part of material B

[0054]Flame Retardant Chlorinated Paraffin-70, 12 parts

[0055] 10 parts dibutyl phthalate

[0056] Preparation:

[0057] a. Add mixed polyether (N220, N330) into a jacketed reactor with stirring, heat it to (105±5)°C for vacuum dehydration for 1 hour, then lower it to below 60°C, add metered MDI, and react After 30 minutes, continue to raise the temperature to (70±5)°C, react at a constant temperature for 3 hours, cool down to below 60°C, and pack it out to obtain the isocyanate group-t...

Embodiment 2

[0063] A component:

[0064] Polyether polyol N220 20 parts

[0065] Polyether polyol N330 60 parts

[0066] 28 parts of diphenylmethane diisocyanate (MDI)

[0067] B component:

[0068] Liquid filler (petroleum resin C5) 30 parts

[0069] Composite curing agent (MOCA / N220) 45 parts (7N MOCA / 1N OH )

[0070] Powder filler (light calcium 800 mesh) 25 parts

[0071] Catalyst organotin 0.01% of prepolymer

[0072] UV absorber UV531, 3% of material B

[0073] Antioxidant 264, 5% of material B

[0074] Flame Retardant Chlorinated Paraffin-70, 15 parts

[0075] Dioctyl phthalate 8 parts

[0076] The preparation method is the same as in Example 1.

Embodiment 3

[0078] A component:

[0079] Polyether polyol N220 60 parts

[0080] Polyether polyol N330 20 parts

[0081] 35 parts of diphenylmethane diisocyanate (MDI)

[0082] B component:

[0083] Liquid filler (petroleum resin C5) 35 parts

[0084] Composite curing agent (MOCA / N220) 60 parts (9N MOCA / 1N OH )

[0085] Powder filler (light calcium 800 mesh) 25 parts

[0086] Catalyst organotin 0.01% of prepolymer

[0087] UV absorber UV531, 2% of material B

[0088] Antioxidant 264, 5% of material B

[0089] Flame Retardant Chlorinated Paraffin-70, 12 parts

[0090] Dioctyl phthalate 10 parts

[0091] The preparation method is the same as in Example 1.

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Abstract

The invention discloses a high-iron special flame-resistant polyurethane waterproof coating and a preparation method thereof. The high-iron special flame-resistant polyurethane waterproof coating comprises an A component of an isocyanate group terminated polyurethane prepolymer and a B component of a dense cure-crosslinking agent. The prepared double-component high-strength flame-resistant polyurethane waterproof coating has tensile strength of 3.5-10MPa, at-break elongation of 450-600 percent and concrete interface boning strength greater than 2.5MPa and is used by uniformly mixing the A component and the B component according to a certain proportion and coating the mixture on a concrete waterproof plane to solidify into an integral waterproof coating with elasticity, firmness and durability. The coating is suitable for concrete ballast bridge floors and non-ballast bridge floors of high-iron passenger special line bridges and railway bridge culvert waterproof engineering and is suitable for the waterproofness of other buildings and constructions with higher requirements on waterproof performance.

Description

technical field [0001] The invention relates to a polyurethane waterproof coating for construction, in particular to an environment-friendly high-performance flame-retardant polyurethane waterproof coating and a preparation method thereof. The coating is suitable for waterproofing concrete ballasted bridge decks, ballastless bridge decks and railway bridge culverts of high-speed railway passenger dedicated line bridges It is also suitable for the application of other buildings and structures with high requirements on waterproof performance. Background technique [0002] The Department of Science and Technology of the Ministry of Railways, based on the application of the waterproof layer of high-speed railway bridges at home and abroad and the quality standard requirements for the durability of bridge structures of passenger dedicated line bridges in the "Interim Technical Conditions for Concrete Bridge Deck Waterproof Layer of Passenger Dedicated Line Bridges", aimed at balla...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D157/02C09D7/12C09D5/00C09D5/18
Inventor 刘耀俭许晓秋刘伟朝刘伟
Owner 天津市耀新科技发展有限公司
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