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Two-component polyurethane waterproof coating and preparation method thereof

A two-component polyurethane, waterproof coating technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of difficult to meet the design requirements of waterproof layer, anti-aging, anti-fatigue, anti-high and low temperature alternating performance and other problems, achieve The effect of high strength, high solids content, high elongation at break

Inactive Publication Date: 2009-04-29
ZHUZHOU FEILU ADVANCED MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The two-component polyurethane waterproof coating currently used is difficult to improve the contradictory indicators of tensile strength and elongation at break, and its aging resistance, fatigue resistance, and high and low temperature resistance are average, and it is difficult to meet the waterproofing of concrete bridge faces. Layer Design Requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh the following raw materials:

[0036] Component A: 65 kg of toluene diisocyanate MDI, 8.5 kg of polyether N-330, 24.0 kg of polyether N-220, 2.5 kg of amino-terminated polyether resin and 0.15 kg of stabilizer tartaric acid; component B: 25 kg of polyether It is composed of N-330, 0.75 kg antioxidant 1010, 4 kg color pigment pigment carbon black, 6 kg vulcanizing agent MOCA, 15 kg minus four oil, 14 kg chlorinated paraffin, 6 kg plasticizer DOP and 17.5 kg sericite powder.

[0037] Preparation of component A:

[0038] Toluene diisocyanate (MDI), polyether (N-330), polyether (N-220), stabilizer

[0039] (Tartaric acid) was put into a closed reactor, heated while stirring, heated to 80±5℃, after polymerization, added amino-terminated polyether resin for end-capping, and then vacuum dehydrated for 1.5 hours to prepare prepolymer (group A) Copies).

[0040] Preparation of component B:

[0041] Put polyether N-330, reduced four oil and vulcanizing agent MOCA into a closed ...

Embodiment 2

[0043] Weigh the following raw materials:

[0044] Component A: 60 kg toluene diisocyanate MDI, 10 kg polyether N-330, 16.8 kg polyether N-220, 3 kg amino-terminated polyether resin and 0.1 kg stabilizer tartaric acid composition; component B: 20 ​​kg polyether It is composed of N-330, 1.0 kg antioxidant 1010, 3 kg coloring pigment iron oxide red, 8 kg vulcanizing agent MOCA, 10 kg minus four oil, 8 kg chlorinated paraffin, 4 kg plasticizer DOP and 20 kg sericite powder.

[0045] The preparation process is the same as in Example 1.

Embodiment 3

[0047] Weigh the following raw materials:

[0048] Component A: 70 kg of toluene diisocyanate MDI, 7 kg of polyether N-330, 30.9 kg of polyether N-220, 2 kg of amino-terminated polyether resin and 0.2 kg of stabilizer tartaric acid; component B: 30 kg of polyether It is composed of N-330, 0.5 kg antioxidant 1010, 5 kg coloring pigment iron oxide yellow, 4 kg vulcanizing agent MOCA, 20 kg minus four oil, 20 kg chlorinated paraffin, 8 kg plasticizer DOP and 15 kg sericite powder.

[0049] The preparation process is the same as in Example 1.

[0050] The coating performance is tested according to GB / T19250-2003 "Polyurethane Waterproof Coating". The proportioning is based on the A component: B component = 1:2 for mixing. When the film is formed, the film is applied 2-3 times, and a (2±0.1) mm film is prepared. The film is formed under standard conditions [(23±2)℃, humidity (50±5)%], and cured for 168 hours, then Cut into standard dumbbell-shaped specimens, and use a tensile testing m...

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Abstract

The invention discloses a bicomponent polyurethane waterproof paint, which consists of a component A and a component B in weight portion, wherein the component A consists of 60 to 70 portions of toluene di-isocyanate(TDI), 7 to 10 portions of polyether N-330, 16.8 to 30.9 polyether N-220, 2 to 3 portions of amine-terminated polyether resin and 0.1 to 0.2 portion of stabilizing agent tartaric acid; and the component B consists of 20 to 30 portions of polyether N-330, 0.5 to 1 portion of antioxidant, 3 to 5 portions of tinting color, 4 to 8 portions of vulcanizing agent MOCA, 10 to 20 portions of vacuum distillate 4 line oil, 8 to 20 portions of chlorcosane, 4 to 8 portions of plasticizing agent DOP and 15 to 20 portions of sericite in powder. The invention also discloses a preparation method for the paint. The bicomponent polyurethane waterproof paint has the advantages of high solid content, high strength, and high elongation at break, and is especially suitable to be used as a waterproof layer of concrete bridge decks of high-speed railways, highways, lines for passenger transportation and lines for both passenger and freight transportation.

Description

Technical field [0001] The present invention relates to the field of building waterproof materials. Specifically, the present invention is a novel synthetic polymer waterproof material and a preparation method thereof, and more specifically, the present invention is a two-component polyurethane waterproof coating and a preparation method thereof. Background technique [0002] At present, in recent years, the Ministry of Railways has proposed a "passenger and freight diversion" plan. Therefore, railway passenger dedicated lines, high-speed railways, intercity tracks and other line projects have developed rapidly. Most of these lines are concrete bridges with a design life of 50 years. In order to ensure that the steel bars in the concrete bridge are not corroded, the requirements for the waterproof layer of the concrete bridge are quite high. At present, two-component polyurethane waterproof coatings are used more. This polyurethane waterproof coating can be directly used as a wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D5/00C04B41/48
Inventor 章卫国
Owner ZHUZHOU FEILU ADVANCED MATERIAL TECH CO LTD
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