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A kind of high-strength environment-friendly polyurethane flame-retardant waterproof coating and preparation method thereof

A waterproof coating and polyurethane technology, applied in polyurea/polyurethane coatings, fireproof coatings, coatings, etc., can solve problems such as volatile, reduced flame retardant effect, group dechaining, etc., achieve excellent thermal stability, improve Flame retardant effect, the effect of ensuring flame retardant performance

Active Publication Date: 2017-08-25
成都市嘉洲新型防水材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, in the above-mentioned water-based polyurethane, the group that acts as a flame retardant during the chemical reaction is easily unable to be smoothly connected to the polyurethane molecular chain due to the hydrolysis of the alcohol, that is, the phenomenon of group dechaining occurs, which greatly reduces its flame retardant effect.
In addition, toluene-2,4-diisocyanate or isophorone diisocyanate is used as the main agent in the above-mentioned water-based polyurethane. The reaction toxicity of the above-mentioned polyvalent isocyanate is relatively high, and it is extremely volatile during the reaction process, and its by-products are easily Adhesion to the coating film seriously affects the environmental performance of polyurethane

Method used

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  • A kind of high-strength environment-friendly polyurethane flame-retardant waterproof coating and preparation method thereof

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preparation example Construction

[0045] The preparation method of the high-strength environment-friendly polyurethane flame-retardant waterproof coating of the present invention comprises the following steps:

[0046] 1. Preparation of A component

[0047] a1: Weigh the corresponding raw materials according to the above ratio for use;

[0048] b1: Add the flame retardant polyether polyol into the closed reaction kettle with agitator and vacuum pump at normal temperature and pressure, raise the temperature in the reaction kettle to 80-90℃ while stirring, start the vacuum pump, and make the negative pressure in the reaction kettle be -0.07 to -0.05MPa;

[0049] c1: Continue to raise the temperature in the reactor to 100-110°C, and dehydrate at this temperature for 1-3 hours;

[0050] d1: After step c1 is completed, reduce the temperature of the reactor to 55-65°C, add liquefied diphenylmethane diisocyanate while stirring, then raise the temperature of the reactor to 75-85°C, and the reaction time is 1.5-3 hou...

Embodiment 1

[0065] The high-strength environment-friendly polyurethane flame-retardant waterproof coating of the present invention comprises A component and B component,

[0066] Component A includes difunctional flame retardant polyether polyol, trifunctional flame retardant polyether polyol, liquefied diphenylmethane diisocyanate, and chlorinated paraffin. 10 parts of high flame retardant polyether polyol, 30 parts of trifunctional flame retardant polyether polyol, 20 parts of liquefied diphenylmethane diisocyanate, 10 parts of chlorinated paraffin;

[0067] Component B includes trifunctional flame retardant polyether polyol, aromatic oil, chlorinated paraffin, liquid dimethylthiotoluenediamine, ammonium polyphosphate, bromine antimony flame retardant, phosphate ester, aluminum hydroxide, the above components The contents are calculated in parts by mass: 10 parts of trifunctional flame-retardant polyether polyol, 5 parts of aromatic oil, 10 parts of chlorinated paraffin, 10 parts of liq...

Embodiment 2

[0087] The high-strength environment-friendly polyurethane flame-retardant waterproof coating of the present invention comprises A component and B component,

[0088] Component A includes difunctional flame retardant polyether polyol, trifunctional flame retardant polyether polyol, liquefied diphenylmethane diisocyanate, and chlorinated paraffin. 20 parts of high flame retardant polyether polyol, 40 parts of trifunctional flame retardant polyether polyol, 30 parts of liquefied diphenylmethane diisocyanate, 20 parts of chlorinated paraffin;

[0089] Component B includes trifunctional flame retardant polyether polyol, aromatic oil, chlorinated paraffin, liquid dimethylthiotoluenediamine, liquid diethyltoluenediamine, ammonium polyphosphate, bromide antimony flame retardant, phosphate ester , aluminum hydroxide, magnesium hydroxide, the contents of the above components are calculated in parts by mass: 20 parts of trifunctional flame retardant polyether polyol, 20 parts of aromati...

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Abstract

The invention discloses a high-strength environment-friendly polyurethane flame-retardant waterproof coating, which includes A component and B component. The A component includes flame-retardant polyether polyol, liquefied diphenylmethane diisocyanate, and chlorinated paraffin. The contents are calculated in parts by mass: 40-60 parts of flame-retardant polyether polyol, 20-30 parts of liquefied diphenylmethane diisocyanate, and 10-20 parts of chlorinated paraffin; component B includes flame-retardant polyether polyol , aromatic hydrocarbon oil, chlorinated paraffin, liquid vulcanizing agent, flame retardant, flame retardant filler, the contents of the above components are calculated in parts by mass: 10-20 parts of flame-retardant polyether polyol, 5-20 parts of aromatic oil, 10-20 parts of chlorinated paraffin, 10-20 parts of liquid vulcanizing agent, 8-16 parts of flame retardant, 30-40 parts of flame retardant filler. The polyurethane flame-retardant waterproof coating of the invention has excellent waterproof performance and flame-retardant performance.

Description

technical field [0001] The invention relates to the manufacturing field of architectural coatings, in particular to a high-strength environment-friendly polyurethane flame-retardant waterproof coating and a preparation method thereof. Background technique [0002] Polyurethane waterproof coatings are currently widely used architectural coatings, which are mainly divided into one-component polyurethane waterproof coatings and two-component polyurethane waterproof coatings. One-component polyurethane waterproof coating is a coating obtained by modifying polyurethane resin base material through cross-linking reaction. It has good storage stability, mechanical properties of coating film, water resistance, solvent resistance and aging resistance. The two-component polyurethane waterproof coating is a coating obtained by separating the isocyanate prepolymer and the hydroxyl-containing resin, mixing them during construction and producing a curing reaction, which has low film-formin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D5/18C09D7/12C08G18/76C08G18/50
Inventor 张玉兰付绍华
Owner 成都市嘉洲新型防水材料有限公司
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