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Thixotropic bi-compound polyurethane waterproof paint capable of being constructed at high temperature and preparation method thereof

A two-component polyurethane, high-temperature construction technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problem that the environmental protection has not been greatly improved, and achieve excellent storage stability, low TDI content, and construction operation long time effect

Inactive Publication Date: 2016-02-17
上海北新月皇新材料集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN104403547A reports environment-friendly high-performance polyurethane waterproof coating and its preparation method, but the environmental protection of this waterproof coating has not been greatly improved in fact

Method used

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  • Thixotropic bi-compound polyurethane waterproof paint capable of being constructed at high temperature and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation method of the thixotropic two-component polyurethane waterproof coating of high temperature construction adopts the following steps:

[0036] Preparation of component A In a 1000mL four-neck flask equipped with a stirrer, condenser, thermometer, and constant pressure dropping funnel, first add 60 parts of polyether diol (2000D) and 15 parts of polyether triol (330N) part and 10 parts of chlorinated paraffin, stirred and heated to 105°C-115°C, vacuum dehydrated for 2-3 hours; cooled the above mixture to 60-70°C, added inhibitor and stirred evenly, then added 5 parts of toluene diisocyanate, 70 After reacting at ℃-80℃ for 1.5 hours, add 20 parts of diphenylmethane diisocyanate, and react at 70℃-80℃ for 1.5 hours; lower the temperature to 50℃-60℃, add 0.1 part of defoamer, and stir for half an hour. Cool down to 40°C-45°C and discharge to obtain component A;

[0037] Add 50 parts of liquid petroleum resin, 30 parts of chlorinated paraffin, 0.5 parts of dis...

Embodiment 2

[0040] The preparation method of the thixotropic two-component polyurethane waterproof coating of high temperature construction adopts the following steps:

[0041] Preparation of component A In a 1000mL four-necked flask equipped with a stirrer, condenser, thermometer, and constant pressure dropping funnel, first add 65 parts of polyether diol (2000D) and 10 parts of polyether triol (330N) part and 10 parts of chlorinated paraffin, stirred and heated to 105°C-115°C, vacuum dehydrated for 2-3 hours; cooled the above mixture to 60-70°C, added inhibitor and stirred evenly, then added 5 parts of toluene diisocyanate, 70 After reacting at ℃-80℃ for 1.5 hours, add 25 parts of diphenylmethane diisocyanate and react at 70℃-80℃ for 1.5 hours; lower the temperature to 50℃-60℃, add 0.1 part of defoamer, and stir for half an hour. Cool down to 40°C-45°C and discharge to obtain component A;

[0042] Add 50 parts of liquid petroleum resin, 30 parts of chlorinated paraffin, 0.5 parts of di...

Embodiment 3

[0045] The preparation method of the thixotropic two-component polyurethane waterproof coating of high temperature construction adopts the following steps:

[0046] Preparation of component A In a 1000mL four-neck flask equipped with a stirrer, condenser, thermometer, and constant pressure dropping funnel, first add 60 parts of polyether diol (2000D) and 15 parts of polyether triol (330N) part and 10 parts of chlorinated paraffin, stirred and heated to 105°C-115°C, vacuum dehydrated for 2-3 hours; cooled the above mixture to 60-70°C, added inhibitor and stirred evenly, then added 5 parts of toluene diisocyanate, 70 After reacting at ℃-80℃ for 1.5 hours, add 30 parts of diphenylmethane diisocyanate and react at 70℃-80℃ for 1.5 hours; lower the temperature to 50℃-60℃, add 0.5 parts of defoamer, and stir for half an hour. Cool down to 40°C-45°C and discharge to obtain component A;

[0047] Add 50 parts of liquid petroleum resin, 30 parts of chlorinated paraffin, 0.5 parts of dis...

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Abstract

The invention relates to thixotropic bi-compound polyurethane waterproof paint capable of being constructed at a high temperature and a preparation method thereof. The thixotropic bi-compound polyurethane waterproof paint is prepared by mixing a component A and a component B at the mass ratio of 1:2.5. The component A is prepared from, by component content, polyether polyol, toluene diisocyanate, diphenylmethane diisocyanate, a plasticizer, a defoaming agent and a polymerization inhibitor. The component B is prepared from extending oil, a plasticizer, pigment and filler, a solvent, a composite chain extender, a defoaming agent, an emulsifying agent, a dispersing agent, a polymerization inhibitor, a coupling agent and a thixotropic agent. Compared with the prior art, the thixotropic bi-compound polyurethane waterproof paint has the advantages of being environmentally friendly, free of peculiar smells, excellent in storage performance and convenient to construct, and being long in operable time, excellent in overall performance, obvious in cost advantage and the like in a high-temperature construction environment in summer.

Description

technical field [0001] The invention relates to a waterproof coating and a preparation method thereof, in particular to a thixotropic two-component polyurethane waterproof coating applied at high temperature and a preparation method thereof. Background technique [0002] Polyurethane waterproof coating belongs to reactive chemical rubber high-elastic waterproof coating film. This material has the advantages of convenient formula adjustment and excellent comprehensive performance, so it has been widely used in the construction field and occupies an important position in the construction waterproof field. According to its composition, polyurethane waterproof coatings can be divided into two categories: one-component and two-component. Among them, two-component is widely used because of its dense coating film, excellent performance, one-time thick coating, simple production and low price. Because the curing speed of two-component polyurethane waterproof coatings is particularly...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12C08G18/76C08G18/66C08G18/48
Inventor 程先政
Owner 上海北新月皇新材料集团有限公司
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