Double-component chemical-reaction thixotropic polyurethane waterproof paint and preparation method thereof

A polyurethane waterproof and chemical reaction technology, applied in the field of architectural waterproof coatings, can solve the problems of relatively strict raw material restrictions and narrow application range, achieve good thixotropy, and solve the effect of serious flow in facade construction

Active Publication Date: 2015-04-29
XUZHOU WONIUSHAN NEW WATERPROOF MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN201310315369.7 discloses a two-component water-based polyurethane adhesive. A silane coupling agent is added to the traditional formula system to enhance its cohesive force and maintain low viscosity. It can be used for caulking and other purposes, and the restrictions on raw materials are relatively strict

Method used

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  • Double-component chemical-reaction thixotropic polyurethane waterproof paint and preparation method thereof
  • Double-component chemical-reaction thixotropic polyurethane waterproof paint and preparation method thereof
  • Double-component chemical-reaction thixotropic polyurethane waterproof paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Raw material ratio:

[0031] A component:

[0032]

[0033] B component:

[0034]

[0035]

[0036] crafting process:

[0037] A component:

[0038] a. Add 20-50 parts by weight of polyether polyol into the reaction vessel, stir and heat up to 100°C-130°C, and dehydrate for 2-3 hours under the condition of vacuum of -0.01MPa;

[0039] b. Lower the temperature below 60°C-80°C, add 20-40 parts by weight of isocyanate, and react for 2-3 hours under stirring at 60-100°C;

[0040] c. Lower the temperature to below 50°C-60°C, add 5-15 parts by weight of plasticizer and 0-1 part by weight of high-performance additives, lower the temperature to below 30°C-40°C and fill with nitrogen for protection, and discharge to obtain Group A point.

[0041] B component:

[0042]a. Add 20-40 parts by weight of polyether polyols, 5-30 parts by weight of chain extenders, 5-20 parts by weight of plasticizers, and pigments and fillers of 20-40 parts by weight in the reaction vess...

Embodiment 2

[0046] Raw material ratio:

[0047] A component:

[0048]

[0049] B component:

[0050]

[0051] crafting process:

[0052] Same as Example 1.

[0053] During construction, components A and B are mixed evenly at a weight ratio of 1:2.

Embodiment 3

[0055] Raw material ratio:

[0056] A component:

[0057]

[0058] B component:

[0059]

[0060]

[0061] crafting process:

[0062] Same as Example 1.

[0063] During construction, components A and B are mixed evenly at a weight ratio of 1:1.

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Abstract

The invention discloses a double-component chemical-reaction thixotropic polyurethane waterproof paint which is composed of a component A and a component B. The component A comprises the following ingredients in parts by weight: 20-40 parts of isocyanate, 20-50 parts of polyether glycol, 5-15 parts of plasticizer and 0-1 part of high-performance assistant. The component B comprises the following ingredients in parts by weight: 20-40 parts of polyether glycol, 5-30 parts of chain extender, 5-20 parts of plasticizer, 0.1-1 part of polymerization inhibitor, 0.1-1 part of amine reactant, 0.2-1 part of catalyst, 20-40 parts of pigment and filler, 5-20 parts of solvent and 0.1-1 part of high-performance assistant. Since the component B contains the special-type amine reactant capable of reacting with isocyanate, the polyurea compound can be quickly generated after the two components are mixed under the action of the specific polymerization inhibitor; and the compound can form abundant hydrogen bonds with the polyurethane prepolymer, so that the double-component chemical-reaction thixotropic polyurethane waterproof paint has favorable thixotropy and constructability.

Description

technical field [0001] The invention relates to a building waterproof coating, in particular to a two-component chemical reaction thixotropic polyurethane waterproof coating and a preparation method thereof. Background technique [0002] Polyurethane waterproof coating belongs to chemical reaction type waterproof coating. After curing, it becomes a rubber-like high-elastic coating film. With its excellent comprehensive performance, this material is the most successful coating film waterproof material used so far. It is widely used in building waterproofing applications. occupy an important position in. According to its composition and curing mechanism, polyurethane waterproof coatings are divided into two categories: one-component and two-component. application. However, due to the good leveling of liquid polyurethane, the flow of the facade construction is particularly serious, and the problem that the thickness of the facade construction cannot be increased at one time h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D175/02C09D7/12C08G18/66C08G18/48C08G18/50C08G18/60C08G18/54C08G18/32
CPCC08G18/12C08G18/3228C08G18/4812C08G18/5024C08G18/603C08L2205/02C08L2205/03C09D7/61C09D7/63C09D7/65C09D175/08C08L75/02C08L91/06C08G18/6685C08G18/6674C08L91/00
Inventor 李红英孙健段鹏飞
Owner XUZHOU WONIUSHAN NEW WATERPROOF MATERIALS
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