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Polyurethane waterproof coating material

A polyurethane waterproof and coating technology, which is applied in the field of architectural waterproof coatings, can solve the problem that the right-angle tear strength of high-strength polyurethane waterproof coatings cannot meet the national standards, and achieve high bonding strength, high brightness and low cost.

Active Publication Date: 2019-04-02
TANGSHAN DONGFANG YUHONG WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the Railway Building Research Institute of the China Academy of Railway Sciences replaced a new style of right-angle cutter, resulting in the right-angle tear strength of the high-strength polyurethane waterproof coating for railways produced with the existing formula cannot meet the national standard, and a new formula system must be adopted

Method used

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  • Polyurethane waterproof coating material
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  • Polyurethane waterproof coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] This embodiment provides a polyurethane waterproof coating.

[0057] A component raw material ratio:

[0058]

[0059] B component raw material ratio:

[0060]

[0061]

[0062] A component preparation process:

[0063] a. Add 30.50 parts by weight of polyether diol 2000D, 20.57 parts by weight of polyether diol with a molecular weight of 200-1000, and 28.55 parts by weight of diisononyl phthalate in a four-necked flask, stir and heat up to 100 ℃-120℃, dehydration under the condition of -0.1MPa~-0.05MPa vacuum degree for 2~3 hours;

[0064] b. Lower the temperature to 50-70°C, add 26.57 parts by weight of isocyanate under high-speed stirring, react for 1-2 hours, then heat to 70-100°C and react for 3 to 4 hours while stirring;

[0065] c. Lower the temperature to 50-60°C, add 0.03 parts by weight of silane coupling agent under high-speed stirring conditions;

[0066] d. Cool down to 40°C-50°C, and discharge the material after 30 minutes of degassing under the condition of vacuum d...

Embodiment 2

[0072] This embodiment provides a polyurethane waterproof coating.

[0073] A component raw material ratio:

[0074]

[0075] B component raw material ratio:

[0076]

[0077] A component preparation process:

[0078] a. Add 15.60 parts by weight of polyether glycol 2000D, 45.80 parts by weight of polyether glycol with a molecular weight of 200-1000, and 8.60 parts by weight of chlorinated paraffin in a four-necked flask, stir and heat up to 100°C-120°C, Dehydrate for 2 to 3 hours under the condition of vacuum degree of -0.1MPa~-0.05MPa;

[0079] b. Lower the temperature to 50-70°C, add 29.90 parts by weight of isocyanate under high-speed stirring, react for 1-2 hours, then heat to 70-100°C under stirring, and react for 3 to 4 hours;

[0080] c. Lower the temperature to 50-60°C, and add 0.10 parts by weight of silane coupling agent under high-speed stirring conditions;

[0081] d. Cool down to 40°C-50°C, and discharge the material after 30 minutes of degassing under the condition of vacu...

Embodiment 3

[0087] This embodiment provides a polyurethane waterproof coating.

[0088] A component raw material ratio:

[0089]

[0090]

[0091] B component raw material ratio:

[0092]

[0093] A component preparation process:

[0094] a. Add 20.08 parts by weight of polyether glycol 2000D, 24.50 parts by weight of polyether glycol with a molecular weight of 200-1000, and 28.80 parts by weight of chlorinated paraffin in a four-necked flask, stir and heat up to 100℃-120℃, Dehydrate for 2 to 3 hours under the condition of vacuum degree of -0.1MPa~-0.05MPa;

[0095] b. Lower the temperature to 50-70°C, add 30.85 parts by weight of isocyanate under high-speed stirring, react for 1-2 hours, then heat to 70-100°C and react for 3 to 4 hours while stirring;

[0096] c. Lower the temperature to 50-60°C, and add 0.05 parts by weight of silane coupling agent under high-speed stirring conditions;

[0097] d. Cool down to 40°C-50°C, and discharge the material after 30 minutes of degassing under the condition ...

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Abstract

The invention discloses a polyurethane waterproof coating material, which comprises a component A and a component B, wherein the component A comprises: isocyanate, hydroxyl-terminated polyether diol having a molecular weight of 2000-5000, hydroxyl-terminated polyether diol having a molecular weight of 200-1000, a plasticizer and a silane coupling agent, and the component B comprises: hydroxyl-terminated polyether polyol, a plasticizer, an organic solvent, a pigment filler, a catalyst, a curing agent, a high performance auxiliary agent and an acidic aid. According to the present invention, thepolyurethane waterproof material has advantages of high tensile strength, high elongation at break, high right angle tear strength, high bond strength, moisture heat resistance, aging resistance, chemical corrosion resistance, low cost, dense film sheet, high brightness, reliable construction and the like, has all the performances higher than the standards of TB / T 2965-2011 Technical specificationfor waterproof layer of railway concrete bridge, and is especially suitable for railway bridges.

Description

Technical field [0001] The invention belongs to the field of building waterproof coatings, and more specifically, relates to a polyurethane waterproof coating. Background technique [0002] Polyurethane waterproof coating is a waterproof material for on-site construction using polyurethane resin as the main material. Developed to overcome the shortcomings of traditional asphalt waterproof coatings and waterproof membranes. It is a chemically reactive waterproof coating. After curing, it is a rubber-like high-elastic coating film. The coating film is seamless as a whole. It has strong adaptability to the deformation and deformation of the base cracks and is convenient for construction and maintenance. Polyurethane waterproof coating is an amorphous viscous liquid substance before curing. It can be applied to any complex base surface layer. Because of its excellent comprehensive performance, it is called "liquid coil" by the industry and is widely used worldwide. After more than ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C08G18/48
CPCC08G18/4812C09D175/08
Inventor 张征太韩海军刘操段鹏飞孙建李海章刘艳丰周银
Owner TANGSHAN DONGFANG YUHONG WATERPROOF TECH CO LTD
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