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Preparation method of polyurethane waterproofing paint comprising polytetrahydrofuran and copolyether thereof

A technology of polytetrahydrofuran and water-based polyurethane, which is applied in the field of coatings, can solve the problems of inability to balance waterproof performance and wear resistance, and achieve excellent wear resistance and good water resistance.

Inactive Publication Date: 2015-04-01
TAIXING HEQING MACHINERY FITTINGS FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the inability to balance waterproof performance and wear resistance in the prior art, the present invention provides a polytetrahydrofuran and its copolyether water-based polyurethane waterproof coating with excellent wear resistance and good water resistance and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A polytetrahydrofuran and its copolyether waterborne polyurethane waterproof coating, the mass components of which are: 100 parts of polytetrahydrofuran and its copolyether polyol, 15 parts of ethoxyethyl acetate, 7 parts of carbonamide, and 4 parts of potassium tripolyphosphate , 3 parts of light calcium carbonate, 3 parts of zinc acetate, 1 part of calcium chloride, 150 parts of deionized water, 6 parts of defoamer, 1 part of silane coupling agent.

[0011] The preparation method includes the following steps: reacting polytetrahydrofuran and its copolyether polyol, ethoxyethyl acetate under low-speed stirring for 0.5h; then adding carbonamide, potassium tripolyphosphate, light calcium carbonate, zinc acetate, and chlorine After stirring the calcium hydroxide for 20 minutes, add deionized water; while stirring, add defoamer and silane coupling agent and stir evenly.

Embodiment 2

[0013] A polytetrahydrofuran and its copolyether waterborne polyurethane waterproof coating, the mass components of which are: 100 parts of polytetrahydrofuran and its copolyether polyol, 25 parts of ethoxyethyl acetate, 10 parts of carbonamide, and 6 parts of potassium tripolyphosphate , 5 parts of light calcium carbonate, 5 parts of zinc acetate, 2 parts of calcium chloride, 200 parts of deionized water, 8 parts of defoamer, 10 parts of silane coupling agent.

[0014] The preparation method includes the following steps: reacting polytetrahydrofuran and its copolyether polyol, ethoxyethyl acetate under low-speed stirring for 1h; then adding carbonamide, potassium tripolyphosphate, light calcium carbonate, zinc acetate, and chlorination After the calcium is stirred for 20 minutes, add deionized water; while stirring, add defoamer and silane coupling agent and stir evenly.

Embodiment 3

[0016] A polytetrahydrofuran and its copolyether water-based polyurethane waterproof coating, the mass components of which are: 100 parts of polytetrahydrofuran and its copolyether polyol, 22 parts of ethoxyethyl acetate, 8 parts of carbonamide, and 5 parts of potassium tripolyphosphate , 4 parts of light calcium carbonate, 4 parts of zinc acetate, 1.6 parts of calcium chloride, 180 parts of deionized water, 7 parts of defoamer, 8 parts of silane coupling agent.

[0017] The preparation method includes the following steps: reacting polytetrahydrofuran and its copolyether polyol, ethoxyethyl acetate under low-speed stirring for 1h; then adding carbonamide, potassium tripolyphosphate, light calcium carbonate, zinc acetate, and chlorination After the calcium is stirred for 20 minutes, add deionized water; while stirring, add defoamer and silane coupling agent and stir evenly.

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PUM

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Abstract

The invention relates to a preparation method of a polyurethane waterproofing paint comprising polytetrahydrofuran and copolyether thereof. The polyurethane waterproofing paint comprises the following components in parts by mass: 100 parts of polytetrahydrofuran and copolyether polyalcohol thereof, 15-25 parts of ethoxyethyl acetate, 7-10 parts of carbamide, 4-6 parts of potassium tripolyphosphate, 3-5 parts of light calcium carbonate, 3-5 parts of zinc acetate, 1-2 parts of calcium chloride, 150-200 parts of deionized water, 6-8 parts of defoamer and 1-10 parts of silane coupling agent. The method comprises the following steps: stirring polytetrahydrofuran and copolyether polyalcohol thereof and ethoxyethyl acetate at a low speed to react for 0.5-1h; sequentially adding carbamide, potassium tripolyphosphate, light calcium carbonate, zinc acetate and calcium chloride, stirring for 20min and then adding deionized water; and adding the defoamer and the silane coupling agent under a stirring state, and uniformly stirring.

Description

Technical field [0001] The invention relates to a coating, in particular to a preparation method of polytetrahydrofuran and its copolyether water-based polyurethane waterproof coating. Background technique [0002] The water-based polyurethane waterproof coating is a green, environmentally friendly, non-toxic and harmless water-based water-based waterproof coating based on polymer emulsion and various copolymers and adding additives. It highlights low temperature flexibility, water impermeability and tensile strength, and is currently an ideal waterproof coating for building waterproofing projects. The waterproof performance and abrasion resistance of the existing common polyurethane resin cannot be balanced. Summary of the invention [0003] Aiming at the disadvantage that the waterproof performance and the abrasion resistance in the prior art cannot be taken into account, the present invention provides a polytetrahydrofuran and its copolyether waterborn...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12
CPCC09D175/08C08G18/4854C08K3/16C08K3/26C08K3/32C08K5/098C08K13/02C08K2003/162C08K2003/265C08K2003/324C09D7/61C09D7/63
Inventor 张和庆
Owner TAIXING HEQING MACHINERY FITTINGS FACTORY
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