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A kind of non-curing polyurethane waterproof coating and preparation method thereof

A polyurethane waterproof, non-curing technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of generating asphalt smoke, complex production process, complex single component, etc., to improve quality, good bonding performance, Good self-healing effect

Active Publication Date: 2019-04-16
XUZHOU WONIUSHAN NEW WATERPROOF MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the existing non-curing waterproof coatings basically contain asphaltene, and the color can only be black; and the viscosity is very high at room temperature, and heating is required during construction, thereby generating asphalt fumes, polluting the environment, harmful to the human body, and not environmentally friendly. complex and potentially dangerous
For example, prior art application (patent) No.: CN201010018113.6 etc. all belong to rubber asphalt non-curing; wherein the non-curing polyurethane waterproof coating disclosed in the prior art CN201410115980.X related to non-curing polyurethane contains a large amount of asphalt, and the production process is complicated , a single color;
The non-curing polyurethane waterproof coating disclosed in prior art application (patent) No. CN201610732902.3 has no asphaltene but is a two-component product, which needs to be mixed evenly before construction, which is more complicated than single-component

Method used

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  • A kind of non-curing polyurethane waterproof coating and preparation method thereof
  • A kind of non-curing polyurethane waterproof coating and preparation method thereof
  • A kind of non-curing polyurethane waterproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Formula of non-curing polyurethane waterproof coating

[0027]

[0028] 2. Preparation of non-curing polyurethane waterproof coating

[0029] Put polyol ether DL-2000D, polyether polyol EP-330N, chlorinated paraffin, dibutyl phthalate, talcum powder, heavy calcium carbonate, and carbon black into the reaction kettle, at 120℃±5℃ , Vacuum degree below -0.095MPa and dehydration for 2h, then lower the temperature to 75°C-80°C, add TDI and ethyl acetate, heat up to 80°C±5°C for 2.5h, then add T-12 and react at 80°C±5°C for 0.5 h, then lower the temperature to 75°C-80°C and add latent curing agent, react at 75°C-80°C for 1 hour, and finally lower the temperature to below 70°C for packaging. .

[0030] Table 1-Example 1 prepared non-cured polyurethane waterproof coating key item test results

[0031]

Embodiment 2

[0033] 1. Formula of non-curing polyurethane waterproof coating

[0034]

[0035]

[0036] 2. Preparation of non-curing polyurethane waterproof coating

[0037] Put polyol ether DL-2000D, polyether polyol EP-330N, chlorinated paraffin, talcum powder, heavy calcium carbonate, kaolin, iron oxide red into the reactor, at 120℃±5℃, vacuum degree -0.095 Dehydration below MPa for 2h, lower the temperature to 75°C-80°C0°C, add TDI and acetone, raise the temperature to 80°C±5°C for 2.5h, then add T-12 and react at 80°C±5°C for 0.5h, then cool down to 75 Add latent curing agent at ℃-80℃, react at 75℃-80℃ for 1h, cool down to 65℃, add PZ-005, keep at 75℃-80℃ for 0.5h, and finally cool down to below 70℃ for discharging and packaging.

[0038] Table 2-Example 2 prepared non-cured polyurethane waterproof coating key item test results

[0039]

Embodiment 3

[0041] 1. Formula of non-curing polyurethane waterproof coating

[0042]

[0043] 2. Preparation of non-curing polyurethane waterproof coating

[0044]Put polyol ether DL-1000D, polyether polyol DL-2000D, polyether polyol EP-330N, dioctyl phthalate, talcum powder, heavy calcium carbonate, light calcium carbonate, and green pulp into the reaction In the still, dehydrate at 120°C±5°C, vacuum degree below -0.095MPa for 2h, cool down to 75°C-800°C, add MDI, heat up to 80°C±5°C for 2.5h, then add T-9 at 80°C± React at 5°C for 0.5h, then cool down to 75°C-80°C and add latent curing agent, react at 75°C-80°C for 1h, and finally cool down to below 70°C for discharge and packaging.

[0045] Table 3-Example 3 prepared non-cured polyurethane waterproof coating key item test results

[0046]

[0047] Take the non-curing one-component polyurethane waterproof coating that embodiment 2 makes as an example to detect, and the results are shown in Table 4:

[0048] Table 4-non-curing p...

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PUM

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Abstract

The invention discloses non-cured single-component polyurethane waterproof paint and a preparation method thereof. The polyurethane waterproof paint is prepared from the following raw materials in parts by weight: 20-30 parts of polyether polyol, 10-20 parts of a plasticizer, 30-60 parts of filler, 0-1 part of a solvent, 0.1-1 part of pigment, 3-7 parts of isocyanate, 0.05-0.5 part of a catalyst and 2-5 parts of a latent curing agent, wherein the molar ratio of NCO to OH in the formula is 1.8-2.5, the content of residual NCO is 0.6-1.5%, and the added amount of the latent curing agent is (1.2-2.0)*mole number of the residue NCO*active hydrogen equivalent in the latent curing agent. The product is kept in a paste state after construction, has excellent durability, fatigue durability, high and low temperature resistance and extensibility, good self-healing property, good adhesive property and good flexibility, is nontoxic, tasteless, pollution-free and non-flammable at a room temperature, and can be stored in a sealed state for a long period of time, and the operation performance is not affected.

Description

technical field [0001] The invention relates to a polyurethane waterproof coating and a preparation method thereof, in particular to a non-curing polyurethane waterproof coating and a preparation method thereof. Background technique [0002] One-component polyurethane waterproof coating is a new type of high-grade waterproof and anti-corrosion material. This kind of material is non-toxic and easy to construct. It is mainly used for waterproofing and anti-seepage of buildings, especially high-rise buildings and anti-corrosion of chemical plant floors and pipelines. It can even be used to make artificial turf and elastic ground: it can also be used in wet places. The cement-based surface construction is firmly combined with the cement to form a seamless coating. But once the base layer is cracked and the waterproof layer is subjected to tensile stress, since the polyurethane coating is firmly bonded to the base layer, it will produce cracks along with the cracking of the base...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D7/61C09D7/63C09D7/65C08G18/66C08G18/48C08G18/10
CPCC08G18/10C08G18/4804C09D7/61C09D7/63C09D7/65C09D175/08C08L91/06C08K13/02C08K5/12C08K3/34C08K2003/265C08K3/04C08G18/3296C08G18/3225
Inventor 李海章刘金景段鹏飞李善法
Owner XUZHOU WONIUSHAN NEW WATERPROOF MATERIALS
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