Chemical anti-sagging exposed single-component polyurethane waterproof coating and preparation method thereof

A polyurethane waterproof and anti-sagging technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as flow, delay in construction period, waste of manpower and material resources, etc., and achieve dense coating, high strength, and increased storage time Effect

Active Publication Date: 2022-04-26
TANGSHAN DONGFANG YUHONG WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, exposed polyurethane waterproof coatings are often used on high-rise buildings, reservoirs, dams, etc. Component polyurethane waterproof coatings have good leveling properties, and when a single coating film is 0.3-0.5 mm thick on the facade or slope, it will cause serious flow phenomenon, and the single coating film thickness below 0.3 mm needs to be brushed for 5 ~7 times to reach a thickness of 1.5 mm, which not only wastes manpower and material resources, but also delays the construction period

Method used

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  • Chemical anti-sagging exposed single-component polyurethane waterproof coating and preparation method thereof
  • Chemical anti-sagging exposed single-component polyurethane waterproof coating and preparation method thereof
  • Chemical anti-sagging exposed single-component polyurethane waterproof coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Example 1 A chemical anti-sagging exposed type one-component polyurethane waterproof coating and its preparation method

[0061] The components and dosage (unit: parts by weight) of the chemical anti-sagging exposed type one-component polyurethane waterproof coating are shown in the following table.

[0062] Polyether diol 2000D 6 Polyether Triol 330N 24 Chlorinated paraffin 10 Chloromethyl hexadecanoate 2 carbon black 0.3 talcum powder 18 Heavy calcium 800 mesh 20 Antioxidant 1010 0.3 Light stabilizer tinuvin626 0.3 UV absorber tinuvin770 0.3 Phosphoric acid aqueous solution (85% mass fraction) 0.1 Calcium Oxide 2 Water remover TI 1 HMDI 6 Zinc isooctanoate 0.5 D80 alkane oil 8 4,4'-Diaminodiphenylmethane 0.3 Butyl acetate 0.9

[0063] Its preparation method is:

[0064] a. Add formula amount of polyether diol 2000D, polyether triol 330N, chlorinated para...

Embodiment 2

[0073] Example 2 A chemical anti-sagging exposed type one-component polyurethane waterproof coating and its preparation method

[0074] The components and dosage (unit: parts by weight) of the chemical anti-sagging exposed type one-component polyurethane waterproof coating are shown in the following table.

[0075] Polyether diol 2000D 6.4 Polyether Triol 330N 27.6 Tri-n-butyl citrate 3 Chloromethyl hexadecanoate 10 carbon black 0.3 Kaolin 800 mesh 15 Heavy calcium 800 mesh 18 Antioxidant T501 0.4 Light stabilizer tinuvin765 0.5 UV absorber tinuvin327 0.5 Phosphoric acid aqueous solution (85% mass fraction) 0.1 Calcium Oxide 2 Water remover TI 1 HMDI 6.8 bismuth organic acid 0.6 D80 alkane oil 6 4,4'-Diaminodiphenylmethane 0.34 Propylene glycol methyl ether acetate 1.46

[0076] Its preparation method is:

[0077] a. Add formula amount of polyether diol 2000D, po...

Embodiment 3

[0086] Example 3 A chemical anti-sagging exposed type one-component polyurethane waterproof coating and its preparation method

[0087] The components and dosage (unit: parts by weight) of the chemical anti-sagging exposed type one-component polyurethane waterproof coating are shown in the following table.

[0088]

[0089]

[0090] Its preparation method is:

[0091] a. Add the formula amount of polyether diol 2000D, polyether triol 330N, and chloromethyl hexadecanoate to the reaction vessel and raise the temperature to 80°C, add the formula amount of titanium dioxide, heavy calcium 800 mesh, and antioxidant 1010 , Light stabilizer tinuvin626, UV absorber tinuvin770, heat up to 100°C-120°C, dehydrate with nitrogen for 4 hours under the condition of vacuum below -0.095MPa;

[0092] B. add the nitric acid aqueous solution of formula quantity;

[0093] c. Lower the temperature to 70°C, add the prescribed amount of magnesium oxide under high-speed stirring, and remove wat...

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Abstract

The invention discloses a chemical anti-sagging exposed type single-component polyurethane waterproof coating and a preparation method of the chemical anti-sagging exposed type single-component polyurethane waterproof coating. The high-temperature-resistant polyurethane adhesive is prepared from components in parts by weight as follows: 20-40 parts of polyether, 5-20 parts of a plasticizer, 30-50 parts of pigment filler, 0.3-2 parts of a weather-resistant aid, 0.1-0.5 parts of a pH value regulator, 1-5 parts of a drying agent, 1-5 parts of a water removal agent, 5-10 parts of isocyanate, 0.2-2 parts of a catalyst, 5-10 parts of alkane oil, 0.2-1 part of a chain extension cross-linking agent and 0.6-3 parts of a dissolving agent. The single-component polyurethane waterproof coating has the advantages of high strength, compact coating film, no sagging after being brushed for 24 hours at the thickness of 2mm in one-time facade construction, labor-saving in construction and blade coating, excellent physical properties and weather resistance, can be applied to exposed construction, and expands the application range of the polyurethane waterproof coating in the field of building waterproofing.

Description

technical field [0001] The invention belongs to the technical field of waterproof coatings, in particular to a chemical anti-sagging exposed type single-component polyurethane waterproof coating and a preparation method thereof. Background technique [0002] Polyurethane waterproof coating is a chemical reaction type waterproof coating. After curing, it is a rubber-like high-elastic coating film. The coating film is seamless as a whole. Because of its excellent comprehensive performance, it is called "liquid coil" by the industry. widely used within. [0003] After more than 20 years of development, my country's polyurethane waterproof coatings have a wide range of products and excellent performance, occupying an important position in the construction waterproof industry. However, most of the polyurethane products on the market are aromatic polyurethanes, that is, the isocyanate monomers used are aromatic isocyanates. Aromatic polyurethane has poor weather resistance, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C08G18/66C08G18/48C08G18/12C08G18/32C08G18/08
CPCC09D175/08C08G18/6685C08G18/4812C08G18/4825C08G18/4829C08G18/12C08G18/0885C08G18/089C08G18/3243
Inventor 段鹏飞韩海军常伟陆殿富
Owner TANGSHAN DONGFANG YUHONG WATERPROOF TECH CO LTD
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