Polyurea waterproof coiled material

A waterproofing membrane, polyurea technology, applied in water conservancy projects, building insulation materials, roofing using flexible materials, etc. Application and other problems, to achieve the effect of simple structure, strong adhesion and stable construction performance

Inactive Publication Date: 2012-01-11
KESHUN WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technical performance of the finished polyurea material, especially the construction performance, is very unstable. The direct reason is that the polyurea waterproof coating is a two-component coating. It will be gelled inside, which makes the coating difficult, the equipment cost of coat

Method used

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  • Polyurea waterproof coiled material
  • Polyurea waterproof coiled material
  • Polyurea waterproof coiled material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The liquid material for preparing the polyurea elastic layer includes component A and component R with a volume ratio of 1:1.

[0023] Wherein, component A includes: 42% (weight) of PPG2000 polyether polyol and 58% (weight) of liquefied diphenylmethane diisocyanate (MDI).

[0024] Preparation process of component A: Dehydrate PPG2000 polyether polyol at 100-105°C and vacuum degree of -0.07--0.10Mpa for 3 hours, then lower the temperature to 78-82°C, add liquefied diphenylmethane Diisocyanate (MDI), stirred, and kept warm for 2 hours; the temperature was lowered to below 70°C, filtered with a 200-mesh filter, and discharged.

[0025] The R component comprises the liquid material of following percentage by weight: polyether diamine (4000 molecular weight) 38%, polyether diamine (2000 molecular weight) 19.5%, polyether triamine (3000 molecular weight) 13%, diethyltoluenediamine (DETDA) 10%, di-tert-butylethylenediamine 16%, titanium dioxide 3%, black paste 0.5%.

[0026]...

Embodiment 2

[0033] The liquid material for preparing the polyurea elastic layer includes component A and component R with a volume ratio of 1:1.

[0034] Wherein, component A includes: 44.2% (weight) of PPG2000 polyether polyol, 50.8% (weight) of liquefied diphenylmethane diisocyanate (MDI) and 5.0% (weight) of toluene diisocyanate (TDI).

[0035] Preparation process of component A: dehydrate PPG2000 polyether polyol at 100-105°C, vacuum degree -0.07-0.10Mpa for 3 hours, then lower the temperature to 78-82°C, add toluene diisocyanate (TDI ), stirred evenly, and reacted for 2 hours; then added diphenylmethane diisocyanate (MDI), stirred, and reacted for 2 hours; then lowered the temperature below 70°C, filtered and discharged with a 200-mesh filter.

[0036] The R component comprises the liquid material of following percentage by weight: PPG2000 polyether polyol 54.8%, polyether diamine (4000 molecular weight) 17.7%, polyether diamine (2000 molecular weight) 8.5%, polyether triamine (3000 ...

Embodiment 3

[0044] The liquid material for preparing the polyurea elastic layer includes component A and component R with a volume ratio of 1:1.

[0045] Wherein, component A includes: 44% (weight) of PPG2000 polyether polyol and 56% (weight) of hydrogenated diphenylmethane diisocyanate (hydrogenated MDI).

[0046] Preparation process of component A: Dehydrate PPG2000 polyether polyol at 100-105°C and vacuum degree of -0.07--0.10Mpa for 3 hours, then lower the temperature to 80-85°C, add hydrogenated diphenylmethane Diisocyanate (hydrogenated MDI), stirred, and kept warm for 3.5 hours; the temperature was lowered to below 60°C, filtered with a 200-mesh filter, and discharged.

[0047] The R component comprises the liquid material of following percentage by weight: polyether diamine (4000 molecular weight) 35%, polyether diamine (2000 molecular weight) 19.5%, polyether triamine (3000 molecular weight) 13%, diethyltoluenediamine (DETDA) 16%, di-tert-butylethylenediamine 13%, titanium dioxide...

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Abstract

The invention discloses a polyurea waterproof coiled material which is of a layered structure with a plurality of layer surfaces. At least one layer of the layered structure is a polyurea elastic layer. The polyurea waterproof coiled material provided by the invention has the excellent advantages of excellent bonding force, excellent combination with a concrete substrate, simple structure, stable construction property, convenience in operation, excellent waterproof property, excellent weather resistance and durability, high strength, difficulty in aging, longer service life, wide application prospects and the like.

Description

technical field [0001] The invention relates to a building waterproof material, in particular to a building waterproof coiled material. Background technique [0002] Waterproofing is an important issue in building civil engineering construction, so it is necessary to choose building waterproof materials with excellent performance and reliability in building construction. Building waterproof materials usually include two categories: waterproof coatings and waterproof membranes. The commonly used waterproof membranes are asphalt felt, asphalt modified materials and various types of synthetic polymer membranes, such as EPDM waterproof membranes and PVC waterproof membrane. Its structure is often based on its respective chemical raw materials, and is made by extrusion or calendering. It has disadvantages such as low strength, easy cracking, weak weather resistance and durability, easy aging, and complicated construction. [0003] Polyurea is a new type of environmentally frien...

Claims

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Application Information

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IPC IPC(8): E04B1/66E04D5/10E02D31/02E21D11/38E02B3/16B32B27/08B32B7/12C08G18/78C08G18/66C08G18/50C08G18/32
Inventor 陈荣勇陈伟忠伍慧权
Owner KESHUN WATERPROOF TECH CO LTD
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