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Modified polyurethane hard bubble and its uses

A polyurethane rigid foam and modification technology, applied in the field of polyurethane, can solve the problems of affecting the thermal insulation effect and service life, affecting the thermal insulation effect of the thermal insulation layer, partial or overall shedding, etc., to shorten the construction process, reduce the density, and improve the bonding strength Effect

Inactive Publication Date: 2008-09-24
秦宇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as: polyurethane rigid foam sprayed on the outer wall is not firmly bonded to the wall, and will cause partial or overall peeling off after a period of time
Affect insulation effect and service life
In addition, improper material selection will cause cracks or large-area cracks in the foam insulation layer, which will seriously affect the insulation effect of the insulation layer.
The bonding strength between the base layer and polyurethane is due to the fact that polyurethane itself cannot achieve the desired effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Preparation of modifier

[0045] In 900Kg dimethylformamide, add 300Kg polyhexamethylene adipate polyester, 600Kg toluene diisocyanate, 200Kg iron acetyl acrylate cuprate, stir well; add catalytic amount of dimethylamine, under nitrogen protection, in React at 130°C for 4 hours; add 50Kg trimethylolpropane, cool to 100°C and react for 5 hours; dehydrate under reduced pressure until the solid content of the solution is 40%; add ethyl acetate, dilute the reaction solution to a solid content of 20%, and obtain the modified sex agent.

[0046] The weight of polyhexamethylene adipate polyester is 820.

[0047] (2) Component B adopts toluene diisocyanate;

[0048]Component A is made by mixing the following components by weight: glycerol propylene oxide polyether polyol 300Kg, ethylenediamine propylene oxide polyether polyol 100Kg, rosin propylene oxide polyester polyol 100Kg, modifier 50Kg, Crosslinking agent 50Kg, silicone stabilizer 30Kg, main catalyst 40Kg, auxiliar...

Embodiment 2

[0057] (1) Preparation of modifier

[0058] In 1000Kg dimethylformamide, add 400Kg polyhexamethylene adipate polyester, 650Kg toluene diisocyanate, 230Kg iron acetylacuprate, stir well; add catalytic amount of dimethylamine, under nitrogen protection, in React at 140°C for 3.5h; add 80Kg trimethylolpropane, cool to 105°C and react for 4h; dehydrate under reduced pressure until the solid content of the solution is 45%; add ethyl acetate, dilute the reaction solution to a solid content of 25%, and obtain Modifier.

[0059] The weight of polyhexamethylene adipate polyester is 1000.

[0060] (2) Component B adopts diphenylmethane diisocyanate;

[0061] Component A is made by mixing the following components by weight: glycerol propylene oxide polyether polyol 400Kg, ethylenediamine propylene oxide polyether polyol 200Kg, rosin propylene oxide polyester polyol 200Kg, modifier 70Kg, Crosslinking agent 70Kg, silicone stabilizer 40Kg, main catalyst 50Kg, auxiliary catalyst 30Kg, fla...

Embodiment 3

[0066] (1) Preparation of modifier

[0067] In 1100Kg dimethylformamide, add 450Kg polyhexamethylene adipate polyester, 700Kg toluene diisocyanate, 250Kg iron acetylacuprate, stir well; add catalytic amount of dimethylamine, under nitrogen protection, in React at 150°C for 3.5 hours; add 100Kg trimethylolpropane, cool to 105°C and react for 3.5 hours; dehydrate under reduced pressure until the solid content of the solution is 40%; add ethyl acetate, dilute the reaction solution to a solid content of 30%, and prepare Get modifiers.

[0068] The weight of polyhexamethylene adipate polyester is 1100.

[0069] (2) Component B adopts p-xylylene diisocyanate;

[0070] Component A is made by mixing the following components by weight: glycerol propylene oxide polyether polyol 550Kg, ethylenediamine propylene oxide polyether polyol 300Kg, rosin propylene oxide polyester polyol 300Kg, modifier 150Kg, Crosslinking agent 100Kg, silicone stabilizer 50Kg, main catalyst 70Kg, auxiliary ca...

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PUM

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Abstract

The invention relates to a modified polyurethane hard bubble and the application in water resistance, heat preservation of exterior wall, containing component (A) and component (B), the characteristic is that the component (A) is polyhydroxy compound combined material which is made by adding modifier and other multifarious auxiliary agent in polyether or polyester polyol, the modifier is made by polyhexamethylene adipate and tolylenediisocyanate; The component (B) is isocyanate. The modified polyurethane hard bubble of this invention is applied to heat preservation of exterior wall, having the advantage of low density, high specific tenacity, small thermal conductivity factor, simple and convenient construction work. It is a perfect heat-insulating material of exterior wall.

Description

technical field [0001] The invention belongs to the technical field of polyurethane, and in particular relates to a modified polyurethane hard foam and the application of the material in waterproofing and heat preservation of external walls. Background technique [0002] Rigid polyurethane foam (Hard Polyurethane Foamed Plastics, PU), referred to as hard polyurethane foam, is an ideal material for thermal insulation and energy saving of roofs, ceilings, wall panels, floors and other parts of buildings, especially when thermal insulation performance requirements The superiority of polyurethane is particularly obvious when the thermal insulation layer is required to be thin in order to increase the usable area of ​​the building, and the processing, construction and maintenance requirements are convenient. Now rigid polyurethane foam is widely used in the field of building energy saving. In some countries, the consumption of rigid polyurethane foam in construction ranks first ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/42C08G18/76C08G18/08C09D175/06
Inventor 宋磊张少伟秦宇
Owner 秦宇