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Polyurethane external-wall heat-insulation material

An external wall insulation and polyurethane technology, which is applied in the field of wall insulation materials, can solve the problems of insufficient foam elongation and breakage of the waterproof layer, and achieve the effects of low cost, simple construction operation and low requirements.

Inactive Publication Date: 2005-12-21
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of rigid polyurethane foam for waterproofing and thermal insulation of building roofs has not been ideal. The waterproof layer often breaks and leaks due to the uneven settlement of the building foundation. The reason is that the elongation of the foam is not enough.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1 is a polyurethane exterior wall thermal insulation material provided by the present invention, and its components are as follows (parts by weight):

[0050] Component A: 90g polyether polyol, 30g PET alcoholysis, 3g silicone oil, 18g fire retardant polyether, 4g triethanolamine, 0.5g organotin, 24g F11;

[0051] Part B: PAPI 170g;

[0052] PET alcoholysis formula: PET waste 100; diethylene glycol 80

[0053] The preparation process of the first component of the present invention is as follows: according to the proportion of the polyether polyol, PET alcoholysis, blowing agent, flame retardant, stabilizer and catalyst in a mixing kettle to start stirring, mixing at room temperature for 20-30 minutes, The first component is obtained by filtration.

[0054] The preparation process of the PET alcoholysis product in the present invention is as follows: firstly, the PET waste is removed from mechanical impurities, crushed, washed and dried, and then the measured diethyl...

Embodiment 2

[0059] Example 2 is a polyurethane exterior wall thermal insulation material provided by the present invention, and its components are as follows (parts by weight):

[0060] Component A: 100g of polyether polyol, 35g of PET alcoholysis, 4g of silicone oil, 20g of flame retardant polyether, 3g of triethanolamine, 0.4g of organotin, 26g of F11.

[0061] Part B: PAPI 240g

[0062] PET alcoholysis formula: PET waste 100; diethylene glycol 90; glycerol 10

[0063] The preparation and construction process are the same as in Example 1, and the main properties of the product are shown in Example 1.

Embodiment 3

[0064] Example 3 is a polyurethane external wall thermal insulation material provided by the present invention, and its components are as follows (parts by weight):

[0065] Component A: 95g of polyether polyol, 33g of PET alcoholysis, 3.5g of silicone oil, 19g of fire retardant polyether, 3.5g of triethanolamine, 0.5g of organotin, 25g of F11.

[0066] Part B: PAPI 200g

[0067] PET alcoholysis formula: PET waste 100; diethylene glycol 90; glycerol 10.

[0068] The preparation and construction process are the same as in Example 1, and the main properties of the product are shown in Example 1.

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Abstract

This is a kind of polyurethane outer wall thermal insulation material belonging to chemical technology field. The invention is double components reaction. The First Component is the mixture of polyether polyols, PET alcoholysis and various auxiliary agents, and the Second Component is polyarylpolymethylene polyphenyl isocyanate (PAPI). When used, mix according to proportion can adopt smearing method to construct. Because of adding PET alcoholysis, it can observably improve the foam porosity structure of product. The obtained product has certain toughness, and the break elongation ratio is improved. It can form compact and hard epidermis when frothing, so it has certain waterproof effect besides thermal insulation. It can be applied for outer wall thermal insulation with both effects of reducing energy waste and waterproofness. The PET alcoholysis is made from PET waste material, so its cost is lower than polyether polyols,. Its addition can reduce the cost of outer wall thermal insulation material. Besides it provides new mentality for the use of PET waste material.

Description

Technical field [0001] The invention relates to a wall thermal insulation material for construction, in particular to a new type polyurethane external wall thermal insulation material integrating waterproof and thermal insulation. It is a supplement to the existing wall thermal insulation materials and belongs to building wall thermal insulation materials And chemical technology. Background technique [0002] Building waterproofing and insulation are two major issues that the construction industry pays attention to. Because building waterproofing engineering and building energy-saving engineering are designed and constructed separately, plus the existing waterproof materials and insulation materials have single performance and complicated construction procedures. , Waterproof is not heat-preserving, and heat-preserving is not waterproof; once the waterproof layer leaks, the heat preservation layer will lose its heat preservation performance. [0003] Aiming at the defects in the ...

Claims

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Application Information

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IPC IPC(8): C08G18/48
CPCY02A30/00Y02B30/90
Inventor 刘运学范兆荣谷亚新
Owner SHENYANG JIANZHU UNIVERSITY
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