Full-water-type combined polyether and application method thereof, and polyurethane rigid foam composition

A combination of polyether and water-based technology, which is applied in the field of polyurethane rigid foam foaming, can solve the problems of decreased strength and cohesiveness of polyurethane foam, high ratio of combined polyether and isocyanate, loss of strength and cohesiveness, etc. problem, to achieve the effect of good adhesion, good bonding performance, and good thermal conductivity

Inactive Publication Date: 2011-06-01
SHANGHAI DONGDA POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects in the above-mentioned prior art that when water is used as a foaming agent, the foam strength and cohesiveness of polyurethane foam are reduced, and the proportion of polyether and isocyanate is high, resulting in increased costs. Provided is an a

Method used

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  • Full-water-type combined polyether and application method thereof, and polyurethane rigid foam composition
  • Full-water-type combined polyether and application method thereof, and polyurethane rigid foam composition
  • Full-water-type combined polyether and application method thereof, and polyurethane rigid foam composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The formula of all water type combined polyether:

[0033] 6 parts of polyether polyol SA380, 4 parts of polyether polyol 310, 0.2 parts of silicone foam stabilizer B8462, 0.2 parts of N, N-dimethylcyclohexylamine, 0.1 parts of N, N-dimethylbenzylamine part, 0.4 part of water.

[0034] The preparation method of the all-water type composite polyether: according to the formula of the all-water type composite polyether, stir the above-mentioned components at room temperature at 500 rpm for 2 hours, and then discharge the materials.

[0035] Preparation of polyurethane foam insulation material: the mass ratio of polyether product and isocyanate is 1:1.2, and the foam density is 35kg / m. 3 Polyurethane foam insulation for solar energy.

Embodiment 2

[0037] All water type combined polyether formula:

[0038] 5 parts of polyether polyol SA380, 5 parts of polyether polyol 310, 0.25 parts of silicone foam stabilizer B8462, 0.25 parts of N,N-dimethylcyclohexylamine, 0.2 parts of N,N-dimethylbenzylamine part, 0.3 part of water.

[0039] The preparation method of the all-water type composite polyether: according to the formula of the all-water type composite polyether, stir the above-mentioned components at room temperature at 500 rpm for 2 hours, and then discharge the materials.

[0040] Preparation of polyurethane foam insulation material: the mass ratio of polyether product and isocyanate is 1:1.0, and the foam density is 38kg / m. 3 Polyurethane foam insulation for solar energy.

Embodiment 3

[0042] The formula of all water type combined polyether:

[0043] 7 parts of polyether polyol SA380, 3 parts of polyether polyol 310, 0.3 parts of silicone foam stabilizer L69000, 0.3 parts of N,N-dimethylcyclohexylamine, 0.2 parts of N,N-dimethylbenzylamine parts, 0.45 parts of water,

[0044] The preparation method of the all-water type composite polyether: according to the formula of the all-water type composite polyether, stir the above-mentioned components at room temperature at 500 rpm for 2 hours, and then discharge the materials.

[0045] Preparation of polyurethane foam insulation material: the mass ratio of polyether product and isocyanate is 1:1.2, and the foam density is 37kg / m3 Polyurethane foam insulation for solar energy.

[0046] Effect Example 1 Application of all-water type combination polyether for solar energy

[0047] Add the combined polyether of Example 1 into the POL material liquid storage tank of the foaming machine, and add the polyisocyanate into ...

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Abstract

The invention discloses a full-water-type combined polyether and an application method thereof. The full-water-type combined polyether comprises polyether polyol SA380, polyether polyol 310, a foam stabilizer, N,N-dimethylcyclohexylamine, N,N-dimethylbenzylamine and water. The invention also discloses a composition for preparing polyurethane rigid foam. The full-water-type combined polyether disclosed by the invention overcomes the defect that Freon foaming agents used in the existing combined polyether can produce irreversible pollution in the environment, and the defects of foam deformation, higher brittleness and the like when water is used as the foaming agent. The invention provides a full-water-type combined polyether which uses water as the foaming agent; and the prepared combined polyether has the advantages of favorable thermal conductivity, excellent dimensional stability, excellent flowability, excellent demoldability and high compression strength, is especially suitable to be used as a heat insulating material in the field of solar water heaters, and has obvious environmental-protection advantage and social benefit.

Description

technical field [0001] The invention relates to the field of rigid polyurethane foam foaming, in particular to an all-water type combined polyether and a use method thereof. The present invention also relates to a rigid polyurethane foam composition containing the all-water type combined polyether. Background technique [0002] Polyurethane rigid foam is widely used in thermal insulation, refrigeration, construction and other industries due to its excellent performance, but with the wide expansion of its application, its negative impact on the environment has sounded the alarm for people. The blowing agents used in the polyurethane foam industry mainly include: HCFC (hydrochlorofluorocarbon), HFC (hydrofluorocarbon), HC (alkane), liquid CO 2 or water. HCFC, HFC and other blowing agents are Freon-type (CFCs) blowing agents. The use of Freon will damage the ozone layer of the atmosphere, resulting in enhanced ultraviolet radiation and threatening the survival of humans and o...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08G18/18C08G101/00
Inventor 李心强董建国周玉波
Owner SHANGHAI DONGDA POLYURETHANE
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