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Organic fireproof foaming composition for solar water heater water tank

A technology for a solar water heater and a foaming composition, applied in the field of polyurethane rigid foam organic fireproof insulation materials, can solve the problems of no flame retardancy, uneven mixing, foam cracking, etc., achieve stable thermal insulation performance, avoid water tank deformation, increase opening The effect of porosity

Active Publication Date: 2015-11-18
SHANDONG HEZE TONGYANG AMPEREX TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The foaming method of multiple pouring takes a long time to be completely filled due to the many process steps, which increases the proportion of this "bad foam"
Furthermore, the foam at the junction formed by two adjacent pours, due to the difference in shrinkage, may easily cause the foam to crack when it is cold
[0008]3. Due to other reasons such as low technical level of production operators, poor production facilities, non-standard production process, etc., resulting in unscientific ratio of raw materials or uneven mixing, etc. Operation, seriously affect the performance of polyurethane rigid foam
[0009] Therefore, many polyurethane rigid foam manufacturers adopt methods such as increasing the thickness of the polyurethane rigid foam insulation layer or increasing the density of the filling foam, but thickening the polyurethane rigid foam layer increases the The external volume of the water tank and the amount of materials are expensive, and increasing the density of the foam filling will increase the product weight and thermal conductivity, which does more harm than good, and is not an ideal solution
[0010] In addition, at present, polyurethane rigid foam still has the disadvantage of no flame retardancy. Since some solar water heaters are equipped with electric heaters, if the circuit is aging, it will cause a short circuit and cause a fire. Polyurethane rigid foam is a substance that is easy to burn, so the polyurethane The hard foam is made of flame retardant to avoid the phenomenon of easy burning

Method used

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  • Organic fireproof foaming composition for solar water heater water tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Weigh 5 parts of glycerol polyether resin, 5 parts of glycol ether resin, 0.2 part of foam stabilizer water-soluble silicone oil, 0.2 part of catalyst N, N-dimethylcyclohexylamine, 0.3 part of curing agent dilaurel Acetate dibutyltin, 0.2 part of water, after mixing, form raw material all-water type combination polyether, then add 3 kilograms of dimethyl ethers, 4 kilograms of chitosan of 500,000-800,000 molecular weight according to 80 kilograms of all-water type combination polyethers (with 3% acetic acid solution) and 7 kg of center hole expanded perlite, add brominated flame retardant pentabromotoluene, mix uniformly to form a polyether composition, and then mix with isocyanate at a mass ratio of 1:1.4 and pour into the cavity of the solar water heater tank The organic fireproof foam insulation layer of the solar water heater water tank of the present invention can be obtained after high temperature curing.

Embodiment 2

[0041] Take the polyether produced by Huizhou Foam King Products Co., Ltd., add 4 kg of dimethyl ether, 3 kg of chitosan with a molecular weight of 500,000-800,000 (dissolved with 3% acetic acid) and expanded perlite with a center hole 8 according to 70 kg of combined polyether. kg, add 3 kg of decabromodiphenyl ether, mix evenly to form a polyether composition, and then mix it with diphenylmethane diisocyanate (MDI) at a mass ratio of 1:1.3 and pour it into the cavity of the solar water heater for foaming. After curing at high temperature, the organic fireproof foaming insulation layer of the solar water heater water tank of the present invention can be obtained.

Embodiment 3

[0043] Weigh 6 parts of glycerol polyether resin, 4 parts of glycol ether resin, 0.3 part of foam stabilizer water-soluble silicone oil, 0.3 part of catalyst N, N-dimethylcyclohexylamine, 0.2 part of curing agent dilaurel Acetate dibutyltin, 0.3 part of water, after mixing, form raw material all-water type combination polyether, then add 4 kilograms of dimethyl ether, 5 kilograms of chitosan of 500,000-800,000 molecular weight according to 80 kilograms of all-water type combination polyethers (with 3% acetic acid solution) and 8 kg of expanded perlite with a central hole, or tetrabromobisphenol. Mix evenly to form a polyether composition, then mix with toluene diisocyanate (TDI) at a mass ratio of 1:1.3 and pour it into the cavity of the solar water heater tank for foaming, and after high temperature curing, the solar water heater tank of the present invention can be obtained Organic fireproof foam insulation.

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Abstract

The invention relates to the technical field of polyurethane thermal insulation materials, in particular to an organic fireproof foaming material applied to thermal insulation of a water tank of a solar water heater. The material adopts the technical scheme that the material is formed by mixing and foaming isocyanate and a polyether composite, and the polyether composite contains main raw materials such as composite polyether, dimethyl ether, chitosan, an organic flame retardant and expanded perlite. The polyurethane hard foaming thermal insulation material overcomes the defect of great shrinkage after foaming forming, prevents the water tank from deformation, bulking, barring and even cracking, and ensures the thermal insulation property and the flame retardancy of the water tank of the water heater.

Description

technical field [0001] The invention relates to the technical field of polyurethane thermal insulation materials, and more specifically relates to a rigid polyurethane foam organic fireproof thermal insulation material applied to the thermal insulation of solar water heater water tanks. Background technique [0002] With the increasing shortage of energy and the increasing pressure on environmental protection, countries around the world have begun to promote the development of renewable energy, among which solar energy is the most widely used and developed renewable energy with the best development prospects, and has been widely used in various industries , the solar water heater industry is one of them. Our country is rich in solar energy resources and has broad prospects for solar energy utilization. At present, it is the first user and producer of solar water heaters in the world. [0003] As we all know, for solar water heaters, the selection of water tank insulation ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/48C08K7/26C08K5/06C08L75/08C08L5/08
Inventor 蒙献芳马福宽马莉莎蒙胜杰蒙强杰蒙献金甘伟平马珍梁志坚韦启思梁洪方来临马昭键来光业
Owner SHANDONG HEZE TONGYANG AMPEREX TECH