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Polyurethane inorganic flame-retardant heat-insulation material for solar water tanks and method for preparing polyurethane inorganic flame-retardant heat-insulation material

A solar water tank and inorganic flame retardant technology, applied in the field of thermal insulation materials, can solve the problems of short-circuit fire, no flame retardancy, and reduced thermal insulation performance of polyurethane, and achieve the effects of improving thermal insulation effect, improving interface bonding strength, and improving expansion rate.

Inactive Publication Date: 2019-04-05
ANHUI MINGGUANG ZHONGXING SUNLIGHT NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the production process of polyurethane insulation materials, it is inevitable to add some inorganic and organic fillers to improve the strength of the material, but at the same time reduce the insulation performance of polyurethane
In addition, polyurethane insulation materials also have the disadvantage of no flame retardancy. At this time, some solar water heaters are equipped with electric heaters. If the circuit is aging, it will cause a short circuit and cause a fire.

Method used

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  • Polyurethane inorganic flame-retardant heat-insulation material for solar water tanks and method for preparing polyurethane inorganic flame-retardant heat-insulation material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A polyurethane inorganic flame-retardant insulation material for solar water tanks, made of the following raw materials in parts by weight: 80 parts of polyether polyol, 130 parts of isocyanate, 3 parts of nano-silica, 10 parts of modified expanded vermiculite, 1 part of chitosan grafted modified silane, 5 parts of foaming agent, 0.1 part of foam stabilizer, 2 parts of catalyst, 0.5 part of crosslinking agent;

[0019] Wherein, said polyether polyol comprises sorbitol polyether polyol, glycerol polyether polyol and polyoxypropylene glycol, and the weight ratio of sorbitan polyether polyol, glycerol polyether polyol and polyoxypropylene glycol is 5: 4:1; the isocyanate is toluene diisocyanate; the blowing agent is dichlorofluoroethane, and the foam stabilizer is a silicone foam stabilizer, such as 3-(polyethylene glycol monomethyl ether) Propyltrialkoxysilane; the catalyst is diethanol monoisopropanolamine; the crosslinking agent is glycerin;

[0020] The modified expan...

Embodiment 2

[0024] A polyurethane inorganic flame-retardant insulation material for solar water tanks, made of the following raw materials in parts by weight: 100 parts of polyether polyol, 110 parts of isocyanate, 8 parts of nano-silica, 5 parts of modified expanded vermiculite, 3 parts of chitosan grafted modified silane, 2 parts of foaming agent, 0.5 part of foam stabilizer, 0.5 part of catalyst, 1 part of crosslinking agent;

[0025] Wherein, said polyether polyol comprises sorbitol polyether polyol, glycerol polyether polyol and polyoxypropylene glycol, and the weight ratio of sorbitan polyether polyol, glycerol polyether polyol and polyoxypropylene glycol is 7: 2:1; the isocyanate is diphenylmethane diisocyanate; the blowing agent is trans-1-chloro-3,3,3-trifluoropropene, and the foam stabilizer is a silicone foam stabilizer , such as 3-[poly(ethylene glycol-co-propylene glycol) monomethyl ether]propyltrialkoxysilane; the catalyst is hydroxyethylethylenediamine; the crosslinking age...

Embodiment 3

[0030] A polyurethane inorganic flame-retardant insulation material for solar water tanks, made of the following raw materials in parts by weight: 90 parts of polyether polyol, 120 parts of isocyanate, 5 parts of nano-silica, 7 parts of modified expanded vermiculite, 2 parts of chitosan grafted modified silane, 3 parts of foaming agent, 0.3 part of foam stabilizer, 1 part of catalyst, 0.8 part of crosslinking agent;

[0031] Wherein, said polyether polyol comprises sorbitol polyether polyol, glycerol polyether polyol and polyoxypropylene glycol, and the weight ratio of sorbitan polyether polyol, glycerol polyether polyol and polyoxypropylene glycol is 6: 3:1; the isocyanate is toluene diisocyanate; the blowing agent is dichlorofluoroethane, and the foam stabilizer is a silicone foam stabilizer, such as 3-(polyethylene glycol monomethyl ether) Propyltrialkoxysilane; the catalyst is diethanol monoisopropanolamine; the crosslinking agent is 1,2,6-trihydroxyhexane, pentaerythritol...

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Abstract

The invention provides a polyurethane inorganic flame-retardant heat-insulation material for solar water tanks and a method for preparing the polyurethane inorganic flame-retardant heat-insulation material. The polyurethane inorganic flame-retardant heat-insulation material for the solar water tanks is prepared from raw materials including, by weight, 80-100 parts of polyether polyol, 110-130 parts of isocyanate, 3-8 parts of nanometer silicon dioxide, 5-10 parts of modified expanded vermiculite, 1-3 parts of chitosan grafted modified silane, 2-5 parts of foaming agents, 0.1-0.5 part of foam stabilizers, 0.5-2 parts of catalysts and 0.5-1 part of cross-linking agents. The polyurethane inorganic flame-retardant heat-insulation material and the method have the advantages that the polyurethane inorganic flame-retardant heat-insulation material prepared by the aid of the method is excellent in mechanical property such as compressive strength, the shortcoming of flammability of polyurethaneheat-insulation materials can be overcome by the aid of the polyurethane inorganic flame-retardant heat-insulation material and the method, and the heat-insulation performance of the solar water tanks can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials, in particular to a polyurethane inorganic flame-retardant thermal insulation material for solar water tanks and a preparation method thereof. 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 materials is very important. At present, polyur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/64C08G18/48C08K9/04C08K3/36C08K7/26C08J9/14C08B37/08C08G101/00
CPCC08B37/003C08G18/4081C08G18/4804C08G18/4825C08G18/6484C08G2101/00C08J9/144C08J2203/142C08J2375/08C08K3/36C08K7/26C08K9/04C08K2201/011
Inventor 陈兵
Owner ANHUI MINGGUANG ZHONGXING SUNLIGHT NEW ENERGY TECH CO LTD
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