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Polyurethane heat insulation material

An insulation material, polyurethane technology, applied in the field of insulation materials, can solve the problems of vacuum nozzle foam cracking, foam and shell falling off, atmospheric ozone layer destruction, etc., and achieve the effect of low equipment requirements, good wear resistance and corrosion resistance, and low cost

Inactive Publication Date: 2016-12-07
NANNING KEYU ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the production process of polyurethane, due to various reasons such as its own characteristics, production process and production workers' operating skills, there is a common problem of foam shrinkage, which may easily cause part or all of the foam and the shell to fall off, and eventually lead to deformation of the shell and vacuum nozzle foam. Cracking, what's more, the hard polyurethane foam between the inner tank and the outer shell is cracked horizontally or vertically, which greatly reduces the insulation effect
In polyurethane rigid foam, the commonly used blowing agent is chlorofluorocarbon (CFC) blowing agent, but because chlorofluorocarbon (CFC) blowing agent has a destructive effect on the atmospheric ozone layer, in order to maintain the ecological environment, international conventions have stipulated it Strict restrictions and regulations have been imposed on the production and use of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A polyurethane thermal insulation material is made by foaming raw materials in the following proportions by weight:

[0023] Toluene diisocyanate 60kg, plant fiber-based polyether polyol 40kg, vegetable oil-based polyether polyol 30kg, catalyst 1kg, foaming agent 0.5kg, silicone oil 1kg, deionized water 6kg.

[0024] The plant fiber-based polyether polyol is a polyether polyol made from agricultural and forestry waste, with a viscosity of 2800 mPa·s and an average functionality of 4.

[0025] The vegetable oil-based polyether polyol is a polyether polyol made from waste oil, with a viscosity of 2800 mPa·s and an average functionality of 4.5.

[0026] The catalyst is N,N-dimethylcyclohexylamine.

[0027] The foaming agent is polyether organopolysiloxane.

[0028] The preparation method of above-mentioned polyurethane insulation material is as follows:

[0029] (1) According to the mass ratio of the above-mentioned raw materials;

[0030] (2) Put toluene diisocyanate,...

Embodiment 2

[0034] A polyurethane thermal insulation material is made by foaming raw materials in the following proportions by weight:

[0035] Toluene diisocyanate 70kg, plant fiber-based polyether polyol 50kg, vegetable oil-based polyether polyol 40kg, catalyst 2kg, foaming agent 0.8kg, silicone oil 2kg, deionized water 7kg.

[0036] The plant fiber-based polyether polyol is a polyether polyol made from agricultural and forestry waste, with a viscosity of 2800 mPa·s and an average functionality of 4.5.

[0037] The vegetable oil-based polyether polyol is a polyether polyol made from non-edible oil, with a viscosity of 2800 mPa·s and an average functionality of 4.8.

[0038] The catalyst is N,N-dimethylcyclohexylamine.

[0039] The foaming agent is polyether organopolysiloxane.

[0040] The preparation method of above-mentioned polyurethane insulation material is as follows:

[0041] (1) According to the mass ratio of the above-mentioned raw materials;

[0042] (2) Put toluene diisoc...

Embodiment 3

[0046] A polyurethane thermal insulation material is made by foaming raw materials in the following proportions by weight:

[0047] Toluene diisocyanate 80kg, plant fiber-based polyether polyol 60kg, vegetable oil-based polyether polyol 50kg, catalyst 3kg, foaming agent 1kg, silicone oil 3kg, deionized water 8kg.

[0048] The plant fiber-based polyether polyol is a polyether polyol made from agricultural and forestry waste, with a viscosity of 2800 mPa·s and an average functionality of 5.

[0049] The vegetable oil-based polyether polyol is a polyether polyol made from waste oil, with a viscosity of 2800 mPa·s and an average functionality of 5.

[0050] The catalyst is N,N-dimethylcyclohexylamine.

[0051] The foaming agent is polyether organopolysiloxane.

[0052] The preparation method of above-mentioned polyurethane insulation material is as follows:

[0053] (1) According to the mass ratio of the above-mentioned raw materials;

[0054] (2) Put toluene diisocyanate, pla...

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Abstract

The invention discloses a polyurethane heat insulation material, which is prepared from the following raw materials in parts by weight through foaming: 60 to 80 parts of toluene diisocynate, 40 to 60 parts of plant fiber based polyether polyol, 30 to 50 parts of plant oil based polyether polyol, 1 to 3 parts of catalysts, 0.5 to 1 part of foaming agents, 1 to 3 parts of silicone oil and 6 to 8 parts of deionized water. The polyurethane heat insulation material has the advantages of high intensity, light weight, low heat conductivity, good dimension stability, good heat insulation effect, good wear-resistant anti-corrosion performance and efficient flame-retardant capability; polyhydric alcohols are prepared from waste, waste grease and the like; the energy is saved; the environment is protected. In addition, the preparation process is simple; the cost is low; the equipment requirements are low; the environment-friendly effect is achieved in the production process; the industrial production is easy; the polyurethane heat insulation material is suitable for large-range popularization and application.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials, in particular to a polyurethane thermal insulation material. Background technique [0002] Ordinary polyurethane insulation materials generally use polyether polyols with high functionality and high hydroxyl value to react with polyisocyanates to form cross-linked polymers. At present, polyurethane is used as insulation material, and its production volume is increasing. It has the advantages of high hardness, high compressive strength, good dimensional stability, light weight, low thermal conductivity, closed cell rate of more than 95%, and good anti-corrosion and wear resistance. It has a wide range of uses and can replace rubber, plastic, nylon, etc., and is used in airports, hotels, building materials, automobile factories, coal mines, cement factories, high-end apartments, villas, landscaping, etc. [0003] In the production process of polyurethane, due to various reason...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/48C08J9/04C08J9/08
CPCC08G18/7614C08G18/4816C08J9/04C08J9/08C08J2203/18C08J2375/08
Inventor 李光明马付杰黄可煜陆竣行邓颍成刘建麟莫小青
Owner NANNING KEYU ENERGY TECH CO LTD
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