Fluorine-free polyurethane heat insulation material

A thermal insulation material, polyurethane technology, applied in the field of thermal insulation materials, can solve problems such as vacuum nozzle foam cracking, atmospheric ozone layer destruction, foam and shell shedding, etc., and achieve low equipment requirements, low cost, and good wear resistance and corrosion resistance.

Inactive Publication Date: 2016-12-21
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 cra...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A fluorine-free polyurethane thermal insulation material, which is made of foamed raw materials with the following proportions by weight:

[0023] Toluene diisocyanate 60kg, polyether polyol A 40kg, polyether polyol B 20kg, catalyst 1kg, flame retardant 1kg, foaming agent 0.5kg, silicone oil 4kg, deionized water 12kg.

[0024] The polyether polyol A has a viscosity of 3200 mPa·s, a hydroxyl value of 370 mgKOH / g, and an average functionality of 4.

[0025] The polyether polyol B has a viscosity of 3500 mPa·s, a hydroxyl value of 400 mgKOH / g, and an average functionality of 3.

[0026] The catalyst is a mixture of pentamethyldiethylenetriamine, triethylenediamine and 2,4,6-tris(dimethylaminomethyl)phenol in a mass ratio of 1:2:1.

[0027] The flame retardant is chloroalkyl phosphate.

[0028] The blowing agent is cyclopentane.

[0029] The preparation method of above-mentioned fluorine-free type polyurethane insulation material is as follows:

[0030] (1) According to...

Embodiment 2

[0034] A fluorine-free polyurethane thermal insulation material, which is made of foamed raw materials with the following proportions by weight:

[0035] Toluene diisocyanate 70kg, polyether polyol A 50kg, polyether polyol B 25kg, catalyst 2kg, flame retardant 2kg, blowing agent 0.8kg, silicone oil 6kg, deionized water 15kg.

[0036] The polyether polyol A has a viscosity of 3200 mPa·s, a hydroxyl value of 380 mgKOH / g, and an average functionality of 4.5.

[0037] The polyether polyol B has a viscosity of 3500 mPa·s, a hydroxyl value of 410 mgKOH / g, and an average functionality of 3.5.

[0038] The catalyst is a mixture of pentamethyldiethylenetriamine, triethylenediamine and 2,4,6-tris(dimethylaminomethyl)phenol in a mass ratio of 1:2:1.

[0039] The flame retardant is chloroalkyl phosphate.

[0040] The blowing agent is cyclopentane.

[0041] The preparation method of the above-mentioned fluorine-free type polyurethane insulation material comprises the following steps:

...

Embodiment 3

[0046] A fluorine-free polyurethane thermal insulation material, which is made of foamed raw materials with the following proportions by weight:

[0047] Toluene diisocyanate 80kg, polyether polyol A 60kg, polyether polyol B 30kg, catalyst 3kg, flame retardant 3kg, blowing agent 1kg, silicone oil 8kg, deionized water 18kg.

[0048] The polyether polyol A has a viscosity of 3200 mPa·s, a hydroxyl value of 390 mgKOH / g, and an average functionality of 5.

[0049] The polyether polyol B has a viscosity of 3500 mPa·s, a hydroxyl value of 420 mgKOH / g, and an average functionality of 4.

[0050] The catalyst is a mixture of pentamethyldiethylenetriamine, triethylenediamine and 2,4,6-tris(dimethylaminomethyl)phenol in a mass ratio of 1:2:1.

[0051] The flame retardant is chloroalkyl phosphate.

[0052] The blowing agent is cyclopentane.

[0053] The preparation method of above-mentioned polyurethane insulation material comprises the steps:

[0054] (1) According to the mass ratio...

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Abstract

The invention discloses a fluorine-free polyurethane heat insulation material. The fluorine-free polyurethane heat insulation material is prepared through foaming the following raw materials: by weight, 60-80 parts of toluene diisocyanate, 40-60 parts of polyether polyol A, 20-30 parts of polyether polyol B, 1-3 parts of a catalyst, 1-3 parts of a fire retardant, 0.5-1 part of a foaming agent, 4-8 parts of silicone oil and 12-18 parts of deionized water. The fluorine-free polyurethane heat insulation material has the advantages of high strength, light mass, low heat conductivity, good dimension stability, good heat insulation effect, good wear and corrosion resistance, high-efficiency fire retardation ability, and realization of energy saving and environmental protection due to no use of a chlorofluorocarbon (CFC) foaming gent and use of cyclopentane as the foaming agent. A preparation method of the fluorine-free polyurethane heat insulation material has the advantages of simplicity, low cost, low device requirements, environmentally-friendly production process, easiness in industrial production, and suitableness for large-scale promotion and application.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials, in particular to a fluorine-free 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 ...

Claims

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Application Information

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IPC IPC(8): C08J9/14C08G18/76C08G18/48C08K5/521
CPCC08J9/141C08G18/4816C08G18/7614C08J2203/14C08J2205/052C08J2375/08C08K5/521
Inventor 谢彤马付杰黄可煜陆竣行邓颍成刘建麟莫小青张立颖李光明陈明贤
Owner NANNING KEYU ENERGY TECH CO LTD
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