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External wall thermal insulation material and preparation method thereof

A technology of external wall insulation and raw materials, applied in the field of external wall insulation materials and its preparation, can solve the problems of high cost and poor mechanical properties of rigid foam plastics, and achieve enhanced fire performance, good flame retardant effect, good flame retardant and smoke suppression effect of effect

Inactive Publication Date: 2016-03-30
NANYANG INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Invention patent ZL201310710235.5 discloses a polyurethane rigid foam, which is obtained by mixing and foaming the components isocyanate and polyether composition, wherein the polyether composition consists of 70-85 parts of raw material combination polyether, dimethyl ether 3 ~7 parts of mullite, 8~15 parts of mullite, and 4~8 parts of silicon carbide fine powder. The present invention can overcome the disadvantages of poor mechanical properties of existing hard foam plastics. In addition to ensuring the original performance of high temperature resistance and fire resistance, it also It has good strength and toughness, but mullite is a rare mineral and the cost is high

Method used

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  • External wall thermal insulation material and preparation method thereof

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[0043] The present invention also provides a preparation method of the above-mentioned external wall thermal insulation material, comprising the following steps:

[0044] (1) Put 30~35 parts of flame retardant and 25~30 parts of smoke suppressant into 65~75 parts of polyether polyol, stir and mix evenly at a speed of 3000r / min, then ultrasonically treat for 1.5~2h;

[0045] (2) Add 80~90 parts of diphenylmethane diisocyanate, 1~5 parts of reaction catalyst, 8~15 parts of crosslinking catalyst to the mixture obtained in step (1), stir for 2~5 minutes, and the speed is 3000r / min;

[0046] (3) Add 20-30 parts of straw fiber, 10-15 parts of glass fiber, 20-25 parts of nano-organic montmorillonite, 1-5 parts of coupling agent, 15-25 parts of Deionized water, 1.5~5 parts of foam stabilizer, stirring for 1~3min, the speed is 3000r / min;

[0047] (4) inject the mixture obtained in step (3) into the mold for foaming, expansion and shaping;

[0048] (5) Curing the foam prepared in step...

Embodiment 1

[0054] An external wall insulation material, comprising the following raw materials in parts by weight: 80 parts of diphenylmethane diisocyanate, 65 parts of polyether polyol, 20 parts of straw fiber, 10 parts of glass fiber, and nano-organic Mongolian with a particle size of 50-75nm 20 parts of soil removal, 30 parts of a mixture of modified expandable graphite and ammonium polyphosphate (the weight ratio of modified expandable graphite: ammonium polyphosphate is 1:1), a mixture of molybdenum trioxide and zinc borate (molybdenum trioxide: The weight ratio of zinc borate is 2:8) 25 parts, 1 part of dibutyltin dilaurate, 8 parts of pentamethyldiethylenetriamine, 1 part of 3-aminopropyltriethoxysilane, 15 parts of deionized water, 1.5 parts of water-soluble silicone oil.

[0055] Among them, the nano-organic montmorillonite is prepared by organically treating the montmorillonite with octadecyl quaternary ammonium salt.

[0056] Wherein, the preparation method of modified expand...

Embodiment 2

[0067] An external wall thermal insulation material, comprising the following raw materials in parts by weight: 82 parts of diphenylmethane diisocyanate, 66 parts of polyether polyol, 21 parts of straw fiber, 11 parts of glass fiber, and nano-organic Mongolian with a particle size of 50-75nm 21 parts of soil removal, a mixture of modified expandable graphite and ammonium polyphosphate (the weight ratio of modified expandable graphite: ammonium polyphosphate is 5.5:4.5), 31 parts, a mixture of molybdenum trioxide and zinc borate (molybdenum trioxide: The weight ratio of zinc borate is 2.5:7.5) 26 parts, 2 parts of dibutyltin dilaurate, 9 parts of dimethylhexylamine, 2 parts of γ-methacryloxypropyl trimethoxysilane, 16 parts of deionized water Parts, 2 parts of water-soluble silicone oil.

[0068] Among them, the nano-organic montmorillonite is prepared by organically treating the montmorillonite with octadecyl quaternary ammonium salt.

[0069] The preparation method of the ab...

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Abstract

The invention discloses an external wall thermal insulation material and a preparation method thereof. The external wall thermal insulation material is prepared from the following raw materials in parts by weight: 80-90 parts of methylene diphenyl diisocyanate, 65-75 parts of polyether polyol, 20-30 parts of straw fiber, 10-15 parts of glass fiber, 20-25 parts of organic nano-montmorillonite, 30-35 parts of flame retardant, 25-30 parts of smoke suppressor, 1-5 parts of reaction catalyst, 8-15 parts of crosslinking catalyst, 1-5 parts of coupling agent, 15-25 parts of deionized water and 1.5-5 parts of foam stabilizer. The prepared external wall thermal insulation material has the advantages of good fireproof property, high thermal insulation property, high wear resistance, high stability, high physical and mechanical properties, low cost and saving of energy.

Description

technical field [0001] The invention relates to a building material and a preparation method thereof, in particular to an exterior wall thermal insulation material and a preparation method thereof. Background technique [0002] With the introduction of the concept of "energy saving, low carbon, and environmental protection", residential energy conservation has been paid more and more attention in my country, and the country has higher technical requirements for building exterior wall insulation, especially in recent years. High-rise building fires have frequently occurred , causing serious casualties and property damage. It is imminent to develop a flame-retardant energy-saving thermal insulation material that meets the requirements of modern buildings. [0003] Rigid polyurethane foam is a thermal insulation material with excellent performance. It has the advantages of light weight, good thermal insulation, excellent cushioning and shock absorption performance, and strong a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L97/02C08L83/04C08K13/06C08K9/02C08K7/14C08K3/34C08K7/24C08K3/32C08K3/38C08K3/22C08G18/48C08G101/00
CPCC08G18/48C08K2201/003C08K2201/011C08L75/08C08L2201/02C08L2201/08C08L2203/14C08L2205/03C08L2205/16C08G2110/0083C08L97/02C08L83/04C08K13/06C08K9/02C08K7/14C08K3/346C08K7/24C08K2003/323C08K2003/387C08K2003/2255
Inventor 杜红伟褚卫瑞胡炜李明霞
Owner NANYANG INST OF TECH
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