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Modified polyurethane rigid foam material and preparation method thereof

A production method and modified material technology, applied in the modified polyurethane rigid foam material and its production field, can solve the problems of insufficient hardness, flammable cost, etc., and achieve hardness improvement, increase hardness, increase oxygen index and combustion residue Effect

Inactive Publication Date: 2013-01-30
汤燕 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention designs a modified polyurethane rigid foam material and its production method, which solves the technical problem that ordinary polyurethane rigid foam has the defects of insufficient hardness, easy burning and high cost as a pure polymer material

Method used

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Effect test

Embodiment 2

[0031] Embodiment 2 of the present invention: choose 1g of expanded graphite more than 100 mesh, choose 99g of calcium carbonate more than 200 mesh, obtain 100g mixed powder after mixing, all mix mixed powder in the 105g isocyanate liquid state material, mix the Fully mixed with 95g of polyether polyol liquid material, and then polymerized by injecting into a mold or free foaming to finally obtain the desired modified polyurethane rigid foam. The density of the modified polyurethane rigid foam material is: 357 kg / m3.

Embodiment 3

[0032] Embodiment 3 of the present invention: select 100g of water slag mineral powder above 420 meshes, all mixed in 95g polyether polyol liquid material, fully mix the compound material and isocyanate liquid material 105g, then inject mold mode or freely Polymerization is carried out by foaming, and the desired modified polyurethane rigid foam material is finally obtained. The modified polyurethane rigid foam has a density of 309 kg / m3. Water slag slag is the product of rapid cooling of blast furnace slag in hot melt state in water, also known as blast furnace water quenched slag, which is a by-product of blast furnace ironmaking.

Embodiment 4

[0033] Embodiment 4 of the present invention: choose 80g of calcium silicate powder more than 200 meshes, choose 20g of volcanic rock powders more than 600 meshes, after mixing, obtain 100g mixed powder, mix all mixed powder into 95g polyether polyol liquid material In the process, the mixed material is fully mixed with 105g of isocyanate liquid material, and then polymerized by injection into the mold or free foaming, and finally the desired modified polyurethane rigid foam is obtained. The modified polyurethane rigid foam material has a density of 306 kg / m3.

[0034] Embodiment 5 of the present invention: choose 30g of volcanic rock powder of more than 600 mesh, choose 70g of water slag mineral powder of more than 420 mesh, and obtain 100g of mixed powder after mixing, wherein 50g of mixed powder is mixed into 95g of polyether polyol liquid In the material, 500g is mixed into 105g isocyanate liquid material, the two mixtures are fully mixed, and then polymerized by injection...

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Abstract

The invention relates to a modified polyurethane rigid foam material and a preparation method thereof. The method comprises the following steps of: selecting an isocyanate liquid state material as a black material, selecting a polyether polyol liquid state material or a combined liquid state material of polyether polyol and polyester polyol as a white material, and mixing inorganic powder in the black material or mixing the inorganic powder in the white material or mixing the inorganic powder in the black material and the white material simultaneously; mixing the black material and the white material which are mixed with the inorganic powder; and performing polymerization reaction of the mixture in a mode of injecting the mixture into a die or a mode of foaming freely to obtain the modified polyurethane rigid foam material. According to the modified polyurethane rigid foam material, isocyanate and the polyether polyol or the combined material of the polyether polyol and the polyester polyol are mixed with the inorganic powder of different types; after the inorganic powder is mixed with polyurethane raw materials, the expression of the inorganic powder is stable, and a cell structure of polyurethane rigid foam is not destroyed after reaction is finished, so that oxygen indexes and combustion residual amount which are directly relevant with combustion resistance are improved obviously, and the hardness of the material is improved.

Description

technical field [0001] The invention relates to a new building material and a manufacturing method thereof, in particular to a modified polyurethane rigid foam material and a manufacturing method thereof. Background technique [0002] Polyurethane rigid foam is a solid with microcellular structure formed by polymerizing isocyanate (commonly known as black material) and polyether polyol (commonly known as white material) or a combination of polyether polyol and polyester polyol. Due to the certain strength of its cell structure, under different density conditions, polyurethane rigid foam exhibits strength, stiffness, toughness, dimensional stability, water resistance, temperature resistance, aging resistance and electrical insulation that meet the specific needs of use. , low thermal conductivity, sound absorption and sound insulation, and sufficient processability, are widely used in the following fields: [0003] 1. Refrigeration and refrigeration equipment in food and oth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/42C08G18/08C08K3/34C08K7/24C08K3/26C08K3/00C08K3/22C08G101/00
Inventor 不公告发明人
Owner 汤燕
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