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Flame-retardant polyurethane foaming thermal insulation material for thermal insulation sandwich panel and preparation method thereof

A technology for thermal insulation sandwich panels and thermal insulation materials, which is applied in the field of thermal insulation materials and can solve problems such as adverse effects on cell quality, damage to cell structure, and effects on cell stability.

Active Publication Date: 2021-04-16
ANHUI EMINENT BUILDING MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of flame retardants will affect the stability of the cells, destroy the structure of the cells, and have a negative impact on the quality of the formed cells, thus affecting the strength and thermal insulation performance of polyurethane foam materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A flame-retardant polyurethane foam insulation material for thermal insulation sandwich panels, including the following raw materials in parts by weight: 20 parts of polyols, 35 parts of isocyanates, 15 parts of flame retardants, 2 parts of Momentive Niax L-6863 silicone oil, and nano additives 1 part, 1.5 parts of cyclopentane, 1 part of organotin catalyst, 0.5 parts of pentaerythritol, 0.2 parts of water;

[0023] The nano-additive is composed of quaternary ammonium salt intercalation bentonite and carboxylated nano-cellulose with a mass ratio of 1:3.

[0024] The preparation method of the quaternary ammonium salt intercalated bentonite is as follows: add 200 mesh bentonite into water and disperse evenly to obtain a bentonite suspension with a solid content of 5%, then add cetyltrimethylammonium bromide, stir at 75°C for 4h, Then centrifuge, wash, and dry to obtain the product, wherein the mass ratio of cetyltrimethylammonium bromide to bentonite is 0.3:1.

[0025] T...

Embodiment 2

[0032] A flame-retardant polyurethane foam insulation material for thermal insulation sandwich panels, including the following raw materials in parts by weight: 30 parts of polyols, 45 parts of isocyanates, 20 parts of flame retardants, 3 parts of Momentive Niax L-6863 silicone oil, and nano additives 2 parts, 2.5 parts of cyclopentane, 2 parts of organotin catalyst, 1 part of pentaerythritol, 0.3 parts of water;

[0033] The nano-additive is composed of quaternary ammonium salt intercalation bentonite and carboxylated nano-cellulose with a mass ratio of 1:5.

[0034] The preparation method of quaternary ammonium salt intercalated bentonite is as follows: add 400 mesh bentonite into water and disperse evenly to obtain a bentonite suspension with a solid content of 10%, then add cetyltrimethylammonium bromide, stir at 85°C for 2h, Then centrifuge, wash, and dry to obtain the product, wherein the mass ratio of cetyltrimethylammonium bromide to bentonite is 0.4:1.

[0035] The p...

Embodiment 3

[0042] A flame-retardant polyurethane foam insulation material for thermal insulation sandwich panels, including the following raw materials in parts by weight: 25 parts of polyols, 40 parts of isocyanates, 18 parts of flame retardants, 2.5 parts of Momentive Niax L-6863 silicone oil, and nano additives 1.5 parts, 2 parts cyclopentane, 1.5 parts organotin catalyst, 0.8 parts pentaerythritol, 0.25 parts water;

[0043] The nano-additive is composed of quaternary ammonium salt intercalation bentonite and carboxylated nano-cellulose with a mass ratio of 1:4.

[0044] The preparation method of the quaternary ammonium salt intercalated bentonite is as follows: add 300 mesh bentonite into water and disperse evenly to obtain a bentonite suspension with a solid content of 8%, then add cetyltrimethylammonium bromide, and stir at 80°C for 3h. Then centrifuge, wash, and dry to obtain the product, wherein the mass ratio of cetyltrimethylammonium bromide to bentonite is 0.35:1.

[0045] T...

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Abstract

The invention discloses a flame-retardant polyurethane foaming thermal insulation material for a thermal insulation sandwich panel. The flame-retardant polyurethane foaming thermal insulation material is prepared from the following raw materials in parts by weight: 20 to 30 parts of polyol, 35 to 45 parts of isocyanate, 15 to 20 parts of a flame retardant, 2 to 3 parts of silicone oil, 1 to 2 parts of a nano additive, 1.5 to 2.5 parts of cyclopentane, 1 to 2 parts of a catalyst, 0.5 to 1 part of a cross-linking agent and 0.2 to 0.3 part of water, wherein the nano additive is prepared from quaternary ammonium salt intercalated bentonite and carboxylated nano cellulose. The invention further discloses a preparation method of the flame-retardant polyurethane foaming thermal insulation material for the thermal insulation laminboard. The flame-retardant polyurethane foaming thermal insulation material for the thermal insulation laminboard has excellent strength, thermal insulation performance and flame retardance and is good in use performance.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials, in particular to a flame-retardant polyurethane foam thermal insulation material for thermal insulation sandwich panels and a preparation method thereof. Background technique [0002] Insulation sandwich panel is a widely used building insulation material, mainly composed of color steel plate on the outer surface and insulation material used as core material. Among them, commonly used insulation materials for insulation sandwich panels include phenolic insulation materials, polyurethane insulation materials, polystyrene insulation materials, etc. Polyurethane foam material has the advantages of light weight, high strength, good dimensional stability and low thermal conductivity, and is considered to be the best performance insulation material at present. However, polyurethane foam materials are flammable and have a low safety factor. In order to improve the flame retardant ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/40C08G18/42C08G18/48C08K9/04C08K3/34C08K3/22C08K3/32C08L1/04C08L75/04C08J9/14C08G101/00
Inventor 万贤虎万子涵
Owner ANHUI EMINENT BUILDING MATERIALS TECH
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