Halogen-free non-phosphorus high-flame-retardant rigid polyurethane foam insulation material and preparation method thereof

A foam insulation material, rigid polyurethane technology, applied in the field of flame-retardant rigid polyurethane foam insulation materials

Active Publication Date: 2014-06-04
BEIJING ACAD OF BUILDING ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no report on the study of increasing the limiting oxygen index of rigid polyurethane foam to 90 through the synergistic effect of the composite flame retardant composed of expandable graphite and inorganic particles

Method used

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  • Halogen-free non-phosphorus high-flame-retardant rigid polyurethane foam insulation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1.0 kg of polyethylene glycol with a hydroxyl value of 400 mg, 1.0 kg of expandable graphite with a particle diameter of 100 microns, 0.8 kg of aluminum hydroxide with a particle diameter of 1 micron, and 0.01 kg of tris(dimethylaminopropyl) hexahydrotriazine kg, 0.02 kg of silicone oil, 0.15 kg of γ-aminopropyltrimethoxysilane coupling agent, 0.05 kg of triethanolamine, and 0.6 kg of 141b foaming agent. After mixing, stir evenly at 25°C to form a combined white material . 2.0 kilograms of polymethyl polyphenyl polyisocyanates (PAPI) with an isocyanate content of 31% are mixed with 2.0 kilograms of aluminum hydroxide with a particle size of 10 microns, and stirred evenly at 35 ° C to form a combination black material. Quickly pour the above-mentioned combined white material and combined black material into the mold, and place it in a 70-degree oven for curing for 30 minutes to obtain a flame-retardant rigid polyurethane foam insulation material.

[0033] The limiting ...

Embodiment 2

[0047] 1.0 kg of polyethylene glycol with a hydroxyl value of 400 mg, 0.7 kg of expandable graphite with a particle size of 1 micron, 0.01 kg of tris(dimethylaminopropyl)hexahydrotriazine, 0.02 kg of organic silicone oil, γ-aminopropyl After mixing 0.15 kg of trimethoxysilane coupling agent, 0.05 kg of triethanolamine, and 0.6 kg of 141b foaming agent, stir evenly under the condition of 25°C to form a combined white material. 2.0 kilograms of polymethyl polyphenyl polyisocyanates (PAPI) with an isocyanate content of 31% are mixed with 2.0 kilograms of magnesium hydroxide with a particle size of 100 microns, and stirred evenly at 35°C to form a combination black material. Quickly pour the above-mentioned combined white material and combined black material into the mold, and place it in a 100-degree oven for curing for 30 minutes to obtain a flame-retardant rigid polyurethane foam insulation material.

[0048] The limiting oxygen index of the above-mentioned flame-retardant rig...

Embodiment 3

[0053] 1.0 kg of polyethylene glycol with a hydroxyl value of 400 mg, 0.7 kg of expandable graphite with a particle size of 10 microns, 0.01 kg of tris(dimethylaminopropyl)hexahydrotriazine, 0.02 kg of organic silicone oil, γ-aminopropyl Mix 0.15 kg of methyldiethoxysilane, 0.05 kg of triethanolamine, and 0.6 kg of 141b blowing agent, and stir evenly at 25°C to form a combined white material. 2.0 kilograms of polymethyl polyphenyl polyisocyanates (PAPI) with an isocyanate content of 31% are mixed with 2.0 kilograms of aluminum hydroxide with a particle size of 100 microns, and stirred evenly at 35 ° C to form a combined black material. Quickly pour the above-mentioned combined white material and combined black material into the mold, and place it in a 50-degree oven for curing for 30 minutes to obtain a flame-retardant rigid polyurethane foam insulation material.

[0054] The limiting oxygen index of the above-mentioned flame-retardant rigid polyurethane foam insulation mater...

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Abstract

The invention belongs to the field of high-flame-retardant rigid polyurethane foam insulation materials, which particularly relates to a halogen-free non-phosphorus high-flame-retardant rigid polyurethane foam insulation material and a preparation method thereof. The method comprises the following steps: mechanically stirring a mixture formed by polyether (or polyester) polyhydric alcohols, a catalyst, a silicone oil, a silane coupling agent, a foaming agent, expansible graphite and inorganic fillers (one or more than one material selected from magnesium hydrate, kaolin, aluminium hydroxide and calcium carbonate) in certain proportion and evenly mixing; then, fully mixing the mixture with polyisocyanates; pouring into a mould of 50 DEG C to 100 DEG C; closing a mould cover; and finally, foaming and curing, thereby obtaining the halogen-free non-phosphorus high-flame-retardant rigid polyurethane foam insulation material. The flame retardation of the insulation material is improved under the synergistic effect of the expansible graphite and the inorganic fillers, so that the limit oxygen index of the insulation material can reach 90; and the vertical combustion performance of the insulation material can reach the level UL94 V0. According to the insulation material provided by the invention, the defect of a flame retardant containing halogen and phosphorus is overcome; and the flame retardation of the insulation material is improved under the synergistic effect of the environment-friendly fillers. Thus, the application requirement of the insulation material in practical engineering can be satisfied.

Description

technical field [0001] The invention belongs to the field of flame-retardant rigid polyurethane foam insulation materials, in particular to a preparation method and application of a halogen-free and phosphorus-free highly flame-retardant rigid polyurethane foam insulation material. Background technique [0002] Rigid polyurethane foam insulation material is a foam material made of polyhydric hydroxyl compound and isocyanate as the main raw material, under the action of catalyst and foaming agent, through addition polymerization and foaming. Rigid polyurethane foam has excellent physical and mechanical properties, electrical properties, acoustic properties and chemical corrosion resistance. Rigid polyurethane foam insulation materials have low thermal conductivity, low density, high strength, low water absorption, good heat insulation, insulation, sound insulation, and good chemical stability, so they are widely used in petroleum, chemical, transportation, construction, daily...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L75/08C08K13/04C08K7/24C08K3/22C08K3/34C08K3/26C08J9/14C08J9/08C08J9/10
Inventor 王万金贺奎董全霄朱宁樊勇夏义兵袁振
Owner BEIJING ACAD OF BUILDING ENG
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