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Flame-retardant polystyrene insulation material and preparation method thereof

An insulation material, polystyrene technology, applied in the field of flame-retardant polystyrene insulation material and its preparation, can solve the problems of high density, high thermal conductivity, unable to meet the requirements of lightweight foam, etc., achieve low density and thermal conductivity, preparation The method is simple and avoids the effect of high material density

Active Publication Date: 2018-12-25
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since most of the composite material is Portland cement, the resulting material has high density and high thermal conductivity, which cannot meet the requirements of lightweight foam

Method used

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  • Flame-retardant polystyrene insulation material and preparation method thereof
  • Flame-retardant polystyrene insulation material and preparation method thereof
  • Flame-retardant polystyrene insulation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Stir and mix 2 parts of EPS foam particles, 20 parts of ammonium alginate water-based adhesive with a concentration of 5%, 5 parts of montmorillonite, 0.1 part of calcium chloride, 0.01 part of methyl cellulose, and 2 parts of copper hydroxide Put it into a mold, and then mold it under a pressure of 2MPa, and then get a flame-retardant polystyrene insulation material through conventional freeze-drying.

[0040] The density of the flame retardant polystyrene insulation material is 100kg / m 3 , the compressive strength is 0.25MPa, the thermal conductivity is 0.052W / mK, the combustion calorific value is 2.78MJ / kg, the oxygen index is 70%, the vertical combustion grade is V-0 grade, and the fireproof combustion grade is A2 grade.

Embodiment 2

[0042] Stir and mix 3 parts of EPS foam particles, 30 parts of sodium alginate water-based adhesive with a concentration of 10%, 5 parts of montmorillonite, 0.3 part of calcium sulfate, 0.01 part of sodium methylcellulose, and 5 parts of magnesium hydroxide Put it into the mold, then mold it under 1MPa pressure, and get the flame retardant polystyrene insulation material through conventional freeze drying.

[0043] The density of the flame retardant polystyrene insulation material is 110kg / m 3 , the compressive strength is 0.23MPa, the thermal conductivity is 0.055W / mK, the combustion calorific value is 2.38MJ / kg, the oxygen index is 65%, the vertical combustion grade is V-0 grade, and the fireproof combustion grade is A2 grade.

Embodiment 3

[0045] 5 parts of EPS foam particles, 50 parts of propylene glycol alginate water-based adhesive with a concentration of 20%, 10 parts of sepiolite, 0.5 parts of calcium carbonate, 0.05 parts of carboxymethyl cellulose, 1 part of magnesium hydroxide, 1 part The aluminum hydroxide is stirred and mixed evenly and poured into the mold, then molded under a pressure of 3MPa, and then conventionally freeze-dried to obtain a flame-retardant polystyrene insulation material.

[0046] The density of the flame retardant polystyrene insulation material is 115kg / m 3 , the compressive strength is 0.3MPa, the thermal conductivity is 0.058W / mK, the combustion calorific value is 2.12MJ / kg, the oxygen index is 68%, the vertical combustion grade is V-0 grade, and the fireproof combustion grade is A2 grade.

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Abstract

The invention discloses a flame-retardant polystyrene insulation material. The flame-retardant polystyrene insulation material is prepared from, by weight, 2-50 parts of foamed polystyrene foam particles, 20-1000 parts of water-based adhesive, 5-100 parts of nano clay, 0.1-10 parts of reinforcing agent, 0.01-1 part of thickening water-retaining agent and 2-50 parts of heat inhibiting agent, wherein the raw materials are stirred and mixed evenly and poured into a mold, then compression molding is performed under the pressure of 1-10 MPa, and the material is prepared through conventional freeze drying. The density of the material is 70-150 kg / m<3>, the compression strength is 0.2-0.3 MPa, the coefficient of thermal conductivity is 0.045-0.06 W / mK, a combustion heat value is 2-2.9 MJ / kg, an oxygen index is 50-70%, the vertical burning grade is level V-0, and the flame-retardant grade is class-A2. The material can achieve the class-A2 flame-retardant grade of a high-rise civil building insulation material, can also obtain excellent flame retardancy under the situation that no flame retardant is added, also has other good comprehensive performance and is an ideal insulation material. In addition, the preparation method is simple, the raw materials are environmentally friendly, and the material has a broad market prospect.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation materials and their preparation, and in particular relates to a flame-retardant polystyrene thermal insulation material and a preparation method thereof. Background technique [0002] Expandable polystyrene foam (EPS) is a foam material with a porous structure inside that is foamed by adding a foaming agent to polystyrene resin. It has the characteristics of low thermal conductivity, light weight, high hardness and stable chemical properties. It has been widely used in building exterior wall insulation and other industries. It is the largest building thermal insulation material in the market. However, due to the flammability of polystyrene foam, it also brings fire hazards. Hexabromocyclododecane (HBCD) is the most effective flame retardant for flame retardant polystyrene foam, however, the Stockholm Convention has listed HBCD as a persistent organic pollutant and has banned its use gl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L5/04C08L89/00C08L5/00C08L3/02C08L29/04C08L1/28C08L67/00C08K3/34C08K3/16C08K3/22C08K3/30C08K3/26C08K3/32C08K3/36C08K7/06C08K3/38
CPCC08K2201/011C08L3/02C08L5/00C08L5/04C08L29/04C08L89/00C08L2201/02C08L2205/025C08L2205/03C08L2205/035C08L2205/16C08L25/06C08L1/28C08K3/346C08K2003/162C08K2003/2248C08K2003/3045C08K2003/2224C08L1/286C08K3/34C08K2003/265C08K2003/2227C08K2003/325C08K2003/2293C08K2003/2296C08K2003/2234C08K3/36C08K2003/3063C08K7/06C08L67/00C08K3/38
Inventor 王玉忠朱宗民廖望商珂
Owner SICHUAN UNIV