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Flame-retardant thermal insulation material and preparation method thereof

A flame-retardant, heat-preserving and manufacturing technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problem of high price of foamed phenolic resin materials, easy pulverization of the material surface, loose internal structure, etc. problem, to achieve the effect of superior flame retardant and thermal insulation performance, low cost and light weight

Inactive Publication Date: 2012-06-27
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, foamed phenolic resin is still rare as a wall insulation material, mainly because of the high price of foamed phenolic resin materials, especially the defects such as easy pulverization of the material surface, loose internal structure, large dimensional deformation, and poor mechanical properties. It greatly limits its popularization and application in the thermal insulation of building walls [1-4]

Method used

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  • Flame-retardant thermal insulation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Get 100.0g of phenolic resin, 5.0g of surfactant, 5.0g of blowing agent, 15.0g of curing agent, and then add 20.0g of closed-cell perlite with a particle size of 0.01mm to it after mixing, and pour it into the mold after mixing evenly. Insulate and foam at 70°C for 10 minutes, solidify and form to obtain a 3cm substrate layer. The curing temperature is 70°C, and the curing time is 10 minutes; according to the ratio of 7:3:3:1, magnesium oxide, magnesium chloride hexahydrate, water and 80 The purpose is to mix the sawdust powder evenly to obtain an inorganic material mixture; coat 0.5mm of the inorganic material mixture on both sides of the substrate layer, then cover both sides with a wooden formwork, and then cure for 30 minutes at room temperature to obtain a flame-retardant insulation profile.

[0012] According to the Chinese National Standards for Flame Retardant Thermal Insulation Materials (GB / T10294-1988 and GB8624-1997), the flame retardant thermal insulation ma...

Embodiment 2

[0013] Example 2 Take 100.0g of phenolic resin, 7.0g of surfactant, 15.0g of foaming agent, and 10.0g of curing agent. After mixing and stirring evenly, add 30.0g of closed-cell perlite with a particle size of 0.1mm. After stirring evenly, add it into the mold , foamed at 60°C for 20 minutes and solidified to obtain a 5cm substrate layer. The curing temperature was 60°C and the time was 20 minutes. According to the ratio of 7:3:3:1, magnesium oxide, magnesium chloride hexahydrate, water and 90 Purpose Straw powder is mixed evenly to obtain an inorganic material mixture; 1.0 mm of inorganic material mixture is coated on both sides of the substrate layer, and then both sides are covered with wooden templates, and then cured at room temperature for 40 minutes to obtain a flame-retardant thermal insulation profile.

Embodiment 3

[0014] Example 3 100g of phenolic resin, 3.0g of surfactant, 8.0g of foaming agent, 12.0g of curing agent, and 40.0g of closed-cell perlite with a particle size of 1.5mm was added to it, heated and foamed at 50°C for 30min, and solidified Forming to obtain a substrate layer of 8 cm, the curing temperature is 50 ° C, and the curing time is 30 minutes. According to the ratio of 7:3:3:1, magnesium oxide, magnesium chloride hexahydrate, water and 100 mesh rice husk powder are evenly mixed to obtain inorganic materials. Mixture: Coat 1.5mm of inorganic material mixture on both sides of the substrate layer, then cover both sides with wooden formwork, and then cure at room temperature for 50 minutes to obtain a flame-retardant thermal insulation profile.

[0015] The performance of the flame-retardant insulation material prepared by embodiment 1-3 is shown in the following table 1

[0016] Table 1

[0017]

[0018] According to the index of IS04896-84 phenolic foam international ...

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Abstract

The invention discloses a flame-retardant thermal insulation material and a preparation method thereof. The flame-retardant thermal insulation material consists of a base material layer and inorganic material layers on both surfaces of the base material layer, wherein the base material layer comprises phenolic resin, closed cell perlite, a surfactant, a foaming agent and a curing agent; and both surfaces of the base material layer are provided with the inorganic material layers with the thickness of between 0.5 and 1.5mm respectively. The preparation method comprises the following steps of: mixing and stirring the phenolic resin with all the additives; mixing with the closed cell perlite; warming, foaming and curing the mixture in a mold; and compounding inorganic materials on both surfaces of a phenolic board. The flame-retardant thermal insulation material has the advantages of light weight, high strength, low thermal conductivity, high flame retardance and thermal insulation property and low cost, wherein the thermal conductivity reaches 0.030 W / m.K; the oxygen index reaches 49.5; and the flame-retardant thermal insulation material belongs to a level A flame-retardant thermal insulation material. The cost is reduced by 30 to 40 percent compared with that of phenolic foam boards without the closed cell perlite.

Description

technical field [0001] The invention relates to a flame-retardant thermal insulation material and a preparation method thereof, belonging to the field of polymer materials and building materials. Background technique [0002] With the rapid development of the construction industry, thermal insulation materials have been widely used. At present, the most commonly used organic thermal insulation materials are extruded polystyrene (XPS), expandable expanded polystyrene (EPS) and rigid polyurethane foam (PU), etc. The thermal effect is very good, but they are easy to burn and have poor fireproof performance. Once they encounter fire, they will burn rapidly and drip and melt. hazards, resulting in huge losses. In recent years, fires caused by the use of non-flame-retardant thermal insulation materials (such as EPS, etc.) have occurred from time to time. The foamed phenolic resin material belongs to the polymer organic rigid foam product. It is foamed from thermosetting phenoli...

Claims

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Application Information

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IPC IPC(8): B32B27/06B32B27/42B32B27/18C08L61/06C08K7/26C08J9/00
Inventor 张龙李从号王仲举崔瑛娜
Owner CHANGCHUN UNIV OF TECH
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