Composite flame-retardant heat-insulation material for exterior walls and method for preparing composite flame-retardant heat-insulation material

A technology of composite flame retardant and thermal insulation materials, applied in the field of building materials, can solve the problems of questioning the fire performance of organic thermal insulation materials, restricting the application of urea-formaldehyde resin, poor water resistance, etc.

Inactive Publication Date: 2019-03-08
四川雷恩新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the successive building fire incidents in recent years, the fire performance of organic thermal insulation materials has been questioned.
[0003] At present, urea-formaldehyde resin is difficult to burn, but its price is low, so that its application range is gradually expanded, but urea-formaldehyde resin has disadvantages such as poor water resistance, high brittleness, and release of formaldehyde when curing, especially the above problems are obvious in pure urea-formaldehyde resin foaming materials. , limiting the application of urea-formaldehyde resin

Method used

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  • Composite flame-retardant heat-insulation material for exterior walls and method for preparing composite flame-retardant heat-insulation material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The present embodiment provides a composite flame-retardant thermal insulation material for exterior walls, and the specific manufacturing steps are as follows:

[0024] 1. Preparation of urea-formaldehyde resin, including the following steps:

[0025] (1) Dissolving of polyvinyl alcohol: Add 100 parts of formaldehyde and 0.1 part of polyvinyl alcohol PVA in turn to the three-necked flask equipped with an electric stirring device, a reflux condensing device and a temperature measuring device until the polyvinyl alcohol PVA is completely dissolved.

[0026] (2) Weighing urea: Weighing 0.65 part of urea, the urea that will be weighed will be divided into 3 parts, respectively accounting for 60% of the total amount of urea or 0.39 part, 30% or 0.195 part of urea and 10% or 0.065 part of urea .

[0027] (3) Add urea: turn on the stirring device, adjust the stirring speed to be 100r / min, add 0.39 part of urea while stirring, adjust the pH value to 7.0 after the urea is comp...

Embodiment 2

[0033] The present embodiment provides a composite flame-retardant thermal insulation material for exterior walls, and the specific manufacturing steps are as follows:

[0034] 1. Preparation of urea-formaldehyde resin, including the following steps:

[0035] (1) Dissolving of polyvinyl alcohol: Add 100 parts of formaldehyde and 1.5 parts of polyvinyl alcohol PVA successively to the three-necked flask equipped with an electric stirring device, a reflux condensing device and a temperature measuring device, until the polyvinyl alcohol PVA is completely dissolved.

[0036] (2) take urea by weighing: take 0.8 part of urea, divide the urea that will be weighed into 3 parts, respectively account for 60% of the total amount of urea, namely 0.48 part of urea, 30% or 0.24 part of urea and 10% or 0.08 part of urea urea.

[0037] (3) Add urea: open the stirring device, adjust the stirring speed to 100r / min, add 0.48 part of urea while stirring, adjust the pH value to 7.0 after the urea ...

Embodiment 3

[0043] The present embodiment provides a composite flame-retardant thermal insulation material for exterior walls, and the specific manufacturing steps are as follows:

[0044] 1. Preparation of urea-formaldehyde resin, including the following steps:

[0045] (1) Dissolving of polyvinyl alcohol: Add 100 parts of formaldehyde and 3 parts of polyvinyl alcohol PVA successively to the three-necked flask equipped with an electric stirring device, a reflux condensing device and a temperature measuring device until the polyvinyl alcohol PVA is completely dissolved.

[0046] (2) Weighing urea: Weighing 0.95 part of urea, the urea that will be weighed will be divided into 3 parts, respectively accounting for 60% of the total amount of urea or 0.57 part of urea, 30% or 0.285 part of urea and 10% or 0.095 part of urea urea.

[0047] (3) Add urea: turn on the stirring device, adjust the stirring speed to 100r / min, add 0.57 part of urea while stirring, adjust the pH value to 8.0 after the...

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Abstract

The invention discloses a composite flame-retardant heat-insulation material for exterior walls, and relates to the technical field of building materials. A method for preparing the composite flame-retardant heat-insulation material includes raw material mixing: acquiring 100 parts of urea-formaldehyde resin, 130 parts of foam glass, 0.8-1.3 parts of n-pentane and 0.35-0.50 part of emulsifiers OP-10, then preliminarily uniformly mixing the urea-formaldehyde resin, the foam glass, the n-pentane and the emulsifiers OP-10 with one another, then adding 0.5 part of curing agents into the urea-formaldehyde resin, the foam glass, the n-pentane and the emulsifiers OP-10 and uniformly stirring the curing agents, the urea-formaldehyde resin, the foam glass, the n-pentane and the emulsifiers OP-10; casting mold feeding: pouring uniformly stirred raw materials into molds; curing: placing the molds with the poured raw materials in constant-temperature tanks at the set temperatures of 50 DEG C, curing the raw materials for 30 min and then taking the prepared composite flame-retardant heat-insulation material for the exterior walls out of the molds. The composite flame-retardant heat-insulation material has the advantages that good flame-retardant and heat conduction effects can be realized by the composite flame-retardant heat-insulation material, waste resources can be sufficiently utilized, and the composite flame-retardant heat-insulation material is economical and environmentally friendly and is low in cost and easy to manufacture.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a composite flame-retardant thermal insulation material for exterior walls and a preparation method thereof. Background technique [0002] At present, the commonly used external wall energy-saving insulation materials in my country can be divided into three types: inorganic materials, organic materials and composite materials. Inorganic thermal insulation materials are fire-resistant, flame-retardant, non-toxic, and safe, but have relatively high thermal conductivity; organic thermal insulation materials have low thermal conductivity, light weight, and hydrophobicity, but poor fire performance; composite thermal insulation Materials can combine the advantages of organic and inorganic materials. However, due to the successive building fire incidents in recent years, the fire performance of organic thermal insulation materials has been questioned. [0003] At present, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/24C08K7/24C08J9/14
CPCC08J9/141C08J2203/14C08J2361/24C08K7/24
Inventor 邱勇
Owner 四川雷恩新材料有限公司
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