Foamed water glass expanded perlite thermal insulating board

A technology of expanded perlite and foamed water, which is applied in the field of foamed water glass expanded perlite insulation board and its preparation, can solve the problems of poor water resistance, low bonding strength and long curing time of pure water glass binder, Achieve the effects of good thermal insulation performance, low price and saving consumption

Active Publication Date: 2013-04-24
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pure water glass adhesive has defects such as poor water resistance, low bonding strength, and long curing time.
Therefore, its application is limited

Method used

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  • Foamed water glass expanded perlite thermal insulating board
  • Foamed water glass expanded perlite thermal insulating board
  • Foamed water glass expanded perlite thermal insulating board

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] The composition of the present example inorganic binder raw material is as follows:

[0018] Sodium water glass 33.95% Potassium silicate 39.30% Silica sol 7.32% Silicone waterproofing agent NYY 2.05% Vinyltriethoxysilane Aqueous solution of acetic acid (pH=5) 4.03% High aluminum powder 11.92% rosin 1.46%

[0019] The preparation process is as follows:

[0020] 1. Mix sodium water glass and potassium water glass in a water bath and heat at 80°C with a stirring speed of 1000 rpm, and stir for 15 minutes to heat and age for modification. Cool to room temperature and set aside.

[0021] 2. Add silica sol and stir for 5 minutes.

[0022] 3. Slowly add waterproofing agent and stabilizer, and stir for 25 minutes.

[0023] 4. Add high alumina powder and cement foaming agent, stir for 20 minutes, (step 2-4 water bath heating temperature is 50 ℃, and the speed is 1000 rpm);

[0024] 5. Pour out, mix and stir with expande...

example 2

[0027] Sodium water glass 45.95% Potassium silicate 23.30% Silica sol 5.32% Sodium methyl silicate 2.95% Vinyltriethoxysilane Acetic acid aqueous solution (pH=3.2) 4.95% High aluminum powder 14.72% Hydrogen peroxide foaming agent 2.56%

[0028] The preparation process is as follows:

[0029] 1. Sodium water glass and potassium water glass were mixed and stirred for 15 minutes for heating and aging modification. The whole preparation process was heated in a water bath at 80° C., and the stirring speed was 1000 rpm. Cool to room temperature and set aside.

[0030] 2. Heat and stir the modified water glass in a water bath, add silica sol, and stir for 5 minutes.

[0031] 3. Slowly add waterproofing agent and stabilizer, and stir for 25 minutes.

[0032] 4. Add high alumina and then drop hydrogen peroxide foaming agent, stir for 20 minutes, (step 2-4 water bath heating temperature is 60 ℃, and the speed is 1000 rpm)

[0033] 5...

example 3

[0037] Sodium water glass 49.95% Potassium silicate 20.30% Silica sol 9.32% Silicone Water Repellent 2.98% KH560 Oxalic Acid Aqueous Solution (pH=5) 2.03% talcum powder 14.72% rosin 1.46%

[0038] The preparation process is as follows:

[0039] 1. Mix sodium water glass and potassium water glass and stir for 15 minutes to heat and age for modification. Heat in a water bath to 65°C, and the stirring speed is 1000 rpm. Cool to room temperature and set aside.

[0040] 2. Heat the modified water glass in a water bath and stir; add silica sol and stir for 5 minutes.

[0041] 3. Slowly add waterproofing agent and stabilizer, and stir for 25 minutes.

[0042] 4. Add talcum powder and rosin foaming agent, stir for 20 minutes, (step 2-4 water bath heating temperature is 70 ℃, speed is 1200 rpm), then pour it out, mix with expanded perlite 0.83:1, Pressing.

[0043] 5. Put it in the oven, dry at 150°C for 2.5 hours and take it out....

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Abstract

The invention provides a foamed water glass expanded perlite thermal insulating board, which is formed by pressing and drying modified foamed water glass as an adhesive and expanded perlite as an aggregate, wherein the water glass adhesive comprises the following components: sodium water glass, potash water glass, silica sol, an additive, a waterproofing agent, a stabilizer and a foaming agent. The prepared thermal insulating board has the advantages of low price, wide application range, low density, good water resistance, high strength, good thermal insulating performance and the like. In addition, the prepared thermal insulating board is foamed, so that the material consumption is saved, i.e. the cost is lowered.

Description

technical field [0001] The invention belongs to inorganic thermal insulation materials, in particular to a foamed water glass expanded perlite thermal insulation board and a preparation method thereof. Background technique [0002] Thermal insulation materials play an important role in people's daily life and production. At present, most thermal insulation materials on the market are organic thermal insulation materials. However, organic thermal insulation materials will cause some environmental pollution problems during production and use, which are harmful to human health and the environment. cause great harm. Moreover, organic thermal insulation materials have poor high temperature resistance and are easy to burn, so they have poor fire resistance. These shortcomings limit the further application of organic insulation materials. Inorganic thermal insulation materials not only have excellent high temperature resistance, but also do not produce harmful substances to pollu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B38/02C04B38/10
Inventor 崔升唐祥龙刘宝沈晓冬
Owner NANJING TECH UNIV
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