Waterproof closed-cell expanded perlite

Abstract

The invention provides a waterproof closed-cell expanded perlite which is prepared by the following steps of: matching silica sol, water glass, a waterproof agent, cement powder, a curing agent and water in parts by weight, and uniformly mixing to prepare a waterproof closed-cell sizing agent; then uniformly spraying the waterproof closed-cell sizing agent to the surface of an expanded perlite, and then drying or airing the expanded perlite to obtain the waterproof closed-cell expanded perlite, wherein 215.1-262.9 kilograms of the waterproof closed-cell sizing agent is sprayed to the expanded perlite per cubic metre. The waterproof closed-cell expanded perlite has the outstanding advantages of light capacity, good heat insulation property, waterproofness, good affinity, high compression strength, extensive usage temperature, high chemical stability, innocuity, odourless, incorruption and non-inflammation, acid-alkali resistance, simple preparation process and low cost, thereby being an ideal building heat insulation material.

Description

technical field

[0001] The invention relates to a building thermal insulation material, in particular to a waterproof closed-cell expanded perlite. Background technique

[0002] Ordinary expanded perlite has excellent thermal insulation, filtration and adsorption properties, non-toxic, odorless, non-corrosion, non-combustible, acid-resistant, alkali-resistant, light bulk density, sound-absorbing, stable chemical properties, it is widely used in petroleum, chemical, electric power, metallurgy and Construction and other fields; the fly in the ointment is that the mass water absorption rate of ordinary expanded perlite is as high as 400%, and the volume water absorption rate is as high as 30%.

[0003] In response to the above shortcomings, people have been working hard to improve it. Among them, the strength, waterproof rate and closed porosity of the expanded perlite treated by shelling can be greatly improved, but its thermal conductivity is thus increased, resulting in its ...

Examples

Embodiment 1

[0014] A kind of waterproof closed-cell expanded perlite, specifically: firstly, by weight, silica sol, water glass, waterproofing agent, cement powder, curing agent and water are proportioned, and mixed uniformly to obtain a waterproof closed-cell liquid Slurry, specifically, the weight ratio of silica sol, water glass, waterproofing agent, cement powder, curing agent and water is 50:250:5:80:5:2000, and the silica sol, water Glass, waterproofing agent, cement powder, curing agent and water are placed in the mixer and fully stirred, the stirring speed is 300-450 rpm, and the stirring time is 3-10 minutes; secondly, the waterproof closed-cell liquid slurry is evenly sprayed on the On the surface of expanded perlite, specifically, the expanded perlite is placed in a rotating drum, wherein the rotating speed of the drum is 20-80 rpm, and then the prepared waterproof closed-cell liquid slurry is sprayed by a shotcrete machine. Spray on the surface of the expanded perlite to form ...

Embodiment 2

[0017] The difference between the present embodiment and the first embodiment mainly lies in: a waterproof closed-cell expanded perlite, specifically, the weight ratio of the silica sol, water glass, waterproofing agent, cement powder, curing agent and water is 45:230 : 4.5: 75: 4.5: 1800; Spray 2159 kilograms of said waterproof closed-cell liquid slurry on every cubic meter of expanded perlite.

Embodiment 3

[0019] The difference between the present embodiment and the first embodiment mainly lies in: a waterproof closed-cell expanded perlite, specifically, the weight ratio of the silica sol, water glass, waterproofing agent, cement powder, curing agent and water is 55:270 : 5.5: 85: 5.5: 2100; Spray 2521 kilograms of the waterproof closed-cell liquid slurry on every cubic meter of expanded perlite.

technical field

[0001] The invention relates to a building thermal insulation material, in particular to a waterproof closed-cell expanded perlite. Background technique

[0002] Ordinary expanded perlite has excellent thermal insulation, filtration and adsorption properties, non-toxic, odorless, non-corrosion, non-combustible, acid-resistant, alkali-resistant, light bulk density, sound-absorbing, stable chemical properties, it is widely used in petroleum, chemical, electric power, metallurgy and Construction and other fields; the fly in the ointment is that the mass water absorption rate of ordinary expanded perlite is as high as 400%, and the volume water absorption rate is as high as 30%.

[0003] In response to the above shortcomings, people have been working hard to improve it. Among them, the strength, waterproof rate and closed porosity of the expanded perlite treated by shelling can be greatly improved, but its thermal conductivity is thus increased, resulting in its ...

Examples

Embodiment 1

[0014] A kind of waterproof closed-cell expanded perlite, specifically: firstly, by weight, silica sol, water glass, waterproofing agent, cement powder, curing agent and water are proportioned, and mixed uniformly to obtain a waterproof closed-cell liquid Slurry, specifically, the weight ratio of silica sol, water glass, waterproofing agent, cement powder, curing agent and water is 50:250:5:80:5:2000, and the silica sol, water Glass, waterproofing agent, cement powder, curing agent and water are placed in the mixer and fully stirred, the stirring speed is 300-450 rpm, and the stirring time is 3-10 minutes; secondly, the waterproof closed-cell liquid slurry is evenly sprayed on the On the surface of expanded perlite, specifically, the expanded perlite is placed in a rotating drum, wherein the rotating speed of the drum is 20-80 rpm, and then the prepared waterproof closed-cell liquid slurry is sprayed by a shotcrete machine. Spray on the surface of the expanded perlite to form ...

Embodiment 2

[0017] The difference between the present embodiment and the first embodiment mainly lies in: a waterproof closed-cell expanded perlite, specifically, the weight ratio of the silica sol, water glass, waterproofing agent, cement powder, curing agent and water is 45:230 : 4.5: 75: 4.5: 1800; Spray 2159 kilograms of said waterproof closed-cell liquid slurry on every cubic meter of expanded perlite.

Embodiment 3

[0019] The difference between the present embodiment and the first embodiment mainly lies in: a waterproof closed-cell expanded perlite, specifically, the weight ratio of the silica sol, water glass, waterproofing agent, cement powder, curing agent and water is 55:270 : 5.5: 85: 5.5: 2100; Spray 2521 kilograms of the waterproof closed-cell liquid slurry on every cubic meter of expanded perlite.