A kind of anti-alkali returning type perlite insulation board and its manufacturing method
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A technology of perlite thermal insulation board and expanded perlite, which is applied in the field of thermal insulation materials, can solve the problems of decreased bonding ability of boards, occurrence of accidents, affecting the appearance of cities, etc., and achieves the effects of improving appearance, avoiding accidents and reasonable design.
Inactive Publication Date: 2018-05-04
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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Problems solved by technology
It not only affects the appearance of the city, but also, due to the precipitation of the adhesive, the bonding ability of the board is reduced, and the board will be damaged, resulting in peeling and accidents.
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Embodiment 1
[0027] A perlite thermal insulation board for suppressing back to alkali is made of the following raw materials in parts by weight: expanded perlite 200-250, water glass 80-150, water repellent 5-20, inhibitor 5-30, water 15-50 and Adhesive 8~40.
[0028] The manufacture method of described anti-alkali reversion type perlite insulation board comprises the steps:
[0029] (1) Weigh the water glass, water-repellent agent and water according to the above formula, and stir evenly to obtain the mixed solution a;
[0030] (2) Add the mixed liquid a obtained in step (1) to the expanded perlite of the formula to obtain the mixed material b;
[0031] (3) Pour the mixed material b in step (2) into a mold, press and form it to obtain a substrate wet body, and then microwave dry it to a constant weight at 80-110°C to obtain a substrate;
[0032] (4) First weigh the formula amount of inhibitor and adhesive and mix them evenly to obtain mixture c, then spray the surface of the substrate p...
Embodiment 2
[0039] A perlite insulation board for inhibiting reversion is made of the following raw materials in parts by weight: expanded perlite 220, water glass 120, water-repellent agent 10, diatomite 15, water 30 and acrylic emulsion 25.
[0040] The preparation method of this embodiment is the same as that of Example 1.
Embodiment 3
[0042] A perlite insulation board for inhibiting reversion is made of the following raw materials in parts by weight: 200 parts by weight of expanded perlite, 150 parts by water glass, 5 parts of water-repellent agent, 30 parts of talcum powder, 40 parts of water and 30 parts of acrylic acid emulsion.
[0043] The preparation method of this embodiment is the same as that of Example 1.
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Abstract
The invention relates to an alkali efflorescence inhibition perlite heat insulation plate and a making method thereof. The alkali efflorescence inhibition perlite heat insulation plate is made from the following raw materials: expanded perlite, water glass, a water repellent, an inhibitor, water and an adhesive. The method comprises the following steps: weighing the water glass, the water repellent and water, uniformly mixing the water glass, the water repellent and water, adding the obtained mixture to the expanded perlite, stirring obtained materials until uniformity, pouring the obtained mixture into a die, carrying out compaction molding to make a substrate wet blank, and carrying out microwave drying until constant weight in order to obtain a substrate; and mixing the inhibitor with the adhesive in advance until uniformity to obtain a mixture, spraying water to the surface of the substrate, and uniformly smearing the surface of the pretreated substrate with the mixture. The alkali efflorescence inhibition perlite heat insulation plate made in the invention solves the problem of alkali efflorescence of the surface of perlite heat insulation plates adopting the water glass as an adhesive without increasing the cost, improves the weatherability of the perlite heat insulation plates, improves the beauty of buildings in cities, and avoids accidents caused by spalling of external heat insulation layers of exterior walls.
Description
technical field [0001] The invention belongs to the technical field of thermal insulation materials, and in particular relates to a type of anti-alkali-returning perlite thermal insulation board and a manufacturing method thereof. Background technique [0002] Perlite insulation board is made of hydrophobic expanded perlite bulk material, which is made by screening expanded perlite, adding waterproofing agent and binder for preparation, pressure molding, drying and other processes. Thermal waterproof insulation board. The characteristics of perlite insulation board with water glass as adhesive: low cost, strong cohesive force and high strength, but after being exposed to wind, sun and rain, the salt ions in water glass will be separated from the insulation board after a period of time , A layer of white matter appears on the surface of the wall, which is the so-called back-alkali phenomenon. Not only does it affect the appearance of the city, but also, due to the precipita...
Claims
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Application Information
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