CN102617101B - Method for preparing heat insulation board for exterior walls - Google Patents
Method for preparing heat insulation board for exterior walls Download PDFInfo
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- CN102617101B CN102617101B CN 201210078462 CN201210078462A CN102617101B CN 102617101 B CN102617101 B CN 102617101B CN 201210078462 CN201210078462 CN 201210078462 CN 201210078462 A CN201210078462 A CN 201210078462A CN 102617101 B CN102617101 B CN 102617101B
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Abstract
The invention discloses a method for preparing a heat insulation board for exterior walls, which includes: A, preparation of modified heat insulating particles, namely firstly, weighing heat insulating particles, immersing the heat insulating particles into hydrofluoric acid solution, and filtering out; secondly, immersing the filtered-out materials into sodium dodecyl sulfate solution, and then filtering out; thirdly, mixing aerogel with aluminum silicate micro powder and grinding the mixture; fourthly, blending the mixed powder at the step three into the filtered-out materials at the step two until the surfaces of the filtered-out materials are completely wrapped by the mixed powder; and fifthly, drying to obtain the modified heat insulating particles; and B, extrusion molding of a heatinsulating board material, namely mixing adhesives with the modified heat insulating particle, adding waterproof agent for kneading, extrusion molding and drying to obtain the heat insulating board material.
Description
Technical field
The invention belongs to the material of construction preparation field, be specifically related to the preparation method of the novel external wall thermal baffle of the heat insulation construction requirement of a kind of suitable building heat preservation.
Background technology
The heat-insulating material is organism mostly on the market, as polyurethane foam, foam polyphenyl particle, and the foaming phenolic aldehyde, though these organism are very light as the heat-insulating material, good heat-insulation effect, low price.But these materials all belong to combustible material, meet fire and namely fire, and are each because the fire that the heat-insulating material causes all belongs to painful wildfire, use this lagging material to allow people's lives and properties can not get ensureing.Handle yet do fire prevention on these organic lagging material bases, except phenolic board more effective, just much more difficult relatively for urethane cheap and easy to get, granular polystyrene.And existing inorganic materials is as lagging material on the market, and as rock wool, glass fibre cotton, pearlstone, cenosphere, foam cement, foamed glass and foaming plaster etc., its effect of heat insulation is difficult to reach requirement again.Aerosil belongs to the superinsulation material in the inorganic materials, but because it is expensive, practice is very unrealistic.
Summary of the invention
At problems of the prior art and deficiency, the object of the present invention is to provide a kind of preparation method of exterior wall thermal baffle, take cheaply that aerogel carries out modification to the organic foam material of low cost, make the high-quality nonflammable modified building lagging material of a kind of low cost.
The objective of the invention is to realize by following technical proposals:
A kind of preparation method of exterior wall thermal baffle material, this method comprises the steps:
The preparation of A, modification insulation particle
1) taking by weighing insulation particle, is 2: 1 ratio according to insulation particle and hydrofluoric acid solution mass ratio, and insulation particle is immersed in the hydrofluoric acid solution 1-2 hour, leaches;
2) according to insulation particle and sodium dodecyl sulfate solution mass ratio be 2: 1 ratio again, will leach thing and be immersed in the sodium dodecyl sulfate solution 1-2 hour, leach;
3) according to aerosil: pure aluminium silicate micro mist mass ratio was 1: 8 ratio, with aerogel and pure aluminium silicate micro mist mixed grinding 10 minutes;
4) mixed powder with step 3) is incorporated into step 2) leach in the thing, mix, wrap fully up to mixed powder and leach the thing surface;
5) with the step 4) material in 60-80 ℃, oven dry in 1-3 hour obtains the insulation particle of modification;
The extrusion moulding of B, thermal baffle material
Taking tackiness agent and modification insulation particle mass ratio is the mixed of 1: 2 or 2: 3, and adds 20 gram water-resisting agents and mediate, extrusion moulding, and 50-90 ℃ dry down, namely get exterior wall thermal baffle material.
Further aspect of the present invention is:
Described insulation particle is granular polystyrene or polyurathamc particle.
The mass percentage concentration of described hydrofluoric acid solution is 1%.
Described water-resisting agent is methyl siliconic acid potassium.
Described tackiness agent is one or more in water glass, silicon sol, gypsum, benzene emulsion, formaldehyde polyvinyl acetal water or the cement.
Described aerosil prepares according to following method:
1) being that 1: 1 ratio is mixed in container with silicon sol and tetraethoxy in mass ratio earlier, is 10: 1 ratio again according to ethanol and aforementioned mixture quality ratio, and ethanol is joined in the aforementioned mixture, obtains mixing solutions;
2) be 5: 1 mixed according to the ammoniacal liquor mass ratio of water and 30% after, this ammonia soln is slowly joined in the aforementioned mixing solutions in the stirring, stir, regulator solution pH value is 7;
3) with step 2) solution left standstill that obtains 1 hour is to clear, with gels to be aging such as container closure 4 hours;
4) gel after will wearing out moves in the drying plant, in 290 ℃, under the 22MPa-23.5MPa condition dry 10-15 hour, both aerosil.
The exterior wall heat insualting building panel material for building of the present invention's preparation, critical material are to use the superinsulation aerosil of our company oneself production as the main additive of modification lagging material.The present invention is by the preparation with the novel building insulation particle; stick with glue agent (comprise water glass, silicon sol, gypsum, emulsion, formaldehyde polyvinyl acetal water, cement one or more) then the novel building insulation particle is mixed bonding extrusion moulding, dry finished product under 50-90 degree condition.
Use the exterior wall thermal baffle intensity of manufacturing of the present invention can reach 0.1-0.25MPa, thermal conductivity (normal temperature) is at 0.028-0.035w/m.k, and it is fire-retardant that the burning grade can reach the A level.
Embodiment
Bottom is illustrated the novel building lagging material in conjunction with the embodiments.
Embodiment 1 modified polyphenyl particle thermal baffle for buildings
The preparation of A, modification insulation particle
At first, preparation aerosil:
Be that 1: 1 ratio is mixed with silicon sol and tetraethoxy in mass ratio earlier, 100 liters of ethanol joined in 10 liters of mixtures that fully stirring obtains mixing solutions in container; To slowly join in the aforementioned mixing solutions in the stirring with 5 kilograms of water-reducible ammoniacal liquor of 1 kilogram 30%, and stir, regulator solution pH value is 7; Add the back and continue to stir up to whole solution clear (about one hour), container closure is waited for gel (about 4 hours).The gel of getting well wearing out is transferred to and is removed to carry out supercritical drying in the supercritical drying equipment, and its drying conditions is: 290 ℃ of temperature; Press 23.5MPa (dry about 10 hours), get aerosil.
Then, preparation modification insulation particle:
Take by weighing 300g granular polystyrene (pushing up U.S. lagging material company limited available from Xi'an) and in 150 liters of dilute hydrofluoric acid solutions of 1%, soaked 2 hours, leach; Soak for 150 liters with sodium dodecyl sulfate solution again and leached in 2 hours; With 150 gram aerosils, 1200 gram pure aluminium silicate micro mist mixed grindings 10 minutes, mixed powder is incorporated in the granular polystyrene of handling through two procedures, mix, wrap the granular polystyrene surface fully up to mixed powder, in 60 ℃, oven dry in 3 hours namely gets the polyphenyl insulation particle of modification.
The extrusion moulding of B, thermal baffle material
Get modified polyphenyl insulation particle 300 grams, mass ratio is 1: 1: 1 silicon sol, polyvinylformal glue, the benzene emulsion 200g that mix, and water-resisting agent methyl siliconic acid potassium 20g mediates, extrusion moulding, and dry under 90 ℃, namely get exterior wall thermal baffle material.Make 300 * 300 thermal baffle again, The performance test results is: 110 kilograms/cubic metre of density, thermal conductivity 0.030w/m.k, belong to A level fire retardant material.
Embodiment 2 modified polyurethane thermal baffle for buildings
The preparation of A, modification insulation particle
At first, preparation aerosil:
Be that 1: 1 ratio is mixed with silicon sol and tetraethoxy in mass ratio earlier, 100 liters of ethanol joined in 10 liters of mixtures that fully stirring obtains mixing solutions in container; To slowly join in the aforementioned mixing solutions in the stirring with 5 kilograms of water-reducible ammoniacal liquor of 1 kilogram 30%, and stir, regulator solution pH value is 7; Add the back and continue to stir up to whole solution clear (about one hour), container closure is waited for gel (about 4 hours).The gel of getting well wearing out is transferred to and is removed to carry out supercritical drying in the supercritical drying equipment, and its drying conditions is: 290 ℃ of temperature; Pressure 22MPa (dry about 15 hours) gets aerosil.
Then, preparation modification insulation particle:
Take by weighing in 50 liters of the dilute hydrofluoric acid solution of 100g insulation particle (polyurethane particles that foams certainly, 46 kilograms/cubic metre of density, thermal conductivity 0.022w/m.k) 1% and soaked 1 hour, leach; Soak for 50 liters with sodium dodecyl sulfate solution again and leached in 1 hour; With 50 gram aerosils, 400 pure aluminium silicate micro mist mixed grindings 10 minutes, mixed powder is incorporated in the polyurathamc particle of handling through two procedures, mix, wrap the polyurathamc particle surface fully up to mixed powder, 80 ℃, oven dry in 1 hour namely gets the urethane insulation particle of modification.
The extrusion moulding of B, thermal baffle material
Get urethane insulation particle 400 grams of modification, mass ratio adds water glass, polyvinylformal glue, benzene emulsion 200g at 1: 1: 1, and water-resisting agent methyl siliconic acid potassium 20g mediates, extrusion moulding, and dry under 50 ℃, namely get exterior wall thermal baffle material.Make 300 * 300 thermal baffle again, The performance test results is: 150 kilograms/cubic metre of density, thermal conductivity 0.027w/m.k, belong to A level fire retardant material.
Can also take gypsum or cement to mediate in water-resisting agent as tackiness agent among the above-mentioned steps B, extrusion moulding makes exterior wall thermal baffle material.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (1)
1. the preparation method of an exterior wall thermal baffle is characterized in that, this method comprises the steps:
The preparation of A, modification insulation particle
1) taking by weighing insulation particle, is the ratio of 2:1 according to insulation particle and hydrofluoric acid solution mass ratio, and insulation particle is immersed in the hydrofluoric acid solution 1-2 hour, leaches;
2) be the ratio of 2:1 according to insulation particle and sodium dodecyl sulfate solution mass ratio again, will leach thing and be immersed in the sodium dodecyl sulfate solution 1-2 hour, leach;
3) according to aerosil: pure aluminium silicate micro mist mass ratio was the ratio of 1:8, with aerogel and pure aluminium silicate micro mist mixed grinding 10 minutes;
4) mixed powder with step 3) is incorporated into step 2) leach in the thing, mix, wrap fully up to mixed powder and leach the thing surface;
5) with the step 4) material in 60-80 ℃, oven dry in 1-3 hour obtains the insulation particle of modification;
The extrusion moulding of B, thermal baffle material
Taking tackiness agent and modification insulation particle mass ratio is the mixed of 1:2 or 2:3, and adds 20 gram water-resisting agents and mediate, extrusion moulding, and 50-90 ℃ down dry, namely get exterior wall thermal baffle material;
Described insulation particle is granular polystyrene or polyurathamc particle;
The mass percentage concentration of described hydrofluoric acid solution is 1%;
Described water-resisting agent is methyl siliconic acid potassium;
Described tackiness agent is one or more in water glass, silicon sol, gypsum, benzene emulsion, formaldehyde polyvinyl acetal water or the cement;
Described aerosil prepares according to following method:
1) be that the ratio of 1:1 is mixed in container with silicon sol and tetraethoxy in mass ratio earlier, again according to ethanol and aforementioned mixture quality than being the ratio of 10:1, ethanol is joined in the aforementioned mixture, obtain mixing solutions;
2) be the mixed of 5:1 according to the ammoniacal liquor mass ratio of water and 30% after, this ammonia soln is slowly joined in the aforementioned mixing solutions in the stirring, stir, regulator solution pH value is 7;
3) with step 2) solution left standstill that obtains 1 hour is to clear, with gels to be aging such as container closure 4 hours;
4) gel after will wearing out moves in the drying plant, in 290 ℃, under the 22MPa-23.5MPa condition dry 10-15 hour, namely gets aerosil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210078462 CN102617101B (en) | 2012-03-22 | 2012-03-22 | Method for preparing heat insulation board for exterior walls |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210078462 CN102617101B (en) | 2012-03-22 | 2012-03-22 | Method for preparing heat insulation board for exterior walls |
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| CN102617101B true CN102617101B (en) | 2013-09-04 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976783A (en) * | 2012-11-13 | 2013-03-20 | 王国英 | Compound heat preservation plate |
| CN103408279A (en) * | 2013-07-26 | 2013-11-27 | 成都新柯力化工科技有限公司 | Thermal insulation aerogel material for buildings, and preparation method of aerogel material |
| CN106242423A (en) * | 2016-07-20 | 2016-12-21 | 长沙怡景建材科技有限公司 | A kind of high-performance compound insulating material based on polyurethane |
| CN107383793B (en) * | 2017-07-25 | 2020-06-02 | 攀枝花学院 | Fireproof polyphenyl particle board and preparation method thereof |
| CN109467454A (en) * | 2017-09-08 | 2019-03-15 | 穆振奎 | A kind of compound A grades of fireproof and heat-insulating material of aerosil and its preparation process |
| CN114538824B (en) * | 2022-03-08 | 2022-11-01 | 浙江元通线缆制造有限公司 | Preparation method of aerogel heat insulation felt and aerogel flame-retardant heat insulation cable |
| CN115637061B (en) * | 2022-10-11 | 2024-05-07 | 航天特种材料及工艺技术研究所 | Preparation method of heat-insulating filler for high-performance heat-insulating coating |
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| CN1528701A (en) * | 2003-10-16 | 2004-09-15 | 尉卫祖 | Composite theremal-preserving heat-insulating material |
| CN1947981A (en) * | 2006-09-05 | 2007-04-18 | 张柏 | Method for mfg. cement thermal insulating slabs with surface coatins |
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