CN105272098A - Composite inorganic hydrous salt phase-change material and preparation method of inorganic composite phase-change plate - Google Patents
Composite inorganic hydrous salt phase-change material and preparation method of inorganic composite phase-change plate Download PDFInfo
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Abstract
The invention relates to the field of composite building and ornament materials, in particular to a composite inorganic hydrous salt phase-change material and a preparation method of an inorganic composite phase-change plate. The preparation method comprises the steps that the pre-configured composite inorganic hydrous salt phase-change material raw materials comprising 100 parts of magnesia powder, 10-30 parts of clay powder, 15-25 parts of slag powder, 6-25 parts of Al2O3 padding, 45-60 parts of composite sulfate, 10-32 parts of wood flour, 0.5-1 part of composite phosphate, 5-7 parts of perlite, 75-85 parts of water and 0.2-1 part of citric acid are provided; the raw materials are mixed and evenly stirred into mixed slurry; the mixed slurry is compounded with glass fiber cloth to form an inorganic composite heat accumulation panel. The inorganic composite phase-change plate has the advantages of being low in weight and high in strength, saving energy, preserving moisture, resisting water, being good in toughness, absorbing sound, being environmentally friendly and high in ornamental performance and the like, meanwhile, has the high energy storage density and low degree of supercooling, is free of layering and good in stability, has impermeability, and does not corrode metal.
Description
Technical field
The present invention relates to composite decorative building material field, refer more particularly to the preparation method of a kind of composite inorganic hydrous salt phase change material and inorganic compounding phase change plate.
Background technology
At present, a big chunk of social energy wastage in bulk or weight is used for building field.And 70% be wherein that heating and air-conditioning consumed, along with the anxiety of the energy, Nonrenewable resources, utilization of new energy resources and improve the demand of plant efficiency, finds suitable passive type energy saving building material, reaches few use or the object without equipment.The building and ornament materials of present extensive application are as Side fascia, and lining, floor, furred ceiling, pyrogenicity (cold) equipment, as air-conditioning, floor heating, ground source heat, boiler hot hydrophone etc., all also exists the problem of different situations.
In architectural exterior-protecting construction, comfort level is mainly from five aspects, and temperature, humidity, sound absorption, Air quality and luminous environment, wherein luminous environment can be understood as the process of the ornamental visual sense of beauty that brings and light.People utilize the object of heating or air-conditioning to be for reaching temperature controlled effect.And if phase change material is used for building enclosure, will well play or increase this effect.Cold-storage aspect, cold-storage in the time that, air conditioner load low in electricity price is low, releases cold during, air conditioner load height high in electricity price, with this from the time all or local shift cooling load.In accumulation of heat, utilize the heat storage capacity of material of construction adjust indoor heat fluctuation, the fluctuating range of hot-fluid is weakened, and the time of effect is stepped back.By appropriate design, just can the undulated control of temperature in more comfortable scope.
Such as in interior wall, exterior wall and ceiling material territory, timber, stone material etc. are because of non-renewable, the reasons such as resistance to difference and radioactivity of preventing fires, in a large number for synthetic materials substitutes, the comparatively normal synthetic materials used has gypsum, cement, plasterboard or fibrous plaster, gypsum building materials poor water resistance, special easy efflorescence under moisture conditions, to go mouldy, do not reach desirable requirement.
Portland cement board unit weight is comparatively large, cannot for the manufacture of the less slim sheet material of thickness.Be utilize in wall body structure time, usually because it is poor to the adjustment of humidity, meet in use procedure condensation and dewfall thermal technology property decline, easily get damp, surface layer comes off.
Still have the existence of the organic volatiles such as free formaldehyde in common glued board, fiberboard, shaving board, have the factor of unfavorable health for upholstery, and fire-protection rating does not reach A level.Chloride magnesia cement board can accomplish lightweight, high-strength, slim, but poor toughness, easily return halogen, corrosion fastening piece.
Phase change material is incorporated in shaping building enclosure sheet material, just forms a kind of novel composite energy storage building material.Use phase change material to have the following advantages as energy storage material: one, phase transformation is carried out substantially at a constant temperature, and this characteristic is conducive to temperature variation to maintain in less scope, makes human body feel more comfortable; Its two, phase change material has very high storage density, and for the stable of temperature in room and air-conditioning system operating mode is steadily very favorable.
In phase-changing energy storage material, solid-liquid phase change energy storage material has value of exploiting and utilizing most, but there are the following problems for existing solid-liquid phase change energy storage material:
1, there is energy-storage property decline problem after phase layering and heating for multiple times refrigeration cycle in existing solid-liquid phase change material.
2, solid-liquid phase change material has liquid phase to produce in phase transformation, has certain mobility, therefore must have container splendid attire and container must seal with Leakage prevention; Particularly high-temperature fusion salt pair container has great corrosion, and inert containers must be selected to be encapsulated.These shortcomings have fettered the application of solid-liquid phase change material in actual production to a great extent.
3, solid-liquid phase change material generally always also existed cold problem in from liquid cooled to solid-state process, and causing can not timely crystallization in required temperature range.
Therefore, the direction becoming those skilled in the art and be devoted to study how is solved the problems of the technologies described above.
Summary of the invention
For prior art defect, the invention provides a kind of preparation method of inorganic compounding phase change plate, this invention technical scheme has that bending strength is large, unit weight is little, water-fast, good toughness, lightweight, the feature such as high-strength, waterproof, energy-conservation and moisturizing.
The present invention solves the problems of the technologies described above adopted technical scheme:
A kind of composite inorganic hydrous salt phase change material, wherein, be applied in building phase change material, the weight of described composite inorganic hydrous salt phase change material is: magnesia powder 100 parts, clay powder 10 ~ 30 parts, slag powders 15 ~ 25 parts, Al
2o
3filler 6 ~ 25 parts, complex vitriolate 45 ~ 60 parts, wood chip 10 ~ 32 parts, composite phosphate 0.5 ~ 1 part, perlite 5 ~ 7 parts, 75 ~ 85 parts, water.
Preferably, above-mentioned composite inorganic hydrous salt phase change material, wherein, the parts by weight of raw materials proportioning of described composite inorganic hydrous salt phase change material is: magnesia powder 100 parts, clay powder 10 parts, slag powders 15 parts, Al
2o
3filler 25 parts, complex vitriolate 50 parts, wood chip 30 parts, composite phosphate 1 part, perlite 5 parts, 75 parts, water.
Preferably, above-mentioned composite inorganic hydrous salt phase change material, wherein, described composite phosphate comprises any one or two or more combinations in monocalcium phosphate, tertiary sodium phosphate, tripoly phosphate sodium STPP and Sodium hexametaphosphate 99; Described complex vitriolate comprises any one or two or more combinations in calcium sulfate, Tai-Ace S 150, magnesium sulfate and ferrous sulfate.
Preferably, above-mentioned composite inorganic hydrous salt phase change material, wherein, described clay powder comprises any one or two or more combinations in laterite powder, loess powder, black earth powder, attapulgite clay, wilkinite; Described Al
2o
3filler comprises any one or two or more combinations in aluminium silicon ash, bauxitic clay, kaolin.
A preparation method for inorganic compounding phase change plate, wherein, be applied in building phase change material, described method comprises:
Step S1, provide the raw material of pre-configured composite inorganic hydrous salt phase change material, described parts by weight of raw materials proportioning is: magnesia powder 100 parts, clay powder 10 ~ 30 parts, slag powders 15 ~ 25 parts, Al
2o
3filler 6 ~ 25 parts, complex vitriolate 45 ~ 60 parts, wood chip 10 ~ 32 parts, composite phosphate 0.5 ~ 1 part, perlite 5 ~ 7 parts, 75 ~ 85 parts, water;
Step S2, the raw material of pre-configured composite inorganic hydrous salt phase change material to be mixed, carry out being stirred to evenly being made into mixed slurry;
Step S3, by described mixed slurry and glasscloth compound, make described inorganic compounding accumulation of heat panel;
Wherein, the processing condition of described stirring are as follows: temperature controls at 10 DEG C ~ 25 DEG C, churning time 12 ~ 18 minutes.
Preferably, the preparation method of above-mentioned inorganic compounding phase change plate, wherein, uses stream slurry rolling methods by described mixed slurry and glasscloth compound.
Preferably, the preparation method of above-mentioned inorganic compounding phase change plate, wherein, adopts the 80 ~ 140g/m of 2 layers ~ 6 layers
2glasscloth.
Preferably, the preparation method of above-mentioned inorganic compounding phase change plate, wherein, described inorganic compounding phase change plate is applied in upholstery.
Technical solution of the present invention tool has the following advantages or beneficial effect:
The invention discloses the preparation method of a kind of composite inorganic hydrous salt phase change material and inorganic compounding phase change plate, this invention technology has high-strength light, energy-saving humidity preservation, water-fast, good toughness, sound absorption, environmental protection and the ornamental feature such as by force, high energy storage density and little condensate depression simultaneously, without layering, there is good stability, halogenation, can not corroding metal.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, the present invention and feature, profile and advantage will become more apparent.Mark identical in whole accompanying drawing indicates identical part.Proportionally can not draw accompanying drawing, focus on purport of the present invention is shown.
Fig. 1 is preparation method's schematic flow sheet of inorganic compounding phase change plate of the present invention;
Fig. 2 is composite inorganic hydrous salt phase change material proportioning schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is further illustrated, but not as limiting to the invention.
Traditional scheme is suitable in the phase change material of upholstery, such as, has the existence of the organic volatiles such as free formaldehyde in common glued board, fiberboard, shaving board, has the factor of unfavorable health for upholstery, and fire-protection rating does not reach A level.Even if chloride magnesia cement board can accomplish lightweight, high-strength, slim, but poor toughness, easily return halogen, corrosion fastening piece.
Given this, the invention provides a kind of composite inorganic hydrous salt phase change material, it is mainly used in building phase change material, and the weight of composite inorganic hydrous salt phase change material is: magnesia powder 100 parts, clay powder 10 ~ 30 parts, slag powders 15 ~ 25 parts, Al
2o
3filler 6 ~ 25 parts, complex vitriolate 45 ~ 60 parts, wood chip 10 ~ 32 parts, composite phosphate 0.5 ~ 1 part, perlite 5 ~ 7 parts, 75 ~ 85 parts, water.
Based on above-mentioned composite inorganic hydrous salt phase change material, the present invention also provides a kind of high performance inorganic compounding phase change plate be applied in upholstery, and its preparation method, as shown in Figure 1, specifically comprises as follows:
Step S1, provide the raw material of pre-configured composite inorganic hydrous salt phase change material, described raw material parts by weight of raw materials proportioning is: magnesia powder 100 parts, clay powder 10 ~ 30 parts, slag powders 15 ~ 25 parts, Al
2o
3filler 6 ~ 25 parts, complex vitriolate 45 ~ 60 parts, wood chip 10 ~ 32 parts, composite phosphate 0.5 ~ 1 part, perlite 5 ~ 7 parts, 75 ~ 85 parts, water.Its proportioning is concrete as shown in Figure 2.
Phase change material be a class in the process itself undergone phase transition, can heat (cold) amount of absorbing environmental, and release heat (cold) amount to environment when needed, thus reach the material of object controlling ambient temperature.Wherein, composite inorganic hydration salt solid-liquid phase change energy storage material, can be divided into high temperature (being greater than 250 DEG C), middle temperature (100 ~ 250 DEG C) and low temperature (being less than 100 DEG C) phase change material by the scope of its transformation temperature.Under composite inorganic hydrous salt phase change material of the present invention occurs in normal temperature environment, belong to preferred temperature range in low-temperature phase-change material.
Optional but in nonrestrictive embodiment, preferably, the parts by weight of raw materials proportioning of composite inorganic hydrous salt phase change material is: magnesia powder 100 parts, clay powder 10 parts, slag powders 15 parts, Al one
2o
3filler 25 parts, complex vitriolate 50 parts, wood chip 30 parts, perlite 5 parts, 75 parts, water.
In an embodiment of the present invention, according to technique needs, composite inorganic hydrous salt phase change material of the present invention, also comprises the whipping agent that parts by weight are 0.1 ~ 1 part, preferably comprises the whipping agent that parts by weight are 0.6 part.
In composite inorganic hydrous salt phase change material of the present invention, composite phosphate comprises any one or two or more combinations in monocalcium phosphate, tertiary sodium phosphate, tripoly phosphate sodium STPP and Sodium hexametaphosphate 99 etc.Complex vitriolate comprises any one or two or more combinations in calcium sulfate, Tai-Ace S 150, magnesium sulfate and ferrous sulfate; Clay powder comprises any one or two or more combinations in laterite powder, loess powder, black earth powder, attapulgite clay, wilkinite; Al
2o
3filler comprises any one or two or more combinations in aluminium silicon ash, bauxitic clay, kaolin.
In composite inorganic hydrous salt phase change material of the present invention, described magnesia powder is by containing magnesiumcarbonate (MgCO
3) magnesite calcine out at 700 to 800 degrees Celsius there is certain active powdered material, can participate in gelling reaction, play the effect of other mixture gellings, this condenses for chemical reaction, produces pure inorganic structural, also referred to as light calcined magnesia.
Laterite powder of the present invention, is formed by laterite drying, grinding, and its fineness about 350 ~ 500 order, mainly comprises kaolinite, hydromuscovite, montmorillonite, quartz and feldspar.Laterite powder used in the present invention contains silicon-dioxide 65.18 ~ 71.86%, aluminium sesquioxide 15.02 ~ 17.99%, ferric oxide 3.27 ~ 6.61%, calcium oxide 0.75 ~ 1.68%, magnesium oxide 0.89 ~ 2.07%, loss on ignition 4.19 ~ 6.20%.It has excellent freeze-thaw resistance, sound absorption, weather resistance erosion resistance and sensible heat heat storage capacity etc.
Attapulgite clay of the present invention is a kind of crystalloid hydrous magnesium aluminium silicate mineral, has unique layer chain-like structure feature, has unique dispersion, high temperature resistant, anti-good colloidal property and the higher adsorption bleaching ability such as saline and alkaline.Surface-area can reach 9.6 ~ 36m
2/ g, unreactiveness, suppresses microorganism growth, absorbs poisonous volatile component etc.
Composite phosphate of the present invention and complex vitriolate are all properties-correcting agent, all play the effect of modification.Described modification refers to that different properties-correcting agent can make the microtexture of same material that the change of different purposes occurs, accelerate or slow down the speed of gelling reaction, single hydrated inorganic salt is phase-changed into be divided into the compound hydration inorganic salt of two-phase or three-phase, obtain suitable transition temperature range, eliminated cold, demixing phenomenon and guarantee long work-ing life, to adapt to the change of manufacturing environment.
Whipping agent used in the present invention comprises pneumatogen.For pneumatogen, foam pore is formed by the dissolving of the expansion of pressurized gas, the volatilization of liquid or solid.Described whipping agent is foamed into the form including uniform bubble through suitable foaming machine, low rate mixing is mixed in slurry, because its form possesses certain stability, form finer and close hole in the structure, favourable and be conducive to sheet material to be controlled to lower density to increasing the intensity of final material.The preferred pneumatogen of the present invention is Compositional type pneumatogen, comprise lower boiling alkane, fluorocarbon etc., it not only has the advantages such as foam expansion is high, froth stability good, bleeding quantity is low, certain modifying function can also be played to cement simultaneously, reduce the probability of product scumming.
Composite inorganic hydrous salt phase change material of the present invention is by gelling reaction, and produce the sheet material of the high strength of solidification or have arbitrarily the shape of intensity, its structure is microvoid structure, and its micropore size is 0.5 ~ 1 μm.
The concrete principle that described composite inorganic hydrous salt phase change material has microvoid structure is as follows:
MgO and complex vitriolate and water are at suitable proportioning and admixture (as phosphoric acid salt, citric acid, sucrose etc.), and admixture suppresses MgO water to form Mg (OH) in gelling reaction
2speed, make the more effective participation hydration reaction of complex vitriolate, formed Mg (OH)
2, Sulfates, H
2the crystallization phases of O ternary system, thus gain in strength, the compound hydrated inorganic salt structure of this solid phase has microvoid structure, the moisture content retained in micropore is along with the carrying out of hydration reaction, growing form is fibrous crystal, make micropore refinement more, the less fractional porosity in aperture is larger, and porosity makes greatly sheet material compaction strength high.Be full of the fibrous crystal in micropore, connect in net distribution, micro-pore diameter is 0.5 ~ 1 μm, and its whisker length is 20 ~ 80 μm, has better intensity and possesses toughness.
Composite inorganic hydrous salt phase change material of the present invention produces following technique effect:
1, the whisker (the hydrated inorganic salt of multiple compound) in micropore undergoes phase transition wherein, and solve the restriction of phase change material container and absolutely not demixing phenomenon, good stability, is not subject to the impact of external environment; Hydrated inorganic salt is good phase change material inherently, add suitable properties-correcting agent as composite phosphate, complex vitriolate etc., make it become the composite phase-change material of two-phase and three-phase, transformation temperature is between 26.4 DEG C to 87.5 DEG C, and its latent heat of phase change is at more than 200KJ/Kg.
2, in pyrogenicity, the thermal source supply initial stage, due to the compactness of its structure, and soil class height sensible heat filler is supplementary, make its specific heat capacity higher, at sensible heat heat accumulation stage excellent performance, simultaneously in material original about 7% natural moisture content evaporative process, also some sensible heat produces, and improves ambient moisture together with later stage latent heat production process (crystal water produces).
3, in refrigeration, low-temperature receiver supply, crystal water is got back in crystalline texture, material phase transformation release of heat (storing cold), and final stage absorbs the moisture content in portion of air.
Step S2, the raw material of pre-configured composite inorganic hydrous salt phase change material to be mixed, carry out being stirred to evenly being made into mixed slurry;
In this step, the raw material of composite inorganic hydrous salt phase change material is mixed, carry out being stirred to evenly being made into mixed slurry, when stirring, churning time is different according to slip characteristic, and control in 12 ~ 18 minutes, slip whipping temp controls at 10 DEG C ~ 25 DEG C.
Step S3, by mixed slurry and glasscloth compound, make inorganic compounding phase change plate;
The sheet material of the high strength of solidification can be produced because of composite inorganic hydrous salt phase change material of the present invention or have arbitrarily the shape of intensity, therefore stream slurry rolling methods can be used described mixed slurry and glasscloth compound, also can manual composite glass fiber cloth, be made into other products that is irregularly shaped or thickness.Wherein, the concrete steps of described stream slurry rolling methods are: when described mixed slurry is shaping, shaping roller spacing is adjusted to suitable distance, again mixed slurry suitable for thick dilution and glasscloth are thrown in the template to shaping roller, then feeding belt is opened, by the extruding by upper and lower roller of mixed slurry and glasscloth, the shaping inorganic compounding phase transformation sheet material becoming respective thickness.
Optional but in nonrestrictive embodiment, adopt the 80 ~ 140g/m of 2 layers ~ 6 layers one
2glasscloth, concrete, when the thickness of inorganic compounding phase change plate is 3mm ~ 12mm, adopt the 80 ~ 120g/m of 2 layers ~ 4 layers
2glasscloth, be preferably the 80 ~ 120g/m of 4 layers
2glasscloth; When the thickness of inorganic compounding accumulation of heat panel is 12mm ~ 18mm, adopt the 100 ~ 140g/m of 3 ~ 6 layers
2glasscloth; Be preferably the 100 ~ 140g/m of 4 layers
2glasscloth.
The present invention is further described below in conjunction with specific embodiment.
Embodiment 1:
A kind of inorganic compounding phase change plate, comprises the raw material of following parts by weight: magnesia powder 100 parts, 20 parts, laterite powder, attapulgite 5 parts, 10 parts, flyash, kaolin 10 parts, complex vitriolate 60 parts, wood chip 30 parts, citric acid 0.5 part, monocalcium phosphate 0.5 part, 75 parts, water, whipping agent 0.6 part.
The raw material (except whipping agent) of above-mentioned inorganic compounding phase change plate is mixed, then add water (ratio of weight and number of the parts by weight and magnesia powder that add water is 75:100) to carry out being stirred to evenly being made into mixed slurry, when stirring, churning time is different according to slip characteristic, control in 12 ~ 18 minutes, slip whipping temp controls more than 10 DEG C, less than 25 DEG C.Then with foaming machine, whipping agent is got stable foam, be mixed into slurry, and low speed stirs evenly, when described mixed slurry is shaping, shaping roller spacing is adjusted to suitable distance, then mixed slurry suitable for thick dilution and glasscloth are thrown in the template to shaping roller, then open feeding belt, by the extruding by upper and lower roller of mixed slurry and glasscloth, the shaping sheet material becoming respective thickness.
Obtained sheet material is put into curing room, under 30 DEG C ~ 40 DEG C conditions after the gelling demoulding, continues maintenance 3 ~ 5 days, keep humidity 60% ~ 70%.
According to the inorganic compounding phase transformation thickness of slab 2.8mm that embodiment 1 is obtained, density is 1.2g/cm
3dry state bending strength (detects by 7019-1997 " Test methods for fiber cement products ", reference standard GB25970-2010 " fireproof inorganic composition board ") 22.8mPa, hygrometric state bending strength 21.2mPa, bending strength coefficient of softening is 0.93 (i.e. 21.2/22.8), after soaked three months (standard gauge is decided to be 24 hours), bending resistance coefficient of softening is 0.90.
The inorganic compounding phase change plate obtained according to embodiment 1 has microvoid structure, and micropore size is 0.5 ~ 1 μm, is down to 1.2g/cm for making density
3left and right, after adding the whipping agent of stable foaming, coordinate the light filler such as wood chip, perlite, make panel density lower, but structure is closely knit, adding the properties-correcting agent such as citric acid makes timber intensity high, has good toughness, adds composite phosphate and vitriol and inorganic salt crystallization can be made to obtain the composite phase-change structure of two-phase, three-phase.
Embodiment 1, for inner wall decoration, meeting ornamental while, has certain regulating effect to room temp, thus decreases the number of starts of heating or conditioning unit, saves the part energy, regulates humidity to enhance comfort level, the 30m of same specification between two
2meeting room compare test, record power consumption and save 8%, humidity rangeability is little 5%, can substitute the materials such as timber, gypsum, ceramic tile, wallpaper.
Embodiment 2:
A kind of inorganic compounding phase change plate, comprises the raw material of following parts by weight: magnesia powder 100 parts, 20 parts, laterite powder, attapulgite 5 parts, 10 parts, flyash, bauxitic clay 10 parts, kaolin 5 parts, complex vitriolate 60 parts, wood chip 30 parts, citric acid 0.5 part, monocalcium phosphate 0.5 part, 80 parts, water, whipping agent 0.6 part.
According to the inorganic compounding phase transformation thickness of slab 9mm that embodiment 2 is obtained, density is 1.2g/cm
3, dry state bending strength 33.5mPa, hygrometric state bending strength 29.5mPa, coefficient of softening is 0.88, and after soaked three months, coefficient of softening is 0.87.
Embodiment 2 is used for indoor partition panel, the phase-change accumulation energy performance of its excellence, the power consumption of heating and conditioning unit is declined to a great extent, to humidity good control, ensure that indoor comfort degree, surperficial evaporated condensation water, having stopped bacterium, the growing of mould, is 225m at area
2office space do and cut off, average power consumption is 55% under equal conditions, and moisture stable is between 35 ~ 55%, and fire-protection rating is A level, and the fire-resistant timeliness test of 124mm model wall reaches 4 hours.
Embodiment 3:
A kind of inorganic compounding phase change plate, comprises the raw material of following parts by weight: magnesia powder 100 parts, slag powders 15 parts, attapulgite 10 parts, Al
2o
3filler 6 parts, complex vitriolate 45 parts, wood chip 25 parts, perlite 5 parts, citric acid 0.2 part, monocalcium phosphate 0.5 part, whipping agent 1 part.
According to the inorganic compounding phase transformation thickness of slab 6mm that embodiment 3 is obtained, density is 0.8g/cm
3, dry state bending strength 23.2mPa, hygrometric state bending strength 20.5mPa, coefficient of softening is 0.88.
Embodiment 3 is for indoor suspended ceiling, and it is at the successful of refrigeration in summer, winter heating insulation, equilibrium moisture, and because of its surface irregularity, porous, the in addition very big specific surface area of microcosmic point, adsorbing indoor harmful gases, the ability absorbing sound wave is very strong.
Summary, the present invention additionally also has following effect:
1, due to the compactness of material structure of the present invention, and soil class height sensible heat filler (such as laterite powder, the thermal capacity of soil is generally 1 ~ 2.5J/KgK) supplement, make its specific heat capacity higher (numerical range of specific heat capacity is 2.5 ~ 3.2J/KgK).
2, material of the present invention is before phase transformation occurs, the capacity of heat transmission is poor, thermal conductivity is 0.2 ~ 0.3W/mk, belong to heat-insulating heat-preserving material scope, after material phase transformation of the present invention occurs, along with the rising of temperature, its capacity of heat transmission is strengthened gradually, thermal conductivity is 1.8 ~ 2.1W/mk, and large thermal conductivity is conducive to realizing storing heat fast.
3, material phase transformation generation precontract of the present invention has the natural moisture of 7%, and phase transformation stage of growth also has the crystal water of about 7% to participate in, in its microvoid structure, can independently absorb and discharge moisture, regulate humidity, improve environmental degree of comfort on the one hand, well process condensation and dewfall phenomenon on the one hand, improve the thermal property of building enclosure, in winter pyrogenicity environment, humidity 35 ~ 40%, prevent electrostatic, in summer hygrothermal environment, humidity 45 ~ 60%, avoids the environment gone mouldy.
4, material of the present invention absolutely not burns, and by GB8624-2006 " material of construction and product burns grading performance " inspection, uninflammability reaches A1 level.
5, GB/T20285-2006 " classification of material producing smoke toxic " pressed by material of the present invention, and combustion product gases concentration is 100mg/h, and biological narcoticness and pungency inspection reach safety (AQ) level, have very high security.
6, material of the present invention also possesses water resistance, detects through SGS, not containing formaldehyde, asbestos, toluene, dimethylbenzene, prussiate, SO
3, SO
2, tens of the pollutents such as radionuclide, without the accumulation of salt in the surface soil, halogenation, non-corrosive corrosion during applied fasteners.
7, material reference standard JGJ51-2002 " lightweight aggregate concrete technology code " of the present invention, JG158-2004 " glue powder polyphenyl granule exterior wall outer heat preservation system ", and before using heat storage coefficient tester to record phase transformation, heat storage coefficient is 1.90 ~ 2.30W/m
2k, in phase transition process, because absorbing heat, temperature does not change, and the heat storage coefficient calculated is about 7.3 ~ 8.25W/m
2k is the material of extraordinary resistance temperature variation.
8, material of the present invention is because possessing microvoid structure, in addition the specific surface area such as attapulgite clay, laterite powder is very big, under the material effects that adsorptivity is extremely strong, can sound-absorbing, protection against the tide, adsorb peculiar smell and poisonous volatile matter, anti-bacteria, the smell-removing material of indoor decoration material or sanitary facility can be used as.
9, material of the present invention can be applicable to building and ornament materials, and its shape-plastic is strong, needs almost can make arbitrary color, decorative pattern and shape according to decorative environment.
10, material of the present invention is in its constitutionally stable period, and the carbonic acid gas slowly in solidification air, forms the MgCO of one deck densification on surface
3, minimizing greenhouse gases are played a role.
It should be appreciated by those skilled in the art that those skilled in the art are realizing described change case in conjunction with prior art and above-described embodiment, do not repeat at this.Such change case does not affect flesh and blood of the present invention, does not repeat them here.
Above preferred embodiment of the present invention is described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, the equipment wherein do not described in detail to the greatest extent and structure are construed as to be implemented with the usual manner in this area; Any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or being revised as the Equivalent embodiments of equivalent variations, this does not affect flesh and blood of the present invention.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (8)
1. a composite inorganic hydrous salt phase change material, is characterized in that, be applied in building phase change material, the weight of described composite inorganic hydrous salt phase change material is: magnesia powder 100 parts, clay powder 10 ~ 30 parts, slag powders 15 ~ 25 parts, Al
2o
3filler 6 ~ 25 parts, complex vitriolate 45 ~ 60 parts, wood chip 10 ~ 32 parts, composite phosphate 0.5 ~ 1 part, perlite 5 ~ 7 parts, 75 ~ 85 parts, water.
2. composite inorganic hydrous salt phase change material as claimed in claim 1, it is characterized in that, the parts by weight of raw materials proportioning of described composite inorganic hydrous salt phase change material is: magnesia powder 100 parts, clay powder 10 parts, slag powders 15 parts, Al
2o
3filler 25 parts, complex vitriolate 50 parts, wood chip 30 parts, composite phosphate 1 part, perlite 5 parts, 75 parts, water.
3. composite inorganic hydrous salt phase change material as claimed in claim 1, is characterized in that, described composite phosphate comprises any one or two or more combinations in monocalcium phosphate, tertiary sodium phosphate, tripoly phosphate sodium STPP and Sodium hexametaphosphate 99; Described complex vitriolate comprises any one or two or more combinations in calcium sulfate, Tai-Ace S 150, magnesium sulfate and ferrous sulfate.
4. composite inorganic hydrous salt phase change material as claimed in claim 1, is characterized in that, described clay powder comprises any one or two or more combinations in laterite powder, loess powder, black earth powder, attapulgite clay, wilkinite; Described Al
2o
3filler comprises any one or two or more combinations in aluminium silicon ash, bauxitic clay, kaolin.
5. a preparation method for inorganic compounding phase change plate, wherein, be applied in building phase change material, described method comprises:
Step S1, provide the raw material of pre-configured composite inorganic hydrous salt phase change material, described parts by weight of raw materials proportioning is: magnesia powder 100 parts, clay powder 10 ~ 30 parts, slag powders 15 ~ 25 parts, Al
2o
3filler 6 ~ 25 parts, complex vitriolate 45 ~ 60 parts, wood chip 10 ~ 32 parts, composite phosphate 0.5 ~ 1 part, perlite 5 ~ 7 parts, 75 ~ 85 parts, water;
Step S2, the raw material of pre-configured composite inorganic hydrous salt phase change material to be mixed, carry out being stirred to evenly being made into mixed slurry;
Step S3, by described mixed slurry and glasscloth compound, make described inorganic compounding accumulation of heat panel;
Wherein, the processing condition of described stirring are as follows: temperature controls at 10 DEG C ~ 25 DEG C, churning time 12 ~ 18 minutes.
6. the preparation method of inorganic compounding phase change plate as claimed in claim 5, is characterized in that, uses stream slurry rolling methods by described mixed slurry and glasscloth compound.
7. the preparation method of inorganic compounding phase change plate as claimed in claim 5, is characterized in that, adopt the 80 ~ 140g/m of 2 layers ~ 6 layers
2glasscloth.
8. the preparation method of inorganic compounding phase change plate as claimed in claim 5, it is characterized in that, described inorganic compounding phase change plate is applied in upholstery.
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