CN117185706A - Phase-change microcapsule energy-storage heat-preservation centrifugal glass wool board and preparation method thereof - Google Patents
Phase-change microcapsule energy-storage heat-preservation centrifugal glass wool board and preparation method thereof Download PDFInfo
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- CN117185706A CN117185706A CN202311214252.XA CN202311214252A CN117185706A CN 117185706 A CN117185706 A CN 117185706A CN 202311214252 A CN202311214252 A CN 202311214252A CN 117185706 A CN117185706 A CN 117185706A
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- 239000003094 microcapsule Substances 0.000 title claims abstract description 104
- 239000011491 glass wool Substances 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- 238000004146 energy storage Methods 0.000 title claims abstract description 29
- 238000004321 preservation Methods 0.000 title claims abstract description 28
- 239000003365 glass fiber Substances 0.000 claims abstract description 58
- 229920000742 Cotton Polymers 0.000 claims abstract description 44
- 239000002994 raw material Substances 0.000 claims abstract description 29
- 238000002844 melting Methods 0.000 claims abstract description 18
- 230000008018 melting Effects 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 238000005507 spraying Methods 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 12
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 239000011521 glass Substances 0.000 claims description 35
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 30
- 239000000835 fiber Substances 0.000 claims description 16
- 238000006116 polymerization reaction Methods 0.000 claims description 16
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 239000000839 emulsion Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 239000012782 phase change material Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 10
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 10
- 229920000877 Melamine resin Polymers 0.000 claims description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 9
- 239000004202 carbamide Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 8
- 229910021538 borax Inorganic materials 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 239000004328 sodium tetraborate Substances 0.000 claims description 6
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 6
- 238000000889 atomisation Methods 0.000 claims description 5
- 239000011162 core material Substances 0.000 claims description 5
- 239000010433 feldspar Substances 0.000 claims description 5
- 239000006060 molten glass Substances 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- 239000010453 quartz Substances 0.000 claims description 5
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 4
- 230000000379 polymerizing effect Effects 0.000 claims description 4
- QYHKLBKLFBZGAI-UHFFFAOYSA-N boron magnesium Chemical compound [B].[Mg] QYHKLBKLFBZGAI-UHFFFAOYSA-N 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000000967 suction filtration Methods 0.000 claims description 2
- 238000005119 centrifugation Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 239000012071 phase Substances 0.000 description 26
- 238000009413 insulation Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 description 6
- 239000008367 deionised water Substances 0.000 description 6
- 229910021641 deionized water Inorganic materials 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 239000000295 fuel oil Substances 0.000 description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 description 6
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 238000004945 emulsification Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000012188 paraffin wax Substances 0.000 description 4
- 235000019270 ammonium chloride Nutrition 0.000 description 3
- 239000008346 aqueous phase Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 239000008234 soft water Substances 0.000 description 3
- 238000003828 vacuum filtration Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 210000002268 wool Anatomy 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009950 felting Methods 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
The application relates to the field of energy storage glass wool boards, and discloses a phase change microcapsule energy storage heat preservation centrifugal glass wool board and a preparation method thereof, wherein raw materials of the glass wool board comprise glass fibers and phase change microcapsules, and the phase change microcapsules are uniformly sprayed on the glass fibers in a powder spraying manner; the preparation method of the glass wool board comprises the following steps: mixing glass fiber raw materials, melting the glass fiber raw materials, forming glass fibers, forming and solidifying cotton collecting, wherein the cotton collecting and forming steps are as follows: and uniformly spraying the binder, the curing agent and the phase-change microcapsules on the glass fibers through respective nozzles while the glass fibers are settled, and falling the glass fibers on a cotton collecting net belt to form uncured raw cotton. The centrifugal glass wool and the phase-change microcapsule are uniformly mixed and pressed into a plate, so that the centrifugal glass wool and the phase-change microcapsule can be used in cold areas, indoor temperature fluctuation can be reduced, comfort level is improved, and heating cost is saved.
Description
Technical Field
The application relates to the technical field of energy storage glass wool boards, in particular to a phase change microcapsule energy storage heat preservation centrifugal glass wool board and a preparation method thereof.
Background
The glass wool board is a glass wool rolled felt product, can be used for heat preservation, heat insulation, sound absorption and the like of an outer wall of a building, and has the characteristics of simple construction and random cutting. The glass wool is prepared by using natural ores such as quartz sand, limestone and dolomite as main raw materials and mixing with chemical raw materials such as sodium carbonate and borax to melt into glass, and in a molten state, the glass wool is blown by means of external force to form flocculent fine fibers, and the fibers are mutually entangled to form a plurality of fine gaps.
While the traditional glass wool board material has a certain heat preservation and insulation effect, the energy-saving requirement is difficult to meet in cold areas. For example, patent publication number CN219491355U discloses a hydrophobic glass wool board for heat insulation of building exterior, comprising a base plate and heat insulation members, wherein the heat insulation members are installed at the bottom end of the base plate, and the installation members are installed at both sides of the heat insulation members; the decorative component is arranged at the bottom end of the mounting component; wherein, the installation component is used for carrying out the installation work to the heat preservation component, and the decoration component is used for carrying out the decoration work to the heat preservation component. In this technical scheme, although it reaches the waterproof purpose of heat preservation through the heat preservation component that sets up, but its heat preservation principle is through the heat preservation construction slowing down the dissipation of indoor heat, and in cold district, if there is not outside heat input, even have the heat preservation component, its indoor heat is lost very fast to can not reach the effect of long-time energy storage, if the indoor heat is lost after finishing, its indoor temperature will decline very fast, can not reach energy-conserving purpose.
In addition, the patent with publication number CN103267206A discloses a vacuum insulation panel material, wherein the core layer heat insulation material is formed by compounding a phase change material and a glass fiber material, and the phase change temperature of the phase change material is between 20 and 30 ℃, so that the vacuum insulation panel material is applied to the field of building energy conservation. However, the phase transition temperature in this technical scheme is 20-30 ℃, and if the temperature cannot reach the temperature at which the phase transition occurs in cold regions, such a vacuum insulation panel material is not suitable. Therefore, the centrifugal glass wool board capable of being applied to energy storage and heat preservation in cold areas is prepared, indoor temperature fluctuation is reduced, comfort level is improved, heating cost is saved, and the centrifugal glass wool board is a technical problem to be solved.
Disclosure of Invention
In view of the above, the application aims to provide a phase-change microcapsule energy-storage heat-insulation centrifugal glass wool board and a preparation method thereof, which are used for evenly mixing and pressing centrifugal glass wool and phase-change microcapsules into boards, so that the centrifugal glass wool board can be used in cold areas, indoor temperature fluctuation can be reduced, comfort level is improved, and heating cost is saved.
The application solves the technical problems by the following technical means:
in a first aspect, the application discloses a phase-change microcapsule energy-storage heat-insulation centrifugal glass wool board, wherein raw materials of the glass wool board comprise glass fibers and phase-change microcapsules, and the phase-change microcapsules are uniformly sprayed on the glass fibers in a powder spraying mode.
Further, the glass fiber comprises, by mass, 25-30 parts of glass, 15-25 parts of quartz powder, 15-25 parts of feldspar, 6-12 parts of sodium carbonate, 7-13 parts of borax and 10-14 parts of kieselguhr; the mass ratio of the glass fiber to the phase-change microcapsule is (15-20): 1.
In a second aspect, the application also discloses a preparation method of the phase-change microcapsule energy-storage heat-preservation centrifugal glass wool board, which uses the raw materials and comprises the following steps: mixing glass fiber raw materials, melting the glass fiber raw materials, forming glass fibers, forming and solidifying cotton collecting, wherein the cotton collecting and forming steps are as follows: and uniformly spraying the binder, the curing agent and the phase-change microcapsules on the glass fibers through respective nozzles while the glass fibers are settled, and falling the glass fibers on a cotton collecting net belt to form uncured raw cotton. The binder in the scheme is water-soluble phenolic resin or water-based epoxy resin emulsion; the curing agent is one of aliphatic polyamine, alicyclic polyamine and low molecular polyamide.
Further, in the cotton collecting and forming step, the nozzle pressure of the curing agent is 0.25-0.3Mpa, the atomization air pressure is 0.08-0.1Mpa, and the nozzle pressure of the phase-change microcapsule is 0.5-0.8Mpa.
Further, the melting step includes: the mixed glass fiber raw materials are put into a kiln for high-temperature melting, wherein the melting temperature is 1450-1460 ℃, the bottom temperature is 940-1000 ℃, the throat temperature is 950-1000 ℃, and the working part temperature is 980-1020 ℃.
Further, the fiberizing step includes: the molten glass fiber flows into a distributor rotating at high speed through a platinum bushing plate and is thrown out through a centrifugal head, a plurality of small holes are arranged on the side wall of the centrifugal head, the inflowing glass liquid is thrown into a thin flow through centrifugal force, and then the thin flow is further pulled into fine fiber by high-temperature air flow sprayed out by an annular gas nozzle which is concentrically arranged with the centrifugal head.
Further, the curing step includes: solidifying the raw cotton which is not solidified into a glass plate or a glass felt by a solidifying furnace, and cutting the raw cotton into the glass cotton plate; wherein the curing oven temperature: the temperature in the furnace in the zone 1 is 205-220 ℃, and the furnace hearth temperature is 240-285 ℃; the temperature in the 2 zone furnace is 200-230 ℃ and the furnace hearth temperature is 250-300 ℃; curing oven wind speed: zone 1 is 850-1200 rpm and zone 2 is 800-1250 rpm.
Further, the preparation method of the phase-change microcapsule comprises the following steps: preparing a wall material, preparing core material emulsion and coating microcapsules; the preparation steps of the wall material comprise: pre-polymerizing urea and formaldehyde, adding melamine and formaldehyde, and pre-polymerizing, wherein the phase change temperature of the phase change material in the phase change microcapsule is 5-15 ℃.
Further, the mass ratio of urea to melamine is (5-7): (1.5-2), wherein in the pre-polymerization step, the mass ratio of urea to formaldehyde is (5-7): 15; in the repolymerization step, the mass ratio of melamine to formaldehyde is (1.5-2): 3; the conditions of the pre-polymerization and the re-polymerization are as follows: pH=8-9, temperature 60-80 ℃, time 25-30 mm; and stirring at 500-1000rpm during the pre-polymerization and the pre-polymerization.
Further, the microcapsule coating step includes: dropwise adding the wall material into the emulsion under stirring, reacting for 4-6h, and performing suction filtration and cleaning to obtain a phase-change microcapsule; in the microcapsule coating step, the pH value of the reaction system is 2.5-3.0, the temperature is 60-70 ℃, and the stirring speed is 500-1000rpm.
The application has the beneficial effects that:
1. according to the phase-change microcapsule energy-storage heat-insulation centrifugal glass wool board, microcapsules are uniformly sprayed into glass fibers in a powder spraying mode before felting, and the microcapsules are bonded and not fallen off while felting is performed through a binder.
2. The phase change temperature of the phase change microcapsule is 5-15 ℃, and when the temperature rises to be higher than the phase change point of the phase change microcapsule, the phase change material absorbs heat and stores heat; when the temperature is reduced below the phase change point of the phase change microcapsule, the phase change material releases the stored heat; the phase transition temperature is more applicable in cold areas; therefore, the phase transition temperature of the glass wool board can reduce indoor temperature fluctuation, improve comfort level, reduce energy consumption and achieve the purpose of energy conservation when being used in cold areas.
3. The phase-change microcapsule is prepared from a core material which is liquid at normal temperature and has strong fluidity and larger volume change in the phase-change process (the phase-change temperature is 5-15 ℃), so that the problem that the core material is difficult to coat and use at normal temperature is solved; in addition, in the preparation process of the low-temperature-point phase-change microcapsule, the process flow of pre-polymerization and then pre-polymerization is adopted, specific reaction parameters and reaction conditions are adopted, and the low-temperature-point phase-change material microencapsulation can be realized by adopting a simple process, so that the cost is lower.
4. The prepared phase-change microcapsule has better coating effect and regular morphology, and the service lives of the phase-change microcapsule and the glass wool board are longer.
Drawings
FIG. 1 is a graph of energy storage and heat preservation test of a simulated room of a glass wool board prepared in example 4 of the present application;
FIG. 2 is a graph of energy storage and heat preservation test of a simulated room of a glass wool board prepared in example 5 of the present application;
FIG. 3 is a graph of energy storage and heat preservation test of a simulated room of a glass wool board prepared in example 6 of the present application;
FIG. 4 is an electron microscope scan of the phase-change microcapsules prepared by the phase-change microcapsule preparation method of example 1;
FIG. 5 is a transmission electron microscope scan of phase-change microcapsules prepared by the phase-change microcapsule preparation method of example 2;
FIG. 6 is a transmission electron microscope scan of phase-change microcapsules prepared by the phase-change microcapsule preparation method of example 3;
FIG. 7 is an image of a glass wool panel mold of the present application;
FIG. 8 is an electron microscope image of a glass wool plate mold of the present application.
Detailed Description
The application will be described in detail below with reference to the attached drawings:
example 1,
The embodiment is a preparation of a first phase-change microcapsule, which comprises the following specific steps:
preparing an aqueous phase: to 140g of deionized water, 10g of ethylene maleic anhydride copolymer (E60), 3g of polyvinyl alcohol (PVA), 0.2g of resorcinol, and 0.2g of ammonium chloride were added, and stirred at 800rpm for 20 minutes at normal temperature.
Preparation of the prepolymer: 5g of urea was added to 15g of formaldehyde at pH=8, at a stirring speed of 500rpm and at a temperature of 60℃and prepolymerized for 25min, followed by 1.5g of melamine and 3g of formaldehyde at pH=8 and prepolymerized for a further 25min.
And (3) emulsification: 20g of paraffin wax (phase transition temperature point 5 ℃) is slowly dripped into the water phase at a rotation speed of 1000rpm, and emulsion is obtained after emulsification for 25min.
The preparation steps of microcapsule coating and phase change microcapsule comprise: the prepolymer was added dropwise to the emulsion at 60℃and 500rpm, the pH was adjusted to 2.5 during the dropwise addition, and the reaction was continued for 4 hours. After the reaction is stopped, vacuum filtration is carried out, the microcapsule is obtained by washing twice with deionized water, and the microcapsule powder of the phase change material is obtained by drying by a freeze dryer.
EXAMPLE 2,
The embodiment is a preparation of a second phase-change microcapsule, which specifically comprises the following steps:
preparing an aqueous phase: to 145g of deionized water, 12g of ethylene maleic anhydride copolymer (E60), 4g of polyvinyl alcohol (PVA), 0.3g of resorcinol, and 0.3g of ammonium chloride were added, and stirred at 1150rpm at room temperature for 25 minutes.
Preparation of the prepolymer: 6g of urea was added to 15g of formaldehyde at pH=8.5, stirring speed 750rpm and temperature 70℃for a preliminary polymerization for 30min, then 1.8g of melamine was added and 3g of formaldehyde were further subjected to a preliminary polymerization for 30min at pH=8.5.
And (3) emulsification: 25g of paraffin wax (phase transition temperature point 10 ℃) is slowly dripped into the water phase at the rotation speed of 1200rpm, and emulsion is obtained after 30 minutes of emulsification.
The preparation steps of microcapsule coating and phase change microcapsule comprise: the prepolymer was added dropwise to the emulsion at 65℃and 750rpm, the pH was adjusted to 2.8 during the dropwise addition, and the reaction was continued for 5 hours. After the reaction is stopped, vacuum filtration is carried out, the microcapsule is obtained by washing twice with deionized water, and the microcapsule powder of the phase change material is obtained by drying by a freeze dryer.
EXAMPLE 3,
The preparation method of the third phase-change microcapsule comprises the following specific steps:
preparing an aqueous phase: to 150g of deionized water, 15g of ethylene maleic anhydride copolymer (E60), 5g of polyvinyl alcohol (PVA), 0.4g of resorcinol, and 0.4g of ammonium chloride were added, and stirred at 1500rpm for 30 minutes at normal temperature.
Preparation of the prepolymer: 7g of urea was added to 15g of formaldehyde at pH=9 with stirring speed 1000rpm and temperature 80℃for a preliminary polymerization of 35min, followed by 2g of melamine and 3g of formaldehyde for a further preliminary polymerization of 35min at pH=9.
And (3) emulsification: 30g of paraffin wax (phase transition temperature point 15 ℃) is slowly dripped into the water phase at 1500rpm, and emulsion is obtained after 35min.
The preparation steps of microcapsule coating and phase change microcapsule comprise: the prepolymer was added dropwise to the emulsion at 70℃and 1000rpm, the pH was adjusted to 3.0 during the dropwise addition, and the reaction was continued for 6 hours. After the reaction is stopped, vacuum filtration is carried out, the microcapsule is obtained by washing twice with deionized water, and the microcapsule powder of the phase change material is obtained by drying by a freeze dryer.
EXAMPLE 4,
The embodiment is a preparation method of a phase-change microcapsule energy-storage heat-insulation centrifugal glass wool board, which uses the phase-change microcapsule prepared in the embodiment 1, and comprises the following steps:
mixing glass fiber raw materials: the raw materials are prepared into a batch meeting the requirements of glass wool components, wherein 25kg of broken glass, 15kg of quartz powder, 15kg of feldspar, 6kg of sodium carbonate, 7kg of borax and 10kg of boron-magnesium stone are mixed for 3min; the water content of the mixture is 4%.
Melting glass fiber raw materials: the mixed glass fiber raw materials are put into a kiln for high-temperature melting, wherein the melting temperature is 1450 ℃, the bottom temperature is 940 ℃, the throat temperature is 950 ℃, the working part temperature is 980 ℃, the glass liquid level height is 150mm, the kiln pressure is 1.0Pa, the heavy oil temperature is 110 ℃, the heavy oil pressure is 0.25Mpa, the atomizing air pressure is 0.4Mpa, the gun-protection air pressure is 0.02Mpa, the total flue temperature is 240 ℃, the flue suction force is 18Pa, and the meson air quantity is 50%.
Glass fiber forming: the molten glass fiber flows into a high-speed rotating distributor through a platinum bushing plate and is thrown out through a centrifugal head, a plurality of small holes are arranged on the side wall of the centrifugal head, the inflowing glass liquid is thrown into a thin flow through centrifugal force, and then the thin flow is further pulled into fine fiber by high-temperature air flow sprayed out by an annular gas nozzle which is concentrically arranged with the centrifugal head; wherein, the feed channel gas valve front pressure is 0.15Mpa, the valve back pressure is 0.02Mpa, the centrifuge gas valve front pressure is 0.1Mpa, the valve back pressure is 0.06Mpa, the centrifuge fiber wind pressure is 0.04Mpa, the medium frequency backwater temperature is 10 ℃, the circulating soft water pressure is 0.6Mpa, the feed channel temperature is 1000 ℃, the glass viscosity is 1060 poise, the gob temperature is 1095 ℃, the medium frequency current is 24KW, the bushing current is 2KA, the glass flow is 560Kg/hr, the centrifuge head top temperature is 1000 ℃, the centrifuge head middle temperature is 970 ℃, the centrifuge head bottom temperature is 950 ℃, the stretching wind pressure is 0.04Mpa, the cotton wind distribution pressure is 0.015Mpa, the cotton cutter pressure is 0.1Mpa, the centrifuge head rotating speed is 2900 rpm, the centrifuge mixing pressure is 1250mm, the negative pressure wind rotating speed is 850 rpm.
And (3) cotton collecting and forming: uniformly spraying the binder, the curing agent and the phase-change microcapsules on the glass fibers through respective nozzles while the glass fibers are settled, and falling the glass fibers on a cotton collecting net belt to form uncured raw cotton; wherein the nozzle pressure of the curing agent is 0.25Mpa, the atomization wind pressure is 0.08Mpa, and the nozzle pressure of the phase-change microcapsule is 0.5Mpa; the spraying speed of the phase-change microcapsule is 400g/min; the mass of the phase-change microcapsule is 1/15 of that of the glass fiber.
Curing: solidifying the raw cotton which is not solidified into a glass plate or a glass felt by a solidifying furnace, and cutting the raw cotton into the glass cotton plate; wherein the curing oven temperature: the temperature in the furnace in the zone 1 is 205 ℃ and the temperature in the furnace chamber is 240 ℃; the temperature in the furnace in the zone 2 is 200 ℃ and the temperature in the furnace chamber is 250 ℃; curing oven wind speed: zone 1 is 850 rpm and zone 2 is 800 rpm.
EXAMPLE 5,
The embodiment is a preparation method of a phase-change microcapsule energy-storage heat-insulation centrifugal glass wool board, which uses the phase-change microcapsule prepared in the embodiment 2, and comprises the following steps:
mixing glass fiber raw materials: preparing raw materials into a batch meeting the requirements of glass wool components, wherein the raw materials comprise 27.5kg of broken glass, 20kg of quartz powder, 20kg of feldspar, 9kg of sodium carbonate, 10kg of borax and 12kg of kieselguhr, and the mixing time is 4min; the water content of the mixture is 5%.
Melting glass fiber raw materials: the mixed glass fiber raw materials are put into a kiln for high-temperature melting, wherein the melting temperature is 1455 ℃, the bottom temperature is 970 ℃, the throat temperature is 975 ℃, the working part temperature is 1000 ℃, the glass liquid level height is 150mm, the kiln pressure is 1.25Pa, the heavy oil temperature is 120 ℃, the heavy oil pressure is 0.3Mpa, the atomizing air pressure is 0.45Mpa, the gun-protection air pressure is 0.035Mpa, the total flue temperature is 260 ℃, the flue suction force is 20Pa, and the meson air quantity is 60%.
Glass fiber forming: the molten glass fiber flows into a high-speed rotating distributor through a platinum bushing plate and is thrown out through a centrifugal head, a plurality of small holes are arranged on the side wall of the centrifugal head, the inflowing glass liquid is thrown into a thin flow through centrifugal force, and then the thin flow is further pulled into fine fiber by high-temperature air flow sprayed out by an annular gas nozzle which is concentrically arranged with the centrifugal head; wherein the feed channel gas valve front pressure is 0.175Mpa, the valve back pressure is 0.02Mpa, the centrifuge gas valve front pressure is 0.125Mpa, the valve back pressure is 0.07Mpa, the centrifuge fiber wind pressure is 0.045Mpa, the medium frequency backwater temperature is 17 ℃, the circulating soft water pressure is 0.7Mpa, the feed channel temperature is 1100 ℃, the glass viscosity is 1065 poise, the gob temperature is 1110 ℃, the medium frequency current head is 26.5KW, the bushing current is 2.5KA, the glass flow is 585Kg/hr, the head top temperature is 1005 ℃, the head middle temperature is 975 ℃, the head bottom temperature is 955 ℃, the stretching wind pressure is 0.045Mpa, the cotton distribution wind pressure is 0.0175Mpa, the cotton cutter pressure is 0.3, the head rotation speed is 3150 rpm, the centrifuge mixing pressure is 1375mmWG, and the negative pressure wind rotation speed is 1075 rpm.
And (3) cotton collecting and forming: uniformly spraying the binder, the curing agent and the phase-change microcapsules on the glass fibers through respective nozzles while the glass fibers are settled, and falling the glass fibers on a cotton collecting net belt to form uncured raw cotton; wherein the nozzle pressure of the curing agent is 0.275Mpa, the atomization wind pressure is 0.09Mpa, and the nozzle pressure of the phase-change microcapsule is 0.65Mpa; the spraying speed of the phase-change microcapsule is 400g/min; the mass of the phase-change microcapsule is 1/17.5 of that of the glass fiber.
Curing: solidifying the raw cotton which is not solidified into a glass plate or a glass felt by a solidifying furnace, and cutting the raw cotton into the glass cotton plate; wherein the curing oven temperature: the temperature in the furnace in the zone 1 is 212.5 ℃, and the temperature in the hearth is 262.5 ℃; the temperature in the 2 zone furnace is 215 ℃, and the furnace hearth temperature is 275 ℃; curing oven wind speed: zone 1 is 1025 rpm and zone 2 is 1025 rpm.
EXAMPLE 6,
The embodiment is a preparation method of a phase-change microcapsule energy-storage heat-insulation centrifugal glass wool board, which uses the phase-change microcapsule prepared in the embodiment 3, and comprises the following steps:
mixing glass fiber raw materials: preparing raw materials into a batch meeting the requirements of glass wool components, wherein the raw materials comprise 30kg of broken glass, 25kg of quartz powder, 25kg of feldspar, 12kg of sodium carbonate, 13kg of borax and 14kg of boron-magnesium stone, and the mixing time is 5min; the water content of the mixture is 6%.
Melting glass fiber raw materials: the mixed glass fiber raw materials are put into a kiln for high-temperature melting, wherein the melting temperature is 1460 ℃, the bottom temperature is 1000 ℃, the throat temperature is 1000 ℃, the working part temperature is 1020 ℃, the glass liquid level height is 150mm, the kiln pressure is 1.5Pa, the heavy oil temperature is 130 ℃, the heavy oil pressure is 0.35Mpa, the atomizing air pressure is 0.5Mpa, the gun-holding air pressure is 0.05Mpa, the total flue temperature is 280 ℃, the flue suction force is 22Pa, and the meson air quantity is 70%.
Glass fiber forming: the molten glass fiber flows into a high-speed rotating distributor through a platinum bushing plate and is thrown out through a centrifugal head, a plurality of small holes are arranged on the side wall of the centrifugal head, the inflowing glass liquid is thrown into a thin flow through centrifugal force, and then the thin flow is further pulled into fine fiber by high-temperature air flow sprayed out by an annular gas nozzle which is concentrically arranged with the centrifugal head; wherein the feed channel gas valve front pressure is 0.2Mpa, the valve back pressure is 0.02Mpa, the centrifuge gas valve front pressure is 0.15Mpa, the valve back pressure is 0.08Mpa, the centrifuge fiber wind pressure is 0.05Mpa, the medium frequency backwater temperature is 24 ℃, the circulating soft water pressure is 0.8Mpa, the feed channel temperature is 1200 ℃, the glass viscosity is 1070 poise, the gob temperature is 1120 ℃, the medium frequency current centrifugal head is 29KW, the bushing current is 3KA, the glass flow is 610Kg/hr, the centrifugal head top temperature is 1010 ℃, the centrifugal head middle temperature is 980 ℃, the centrifugal head bottom temperature is 960 ℃, the stretching wind pressure is 0.05Mpa, the cotton wind distribution pressure is 0.02Mpa, the cotton cutter pressure is 0.5Mpa, the centrifugal head rotating speed is 3400 rpm, the centrifuge mixing pressure is 1500mmWG, and the negative pressure wind rotating speed is 1300 rpm.
And (3) cotton collecting and forming: uniformly spraying the binder, the curing agent and the phase-change microcapsules on the glass fibers through respective nozzles while the glass fibers are settled, and falling the glass fibers on a cotton collecting net belt to form uncured raw cotton; wherein the nozzle pressure of the curing agent is 0.3Mpa, the atomization wind pressure is 0.1Mpa, and the nozzle pressure of the phase-change microcapsule is 0.8Mpa; the spraying speed of the phase-change microcapsule is 400g/min; the mass of the phase-change microcapsule is 1/20 of that of the glass fiber.
Curing: solidifying the raw cotton which is not solidified into a glass plate or a glass felt by a solidifying furnace, and cutting the raw cotton into the glass cotton plate; wherein the curing oven temperature: the temperature in the furnace in the zone 1 is 220 ℃, and the temperature in the furnace hearth is 285 ℃; the temperature in the furnace in the zone 2 is 230 ℃ and the temperature in the furnace chamber is 300 ℃; curing oven wind speed: zone 1 is 1200rpm and zone 2 is 1250 rpm.
The glass wool boards (thickness 5 mm) prepared in examples 4 to 6 and glass wool boards (thickness 5 mm) without phase change microcapsules were prepared as simulated rooms with a growth width and a height of 1m, respectively, in examples 4 to 5, 6 and blank groups, and were subjected to energy storage and heat insulation tests as follows:
1. placing the blank group simulation room into an environment test box, and suspending a temperature measuring probe in the center of the room; placing a temperature-controllable heating lamp in a blank group simulation room; setting the temperature of the environment experiment box to 0 ℃, turning on a temperature-controllable heating lamp, setting the temperature to 40 ℃, closing the temperature when the temperature reaches 40 ℃, and recording the temperature change data of the subsequent simulated room. The above experiment was repeated using the phase-change 15℃glass wool board prepared in example 6.
2. Placing the blank group simulation room into an environment test box, and suspending a temperature measuring probe in the center of the room; placing a temperature-controllable heating lamp in a blank group simulation room; setting the temperature of the environment experiment box to 0 ℃, turning on a temperature-controllable heating lamp, setting the temperature to 20 ℃, closing the temperature when the temperature reaches 20 ℃, and recording temperature change data of a subsequent simulated room. The above experiment was repeated using the phase-change 10℃glass wool board prepared in example 5.
3. Placing the blank group simulation room into an environment test box, and suspending a temperature measuring probe in the center of the room; placing a temperature-controllable heating lamp in a blank group simulation room; setting the temperature of the environment experiment box to 0 ℃, turning on a temperature-controllable heating lamp, setting the temperature to 15 ℃, closing the temperature when the temperature reaches 15 ℃, and recording the temperature change data of the subsequent simulated room. The above experiment was repeated using the phase change 5℃glass wool board prepared in example 4.
The recorded temperature change curves of the simulated rooms are shown in fig. 1-3, and as can be seen from the temperature change curves of fig. 1-3, after the phase change microcapsules of the application are added on the glass fiber, the temperature decrease speeds of the simulated rooms in the example 4, the simulated room in the example 5 and the simulated room in the example 6 are slower, and after 25 hours, the temperatures of the simulated rooms in the example 4, the simulated room in the example 5 and the simulated room in the example 6 are higher than those of the simulated rooms in the blank group; therefore, the glass wool board can reduce indoor temperature fluctuation, improve comfort level, reduce energy consumption and achieve the aim of energy conservation.
The phase-change microcapsules prepared in examples 1-3 are subjected to electron microscope scanning, as shown in fig. 4, and the electron microscope scanning can be used for showing that the phase-change microcapsules prepared by the preparation method of the phase-change microcapsules are smooth in surface and regular in morphology, so that the problems of easy leakage, phase separation and the like of the phase-change microcapsules in the prior art are effectively solved.
The phase-change microcapsules prepared in example 1 to example 3 were subjected to transmission electron microscope scanning; the results are shown in fig. 5 and 6, and it can be seen from the results that the black part of the microsphere is a core material, the white outer edge is a shell material, and it can be shown from fig. 5 and 6 that the preparation process of the application successfully coats the paraffin low-temperature phase-change material with the phase-change temperature of 5-15 ℃.
The glass wool boards prepared in examples 4-6 are subjected to electron microscope scanning, and as shown in fig. 7 and 8, it can be seen that the phase-change microcapsules of the application can be firmly adhered to glass fibers, and the microcapsules have regular morphology, smooth surface and good coating effect, so that the phase-change microcapsules and the glass wool boards have longer service lives.
The above embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present application, which is intended to be covered by the scope of the claims of the present application. The technology, shape, and construction parts of the present application, which are not described in detail, are known in the art.
Claims (10)
1. The utility model provides a phase transition microcapsule energy storage heat preservation centrifugation glass wool board which characterized in that: the raw materials of the glass wool board comprise glass fibers and phase-change microcapsules, and the phase-change microcapsules are uniformly sprayed on the glass fibers in a powder spraying mode.
2. The phase-change microcapsule energy-storage heat-preservation centrifugal glass wool board according to claim 1, wherein: the glass fiber comprises, by mass, 25-30 parts of glass, 15-25 parts of quartz powder, 15-25 parts of feldspar, 6-12 parts of sodium carbonate, 7-13 parts of borax and 10-14 parts of boron-magnesium stone; the mass ratio of the glass fiber to the phase-change microcapsule is (15-20): 1.
3. A preparation method of a phase-change microcapsule energy-storage heat-preservation centrifugal glass wool board, which is characterized by using the raw materials in claim 2, and comprising the following steps: mixing glass fiber raw materials, melting the glass fiber raw materials, forming glass fibers, forming and solidifying cotton collecting, wherein the cotton collecting and forming steps are as follows: and uniformly spraying the binder, the curing agent and the phase-change microcapsules on the glass fibers through respective nozzles while the glass fibers are settled, and falling the glass fibers on a cotton collecting net belt to form uncured raw cotton.
4. The method for preparing the phase-change microcapsule energy-storage heat-preservation centrifugal glass wool board according to claim 3, which is characterized in that: in the cotton collecting and forming step, the nozzle pressure of the curing agent is 0.25-0.3Mpa, the atomization air pressure is 0.08-0.1Mpa, and the nozzle pressure of the phase-change microcapsule is 0.5-0.8Mpa.
5. The method for preparing the phase-change microcapsule energy-storage heat-preservation centrifugal glass wool board according to claim 3, wherein the melting step comprises the following steps: the mixed glass fiber raw materials are put into a kiln for high-temperature melting, wherein the melting temperature is 1450-1460 ℃, the bottom temperature is 940-1000 ℃, the throat temperature is 950-1000 ℃, and the working part temperature is 980-1020 ℃.
6. The method for preparing the phase-change microcapsule energy-storage heat-preservation centrifugal glass wool board according to claim 3, wherein the fiber forming step comprises the following steps: the molten glass fiber flows into a distributor rotating at high speed through a platinum bushing plate and is thrown out through a centrifugal head, a plurality of small holes are arranged on the side wall of the centrifugal head, the inflowing glass liquid is thrown into a thin flow through centrifugal force, and then the thin flow is further pulled into fine fiber by high-temperature air flow sprayed out by an annular gas nozzle which is concentrically arranged with the centrifugal head.
7. The method for preparing the phase-change microcapsule energy-storage heat-preservation centrifugal glass wool board according to claim 3, wherein the solidifying step comprises the following steps: solidifying the raw cotton which is not solidified into a glass plate or a glass felt by a solidifying furnace, and cutting the raw cotton into the glass cotton plate; wherein the curing oven temperature: the temperature in the furnace in the zone 1 is 205-220 ℃, and the furnace hearth temperature is 240-285 ℃; the temperature in the 2 zone furnace is 200-230 ℃ and the furnace hearth temperature is 250-300 ℃; curing oven wind speed: zone 1 is 850-1200 rpm and zone 2 is 800-1250 rpm.
8. The method for preparing the phase-change microcapsule energy-storage heat-preservation centrifugal glass wool board according to claim 3, which is characterized in that: the preparation method of the phase-change microcapsule comprises the following steps: preparing a wall material, preparing core material emulsion and coating microcapsules; the preparation steps of the wall material comprise: pre-polymerizing urea and formaldehyde, adding melamine and formaldehyde, and pre-polymerizing, wherein the phase change temperature of the phase change material in the phase change microcapsule is 5-15 ℃.
9. The preparation method of the phase-change microcapsule energy-storage heat-preservation centrifugal glass wool board according to claim 8, which is characterized by comprising the following steps: the mass ratio of urea to melamine is (5-7): (1.5-2), wherein in the pre-polymerization step, the mass ratio of urea to formaldehyde is (5-7): 15; in the repolymerization step, the mass ratio of melamine to formaldehyde is (1.5-2): 3; the conditions of the pre-polymerization and the re-polymerization are as follows: pH=8-9, temperature 60-80 ℃, time 25-30 mm; and stirring at 500-1000rpm during the pre-polymerization and the pre-polymerization.
10. The preparation method of the phase-change microcapsule energy-storage heat-preservation centrifugal glass wool board according to claim 8, which is characterized by comprising the following steps: the microcapsule coating step comprises the following steps: dropwise adding the wall material into the emulsion under stirring, reacting for 4-6h, and performing suction filtration and cleaning to obtain a phase-change microcapsule; in the microcapsule coating step, the pH value of the reaction system is 2.5-3.0, the temperature is 60-70 ℃, and the stirring speed is 500-1000rpm.
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