CN112239922A - Heat-preservation rock wool board with density gradient and manufacturing method thereof - Google Patents
Heat-preservation rock wool board with density gradient and manufacturing method thereof Download PDFInfo
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- CN112239922A CN112239922A CN201910652541.5A CN201910652541A CN112239922A CN 112239922 A CN112239922 A CN 112239922A CN 201910652541 A CN201910652541 A CN 201910652541A CN 112239922 A CN112239922 A CN 112239922A
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- rock wool
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- wool board
- cotton
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- 239000011490 mineral wool Substances 0.000 title claims abstract description 130
- 238000004321 preservation Methods 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 229920000742 Cotton Polymers 0.000 claims abstract description 72
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 38
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000008859 change Effects 0.000 claims abstract description 30
- 238000003825 pressing Methods 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 23
- 239000005871 repellent Substances 0.000 claims abstract description 23
- 230000002940 repellent Effects 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000853 adhesive Substances 0.000 claims abstract description 18
- 230000001070 adhesive effect Effects 0.000 claims abstract description 18
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000006004 Quartz sand Substances 0.000 claims abstract description 15
- 229910052742 iron Inorganic materials 0.000 claims abstract description 15
- 239000010451 perlite Substances 0.000 claims abstract description 15
- 235000019362 perlite Nutrition 0.000 claims abstract description 15
- 239000004964 aerogel Substances 0.000 claims abstract description 8
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 8
- 239000005011 phenolic resin Substances 0.000 claims abstract description 7
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 21
- -1 melamine modified phenolic resin Chemical class 0.000 claims description 19
- 239000000155 melt Substances 0.000 claims description 16
- 230000009471 action Effects 0.000 claims description 14
- 239000000839 emulsion Substances 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 14
- 238000007664 blowing Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 239000004965 Silica aerogel Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 229920001296 polysiloxane Polymers 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 7
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- 229920000877 Melamine resin Polymers 0.000 claims description 3
- GHMLBKRAJCXXBS-UHFFFAOYSA-N Resorcinol Natural products OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 3
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 3
- 239000004202 carbamide Substances 0.000 claims description 3
- 229920005610 lignin Polymers 0.000 claims description 3
- 238000010309 melting process Methods 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002968 anti-fracture Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 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
- 238000000703 high-speed centrifugation Methods 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- CCEKAJIANROZEO-UHFFFAOYSA-N sulfluramid Chemical group CCNS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F CCEKAJIANROZEO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/002—Inorganic yarns or filaments
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/42—Coatings containing inorganic materials
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/465—Coatings containing composite materials
- C03C25/47—Coatings containing composite materials containing particles, fibres or flakes, e.g. in a continuous phase
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/12—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with filaments or yarns secured together by chemical or thermo-activatable bonding agents, e.g. adhesives, applied or incorporated in liquid or solid form
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/10—Insulation, e.g. vacuum or aerogel insulation
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Acoustics & Sound (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a heat preservation rock wool board with density gradient and a manufacturing method thereof, belonging to the technical field of rock wool boards, wherein the density of the rock wool board is distributed along the thickness direction in a mode of small density in the middle and large density at two sides, and the density change from the middle to any side is in gradient change, and the rock wool board comprises the following raw materials in parts by weight: 50-60 parts of basalt, 15-20 parts of quartz sand, 10-15 parts of iron ore, 10-15 parts of perlite, 10-25 parts of phenolic resin adhesive, 10-15 parts of silicon dioxide aerogel and 4-6 parts of water repellent are folded by a pendulum machine to form a plurality of cotton felts with different layers, and then the cotton felts are pre-pressed into the cotton felts with the same thickness, so that the cotton felts with more layers have large density and small layer number, and then the cotton felts are stacked in a mode of small middle density and large density at two sides and then are compounded together by pressing.
Description
Technical Field
The invention relates to the technical field of rock wool boards, in particular to a heat-preservation rock wool board with a density gradient and a manufacturing method thereof.
Background
The rock wool board is an artificial inorganic fiber which is processed by high-temperature melting and has the characteristics of light weight, small heat conductivity coefficient, heat absorption and non-combustion.
The production process of rock wool is characterized by that it simulates the natural process of volcano eruption, and the rock wool product is made up by using high-quality basalt and dolomite as main raw materials, and adopting four-shaft centrifugal machine to make high-speed centrifugation to form fibre after high-temp. melting at above 1450 deg.C, at the same time spraying a certain quantity of adhesive, dust-proofing oil and water-repellent agent, then collecting by cotton-collecting machine, utilizing pendulum process and three-dimensional method to lay cotton, then solidifying and cutting so as to form the rock wool products with different specifications and uses.
But the anti fracture performance and the anti deformation performance of traditional heat preservation rock wool board are relatively poor for the phenomenon of fracture and deformation appears easily in the heat preservation rock wool board when transportation and use, has improved the off-the-shelf spoilage of rock wool board, has increased the cost of construction.
Based on the above, the invention designs a heat preservation rock wool board with density gradient and a manufacturing method thereof, so as to solve the problems.
Disclosure of Invention
The invention aims to provide a heat-insulating rock wool board with a density gradient and a manufacturing method thereof, and aims to solve the problem that the traditional heat-insulating rock wool board provided in the background technology is poor in fracture resistance and deformation resistance, so that the heat-insulating rock wool board is easy to fracture and deform during transportation and use.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a heat preservation rock wool board with density gradient, the density of rock wool board distributes with middle density is little, the big mode of both sides density along thickness direction, and the density change to arbitrary one side in the middle of is gradient change, the rock wool board includes the raw materials of following weight component: 50-60 parts of basalt, 15-20 parts of quartz sand, 10-15 parts of iron ore, 10-15 parts of perlite, 10-25 parts of phenolic resin adhesive, 10-15 parts of silicon dioxide aerogel and 4-6 parts of water repellent.
Preferably, the phenolic resin adhesive is one of melamine-modified phenolic resin, urea-modified phenolic resin, lignin-modified phenolic resin, resorcinol-modified phenolic resin and polyvinyl acetal-modified phenolic resin.
Preferably, the water repellent consists of the following raw materials in parts by weight: 60-80 parts of polysiloxane emulsion with the solid content of 15-20 percent and 10-30 parts of silicone-acrylate emulsion with the solid content of 10-15 percent.
The invention also provides a manufacturing method of the heat-preservation rock wool board with the density gradient, which comprises the following steps:
step one, batching: mixing and crushing ore raw materials of the rock wool board according to 50-60 parts of basalt, 15-20 parts of quartz sand, 10-15 parts of iron ore and 10-15 parts of perlite, and then sieving to obtain ore powder;
step two, melting: adding the ore powder obtained in the step one into a cupola furnace to melt, and enabling a melt to flow out from a material flow port at the lower part of the cupola furnace;
step three, fiberization: leading the outflow melt into a centrifugal machine through a movable launder, drafting the melt into fibers under the combined action of the centrifugal force of a centrifugal roller and high-speed airflow sprayed by an outer wind ring enveloped in the centrifugal roller, and uniformly spraying a phenolic resin adhesive, silica aerogel and a water repellent on the fibers in the process of drafting into fibers;
step four, cotton collection: blowing the fibers onto a cotton collecting conveyor through high-speed airflow to form a very thin primary cotton layer, conveying the primary cotton layer into a pendulum bob machine through the conveyor, and forming at least two layers of folded cotton felts on a forming conveyor arranged at 90 degrees to the pendulum bob belt under the action of reciprocating swing of the pendulum bob belt;
step five, pressing: prepressing two cotton felts with different layers in the fourth step into preformed rock wool boards with the same thickness through a cotton pressing machine to obtain two preformed rock wool boards with different densities, stacking the two obtained preformed rock wool boards together in a mode that the density of the middle is small, the density of the two sides is large, and the density change of any side from the middle is in gradient change, and then pressing the stacked preformed rock wool boards by the cotton pressing machine to obtain a multilayer rock wool board;
step six, curing: conveying the multilayer rock wool boards to a curing furnace through a conveyor for curing;
step seven, cooling and forming: and (3) making the multilayer rock wool board discharged from the curing furnace through a transition section, a cooling section and a cutting section to obtain the heat-preservation rock wool board with density gradient.
Preferably, the mesh number of the screen in the screening process of the first step is 60-140 meshes.
Preferably, the furnace temperature of the cupola furnace in the step two in the melting process is 1500-1800 ℃.
Preferably, the centrifuge in the third step is a four-axis centrifuge, and the rotation speed of the centrifugal roller is 6200-8000 rpm.
Preferably, in the fifth step, the multi-layer rock wool board is pressurized by the upper and lower chain plates in the curing furnace, and hot air at the temperature of 220 ℃ and 250 ℃ is blown into the multi-layer rock wool board.
Preferably, the temperature of the first section in the transition section is 160 ℃, the temperature of the second section is 110 ℃ and the temperature of the third section is 70 ℃; the temperature in the cooling section was 20 ℃.
Compared with the prior art, the invention has the beneficial effects that: the invention folds a plurality of cotton felts with different layers by a pendulum machine, and pre-presses the cotton felts into the cotton felts with the same thickness, so that the density with more layers is larger, the density with less layers is smaller, then the cotton felts are stacked in a mode of small middle density and large density at two sides, and then the cotton felts are compounded together by pressing, so that the density of the rock wool board is distributed in a mode of small middle density and large density at two sides along the thickness direction, and the density change from the middle to any side is in gradient change.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Detailed Description
Technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the utility model provides a heat preservation rock wool board with density gradient, the density of rock wool board distributes with middle density is little, the big mode of both sides density along thickness direction, and the density change to arbitrary one side in the middle of is gradient change, and the rock wool board includes the raw materials of following weight component: 52 parts of basalt, 17 parts of quartz sand, 12 parts of iron ore, 11 parts of perlite, 13 parts of melamine modified phenolic resin adhesive, 12 parts of silicon dioxide aerogel and 5 parts of water repellent.
The water repellent consists of the following raw materials in parts by weight: 60 parts of polysiloxane emulsion with the solid content of 15 percent and 10 parts of silicone-acrylate emulsion with the solid content of 10 percent.
The manufacturing method of the heat preservation rock wool board with the density gradient comprises the following steps:
step one, batching: mixing and crushing mineral raw materials of the rock wool board according to 52 parts of basalt, 17 parts of quartz sand, 12 parts of iron ore and 11 parts of perlite, and sieving the mixture by using a 120-mesh sieve to obtain mineral powder;
step two, melting: adding the ore powder obtained in the step one into a cupola furnace to melt, wherein the temperature in the furnace is 1550 ℃, and the melt flows out from a material flow port at the lower part of the cupola furnace;
step three, fiberization: leading the outflow melt into a centrifugal machine through a movable launder, drafting the melt into fibers under the combined action of a centrifugal roller with the rotating speed of 6500pm and high-speed airflow sprayed by an air ring enveloping the centrifugal roller, and uniformly spraying 13 parts of melamine modified phenolic resin adhesive, 12 parts of silica aerogel and 2 parts of water repellent on the fibers in the process of drafting the melt into fibers;
step four, cotton collection: blowing the fibers in the third step onto a cotton collecting conveyor through high-speed airflow to form a very thin primary cotton layer, conveying the primary cotton layer into a pendulum bob machine through the conveyor, and forming two layers of folded cotton felts on a forming conveyor arranged at 90 degrees to the pendulum bob belt under the action of reciprocating swing of the pendulum bob belt, wherein the two layers of the folded cotton felts are 2 layers and 4 layers respectively;
step five, pressing: prepressing two layers of cotton felts in the fourth step into preformed rock wool boards with the same thickness through a cotton pressing machine to obtain two preformed rock wool boards with different densities, stacking the two obtained preformed rock wool boards together in a mode that the density of the middle is small, the density of the two sides is large, and the density change from the middle to any side is in gradient change, and then pressing the stacked preformed rock wool boards by the cotton pressing machine to obtain three layers of rock wool boards;
step six, curing: conveying the three layers of rock wool boards to a curing furnace through a conveyor for curing, pressurizing by an upper chain plate and a lower chain plate in the curing furnace, and simultaneously blowing 220 ℃ hot air into the three layers of rock wool boards;
step seven, cooling and forming: three layers of rock wool boards discharged from the curing furnace pass through a transition section, a cooling section and a cutting section, wherein the temperature of the first section is 160 ℃, the temperature of the second section is 110 ℃ and the temperature of the third section is 70 ℃; the temperature in the cooling section is 20 ℃, and the heat-preservation rock wool board with the density gradient is prepared.
Example 2: the utility model provides a heat preservation rock wool board with density gradient, the density of rock wool board distributes with middle density is little, the big mode of both sides density along thickness direction, and the density change to arbitrary one side in the middle of is gradient change, and the rock wool board includes the raw materials of following weight component: 53 parts of basalt, 14 parts of quartz sand, 15 parts of iron ore, 14 parts of perlite, 15 parts of urea modified phenolic resin adhesive, 14 parts of silicon dioxide aerogel and 4 parts of water repellent.
The water repellent consists of the following raw materials in parts by weight: 62 parts of polysiloxane emulsion with the solid content of 16 percent and 12 parts of silicone-acrylate emulsion with the solid content of 12 percent.
The manufacturing method of the heat preservation rock wool board with the density gradient comprises the following steps:
step one, batching: mixing and crushing the ore raw materials of the rock wool board according to 53 parts of basalt, 14 parts of quartz sand, 15 parts of iron ore and 14 parts of perlite, and sieving the mixture by using a 120-mesh sieve to obtain ore powder;
step two, melting: adding the ore powder obtained in the step one into a cupola furnace to melt, wherein the temperature in the cupola furnace is 1600 ℃, and a melt flows out from a material flow port at the lower part of the cupola furnace;
step three, fiberization: leading the outflow melt into a centrifugal machine through a movable launder, drafting the melt into fibers under the combined action of a centrifugal roller with the rotating speed of 6800rpm and high-speed airflow sprayed by an air ring enveloping the centrifugal roller, and uniformly spraying 15 parts of urea modified phenolic resin adhesive, 14 parts of silica aerogel and 4 parts of water repellent on the fibers in the process of drafting the fibers;
step four, cotton collection: blowing the fibers in the third step onto a cotton collecting conveyor through high-speed airflow to form a very thin primary cotton layer, conveying the primary cotton layer into a pendulum bob machine through the conveyor, and forming three layers of folded cotton felts on a forming conveyor arranged at 90 degrees with the pendulum bob belt under the action of reciprocating swing of the pendulum bob belt, wherein the layers of the folded cotton felts are 2 layers, 3 layers and 4 layers respectively;
step five, pressing: prepressing the cotton felts with three layers in the fourth step into preformed rock wool boards with the same thickness through a cotton pressing machine to obtain three preformed rock wool boards with different densities, stacking the three preformed rock wool boards together in a mode of small middle density and large density at two sides, and then pressing the stacked preformed rock wool boards by the cotton pressing machine to obtain five layers of rock wool boards;
step six, curing: conveying the five layers of rock wool boards to a curing furnace through a conveyor for curing, pressurizing by an upper chain plate and a lower chain plate in the curing furnace, and simultaneously blowing 230 ℃ hot air into the five layers of rock wool boards;
step seven, cooling and forming: five layers of rock wool boards discharged from the curing furnace pass through a transition section, a cooling section and a cutting section, wherein the temperature of the first section is 160 ℃, the temperature of the second section is 110 ℃ and the temperature of the third section is 70 ℃; the temperature in the cooling section is 20 ℃, and the heat-preservation rock wool board with the density gradient is prepared.
Example 3: the utility model provides a heat preservation rock wool board with density gradient, the density of rock wool board distributes with middle density is little, the big mode of both sides density along thickness direction, and the density change to arbitrary one side in the middle of is gradient change, and the rock wool board includes the raw materials of following weight component: 55 parts of basalt, 17 parts of quartz sand, 14 parts of iron ore, 10 parts of perlite, 18 parts of lignin modified phenolic resin adhesive, 11 parts of silicon dioxide aerogel and 6 parts of water repellent.
The water repellent consists of the following raw materials in parts by weight: 65 parts of polysiloxane emulsion with the solid content of 17 percent and 18 parts of silicone-acrylate emulsion with the solid content of 13 percent.
The manufacturing method of the heat preservation rock wool board with the density gradient comprises the following steps:
step one, batching: mixing and crushing mineral raw materials of the rock wool board according to 55 parts of basalt, 17 parts of quartz sand, 14 parts of iron ore and 10 parts of perlite, and sieving the mixture by using a 80-mesh sieve to obtain mineral powder;
step two, melting: adding the ore powder obtained in the step one into a cupola furnace to melt, wherein the temperature in the furnace is 1650 ℃, and the melt flows out from a material flow port at the lower part of the cupola furnace;
step three, fiberization: leading the outflow melt into a centrifugal machine through a movable launder, drafting the melt into fibers under the combined action of a centrifugal roller with the rotating speed of 7000rpm and high-speed airflow sprayed by a wind ring enveloping the centrifugal roller, and uniformly spraying 18 parts of lignin modified phenolic resin adhesive, 11 parts of silica aerogel and 6 parts of water repellent on the fibers in the process of drafting the melt into fibers;
step four, cotton collection: blowing the fibers in the third step onto a cotton collecting conveyor through high-speed airflow to form a very thin primary cotton layer, conveying the primary cotton layer into a pendulum bob machine through the conveyor, and forming four layers of folded cotton felts on a forming conveyor arranged at 90 degrees with the pendulum bob belt under the action of reciprocating swing of the pendulum bob belt, wherein the four layers of the folded cotton felts are 2 layers, 3 layers, 4 layers and 5 layers respectively;
step five, pressing: prepressing four layers of cotton felts in the fourth step into preformed rock wool boards with the same thickness through a cotton pressing machine to obtain four preformed rock wool boards with different densities, stacking the four preformed rock wool boards together in a mode that the density of the middle is small, the density of the two sides is large, and the density change from the middle to any side is in gradient change, and then pressing the stacked preformed rock wool boards by the cotton pressing machine to obtain seven layers of rock wool boards;
step six, curing: conveying the seven layers of rock wool boards to a curing furnace through a conveyor for curing, pressurizing by an upper chain plate and a lower chain plate in the curing furnace, and simultaneously blowing 240 ℃ hot air into the seven layers of rock wool boards;
step seven, cooling and forming: the seven-layer rock wool board discharged from the curing furnace passes through a transition section, a cooling section and a cutting section, wherein the temperature of the first section is 160 ℃, the temperature of the second section is 110 ℃ and the temperature of the third section is 70 ℃; the temperature in the cooling section is 20 ℃, and the heat-preservation rock wool board with the density gradient is prepared.
Example 4; the utility model provides a heat preservation rock wool board with density gradient, the density of rock wool board distributes with middle density is little, the big mode of both sides density along thickness direction, and the density change to arbitrary one side in the middle of is gradient change, and the rock wool board includes the raw materials of following weight component: 57 parts of basalt, 18 parts of quartz sand, 15 parts of iron ore, 15 parts of perlite, 20 parts of resorcinol modified phenolic resin adhesive, 14 parts of silicon dioxide aerogel and 5 parts of water repellent.
The water repellent consists of the following raw materials in parts by weight: 67 parts of polysiloxane emulsion with the solid content of 16 percent and 20 parts of silicone-acrylate emulsion with the solid content of 14 percent.
The manufacturing method of the heat preservation rock wool board with the density gradient comprises the following steps:
step one, batching: mixing and crushing ore raw materials of the rock wool board according to 57 parts of basalt, 18 parts of quartz sand, 15 parts of iron ore and 15 parts of perlite, and sieving the mixture by using a 70-mesh sieve to obtain ore powder;
step two, melting: adding the ore powder obtained in the step one into a cupola furnace for melting, wherein the temperature in the furnace is 1750 ℃, and a melt flows out from a material flow port at the lower part of the cupola furnace;
step three, fiberization: leading the outflow melt into a centrifugal machine through a movable launder, drafting the melt into fibers under the combined action of a centrifugal roller with the rotating speed of 7300rpm and high-speed airflow sprayed by an air ring enveloping the centrifugal roller, and uniformly spraying 20 parts of resorcinol modified phenolic resin adhesive, 14 parts of silica aerogel and 5 parts of water repellent on the fibers in the process of drafting the fibers;
step four, cotton collection: blowing the fibers in the third step onto a cotton collecting conveyor through high-speed airflow to form a very thin primary cotton layer, conveying the primary cotton layer into a pendulum bob machine through the conveyor, and forming three layers of folded cotton felts on a forming conveyor arranged at an angle of 90 degrees with the pendulum bob belt under the action of reciprocating swing of the pendulum bob belt, wherein the three layers of the folded cotton felts are 3 layers, 4 layers and 5 layers respectively;
step five, pressing: prepressing the cotton felts with three layers in the fourth step into preformed rock wool boards with the same thickness through a cotton pressing machine to obtain three preformed rock wool boards with different densities, stacking the three obtained preformed rock wool boards together in a mode that the density of the middle is small, the density of the two sides is large, and the density change from the middle to any side is in gradient change, and then pressing the stacked preformed rock wool boards by the cotton pressing machine to obtain five layers of rock wool boards;
step six, curing: conveying the five layers of rock wool boards to a curing furnace through a conveyor for curing, pressurizing by an upper chain plate and a lower chain plate in the curing furnace, and simultaneously blowing hot air of 250 ℃ into the five layers of rock wool boards;
step seven, cooling and forming: five layers of rock wool boards discharged from the curing furnace pass through a transition section, a cooling section and a cutting section, wherein the temperature of the first section is 160 ℃, the temperature of the second section is 110 ℃ and the temperature of the third section is 70 ℃; the temperature in the cooling section is 20 ℃, and the heat-preservation rock wool board with the density gradient is prepared.
Example 5: the utility model provides a heat preservation rock wool board with density gradient, the density of rock wool board distributes with middle density is little, the big mode of both sides density along thickness direction, and the density change to arbitrary one side in the middle of is gradient change, and the rock wool board includes the raw materials of following weight component: 57 parts of basalt, 18 parts of quartz sand, 13 parts of iron ore, 14 parts of perlite, 22 parts of polyvinyl acetal modified phenolic resin adhesive, 13 parts of silicon dioxide aerogel and 6 parts of water repellent.
The water repellent consists of the following raw materials in parts by weight: 73 parts of polysiloxane emulsion with the solid content of 20 percent and 25 parts of silicone-acrylate emulsion with the solid content of 15 percent.
The manufacturing method of the heat preservation rock wool board with the density gradient comprises the following steps:
step one, batching: mixing and crushing ore raw materials of the rock wool board according to 57 parts of basalt, 18 parts of quartz sand, 13 parts of iron ore and 14 parts of perlite, and sieving the mixture by using a 100-mesh sieve to obtain ore powder;
step two, melting: adding the ore powder obtained in the step one into a cupola furnace to melt, wherein the temperature in the furnace is 1800 ℃, and a melt flows out from a material flow port at the lower part of the cupola furnace;
step three, fiberization: leading the outflow melt into a centrifugal machine through a movable launder, drafting the melt into fibers under the combined action of a centrifugal roller with the rotating speed of 7600rpm and high-speed airflow sprayed by an air ring enveloping the centrifugal roller, and uniformly spraying 22 parts of polyvinyl acetal modified phenolic resin adhesive, 13 parts of silica aerogel and 6 parts of water repellent on the fibers in the process of drafting the fibers;
step four, cotton collection: blowing the fibers in the third step onto a cotton collecting conveyor through high-speed airflow to form a very thin primary cotton layer, conveying the primary cotton layer into a pendulum bob machine through the conveyor, and forming two layers of folded cotton felts on a forming conveyor arranged at 90 degrees to the pendulum bob belt under the action of reciprocating swing of the pendulum bob belt, wherein the two layers of the folded cotton felts are 3 layers and 5 layers respectively;
step five, pressing: prepressing two layers of cotton felts in the fourth step into preformed rock wool boards with the same thickness through a cotton pressing machine to obtain two preformed rock wool boards with different densities, stacking the two obtained preformed rock wool boards together in a mode that the density of the middle is small, the density of the two sides is large, and the density change from the middle to any side is in gradient change, and then pressing the stacked preformed rock wool boards by the cotton pressing machine to obtain three layers of rock wool boards;
step six, curing: conveying the three-layer rock wool boards to a curing furnace through a conveyor for curing, pressurizing by an upper chain plate and a lower chain plate in the curing furnace, and simultaneously blowing 230 ℃ hot air into the three-layer rock wool boards;
step seven, cooling and forming: three layers of rock wool boards discharged from the curing furnace pass through a transition section, a cooling section and a cutting section, wherein the temperature of the first section is 160 ℃, the temperature of the second section is 110 ℃ and the temperature of the third section is 70 ℃; the temperature in the cooling section is 20 ℃, and the heat-preservation rock wool board with the density gradient is prepared.
And (3) performance testing: the test samples 1, 2, 3, 4 and 5 with the width of 50mm and the length of 300mm were respectively cut from the heat-insulating rock wool boards with the density gradients prepared in the examples 1 to 5, the comparative samples 1 to 5 with the average density of the heat-insulating rock wool boards prepared in the examples were prepared, the sampling size was the same as that of the corresponding test sample, and the test samples and the comparative samples were tested under the same conditions by an RGD3002 microcomputer-controlled electronic universal tester.
Table 1 shows the results of the mirror bending strength and elastic modulus measurements of the test samples 1 to 5 and the comparative samples 1 to 5
| Sample (I) | Static bending strength (MPa) | Modulus of elasticity (MPa) |
| Test sample 1 | 35.2 | 4283 |
| Comparative sample 1 | 32.7 | 3755 |
| Test sample 2 | 36.4 | 4423 |
| Comparative sample 2 | 33.6 | 3976 |
| Test sample 3 | 39.3 | 4895 |
| Comparative sample 3 | 35.8 | 4301 |
| Test sample 4 | 37.1 | 4287 |
| Comparative sample 4 | 34.5 | 3876 |
| Test sample 5 | 35.2 | 4227 |
| Comparative sample 5 | 32.5 | 3638 |
According to the table, the rock wool board with good fracture resistance and deformation resistance is prepared under the condition of the same materials.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. The utility model provides a heat preservation rock wool board with density gradient which characterized in that, the density of rock wool board distributes with middle density is little, the big mode of both sides density along thickness direction, and the density change to arbitrary one side in the middle of is gradient change, the rock wool board includes the raw materials of following weight component: 50-60 parts of basalt, 15-20 parts of quartz sand, 10-15 parts of iron ore, 10-15 parts of perlite, 10-25 parts of phenolic resin adhesive, 10-15 parts of silicon dioxide aerogel and 4-6 parts of water repellent.
2. The insulating rock wool board with density gradient of claim 1, wherein: the phenolic resin adhesive is one of melamine modified phenolic resin, urea modified phenolic resin, lignin modified phenolic resin, resorcinol modified phenolic resin and polyvinyl acetal modified phenolic resin.
3. The insulating rock wool board with density gradient of claim 1, wherein: the water repellent consists of the following raw materials in parts by weight: 60-80 parts of polysiloxane emulsion with the solid content of 15-20 percent and 10-30 parts of silicone-acrylate emulsion with the solid content of 10-15 percent.
4. The method for manufacturing the heat-preservation rock wool board with the density gradient according to claim 1, wherein the method comprises the following steps: the method comprises the following steps:
step one, batching: mixing and crushing ore raw materials of the rock wool board according to 50-60 parts of basalt, 15-20 parts of quartz sand, 10-15 parts of iron ore and 10-15 parts of perlite, and then sieving to obtain ore powder;
step two, melting: adding the ore powder obtained in the step one into a cupola furnace to melt, and enabling a melt to flow out from a material flow port at the lower part of the cupola furnace;
step three, fiberization: leading the outflow melt into a centrifugal machine through a movable launder, drafting the melt into fibers under the combined action of the centrifugal force of a centrifugal roller and high-speed airflow sprayed by an outer wind ring enveloped in the centrifugal roller, and uniformly spraying a phenolic resin adhesive, silica aerogel and a water repellent on the fibers in the process of drafting into fibers;
step four, cotton collection: blowing the fibers onto a cotton collecting conveyor through high-speed airflow to form a very thin primary cotton layer, conveying the primary cotton layer into a pendulum bob machine through the conveyor, and forming at least two layers of folded cotton felts on a forming conveyor arranged at 90 degrees to the pendulum bob belt under the action of reciprocating swing of the pendulum bob belt;
step five, pressing: prepressing two cotton felts with different layers in the fourth step into preformed rock wool boards with the same thickness through a cotton pressing machine to obtain two preformed rock wool boards with different densities, stacking the two obtained preformed rock wool boards together in a mode that the density of the middle is small, the density of the two sides is large, and the density change of any side from the middle is in gradient change, and then pressing the stacked preformed rock wool boards by the cotton pressing machine to obtain a multilayer rock wool board;
step six, curing: conveying the multilayer rock wool boards to a curing furnace through a conveyor for curing;
step seven, cooling and forming: and (3) making the multilayer rock wool board discharged from the curing furnace through a transition section, a cooling section and a cutting section to obtain the heat-preservation rock wool board with density gradient.
5. The method for manufacturing the heat-preservation rock wool board with the density gradient as recited in claim 4, wherein the method comprises the following steps: the mesh number of the screen in the screening process in the first step is 60-140 meshes.
6. The method for manufacturing the heat-preservation rock wool board with the density gradient as recited in claim 4, wherein the method comprises the following steps: the furnace temperature of the cupola furnace in the step two in the melting process is 1500-.
7. The method for manufacturing the heat-preservation rock wool board with the density gradient as recited in claim 4, wherein the method comprises the following steps: the centrifugal machine in the third step is a four-shaft centrifugal machine, and the rotating speed of the centrifugal roller is 6200-8000 rpm.
8. The method for manufacturing the heat-preservation rock wool board with the density gradient as recited in claim 4, wherein the method comprises the following steps: and in the step five, the multilayer rock wool boards are pressurized by the upper chain plate and the lower chain plate in the curing furnace, and hot air at the temperature of 220 ℃ and 250 ℃ is blown into the multilayer rock wool boards.
9. The method for manufacturing the heat-preservation rock wool board with the density gradient as recited in claim 4, wherein the method comprises the following steps: the temperature of the first section in the transition section is 160 ℃, the temperature of the second section is 110 ℃, and the temperature of the third section is 70 ℃; the temperature in the cooling section was 20 ℃.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113845316A (en) * | 2021-11-08 | 2021-12-28 | 天长市康美达新型绝热材料有限公司 | Fire-retardant rock wool strip for naval vessel |
| CN114750443A (en) * | 2022-03-29 | 2022-07-15 | 南京玻璃纤维研究设计院有限公司 | Production method and production equipment of double-density rock wool board |
| CN115448646A (en) * | 2022-11-04 | 2022-12-09 | 华能中天节能科技集团有限责任公司 | Fireproof outer wall hydrophobic rock wool board and preparation method thereof |
| CN115557733A (en) * | 2022-11-23 | 2023-01-03 | 普莱斯德集团股份有限公司 | Fireproof rock wool heat-insulation decorative plate and preparation method thereof |
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2019
- 2019-07-19 CN CN201910652541.5A patent/CN112239922A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113845316A (en) * | 2021-11-08 | 2021-12-28 | 天长市康美达新型绝热材料有限公司 | Fire-retardant rock wool strip for naval vessel |
| CN114750443A (en) * | 2022-03-29 | 2022-07-15 | 南京玻璃纤维研究设计院有限公司 | Production method and production equipment of double-density rock wool board |
| CN115448646A (en) * | 2022-11-04 | 2022-12-09 | 华能中天节能科技集团有限责任公司 | Fireproof outer wall hydrophobic rock wool board and preparation method thereof |
| CN115557733A (en) * | 2022-11-23 | 2023-01-03 | 普莱斯德集团股份有限公司 | Fireproof rock wool heat-insulation decorative plate and preparation method thereof |
| CN115557733B (en) * | 2022-11-23 | 2023-03-03 | 普莱斯德集团股份有限公司 | Fireproof rock wool heat-insulation decorative plate and preparation method thereof |
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