CN112031185B - Reverse beating structure suitable for assembly type building outer wall - Google Patents
Reverse beating structure suitable for assembly type building outer wall Download PDFInfo
- Publication number
- CN112031185B CN112031185B CN202010566918.8A CN202010566918A CN112031185B CN 112031185 B CN112031185 B CN 112031185B CN 202010566918 A CN202010566918 A CN 202010566918A CN 112031185 B CN112031185 B CN 112031185B
- Authority
- CN
- China
- Prior art keywords
- curing
- air outlet
- microwave
- power
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010009 beating Methods 0.000 title claims abstract description 34
- 238000009413 insulation Methods 0.000 claims abstract description 70
- 239000005011 phenolic resin Substances 0.000 claims abstract description 48
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 45
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 30
- 230000008569 process Effects 0.000 claims abstract description 25
- 239000012784 inorganic fiber Substances 0.000 claims abstract description 24
- 238000001723 curing Methods 0.000 claims description 79
- 239000000463 material Substances 0.000 claims description 54
- 238000011415 microwave curing Methods 0.000 claims description 38
- 238000004519 manufacturing process Methods 0.000 claims description 35
- 239000003365 glass fiber Substances 0.000 claims description 33
- 239000007921 spray Substances 0.000 claims description 31
- 238000005507 spraying Methods 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 21
- 239000003513 alkali Substances 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 11
- 238000009826 distribution Methods 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000012805 post-processing Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002748 Basalt fiber Polymers 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000009933 burial Methods 0.000 claims 1
- 238000004891 communication Methods 0.000 claims 1
- 238000005192 partition Methods 0.000 claims 1
- 230000007306 turnover Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 4
- 239000012774 insulation material Substances 0.000 abstract description 4
- 238000012827 research and development Methods 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 32
- 239000000047 product Substances 0.000 description 22
- 229920005989 resin Polymers 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- 238000004321 preservation Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000004568 cement Substances 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000011490 mineral wool Substances 0.000 description 6
- 238000011160 research Methods 0.000 description 6
- 239000002912 waste gas Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000009960 carding Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000013007 heat curing Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000010923 batch production Methods 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011491 glass wool Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- -1 magnesium nitride Chemical class 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229920002121 Hydroxyl-terminated polybutadiene Polymers 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910021418 black silicon Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 229920003987 resole Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- 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
- E04B1/762—Exterior insulation of exterior walls
- E04B1/7629—Details of the mechanical connection of the insulation to the wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
- B28B19/0015—Machines or methods for applying the material to surfaces to form a permanent layer thereon on multilayered articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Manufacturing & Machinery (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
The invention provides a reverse-hitting structure suitable for an outer wall of an assembly type building, which comprises a heat insulation board, a cover layer and an L-shaped embedded part, wherein the cover layer is sleeved on the outer board surface of the heat insulation board to seal all board surfaces except the inner board surface of the heat insulation board, the L-shaped embedded part comprises an inner arm and an outer arm which are intersected, the length of the outer arm is larger than the thickness of the heat insulation board, the outer arm is vertical to the thickness direction of the heat insulation board and is tightly attached to the outer wall surface of the cover layer, one end of the inner arm faces to the inner side of the heat insulation board, the free end of the inner arm faces to the center of the heat insulation board, and the heat insulation board, the cover layer and the L-shaped embedded part are connected into a whole through a connecting piece which penetrates through the L-shaped embedded part. The insulation board comprises 100 parts of inorganic fibers and 1-13 parts of phenolic resin. The invention starts from two aspects of structural design and research and development of new fireproof heat-insulation materials, enables the structure of the reverse beating structure to be simple and the outer wall to be convenient to process through reasonable structural layout, and greatly improves the fireproof, isolation and anti-pulling performances by combining with the novel heat-insulation materials.
Description
Technical Field
The invention belongs to the field of novel assembly type buildings, and particularly relates to a reverse beating structure suitable for an outer wall of an assembly type building.
Background
Along with the development of the building industry, the novel assembly type building effectively ensures the product quality due to factory customized production, avoids the potential safety hazard of site construction human factors, and becomes a building form widely popularized by China. The reverse-beating structure for common building walls in the market at present is mostly a sandwich structure of traditional organic heat-insulating materials, or a rock wool additional installation structure, and although the reverse-beating structure has benefits, the defects are obvious. The sandwich structure made of the organic heat-insulating material, the upper layer and the lower layer are made of cement, the core layer is made of the organic heat-insulating material, the service life of the material is far shorter than that of the cement material due to the characteristics of the organic heat-insulating material, the material is bound to age after being used for more than ten years, and the organic core material is changed into a hollow wall, so that potential safety hazards are brought to lives and properties. The rock wool material is low in strength, and a sandwich structure is formed by using the porous cement plate below the calcium silicate plate on the rock wool material, so that the complexity and the cost of construction are increased.
The reverse-beating structure can be used for preparing an external wall of an assembly type building after cement is poured, and the reverse-beating structure also has fireproof and heat-insulating properties based on fireproof and heat-insulating requirements on the external wall. The heat-insulating board in the reverse hitting structure can be used as a combustion material when the fireproof performance is insufficient, the spread of fire is further promoted, and the heat and toxic smoke generated by combustion are the main reasons for causing injury and death. Simultaneously, the structure of beating conversely is located the outside of outer wall, need can experience the environmental test that reaches decades or even hundred years for a long time, avoids appearing falling and hurts people's incident, and this one side needs high construction quality to require, and on the other hand then needs the structure of beating conversely to have higher pull-out strength, and its inside heated board has higher vertical face tensile strength.
In view of the above problems, there is a need to develop a reverse-beating structure suitable for an exterior wall of an assembly type building, which has the advantages of heat preservation, fire prevention, non-toxicity, and high drawing strength, so as to solve at least one of the above problems.
Disclosure of Invention
In order to overcome the defects in the prior art, the inventor of the invention carries out intensive research and provides a reverse beating structure suitable for an outer wall of an assembly type building.
The technical scheme provided by the invention is as follows:
a reverse hitting structure suitable for an outer wall of an assembly type building comprises a heat insulation board, a cover layer and an L-shaped embedded part, wherein the cover layer is of a shell structure and is sleeved on an outer board surface of the heat insulation board to seal all board surfaces except the inner board surface of the heat insulation board; the free end of the inner arm faces the center of the heat insulation plate, and the heat insulation plate, the cover layer and the L-shaped embedded part are connected into a whole through a connecting piece penetrated outside the L-shaped embedded part.
According to the reverse beating structure suitable for the outer wall of the fabricated building, the invention has the following beneficial effects:
(1) according to the invention, the reverse beating structure is breakthroughly cured twice, and finally a new material which is peroxidized and has a densified layer such as black silicon oxide, magnesium nitride, aluminum nitride and the like on the surface is obtained, so that the strength of the product is greatly improved, and the high-strength requirement of the reverse beating structure of the assembly type building is met;
(2) the reverse beating structure has the same strength and the same service life as the wall body, and the surface of the cover layer can be conveniently sprayed with a decorative layer in a factory, so that the influence of factors such as weather, worker industry level and the like on site construction is avoided, and the attractiveness of the outer wall is ensured;
(3) the invention has the advantages that the structure is reversely arranged, the safety reaches AQZ2 grade on the basis of ensuring A grade fire prevention, the high-efficiency heat-insulation performance is realized, the volume weight is high, the structural strength is good, the mechanical property is far higher than the national standard, and the problems of low strength and easy falling of other materials are solved;
(4) the production process of the insulation board with the reverse beating structure solves the problems that the low-heat-conduction material is heated by using a traditional heat source and the efficiency is very low, and adopts a microwave heating mode, microwave penetrating fibers directly act on water-soluble thermosetting resin, so that the energy utilization rate is greatly improved, the energy consumption is reduced, the curing period of a composite material is shortened, the curing pressure is removed, the curing temperature is reduced, the cost is reduced, the mass and flow line production is possible and realized, and the problem of batch production of novel insulation boards is solved;
(5) the production process of the heat-insulation board with the reverse beating structure completes one-time curing at about 110 ℃ in equipment, changes the limitation that the heating condition needs to reach 200 ℃ in the prior art and the temperature of certain resin needs to be 260 ℃ or even 300 ℃;
(6) the production process of the reverse beating structure insulation board of the invention has the advantages that one-time curing is completed under a non-contact condition, the limitation that materials need to be pressurized and cured in the past is changed, and various organic curing agents which can be burned to be toxic and other auxiliary agents are removed;
(7) the production process of the heat-insulation board with the reverse beating structure is different from the pipeline type spraying process in the prior art in research and development, the storage tank, the servo pipe and the spraying pipe are combined, the spraying process is ensured to be continuous, and the spraying uniformity is high;
(8) the production process of the heat-insulation board with the inverted structure improves the existing RTO incinerator, solves the problem that accumulated water blocks a waste gas pipeline so that continuous and stable hot air compensation cannot be completely met, and ensures continuous and stable production of a production line.
Drawings
FIG. 1 shows a schematic representation of the backhander of the present invention;
FIG. 2 is a schematic view of a fabricated exterior wall structure prepared by the reverse-beating structure of the present invention;
FIG. 3 is a block diagram of a spray assembly according to a preferred embodiment of the present invention, wherein FIG. 3a is a front view of a spray pipe; FIG. 3b is a cross-sectional view taken along line A-A of FIG. 3 a; FIG. 3c is a side view of the shower; FIG. 3d is a cross-sectional view taken along line B-B of FIG. 3 c;
FIG. 4 is a structural view of a microwave curing apparatus according to a preferred embodiment of the present invention;
FIG. 5 is a schematic view showing the structure of an RTO incinerator in a preferred embodiment of the present invention.
Description of the reference numerals
1-heat insulation board, 2-cover layer, 3-L-shaped embedded part, 31-inner arm, 32-outer arm, 101-magnetron, 102-air outlet, 103-hot air inlet, 104-press roller, 201-conveyor belt, 202-gear, 203-supporting roller, 301-waste gas inlet, 302-waste gas pipeline, 303-regenerator, 304-furnace chamber, 305-drain pipe.
Detailed Description
The features and advantages of the present invention will become more apparent and appreciated from the following detailed description of the invention.
The invention provides a reverse hitting structure suitable for an outer wall of an assembly type building, as shown in figure 1, the reverse hitting structure comprises a heat insulation board 1, a cover layer 2 and an L-shaped embedded part 3, wherein the cover layer 2 is of a (rectangular) shell structure and is sleeved on the outer board surface of the heat insulation board 1 to seal all board surfaces except the inner board surface of the heat insulation board, the L-shaped embedded part 3 comprises an inner arm 31 and an outer arm 32 which are intersected, the length of the outer arm 32 is greater than the thickness of the heat insulation board 1, the outer arm 32 is perpendicular to the thickness direction of the heat insulation board 1 and is tightly attached to the outer wall surface of the cover layer 2, and one end of the inner arm 31 is connected to the inner side of the heat insulation board 1; the free end of the inner arm 31 faces the center of the insulation board, and the insulation board 1, the cover layer 2 and the L-shaped embedded part 3 are connected into a whole through a connecting piece such as a rivet penetrated from the outside of the L-shaped embedded part 3.
In the invention, as shown in fig. 2, after cement is poured on the inner side of the heat insulation board 1, an assembled outer wall can be formed, the inner arm 31 of the L-shaped embedded part 3 is inserted into the cement, the bonding strength between the reverse beating structure and the cement wall can be improved, the drawing strength of the vertical board surface is high, and the reverse beating structure can be taken down from the cement wall only when the cement wall is crushed.
In the invention, the thickness of the insulation board 1 can be larger than, smaller than or equal to the thickness of the inner cavity of the cover layer 2, and is preferably not larger than the thickness of the inner cavity of the cover layer 2. The heat-insulation board 1 is a plate with fireproof and heat-insulation properties; the cover layer 2 is a metal plate which can not be burnt, such as an aluminum-zinc-plated steel plate, the surface of the cover layer 2 can be provided with decorative paint, the decorative paint can be prepared in a factory according to the requirements of customers, and the decorative paint is sprayed on the surface of the metal plate on a production line, so that the factors that the paint is influenced by weather during field construction are avoided, and the service life of the paint and the richness of color selection are ensured.
In the invention, a bi-component polyurethane adhesive is coated between the heat-insulating board 1 and the cover layer 2 to further fixedly connect the two.
In a preferred embodiment of the invention, the included angle between the inner arm 31 and the outer arm 32 of the L-shaped embedded part 3 is not more than 90 degrees, and preferably, the inner arm 31 and the outer arm 32 of the L-shaped embedded part 3 are vertical and the included angle is 90 degrees.
The inventor considers the defects of the existing heat-preservation fireproof materials such as rock wool (structural strength is weaker, heat preservation performance is general, the production and manufacturing process belongs to high pollution), improves the reverse beating structure from the structure, researches and develops the heat-preservation plate adopted in the reverse beating structure, and provides the novel heat-preservation plate with heat-preservation fireproof performance, high vertical plate surface tensile strength and production process environmental protection. Specifically, the novel heat-insulation plate comprises the following components in parts by mass:
100 parts of inorganic fiber;
1-13 parts of phenolic resin, preferably 1-6 parts;
wherein, the inorganic fiber is selected from any one or the combination of alkali-free glass fiber or basalt fiber;
the raw material of the phenolic resin is water-soluble phenolic resin, and the water-soluble phenolic resin belongs to thermosetting resol resin. The selection of the water-soluble phenolic resin avoids the selection of an organic solvent such as ethanol for dissolving the phenolic resin in the production, reduces the concentration of organic matters in the air of a factory building, and improves the production safety. The form of the substance converted from the phenolic resin in the insulation board is considered to belong to the phenolic resin.
In the invention, the insulation board for the reverse beating structure is subjected to two times of heat curing in the preparation process instead of the conventional one-time heat curing when the insulation board is used in other application aspects, and compared with the insulation board prepared by the conventional one-time heat curing, the final content of phenolic resin in the two-time heat curing insulation board is lower. The phenolic resin is uniformly coated on the surface of the fiber and exists at the lap joint of the inorganic fiber, so that the inorganic fiber is bonded to form a three-dimensional porous whole. The mechanical properties (compression strength, vertical plate surface tensile strength and impact resistance) of the insulation board are stronger within the content range of the phenolic resin, if the content of the phenolic resin is higher than the maximum value of the range, the corresponding mechanical properties are reduced, the composite material becomes brittle, and the grade A fire resistance cannot be achieved.
In a preferred embodiment of the present invention, the inorganic fibers are glass fibers and are a combination of alkali-free glass fibers and medium-alkali glass fibers, and the mass ratio of the alkali-free glass fibers to the medium-alkali glass fibers is 1:1 to 1:3, preferably 1:2 to 1: 3. The heat preservation performance and the tensile strength of the vertical plate surface are optimal when the glass fiber is the alkali-free glass fiber, however, the alkali-free glass fiber is extremely high in cost, and is generally used for manufacturing electronic products, and is used for mass production of heat preservation plates, which are not beneficial to product popularization and application, so that the medium alkali glass fiber with lower cost is properly added during production line manufacturing, the using amount of the medium alkali glass fiber is higher and higher than the range, the finally prepared heat preservation plate can generate the condition of surface spots, the appearance has defects, and if the using amount of the medium alkali glass fiber is continuously increased, the heat preservation performance and the tensile strength of the vertical plate surface of the final product are affected.
Furthermore, the alkali-free glass fiber is made of the alkali-free glass fiber leftover material (also called as cutter wire) for producing the circuit board, so that the solid waste is solved, the environment is protected, and the cost is extremely low.
In a preferred embodiment of the present invention, the inorganic fiber is a chopped fiber, and the filament diameter is 5 to 20 μm, preferably 5 to 10 μm; the length is 50-75 mm, and the preferred length error is 5mm, guarantees the length homogeneity. The research shows that the wire diameter of the inorganic fiber is relatively related to the thermal insulation performance and the mechanical property of the thermal insulation board, and the thermal insulation board has low thermal conductivity and higher tensile strength of a vertical board surface within the range; the silk diameter is lower than the minimum value of the range, so that the requirements on raw materials are strict and the industrialization is difficult; if the diameter of the wire is too large and is higher than the maximum value of the range, the heat insulation performance and the mechanical property of the heat insulation board are obviously reduced. Further research also finds that the length uniformity of the inorganic fibers is crucial to the smooth development of the process, and if the length uniformity of the inorganic fibers is poor, cotton jamming of a carding machine is easily caused in a fiber carding process, which is more prominent when large-volume-weight insulation boards are produced.
In a preferred embodiment of the invention, other coupling agents (such as silane coupling agents KH 550/KH 570/A171/A151, zirconate, borate and the like) or curing agents (such as hydroxyl-terminated polybutadiene, m-phenylenediamine, tetra-amino trimethyl cyclohexyl methane and the like) for improving the bonding force between the components are not required to be added into the insulation board.
In the invention, water-soluble phenolic resin is selected as a raw material of the phenolic resin, the viscosity of the water-soluble phenolic resin at 25 ℃ is 10-13 cp, the solid content is 30-49 wt%, and the pH is 8.0-10.0, wherein the solid content reflects the amount of phenolic resin polymer obtained by phenolic polycondensation to a certain extent. When the insulation board is prepared, the water-soluble phenolic resin is preferably adhered to the surface of the inorganic fiber in a spraying mode, and if the viscosity is too high and is higher than the range, the water-soluble phenolic resin is high in condensation speed and not beneficial to spraying and uniform distribution on the surface of the inorganic fiber; if the viscosity is too low and is lower than the above range, the curing process takes a long time and the amount of the phenolic resin distributed on the inorganic fibers may be too low. If the solid content is too high and is higher than the range, the content of the phenolic resin in the insulation board is high, so that the fireproof performance is not ensured; if the solid content is too low and is lower than the range, a large amount of water-soluble phenolic resin needs to be added, and because the speed of the conveyor belt under fixed capacity has upper and lower limit requirements, the adoption of a faster conveyor belt speed can cause that the amount of the phenolic resin distributed on the inorganic fibers is too low and the mechanical property is poor; when the low conveyor speed or the conveyor speed lower than the lower limit requirement is adopted to meet the requirement of the content of the phenolic resin, the curing process consumes long time, the energy consumption is increased and the process control difficulty is increased.
According to the invention, the authoritative institution verifies that the thermal insulation board has low thermal conductivity coefficient, is a high-efficiency building energy-saving thermal insulation material, and has the thermal conductivity coefficient as low as 0.026-0.032W/(m.K); the surface of the insulation board generates a compact carbonization layer after secondary curing, so that air circulation is reduced, and the insulation performance is improved;
the tensile strength of the vertical plate surface of the heat-insulation plate can reach more than 0.5MPa, which is far higher than the national standard (0.015MPa), and the problems of low strength and easy falling of other materials are solved;
the heat-insulating board meets the standards of A1-grade non-combustible materials and AQ 2-grade non-toxic materials.
The invention also provides a preparation process of the novel insulation board, which comprises the working procedures of feeding, unpacking, opening, carding, lapping, needling, conveying, spraying, primary curing, secondary curing and post-treatment (such as cutting), wherein the spraying adopts pipeline spraying, and the primary curing adopts a microwave curing mode.
In the spraying process of the present invention, the water-soluble phenol resin is sprayed and distributed on the inorganic fibers. The traditional process mode is an impregnation method or a shower head type, but the impregnation method needs a large amount of solvent to bring solute into fibers, the large amount of solvent needs a large amount of energy to remove, and the energy consumption is extremely high, while the shower head type is not suitable for flow line production and can not uniformly spray resin on the surfaces of the fibers; thus, the present inventors have conducted extensive studies to confirm that the inline spraying is applied to inorganic fibers on a conveyor belt of a production line, and have provided an inline spraying apparatus suitable for production in the production line.
In the invention, as shown in fig. 3, the pipeline type spraying device comprises a storage tank, a servo pipe and a spraying pipe, wherein the storage tank is filled with water-soluble phenolic resin and is conveyed to the spraying pipe through the servo pipe, wherein,
the spray pipe is a conical pipe, and the preferred cone angle is 0.2-0.5 degrees; spraying holes with the diameter of 1-2 mm are formed in the spraying pipe at intervals of 2-4 cm, and the spraying holes are preferably located on the same straight line. The shape of the spray pipe, the design of the opening gap and the spray holes are related to the viscosity of the water-soluble phenolic resin, and in the conical pipe, the aperture can improve the adhesion rate of the resin on the inorganic fiber and the uniformity of the resin distribution on the premise of reducing the blockage of the spray holes by the water-soluble phenolic resin; if the diameter of the spray holes is small and is less than the minimum value of the above range, the water-soluble phenol resin of viscosity in the present invention easily blocks the spray holes; if the diameter of the shower hole is large and is higher than the maximum value of the above range, the sprayed resin droplets are large and the resin is hard to adhere to the inorganic fibers. If the pore-opening gap is too small and is lower than the minimum value of the range, the resin spraying amount per unit area is obviously increased, and the gel content of the product exceeds the standard; if the hole gap is too large and is higher than the maximum value of the above range, the spray uniformity is not high. For the shape of the spray pipe, a conical pipe, particularly the conical pipe with the taper is adopted, the spray holes on the spray pipe can be designed into through holes with the same size, if a round pipe with the consistent cross section is adopted, the size of the spray holes needs to be adjusted section by section in the conveying direction, and the design and processing of the spray pipe are more complicated.
In the invention, the spray pipe is made of polymer materials such as polyvinyl chloride (PVC) and the like, and metal materials are not selected. Burrs cannot be generated on the hole wall after the polymer material pipe is mechanically punched, burrs can be generated on the hole wall after the metal pipe is mechanically punched, and then the spraying hole is blocked by hanging glue.
Furthermore, the spray pipe is fixed on the rigid retaining piece, the material conveying belt is positioned below the spray pipe, the spray holes of the spray pipe face downwards, and the spray pipe sprays to the materials in the material conveying process. The rigid retaining piece is bundled with the spray pipe to keep the shape of the spray pipe, so that the uniformity and the fluency of spraying are ensured, and the problems of product quality caused by blockage of a spray opening of the pipe, inconsistent spray flow and the like are avoided.
In the invention, a heating device is arranged in the storage tank, and the temperature of the water-soluble phenolic resin in the storage tank is kept within the temperature range with the highest activity, such as 35-45 ℃.
Further, a stirring device is arranged in the storage tank, so that the state of the water-soluble phenolic resin in the storage tank is kept uniform, and no precipitate is generated.
In the invention, the servo pipe is externally wrapped with the heat-insulating layer so as to be beneficial to heat insulation and flow of materials in the servo pipe.
The inventor of the present invention has found through a great deal of research that the current curing process is implemented by a conventional heating furnace or a drying room, however, the above method is not suitable for curing the low thermal conductivity insulation board of the present invention, otherwise the following problems occur:
(i) the heat conductivity coefficient of the material is very low, the heat is transferred from outside to inside very slowly, and the curing period is very long;
(ii) because the heat transfer is very slow, the temperature gradient occurs in the material, so that the curing is uneven, the layering is easy to occur and the performance is unstable;
(iii) the product is warped due to the internal temperature gradient, and the flatness is unqualified;
(iv) the loss of heat caused by (i) is large, which causes energy loss;
(v) due to (i), the production efficiency is low if the curing period is long, and the requirement of large-scale mass production cannot be met.
Therefore, the inventor of the invention carries out a great deal of research on the one-time curing process, realizes the rapid curing of the low-thermal-conductivity material by improving the curing device as microwave curing equipment, the product can be stably produced in batches, and the heat-insulating property and the mechanical property of the obtained product are far higher than the national standard. Meanwhile, the microwave curing equipment activates polar molecules of the water-soluble phenolic resin by microwaves, and the polar molecules vibrate at a high speed, so that the activity of the molecules is greatly excited, and the once-cured insulation board with stable mechanical property can be obtained without adding other coupling agents or curing agents for improving the binding force among the components.
The microwave curing equipment comprises a microwave unit, a conveyor belt unit and an air outlet system, wherein the microwave unit is provided with a cavity structure, the conveyor belt unit bears materials sprayed with water-soluble phenolic resin and enters the cavity of the microwave unit, and the microwave unit heats and cures the phenolic resin by microwaves. Specifically, the heating element of the microwave unit is a magnetron 101, and the magnetron 101 is installed at the top of the inner cavity of the microwave unit and is used for microwave heating of the material passing below the magnetron 101.
As shown in fig. 4, the microwave unit is divided into a preheating zone, a curing zone and a post-treatment zone, wherein the magnetron power in the preheating zone accounts for 2/5-3/5 (preferably 1/2) of the total power, the magnetron power in the curing zone accounts for 3/10-1/2 (preferably 2/5) of the total power, and the magnetron power in the post-treatment zone accounts for 1/10 of the total power; wherein, the preheating zone plays a role of drying materials, heating the inorganic fiber and the water-soluble phenolic resin, and evaporating water vapor; in the curing area, the phenolic resin coated among the inorganic fibers realizes adhesion and curing, and the surface of the material has viscosity; the post-treatment area is further heated to ensure that the curing degree of the resin reaches more than 98 percent, thereby enhancing the stability of the heat-insulating material. Power partitioning is carried out according to the characteristics of the product, so that the effect similar to that of fiber boiling in warm water caused by slow temperature rise in a preheating zone is avoided on the premise of average power distribution, the material cannot be dried in time, and finally solidification is not finished, so that the product performance is poor; the power is divided according to the characteristics of the product, and the risks of high temperature of a post-processing area, oxidation of phenolic resin and fire on the premise of average power distribution are avoided.
The microwave unit is provided with a plurality of air outlets 102, and each air outlet 102 is communicated with an air outlet pipeline of the air outlet system and used for discharging steam generated by microwave heating. The arrangement of the air outlets meets the requirements that the air outlet flow of a preheating area is not lower than 3/5 of the total air outlet flow, the air outlet flow of a curing area is not lower than 3/20 of the total air outlet flow when the equipment works, the aftertreatment area has no air outlet flow, but at least one air outlet 102 is arranged in the aftertreatment area, the air outlet of the aftertreatment area is completely closed when the equipment works, no air outlet flow exists, but in order to ensure production safety, if the conditions such as material combustion occur, heat dissipation is carried out in time, and the air outlet 102 is reserved in the aftertreatment area. Further, the air outlets 102 in each zone are of the same size, and the air outlets 102 in each zone are evenly distributed. The distribution of the air outlet/air outlet flow avoids that the steam in the preheating area, which is caused by the average distribution of the air outlet/air outlet flow, cannot be quickly discharged, is condensed on the ceiling of the cavity of the equipment and drops on the surface of the material to cause surface 'mottling'; the waste of hot gas in a curing area is avoided, and the energy utilization rate is improved; the waste of hot air inlet when a hot air system is added in the post-treatment area is avoided, and the energy utilization rate is improved.
The inventor discovers in production that the use of microwave has the phenomenon that the heated board is wholly deformed and warped, and then confirms, installs at least one compression roller 104 in the microwave unit, and compression roller 104 exerts pressure to the material that bears on the conveyer belt unit, and the roughness of once curing heated board product can be guaranteed to the suppression through the compression roller, and the material warp when avoiding high temperature curing leads to the once curing heated board surface unevenness that takes shape.
Further, the press roll 104 is installed at the end of the preheating zone and/or the initial stage of the curing zone. The installation position of the press rolls is very relevant for the shaping of the product material, and contact pressure is applied at the end of the preheating zone and/or at the beginning of the curing zone.
In the invention, the conveyor belt unit comprises a conveyor belt 201, the conveyor belt 201 is driven by gears 202 positioned at two ends of the microwave unit, and grooves are processed at the bottom of the conveyor belt 201 and are matched with teeth on the gears 202.
Further, the gear 202 is driven by a servo motor, and the servo motor drives the gear 202 to rotate by monitoring the feeding speed, so that the speed of the conveyor belt is the same as the feeding speed.
Further, a support roller 203 is installed at a lower portion of the conveyor belt 201 at an interval, and the support roller 203 is in contact with a rear surface of the conveyor belt 201 to position the entire conveyor belt 201 at a desired height. The support roller 203 is a passive roller, and is driven by the conveyor belt to rotate, so that the conveyor belt speed is not interfered.
In the invention, the microwave curing equipment also comprises a hot air system which comprises an incinerator (preferably an RTO incinerator) and a hot air compensation pipeline, steam discharged by the microwave unit carries unreacted organic matters such as phenol/aldehyde and the like to enter the incinerator for combustion, and hot air generated by combustion in the incinerator enters the microwave unit from the post-treatment area through a hot air inlet 103 on the post-treatment area, so that thermal compensation is realized. In the curing area, the phenolic resin in the material is basically cured, in order to realize continuous curing and improve the stability of the product, the microwave power required by the post-treatment area must be increased, but the action time needs to be very short, so that the microwave heating is extremely difficult to control, the temperature rises instantaneously by hundreds of degrees, the material and equipment are easy to burn, and the production accident is caused. Therefore, through research and development, it is determined that high-power microwaves are not used in the post-treatment area, a hot air system and microwaves are combined initially, and after the temperature is stable, the phenolic resin is further cured only by the hot air system. The hot air system/thermal compensation function realizes zero pollution of the microwave curing equipment, and simultaneously recycles combustion hot air to return to the rear end of the microwave unit, thereby ensuring accurate control of the working procedure and production safety. The compensation flow of the hot air system is related to the productivity and the total power and is not less than the air outlet flow of the curing area.
The inventor discovers in production, adopt current RTO incinerator can not satisfy the hot-blast compensation demand of continuous stability completely, the reason lies in carrying a large amount of steam by microwave unit exhaust steam, steam is condensed by waste gas import 301 entering RTO incinerator back steam, the siltation can't in time effectively discharge in exhaust duct 302, water siltation blocks up exhaust duct 302 after serious, can't make follow-up steam get into regenerator 303 heat transfer, and then can't get into furnace 304 burning and produce the flue gas and supply to microwave unit, only can start production after the equipment stall drainage, cause assembly line production not to be consistent, reduce production efficiency. To this end, the inventor modified the existing equipment to add a self-draining device to the exhaust pipe 302 at the end of the exhaust inlet 301. The self-draining device comprises an S-shaped drain pipe 305, one end of the drain pipe 305 is communicated with the waste gas pipeline 302, and water accumulated in the waste gas pipeline 302 enters the drain pipe 305 and is discharged from the other end opening of the drain pipe, as shown in figure 5. Due to the S-shaped design of the drain pipe and the water sealing function of the water reserved in the pipeline, the steam entering the incinerator cannot overflow from the incinerator except the condensed water.
In the invention, the microwave curing equipment also comprises a humidity monitoring system and a temperature monitoring system, wherein the humidity monitoring system comprises humidity sensors distributed in each area of the microwave unit, the temperature monitoring system comprises temperature sensors distributed in each area of the microwave unit, the temperature sensors and the humidity sensors respectively monitor the temperature and the humidity in each area of the microwave unit, through information feedback, an operator can master the internal condition of the equipment in the primary curing process and can make corresponding adjustment, when the temperature and the humidity in the microwave unit do not change any more, the equipment is indicated to have established a specific temperature and humidity balance state, subsequent materials enter the microwave unit without adjusting microwave curing parameters, and the temperature and humidity balance state can be the basis of batch production of chemical lattice products.
In the present invention, when the microwave curing apparatus is used to perform a primary curing process, the following steps may be adopted:
the relation between the width dimension of the inner cavity of the microwave curing equipment and the productivity is as follows: the productivity is equal to the conveying speed of the microwave curing equipment multiplied by the allowable effective width of the microwave curing equipment multiplied by the time multiplied by the qualification rate (when the processing capacity of a single equipment is considered, the qualification rate can be temporarily considered to be 100 percent) formula 1;
the microwave power of each zone x the microwave working time of each zone is equal to the composite material total water weight heavy evaporation energy-composite material total resin polymerization energy + air outlet heat-hot gas compensation energy + microwave curing equipment cavity heat loss formula 2.
In the formula 2, the left side and the right side of the equation are time functions, the heat loss of the cavity of the microwave curing equipment can be approximately time constants (in a balanced state, the heat exchange between an internal constant temperature field and an external normal temperature field is constant), and the power of each area, the flow distribution and setting of the air outlet, the heat energy compensation amount and the speed of the conveyor belt can be obtained through modeling analysis.
and 3, discharging the material out of the microwave curing equipment, establishing thermal environment balance by the microwave curing equipment, and then carrying out magnetron shutdown adjustment according to the power subareas. Specifically, the power of the preheating zone 1/5-1/4 is closed, and the whole power of the post-treatment zone is closed.
After the thermal environment is balanced, the temperature of the curing area is controlled to be 110 +/-5 ℃ and normally and continuously operated, and the alarm is given out when the temperature is lower than 100 ℃ or higher than 120 ℃. Experience shows that the temperature is 110 +/-5 ℃, and the insulation board can obtain the best performance index.
In the invention, after primary curing, air cooling is carried out, the temperature is reduced to below 70 ℃, and then the mixture enters constant temperature heating equipment again to be heated for secondary curing. If the product directly enters a constant temperature heating device for secondary curing without air cooling, the product may be burnt due to the large heat accumulated.
Further, the secondary curing equipment can adopt microwave curing equipment with the same power distribution as that of the primary curing or a heating furnace or a drying room which can be used for a production line, if the microwave curing equipment is adopted, all magnetrons of the microwave curing equipment are started, and the microwaves enter the microwave curing equipment at the speed which is 3-3.5 times of the advancing speed of the primary curing; if a heating furnace or a drying room is adopted, the secondary curing is carried out for 20-50 min at 160-265 ℃.
In the secondary curing process, the molecules in the product are excited by energy again to react to generate a relatively compact carbonized layer, so that the heat insulation performance, the tensile strength, the compressive strength and the impact resistance of the product are greatly improved. Experience proves that if general glass wool or rock wool is adopted, the structural strength is low because the glass wool or rock wool has no fixed form, the hood layer is movably combined with the L-shaped embedded part mechanically, when the vertical plate drawing test strength is up to 1MPa, the hood layer made of the aluminum-zinc-plated steel plate can be pulled off, when the insulation board which enters the constant-temperature heating equipment for the second time is used as an insulation material, the hood layer is fixed with the L-shaped embedded part mechanically because the rigidity of the product is improved, the product is integrated with a wall, and when the vertical plate drawing test strength is up to 15MPa, the hood layer of the aluminum-zinc-plated steel plate is not pulled off.
Examples
The raw material sources of the embodiment of the invention are as follows: the alkali-free glass fiber is purchased from Taishan glass fiber, type short-cut electronic sand; the medium alkali glass fiber is purchased from Taishan glass fiber, and the type is directly wound with sand; water soluble phenolic resins were purchased from tel chemical, model P725271M.
Example 1
The utility model provides a structure of beating conversely suitable for assembly type structure outer wall, includes heated board 1, cover layer 2 and steel L type embedded part 3, and cover layer 2 is the rectangle shell structure that the aluminized zinc steel sheet was made, and the cover is established on the outer face of heated board 1, seals all faces outside the heated board inner panel, and the thickness of heated board 1 equals with the thickness of cover layer 2 inner chamber, coating bi-component polyurethane binder between heated board 1 and the cover layer 2. L type buries inner arm 31 and outer arm 32 of piece 3 perpendicularly, and the length of outer arm 32 is greater than the thickness of heated board 1, and outer arm 32 is perpendicular with heated board 1 thickness direction, pastes the outer wall of tight cover layer 2, connects the one end of inner arm 31 inboard towards heated board 1, and the free end of inner arm 31 is towards the heated board center, buries the rivet of penetrating outward through by L type 3 and buries the piece 3 with heated board 1, cover layer 2 and L type and connect as an organic wholely. The thickness of the heat preservation plate is 28mm, the thickness of the aluminum-zinc-plated steel plate is 0.7mm, the length of the inner arm 31 of the L-shaped embedded part 3 is 30mm, and the length of the outer arm 32 is 50 mm.
The heat-insulating board is a board with fireproof and heat-insulating properties, and the heat-insulating board and the preparation process thereof are as follows: the glass fiber is prepared into 4860kg of alkali-free glass fiber and 14580kg of medium alkali glass fiber, the filament diameters of the glass fiber and the medium alkali glass fiber are 10 mu m, and the length of the glass fiber is 75 mm. 3240kg of water-soluble phenolic resin stock, viscosity of 13cp at 25 ℃, 49 wt% of solid content and pH 10.0.
The glass fiber reaches a spraying machine (spraying water-soluble resin with the amount of 99kg/h), a microwave curing device for primary curing and a microwave curing device for secondary curing through an automatic feeding machine (feeding 122kg of alkali-free glass fiber and 365kg of medium alkali glass fiber per hour), a bale opener, an opener, a carding machine, a lapping machine, a needle machine and a conveyor, and a novel fireproof heat-insulation board with the width of 2m, the thickness of 28mm and the length of 30m is prepared after 1 hour, and the novel fireproof heat-insulation board is non-combustible at A1 level and is non-toxic at AQ2 level. Specific performance data are shown in table 1 below.
TABLE 1 Performance data
Wherein, the shower is 2.5m long, and the PVC pipe of cone angle 0.5 degree advances gluey end (macrostoma end) 35mm internal diameter, and 1mm spraying hole is seted up at lower edge interval 2 cm.
Wherein, the box body of the microwave curing equipment for primary curing is 40 multiplied by 2.4 multiplied by 1.6m, and the allowable effective width of the inner cavity is 2.1 m; the total power of the equipment is 440kW, the preheating area is 220kW, the curing area is 176kW, and the post-treatment area is 44 kW; starting the microwave curing equipment, and starting the microwaves of all areas along with the material process; the speed of the conveyor belt is 0.31m/min, and when the materials pass through the preheating zone, the air outlet system is opened, and the total air outlet flow is 5000m3H, the air outlet flow of the preheating zone is 3500m3H, the air outlet flow of the solidification area is 1500m3H; after the material passes through the curing area, a hot air system is opened, hot air is at 200-220 ℃, and the hot air flow is 1200m3H; after the material head is discharged from the equipment, the power of the preheating zone 1/4 is closed, the whole power of the post-treatment zone is closed, and the relative steady state of reaction balance is established in the furnace.
And air-cooling after primary curing, cooling to 70 ℃, entering microwave curing equipment for secondary curing, wherein the secondary curing is carried out at the full power when the microwave power is the primary curing, and the advancing speed is 3.5 times that of the primary curing (the material can reach 160-.
Because the cover layer is a metal aluminum-zinc-plated steel plate, the heat-insulation plate has A1-grade fireproof performance, and the reverse hitting structure naturally has A1-grade fireproof performance. The heat insulation performance of the reverse beating structure is provided by the heat insulation plate.
The invention has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to be construed in a limiting sense. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its embodiments without departing from the spirit and scope of the present invention, which fall within the scope of the present invention. The scope of the invention is defined by the appended claims.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.
Claims (15)
1. The utility model provides a turn over and beat structure suitable for assembled building outer wall, a serial communication port, bury piece (3) including heated board (1), hood (2) and L type, hood (2) are shell structure, the cover is established on the outer face of heated board (1), seal all faces outside the heated board inner face, L type buries piece (3) and includes crossing inner arm (31) and outer arm (32), the length of outer arm (32) is greater than the thickness of heated board (1), outer arm (32) are perpendicular with heated board (1) thickness direction, paste the outer wall surface of hood (2) tightly, the one end of connecting inner arm (31) is towards the inboard of heated board (1); the free end of the inner arm (31) faces the center of the heat insulation plate, and the heat insulation plate (1), the cover layer (2) and the L-shaped embedded part (3) are connected into a whole through a connecting piece penetrated from the outside of the L-shaped embedded part (3);
the preparation process of the insulation board comprises a spraying process, a primary curing process and a secondary curing process which are sequentially carried out; in the primary curing process, microwave curing equipment is adopted to implement primary curing;
the microwave curing equipment comprises a microwave unit, a conveyor belt unit, an air outlet system and a hot air system, wherein the microwave unit is provided with a cavity structure, the conveyor belt unit bears materials sprayed with the water-soluble phenolic resin and enters the cavity of the microwave unit, and the microwave unit heats and cures the water-soluble phenolic resin through microwaves; the air outlet system is communicated with the microwave unit, steam generated by microwave heating is discharged to the hot air system through an air outlet pipeline, and after the hot air system burns the steam, hot air generated after burning is returned to the microwave unit;
the top of the inner cavity of the microwave unit is provided with a magnetron (101) for microwave heating of materials passing below the magnetron (101); the microwave unit is divided into a preheating zone, a curing zone and a post-treatment zone, wherein the power of a magnetron in the preheating zone accounts for 2/5-3/5 of the total power, the material is dried, the power of the magnetron in the curing zone accounts for 3/10-1/2 of the total power, the water-soluble phenolic resin is heated and cured, the power of the magnetron in the post-treatment zone accounts for 1/10 of the total power, and the heating and curing are continuously carried out.
2. The counter-beating structure of claim 1, wherein the thickness of the heat-insulating plate (1) is greater than, less than or equal to the thickness of the inner cavity of the cover layer (2).
3. Counter-beating structure according to claim 1, characterised in that a two-component polyurethane adhesive is applied between the insulation board (1) and the cover layer (2).
4. Backhand according to claim 1, characterized in that the angle between the inner (31) and outer (32) arms of the L-shaped burial (3) is not more than 90 °.
5. The counter-beating structure of claim 1, wherein the heat-insulating plate (1) comprises the following components in parts by mass:
100 parts of inorganic fiber;
1-13 parts of phenolic resin;
wherein, the inorganic fiber is selected from any one or the combination of alkali-free glass fiber or basalt fiber;
the raw material of the phenolic resin is water-soluble phenolic resin.
6. The counter-beating structure of claim 5, wherein the inorganic fibers are glass fibers and are a combination of alkali-free glass fibers and medium-alkali glass fibers, and the mass ratio of the alkali-free glass fibers to the medium-alkali glass fibers is 1: 1-1: 3.
7. The backhander structure according to claim 5, wherein the inorganic fiber is a chopped fiber having a filament diameter of 5 to 20 μm; the length is 50-75 mm, and the length error is +/-5 mm.
8. The backhander structure according to claim 1, wherein the shower device in the shower process is a pipe-type shower device comprising a storage tank, a servo pipe and a shower pipe, the storage tank being filled with a water-soluble phenol resin and being transported to the shower pipe through the servo pipe, wherein,
the spraying pipe is a conical pipe, and spraying holes with the diameter of 1-2 mm are formed in the spraying pipe at intervals of 2-4 cm.
9. The backhander of claim 8, wherein the spray pipe is fixed to the rigid holder, the material conveying belt is located below the spray pipe, and the spray hole of the spray pipe faces downward and sprays the material during the material conveying process.
10. The backhander of claim 8, wherein the storage tank has a heating device therein; and/or
And a stirring device is arranged in the storage tank.
11. The counter-beating structure of claim 1, wherein a plurality of air outlets (102) are arranged in the microwave unit, and each air outlet (102) is communicated with an air outlet pipeline of an air outlet system; the setting of the air outlet satisfies that the air outlet flow of the preheating area is not less than 3/5 of the total air outlet flow, the air outlet flow of the curing area is not less than 3/20 of the total air outlet flow when the device works, the post-processing area has no air outlet flow, but the post-processing area is provided with at least one air outlet.
12. The backhander structure of claim 1, wherein the hot air system delivers hot air from the aftertreatment region to the microwave unit through a hot air inlet (103) in the aftertreatment region.
13. The backhander of claim 1, wherein the primary curing process comprises the steps of:
step 1, determining the power of each area of microwave curing equipment, the flow distribution and setting of an air outlet, the heat energy compensation amount and the speed of a conveyor belt according to the capacity;
step 2, in the starting stage of the microwave curing equipment, microwaves of all areas are started along with the material process; after the materials pass through the preheating zone, opening an air outlet system, and after the materials pass through the curing zone, opening a hot air system; wherein the power of the magnetron in the preheating zone accounts for 2/5-3/5 of the total power, the power of the magnetron in the curing zone accounts for 3/10-1/2 of the total power, and the power of the magnetron in the post-processing zone accounts for 1/10 of the total power; the air outlet flow in the preheating zone is not lower than 3/5 of the total air outlet flow, the air outlet flow in the curing zone is not lower than 3/20 of the total air outlet flow, and the air outlet flow in the post-treatment zone is not higher than;
and 3, after the material is discharged from the microwave curing equipment and the microwave curing equipment establishes thermal environment balance, carrying out magnetron shutdown adjustment according to power partitions, wherein power of the preheating zone 1/5-1/4 is shut down, and all power of the post-processing zone is shut down.
14. The counter beating structure of claim 1, wherein the air cooling is performed after the primary curing, the temperature is reduced to below 70 ℃, and the air cooling enters the constant temperature heating equipment again to be heated for secondary curing.
15. The structure of claim 1, wherein the secondary curing equipment is microwave curing equipment with the same power distribution as that of the primary curing, a heating furnace or a drying room for a production line, if the microwave curing equipment is adopted, all magnetrons of the microwave curing equipment are started, and the magnetrons enter the microwave curing equipment at a speed 3-3.5 times of the travelling speed of the primary curing; if a heating furnace or a drying room is adopted, the secondary curing is carried out for 20-50 min at 160-265 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010566918.8A CN112031185B (en) | 2020-06-19 | 2020-06-19 | Reverse beating structure suitable for assembly type building outer wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010566918.8A CN112031185B (en) | 2020-06-19 | 2020-06-19 | Reverse beating structure suitable for assembly type building outer wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112031185A CN112031185A (en) | 2020-12-04 |
| CN112031185B true CN112031185B (en) | 2021-10-01 |
Family
ID=73578933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010566918.8A Active CN112031185B (en) | 2020-06-19 | 2020-06-19 | Reverse beating structure suitable for assembly type building outer wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112031185B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201137273Y (en) * | 2007-12-20 | 2008-10-22 | 上海笨鸟建筑节能工程有限公司 | Heat insulation decoration board |
| CN102251596B (en) * | 2011-03-25 | 2012-12-05 | 唐山北极熊建材有限公司 | Manufacture process of ultralight foam cement heat-insulation metal-surface sandwich board used in light steel plant |
| RU2616306C1 (en) * | 2016-04-13 | 2017-04-14 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный архитектурно-строительный университет" (ФГБОУ ВПО "СПбГАСУ") | Method for construction of multistore buildings of three-dimensional blocks |
| CN110154421B (en) * | 2019-05-22 | 2023-12-22 | 湖州守真新材料科技有限公司 | Continuous production line and production method of glue injection box and fiber reinforced foam composite material |
-
2020
- 2020-06-19 CN CN202010566918.8A patent/CN112031185B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112031185A (en) | 2020-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104047368B (en) | Aeroge composite fibre heat insulating material and preparation method thereof | |
| CA2613967C (en) | Thin rotary-fiberized glass insulation and process for producing same | |
| CN101775850B (en) | Manufacture method of core material of vacuum heat insulation plate | |
| CN203821612U (en) | Outer wall outer heat-insulation structure provided with reinforcedglass wool board | |
| CN104649622A (en) | Vermiculite plate capable of releasing negative oxygen ions and preparation method thereof | |
| CN102926471A (en) | Modified fireproofing inorganic fiber heat-insulation board | |
| CN103196007A (en) | Vacuum insulated panel core material and manufacturing method thereof | |
| CN102514294B (en) | Multilayer reflection heat insulation composite board and manufacturing method thereof | |
| CN112031185B (en) | Reverse beating structure suitable for assembly type building outer wall | |
| CN112142367B (en) | Novel insulation board and preparation process thereof | |
| CN1970961A (en) | Composite metal tile and its making process | |
| CN101032829A (en) | Method of producing rock wool lath | |
| CN104070717B (en) | Chromatic steel sandwich plate and its preparation method | |
| CN112031265B (en) | Assembled building outer wall | |
| CN111764050B (en) | Insulation board production line | |
| CN111719719B (en) | Fire-proof decoration integrated fire-proof isolation belt | |
| CN111761767B (en) | Microwave curing equipment and curing process for production of insulation board | |
| CN205444519U (en) | Novel thermal insulation board | |
| CN102619290A (en) | Fireproof vertical filament inorganic silicon fiber insulation board | |
| CN110423014A (en) | A kind of basalt fibre wood-based plate and preparation method thereof | |
| CN212948727U (en) | Microwave curing equipment | |
| CN215209140U (en) | Online dry production system for glass wool vacuum insulation panel core material | |
| CN113773003B (en) | Door lining material and preparation method thereof | |
| CN212288104U (en) | Steam curing device for core hole of concrete light partition wall board strip | |
| CN108532823A (en) | A kind of heat-insulated color steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |