CN114734704A - Purify various steel sheet of environment-friendly - Google Patents

Purify various steel sheet of environment-friendly Download PDF

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Publication number
CN114734704A
CN114734704A CN202210318856.8A CN202210318856A CN114734704A CN 114734704 A CN114734704 A CN 114734704A CN 202210318856 A CN202210318856 A CN 202210318856A CN 114734704 A CN114734704 A CN 114734704A
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CN
China
Prior art keywords
steel plate
color steel
layer
environment
purifying
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Pending
Application number
CN202210318856.8A
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Chinese (zh)
Inventor
谭小芳
孟秀梅
王帅
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Shenzhen Shuaiying Purification Engineering Co ltd
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Shenzhen Shuaiying Purification Engineering Co ltd
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Priority to CN202210318856.8A priority Critical patent/CN114734704A/en
Publication of CN114734704A publication Critical patent/CN114734704A/en
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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Building Environments (AREA)

Abstract

The invention provides a purifying environment-friendly color steel plate which comprises a first color steel plate base layer, a first sound-absorbing fiber plate layer, a PI/EVA foam layer, a second sound-absorbing fiber plate layer and a second color steel plate base layer which are sequentially arranged from outside to inside; the first sound absorption fiber board layer and the second sound absorption fiber board layer are composed of a carbon fiber upper panel, an ultrafine glass fiber core material and a carbon fiber lower panel, and a mesh structure of the ultrafine glass fiber core material is filled with a mixture of bamboo charcoal powder and activated charcoal powder; the PI/EVA foam layer is prepared by mould pressing foaming; the environment-friendly color steel plate provided by the invention has the characteristics of good protection, heat preservation, fire prevention, sound absorption and sound insulation, and also has the effect of purifying the air environment, so that the service life of the environment-friendly color steel plate is effectively prolonged, and the application field is expanded.

Description

Purify various steel sheet of environment-friendly
Technical Field
The invention relates to the technical field of color steel plates, in particular to a purifying environment-friendly color steel plate.
Background
The color steel plate is also a color steel sandwich plate, is a widely used building material, and has the advantages of small rigidity, simple and convenient installation and the like, wherein the core material of the color steel plate mainly comprises foam, rock wool and paper honeycomb materials, and has a good heat preservation function; chinese patent document No. CN109096459B discloses an environment-friendly low-density polyurethane sandwich panel, which is a polyurethane color steel plate produced by a continuous polyurethane sandwich panel production process, the polyurethane color steel plate comprises a face plate, a sandwich layer and a bottom plate, the sandwich layer is prepared by reacting a combination polyether and isocyanate, wherein the combination polyether comprises: 20-35 parts of polyether polyol A, 30-45 parts of polyether polyol B, 5-20 parts of polyether polyol C, 5-15 parts of polyether polyol D, 5-10 parts of polyether polyol E and 1.5-3.0 parts of a foam stabilizer; 0.8-1.5 parts of catalyst a, 1.3-2.0 parts of catalyst b, 1.0-1.6 parts of catalyst c, 11-20 parts of foaming agent and 1.8-2.2 parts of water; the environment-friendly low-density polyurethane sandwich board adopts a foaming system mainly comprising cyclopentane, is energy-saving and environment-friendly, and has the advantages of low density, uniform foam holes, good dimensional stability, low heat conductivity coefficient and excellent heat insulation performance.
Along with the increasing importance of the country, the industry and the public on living environment and the influence of particulate pollutants in air on health, people do not stop on the performance of building protection and heat preservation any more, the characteristics of fire safety, environmental protection, sound absorption and sound insulation, capability of purifying harmful substances in indoor environment, long service life, strong practicability and wide applicability of the material become the key requirements of the country, the industry and the public on the material.
Therefore, the research and development of the environment-friendly color steel plate with basic protection and heat preservation characteristics, sound absorption and insulation characteristics and air purification environmental characteristics is in urgent need to be solved.
Disclosure of Invention
The environment-friendly color steel plate has the advantages of good protection, heat preservation, fire prevention, sound absorption and sound insulation properties, and air environment purification, effectively prolongs the service life of the environment-friendly color steel plate, and expands the application field.
In order to solve the technical problems, the invention adopts a technical scheme that:
a purifying environment-friendly color steel plate comprises a first color steel plate base layer, a first sound-absorbing fiber board layer, a PI/EVA foam layer, a second sound-absorbing fiber board layer and a second color steel plate base layer which are arranged in sequence from outside to inside;
the preparation method of the purifying environment-friendly color steel plate comprises the following steps:
step (1): placing a first color steel plate base layer in a mold, and attaching and placing one side of a first sound absorption fiber plate layer with two sides fully coated with resin adhesive on the first color steel plate base layer;
step (2): preparing a PI/EVA foam layer, and attaching one side of the prepared PI/EVA foam layer to the other side of the first sound absorption fiberboard layer;
and (3): attaching one side of a second sound-absorbing fiberboard layer with two sides coated with resin glue to the other side of the PI/EVA foam layer;
and (4): attaching one side of a second color steel plate base layer to the other side of the second sound-absorbing fiberboard layer to obtain a composite board;
and (5): and (3) before the resin adhesive is cured, pressing the composite board obtained in the step (4) for 0.5-1h under the condition of 0.5-4MPa, and further bonding the first color steel plate base layer, the first sound absorption fiber board layer, the PI/EVA foam layer, the second sound absorption fiber board layer and the second color steel plate base layer to obtain the purifying and environment-friendly color steel plate.
Furthermore, the thicknesses of the first color steel plate base layer and the second color steel plate base layer are both 5 mm; the thickness of the first sound absorption fiber board layer and the thickness of the second fiber board layer are both 10-35 mm; the thickness of the PI/EVA foam layer is 30-50 mm.
Further, the coating thickness of the resin adhesive is 0.5-1 mm; the resin adhesive is phenolic resin adhesive or epoxy resin AB adhesive.
Further, the sound-absorbing fiberboard layer comprises a carbon fiber upper panel, a superfine glass fiber core material and a carbon fiber lower panel which are sequentially arranged from outside to inside; the mesh structure of the superfine glass fiber can effectively absorb vibration and sound energy transmitted to the material, has good heat preservation and heat insulation performance, and can assist in improving the heat preservation effect of the color steel plate; the sound-absorbing fiber board layer which takes the superfine glass fiber as the core material and takes the carbon fiber as the panel for forming can not only enhance the sound-absorbing performance of the color steel plate, but also effectively improve the mechanical strength of the color steel plate.
Further, the mesh structure of the superfine glass fiber core material is filled with a mixture of bamboo charcoal powder and activated carbon powder, wherein the mass ratio of the bamboo charcoal powder to the activated carbon powder is 1-3: 2-5; the mesh number of the bamboo charcoal powder is 800 meshes, and the mesh number of the activated charcoal powder is 400 meshes; the mixture of bamboo charcoal powder and activated carbon powder is filled in the mesh structure of the superfine glass fiber core material, so that the sound absorption effect of the sound absorption fiberboard layer can be further enhanced, and the effects of purifying the air environment and adsorbing pollutants are achieved.
Further, the PI/EVA foam layer comprises the following raw material components in parts by weight: 65-90 parts of polyimide (P I), 30-40 parts of flame-retardant ethylene-vinyl acetate copolymer (EVA), 15-30 parts of superfine glass fiber, 2-5 parts of silane coupling agent KH550, 2-7 parts of Tween 80, 8-15 parts of diatomite, 3-10 parts of AC foaming agent and 2-3 parts of zinc oxide.
Further, the PI/EVA foam layer comprises the following preparation steps:
a step (21): adding PI, flame-retardant EVA, superfine glass fiber and silane coupling agent KH550 into a stirrer according to the parts by weight, and mixing and stirring for 0.5h at the temperature of 40-50 ℃ and the rotating speed of 50-80rpm to obtain a mixed raw material;
step (22): placing the mixed raw material obtained in the step (21) into a double-screw extruder, performing melt extrusion at the extrusion temperature of 175-190 ℃ and at the speed of 65-70rpm, cooling with water, and performing granulation to obtain a composite material;
step (23): mixing the composite material obtained in the step (22) with Tween 80, diatomite, an AC foaming agent and zinc oxide in parts by weight in an open mill at the temperature of 50 ℃ for 0.5-1h to obtain P I/EVA foaming mixed raw material;
step (24): putting the PI/EVA foaming mixed raw material obtained in the step (23) into a foaming chamber of a die device in a die pressing foaming device, and introducing CO into the foaming chamber2Pressurizing and heating the mixture, molding the mixture at 215-220 ℃ and 10-12MPa for 15-20min, and rapidly releasing CO (2-4MPa/s)2Cooling and shaping to obtain a flat P I/EVA foam layer; the heater in the mould pressing foaming device is an infrared heater; the temperature is raised by infrared penetrating and heating, so that the PI/EVA foaming material is uniformly heated inside and outside in the foaming process, the compactness of P I/EVA foam is improved, and better heat insulation, flame resistance and other performances are obtained;
wherein the heat conductivity coefficient of the prepared PI/EVA foam layer is 0.02-0.04W/m.K, the flame resistance is V-0 grade, the moisture absorption rate is less than or equal to 1.4 percent, and the compression permanent deformation is less than or equal to 6 percent; the prepared PI/EVA foam layer material has the advantages of excellent heat insulation, flame retardance and sound insulation effects, light weight, long service life, environmental friendliness and the like.
Further, for the regions with strong rainwater in the south, a PC/PTFE film is attached to the outer side of the first color steel plate base layer; the preparation process of the PC/PTFE film comprises the following steps: sputtering and plating a PTFE (polytetrafluoroethylene) super-hydrophobic film on the surface of the PC substrate film by a radio frequency magnetron sputtering method to obtain a PC/PTFE film; wherein the thickness of the PC/PTFE film is 0.25-0.5 mm;
the PC substrate film consists of 89.5-95% of polycarbonate resin, 3-6% of zinc oxide, 0.5-1.5% of silane coupling agent KH550, 0.8-1.5% of antioxidant 168 and 0.7-1.5% of flame retardant BDP raw materials;
the prepared PC/PTFE film has the functions of shielding ultraviolet rays, enhancing illumination aging resistance and preventing rainwater from permeating into the color steel plate, can effectively prolong the service life of the purifying environment-friendly color steel plate and expand the application field;
the preparation of the radio frequency magnetron sputtering method for sputtering and plating the PTFE film and the PC substrate film is the prior art and is not described in detail.
Further, for the purpose of saving energy and reducing consumption of an air conditioner for assisting air purification in a large public building, the second color steel plate base layer can be set to be a micro-louver-shaped color steel plate base layer, and a titanium dioxide purification film is formed on the surface of the micro-louver-shaped second color steel plate base layer through sputtering by a radio frequency magnetron sputtering method; wherein the thickness of the titanium dioxide purification film is 50-120 nm;
and (3) after the purifying and environment-friendly color steel plate is prepared according to the steps (1) to (5), further fixing the prepared purifying and environment-friendly color steel plate through anchor bolts.
Further, in the step (5), the composite board is pressed, and the magnitude of the pressure is determined by the following formula method:
Figure BDA0003569758310000041
wherein C is a pressure constant and takes 1-10 MPa;
Ktthe value of the pressing time coefficient is 0.2-0.6;
TWis the thickness of the first sound absorbing fiberboard;
TZis the thickness of the PI/EVA foam layer;
TMis the thickness of the second sound absorbing fiberboard layer;
TRis the thickness of the purifying environment-friendly color steel plate.
The invention has the beneficial effects that:
(1) the purifying environment-friendly color steel plate provided by the invention has good heat insulation performance, fire resistance, sound absorption and sound insulation performance, and meets or even exceeds the requirement of a common color steel plate on the fire resistance and heat insulation characteristics; the excellent heat insulation and flame retardant effects of the P I/EVA foam layer material not only effectively enhance the heat insulation performance of the environment-friendly color steel plate, but also improve the fire-proof grade of the color steel plate; the mesh structures of the superfine glass fibers in the first sound-absorbing fiberboard layer and the second sound-absorbing fiberboard layer effectively absorb vibration and sound energy transmitted to the material, and the mixture of bamboo charcoal powder and activated charcoal powder is filled in the mesh structures of the superfine glass fiber core material, so that the sound-absorbing effect of the sound-absorbing fiberboard layer is further enhanced, and the effects of purifying the air environment and absorbing pollutants are also achieved; the first color steel plate base layer, the first sound absorption fiber board layer, the PI/EVA foam layer, the second sound absorption fiber board layer and the second color steel plate base layer are bonded and fixed, and the mechanical property and the bonding stability of the purification color steel plate are cooperatively enhanced.
(2) The invention provides a purifying environment-friendly color steel plate.A heater in a mould pressing foaming device is an infrared heater in the mould pressing foaming process of a PI/EVA foaming layer; the temperature is raised by infrared ray penetrating and heating, so that the PI/EVA foaming material is heated uniformly inside and outside in the foaming process, the compactness of the PI/EVA foam is improved, and better heat insulation, flame resistance and other performances are obtained.
(3) According to the purifying environment-friendly color steel plate provided by the invention, in areas with strong rainwater and strong rays in the south, the first color steel plate base layer is attached to the PC/PTFE film, so that the effects of shielding ultraviolet rays and enhancing illumination and aging resistance are achieved, the erosion of the color steel plate caused by rain wash can be reduced, the phenomenon that water in a humid external environment is attached to the surface of the color steel plate or permeates into the color steel plate is avoided, the service life of the purifying environment-friendly color steel plate is effectively prolonged, and the application field is expanded.
(4) The invention provides a purifying environment-friendly color steel plate, which achieves the purposes of saving energy and reducing consumption for an air conditioner for assisting air purification in a large public building, and the base layer of the second color steel plate is arranged into a micro louver shape, so that the purifying environment-friendly color steel plate is favorable for adsorbing pollutants in the air under the condition that natural wind exists indoors, and the purpose of purifying the air is better achieved; in addition, the titanium dioxide purification film on the surface of the base layer of the miniature louver-shaped second color steel plate also effectively degrades formaldehyde and other substances in the air, further assists the color steel plate prepared by the invention to play a role in purifying the air environment, and also realizes the purposes of energy conservation and consumption reduction of buildings.
(5) The method for determining the pressure in the process of pressurizing the color steel plate is based on the thickness of each layer of material of the color steel plate, the thickness of the target purifying environment-friendly color steel plate and the pressurizing time, and the purifying environment-friendly color steel plate pressurized by the method effectively ensures the stability of the quality of the purifying color steel plate, avoids the poor quality problems of collapse and the like of each layer in the color steel plate caused by overlarge pressure, and influences the effects of sound absorption, sound insulation, heat insulation and heat preservation; and the problem that the practical application is influenced because the pressure is too low and the effect of further adhering, curing, purifying and environment-friendly color steel plates cannot be achieved is also avoided.
Drawings
Fig. 1 is a schematic view of a clean environment-friendly color steel plate in embodiments 1 to 3 of the present invention.
Fig. 2 is a schematic view of a purifying environment-friendly color steel plate in embodiment 4 of the present invention.
Fig. 3 is a schematic view of a purifying environment-friendly color steel plate in embodiment 5 of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1
A purifying environment-friendly color steel plate is shown in figure 1 and comprises a first color steel plate base layer, a first sound-absorbing fiber board layer, a PI/EVA foam layer, a second sound-absorbing fiber board layer and a second color steel plate base layer which are arranged in sequence from outside to inside;
the preparation method of the purifying environment-friendly color steel plate comprises the following steps:
step (1): placing a first color steel plate base layer in a mold, and attaching and placing one side of a first sound absorption fiber plate layer with two sides fully coated with resin adhesive on the first color steel plate base layer;
step (2): preparing a PI/EVA foam layer, and attaching one side of the prepared PI/EVA foam layer to the other side of the first sound absorption fiberboard layer;
and (3): attaching one side of a second sound-absorbing fiberboard layer with two sides coated with resin glue to the other side of the PI/EVA foam layer;
and (4): attaching one side of a second color steel plate base layer to the other side of the second sound-absorbing fiberboard layer to obtain a composite board;
and (5): and (3) before the resin adhesive is cured, pressing the composite board obtained in the step (4) for 0.5-1h under the condition of 0.5-4MPa, and further bonding the first color steel plate base layer, the first sound absorption fiber board layer, the PI/EVA foam layer, the second sound absorption fiber board layer and the second color steel plate base layer to obtain the purifying and environment-friendly color steel plate.
The coating thickness of the resin adhesive is 0.8 mm; the resin adhesive is epoxy resin AB adhesive;
the sound-absorbing fiberboard layer comprises a carbon fiber upper panel, a superfine glass fiber core material and a carbon fiber lower panel which are sequentially arranged from outside to inside;
the superfine glass fiber core material is characterized in that a mixture of bamboo charcoal powder and activated carbon powder is filled in a mesh structure of the superfine glass fiber core material, wherein the mass ratio of the bamboo charcoal powder to the activated carbon powder is 1: 2; the mesh number of the bamboo charcoal powder is 800 meshes, and the mesh number of the activated charcoal powder is 400 meshes;
the PI/EVA foam layer comprises the following preparation steps:
step (21): adding 80 parts by weight of PI, 30 parts by weight of flame-retardant EVA, 25 parts by weight of superfine glass fiber and 2 parts by weight of silane coupling agent KH550 into a stirrer, and mixing and stirring for 0.5h at the temperature of 45 ℃ and the rotating speed of 70rpm to obtain a mixed raw material;
step (22): placing the mixed raw material obtained in the step (21) into a double-screw extruder, performing melt extrusion at the extrusion temperature of 175-190 ℃ and at the speed of 65-70rpm, cooling with water, and performing granulation to obtain a composite material;
step (23): mixing the composite material obtained in the step (22) with 5 parts of Tween 80, 8 parts of diatomite, 7 parts of AC foaming agent and 3 parts of zinc oxide raw material in an open mill at the temperature of 50 ℃ for 0.5h to obtain P I/EVA foaming mixed raw material;
step (24): placing the P I/EVA foaming mixed raw material obtained in the step (23) into a foaming chamber of a die device in a die pressing foaming device, and introducing CO into the foaming chamber2Exhausting air, pressurizing and heating, molding at 215 deg.C under 11MPa for 18 min, rapidly relieving pressure (3MPa/s) to release CO2Cooling and shaping to obtain a flat P I/EVA foam layer;
wherein, the prepared P I/EVA foam layer has the thermal conductivity coefficient of 0.025W/m.K, the flame resistance of V-0 grade, the moisture absorption rate of 1.2 percent and the compression set of 5.3 percent.
Example 2
A purifying environment-friendly color steel plate is shown in figure 1 and comprises a first color steel plate base layer, a first sound-absorbing fiber board layer, a PI/EVA foam layer, a second sound-absorbing fiber board layer and a second color steel plate base layer which are arranged in sequence from outside to inside;
preparing a purified environment-friendly color steel plate according to the preparation method in the embodiment 1;
wherein the coating thickness of the resin adhesive is 0.9 mm; the resin adhesive is a phenolic resin adhesive;
the sound-absorbing fiberboard layer comprises a carbon fiber upper panel, a superfine glass fiber core material and a carbon fiber lower panel which are sequentially arranged from outside to inside;
the superfine glass fiber core material is characterized in that a mesh structure of the superfine glass fiber core material is filled with a mixture of bamboo charcoal powder and activated carbon powder, wherein the mass ratio of the bamboo charcoal powder to the activated carbon powder is 2: 3; the mesh number of the bamboo charcoal powder is 800 meshes, and the mesh number of the activated charcoal powder is 400 meshes;
the P I/EVA foam layer comprises the following preparation steps:
step (21): adding 90 parts by weight of P I, 30 parts by weight of EVA, 27 parts by weight of superfine glass fiber and 3 parts by weight of silane coupling agent KH550 into a stirrer, and mixing and stirring for 0.5h at the temperature of 45 ℃ and the rotating speed of 70rpm to obtain a mixed raw material;
step (22): and (2) mixing the step (21): the mixed raw materials obtained in the step (1) are placed in a double-screw extruder, and are melted and extruded at the extrusion temperature of 175-190 ℃ and the rotation speed of 70rpm, cooled by water and granulated to obtain a composite material;
step (23): : and (3) carrying out the following steps: mixing the composite material obtained in the step (1) with 5 parts of Tween 80, 10 parts of diatomite, 8 parts of AC foaming agent and 3 parts of zinc oxide raw materials in an open mill at the temperature of 50 ℃ for 0.5h to obtain a PI/EVA foaming mixed raw material;
step (24): placing the P I/EVA foaming mixed raw material obtained in the step (23) into a foaming chamber of a die device in a die pressing foaming device, and introducing CO into the foaming chamber2Exhausting air, pressurizing and heating, molding at 215 deg.C under 11MPa for 18 min, rapidly relieving pressure (3MPa/s) to release CO2Cooling and shaping to obtain a flat P I/EVA foam layer;
wherein, the prepared P I/EVA foam layer has the thermal conductivity coefficient of 0.024W/m.K, the flame resistance of V-0 grade, the moisture absorption rate of 1.1 percent and the compression set of 5.2 percent.
Example 3
A purifying environment-friendly color steel plate comprises a first color steel plate base layer, a first sound-absorbing fiberboard layer, a PI/EVA foam layer, a second sound-absorbing fiberboard layer and a second color steel plate base layer which are sequentially arranged from outside to inside as shown in figure 1;
preparing a purified environment-friendly color steel plate according to the preparation method in the embodiment 1;
wherein the coating thickness of the resin adhesive is 0.9 mm; the resin adhesive is epoxy resin AB adhesive;
the sound-absorbing fiberboard layer comprises a carbon fiber upper panel, a superfine glass fiber core material and a carbon fiber lower panel which are sequentially arranged from outside to inside;
the superfine glass fiber core material is characterized in that a mesh structure of the superfine glass fiber core material is filled with a mixture of bamboo charcoal powder and activated carbon powder, wherein the mass ratio of the bamboo charcoal powder to the activated carbon powder is 1: 3; the mesh number of the bamboo charcoal powder is 800 meshes, and the mesh number of the activated charcoal powder is 400 meshes;
the P I/EVA foam layer comprises the following preparation steps:
step (21): adding 85 parts of P I, 30 parts of EVA, 30 parts of superfine glass fiber and 3 parts of silane coupling agent KH550 into a stirrer by weight parts, and mixing and stirring for 0.5h at the temperature of 45 ℃ and the rotating speed of 70rpm to obtain a mixed raw material;
step (22): and (3) mixing the following steps: the mixed raw materials obtained in the step (1) are placed in a double-screw extruder, and are subjected to melt extrusion, water cooling and granulation at the extrusion temperature of 175-190 ℃ and at 70rpm to obtain a composite material;
step (23): and (3) mixing the step (22): mixing the composite material obtained in the step (1) with 6 parts of Tween 80, 7 parts of kieselguhr, 8 parts of AC foaming agent and 3 parts of zinc oxide raw materials in an open mill at the temperature of 50 ℃ for 0.5h to obtain P I/EVA foaming mixed raw materials;
step (24): placing the P I/EVA foaming mixed raw material obtained in the step (23) into a foaming chamber of a die device in a die pressing foaming device, and introducing CO into the foaming chamber2Gas is exhaustedPressurizing and heating with air, molding at 215 deg.C and 11MPa for 17 min, and rapidly releasing CO (3MPa/s)2Cooling and shaping to obtain a flat P I/EVA foam layer;
wherein, the prepared P I/EVA foam layer has the thermal conductivity coefficient of 0.025W/m.K, the flame resistance of V-0 grade, the moisture absorption rate of 1.2 percent and the compression set of 5.4 percent.
Comparative example 1
The comparative example is an existing polyurethane color steel plate.
Test examples
The performance tests of the environment-friendly color steel plates prepared in examples 1 to 3 and the existing polyurethane color steel plate in comparative example 1 show that the detection results are shown in table 1:
TABLE 1
Figure BDA0003569758310000101
As can be seen from Table 1, the purified and environment-friendly color steel plates prepared in the embodiments 1-3 of the invention have good heat insulation performance and fireproof performance, and meet or even exceed the requirements of common color steel plates on fireproof and heat preservation characteristics; this shows that the excellent heat insulation and flame retardant effects of the P I/EVA foam layer material in examples 1-3 not only effectively enhance the heat insulation performance of the environment-friendly color steel plate of examples 1-3, but also improve the fire-retardant rating of the color steel plate;
the sound absorption coefficients of the environment-friendly and clean color steel plates of examples 1 to 3 and the existing polyurethane color steel plate of comparative example 1 were measured by a standing wave tube method, and it can be seen from table 1 that at a frequency of 250Hz, the sound absorption coefficient of the environment-friendly and clean color steel plate prepared in examples 1 to 2 is 0.84, the sound absorption coefficient of example 3 is 0.83, while the sound absorption coefficient of comparative example 1 is 0.27, and the sound absorption effect of the environment-friendly and clean color steel plate prepared in examples 1 to 3 is better at a frequency of 250Hz, and the sound absorption coefficient is 0.92 at most; this shows that in the embodiments 1-3, the mesh structures of the microglass fibers in the first sound-absorbing fiberboard layer and the second sound-absorbing fiberboard layer can effectively absorb the vibration and sound energy transmitted to the material, and the mixture of bamboo charcoal powder and activated charcoal powder is filled in the mesh structures of the microglass fiber core material, so that the sound-absorbing effect of the sound-absorbing fiberboard layer is further enhanced, and the effects of purifying the air environment and adsorbing pollutants are also achieved;
in addition, the sound-absorbing fiberboard layer which is formed by taking the superfine glass fiber as the core material and taking the carbon fiber as the panel also has good heat-insulating property, and the heat-insulating effect of the color steel plate is improved in an auxiliary way;
compared with the existing polyurethane color steel plate in comparative example 1, the purifying environment-friendly color steel plates prepared in examples 1 to 3 have more excellent bending resistance bearing capacity, and the specific values all reach 1.30kN/m2The bending resistance bearing capacity is obviously higher than that of comparative example 1 by 1.05kN/m2(ii) a The first sound absorption fiber board layer, the P I/EVA foam layer and the second sound absorption fiber board layer are fixed in an adhesion mode, and the mechanical performance and the adhesion stability of the purification color steel plate of the embodiment 1-3 are obviously enhanced.
Example 4
For areas with strong rainwater in the south, a laminating machine can be used for laminating a PC/PTFE film on the outer side of the first color steel plate base layer in a vacuum manner to obtain a first color steel plate base layer with the PC/PTFE film adhered on the surface, and on the basis of the embodiment 1, a purifying environment-friendly color steel plate (as shown in FIG. 2) is obtained according to the preparation method in the embodiment 1;
the preparation process of the PC/PTFE film comprises the following steps: sputtering and plating a PTFE (polytetrafluoroethylene) super-hydrophobic film on the surface of the PC substrate film by a radio frequency magnetron sputtering method to obtain a PC/PTFE film; wherein the thickness of the PC/PTFE film is 0.3 mm;
the PC substrate film is composed of 92% of polycarbonate resin, 4.5% of zinc oxide, 1% of silane coupling agent KH550, 1.5% of antioxidant 168 and 1% of flame retardant BDP raw materials.
The purification and environment-friendly color steel plates prepared in the examples 1 and 4 and the existing polyurethane color steel plate in the comparative example 1 are subjected to related performance tests, and the detection results are shown in the table 2:
TABLE 2
Figure BDA0003569758310000121
The working principle and the beneficial effects of the embodiment are as follows: the purifying environment-friendly color steel plate prepared by the embodiment of the invention not only has the effects of shielding ultraviolet rays and enhancing illumination aging resistance, but also can reduce the erosion of rain wash to the color steel plate, and avoid the phenomenon that water in a humid external environment is attached to the surface of the color steel plate or permeates into the color steel plate, thereby effectively prolonging the service life of the purifying environment-friendly color steel plate and expanding the application field.
Example 5
For the purpose of saving energy and reducing consumption of air conditioners for assisting air purification in large public buildings, on the basis of embodiment 4, the second color steel plate base layer is set to be a micro louver-shaped color steel plate base layer, and a titanium dioxide purification film is formed on the surface of the micro louver-shaped second color steel plate base layer by sputtering through a radio frequency magnetron sputtering method; wherein the thickness of the titanium dioxide purification film is 100 nm;
after the clean and environment-friendly color steel plate is manufactured according to the steps (1) to (5) in the embodiment 1, the manufactured clean and environment-friendly color steel plate is further fixed by the anchor bolt (as shown in fig. 3).
In the same environment with the space size of 2m multiplied by 1.6m multiplied by 1.8m, air pollutants such as dust and the like with the same degree are artificially produced, the room body is assembled by using the purifying environment-friendly color steel plates prepared in the examples 4 and 5 and the existing polyurethane color steel plate in the comparative example 1, experiments are carried out under the same conditions, and indoor air quality change and indoor temperature change under working conditions in summer and winter are simulated respectively; wherein, detect indoor air quality through air detector, the indoor temperature is gathered to the thermometer, and the testing result sees table 3:
TABLE 3
Figure BDA0003569758310000131
The working principle and the beneficial effects of the embodiment are as follows: the purification environment-friendly color steel plate prepared in the embodiment has a more excellent heat preservation effect, keeps the indoor temperature stable, and meanwhile, has the purification performance of the indoor environment obviously superior to the existing polyurethane color steel plate in comparative example 1 and superior to the purification environment-friendly color steel plate prepared in embodiment 4; this shows that, in this embodiment, the second color steel plate base layer is set to be a micro louver, which is beneficial to purifying the environment-friendly color steel plate to adsorb pollutants in the air and better achieve the purpose of purifying the air under the condition that natural wind exists indoors; in addition, the titanium dioxide purification film on the surface of the base layer of the miniature louver-shaped second color steel plate can effectively degrade formaldehyde and other substances in the air, further assists the color steel plate prepared by the invention to play a role in purifying the air environment, and also realizes the purposes of energy conservation and consumption reduction of buildings.
Example 6
In the step (5), the composite board is pressed, and the magnitude of the pressure is determined by the following formula method:
Figure BDA0003569758310000141
wherein C is a pressure constant and takes 1-10 MPa;
Ktthe value of the pressing time coefficient is 0.2-0.6;
TWis the thickness of the first sound absorbing fiberboard;
TZis the thickness of the PI/EVA foam layer;
TMis the thickness of the second sound absorbing fiberboard layer;
TRis the thickness of the purifying environment-friendly color steel plate.
The working principle and the beneficial effects of the embodiment are as follows: the method for pressing the composite function plate in the forming process is determined based on the thickness of each layer of material of the color steel plate, the thickness of the target purifying environment-friendly color steel plate and the pressing time, the purifying environment-friendly color steel plate pressed and formed by the method in the embodiment of the invention effectively ensures the stability of the quality of the purifying color steel plate, and avoids the bad quality problems of collapse and the like of each layer in the color steel plate caused by overlarge pressure, thereby influencing the effects of sound absorption, sound insulation, heat insulation and heat preservation; and the current situation that the actual application is influenced because the pressure is too low and the effect of further adhering, curing, purifying and environment-friendly color steel plates cannot be achieved is also avoided.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. The purifying and environment-friendly color steel plate is characterized by comprising a first color steel plate base layer, a first sound-absorbing fiber plate layer, a PI/EVA foam layer, a second sound-absorbing fiber plate layer and a second color steel plate base layer which are sequentially arranged from outside to inside;
the preparation method of the purifying environment-friendly color steel plate comprises the following steps:
step (1): placing a first color steel plate base layer in a mold, and attaching and placing one side of a first sound absorption fiber board layer with two sides fully coated with resin adhesive on the first color steel plate base layer;
step (2): preparing a PI/EVA foam layer, and attaching one side of the prepared PI/EVA foam layer to the other side of the first sound absorption fiberboard layer;
and (3): attaching one side of a second sound-absorbing fiberboard layer with two sides coated with resin adhesive to the other side of the PI/EVA foam layer;
and (4): attaching one side of a second color steel plate base layer to the other side of the second sound-absorbing fiberboard layer to obtain a composite board;
and (5): and (3) before the resin adhesive is cured, pressing the composite board obtained in the step (4) for 0.5-1h under the condition of 0.5-4MPa, and further bonding the first color steel plate base layer, the first sound absorption fiber board layer, the PI/EVA foam layer, the second sound absorption fiber board layer and the second color steel plate base layer to obtain the purifying and environment-friendly color steel plate.
2. The purifying environment-friendly color steel plate as claimed in claim 1, wherein the first color steel plate base layer and the second color steel plate base layer are both 5mm thick; the thickness of the first sound absorption fiber board layer and the thickness of the second fiber board layer are both 10-35 mm; the thickness of the PI/EVA foam layer is 30-50 mm.
3. The purifying environment-friendly color steel plate as claimed in claim 1, wherein the coating thickness of the resin glue is 0.5-1 mm; the resin adhesive is phenolic resin adhesive or epoxy resin AB adhesive.
4. The purifying and environment-friendly color steel plate as claimed in claim 1, wherein the sound-absorbing fiber plate layer comprises an upper carbon fiber panel, a core material of ultra-fine glass fiber and a lower carbon fiber panel which are sequentially arranged from outside to inside.
5. The purifying environment-friendly color steel plate as claimed in claim 4, wherein the mesh structure of the ultrafine glass fiber core material is filled with a mixture of bamboo charcoal powder and activated carbon powder, wherein the mass ratio of the bamboo charcoal powder to the activated carbon powder is 1-3: 2-5; the mesh number of the bamboo charcoal powder is 800 meshes, and the mesh number of the activated charcoal powder is 400 meshes.
6. The purifying environment-friendly color steel plate as claimed in claim 1, wherein the PI/EVA foam layer comprises the following raw material components in parts by weight: 65-90 parts of PI, 30-40 parts of flame-retardant EVA, 15-30 parts of superfine glass fiber, 2-5 parts of silane coupling agent KH550, 2-7 parts of Tween 80, 8-15 parts of diatomite, 3-10 parts of AC foaming agent and 2-3 parts of zinc oxide.
7. The purifying environment-friendly color steel plate as claimed in claim 6, wherein the PI/EVA foam layer comprises the following preparation steps:
a step (21): adding PI, flame-retardant EVA, superfine glass fiber and silane coupling agent KH550 into a stirrer, and mixing and stirring for 0.5h at the temperature of 40-50 ℃ and the rotating speed of 50-80rpm to obtain a mixed raw material;
step (22): placing the mixed raw material obtained in the step (21) into a double-screw extruder, performing melt extrusion at the extrusion temperature of 175-190 ℃ and at the speed of 65-70rpm, cooling with water, and performing granulation to obtain a composite material;
step (23): mixing the composite material obtained in the step (22) with Tween 80, diatomite, an AC foaming agent and zinc oxide in parts by weight in an open mill at the temperature of 50 ℃ for 0.5-1h to obtain a PI/EVA foaming mixed raw material;
step (24): putting the PI/EVA foaming mixed raw material obtained in the step (23) into a foaming chamber of a die device in a die pressing foaming device, and introducing CO into the foaming chamber2Pressurizing and heating the gas, molding the mixture for 15-20min at the temperature of 215 ℃ and 220 ℃ and under the pressure of 10-12MPa, and quickly releasing pressure to release CO2And cooling and shaping to obtain a flat PI/EVA foam layer.
8. The purifying environment-friendly color steel plate as claimed in claim 1, wherein a PC/PTFE film is further attached to the outer side of the first color steel plate base layer;
the preparation process of the PC/PTFE film comprises the following steps:
sputtering and plating a PTFE (polytetrafluoroethylene) super-hydrophobic film on the surface of the PC substrate film by a radio frequency magnetron sputtering method to obtain a PC/PTFE film;
wherein the thickness of the PC/PTFE film is 0.25-0.5 mm;
the PC substrate film consists of 89.5-95% of polycarbonate resin, 3-6% of zinc oxide, 0.5-1.5% of silane coupling agent KH550, 0.8-1.5% of antioxidant 168 and 0.7-1.5% of flame retardant BDP raw materials.
9. The purifying environment-friendly color steel plate as claimed in claim 1, wherein the second color steel plate base layer is configured as a micro-louver-shaped color steel plate base layer, and a titanium dioxide purifying film is formed on the surface of the micro-louver-shaped second color steel plate base layer by sputtering through a radio frequency magnetron sputtering method; wherein the thickness of the titanium dioxide purification film is 50-120 nm;
and (3) after the purifying and environment-friendly color steel plate is prepared according to the steps (1) to (5), further fixing the prepared purifying and environment-friendly color steel plate through anchor bolts.
10. The purifying environment-friendly color steel plate according to claim 1, wherein the color steel plate is applied to walls and roofs of civil buildings, industrial plants, steel structure houses, large public buildings and integrated houses.
CN202210318856.8A 2022-03-29 2022-03-29 Purify various steel sheet of environment-friendly Pending CN114734704A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003049265A (en) * 2001-08-08 2003-02-21 Toto Ltd Film deposition method for photocatalytic titanium dioxide film
KR20060038862A (en) * 2004-11-01 2006-05-04 대림산업 주식회사 Nonflammable foamed thermoplastic material and method for producing the same
CN106280377A (en) * 2016-08-31 2017-01-04 上海联博安防器材股份有限公司 Fire-retardant light stablizes Merlon and preparation method thereof
CN107267946A (en) * 2017-07-26 2017-10-20 鲁东大学 A kind of flexible low radiation fenestrated membrane and preparation method thereof
CN109501397A (en) * 2018-11-20 2019-03-22 华侨大学 A kind of cellular composite material
CN110549698A (en) * 2019-09-04 2019-12-10 江苏中电创达建设装备科技有限公司 composite sandwich color steel plate
CN212787975U (en) * 2020-05-20 2021-03-26 江苏无锡欧派集成家居有限公司 Self-absorbing formaldehyde's odorless furniture board

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003049265A (en) * 2001-08-08 2003-02-21 Toto Ltd Film deposition method for photocatalytic titanium dioxide film
KR20060038862A (en) * 2004-11-01 2006-05-04 대림산업 주식회사 Nonflammable foamed thermoplastic material and method for producing the same
CN106280377A (en) * 2016-08-31 2017-01-04 上海联博安防器材股份有限公司 Fire-retardant light stablizes Merlon and preparation method thereof
CN107267946A (en) * 2017-07-26 2017-10-20 鲁东大学 A kind of flexible low radiation fenestrated membrane and preparation method thereof
CN109501397A (en) * 2018-11-20 2019-03-22 华侨大学 A kind of cellular composite material
CN110549698A (en) * 2019-09-04 2019-12-10 江苏中电创达建设装备科技有限公司 composite sandwich color steel plate
CN212787975U (en) * 2020-05-20 2021-03-26 江苏无锡欧派集成家居有限公司 Self-absorbing formaldehyde's odorless furniture board

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