CN114368400A - Light environment-friendly high-speed rail interior side wall plate and low-cost preparation method thereof - Google Patents
Light environment-friendly high-speed rail interior side wall plate and low-cost preparation method thereof Download PDFInfo
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- CN114368400A CN114368400A CN202210059712.5A CN202210059712A CN114368400A CN 114368400 A CN114368400 A CN 114368400A CN 202210059712 A CN202210059712 A CN 202210059712A CN 114368400 A CN114368400 A CN 114368400A
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- window frame
- speed rail
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/001—Producing wall or panel-like structures, e.g. for hulls, fuselages, or buildings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
- B61D17/048—Interior walls, e.g. separation walls between compartments
Abstract
The invention provides a high-speed rail interior side wall plate, wherein a side wall plate main body comprises a side wall plate, a window frame and a sunshade curtain groove; the side wall plate, the window frame and the sunshade curtain groove are made of thermoplastic composite materials; the thermoplastic composite material comprises a halogen-free flame retardant plastic alloy. The light environment-friendly high-speed rail interior side wall board main body provided by the invention can be formed in a die-splitting mode and then assembled into the side wall board main body through a welding process. The invention uses thermoplastic plastic alloy resin, the leftover materials and the retired side wall boards in the process can be recycled, and the product is environment-friendly. Meanwhile, the shock resistance is excellent, and the durability is improved; and the thermoplastic composite material with color and texture can meet the requirement of surface decoration of the side wall board, the paint-free production of the interior side wall board is realized, no aldehyde, low odor and low VOC are generated, and the environmental protection property can be further improved. The invention can also realize the weight reduction of the side wall plate to the maximum extent by designing and using the material thickness and density difference of different parts of the side wall plate.
Description
Technical Field
The invention belongs to the technical field of high-speed rail interior materials, relates to a high-speed rail interior side wallboard, and a preparation method and application thereof, and particularly relates to a light environment-friendly high-speed rail interior side wallboard, and a low-cost preparation method and application thereof.
Background
The interior side wall board is the part which is most contacted with passengers in the interior of the railway vehicle, and integrates the decoration and the functionality into a whole. On one hand, the side wall plate is required to have high strength and good impact resistance; on the other hand, the side wall board has high requirements on the performances of beauty, easy cleaning, scratch resistance and the like. With the development of high-speed and energy-saving high-speed rail transportation, the self weight of the rail vehicle is required to be small, and the lightweight design of the interior side wall panel as a covering with the largest area in the interior of the rail vehicle is more and more important. Meanwhile, the special characteristics (large passenger flow, long time distance, closed environment and the like) of the transportation of the high-speed rail also put higher requirements on the use safety (environmental protection and fire prevention) of the side wall plate.
The typical side wall plate structure of the rail transit interior trim comprises four parts, namely a side wall plate main body, functional accessories (a hat hook, a sun-shading curtain and the like), an air duct and an installation supporting member from a passenger contact surface to the inside. This patent is mainly to the research of the lateral wall board main part development. At present, the main body of the high-speed rail interior side wall plate mainly comprises glass fiber reinforced plastics. The glass fiber reinforced plastic side wall plate is formed by a glass fiber reinforced plastic process to form a side wall plate semi-finished product, namely inorganic fibers (usually glass fibers) impregnated with thermosetting resin are solidified into a side wall plate shape by utilizing a mold; then it is subjected to a post-treatment (cutting, grinding, etc.) and finally to a surface treatment (painting or application of a decorative film). The thermosetting resin in the glass fiber reinforced plastic process comprises unsaturated polyester resin, vinyl resin, polyurethane resin, epoxy resin, phenolic resin and other resins, the inorganic fiber is mainly glass fiber, and the form of the inorganic fiber is fiber felt and fiber fabric according to the process requirements.
Although the glass fiber reinforced plastic side wall plate has good strength and can meet the mechanical requirements of high-speed rail interior installation, the following problems still exist: 1. the thermosetting resin has poor environmental protection, and the leftover materials and the retired side wall boards in the production process can not be recycled. 2. The residual resin component and the subsequent surface treatment process can cause environmental protection problems of large smell, excessive formaldehyde and organic volatile matters and the like in a railway carriage 3. the weight is large, the thickness of the glass fiber reinforced plastic side wall plate which meets the mechanical and fireproof requirements at present is not less than 3mm, and the density is 1800kg/m3This is disadvantageous in light weight design. 4. The side wall plate formed by adopting the glass fiber reinforced plastic process has the disadvantages of complex process, low production efficiency, poor production environment and environmental friendliness.
Therefore, how to find a more suitable side wall plate, which solves the above problems of the conventional high-speed rail side wall plate, has become one of the problems to be solved urgently by the domestic high-speed rail train production enterprises and the front-line researchers.
Disclosure of Invention
In view of this, the technical problem to be solved by the present invention is to provide a high-speed rail interior side wall panel, a manufacturing method thereof, and an application thereof, in particular, a light environment-friendly high-speed rail interior side wall panel. The invention provides a side wall board taking a thermoplastic composite material as a main body structure. The thermoplastic side wall board has light weight, good shock resistance and no aldehyde and low VOC, can realize high-efficiency production by utilizing the traditional plastic forming process, and is very beneficial to the application and popularization in vehicles and rail transit in the high-speed train manufacturing industry and the like.
The invention provides a high-speed rail interior side wall plate, wherein a side wall plate main body comprises a side wall plate, a window frame and a sunshade curtain groove;
the side wall plate, the window frame and the sunshade curtain groove are made of thermoplastic composite materials;
the thermoplastic composite material comprises a halogen-free flame retardant plastic alloy.
Preferably, the halogen-free flame-retardant plastic alloy comprises two or more of polycarbonate, acrylonitrile-butadiene-styrene copolymer, polyethylene and polyetherimide;
the oxygen index of the halogen-free flame-retardant plastic alloy is more than or equal to 28 percent.
Preferably, the thermoplastic composite material is a thermoplastic composite plate;
the original thickness of the thermoplastic composite board is 2.5-6 mm;
the density of the thermoplastic composite material is 1.15-1.42 g/cm3。
Preferably, the side wall plate, the window frame and the sunshade screen groove are respectively made of thermoplastic composite plates with the same or different thicknesses;
the side wall plate, the window frame and the sunshade screen groove are respectively made of thermoplastic composite plates with the same or different densities.
Preferably, the side wall plate, the window frame and the sunshade curtain groove are respectively formed by independent dies;
the side wall plate, the window frame and the sunshade screen groove are combined in a welding mode;
the welding means includes ultrasonic welding.
The invention provides a preparation method of a high-speed rail interior side wallboard, which comprises the following steps:
1) pretreating an original thermoplastic composite material plate to obtain a crude product;
2) respectively carrying out independent plastic uptake molding on the crude products obtained in the step to obtain a semi-finished product of the side wall plate, a semi-finished product of the window frame and a semi-finished product of the sunshade screen groove;
3) and respectively cutting and processing the semi-finished side wall plate, the semi-finished window frame and the semi-finished sunshade curtain slot obtained in the above steps, and then welding and assembling by ultrasonic waves to obtain the high-speed rail interior side wall plate main body.
Preferably, the thermoplastic composite starting sheet comprises a thermoplastic composite starting sheet with color and surface texture;
the pre-treatment comprises a drying and/or cutting step;
the crude products comprise crude products of the side wall plate, crude products of the window frame and crude products of the sunshade screen groove;
the side wall board crude product, the window frame crude product and the sunshade screen groove crude product are respectively of the same and/or different densities and/or thicknesses and are matched for use.
Preferably, the temperature of the plastic suction molding is 175-205 ℃;
the pressure of the plastic suction molding is 0.05-0.08 MPa;
the cutting process comprises a water cutting process.
Preferably, the pressure of the water cutting processing is 250-400 Mpa;
the diameter of the inner hole of the nozzle processed by water cutting is 0.15-0.35 mm;
the jet speed of the water cutting processing is 800-1000 m/s;
the frequency of the ultrasonic welding is 15-20 KHz;
the amplitude of the ultrasonic welding is 20-40 mu m;
the ultrasonic welding time is 0.1-0.5 second;
the pressure of ultrasonic welding is 100-300N.
The invention also provides an application of the high-speed rail interior side wall panel in any one of the technical schemes or the high-speed rail interior side wall panel prepared by the preparation method in any one of the technical schemes in the aspects of vehicles or rail transit;
the specific location of the application includes interior siding.
The invention provides a high-speed rail interior side wall plate, wherein a side wall plate main body comprises a side wall plate, a window frame and a sunshade curtain groove; the side wall plate, the window frame and the sunshade curtain groove are made of thermoplastic composite materials; the thermoplastic composite material comprises a halogen-free flame retardant plastic alloy. Compared with the prior art, the invention aims at the problems that the existing high-speed rail interior side wallboard is poor in thermosetting resin environmental protection property, and the leftover materials and the retired side wallboard cannot be recycled; the environmental protection problems of large smell, excessive formaldehyde and organic volatile matters and the like in the railway carriage are caused; the weight is large, the thickness is not less than 3mm, and the density is 1800kg/m3Above, the limitation of light weight design is not facilitated; and the problems of complex process for preparing the side wall plate, low production efficiency, poor production environment, no contribution to environmental protection and the like.
The invention creatively designs an environment-friendly high-speed rail interior side wall plate which has a specific structure and composition and takes a thermoplastic composite material as a main structure, and a low-cost forming process thereof. The light environment-friendly high-speed rail interior side wall plate main body provided by the invention consists of three parts, namely a side wall plate, a window frame and a sunshade groove, wherein the three parts are formed in a die-splitting mode and then assembled into the side wall plate main body through a welding process. The invention uses the thermoplastic plastic alloy resin as the raw material, the leftover materials and the retired side wall boards in the process can be recycled, and the product is environment-friendly. Meanwhile, the main body of the side wall plate is completely prepared from the thermoplastic plastic alloy resin material, so that the thermoplastic plastic alloy material has excellent impact resistance, and the durability of the side wall plate is improved; and the thermoplastic composite material with color and surface texture can meet the requirement of surface decoration of the side wall board, the paint-free production of the interior side wall board is realized, no aldehyde, low odor and low VOC are generated, and the environmental protection property can be further improved. The invention can also realize the weight reduction of the side wall plate to the maximum extent by designing and using the material thickness and density difference of different parts of the side wall plate.
In the preparation process, the side wall plate main body is prepared by thermoplastic plates with colors and surface textures through a plastic suction process, the plastic suction process is adopted, the process is simple, the production efficiency is high, the maneuverability is good, the design change resistance is strong, the designability is strong by adopting a mode of split mold forming, and on one hand, for the product, the light weight design can be further realized by adjusting the material thickness and density matching of different parts; on the other hand, the die can be simplified and the production cost can be reduced.
The environment-friendly high-speed rail interior side wall board and the low-cost forming process thereof further meet the requirements that the existing high-speed rail interior side wall board is high in strength and good in impact resistance, is developed in the direction of thinning and lightening, also meets the development direction of paying more attention to the environment protection property of rail interior along with the development of rail transit, and has wide application prospects in the field of high-speed rails.
Experimental results show that the environment-friendly high-speed rail interior side wallboard prepared by the invention is light in weight and has the density lower than 1.4g/cm3(ii) a Has better mechanical property: tensile strength is more than or equal to 40MPa, and impact toughness (without gaps) is more than or equal to 10KJ/m2(ii) a Meanwhile, the fireproof requirements of EN 45545-2R 1 and the environmental protection requirements of SJTY-ZT-002 can be met.
Drawings
Fig. 1 is a schematic structural view of a lightweight environment-friendly high-speed rail interior side wall panel provided by the invention.
Detailed Description
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the invention, and not to limit the scope of the claims.
All of the starting materials of the present invention, without particular limitation as to their source, may be purchased commercially or prepared according to conventional methods well known to those skilled in the art.
All the raw materials of the present invention are not particularly limited in their purity, and the present invention preferably adopts a purity that is conventional in the field of the preparation of industrial pure or high-iron interior materials.
All the raw materials, the marks and the acronyms thereof belong to the conventional marks and acronyms in the field, each mark and acronym is clear and definite in the field of related application, and the raw materials can be purchased from the market or prepared by a conventional method by the technical staff in the field according to the marks, the acronyms and the corresponding application.
All the processes of the invention, the abbreviations thereof belong to the common abbreviations in the art, each abbreviation is clear and definite in the field of its associated use, and the ordinary process steps thereof can be understood by those skilled in the art from the abbreviations.
The invention provides a high-speed rail interior side wall plate, wherein a side wall plate main body comprises a side wall plate, a window frame and a sunshade curtain groove;
the side wall plate, the window frame and the sunshade curtain groove are made of thermoplastic composite materials;
the thermoplastic composite material comprises a halogen-free flame retardant plastic alloy.
In the present invention, the halogen-free flame retardant plastic alloy preferably comprises two or more of polycarbonate, acrylonitrile-butadiene-styrene copolymer, polyethylene, and polyetherimide, and more preferably two of polycarbonate, acrylonitrile-butadiene-styrene copolymer, polyethylene, and polyetherimide.
In the present invention, the oxygen index of the halogen-free flame retardant plastic alloy is preferably equal to or more than 28%, more preferably equal to or more than 29%, and more preferably equal to or more than 30%.
In the invention, the flame retardant property of the halogen-free flame retardant plastic alloy meets the requirements of HL2 in EN 45545-2R 1 vehicle material fireproof flame retardant smoke toxicity test items and standards.
In the present invention, the thermoplastic composite material is preferably a thermoplastic composite sheet material.
In the present invention, the original thickness of the thermoplastic composite sheet is preferably 2.5mm to 6mm, more preferably 3mm to 5.5mm, more preferably 3.5mm to 5mm, and more preferably 4mm to 4.5 mm.
In the invention, the density of the thermoplastic composite material is preferably 1.15-1.42 g/cm3More preferably 1.2 to 1.35g/cm3More preferably 1.25 to 1.3g/cm3。
In the present invention, the side wall panels, the window frames and the sunshade grooves are preferably made of thermoplastic composite boards with the same or different thicknesses.
In the present invention, the side wall panels, the window frames and the sunshade grooves are preferably made of thermoplastic composite boards having the same or different densities.
In the present invention, the side wall panels, the window frame and the shade slot are preferably formed in separate molds.
In the present invention, the bonding means between the side wall panel, the window frame and the blind groove preferably comprises a welded bond.
In the present invention, the welding means preferably includes ultrasonic welding.
The invention provides a light environment-friendly high-speed rail interior side wall board which is prepared from a thermoplastic composite material. The thermoplastic composite material is a halogen-free flame-retardant plastic alloy prepared by adopting a secondary processing modification technical route, a physical and chemical modification method and a novel optimization treatment technology. Wherein the resin of the plastic alloy is a combination of two or more of Polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), Polyethylene (PE) and Polyetherimide (PES), and the PC/ABS combination is preferred. The density of the thermoplastic composite material is 1.15g/cm3～1.42g/cm3Preferably 1.19g/cm3～1.32g/cm3. The initial thickness of the sheet of thermoplastic composite material is 2.5mm to 6mm, preferably 3mm to 5 mm.
The invention provides a preparation method of a high-speed rail interior side wallboard, which comprises the following steps:
1) pretreating an original thermoplastic composite material plate to obtain a crude product;
2) respectively carrying out independent plastic uptake molding on the crude products obtained in the step to obtain a semi-finished product of the side wall plate, a semi-finished product of the window frame and a semi-finished product of the sunshade screen groove;
3) and respectively cutting and processing the semi-finished side wall plate, the semi-finished window frame and the semi-finished sunshade curtain slot obtained in the above steps, and then welding and assembling by ultrasonic waves to obtain the high-speed rail interior side wall plate main body.
The method comprises the steps of firstly preprocessing a thermoplastic composite material original plate to obtain a crude product.
In the present invention, the thermoplastic composite starting sheet preferably comprises a thermoplastic composite starting sheet having a color and a surface texture.
In the present invention, the pretreatment preferably comprises a drying and/or cutting step, more preferably a drying or cutting step.
In the present invention, the crude products preferably include crude products of side wall panels, crude products of window frames, and crude products of shade slots.
In the invention, the crude side wall plate, the crude window frame and the crude sunshade curtain groove are preferably the same in density and/or different in thickness respectively, and are matched for use, and more preferably are the same in density or different in thickness.
The semi-finished products of the side wall plate, the window frame and the sunshade curtain groove are obtained after the crude products obtained in the above steps are respectively subjected to independent plastic suction molding.
In the invention, the temperature of the plastic suction molding is preferably 175-205 ℃, more preferably 180-200 ℃, and more preferably 185-195 ℃.
In the invention, the pressure of the plastic suction molding is preferably 0.05-0.08 MPa, more preferably 0.055-0.075 MPa, and more preferably 0.06-0.07 MPa.
Finally, respectively cutting and processing the semi-finished side wall plate, the semi-finished window frame and the semi-finished sunshade curtain slot obtained in the above steps, and then welding and assembling by ultrasonic waves to obtain the high-speed rail interior side wall plate main body.
In the present invention, the cutting process preferably includes a water cutting process.
In the invention, the pressure of the water cutting processing is preferably 250-400 Mpa, more preferably 280-370 Mpa, and more preferably 310-340 Mpa.
In the invention, the diameter of the inner hole of the nozzle processed by water cutting is preferably 0.15-0.35 mm, more preferably 0.19-0.31 mm, and more preferably 0.23-0.27 mm.
In the invention, the jet speed of the water cutting processing is preferably 800-1000 m/s, more preferably 840-960 m/s, and more preferably 880-920 m/s.
In the invention, the frequency of the ultrasonic welding is preferably 15-20 KHz, more preferably 16-19 KHz, and more preferably 17-18 KHz.
In the present invention, the amplitude of the ultrasonic welding is preferably 20 to 40 μm, more preferably 24 to 36 μm, and still more preferably 28 to 32 μm.
In the present invention, the time for the ultrasonic welding is preferably 0.1 to 0.5 seconds, more preferably 0.15 to 0.45 seconds, more preferably 0.2 to 0.4 seconds, and more preferably 0.25 to 0.35 seconds.
In the invention, the pressure of the ultrasonic welding is preferably 100-300N, more preferably 140-260N, and more preferably 180-220N.
The invention provides a preparation method of a light environment-friendly high-speed rail interior side wall board, which comprises three parts, namely a side wall board, a window frame and a sunshade curtain groove, wherein the three parts are formed in a split mold mode and assembled into a side wall board main body through a welding process. The designability of the split-die forming is strong, the density and mechanical property correlation influence of the whole side wall plate is realized by adjusting the material thickness and density of different parts, and the lightweight design of the side wall plate is further realized.
The invention adopts a vacuum forming process to prepare the thermoplastic side wall board main body, and the specific process flow is as follows: firstly, carrying out pretreatment (high-temperature drying and size cutting treatment) on a thermoplastic composite material original plate with colors and surface textures; respectively carrying out plastic suction molding on semi-finished products of the side wall plate (1), the window frame (2) and the sunshade groove (3) by using plastic suction equipment; thirdly, cutting the semi-finished products of the side wall plate (1), the window frame (2) and the sunshade curtain groove (3) for standby through a water cutting processing technology; and fourthly, placing the cut side wall board (1), the window frame (2) and the sunshade curtain groove (3) into a positioning tool, and respectively carrying out welding and assembling by utilizing ultrasonic waves to obtain the light environment-friendly high-speed rail interior side wall board main body.
Referring to fig. 1, fig. 1 is a schematic structural view of a lightweight environment-friendly high-speed rail interior side wall panel provided by the invention. Wherein, 1 is the side wall board, 2 is the window frame, and 3 is the sunshade screen groove.
The invention provides an application of the high-speed rail interior side wall panel in the technical scheme or the high-speed rail interior side wall panel prepared by the preparation method in any one of the technical schemes in the aspect of vehicle or rail transit;
in the present invention, the specific location of the application preferably includes interior siding.
The invention provides a light environment-friendly high-speed rail interior side wallboard, and a low-cost preparation method and application thereof. The invention relates to an environment-friendly high-speed rail interior side wall plate which has a specific structure and composition and takes a thermoplastic composite material as a main body structure. The high-speed rail interior side wall board main body is composed of three parts, namely a side wall board, a window frame and a sunshade curtain groove, wherein the three parts are formed in a die parting mode and then assembled into the side wall board main body through a welding process. The invention uses the thermoplastic plastic alloy resin as the raw material, the leftover materials and the retired side wall boards in the process can be recycled, and the product is environment-friendly. Meanwhile, the main body of the side wall plate is completely prepared from the thermoplastic plastic alloy resin material, so that the thermoplastic plastic alloy material has excellent impact resistance, and the durability of the side wall plate is improved; and the thermoplastic composite material with color and surface texture can meet the requirement of surface decoration of the side wall board, the paint-free production of the interior side wall board is realized, no aldehyde, low odor and low VOC are generated, and the environmental protection property can be further improved. The invention can also realize the weight reduction of the side wall plate to the maximum extent by designing and using the material thickness and density difference of different parts of the side wall plate.
In the preparation process, the side wall plate main body is prepared by thermoplastic plates with colors and surface textures through a plastic suction process, the plastic suction process is adopted, the process is simple, the production efficiency is high, the maneuverability is good, the design change resistance is strong, the designability is strong by adopting a mode of split mold forming, and on one hand, for the product, the light weight design can be further realized by adjusting the material thickness and density matching of different parts; on the other hand, the die can be simplified and the production cost can be reduced.
The environment-friendly high-speed rail interior side wall board and the low-cost forming process thereof further meet the requirements that the existing high-speed rail interior side wall board is high in strength and good in impact resistance, is developed in the direction of thinning and lightening, also meets the development direction of paying more attention to the environment protection property of rail interior along with the development of rail transit, and has wide application prospects in the field of high-speed rails.
Experimental results show that the environment-friendly high-speed rail interior side wallboard prepared by the invention is light in weight and has the density lower than 1.4g/cm3(ii) a Has better mechanical property: tensile strength is more than or equal to 40MPa, and impact toughness (without gaps) is more than or equal to 10KJ/m2(ii) a Meanwhile, the fireproof requirements of EN 45545-2R 1 and the environmental protection requirements of SJTY-ZT-002 can be met.
In order to further illustrate the present invention, the high-speed railway interior side wall panel and the preparation method and application thereof are described in detail with reference to the following examples, but it should be understood that the examples are implemented on the premise of the technical solution of the present invention, and the detailed embodiments and specific operation procedures are given, only for further illustrating the features and advantages of the present invention, but not for limiting the claims of the present invention, and the scope of the present invention is not limited to the following examples.
Example 1
Preprocessing an original plate: firstly, the thickness is 5.0mm and 4.0mm, and the density is 1.26g/cm3The PC/ABS plate is dried at high temperature for standby; secondly, plastic uptake of the side wall plate (1): selecting a PC/ABS plate with the thickness of 5.0mm for plastic suction molding; ③ the window frame (2) is plastic-absorbing: selecting a PC/ABS plate with the thickness of 4.0mm for plastic suction molding; fourthly, plastic uptake of the sunshade curtain groove (3): selecting a PC/ABS plate with the thickness of 4.0mm for plastic suction molding; cutting: putting the plastic-absorbed semi-finished product into a specific positioning tool, and cutting and processing by using water; sixthly, assembling components: putting the cut finished product parts into a positioning tool, and welding and assembling the parts into the side wall by using ultrasonic wavesA plate main body; the density of the main body of the side wall board is 1.19g/cm3。
The detection result shows that the density of the environment-friendly high-speed rail interior side wallboard prepared in the embodiment 1 of the invention is 1.19g/cm3(ii) a Tensile strength: 48MPa, impact toughness (unnotched): 15KJ/m2(ii) a Meanwhile, the fireproof paint can meet the HL2 fireproof requirement of EN 45545-2R 1 and the environmental protection requirement of SJTY-ZT-002.
Example 2
Preprocessing an original plate: firstly, the thickness is 4.5mm, and the density is 1.32g/cm3And a thickness of 4.0mm and a density of 1.26g/cm3The PC/ABS plate is dried at high temperature for standby; secondly, plastic uptake of the side wall plate (1): selecting the material with the thickness of 4.5mm and the density of 1.32g/cm3Carrying out plastic suction molding on the PC/ABS plate; ③ the window frame (2) is plastic-absorbing: selecting the material with the thickness of 4.0mm and the density of 1.26g/cm3Carrying out plastic suction molding on the PC/ABS plate; fourthly, plastic uptake of the sunshade curtain groove (3): selecting the material with the thickness of 4.0mm and the density of 1.26g/cm3Carrying out plastic suction molding on the PC/ABS plate; cutting: putting the plastic-absorbed semi-finished product into a specific positioning tool, and cutting and processing by using water; sixthly, assembling components: placing the cut finished parts into a positioning tool, and welding and assembling the finished parts into a side wall plate main body by using ultrasonic waves; the density of the main body of the side wall board is 1.28g/cm3。
The detection result shows that the density of the environment-friendly high-speed rail interior side wallboard prepared in the embodiment 2 of the invention is 1.28g/cm3(ii) a Tensile strength: 55MPa, impact toughness (unnotched): 18KJ/m2(ii) a Meanwhile, the fireproof paint can meet the HL2 fireproof requirement of EN 45545-2R 1 and the environmental protection requirement of SJTY-ZT-002.
Example 3
Preprocessing an original plate: firstly, the thickness is 5.0mm and 4.0mm, and the density is 1.32g/cm3The PC/ABS plate is dried at high temperature for standby; secondly, plastic uptake of the side wall plate (1): selecting a PC/ABS plate with the thickness of 5.0mm for plastic suction molding; ③ the window frame (2) is plastic-absorbing: selecting a PC/ABS plate with the thickness of 4.0mm for plastic suction molding; fourthly, plastic uptake of the sunshade curtain groove (3): selecting a PC/ABS plate with the thickness of 4.0mm for plastic suction molding; cutting: placing the semi-finished product with the plastic suction into a specific positioning toolCutting with water; sixthly, assembling components: and placing the cut finished parts into a positioning tool, and welding and assembling the finished parts into the side wall plate main body by using ultrasonic waves.
The detection result shows that the density of the environment-friendly high-speed rail interior side wallboard prepared in the embodiment 3 of the invention is 1.3g/cm3(ii) a Tensile strength: 62MPa, impact toughness (unnotched): 21KJ/m2(ii) a Meanwhile, the fireproof paint can meet the HL2 fireproof requirement of EN 45545-2R 1 and the environmental protection requirement of SJTY-ZT-002.
The light environment-friendly high-speed rail interior side wall board provided by the invention and the low-cost preparation method and application thereof are provided. Having described in detail, the principles and embodiments of the present invention have been described herein using specific examples, which are intended to facilitate an understanding of the principles of the invention and their core concepts, including the best mode, and also to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention. The scope of the invention is defined by the claims and may include other embodiments that occur to those skilled in the art. Such other embodiments are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.
Claims (10)
1. A high-speed railway interior side wall panel is characterized in that the side wall panel main body comprises a side wall panel, a window frame and a sunshade groove;
the side wall plate, the window frame and the sunshade curtain groove are made of thermoplastic composite materials;
the thermoplastic composite material comprises a halogen-free flame retardant plastic alloy.
2. The high-speed rail interior siding of claim 1, wherein the halogen-free, flame-retardant plastic alloy comprises two or more of polycarbonate, acrylonitrile butadiene styrene, polyethylene, polyetherimide;
the oxygen index of the halogen-free flame-retardant plastic alloy is more than or equal to 28 percent.
3. The high-speed rail interior side wall panel of claim 1, wherein the thermoplastic composite is a thermoplastic composite board;
the original thickness of the thermoplastic composite board is 2.5-6 mm;
the density of the thermoplastic composite material is 1.15-1.42 g/cm3。
4. The high-speed rail interior side wall panel according to claim 3, wherein the side wall panel, the window frame and the shade groove are respectively made of thermoplastic composite plates with the same or different thicknesses;
the side wall plate, the window frame and the sunshade screen groove are respectively made of thermoplastic composite plates with the same or different densities.
5. The high-speed rail interior side wall panel according to claim 1, wherein the side wall panel, the window frame and the shade groove are each formed by independent molds;
the side wall plate, the window frame and the sunshade screen groove are combined in a welding mode;
the welding means includes ultrasonic welding.
6. The preparation method of the high-speed rail interior side wallboard is characterized by comprising the following steps of:
1) pretreating an original thermoplastic composite material plate to obtain a crude product;
2) respectively carrying out independent plastic uptake molding on the crude products obtained in the step to obtain a semi-finished product of the side wall plate, a semi-finished product of the window frame and a semi-finished product of the sunshade screen groove;
3) and respectively cutting and processing the semi-finished side wall plate, the semi-finished window frame and the semi-finished sunshade curtain slot obtained in the above steps, and then welding and assembling by ultrasonic waves to obtain the high-speed rail interior side wall plate main body.
7. The method of manufacturing according to claim 6, wherein the thermoplastic composite starting sheet comprises a thermoplastic composite starting sheet with color and surface texture;
the pre-treatment comprises a drying and/or cutting step;
the crude products comprise crude products of the side wall plate, crude products of the window frame and crude products of the sunshade screen groove;
the side wall board crude product, the window frame crude product and the sunshade screen groove crude product are respectively of the same and/or different densities and/or thicknesses and are matched for use.
8. The preparation method of claim 6, wherein the temperature of the plastic suction molding is 175-205 ℃;
the pressure of the plastic suction molding is 0.05-0.08 MPa;
the cutting process comprises a water cutting process.
9. The preparation method according to claim 8, wherein the pressure of the water cutting process is 250-400 Mpa;
the diameter of the inner hole of the nozzle processed by water cutting is 0.15-0.35 mm;
the jet speed of the water cutting processing is 800-1000 m/s;
the frequency of the ultrasonic welding is 15-20 KHz;
the amplitude of the ultrasonic welding is 20-40 mu m;
the ultrasonic welding time is 0.1-0.5 second;
the pressure of ultrasonic welding is 100-300N.
10. Use of the high-speed railway interior side wall panel according to any one of claims 1 to 5 or the high-speed railway interior side wall panel prepared by the preparation method according to any one of claims 6 to 8 in vehicle or rail transit;
the specific location of the application includes interior siding.
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