CN217455184U - Bamboo fiber reinforced PU sandwich composite board and vehicle - Google Patents
Bamboo fiber reinforced PU sandwich composite board and vehicle Download PDFInfo
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- CN217455184U CN217455184U CN202221349066.8U CN202221349066U CN217455184U CN 217455184 U CN217455184 U CN 217455184U CN 202221349066 U CN202221349066 U CN 202221349066U CN 217455184 U CN217455184 U CN 217455184U
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Abstract
The application relates to a bamboo fiber reinforced PU sandwich composite board and a vehicle, and belongs to the technical field of vehicle ornaments. The bamboo fiber reinforced PU sandwich composite board comprises a skin layer, a first adhesive layer, a first bamboo fiber reinforced layer, a second adhesive layer, a PU interlayer, a third adhesive layer, a second bamboo fiber reinforced layer, a fourth adhesive layer and a non-woven fabric layer which are sequentially stacked. The application also provides a vehicle, including vehicle body and foretell original bamboo fiber reinforcing PU core composite sheet. The raw bamboo fiber reinforced PU sandwich composite board in the embodiment of the application has better strength, can be bent in a cambered surface, is not easy to damp, becomes soft, collapses and deforms, and has high comprehensive performance.
Description
Technical Field
The application relates to the technical field of vehicle ornaments, in particular to a bamboo fiber reinforced PU sandwich composite board and a vehicle.
Background
The vehicle is used as a common vehicle for people, and needs to have better safety and comfort so as to guarantee the driving safety of people and improve the driving experience of people. In the manufacturing process of the vehicle, the excellent interior trimming panel of the automobile ceiling is selected, and the method has important significance on the safety and the comfort of the whole vehicle.
Currently, several types of common automotive ceiling interior panels include a light GMT panel (glass fiber reinforced polypropylene composite panel), a glass fiber reinforced PU rigid foamed composite panel, a fibrilia reinforced polypropylene panel, a fibrilia reinforced PU rigid foamed composite panel, and the like. The fibrilia composite board has high water absorption rate, poor antibacterial property, easy mildew, easy moisture absorption and deformation and mildew generation.
SUMMERY OF THE UTILITY MODEL
The application aims to provide a raw bamboo fiber reinforced PU sandwich composite board which has better rigidity and strength and is not easy to damp and deform.
The application is realized by the following technical scheme:
the application provides a natural bamboo fiber reinforcing PU presss from both sides core composite sheet, including skin layer, first glue film, first natural bamboo fiber enhancement layer, second glue film, PU intermediate layer, third glue film, the natural bamboo fiber enhancement layer of second, fourth glue film and the non-woven fabrics layer that stacks gradually the setting.
The bamboo fiber reinforced layer has good air permeability, is not easy to be damped to mildew and has good strength. The bamboo fiber reinforced PU sandwich composite board has better strength due to the use of the bamboo fiber reinforced layer, can be bent in a cambered surface, is not easy to damp, soften, collapse and deform, meets the requirement of light weight, has good environmental protection performance, and improves the comprehensive performance of the bamboo fiber reinforced PU sandwich composite board.
According to some embodiments of the application, the first bamboo fibril reinforcing layer and the second bamboo fibril reinforcing layer each satisfy: the surface density is 400-500 g/square meter, and the thickness H3 is 0.5-1 mm.
The bamboo fiber reinforced layer with the area density of 400 plus one square meter of 500g and the thickness of 0.5-1mm is heated and is not too loose to influence the strength and the rigidity, so that the strength stability of the bamboo fiber reinforced PU sandwich composite board is ensured, and meanwhile, the bamboo fiber reinforced layer has waterproof performance without additionally arranging a waterproof layer. Because the raw bamboo fiber reinforced layers are arranged on the two sides of the PU interlayer, the raw bamboo fiber reinforced PU sandwich composite board has good waterproof performance without additionally arranging a waterproof layer.
According to some embodiments of the present application, the first glue layer, the second glue layer, the third glue layer and the fourth glue layer are all spunbonded fabrics. So set up, the viscidity of glue film is stronger.
According to some embodiments of the present application, the material of the spunbonded fabric is polyethylene or polyamide. The material is simple, and the processing is convenient.
According to some embodiments of the present application, the material of the spunbonded fabric is polypropylene, and the first glue layer and the fourth glue layer both satisfy: the surface density is 30-50 per square meter. The glue film that so sets up has good stickability, can not increase the weight of panel because closely knit degree is too high again simultaneously, influences the lightweight.
According to some embodiments of the present application, the material of the spunbonded fabric is polypropylene, and the second glue layer and the third glue layer both satisfy: is 70-90 g/square meter. The glue layer viscosity that so sets up is stronger, does benefit to and pastes as an organic whole with the tight face of bamboo primary fiber enhancement layer and PU intermediate layer.
According to some embodiments of the present application, the PU interlayer has a bulk density greater than or equal to 0.03-0.05g/m 3 . The volume density of the PU interlayer is controlled, so that the PU interlayer has higher rigidity strength, and local collapse in the use process of the bamboo fiber reinforced PU sandwich composite plate is avoided.
According to some embodiments of the present application, the first bamboo fiber reinforcement layer and the second bamboo fiber reinforcement layer are both made of bamboo fiber composite boards.
The bamboo fiber board is used for replacing the existing short fiber spreading or short felt, so that the compactness of the bamboo fiber board under the same gram weight is increased, and the expansion loosening and the strength reduction of the bamboo fiber reinforced layer after heating are avoided.
According to some embodiments of the present application, the nonwoven layer has an areal density of from 45 to 50 grams per square meter. The non-woven fabric layer not only provides an outer surface which is more attractive than the bamboo fiber reinforced layer for the back surface of the product, but also can prevent the PP resin in the bamboo fiber board from permeating and adhering to the surface of a heating platform or a mold.
The present application also provides a vehicle comprising the bamboo fiber reinforced PU sandwich composite panel of some embodiments of the present application as an interior trim of the vehicle. The original bamboo fiber reinforced PU sandwich composite board as an interior of a vehicle has high strength, is not easy to damp and collapse, is firmly assembled between the interior decorative board of the ceiling and the vehicle body, and has good interior decoration environment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural view of a bamboo fiber reinforced PU sandwich composite panel provided according to some embodiments of the present application;
fig. 2 is a partial view of a bamboo fiber reinforced PU sandwich composite panel enhanced according to some embodiments of the present application.
Icon: 100-a skin layer; 201-a first glue layer; 202-a second glue layer; 203-third glue layer; 204-a fourth glue layer; 301-a first bamboo fiber reinforcement layer; 302-a second bamboo fibril reinforcement layer; a 400-PU interlayer; 500-non-woven fabric layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1 and 2, fig. 1 is a schematic structural view of a bamboo fiber reinforced PU sandwich composite panel according to some embodiments of the present application; fig. 2 is a partial view of a bamboo fiber reinforced PU sandwich composite panel, enhanced according to some embodiments of the present application, for showing the arrangement structure of the various layers of the bamboo fiber reinforced PU sandwich composite panel. The bamboo fiber reinforced PU sandwich composite board is used for decorating vehicles provided by some embodiments of the application, and comprises a skin layer 100, a first adhesive layer 201, a first bamboo fiber reinforced layer 301, a second adhesive layer 202, a PU interlayer 400, a third adhesive layer 203, a second bamboo fiber reinforced layer 302, a fourth adhesive layer 204 and a non-woven fabric layer 500 which are sequentially arranged in a stacked mode.
The surface layer 100 is an appearance function layer of the bamboo fiber reinforced PU sandwich composite board and is exposed in a vehicle interior space, and the material of the surface layer 100 can be real leather, artificial leather or flannelette and the like.
The PU interlayer 400 is a polyurethane interlayer, and the PU interlayer 400 is an internal main body material of the bamboo fiber reinforced PU sandwich composite board.
Illustratively, in fig. 2, a first glue layer 201 bonds the skin layer 100 to a first bamboo fiber reinforcement layer 301, a second glue layer 202 bonds the first bamboo fiber reinforcement layer 301 to the PU interlayer 400, a third glue layer 203 bonds the PU glue layer to a second bamboo fiber reinforcement layer 302, and a fourth glue layer 204 bonds the second bamboo fiber reinforcement layer 302 to the nonwoven layer 500. Understandably, the skin layer 100, the first bamboo fiber reinforced layer 301, the PU interlayer 400, the second bamboo fiber reinforced layer 302 and the non-woven fabric layer 500 are sequentially adhered by glue layers to form the bamboo fiber reinforced PU sandwich composite board.
The first bamboo fiber reinforced layer 301 and the second bamboo fiber reinforced layer 302 have good air permeability, are not easy to damp and mildew, and have good strength. Therefore, the bamboo fiber reinforced PU sandwich composite board has better strength, can be bent to fit the radian of a vehicle body in a cambered surface manner, is not easy to damp, soften, collapse and deform, is light in weight, has good environmental protection performance, and further improves the comprehensive performance of the bamboo fiber reinforced PU sandwich composite board.
According to some embodiments of the present application, the first bamboo fibril reinforcing layer 301 and the second bamboo fibril reinforcing layer 302 both satisfy: the surface density is 400-500 g/square meter, and the thickness is 0.5-1 mm.
Understandably, the first bamboo fiber reinforcement layer 301 and the second bamboo fiber reinforcement layer 302 may have the same density and thickness, and are attached to both sides of the PU interlayer 400, which can uniformly reinforce the strength of both sides of the PU interlayer 400.
The first bamboo fiber reinforcing layer 301 and the second bamboo fiber reinforcing layer 302 have high compactness, have air permeability and are not easy to enter water molecules, and the glue layer is compounded on the surface of the bamboo fiber reinforcing layer, so that the water molecules can be further prevented from permeating into the bamboo fiber reinforcing layer from the surface of the bamboo fiber reinforcing layer, and the waterproof performance is improved. That is to say, the first glue layer 201, the second glue layer 202, the third glue layer 203 and the fourth glue layer 204 both play a role in further protecting the surface of the bamboo fiber board from water and in bonding between the material layers, and the first bamboo fiber reinforcing layer 301 and the second bamboo fiber reinforcing layer 302 have a waterproof performance without additionally arranging a waterproof layer. Because the first bamboo fiber reinforced layer 301 and the second bamboo fiber reinforced layer 302 are disposed on two sides of the PU interlayer 400, the bamboo fiber reinforced PU sandwich composite board has good waterproof performance without additionally arranging a waterproof layer.
In the manufacturing process of the bamboo fiber reinforced PU sandwich composite board, the first bamboo fiber reinforced layer 301 and the second bamboo fiber reinforced layer 302 with the surface density of 400 plus one 500 g/square meter are heated and are not too loose to ensure sufficient strength and rigidity, so that the strength stability of the bamboo fiber reinforced PU sandwich composite board is ensured.
According to some embodiments of the present application, first bondline 201, second bondline 202, third bondline 203, and fourth bondline 204 are all spunbonded fabrics.
Alternatively, the spunbond fabric can be of polyethylene and have an areal density of from 40 to 50 grams per square meter.
Optionally, the spunbonded fabric is made of polyamide and has an area density of 60-70 grams per square meter.
Optionally, the spun-bonded fabric is made of polypropylene, the first adhesive layer 201 and the fourth adhesive layer 204 both have an areal density of 30-50 g/square meter, and the first adhesive layer 201 and the fourth adhesive layer 204 have the same areal density. The first adhesive layer 201 and the fourth adhesive layer 204 arranged in this way have good adhesion, and meanwhile, the weight of the bamboo fiber PU sandwich composite board cannot be increased due to too high compactness, so that the light weight is not influenced.
Optionally, the material of the spunbonded fabric is polypropylene, and the second glue layer 202 and the third glue layer 203 both satisfy the following conditions: the density is 70-90 g/square meter. Understandably, the second adhesive layer 202 and the third adhesive layer 203 have the same surface density, and the adhesive layer thus arranged has stronger viscosity, which is beneficial to enhancing the first bamboo fiber reinforcing layer 301 and the second bamboo fiber reinforcing layer to be tightly adhered to two sides of the PU interlayer 400.
According to some embodiments of the present application, the PU interlayer 400 may be glass fiber reinforced polyurethane foam, which is light in weight and can reduce the overall weight of the bamboo fiber reinforced PU sandwich composite panel. As an exemplary form, the PU interlayer 400 has a bulk density of greater than or equal to 0.03-0.05g/m 3 The volume density of the PU interlayer 400 is controlled so that the PU interlayer 400 has higher rigidity strength, so that the PU interlayer can resist the extrusion of the first bamboo fiber reinforced layer 301 and the second bamboo fiber reinforced layer 302 in the loosening and expansion process to cause the bamboo fiber reinforced PU sandwich composite board to be usedPartially collapsed during the process.
According to some embodiments of the present application, the first bamboo fiber reinforcement layer 301 and the second bamboo fiber reinforcement layer 302 are both made of bamboo fiber composite boards.
The bamboo fiber composite board is a composite material and comprises a matrix and a reinforced composite material, wherein the matrix is PP resin, and the bamboo fiber is the reinforced material. Optionally, the bamboo fiber board is a composite board made of 55% of bamboo fiber and 45% of polypropylene fiber.
The bamboo fiber board is used for replacing the existing short fiber spreading or short felt, so that the compactness of the bamboo fiber board under the same gram weight is increased, and the phenomena that the bamboo fiber reinforced PU sandwich composite board expands and loosens after being heated in the production and manufacturing process and the strength is reduced are avoided.
According to some embodiments of the present application, the nonwoven layer 500 has an areal density of from 45 to 50 grams per square meter. The non-woven fabric layer 500 not only provides an outer surface more beautiful than the bamboo fiber reinforced layer for the back surface of the bamboo fiber PU sandwich composite board, but also can prevent the PP resin in the bamboo fiber board from permeating and adhering to the surface of a heating platform or a mold.
The present application also provides a vehicle using the bamboo fiber reinforced PU sandwich composite panel provided according to some embodiments of the present application as an interior trim panel of the vehicle.
The bamboo fiber reinforced PU sandwich composite board is used as an interior trim panel of a vehicle, and can be used for a ceiling of the vehicle, a coat and hat rack of the vehicle, a back cover plate of the vehicle and the like.
As can be easily understood, the vehicle using the bamboo fiber reinforced PU sandwich composite board in some embodiments of the present application as the interior trim of the vehicle has high strength, good interior trim environment, and firm assembly between the ceiling interior trim board and the vehicle body.
The following illustrates a manufacturing process of the bamboo fiber reinforced PU sandwich composite board:
the manufacturing and processing technology of the bamboo fiber reinforced PU sandwich composite board comprises the following steps:
(1) the first glue layer film, the first bamboo fiber plate, the second glue layer film, the PU interlayer raw material, the third glue layer film, the second bamboo fiber plate, the fourth glue layer film and the non-woven fabric are sequentially laminated together to form a first base material;
the bamboo fiber board is different from the existing form of scattering or forming a fibrilia layer by a chopped strand mat, has good compactness after processing, does not become fluffy after heating, can ensure the strength of the bamboo fiber board, and further ensures the strength of the composite board;
the PU interlayer has high compactness after being processed, and cannot be loosened or collapsed in the using process, so that the strength of the composite plate is ensured;
(2) transferring the first substrate to a plate heating platform by manual or automatic transfer equipment;
in order to ensure the heating uniformity and heating efficiency of the plate, the contact surface of the upper platform is not easy to be too large away from the upper surface of the first substrate, so that the first substrate is placed between the first heating surface and the second heating surface which are oppositely arranged, the margin is left by 5cm, and the second heating surface can move towards the direction close to the first heating surface or away from the first heating surface;
wherein the clearance value N between the first heating surface and the second heating surface is about 1mm larger than the thickness H1 of the first base material;
(3) heating at a first preset temperature T1 for a first preset time S1 to enable the first base material to fill a gap between the first heating surface and the second heating surface to form a second base material, wherein T1 is 220 +/-5 ℃, and S1 is 150 +/-5S;
(4) a suspended fixed frame is arranged between the upper die and the lower die, and the skin material is arranged in the fixed frame in a stretching way;
(5) placing a second base material on the surface material, closing the mold, attaching the surface material to the lower surface of the second base material, keeping the mold cavity at the thickness H2 and the pressure maintaining temperature T2 for a second preset time S2 to form a third base material, wherein T2 is 25-35 ℃, the mold is provided with a closed cooling water loop, and S2 is about 60 +/-5 seconds to cool and shape the third base material;
(6) and opening the mold, taking out the third base material, cutting and trimming to form the bamboo fiber reinforced PU sandwich composite board.
By the manufacturing method, the ratio of the thickness of the PU interlayer of the manufactured bamboo fiber composite board to the thickness of the PU interlayer of the raw material is 70 +/-5%, and the compression ratio of the PU interlayer is effectively controlled, so that the PU interlayer is not loosened excessively to increase the thickness of the product, and is not loosened to reduce the strength of the product.
It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The bamboo fiber reinforced PU sandwich composite board is characterized by comprising a skin layer, a first adhesive layer, a first bamboo fiber reinforced layer, a second adhesive layer, a PU interlayer, a third adhesive layer, a second bamboo fiber reinforced layer, a fourth adhesive layer and a non-woven fabric layer which are sequentially stacked.
2. The bamboo fiber reinforced PU sandwich composite panel according to claim 1, wherein the first bamboo fiber reinforcing layer and the second bamboo fiber reinforcing layer both satisfy: the surface density is 400-500 g/square meter, and the thickness is 0.5-1 mm.
3. The bamboo fiber reinforced PU sandwich composite panel according to claim 1, wherein the first glue layer, the second glue layer, the third glue layer and the fourth glue layer are all spunbonded fabrics.
4. The bamboo fiber reinforced PU sandwich composite board according to claim 3, wherein the spun-bonded cloth is made of polypropylene, polyethylene or polyamide.
5. The bamboo fiber reinforced PU sandwich composite board according to claim 3, wherein the spun-bonded fabric is made of polypropylene, and the first adhesive layer and the fourth adhesive layer both satisfy the following conditions: the surface density is 30-50 g/square meter.
6. The bamboo fiber reinforced PU sandwich composite board according to claim 5, wherein the spun-bonded fabric is made of polypropylene, and the second adhesive layer and the third adhesive layer both satisfy the following conditions: the surface density is 70-90 g/square meter.
7. The bamboo fiber reinforced PU sandwich composite board according to claim 1, wherein the volume density of the PU interlayer is greater than or equal to 0.03-0.05g/m 3 。
8. The bamboo fiber reinforced PU sandwich composite panel according to claim 1, wherein the first bamboo fiber reinforced layer and the second bamboo fiber reinforced layer are both made of bamboo fiber composite panels.
9. The bamboo fiber reinforced PU sandwich composite board according to claim 1, wherein the area density of the non-woven fabric layer is 45-50 g/square meter.
10. A vehicle comprising the bamboo fiber reinforced PU sandwich composite panel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221349066.8U CN217455184U (en) | 2022-05-31 | 2022-05-31 | Bamboo fiber reinforced PU sandwich composite board and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221349066.8U CN217455184U (en) | 2022-05-31 | 2022-05-31 | Bamboo fiber reinforced PU sandwich composite board and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN217455184U true CN217455184U (en) | 2022-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221349066.8U Active CN217455184U (en) | 2022-05-31 | 2022-05-31 | Bamboo fiber reinforced PU sandwich composite board and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217455184U (en) |
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- 2022-05-31 CN CN202221349066.8U patent/CN217455184U/en active Active
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