CN211000274U

CN211000274U - Lightweight composite board for railway vehicle

Info

Publication number: CN211000274U
Application number: CN201921649434.9U
Authority: CN
Inventors: 戈建鸣; 蔡银平; 黄振振; 付姝珺
Original assignee: KTK Group Co Ltd
Current assignee: KTK Group Co Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-07-14
Anticipated expiration: 2029-09-29

Abstract

The utility model relates to the technical field of rail transit, in particular to a light-weight composite plate for a rail vehicle, a core material layer is arranged between an upper prepreg skin layer and a lower prepreg skin layer, the upper prepreg skin layer and the lower prepreg skin layer are bonded with the core material layer through prepreg resin bonding layers, autoclave molding, hot press molding or vacuum bag molding is arranged between the upper prepreg skin layer and the lower prepreg skin layer, the core material layer is a foam core or an aramid honeycomb core or an aluminum honeycomb core, the light-weight composite plate has the advantages of strong designability, accurate and controllable resin content, controllable product thickness and fiber volume fraction, stable product quality, high product quality consistency and reliability and the like, in addition, the light-weight composite plate has the advantages of simple molding process, high production efficiency, far higher performance than that of the traditional glass fiber reinforced plastics and metal materials and the like, light weight, high strength and environmental protection, and can realize light weight on the premise of meeting the requirements, has great application potential and market value.

Description

Lightweight composite board for railway vehicle

Technical Field

The utility model belongs to the technical field of the rail transit technique and specifically relates to a rail vehicle lightweight composite board.

Background

At present, the traditional built-in products applied to the railway vehicles are of aluminum alloy or glass fiber reinforced plastic structures, wherein the aluminum alloy parts comprise the procedures of section blanking, section machining, cleaning, welding, polishing, post-treatment and the like in the production process, the total procedures are multiple, and the quality control cost is high. And because the rigidity is relatively poor in the built-in spare of aluminum alloy structure, need add the frame at the product back usually and carry out the reinforcement, the structural style is aluminum alloy + back aluminum alloy section bar frame reinforcement, and the density of aluminium is great, about 2.7g/cm3, and the back needs to add the frame reinforcement, and the built-in product of preparation is heavier, and weight is greatly increased more, does not accord with the lightweight, and the heat-proof quality is poor, and sound insulation performance is poor.

The back of the glass fiber reinforced plastic structure needs to be reinforced by a larger amount of reinforcing frames, the structural form is glass fiber reinforced plastic and back aluminum alloy frame reinforcing, the fiber direction is difficult to control, the designability is poor, the resin content is difficult to control, the product thickness and the fiber volume fraction are difficult to control, the product consistency and the stability are poor, the rigidity of the product arranged in the glass fiber reinforced plastic structure is poor, the raw materials contain various volatile matters, such as volatile organic compounds containing formaldehyde, styrene and the like, the environmental protection performance is poor, the weight of the glass fiber reinforced plastic product is heavier, the size stability is poor, and the traditional materials do not accord with the requirements.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the lightweight composite board for the railway vehicle is lightweight, the resin content and the product thickness are accurately controlled, the reliability and the stability of the product are improved, and the quality consistency of the product is ensured.

The utility model provides a technical scheme that its technical problem adopted is: railway vehicle lightweight composite board, including last preimpregnation material skin layer, core layer and lower preimpregnation material skin layer, last preimpregnation material skin layer and be equipped with the core layer down between the preimpregnation material skin layer, bond through preimpregnation material resin tie coat between upper and lower preimpregnation material skin layer and the core layer, be autoclave shaping or hot briquetting or vacuum bag pressure molding between upper and lower preimpregnation material skin layer and the core layer, the core layer is foam core or aramid fiber honeycomb core or aluminium honeycomb core.

Furthermore, an isolation cloth, an isolation film and an air-permeable felt are sequentially arranged on the upper surface of the upper prepreg skin layer.

Furthermore, the upper and lower prepreg skin layers are composed of one or more of glass fiber, carbon fiber, aramid fiber and natural fiber.

Furthermore, the upper and lower prepreg skin layers are phenolic resin or epoxy resin or bismaleimide resin, and the resin content in the prepreg resin layer is 35-55%.

The utility model has the advantages that: the utility model discloses lightweight, designability are strong, resin content is accurate controllable, goods thickness and fibre volume fraction are controllable, goods stable quality, goods quality uniformity and reliability are high, have still that forming process is simple in addition, production efficiency is high, the performance is higher than advantages such as traditional glass steel and metal material far away, the quality is light, intensity is high, the environmental protection, can realize the lightweight under the prerequisite that satisfies the material performance requirement, have very big application potential and market value.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the present invention applied to embodiment 1;

FIG. 3 is a schematic structural view of the present invention applied to embodiment 2;

FIG. 4 is a schematic structural view of the present invention applied to embodiment 3;

FIG. 5 is a schematic structural view of the present invention applied to embodiment 4;

FIG. 6 is a schematic structural view of the present invention applied to example 5;

fig. 7 is a schematic structural view of the present invention applied to embodiment 6.

In the figure: 1. the prepreg comprises an upper prepreg skin layer, 2 a core material layer, 3 a prepreg resin bonding layer and 5 a lower prepreg skin layer.

Detailed Description

The invention will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in figures 1-7, a rail vehicle lightweight composite board, including last prepreg skin layer 1, core layer 2 and lower prepreg skin layer 5, it is equipped with core layer 2 to go up between prepreg skin layer 1 and the lower prepreg skin layer 5, go up, bond through prepreg resin tie coat 3 between lower prepreg skin layer 1, 5 and the core layer 2, go up, be autoclave shaping or thermoforming or vacuum bag pressure molding between lower prepreg skin layer 1, 5 and the core layer 2, core layer 2 is foam core or aramid fiber honeycomb core or aluminium honeycomb core.

And adhesive film layers are arranged between the core material layer 2 and the upper and lower prepreg skin layers 1 and 5.

Any one or two of an isolation cloth, an isolation film and an air-permeable felt are sequentially arranged on the upper surface of the upper prepreg skin layer 1.

And the upper surface of the upper prepreg skin layer 1 is sequentially provided with an isolation cloth, an isolation film and an air-permeable felt.

The upper and lower prepreg skin layers 1 and 5 are made of one or more of glass fiber, carbon fiber, aramid fiber and natural fiber.

The upper and lower prepreg skin layers 1 and 5 are phenolic resin or epoxy resin or bismaleimide resin, and the resin content in the prepreg resin layer 3 is 35-55%.

Example 1: lightweight composite wallboard as shown in FIG. 2

1. And (3) selecting materials of upper and lower prepreg skin layers 1 and 5: the prepreg fiber is glass fiber, the prepreg resin bonding layer 3 is epoxy resin, and the resin content is 45%.

2. Selecting the core material layer 2: a foam core.

3. A forming step: coating a release agent on the surface of the mold, then sequentially laying down a prepreg skin layer 5, an adhesive film, a core material, the adhesive film, an upper prepreg skin layer 1, an isolation cloth, an isolation film and an air felt, then bagging the blank by a vacuum bag, vacuumizing, putting the product into an autoclave, vacuumizing in the autoclave, and simultaneously heating to complete curing. The heating temperature is 60-180 ℃, and the forming time is 2-120 min.

Example 2: the lightweight composite under-window wallboard as shown in fig. 3

1. And (3) selecting materials of upper and lower prepreg skin layers 1 and 5: the prepreg fiber is carbon fiber, the prepreg resin bonding layer 3 is epoxy resin, and the resin content is 40%.

2. Selecting the core material layer 2: a foam core.

3. A forming step: coating a release agent on the surface of the mold, then sequentially laying down a prepreg skin layer 5, an adhesive film core material, an adhesive film, an upper prepreg skin layer 1, an isolation cloth and an air felt, then bagging the blank by a vacuum bag, vacuumizing, putting the product into an autoclave, vacuumizing in the autoclave, and simultaneously heating to complete curing. The heating temperature is 60-180 ℃, and the forming time is 2-120 min.

Example 3: the lightweight composite door pillar cover plate as shown in fig. 4

1. And (3) selecting materials of upper and lower prepreg skin layers 1 and 5: the prepreg fiber is glass fiber, the prepreg resin bonding layer 3 is phenolic resin, and the resin content is 50%.

2. Selecting the core material layer 2: a foam core.

3. A forming step: coating a release agent on the surface of the mould, then sequentially laying a prepreg skin layer 5, an adhesive film, a core material, the adhesive film, an upper prepreg skin layer 1, an isolation film and an air felt, then packaging the blank by a vacuum bag, vacuumizing, putting the product into an oven, and heating to complete curing. The heating temperature is 60-180 ℃, and the forming time is 2-120 min.

Example 4: a lightweight composite partition as shown in FIG. 5

1. And (3) selecting materials of upper and lower prepreg skin layers 1 and 5: the prepreg fibers are glass fibers and aramid fibers, the prepreg resin bonding layer 3 is bismaleimide resin, and the resin content is 55%.

2. Selecting the core material layer 2: aramid fiber honeycomb core.

3. A forming step: and (3) coating a release agent on the surface of the mould, and then sequentially laying down a prepreg skin layer 5, a core material, an upper prepreg skin layer 1, an isolation cloth, an isolation film and an air felt. Then a vacuum bag is arranged to encapsulate the blank, the vacuum is pumped, the blank is moved into an oven, and the curing is completed by heating. The heating temperature is 60-180 ℃, and the forming time is 2-120 min.

Example 5: the light weight composite floor as shown in fig. 6

2. Selecting the core material layer 2: an aluminum honeycomb core.

3. A forming step: and (3) coating a release agent on the surface of the mould, and then sequentially laying down a prepreg skin layer 5, a core material, an upper prepreg skin layer 1, an isolation film and an air felt. Then a vacuum bag is arranged to encapsulate the blank, the vacuum is pumped, the blank is moved into an oven, and the curing is completed by heating. The heating temperature is 60-180 ℃, and the forming time is 2-120 min.

Example 6: the lightweight composite roof panel shown in FIG. 7

2. Selecting the core material layer 2: aramid fiber honeycomb core.

3. A forming step: and (3) coating a release agent on the surface of the mould, and then sequentially laying down the prepreg skin layer 5, the adhesive film, the core material, the adhesive film and the upper prepreg skin layer 1. And starting the hot press, and heating and pressurizing to finish curing. The pressure of the press is 2-7 MPa, the heating temperature is 60-180 ℃, and the forming time is 2-120 min.

While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims

1. The utility model provides a rail vehicle lightweight composite board which characterized in that: including last preimpregnation material skin layer (1), core material layer (2) and lower preimpregnation material skin layer (5), last preimpregnation material skin layer (1) and be equipped with core material layer (2) down between preimpregnation material skin layer (5), bond through preimpregnation material resin tie coat (3) between upper and lower preimpregnation material skin layer (1, 5) and core material layer (2), be autoclave shaping or thermoforming or vacuum bag pressure forming between upper and lower preimpregnation material skin layer (1, 5) and core material layer (2), core material layer (2) are foam core or aramid fiber honeycomb core or aluminium honeycomb core.

2. The railway vehicle lightweight composite panel as claimed in claim 1, wherein: and adhesive film layers are arranged between the core material layer (2) and the upper and lower prepreg skin layers (1 and 5).