CN217944528U

CN217944528U - Graphitized carbon fiber composite hard felt

Info

Publication number: CN217944528U
Application number: CN202221891925.6U
Authority: CN
Inventors: 杨艳文; 刘二良
Original assignee: QINGDAO GAOTAI NEW MATERIALS CO Ltd
Current assignee: QINGDAO GAOTAI NEW MATERIALS CO Ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-12-02
Anticipated expiration: 2032-07-21

Abstract

The utility model belongs to the technical field of compound hard felt technique and specifically relates to a compound hard felt of graphitization carbon fiber, including connecting the soft layer, both sides all are fixed with the buffering layering about connecting the soft layer, and buffering layering one side is fixed with supports the hard board layer, supports the hard board layer outside and is fixed with the carriage, and both sides all are equipped with the fixed slot about supporting the hard board layer, and the fixed slot inboard is fixed with the holding ring, and is fixed continuous between carriage and the holding ring. The supporting hard board layers are arranged to be parallel, the stability is improved, when only one core supporting layer is avoided, the situation that the supporting hard board layer cannot be used continuously after being damaged is avoided, the other side of the supporting hard board layer can be used temporarily after the other layer is damaged, the soft layer and the buffer layer are connected between the two supporting hard board layers, the supporting hard board layers are prevented from colliding with each other when being impacted externally, the whole frame is damaged, and the buffer function of the supporting hard board layers can be achieved.

Description

Graphitized carbon fiber composite hard felt

Technical Field

The utility model relates to a compound hard felt technical field especially relates to a compound hard felt of graphitization carbon fiber.

Background

In reality, the medium carbon fiber composite hard felt is mainly used for vacuum furnace heat insulation, inert gas furnace heat insulation, polycrystalline silicon/monocrystalline silicon furnace heat insulation and the like, and is mainly characterized by low heat conductivity coefficient, high purity, high thermal stability, erosion resistance and the like.

Carbon fiber (CF for short) is a new fiber material of high-strength, high-modulus fiber with carbon content above 95%; the carbon fiber is lighter than metal aluminum in mass, but higher in strength than steel, has the characteristics of high hardness, high strength, light weight, high chemical resistance and high temperature resistance, has the inherent intrinsic characteristics of a carbon material, has the soft processability of textile fiber, is a new generation of reinforced fiber, and can be prepared by carbonizing polyacrylonitrile fiber, asphalt fiber, viscose or phenolic fiber; the carbon fibers which are more commonly used are mainly polyacrylonitrile carbon fibers and pitch carbon fibers; the production of carbon fiber includes 4 processes of fiber spinning, thermal stabilization (pre-oxidation), carbonization, graphitization, etc.; the chemical changes that accompany it include, dehydrogenation, cyclization, pre-oxidation, and deoxygenation.

The graphitization of the carbon fiber can lead the structure of the carbon fiber to approach to an ideal graphite structure, and the tensile modulus is greatly improved, so the graphitized carbon fiber is widely applied to the advanced technical field of aerospace and the like, and is heated at ultrahigh temperature or radiated by high-energy substances, so that a disordered graphite sheet layer structure in the carbon fiber forms a regular three-dimensional graphite crystal structure, which is a necessary process for preparing high-modulus or high-strength high-modulus carbon fiber, wherein the tensile strength of the M70J type PAN-based graphite fiber is 3.4GPa, and the tensile modulus reaches 690GPa.

As the requirements on the performance of high-temperature furnaces and vacuum furnaces are continuously increased along with the fields of photovoltaics, solar energy, semiconductor industry, scientific research and the like, the requirements on heat insulation materials are also continuously increased, and meanwhile, the requirements on the performance of the heat insulation materials are also continuously improved.

The existing carbon fiber hard felt is used in a high-temperature use environment containing corrosive impurities for a long time, is easy to age and thin, has low mechanical strength, is easy to generate the phenomena of 'slag falling' and 'pulverization' of the hard felt, has low safety, and has the problems of poor heat insulation effect, low strength, easy deformation, short service life, frequent replacement and the like in the use process, thereby hardly meeting the new requirements of the industry. Therefore, a graphitized carbon fiber composite hard felt is proposed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the existing service environment who makes the hard felt of current carbon fiber be used for high temperature, contain corrosive impurities among the prior art, become easy ageing attenuation, mechanical strength reduces, the phenomenon of hard felt "falling sediment" "pulverization" appears easily, its security reduces, there is the shortcoming that thermal-insulated effect is poor, intensity is low, yielding, life is short, change frequent scheduling problem hardly satisfies the new demand of trade in the use, and the compound hard felt of a graphitization carbon fiber who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a graphitized carbon fiber composite hard felt, is including connecting the soft layer, both sides all are fixed with the buffering layering about connecting the soft layer, buffering layering one side is fixed with the support hardboard layer, the support hardboard layer outside is fixed with the carriage, both sides all are equipped with the fixed slot about the support hardboard layer, the fixed slot inboard is fixed with the holding ring, it links to each other to fix between carriage and the holding ring, the carriage is equipped with a plurality of U type locator, U type locator one side is fixed with the connection rope, connect the rope and be connected between soft layer, the buffering layering and fixed linking to each other, both sides all are fixed with the buffer block about the U type locator, support hardboard layer one side is fixed with the buffer layer, it is equipped with carbon cloth A, carbon cloth B to connect the soft layer outside, carbon cloth A and buffer layer, support hardboard layer, buffering layering, connect and fix linking to each other between the soft layer, carbon cloth B and carbon cloth A, buffer layer, support hardboard layer, buffering layering, connect and fix linking to each other between the soft layer, both sides are fixed with the graphite ply about carbon cloth B.

Preferably, the connection soft layer, the buffer layering layer, the support hard board layer, the support frame, the positioning ring, the U-shaped positioner, the connection rope, the buffer block, the buffer layer, the carbon cloth A and the carbon cloth B are all made of polyacrylonitrile PAN (polyacrylonitrile) based fiber materials.

Preferably, the buffer layer and the supporting hard board layer are fixed by an adhesive.

Preferably, the adhesive is an epoxy adhesive.

Preferably, the graphite paper layer is flexible graphite paper.

Preferably, the buffer layer, the carbon cloth A, the carbon cloth B and the graphite paper layer can be of one-layer or multi-layer structure.

The utility model provides a graphitized carbon fiber composite hard felt, beneficial effect lies in:

1. through setting up support hardboard layer, connection soft layer, buffering layering, buffer layer, become two with the core, improved holistic stability and intensity, and all have buffer structure in two core both sides, improved holistic crushing resistance.

2. Through setting up carriage, holding ring, carbon cloth A, carbon cloth B, graphite paper layer, played the fixed action to the whole shape, increased holistic stability and intensity and the carriage has improved whole anti striking ability, and graphite paper layer can improve holistic heat-sinking capability.

3. Through setting up U type locator, connecting rope, buffer block, play a spacing fixed effect to the whole, improved holistic stability.

Drawings

Fig. 1 is a schematic front three-dimensional structure diagram of a graphitized carbon fiber composite hard felt provided by the utility model;

fig. 2 is a right side cutaway three-dimensional structural diagram of a graphitized carbon fiber composite hard felt provided by the utility model;

fig. 3 is a schematic diagram of a partially enlarged three-dimensional structure of the area a in fig. 2 according to the present invention.

In the figure: the structure comprises a connecting soft layer 1, a buffer layer 2, a supporting hard board layer 3, a supporting frame 4, a positioning ring 5, a U-shaped positioner 6, a connecting rope 7, a buffer block 8, a buffer layer 9, a carbon cloth A10, a carbon cloth B11 and a graphite paper layer 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a graphitized carbon fiber composite hard felt, including connecting soft layer 1, both sides all are fixed with buffering layering 2 about connecting soft layer 1, buffering layering 2 one side is fixed with supports hardboard layer 3, fix through pasting the agent between buffering layering 2 and the support hardboard layer 3, it is epoxy adhesive to paste the agent, set up supporting hardboard layer 3 into two-layer parallel, the stability has improved wholly, and when having avoided only one core supporting layer, it can't continue the condition of using after falling, two-layer can be changed another side and used temporarily earlier after falling one deck is bad, and connect soft layer 1 and buffering layering 2 between two support hardboard layer 3, avoid supporting hardboard layer 3 and colliding each other when receiving external impact, lead to whole frame impaired, can also play the effect of buffering to supporting hardboard layer 3.

Support the hardboard layer 3 outside and be fixed with carriage 4, both sides all are equipped with the fixed slot about supporting hardboard layer 3, the fixed slot inboard is fixed with holding ring 5, it is fixed continuous between carriage 4 and the holding ring 5, carriage 4 is equipped with a plurality of U type locator 6,U type locator 6 one side and is fixed with connects rope 7, connect rope 7 and connection soft layer 1, it is fixed continuous between buffer layer 2, both sides all are fixed with buffer block 8 about U type locator 6, because support hardboard layer 3 side is the narrow interface, it is weaker than its upper and lower two-sided bearing capacity, it is more easily impaired, utilize carriage 4 to support hardboard layer 3 side parcel, avoid external force direct action on supporting hardboard layer 3 side, reduce the probability that supports hardboard layer 3 and damage, the intensity of supporting hardboard layer 3 side resistance to compression has been improved, U type locator 6 can play a spacing location's effect simultaneously, whole frame's stability has been increased, make its non-deformable, the ability of holistic compression has been improved.

Support 3 one sides of hardboard layer and be fixed with buffer layer 9, buffer layer 9 can play an attenuated effect to external force, reduce the damage of external force to supporting hardboard layer 3, service life is prolonged, can also improve holistic thermal-insulated effect, it is equipped with carbon cloth A10 to connect the soft layer 1 outside, carbon cloth B11, buffer layer 9, carbon cloth A10, carbon cloth B11, graphite paper layer 12 all can be one deck or multilayer structure, can more operation requirement when processing, the preprocessing together with the same individual layer earlier, all can satisfy customer's demand, production efficiency has still been improved, carbon cloth A10 and buffer layer 9, support hardboard layer 3, buffering layering 2, connect and fixedly link to each other between the soft layer 1, carbon cloth B11 and carbon cloth A10, buffer layer 9, support hardboard layer 3, buffering layering 2, connect and fixedly link to each other between the soft layer 1, carbon cloth A10 and carbon cloth B11 criss-cross parcel live buffer layer 9, play a fixed action to whole from two directions, whole stable system has been improved, carbon cloth B11 upper and lower sides are fixed with graphite paper layer 12, graphite paper layer 12 is graphite paper, two even heat conduction regions of even heat conduction of even heat removal of the heat conduction paper can be followed "the even heat conduction region" the heat conduction region is eliminated "the flexible paper more

The connection soft layer 1, the buffer layer 2, the support hard board layer 3, the support frame 4, the positioning ring 5, the U-shaped positioner 6, the connection rope 7, the buffer block 8, the buffer layer 9, the carbon cloth A10 and the carbon cloth B11 are all made of polyacrylonitrile PAN-based fiber materials, the carbon fiber adhesive, namely impregnating resin, is a double-component, solvent-free and high-strength epoxy adhesive and is a main bonding material for bonding carbon fibers, so that the carbon fiber cloth and concrete can be fully bonded, and the connection soft layer has the characteristics of low viscosity, good thixotropy, high strength, good permeability to the carbon fibers, normal-temperature curing and the like.

PAN-based carbon fibers can be divided into small tows and large tows according to the tow specification, the small tow carbon fibers with the tow specification of less than 24k are small tow carbon fibers, the small tow carbon fibers are excellent in mechanical property, the tensile strength is 3.5-7.0GPa, the tensile modulus is 230-650GPa, and the PAN-based carbon fibers are mainly applied to the fields of aerospace, national defense and military industry, high-end sports and leisure articles and the like, and are also called aerospace-grade carbon fibers; the large-tow carbon fiber has the tensile strength of 3.5-5.0GPa and the tensile modulus of 230-290GPa, and is generally applied to the fields of textile, medicine and health, electromechanics, civil engineering and construction, transportation, energy and the like, so the large-tow carbon fiber is also called industrial carbon fiber.

It should be noted that:

carbon cloth A10, carbon cloth B11, graphite paper layer 12 that this application provided are prior art, and its specific function and usage are no longer repeated herein, wherein:

the carbon cloth A10 and the carbon cloth B11 are short for carbon fiber cloth, namely carbon fiber fabrics; is made up by using preoxidized polyacrylonitrile fibre fabric through the processes of carbonization and carbon fibre weaving. Also known as carbon fiber cloth, carbon fiber fabric, carbon fiber tape, carbon fiber sheet prepreg and the like; the reinforced member has the characteristics of high strength, small density and thin thickness, and the self weight and the section size of the reinforced member are not basically increased; the method is suitable for reinforcement and repair, seismic reinforcement and node structural reinforcement of various structural types and structural shapes; the construction is convenient, large-scale machines and equipment are not needed, wet operation is not needed, fire is not needed, on-site fixed facilities are not needed, the occupied site for construction is small, and the construction efficiency is high. High durability, and is very suitable for high acid, alkali, salt and atmospheric corrosion environment because the steel cannot rust.

The graphite paper layer 12 is flexible graphite paper, and the graphite paper is formed by chemically treating high-carbon phosphorus flake graphite and performing high-temperature expansion rolling. The graphite sealing element is a basic material for manufacturing various graphite sealing elements, has high heat dissipation efficiency, small occupied space and light weight, conducts heat uniformly along two directions and eliminates a 'hot spot' area.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a graphitized carbon fiber composite hard felt, is including connecting soft layer (1), a serial communication port, both sides all are fixed with buffering layering (2) about connecting soft layer (1), buffering layering (2) one side is fixed with supports hardboard layer (3), support hardboard layer (3) outside is fixed with carriage (4), both sides all are equipped with the fixed slot about supporting hardboard layer (3), the fixed slot inboard is fixed with holding ring (5), it links to each other to fix between carriage (4) and holding ring (5), carriage (4) are equipped with a plurality of U type locator (6), U type locator (6) one side is fixed with connects rope (7), connect rope (7) and connect and fix between soft layer (1), buffering layering (2) and link to each other, both sides all are fixed with buffer block (8) about U type locator (6), support hardboard layer (3) one side is fixed with buffer layer (9), it is equipped with carbon cloth A (10), carbon cloth B (11) to connect soft layer (1) outside, carbon cloth A (10), support between buffer layer (9), carbon cloth (3) and the hard layer (11), support soft layer (1) and support layer (10), carbon cloth (10), support layer (10) and support hardboard (11) and soft layer (1) and soft layer (10), carbon cloth, the buffering layering (2) and the connecting soft layer (1) are fixedly connected, and graphite paper layers (12) are fixed on the upper side and the lower side of the carbon cloth B (11).

2. The graphitized carbon fiber composite hard felt according to claim 1, wherein the connecting soft layer (1), the buffer layer (2), the supporting hard board layer (3), the supporting frame (4), the positioning ring (5), the U-shaped positioner (6), the connecting rope (7), the buffer block (8), the buffer layer (9), the carbon cloth A (10) and the carbon cloth B (11) are all made of PAN-based fiber materials.

3. The graphitized carbon fiber composite hard felt according to claim 1, characterized in that the buffer layer (2) and the supporting hard board layer (3) are fixed by an adhesive.

4. The graphitized carbon fiber composite hard felt according to claim 3, wherein the adhesive is an epoxy adhesive.

5. The graphitized carbon fiber composite hard felt according to claim 1, wherein the graphite paper layer (12) is a flexible graphite paper.

6. The graphitized carbon fiber composite hard felt according to claim 1, wherein the buffer layer (9), the carbon cloth A (10), the carbon cloth B (11) and the graphite paper layer (12) are all in one or more layers.