Hard felt transformed from waste felt and application of hard felt in vacuum high-temperature equipment

Abstract

The invention discloses a hard felt transformed from a waste felt and application of the hard felt in vacuum high-temperature equipment, and relates to the technical field of transformation and application of waste felts.The method comprises the steps that waste carbon fiber soft felt is recycled to serve as a raw material for manufacturing the carbon fiber hard felt; waste carbon fiber soft felt is cut into size felts, and the size felts are laid and bonded together and then solidified into carbon fiber hard felt; a detachable and replaceable solid felt is arranged in an easy-to-pulverize area of the electrode hard felt and is used for directly replacing a pulverized part after regional pulverization; repeated utilization of the carbon fiber soft felt is achieved, the pulverized part is directly replaced after the solid felt is pulverized, in this way, cyclic utilization of the carbon fiber soft felt and the electrode hard felt is achieved, and the resource utilization rate is greatly increased.

Description

Technical Field

[0001] The invention relates to the technical field of transformation and application of waste felt, in particular to a hard felt transformed from waste felt and the application of the hard felt in vacuum high-temperature equipment. Background Art

[0002] Carbon fiber electrode hard felt is produced from new carbon fiber soft felt. The production of hard felt from new soft felt is not only costly, but also impossible to recycle waste soft felt to produce electrode hard felt used in high-temperature vacuum equipment. At the same time, the electrode hard felts used in existing high-temperature vacuum equipment are all integrally formed, without replaceable solid felts, which are not only prone to local powdering, but also become completely scrapped after local powdering, and the powdered parts cannot be replaced, and cannot be reused after local replacement. Summary of the invention

[0003] The main purpose of the present invention is to provide a hard felt transformed from waste felt and the use of the hard felt in vacuum high-temperature equipment, aiming to solve the technical problems that the existing technology cannot recycle waste soft felt to manufacture electrode hard felt, and the powdered parts of the electrode hard felt in the high-temperature vacuum equipment cannot be replaced and cannot be reused.

[0004] To achieve the above object, the present invention provides a hard felt transformed from waste felt and the use of the hard felt in a vacuum high temperature device, comprising: S1, hard felt is made from waste carbon fiber soft felt; The waste carbon fiber soft felt is recycled as the raw material for manufacturing carbon fiber hard felt; the waste carbon fiber soft felt is cut into size felts, the size felts are stacked and bonded together and then cured into carbon fiber hard felt, so as to make full use of the waste carbon fiber soft felt; Specifically: S101, Cutting of waste felt Cut the waste carbon fiber soft felt into felts with a length*width*thickness of 1200*400*10 (mm); S102, size felt blank curing The size felts are bonded together with resin, and the bonding density is: 0.13-0.15g / cm³; after bonding, they are heated and cured with a hot press, and the heating temperature is: 140℃-160℃, and the heating time is: 110-130 minutes, and the hard felt is cured, and the hard felt is processed into a disc-shaped electrode hard felt; S2. A removable solid felt is set in the area where the electrode hard felt is easy to be powdered, so as to directly replace the powdered part after the area is powdered; S201, setting a replacement hole in the area where the electrode hard felt is prone to pulverization; S202, processing the solid felt, installing the solid felt in a detachable manner in the replacement hole.

[0005] Furthermore, the hard felt needs to be carbonized to form the product; the carbonization temperature is: 1750°C-1850°C; the carbonization time is: 160-174 hours; Impurities are removed during the carbonization process, namely, water, resin and alcohol in the resin are removed, and the moisture content of the hard felt finally obtained is: 0.01%-0.03%.

[0006] Furthermore, the hard felt needs to be subjected to surface roughness treatment and surface coating after carbonization; the coating method adopts brushing; the coating thickness is: 0.3-0.5mm.

[0007] Furthermore, the hard felt surface needs to be deposited after coating, so that the coating dries and adheres to the hard felt surface; the deposition method is to place the coated hard felt in a carbonization furnace and heat it to 900-1000°C, and take it out after heating for 3 days to complete the deposition.

[0008] Furthermore, the pulverization area is the electrode placement area.

[0009] Furthermore, the replacement hole is a frustum hole, a prism hole or a countersunk hole; The fixed felt is adapted to the replacement hole and is in the shape of a truncated cone, a prism or a countersunk head, and the fixed felt is embedded in the replacement hole; The inclination angle α of the truncated cone-shaped or prism-shaped solid felt is 10 to 60 degrees; The inclination angle β of the countersunk head-shaped solid felt is 10 degrees to 90 degrees.

[0010] Furthermore, the solid felt is provided with an electrode mounting hole, and the minimum thickness t of the solid felt is at least 40 mm.

[0011] Furthermore, the brush material of the surface coating is a mixture of sol and fine graphite powder.

[0012] Furthermore, the solid felt and the electrode hard felt are made of the same material.

[0013] The beneficial effects of the present invention are embodied in: In the present invention, used waste soft felt is made into hard felt products and put into use again. Because the high-temperature area of ​​the electrode hard felt in the high-temperature vacuum equipment is easy to pulverize, it is designed as a split solid felt. The detachable solid felt can be directly replaced after pulverization, so as to achieve recycling, save costs and avoid waste of felt. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 An exploded view of the electrode hard felt of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the electrode hard felt of the present invention; Figure 3The front view and bottom view of the embodiment of the solid felt of the present invention (the solid felt is a truncated cone, a quadrangular cone, a countersunk truncated cone, and a countersunk quadrangular cone) are shown.

[0015] Description of reference numerals: 10. Electrode hard felt, 101. Replacement hole; 20. Felt fixing, 201. Electrode placement hole. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0017] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0018] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that A and B meet at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist.

[0019] Embodiment 1

[0020] A hard felt transformed from waste felt and the use of the hard felt in vacuum high temperature equipment, including: S1, hard felt is made from waste carbon fiber soft felt; The waste carbon fiber soft felt is recycled as the raw material for manufacturing carbon fiber hard felt; the waste carbon fiber soft felt is cut into size felts, the size felts are stacked and bonded together and then cured into carbon fiber hard felt, so as to make full use of the waste carbon fiber soft felt; Specifically: S101, Cutting of waste felt Cut the waste carbon fiber soft felt into felts with a length*width*thickness of 1200*400*10 (mm); S102, size felt blank curing The size felts are bonded together with resin, and the bonding density is: 0.13-0.14g / cm³; after bonding, they are heated and cured with a hot press, and the heating temperature is: 140℃-150℃, and the heating time is: 110-120 minutes, and the hard felt is cured, and the hard felt is processed into a disc-shaped electrode hard felt 10; the size of the electrode hard felt can be determined according to the number of electrodes, and it can install at least one felt and adapt to at least one electrode, and the specific size is not limited.

[0021] S2. A removable fixed felt 20 is provided in the easy-to-powder area of ​​the electrode hard felt 10, so as to directly replace the powdered part after the area is powdered; S201, setting a replacement hole 101 in the easy-to-powder area of ​​the electrode hard felt 10; S202, processing the solid felt 20, and installing the solid felt 20 in the replacement hole 101 in a removable manner. The use environment of the electrode hard felt is about 2000°C. If the electrode hard felt is not provided with a removable solid felt, the electrode hard felt around the electrode will be powdered in about two months, and will be scrapped as a whole, and needs to be replaced as a whole; if the removable solid felt is provided, the service life of the solid felt remains unchanged, and after powdering, only the solid felt around the electrode needs to be replaced, and the electrode hard felt can be used for about six months, which greatly increases the service life of the electrode hard felt and saves costs.

[0022] The hard felt also needs to be carbonized to form the product; the carbonization temperature is: 1750°C-1800°C; the carbonization time is: 160-168 hours; The carbonization process removes impurities, that is, removes water, resin and alcohol in the resin, and the moisture content of the hard felt finally obtained is: 0.01%-0.02%. Impurities are automatically removed during the high-temperature carbonization process.

[0023] After carbonization, the hard felt needs to be treated with surface roughness and coated. The coating method is brushing. The coating thickness is 0.3-0.4 mm. The surface roughness Ra is less than 50, which can be selected according to actual needs without other restrictions.

[0024] The hard felt surface needs to be deposited after coating, so that the coating dries and adheres to the hard felt surface; the deposition method is to place the coated hard felt in a carbonization furnace and heat it to 900-950°C, and take it out after heating for 3 days to complete the deposition.

[0025] The pulverized area is the electrode placement area.

[0026] The replacement hole 101 is a countersunk hole; The fixed felt 20 is adapted to the replacement hole 101 and is in a countersunk shape. The fixed felt 20 is embedded in the replacement hole 101; The inclination angle α of the truncated cone-shaped or prism-shaped solid felt is 10 to 60 degrees; The inclination angle β of the countersunk head-shaped solid felt is 10 degrees to 90 degrees.

[0027] The solid felt 20 is provided with an electrode mounting hole 201 , and the minimum thickness t of the solid felt 20 is 40 mm.

[0028] The brush material of the surface coating is a mixture of sol and fine graphite powder.

[0029] The solid felt 20 is made of the same material as the electrode hard felt 10 .

[0030] Embodiment 2

[0031] A hard felt transformed from waste felt and the use of the hard felt in vacuum high temperature equipment, including: S1, hard felt is made from waste carbon fiber soft felt; The waste carbon fiber soft felt is recycled as the raw material for manufacturing carbon fiber hard felt; the waste carbon fiber soft felt is cut into size felts, the size felts are stacked and bonded together and then cured into carbon fiber hard felt, so as to make full use of the waste carbon fiber soft felt; Specifically: S101, Cutting of waste felt Cut the waste carbon fiber soft felt into felts with a length*width*thickness of 1200*400*10 (mm); S102, size felt blank curing The size felts are bonded together with resin, and the bonding density is: 0.14g / cm³; after bonding, they are heated and cured with a hot press, the heating temperature is: 150℃, the heating time is: 120 minutes, and they are cured into hard felt, and the hard felt is processed into a disc-shaped electrode hard felt 10; the size of the electrode hard felt can be determined according to the number of electrodes, and it only needs to be able to install at least one felt and be able to adapt to at least one electrode, and the specific size is not limited.

[0032] S2. A removable fixed felt 20 is provided in the easy-to-powder area of ​​the electrode hard felt 10, so as to directly replace the powdered part after the area is powdered; S201, setting a replacement hole 101 in the easy-to-powder area of ​​the electrode hard felt 10; S202, processing the solid felt 20, and installing the solid felt 20 in the replacement hole 101 in a removable manner. The use environment of the electrode hard felt is about 2000°C. If the electrode hard felt is not provided with a removable solid felt, the electrode hard felt around the electrode will be powdered in about two months, and will be scrapped as a whole, and needs to be replaced as a whole; if the removable solid felt is provided, the service life of the solid felt remains unchanged, and after powdering, only the solid felt around the electrode needs to be replaced, and the electrode hard felt can be used for about six months, which greatly increases the service life of the electrode hard felt and saves costs.

[0033] The hard felt also needs to be carbonized to form the product; the carbonization temperature is: 1800°C; the carbonization time is: 168 hours; The carbonization process removes impurities, that is, removes water, resin and alcohol in the resin, and the moisture content of the hard felt finally obtained is: 0.02%. Impurities are automatically removed during the high-temperature carbonization process.

[0034] After carbonization, the hard felt needs to be treated with surface roughness and coated. The coating method uses a brush. The coating thickness is 0.4 mm. The surface roughness Ra can be less than 50, which can be selected according to actual needs without other restrictions.

[0035] The hard felt surface coating needs to be deposited to make the coating dry and adhere to the hard felt surface; the deposition method is to place the coated hard felt in a carbonization furnace and heat it to 950° C. After heating for 3 days, take it out to complete the deposition.

[0036] The pulverized area is the electrode placement area.

[0037] The replacement hole 101 is a truncated cone hole; The fixed felt 20 is adapted to the replacement hole 101 and is in a truncated cone shape. The fixed felt 20 is embedded in the replacement hole 101; The inclination angle α of the truncated cone-shaped or prism-shaped solid felt is 10 to 60 degrees; The inclination angle β of the countersunk head-shaped solid felt is 10 degrees to 90 degrees.

[0038] The solid felt 20 is provided with an electrode mounting hole 201 , and the minimum thickness t of the solid felt 20 is 40 mm.

[0039] The brush material of the surface coating is a mixture of sol and fine graphite powder.

[0040] The solid felt 20 is made of the same material as the electrode hard felt 10 .

[0041] Embodiment 3

[0042] A hard felt transformed from waste felt and the use of the hard felt in vacuum high temperature equipment, including: S1, hard felt is made from waste carbon fiber soft felt; The waste carbon fiber soft felt is recycled as the raw material for manufacturing carbon fiber hard felt; the waste carbon fiber soft felt is cut into size felts, the size felts are stacked and bonded together and then cured into carbon fiber hard felt, so as to make full use of the waste carbon fiber soft felt; Specifically: S101, Cutting of waste felt Cut the waste carbon fiber soft felt into felts with a length*width*thickness of 1200*400*10 (mm); S102, size felt blank curing The size felts are bonded together with resin, and the bonding density is: 0.14g-0.15g / cm³; after bonding, they are heated and cured with a hot press, the heating temperature is: 150-160℃, the heating time is: 120-130 minutes, and they are cured into hard felt, and the hard felt is processed into a disc-shaped electrode hard felt 10; the size of the electrode hard felt can be determined according to the number of electrodes, and it can install at least one felt and adapt to at least one electrode, and the specific size is not limited.

[0043] S2. A removable fixed felt 20 is provided in the easy-to-powder area of ​​the electrode hard felt 10, so as to directly replace the powdered part after the area is powdered; S201, setting a replacement hole 101 in the easy-to-powder area of ​​the electrode hard felt 10; S202, processing the solid felt 20, and installing the solid felt 20 in the replacement hole 101 in a removable manner. The use environment of the electrode hard felt is about 2000°C. If the electrode hard felt is not provided with a removable solid felt, the electrode hard felt around the electrode will be powdered in about two months, and will be scrapped as a whole, and needs to be replaced as a whole; if the removable solid felt is provided, the service life of the solid felt remains unchanged, and after powdering, only the solid felt around the electrode needs to be replaced, and the electrode hard felt can be used for about six months, which greatly increases the service life of the electrode hard felt and saves costs.

[0044] The hard felt also needs to be carbonized to form the product; the carbonization temperature is: 1800°C-1850°C; the carbonization time is: 168-174 hours; The carbonization process removes impurities, that is, removes water, resin and alcohol in the resin, and the moisture content of the hard felt finally obtained is: 0.02%-0.03%. Impurities are automatically removed during the high-temperature carbonization process.

[0045] After carbonization, the hard felt needs to be treated with surface roughness and coated. The coating method is brushing. The coating thickness is 0.4-0.5mm. The surface roughness Ra is less than 50, which can be selected according to actual needs without other restrictions.

[0046] The hard felt surface needs to be deposited after coating, so that the coating dries and adheres to the hard felt surface; the deposition method is to place the coated hard felt in a carbonization furnace and heat it to 950-1000°C, and take it out after heating for 3 days to complete the deposition.

[0047] The pulverized area is the electrode placement area.

[0048] The replacement hole 101 is a quadrangular pyramid hole; The fixed felt 20 is adapted to the replacement hole 101 and is in the shape of a quadrangular pyramid. The fixed felt 20 is embedded in the replacement hole 101. The inclination angle α of the truncated cone-shaped or prism-shaped solid felt is 10 to 60 degrees; The inclination angle β of the countersunk head-shaped solid felt is 10 degrees to 90 degrees.

[0049] The solid felt 20 is provided with an electrode mounting hole 201 , and the minimum thickness t of the solid felt 20 is 40 mm.

[0050] The brush material of the surface coating is a mixture of sol and fine graphite powder.

[0051] The solid felt 20 is made of the same material as the electrode hard felt 10 .

[0052] In the present invention, waste carbon fiber soft felt is reconstructed into hard felt, and the hard felt is processed into electrode hard felt. The electrode hard felt is provided with a detachable solid felt to achieve the reuse of the carbon fiber soft felt. After the solid felt is pulverized, the pulverized part can be directly replaced. In this way, the carbon fiber soft felt and electrode hard felt can be recycled, which greatly improves the resource utilization rate.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hard felt transformed from waste felt and its application in vacuum high temperature equipment, characterized in that ,include: S1, hard felt is made from waste carbon fiber soft felt; The waste carbon fiber soft felt is recycled as the raw material for manufacturing carbon fiber hard felt; the waste carbon fiber soft felt is cut into size felts, the size felts are stacked and bonded together and then cured into carbon fiber hard felt, so as to make full use of the waste carbon fiber soft felt; Specifically: S101, Cutting of waste felt Cut the waste carbon fiber soft felt into felts with a length*width*thickness of 1200*400*10 (mm); S102, size felt blank curing The size felts are bonded together with resin, and the bonding density is: 0.13-0.15g / cm³; after bonding, they are heated and cured with a hot press, and the heating temperature is: 140℃-160℃, and the heating time is: 110-130 minutes, and the hard felt is cured, and the hard felt is processed into a disc-shaped electrode hard felt; S2. A removable solid felt is set in the area where the electrode hard felt is easy to be powdered, so as to directly replace the powdered part after the area is powdered; S201, setting a replacement hole in the area where the electrode hard felt is prone to pulverization; S202, processing the solid felt, installing the solid felt in a detachable manner in the replacement hole.

2. The hard felt transformed from waste felt and the use of the hard felt in vacuum high temperature equipment as claimed in claim 1, characterized in that: The hard felt also needs to be carbonized to form the product; the carbonization temperature is: 1750°C-1850°C; the carbonization time is: 160-174 hours; Impurities are removed during the carbonization process, namely, water, resin and alcohol in the resin are removed, and the moisture content of the hard felt finally obtained is: 0.01%-0.03%.

3. The hard felt transformed from waste felt and the use of the hard felt in vacuum high temperature equipment as claimed in claim 2, characterized in that: After the hard felt is carbonized, it needs to be subjected to surface roughness treatment and surface coating; The coating method uses a brush to apply the material; the coating thickness is: 0.3-0.5mm.

4. The hard felt transformed from waste felt and the use of the hard felt in vacuum high temperature equipment as claimed in claim 3, characterized in that: The hard felt surface needs to be deposited after coating, so that the coating dries and adheres to the hard felt surface; the deposition method is to place the coated hard felt in a carbonization furnace and heat it to 900-1000°C, and take it out after heating for 3 days to complete the deposition.

5. The hard felt transformed from waste felt and the use of the hard felt in vacuum high temperature equipment as claimed in claim 1, characterized in that: The pulverized area is the electrode placement area.

6. The hard felt transformed from waste felt and the use of the hard felt in vacuum high temperature equipment as claimed in claim 1, characterized in that: The replacement hole is a frustum hole, a prism hole or a countersunk hole; The fixed felt is adapted to the replacement hole and is in the shape of a truncated cone, a prism or a countersunk head, and the fixed felt is embedded in the replacement hole; The inclination angle α of the truncated cone-shaped or prism-shaped solid felt is 10 to 60 degrees; The inclination angle β of the countersunk head-shaped solid felt is 10 degrees to 90 degrees.

7. The hard felt transformed from waste felt and the use of the hard felt in vacuum high temperature equipment as claimed in claim 6, characterized in that: The solid felt is provided with an electrode mounting hole, and the minimum thickness t of the solid felt is at least 40 mm.

8. The hard felt transformed from waste felt and the use of the hard felt in vacuum high temperature equipment as claimed in claim 4, characterized in that: The brush material of the surface coating is a mixture of sol and fine graphite powder.

9. The hard felt transformed from waste felt and the use of the hard felt in vacuum high temperature equipment as claimed in claim 1, characterized in that: The solid felt and the electrode hard felt are made of the same material.

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