595 results about "Fiber structure" patented technology

The invention discloses a mixed gas-imitating gel fiber as well as a preparation method and application thereof, and belongs to the technical field of fiber materials. The mixed gas-imitating gel fiber is prepared from the following components: cellulose dispersion liquid, a silane coupling agent and viscose in a mass ratio of (1-3): (0.2-0.8): (5-10), comprising the following steps: adding sodium hydroxide into a cellulose dispersion liquid, adjusting the pH value to be alkaline, adding viscose and a silane coupling agent, and carrying out ultrasonic stirring to prepare a mixed spinning solution; the mixed spinning solution is extruded into a coagulating bath through a wet spinning device to be drafted, wet fibers are obtained, and the mixed gas-imitating gel fibers are obtained after freeze drying. The aerogel fiber disclosed by the invention has low heat conductivity coefficient, high mechanical strength and extreme temperature resistance, can solve the problem that the densification and porosity of a traditional fiber structure are difficult to balance, and effectively expands the application prospect of the aerogel fiber in the fields of cold protection, warm keeping and the like.

To provide a cation-dyeable polyester fiber structure, a production method of the same, and a uniform for medical use.SOLUTION: A cation-dyeable polyester fiber structure includes a cationic dye, a quinoline compound, and an ultraviolet absorber, where 0.03 mass% or more and 0.80 mass% or less of the quinoline compound is included to a mass of the cation-dyeable polyester fiber structure, a color difference ΔE between before and after irradiating the cation-dyeable polyester fiber structure with ultraviolet carbon arc lamplight is 2.0 or lower, and an antibacterial activity value A50 after 50 times of high temperature acceleration washing is larger than a standard cloth growth value F in an antibacterial evaluation method described in an SEK mark textile product certification standard.SELECTED DRAWING: None

The invention discloses an optical fiber three-dimensional shape sensor based on an optical frequency domain reflection technology and an application method of the optical fiber three-dimensional shape sensor, the optical fiber three-dimensional shape sensor comprises a base material and more than three optical fibers, and all the optical fibers are spirally wound and fixed on the surface of the base material at equal intervals and constant screw pitches to form distributed sensing units; according to the application method, measurement signals of all the optical fibers are obtained, and axial strain and strain are calculated; calculating the total curvature vector of the reconstruction curve of the measured object; calculating a bending direction angle and a curvature of the reconstruction curve of the measured object; performing differential calculation on the bending direction angle to obtain the torsion rate of the reconstructed curve of the measured object; and reconstructing the three-dimensional shape of the measured object according to the curvature and the torsion of the reconstructed curve of the measured object. The invention aims to realize synchronous measurement of bending, torsion and axial strain by using a distributed sensing unit formed by a multi-fiber structure which is spirally wound at the same interval and at a constant screw pitch.

The invention discloses a preparation method of a bionic cornea stroma lens for refractive correction, which comprises the following steps: solution preparation: dissolving type I collagen in an acetic acid solution, adding a film aid, fully stirring, and centrifugally defoaming to obtain a type I collagen composite solution; the I-type collagen composite solution is poured into an assembling groove, the curvature radius of titanium metal is set to be 6.8-8.0 mm, the titanium metal serves as a working electrode material, platinum metal serves as a counter electrode material, current parameters are set according to the needed thickness of the lens blank, the density is 3.50-6.50 mA / cm < 2 >, and the thickness of the lens blank is set to be 3.50-6.50 mA / cm < 2 >; a high-transparency cornea embryo material which is uniform in curvature in all directions and similar to human cornea fiber structure arrangement is formed after electrochemical assembly and cross-linking curing, accurate cutting machining is carried out through excimer laser, a concave / convex matrix lens with the needed correction degree is obtained, the correction precision is high after cornea interlayer implantation, and the correction precision is high. And meanwhile, the compound has excellent performance in the aspects of in-vivo stability and biological safety.

To provide a fiber structure suitable for a wear for healthcare and nursing care workers in which inferior light resistance and heat resistance which are intrinsic to cationic dyeable polyester fiber dyed with a cationic dye are simultaneously overcome, and a method for manufacturing the fiber structure.SOLUTION: A fiber structure containing cationic dyeable polyester fiber dyed with a cationic dye contains a benzotriazole-based compound by 0.50 mass% to 3.50 mass% based on the mass of the fiber structure, and contains a zinc pyrithione-based compound by 0.05 mass% to 0.20 mass% based on the mass of the fiber structure.SELECTED DRAWING: None

The invention discloses a fireproof cloak with an aerogel composite multi-layer structure, and belongs to the technical field of fireproof cloaks. Comprising an outer layer, a middle layer and an inner layer, wherein the outer layer is made of carbon fiber cloth; the middle layer is made of modified aerogel; and the inner layer is made of breathable flame-retardant cloth. According to the prepared cloak, the outer layer is the carbon fiber cloth, the carbon fiber structure is stable, middle-layer aerogel can be protected, external mechanical damage can be borne, the mass is light, and the wearing burden is reduced; the middle layer of the prepared cloak is the modified aerogel, so that the cloak is endowed with excellent heat insulation property and fire resistance; the inner layer of the prepared cloak is the aramid staple fiber needle-punched cloth, so that the cloak has the fireproof performance and also has certain wearing comfort; in conclusion, through the three-layer composite design of the carbon fiber outer layer, the modified aerogel middle layer and the aramid fiber inner layer, the composite material has the advantages of being ultra-light, high in fireproof performance and high in comfort and has important application value in the technical field of fireproof cloaks.

The invention discloses an all-fiber vortex interference system and a phase variation measurement method, belongs to the field of optical precision instrument design and test, and aims to realize ultrahigh-precision phase variation measurement by using an all-fiber structure. The vortex interference system comprises a light source module, an optical fiber beam splitting module, an optical fiber sensing module, an optical fiber mode conversion module, an optical fiber mode interference module and an imaging module in sequence along an optical path. The phase variation measurement method is a phase variation demodulation method based on angular Fourier transform, which is provided for the all-fiber vortex interference system. The interferometer provided by the invention does not need a complicated light path alignment step of a traditional interferometer, and the sensitivity of the all-fiber vortex interferometer is further improved.

The invention relates to a bionic meniscus 3D printing method and system, and the method comprises the steps: reading a meniscus STL model, carrying out the data preprocessing of the data of the model, and carrying out the construction to obtain a concave envelope contour; performing offset processing and four-curve segmentation to generate an elliptic equation fiber field; establishing a bidirectional mapping relation between a parameter space of an elliptic equation fiber field and a meniscus physical space based on an RBF mapping theory; based on a meniscus fiber density gradient change theory, performing simulation in a parameter space of the elliptic equation fiber field to obtain a bionic gradient fiber field; according to the meniscus STL model, the bidirectional mapping relation and the bionic gradient fiber field, fiber path coordinates of a meniscus physical space are obtained, and a 3D printing path is generated; and printing according to the 3D printing path to obtain the bionic meniscus. Precise simulation of a natural meniscus complex fiber structure is achieved through mathematical modeling, and the technical problems that in the prior art, fiber field control precision is insufficient, and regional characteristics are difficult to achieve are solved.

The device comprises a furnace body and a conveying system, the furnace body comprises a tunnel kiln type gas isolation bin section A, a pyrolysis section, a gas isolation bin section B, an oxidation section and a cooling section which are sequentially arranged, and mechanical sealing is achieved between the gas isolation bin section A, the pyrolysis section, the gas isolation bin section B, the oxidation section and the cooling section; the conveying system comprises a transfer trolley A and a transfer trolley B which are located at the two ends of the furnace body, a rotary line is arranged above the conveying system, a pull-push device B is arranged on the transfer trolley A, a pull-push device C is arranged on the transfer trolley B, a trolley is arranged below the rotary line, and the trolley is connected with a pull-push device D; the defect that a conventional combustion device cannot treat large-size raw materials is overcome, the fan blade crushing process is avoided, the fiber structure is protected, and the quality of recycled fibers is high; a pull-push structure is designed, the staying time of the materials in the furnace is controlled by controlling the rhythm of the push-in trolley, sufficient pyrolysis and oxidation of the materials are ensured, self-heating recycling is achieved through the combined pipeline, fuel consumption is low, and environmental protection is facilitated.

The invention discloses a high-temperature strain film sensor for detecting thermal stress of a small square billet crystallizer, and relates to the technical field of sensors, the high-temperature strain film sensor comprises a composite system formed by fiber structures, the fiber structures are interwoven and interspersed, and the composite system sequentially comprises a substrate layer, a high-temperature insulating layer, a piezoelectric film layer and a multifunctional composite layer from bottom to top; a channel is arranged in the piezoelectric film layer, the channel penetrates to the high-temperature insulating layer and the multifunctional composite layer, and the channel is connected with external equipment through a lead electrode. The multifunctional composite layer comprises a thermocouple array and a sensitive grid unit which are distributed in parallel and interwoven, and the thermocouple array is used for superposing the thermoelectric effect and increasing the output situation; the sensitive grid unit is used for converting strain of the crystallizer steel pipe into electric signals through sensitive grid deformation and outputting the electric signals, and real-time measurement of stress and strain on the surface or in the crystallizer is achieved. The sensor designed by the invention is good in high temperature resistance, good in structural stability, long in service life and high in measurement precision.

The invention provides a temperature and pressure optical fiber sensor based on MZ interference and FP interference and a preparation method and a sensitivity measurement method thereof, the temperature and pressure optical fiber sensor comprises an 8-shaped optical fiber structure and a Bragg grating optical fiber structure, and the optical fiber structures are cascaded to form an MZ-FP mixed interference structure. And simultaneous high-precision measurement of the temperature and the pressure is realized. On the basis of a traditional balloon-shaped MZ interference structure, the 8-shaped optical fiber structure is designed to be used for achieving MZ interference, the structure can better excite optical signals, therefore, MZ interference with the better effect is achieved, high-precision temperature measurement is achieved, and meanwhile compared with other existing optical fiber sensing structures, the optical fiber sensing structure has the advantages that the optical fiber sensing structure is simple in structure and low in cost. The possibility of optical fiber breakage in the manufacturing process is greatly reduced, and rapid preparation can be realized; and meanwhile, the cascaded Bragg grating fiber structure can realize FP interference, so that high-precision measurement of pressure is realized, and the influence on MZ interference is relatively small.

The present application relates to a kind of superfine alkali earth hexaaluminate inorganic fiber and its preparation method, the diameter of the alkali earth hexaaluminate inorganic fiber described is 0.1 μm-3.0 μm, and it is continuously adjustable in this range, the prepared alkali earth hexaaluminate fiber keeps fiber flexibility in the temperature range of room temperature to high temperature 1300 DEG C, and keeps fiber crystal phase stability and fiber form integrity at high temperature 1400 DEG C.The preparation method is to mix aluminum sol, alkali earth salt, high molecular polymer and dissolve in water to obtain sol, then electrospinning precursor fiber is obtained, and the precursor fiber is obtained by high-temperature heat treatment to obtain alkali earth hexaaluminate inorganic fiber.The present application has low cost, and fiber structure stability is good, has wide application prospect in the fields such as catalyst, catalyst carrier, fiber structure reinforcement, heat insulation and the like.

This invention relates to a rare earth aluminate inorganic fiber and its preparation method, wherein the main crystalline phase of the rare earth aluminate is composed of ReAl. 11 O 18 Composed of ReAlO3 (Re = La, Ce, Pr, Nd), the relative content of the two phases is continuously adjustable within the range of 0–100 wt%. The fiber diameter ranges from 0.2 μm to 6.0 μm. The fiber maintains flexibility under high-temperature conditions from room temperature to 1450℃ and maintains microstructure and crystalline phase stability from room temperature to 1650℃. The preparation method uses aluminum sol as the aluminum source, rare earth salts as the rare earth source, and a polymer as a spinning aid. Precursor fibers are obtained by electrospinning or centrifugation, and the precursor fibers are then heat-treated to obtain rare earth aluminate inorganic fibers. This invention features sol stability, good spinnability, simple preparation process, and low cost. The prepared inorganic fibers have a stable and controllable structure, intact morphology, and good flexibility, showing promising applications in thermal insulation, flexible electronics, flue gas dust removal, and battery separators.

The invention discloses a surface flaw detection device for modal fiber fabric processing, and relates to the technical field of flaw detection, the surface flaw detection device comprises a bottom plate, a supporting assembly, a driving assembly and an expansion assembly, the supporting assembly is fixedly connected to the top of the bottom plate, and the supporting assembly comprises a supporting frame and a positioning seat. In the invention, the fabric roll in a stretched state can expand the fiber structure and expose the defect points in the fiber interwoven structure of the modal fiber fabric surface, so that compared with defect detection of the modal fiber fabric in a tiled state, the defect detection method can avoid the problem that smaller defects of the modal fiber fabric cannot be effectively displayed due to stacking of the fiber structures; after the fabric roll is stretched and expanded, the detection camera is used and runs to carry out image visual detection on the surface of the fabric roll, so that whether the surface of the fabric roll has flaws or not can be judged, the flaws of the modal fiber fabric are comprehensively detected, and the accuracy of a detection result is improved.

Disclosed is a media for capturing carbon dioxide from a gas stream of ambient air or industrial exhaust. The media includes a fiber matrix having fine fiber strands formed from at least one first polymer capable of capturing carbon dioxide through absorbance or adsorbance. The fine fiber strands have a first mean diameter of 5000 nm or less. Further, the media includes a plurality of nodules dispersed in the fiber matrix, and the plurality of nodules are made from a nodule material capable of capturing carbon dioxide through absorbance or adsorbance. The media can be configured for use in a carbon capture element of a carbon capture cell disposed within a carbon capture system, such as a direct air or point source carbon capture system.

The invention provides a mid-infrared optical frequency comb. The mid-infrared optical frequency comb comprises a near-infrared optical frequency comb seed source of a polarization-maintaining all-fiber structure; the all-fiber nonlinear amplification and pulse compression module is connected with the near-infrared optical frequency comb seed source through a polarization maintaining fiber and is used for amplifying the power of the seed light and compressing the pulse width after generating a linear chirped pulse; the all-fiber nonlinear spectrum broadening module is connected with the all-fiber nonlinear amplification and pulse compression module through a polarization maintaining fiber and is used for broadening a laser spectrum; the difference frequency module is used for receiving the laser pulse processed by the all-fiber nonlinear spectrum broadening module and generating an intermediate infrared laser pulse through intra-pulse self-difference frequency; wherein the seed source, the all-fiber nonlinear amplification and pulse compression module and the all-fiber nonlinear spectrum broadening module are connected through a polarization maintaining fiber to form an all-fiber integrated structure. By adopting the scheme, the anti-interference capability of the system can be enhanced, miniaturization and high operation reliability are realized, the debugging process is simplified, and the difference frequency efficiency is improved.

The invention relates to the technical field of medical apparatus and instruments, and discloses an ultra-pulse thulium fiber laser therapy apparatus, which comprises a laser, a coupler, a lithotripsy energy transmission optical fiber, a thulium fiber laser head, an electrical device, a mainboard, an air cooling device and an equipment case, the laser is of an all-fiber structure and outputs 1940-nanometer near-infrared laser, the 1940-nanometer near-infrared laser is transmitted to the thulium fiber laser head through the thulium-doped double-clad fiber, and a collimating lens set is arranged at the light emitting end of the laser head and used for shaping the laser into collimated light beams. An aspheric focusing lens and an optical fiber clamping mechanism are arranged in the coupler, and the coupler is used for focusing the collimated light beam into the lithotripsy energy transmission optical fiber; the lithotripsy energy transmission optical fiber is a multimode quartz optical fiber, the end face is polished and plated with an anti-reflection film, one end is connected with the coupler through an FC / APC interface, and the other end is connected with an external replaceable treatment handle; and the electrical device is electrically connected with the mainboard. According to the invention, efficient and intelligent heat dissipation management is realized, and the energy transmission efficiency and the output stability are improved.

This invention relates to a modified titanium dioxide for matting polyester fibers and its preparation method. The modified titanium dioxide comprises a mesoporous titanium dioxide core and a cysteine ​​graft layer grafted into the pores of the mesoporous titanium dioxide. The mesoporous titanium dioxide core is prepared by evaporation-induced self-assembly using an alkenyl sulfonate surfactant as a liquid crystal template and tetraethyl or tetrabutyl titanate as the titanium source. Due to the self-polymerization reaction of the alkenyl sulfonate, the resulting polyalkenyl sulfonic acid compound reduces the crystallinity of the mesoporous titanium dioxide, thereby significantly reducing its photocatalytic activity. The mesoporous titanium dioxide is mixed with cysteine ​​and heated to graft cysteine ​​into its pores. The presence of cysteine ​​results in the modified titanium dioxide exhibiting both good matting properties and suppressed photocatalytic activity, preventing fiber structure damage from prolonged ultraviolet irradiation when applied to polyester fibers.

The invention relates to the technical field of leather products, and particularly discloses a leather product feature recognition and authentication method and system based on deep neural network learning. According to the scheme, visible light, near-infrared reflection and polarized light interference images of leather are obtained through a multi-mode imaging technology, surface texture and color, internal fiber structure and section fiber arrangement features are extracted respectively and converted into standardized feature vectors, the three types of features are fused to construct a comprehensive leather feature vector, and the comprehensive leather feature vector is obtained. A deep neural network is input for authenticity identification, a confidence score is output, objective quantification of full-dimensional physical characteristics from the surface to the interior is realized by outputting the confidence score, subjectivity and one-sidedness of traditional artificial identification are overcome, and the method has efficient and large-scale accurate identification capability.

The invention provides a composite phase change energy storage material based on a multilayer hollow spinning structure and a preparation method thereof, and belongs to the technical field of phase change fibers. The invention provides a composite phase change energy storage material based on a multi-layer hollow spinning structure, the composite phase change energy storage material based on the multi-layer hollow spinning structure is of a multi-layer tubular fiber structure, and the composite phase change energy storage material sequentially comprises a core layer phase change material, a second shell layer, a third layer phase change material and an outermost shell layer from inside to outside. The composite phase change energy storage material based on the multi-layer hollow spinning structure provided by the invention is of a four-layer tubular fiber structure, has higher phase change material loading capacity, high mechanical strength, capability of quickly responding to environment temperature and good leakage prevention effect, can realize intelligent thermal management, and overcomes the defect of poor environmental adaptability of single-function textiles.

This invention discloses an FBG strain sensor based on misaligned fusion spliced ​​coreless optical fiber and its fabrication method. The sensor comprises an input single-mode fiber, multiple segments of coreless optical fiber, and an output single-mode fiber connected sequentially. The input single-mode fiber is fused together with the first segment of the coreless fiber in a misaligned manner, and the next segment of the coreless fiber is fused together with the previous segment in a misaligned manner, with the misalignment direction of the next segment opposite to that of the previous segment, but the misalignment distance being the same. The output single-mode fiber and the last segment of the coreless fiber are fused together axially. The central axes of the input and output single-mode fibers are collinear, and the cores of the input and output single-mode fibers are connected by a photolithographically written straight waveguide. A fiber Bragg grating is then optically etched along the straight waveguide. This invention uses femtosecond lasers to fabricate the FBG on the misaligned fiber structure, increasing the structure's strain response and making the strain sensitivity of the FBG on this structure higher than that of an FBG fabricated on ordinary silica optical fiber.

The application discloses a Stokes parameter encoder, which comprises a fiber optical circulator and an optical path round trip path; a polarization maintaining fiber Faraday rotator is arranged on the optical path round trip path to rotate the polarization of light by 45 degrees; the fiber optical circulator is a polarization maintaining fiber optical circulator; the fiber optical polarization beam splitter is a polarization maintaining fiber optical polarization beam splitter; the delay fiber is a polarization maintaining delay fiber; and the fiber optical phase modulator is a polarization maintaining fiber optical phase modulator. The application further discloses a parameter encoding method of the encoder. The above technical scheme can perfectly offset the rotation angle deviation problem caused by the device, can guarantee the stability of the rotation angle regardless of the angle deviation of the device, is easy to realize the driving circuit, is easy to integrate and small in size due to the pure fiber structure, and can realize the continuous variable quantum key distribution of the complete GG02 protocol based on the Stokes encoder.

The invention discloses difunctional catalysis-adsorption Chinese art paper based on fiber structure modification and application of the difunctional catalysis-adsorption Chinese art paper in baijiu aging, and belongs to the technical field of baijiu production. According to the Xuan paper, raw Xuan paper serves as a base body, a catalytic function layer containing metal ions, an organic acid catalyst and nano bentonite is formed through an impregnation technology, and esterification reaction can be promoted; an adsorption layer containing a modified ZSM-5 molecular sieve or activated carbon fiber is formed on the surface through electrostatic spinning, and C3-C5 aldehydes, sulfides and other impurities can be selectively adsorbed. A micro-aerobic environment is maintained by utilizing a Chinese art paper porous structure, a synergistic effect of catalysis and adsorption is realized, the ageing period of a white spirit ceramic jar can be shortened, the quality of a white spirit body is improved, and the problems of low efficiency and difficulty in flavor regulation and control of a traditional jar sealing mode are solved.

The invention provides a high-precision simulation method for filtering performance of a mining dustproof mask fiber structure. The high-precision simulation method comprises the following steps: establishing a randomly distributed fiber aggregate model; a transient state is activated in Fluent, a turbulence model Realizable k-epsilon is selected, the pressure drop of a mining dust mask and the flow field characteristics of nanoscale fiber gaps are simulated and predicted, a DPM model is activated, the migration track of 0.3-10 [mu] m inhalable particles is tracked, and the dust trapping process of a fiber structure is simulated in the transient state environment. By simulating the influence of different fiber diameters, fiber volume fractions, airflow flows and the like on the filtering performance of the fiber structure of the mining dust mask, the research and development of the high-filtering-performance mining dust mask can be guided in a targeted manner, and the influence of the internal fiber structure of the dust mask on the filtering performance of the dust mask is mastered.

The utility model provides an auxiliary oiling device of a drawing machine, which belongs to the field of textile production and comprises a support, a limiting mechanism used for adjusting the oiling angle and position is arranged on the side wall of the support, and an oiling assembly used for oiling drawn fibers is arranged on the limiting mechanism. The oiling assembly is provided with an oil conveying assembly used for conveying lubricating oil to the oiling assembly. According to the oil feeding assembly, when the oil feeding assembly is used, a V-shaped plate is fixedly connected with the telescopic inner pipe through welding, the bottom of the V-shaped plate is in bolted connection with a fixing plate through three fixing bolts, a stable structure is formed, the installation angle of oil absorption felt is guaranteed, disassembly and maintenance are convenient, and the oil absorption felt is of a porous fiber structure and can absorb a large amount of lubricating oil and slowly release the lubricating oil; meanwhile, the oil absorption felt is soft in texture, and mechanical damage cannot be generated when the oil absorption felt makes contact with silk threads.

The application discloses aramid composite paper and a preparation method and application thereof, and relates to the technical field of aramid paper. The application provides aramid composite paper, which comprises three layers of fiber structure layers which are sequentially stacked, the first layer of fiber structure layer comprises aramid short-cut fibers and polyphenylene sulfide pulp, the second layer of fiber structure layer comprises plant fibers, and the third layer of fiber structure layer comprises aramid fibrids and polyimide fibers. The three-layer structure of the aramid composite paper of the application strengthens the compactness and uniformity of the insulating paper from two aspects of macro and micro, thereby enhancing the mechanical and electrical strength. Meanwhile, the specific selection of the specific first layer and third layer can better cooperate with the second layer of fiber structure layer, strengthen the local overheating identification function of the aramid composite paper, and solve the problems of the non-ideal uniformity of the existing aramid composite paper and the incapability of identifying local overheating on the basis of maintaining the excellent electrical insulation and heat resistance of the original aramid paper.

The invention relates to the technical field of acoustic wave device application and biological tissue engineering, in particular to a method for constructing a multi-component heterogeneous fiber structure under the assistance of acoustic tweezers. According to the method, an acoustic tweezers technology and a microfluidic spinning technology are combined, an electric signal is converted into an acoustic surface wave through the piezoelectric effect of a piezoelectric material, and a beam-shaped acoustic standing wave field is formed in a microchannel of a specific structure; different target cells form a stable fiber configuration under the interaction of microchannel limitation and acoustic radiation force, and spatial precise classification and arrangement of multiple types of cells are realized. The low-temperature-sensitive hydrogel is introduced in the cell injection process, and the fiber scaffold is formed after ultraviolet curing, so that the fiber structure of the cells is still maintained after the sound field is removed. The cells treated by the surface acoustic wave can form a complex three-dimensional bionic tissue structure more easily, and the cell viability is remarkably improved. Various fiber structures can be formed by regulating and controlling sound field parameters, and great potential is shown in the field of in-vitro barrier model construction.

The invention discloses a reinforced protection method for an edge section of a full-paper-based container, which belongs to the technical field of paper-based container treatment, and comprises the following steps: step 1, end surface pretreatment: carrying out chip removal treatment on the cut end surface of a paper tube, and keeping a loose state of fibers; step 2, local impregnation and permeation: vertically and downwards immersing the end surface of the paper tube into the prepared solution, fixing the immersion depth to be 0.8 mm, keeping the immersion depth for 5 seconds, and enabling the paper tube to naturally permeate upwards along a gap of a paper layer by utilizing the low viscosity characteristic of the liquid; and 3, gradient curing is conducted, specifically, the treated paper tube is placed in circulating hot air at the temperature of 55 DEG C to be dried for 15 minutes. Different from a traditional method for coating the whole pipe body or compounding a plastic inner container, only the weakest cutting end face is subjected to precise treatment, the equivalent and even better protection effect is achieved, meanwhile, the use amount of chemicals is greatly reduced, the production cost is reduced, and the original advantages of air permeability of the wall body of the paper pipe and the like are kept.

The invention discloses a wafer capacitor adopting a carbon fiber pin and a production process and production equipment thereof. The wafer capacitor comprises a wafer capacitor body, a silver electrode and the carbon fiber pin. The production process comprises the steps of adsorbent preparation, carbon fiber wrapping with the adsorbent, pre-reduction reaction, insulation layer wrapping and wafer capacitor preparation. The production equipment comprises a lifting pool, a silver ion soaking pool, a phosphorous acid soaking pool, a hot extrusion mechanism, an extruder and a laser welding unit. According to the method, carbon fibers are wrapped with an adsorbent with high silver adsorption, a porous conductive carbon fiber structure with a nano-silver wire network is produced through pre-reduction of a reducing agent and a high-temperature reducing atmosphere reaction, and tin-free welding is carried out on a high-silver-content modified carbon fiber pin and silver on the surface of a wafer capacitor through laser welding; and the obtained product has the advantages of light weight, high strength, high conductivity, high welding strength, corrosion resistance, high temperature resistance and the like, so that the wafer capacitor adapts to a severe environment, and the application range is widened.