CN101503843A - Pre-oxidized fiber filament / pre-oxidized fiber net tire composite pricking prefabricated body and method for manufacturing the same - Google Patents
Pre-oxidized fiber filament / pre-oxidized fiber net tire composite pricking prefabricated body and method for manufacturing the same Download PDFInfo
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- CN101503843A CN101503843A CNA2009100249028A CN200910024902A CN101503843A CN 101503843 A CN101503843 A CN 101503843A CN A2009100249028 A CNA2009100249028 A CN A2009100249028A CN 200910024902 A CN200910024902 A CN 200910024902A CN 101503843 A CN101503843 A CN 101503843A
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Abstract
The invention discloses a preoxidized silk long macrofiber/preoxidized silk screen tire needling prefabricated body and a preparation method thereof. The needling prefabricated body is a layered composite material; each layer is a monolayer composite material prepared from the preoxidized silk long macrofiber and a preoxidized silk screen tire; the monolayer composite material is formed by continuously needling radial fibers formed by preoxidized silk weftless macrofibers which are arrayed on the preoxidized silk screen tire in rows; and a plurality of monolayer composite materials are needled to form a composite needling prefabricated body. The products of the invention obtained by a modernized high-tech carbon/carbon sediment process has high carbon content and no layering, and excellent performances of strong wear resistance, high temperature resistance, radiation resistance, corrosion resistance, light weight and the like, and greatly reduces the production time and the manufacturing cost. The high-performance fiber product is a novel functional structural product. The unique performance and advanced production process of the high-performance fiber product determine wide application prospect of the carbon fiber products in the fields of aviation, space flight, civil construction, sports medicine, electronic communication and the like.
Description
Technical field:
The present invention relates to a kind of composite pricking prefabricated body, the high-performance composite pricking prefabricated body is after modern chemical high temperature, high pressure, every carbon/carbon depositing operation are handled, have characteristics such as high temperature resistant, rub resistance, quality be light, be the high section green wood that modernization development is generally acknowledged, the novel product of Aero-Space important structure part.The invention particularly relates to the composite pricking prefabricated body of making by PAN preoxided thread long fiber and pre-oxidation silk screen tire, in addition, the invention still further relates to the preparation method of this composite pricking prefabricated body.
Background technology:
Composite pricking prefabricated body after modern chemical high temperature, high pressure, every carbon/carbon depositing operation is handled, has characteristics such as high temperature resistant, rub resistance, quality are light, is the high section green wood that modernization development is generally acknowledged, is the novel product of Aero-Space important structure part.
Original technology of composite pricking prefabricated body is to adopt polyacrylonitrile-based carbon fibre long fiber and web of staple fibers tire to make three-dimensional precast body through multilayer acupuncture.Processing step mainly comprises: 1. staple card Cheng Houwei 1-2mm, the surface density that will grow for 50-60mm are 40-600g/m
2The net tire; 2. the net tire is laid to surface layer; 3. net tire and the acupuncture successively of carbon fiber long fiber are constituted three-dimensional precast body.
Above-mentioned is the process of original explained hereafter prefabricated carbon fiber body, wherein the fiber of Cai Yonging is the fiber through carbonization technique, its goods need pass through a series of reprocessings such as high temperature, carbonization again in subsequent deposition process, need the additive decrementation great amount of manpower and material resources, make production cost higher more than 30% than the overseas market, and the production cycle is prolonged greatly, is that production cost or production efficiency all can't be competed mutually with external product.
Summary of the invention:
The present invention is in order to overcome above-mentioned technical deficiency, provide a kind of PAN preoxided thread long fiber to combine the composite pricking prefabricated body made from pre-oxidation silk screen tire, this composite pricking prefabricated body becomes the Turbostratic of fiber the structure of three-dimensional order, modulus, intensity are increased substantially, and manufacturing cost declines to a great extent, in addition, the invention still further relates to the preparation method of this composite pricking prefabricated body.
A kind of preoxided thread long fiber of the present invention/preoxided thread net tire composite pricking prefabricated body, be composite stratified material, each layer is the compound material of individual layer that preoxided thread long fiber and pre-oxidation silk screen tire are made, the compound material of this individual layer does not have the latitude long fiber by preoxided thread and is arranged in the up one-tenth radial fiber of pre-oxidation silk screen tire and forms through pin system continuously, and the compound material of a plurality of individual layers forms composite pricking prefabricated body through acupuncture again.
Above-mentioned net tire thickness is 0.3-0.6mm, and it is 1.2-1.5mm that continuous preoxided thread does not have latitude long fiber/net tire binder course.Needling density is 40-50 pin/cm
3
The preparation method of above-mentioned preoxided thread long fiber/preoxided thread net tire composite pricking prefabricated body may further comprise the steps:
1) not having the latitude long fiber by preoxided thread, to cut into length be 50-100mm, surface density 60-200g/m
2Staple fibre, spray moisture and make staple fibre keep 3～5% humidity, put into baking oven afterwards and be heated to 30 degree, be incubated 28-30 hour, take out staple fibre after the opener shredding forms separation of material, the staple fibre after will separating again is laid to the net tire, and the superficial density of net tire is 54-206g/m
2, net tire thickness is 0.3-0.8mm;
2) PAN pre-oxidation long fiber is arranged in radial fiber on the net tire and carries out the compound material of acupuncture formation individual layer, long fiber content wherein is 70-87%, web of staple fibers tire content 30%-13%, and long fiber thickness is 0.6-0.9mm, surface density 256g-348g/cm
2, bulk density is 0.5-0.65g/cm
3, needling density is 40-50 pin/m
3
3) with step 2) the compound material of individual layer of preparation is elementary cell, successively intersects continuous needle through multi-angle and forms composite pricking prefabricated body, and interlayer density is controlled at 18 ± 2 layers/cm, and stinging density in advance is 36-40 pin/cm
3, depth of needle is 16-20mm.
The present invention adopts the PAN preoxided thread not have the latitude long fiber and pre-oxidation silk screen tire prepares the high-performance composite pricking prefabricated body, does not pass through carbonization technique and the PAN preoxided thread has the latitude long fiber, is predecessor's material of carbon fiber.The high-performance composite pricking prefabricated body that uses these the two kinds of manufacture of materials material cost more required than former technology saves about 30%, realized that subsequent product makes three-dimensional precast body through modernized carbon/carbonization with the technology of deposition three-in-one (high temperature, carbonization, deposition) and become possibility.Not only save human and material resources, and reduced the production cycle greatly.
The present invention has not only obtained renewal on raw material, be improved especially on production technology.For overcoming the technical deficiency of original production process, adopt the structure composition surface layer of automated machine equipment shredding and carded fiber, and (fiber can not be used any chemical treatments to be dispersed in the equipment list surface layer, otherwise influence the subsequent quality index of goods, adopt multi-angle successively to intersect acupuncture, the dynamic seal of realizing fibre structure is right, make the Turbostratic of fiber become the structure of three-dimensional order, the fiber web tire of making has the random level section structures in the planes of 360 degree, has increased substantially the modulus and the intensity of product behind the follow-up carbonization technique.
The present invention adopts pre-oxidation silk screen tire to be of value to the intensity that improves the precast body interlayer structure.Make the precast body levels integrated by intersection acupuncture, guarantee carburizing rate height in carbon/carbonization, the depositing operation, even structure.The PAN preoxided thread does not have latitude long fiber/compound precast body of pre-oxidation silk screen tire and makes precast body with carbon fiber entirely and compare, because of full precast body with carbon fiber is a front char-forming material in the deposition process, in subsequent deposition process, need through reprocessing technologies such as high temperature, carbonization, depositions, need a large amount of electric power resources and material resources, human input, increase the weight of the cost of product like this, add the carbon fiber material price again and be about 3 times of PAN pre-oxidized fibers silk, reduced cost about 30% at the finished product that the modern high technology depositing operation is made.Under the preceding topic of ensuring the quality of products, has competitiveness with external like product on the price.
The specific embodiment
A kind of composite pricking prefabricated body of the present invention, be composite stratified material, layers of material is respectively the net tire and continuous preoxided thread does not have latitude long fiber layer, the continuous preoxided thread of one deck net tire and one deck does not have the continuous preoxided thread of latitude long fiber layer acupuncture formation and does not have latitude long fiber/net tire binder course, and a plurality of continuous preoxided threads does not have latitude long fiber/net tire binder course acupuncture and forms composite pricking prefabricated body.Net tire thickness is 0.42-0.8mm, and it is 1.2-1.5mm that continuous preoxided thread does not have latitude long fiber/net tire binder course.Needling density is 40-45 pin/cm
3
Its processing step is: 1) not having the latitude long fiber by preoxided thread, to cut into length be 50-100mm, surface density 60-200g/m
2Staple fibre, spray moisture and make staple fibre keep 3～5% humidity, put into baking oven afterwards and be heated to 30 degree, be incubated 28-30 hour, take out staple fibre after the opener shredding forms separation of material, the staple fibre after will separating again is laid to the net tire, and the superficial density of net tire is 54-206g/m
2, net tire thickness is 0.3-0.6mm;
2) PAN pre-oxidation long fiber is arranged in radial fiber on the net tire and carries out the compound material of acupuncture formation individual layer, long fiber content wherein is 70-87%, web of staple fibers tire content 30%-13%, and long fiber thickness is 0.6-0.9mm, surface density 256g-348g/cm
2, bulk density is 0.5-0.65g/cm
3, needling density is 40-50 pin/m
3
3) with step 2) the compound material of individual layer of preparation is elementary cell, successively intersects continuous needle through multi-angle and forms composite pricking prefabricated body, and interlayer density is controlled at 18 ± 2 layers/cm, and stinging density in advance is 36-40 pin/cm
3, depth of needle is 16-20mm.
Just firm more at the middle-level many more precast bodies of acupuncture course, quality of item is also just high more.
Continuous preoxided thread does not have latitude long fiber/net tire in conjunction with the compound material of individual layer among the present invention, wants every cubic centimetre of 40-45 pin/cm by invented technology
3, prevent from layering not occur between long fiber and the net tire to reach, guarantee the precast body layer with layer between the dynamics that combines, help improving the quality of products.During making, long fiber/compound material of net tire individual layer and precast body, press the size of precast body total height calculation combination precast body with the acupuncture of multi-angle process orientation.Preoxided thread do not have latitude long fiber and pre-oxidation silk screen tire separately proportion be respectively: long fiber accounts for the 70%-90% of total amount; The web of staple fibers tire accounts for the 30%-10% of total amount.
Do not have about 30% can be shrunk to carbon/carbon fiber in subsequent deposition process because of preoxided thread has the latitude long fiber, so that preoxided thread does not have the long stapled content requirement of latitude is higher, but concrete numerical value will decide according to product function.As be used for senior break-in material, for meeting its low-density, high carburizing amount and high-intensity requirement, then long fiber content will be lacked.
Pre-oxidation silk screen tire precast body with add pre-oxidation and do not have the acupuncture precast body density 0.4g/cm that the latitude long fiber is made
3The precast body volume structure good uniformity that the net tire is made, fiber inner structure plane shearing is even, is that industrial heat insulation, the anti-width of cloth of high request is penetrated, high temperature resistant, high-intensity good composite.
Highdensity main body precast body is used for the high request parts composite in fields such as Aero-Space, and the preoxided thread long fiber content is than the high 20%-30% of short fibre content ratio, to satisfy the higher requirement of bulk density.
15 ± 1 layers/cm of every interlayer density, but pre-oxidation does not have latitude long fiber surface density 180g/m
2, getting bulk density in this technology is 0.42g/cm
3, be used for low-density composite, be used for high temperature resistantly, wear-resisting closing, characteristics such as endurance, conduction, heat conduction, corrosion-resistant, light weight the industrial high request zero compound carbon/carbon material of.
The formation combined process of above different shape precast body requires the pre-thorn requirement by the design precast body; As volume length * wide * high and special-shaped precast body thickness.PAN preoxided thread more than having put into practice in invention demonstration does not have latitude long fiber/pre-oxidation silk screen tire and combines, and successively intersects the composite stereo precast body that acupuncture makes through multi-angle, is the assurance that provides the foundation of follow-up three-in-one depositing operation.The finished product phosphorus content height that this precast body obtains after deposition, internal structure is evenly integrated, and is not stratified, has high-modulus, high strength simultaneously, and wear-resisting, high temperature resistant, endurance, and electrical and thermal conductivity performance is superior.
Below in conjunction with instantiation, further specify the present invention's application in practice, technical process and parameter setting are specifically addressed.
Example 1:PAN preoxided thread does not have the latitude long fiber and pre-oxidation silk screen tire is processed into staple fibre by automated machine, and the long 50-100mm of fiber is heated to 30 degree in humidity is 3～5% baking oven, and the performance of fiber just can improve after 24 hours.In this process, any chemical analysis and foreign material can not be admixed, otherwise follow-up Products Quality will be influenced.The utilization of automation equipment and the change of fibre property have determined the bond quality of fiber and net tire, make staple fibre density form separation of material, (can not be impaired because of staple fibre otherwise will influence follow-up goods) makes fiber transfer to automatic control grammes per square metre/thickness automatically in released state, utilize machinery to be laid to the net tire automatically, superficial density is 60-200g/m
2, these goods are that continuous preoxided thread does not have latitude long fiber and the compound material of pre-oxidation silk screen tire individual layer, and being arranged in by PAN pre-oxidation long fiber does not radially have the continuous pin system of latitude fiber and forms the compound material of individual layer, and long fiber content is 85%, surface density 325g/m
2, interlayer density is controlled at 18 ± 2 layers/cm, and needling density is 40 pins/cm
3, depth of needle is 16mm, and web of staple fibers tire thickness is 0.3mm, and long fiber thickness is 0.6mm, and bulk density is 6.7 ± 3g/cm
3These goods are to constitute PAN pre-oxidized fibers silk/pre-oxidation silk screen tire composite stereo precast body to have entered the deposition new technology of modernization reform, shortened the three-in-one time, provide cost savings, has light weight, high temperature resistant contour performance, this precast body are applicable to Aero-Space parts carbon/carbon compound material goods.
Example 2: the net tyre surface density by above-mentioned process combination is 54g/m
2, pre-oxidation long fiber surface density is 306g/m
2, by preoxided thread do not have latitude radially long fiber by with carry out successively replacing angle (60 °-120 °-240 °) acupuncture after the acupuncture of net plies is compound and combine with the plane, by technological requirement needling density 40 pins/cm
3, depth of needling is 16mm, presses above technological requirement 16 layers/cm of plane multi-angle acupuncture interlayer density successively, and the web of staple fibers plies is thick to be 0.4mm, and no latitude is long fiber thickness 0.8mm radially, equals bulk density 0.576g/cm
3, the web of staple fibers plies is than 20% three-dimensional precast body.This precast body is made high temperature resistant, high break-in, contour feature performance benefit through modernized depositing operation, greatly reduces cost than former market product.Can be used for the contour claimed structure spare of skidding dish.
Example 3: by the process combination of above-mentioned technology demonstration, net plies surface density is 90g/cm
2, the vertical long fiber surface density of pre-oxidation 256g/cm
2By technology radially long fiber with carry out plane multi-angle (60 °-120 °-240 °) acupuncture successively after the acupuncture of net plies is compound and combine, by technological requirement needling density 40 pins/cm, interlayer density is 14 layers/cm, the web of staple fibers plies is 0.8/mm, and no latitude radially long fiber thickness is that 1.0mm equals bulk density 0.5g/cm
3, web of staple fibers plies ratio is 30% three-dimensional precast body.The goods that this precast body is made through high-tech depositing operation, can be used for the industrial high request parts examples of materials 5 of characteristics such as wear-resisting, endurance, conduction, heat conduction: by the process combination of above-mentioned technology demonstration, net plies surface density is 206g/cm
2, 17 layers/cm of interlayer density (not elongated fibres) acupuncture combination successively on the plane, needling density 51 pins/cm, net plies thickness is 1.5mm, the formation bulk density is 0.35g/cm
3Three-dimensional precast body, the goods that this precast body is made through modernized depositing operation have radioresistance, performance such as heat insulation, high temperature resistant, can be used for metallurgy industry high temperature furnace, medical equipment, anti-insulating layer material, radioresistance parts material.
Claims (4)
1, a kind of preoxided thread long fiber/preoxided thread net tire composite pricking prefabricated body, be composite stratified material, it is characterized in that: each layer is the compound material of individual layer that preoxided thread long fiber and pre-oxidation silk screen tire are made, the compound material of this individual layer does not have the latitude long fiber by preoxided thread and is arranged in the up one-tenth radial fiber of pre-oxidation silk screen tire and forms through pin system continuously, and the compound material of a plurality of individual layers forms composite pricking prefabricated body through acupuncture again.
2, preoxided thread long fiber according to claim 1/preoxided thread net tire composite pricking prefabricated body, it is characterized in that: net tire thickness is 0.42-0.8mm, it is 1.2-1.5mm that continuous preoxided thread does not have latitude long fiber/pre-oxidation silk screen tire binder course, and interlayer density is 14 ± 1 layers/cm.
3, composite pricking prefabricated body according to claim 1 and 2 is characterized in that: needling density is 40-45 pin/cm
3
4, the preparation method of a kind of preoxided thread long fiber/preoxided thread net tire composite pricking prefabricated body is characterized in that may further comprise the steps:
1) not having the latitude long fiber by preoxided thread, to cut into length be 50-100mm, surface density 60-200g/m
2Staple fibre, spray moisture and make staple fibre keep 3～5% humidity, put into baking oven afterwards and be heated to 30 degree, be incubated 28-30 hour, take out staple fibre after the opener shredding forms separation of material, the staple fibre after will separating again is laid to the net tire, and the superficial density of net tire is 54-206g/m
2, net tire thickness is 0.3-0.8mm;
2) PAN pre-oxidation long fiber is arranged in radial fiber on the net tire and carries out the compound material of acupuncture formation individual layer, long fiber content wherein is 70-87%, web of staple fibers tire content 30%-13%, and long fiber thickness is 0.6-0.9mm, surface density 256g-348g/cm
2, bulk density is 0.5-0.65g/cm
3, needling density is 40-50 pin/m
3
3) with step 2) the compound material of individual layer of preparation is elementary cell, successively intersects continuous needle through multi-angle and forms composite pricking prefabricated body, and interlayer density is controlled at 18 ± 2 layers/cm, and stinging density in advance is 36-40 pin/cm
3, depth of needle is 16-20mm.
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| CN101691684B (en) * | 2009-09-23 | 2011-02-09 | 北京航空航天大学 | Preparation and carbonization method of needle-punched pre-oxidative fiber prefabricated part |
| CN102152555A (en) * | 2010-11-01 | 2011-08-17 | 陕西蓝太航空设备有限责任公司 | Annular preform for manufacturing carbon/carbon composite material brake disc and knitting process method thereof |
| CN102731131A (en) * | 2012-07-13 | 2012-10-17 | 宜兴市飞舟高新科技材料有限公司 | High-performance fiber heat-insulating material prefabricating bodies and preparation method thereof |
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| CN104244475A (en) * | 2013-06-09 | 2014-12-24 | 浙江昱辉碳纤维材料有限公司 | Processing method of carbon fiber heating pad |
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| CN108842296A (en) * | 2018-08-22 | 2018-11-20 | 青岛高泰新材料有限公司 | Multi-angle carbon fiber precast body preparation method |
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| CN101691684B (en) * | 2009-09-23 | 2011-02-09 | 北京航空航天大学 | Preparation and carbonization method of needle-punched pre-oxidative fiber prefabricated part |
| CN102152555A (en) * | 2010-11-01 | 2011-08-17 | 陕西蓝太航空设备有限责任公司 | Annular preform for manufacturing carbon/carbon composite material brake disc and knitting process method thereof |
| CN102152555B (en) * | 2010-11-01 | 2014-06-04 | 陕西蓝太航空设备有限责任公司 | Annular preform for manufacturing carbon/carbon composite material brake disc and knitting process method thereof |
| CN102731131A (en) * | 2012-07-13 | 2012-10-17 | 宜兴市飞舟高新科技材料有限公司 | High-performance fiber heat-insulating material prefabricating bodies and preparation method thereof |
| CN102729539A (en) * | 2012-07-13 | 2012-10-17 | 宜兴市飞舟高新科技材料有限公司 | Carbon fibre puncture preform and preparation method for same |
| CN104244475B (en) * | 2013-06-09 | 2016-04-20 | 嘉兴启晟碳材料有限公司 | Processing method of carbon fiber heating pad |
| CN104244475A (en) * | 2013-06-09 | 2014-12-24 | 浙江昱辉碳纤维材料有限公司 | Processing method of carbon fiber heating pad |
| CN104711774A (en) * | 2015-03-31 | 2015-06-17 | 赵晓明 | Full-carbon-fiber weftless cloth containing carbon-fiber filaments in positive and negative 45-degree directions and preparation method thereof |
| CN104711775A (en) * | 2015-04-01 | 2015-06-17 | 赵晓明 | Continuous dispersible filament fiber needled felt and preparation method thereof |
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| CN109955551A (en) * | 2017-12-21 | 2019-07-02 | 宜兴市宜泰碳纤维织造有限公司 | A kind of preparation method of the compound oxidization fiber precast body of carbon fiber |
| CN108842296A (en) * | 2018-08-22 | 2018-11-20 | 青岛高泰新材料有限公司 | Multi-angle carbon fiber precast body preparation method |
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| CN110863296B (en) * | 2018-08-27 | 2023-02-21 | 霍尼韦尔国际公司 | Layered carbon fiber preform |
| CN111636144A (en) * | 2020-06-16 | 2020-09-08 | 浙江星辉新材料科技股份有限公司 | Preparation process of carbon-carbon composite material flat plate |
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