KUGADZIRA SEI CARBON FIBER?

Carbon fiber, inoumbwa nemacombos asina kufanana nezvinhu (fiber neresin), kusiyana kwadzo, uye nekudaro, kurongeka, sikweya chiyero pakati perunako rwavo. Sechitsividzo chesimbi, kabhoni fiber composites inopa kagumi simba resimbi. Vagadziri veCarbon fiber vanogadzira chigadzirwa chine masikweya chiyero chakafanana asi chisina kufanana. Carbon fiber inosiyana mutensile modulus (kana kuomarara kwakatemwa sedeformation pazasi dhizaini) uye kusimba, kumanikidza uye kuneta simba.

Taura nesu

PAN-based carbon fiber inowanikwa mazuva ano mune yakaderera modulus (isingasviki makumi matatu nemaviri emamiriyoni lbf/in² kana Msi), tsika modulus (33 kusvika makumi matatu nenhanhatu Msi), yepakati modulus (40 kusvika makumi mashanu Msi), yakakwirira modulus (50 kusvika makumi manomwe Msi) uye ultrahigh modulus zana (70 kusvika imwe).
Mumashoko akareruka, kabhoni fiber inogadzirwa nekuchinja kweassociate degree organic precursor fiber mune associate degree inert atmosphere pane tembiricha dzinopfuura 1800 ° F (982.22 ° C). Carbon fiber kugadzira, zvisinei, inogona kunge iri bhizinesi repamberi.

Polymerization uye Spinning

Polymerization

Maitiro acho anotanga nekemikari yakasanganiswa feed stock inonzi inotangira iyo ine molecular backbone ye fiber. Nhasi, inosvika zana muzana yekabhoni fiber yakagadzirwa inogadzirwa nemucheka kana pitch-based precursors, asi yakawanda yacho inobva ku polyacrylonitrile (PAN), inogadzirwa kubva ku nitrite, uye nitrite inobva muindasitiri makemikari propane uye ammonia.

Kazhinji, kuumbwa kwe precursor kunotanga neassociate degree nit rile compound iyo inosanganiswa mu reactor chaiyo ine plasticized acrylic co monomer uye catalyst se acid, dioxide, mafuta e vitriol kana asidhi. Kuenderera mberi kusanganisa kunobvumira izvo zvinongedzo kuti zvibatane, zvichiita kumwe kuenderana uye kuchena, uye kutanga kuumbwa kwemahara radicals mukati meiyo molecular chimiro che nitrite. Kugadziridzwa uku kunoguma nekemikari muitiro, iyo inobereka refu cheni mapolymers kuti mhando acrylic fibers.Details kemikari muitiro, kufanana tembiricha, mhepo, chaiwo co monomers uye catalysts, square measure proprietary. Mushure mekuwacha uye kuomeswa, iyo nitrite mumhando yehupfu inonyungudutswa mune associate degree organic solvent senge dim ethyl sulfide (DMSO), dimethylacetamide (DMAC) kana dimethylformamide (DMF), kana associate degree liquid solvent, senge atomic nhamba 30 chloride uye rhodamine munyu. Organic solvents inogonesa kudzivirira kuteedzera simbi particle kusvibiswa, izvo zvinogona kukuvadza thermal aerophilous kugadzikana kweiyo nzira uye kunonoka kupisa kuita kwefiber yakapera. Panguva ino, iyo poda uye yakanyungudika kuturika kana precursor "coating" ndiko kuwirirana kwesyrup. Kusarudzwa kwe solvent uye naizvozvo dhigirii rekutonga kwehuipi hwekuputira (kuburikidza nekudzika filtration) square measure yakakosha pakubudirira kwechikamu chinoteedzana chekugadzira fiber.
Spinning
PAN fibers square measure yakagadzirwa nenzira inonzi wet spinning. Iyo yekupfekedza inonyudzwa panguva yemvura yakasikwa process bhafu uye inoburitswa kuburikidza negomba panguva ye spinneret inogadzirwa kubva kune yakakosha. Ndima iyi inofananidzwa nemhando inodiwa yemafilaments ePAN fiber (semuenzaniso, 12,000 maburi e12K carbon fiber). Iyi inofananidzwa gobvu uye brittle wet spun fiber inodhonzwa kuburikidza ne roller kubvisa yakawandisa agent, yobva yaomeswa uye yakatambanudzwa kuti ienderere mberi nekutarisa kweiyo PAN komboni. Pano, chimiro uye chemukati chemukati-chikamu cheiyo filaments square chiyero chakatemerwa nechiyero chekuti iyo yakasarudzwa solvent uye agent inopinda mukati me precursor fibers, huwandu hwekushushikana hunoshandiswa, uye zvakare pc elongation yemafilaments. Iyo yekupedzisira ndeye muridzi kune wese mugadziri. Imwe nzira yekuruka kunyorova inogona kunge iri nzira yekusanganisa inonzi dry blasting/ wet spinning, iyo inoshandisa mhepo yakatwasuka mukaha pakati pemafiibhi uye nebhavhu remusikirwo. Izvi zvinotungamirira kune spherical spherical PAN fiber iyo inowedzera fiber / matrix rosin interface mukati memusanganiswa Nhanho yekupedzisira mukati mekugadzirwa kwePAN precursor fibers ndeyokuti kushandiswa kwemafuta ekupedzisa kumisa viscous filaments kubva pakusangana. Iyo chena PAN fibers square measure yakabva yaoma zvakare uye yakakuvara paspool.

Oxidation uye Carbonization

Oxidation

Aya ma bobbins sikweya chiyero akaiswa mudengu, uye mukati menguva refu yekugadzira, oxidization nhanho, PAN fibers square chiyero inodyiswa kuburikidza neyakatevedzana yevira yakatsaurirwa. Vasati vapinda mumudziyo wekutanga wekicheni, iyo PAN fibers square measure placate kuita tow kana sheet inonzi warp. Tembiricha yekamuri inotangira pa392 °F (ca. 200 °C) kusvika pa572 °F (300 degrees Celsius).

Kuti udzivise kusabatika kwekupisa (inofungidzirwa enthalpy unharness mukati meoxidization, inoverengeka pambiri,000 kJ / kilogiramu, fambisa Iyo ngozi yechokwadi yemoto), vagadziri vemidziyo yemukicheni vanoshandisa kupararira kwekuyerera kwemaitiro emhepo kubatsira kubvisa kupisa uye kutonga tembiricha. Inotyairwa neimwe kemikari inotangira, nguva yeoxidization yakasiyana zvachose, zvisinei Littler anofungidzira kuti iyo 24K tow ichashandurwa pamwero wemakumi mana nematatu tsoka pamamita gumi nematatu paminiti pamutsetse wekunze une akawanda oxidization mavira. Pakupedzisira, alter (yakadzikama) PAN fibers ine kubva pamazana mashanu kusvika pamakumi matanhatu neshanu mamorekuru ekabhoni ane chiyero chiri gasi, musanganiswa weatomiki nhamba 7 uye O.
Carbonization
Carbonization inoitika panguva inert (isina okisijeni) mumhepo munhevedzano yevira rakagadzirwa, nhanho nenhanho kuwedzera tembiricha. Pamuviri wemvura nekubuda kwekamuri yega yega, imba yekuvandudza inodzivirira kupinda kweO semhedzisiro yeO molecule yega yega inopfuura nemukicheni mudziyo inobvisa zvishoma zvefiber. Izvi zvinogona kudzivirira kurasikirwa kwekabhoni inogadzirwa pakupisa kwakadaro. Mukushaikwa kweO, chete asiri-kabhoni mamorekuru, pamwe chete nekomboni Uye akasiyana-siyana anopenga organic komisheni (yakadzikamiswa padanho remakumi mana kusvika makumi masere ppm) uye ma particulate (akadai sechikamu akaiswa fiber zvidimbu) anobviswa uye Anoburitswa mukicheni mudziyo wekupedzisira kurapwa muchoto chinodzorwa nenharaunda. carbonisation inotanga panguva yekamuri yetembiricha, endesa ma fiber ku1292 °F (ca. 700 °C) kusvika 1472 °F (700 °C kusvika 800 °C) uye ichipera panguva yekamuri yekupisa pa2192 °F (ca. 1,200 °C) kusvika 2732 °F (ca. 0 °C0 °C 1,5). 1500 ° C). Nhamba yemakamuri inosarudzwa ne modulus inodiwa mukati me carbon fiber; mutengo wakaenzana wepamusoro uye usina mwero wakakwira modulus kabhoni fibers unokonzerwa zvishoma nekuenderera uye tembiricha iyo inofanirwa kuwanikwa nechoto chekupisa. kunyangwe kuenderera kuri kwemuridzi uye yega kabhoni fiber giredhi yakasiyana zvachose, iyo oxidization kuenderera kunoverengerwa mumaawa, zvisinei iyo carbonisation rate inoderedzwa nekurongeka kwehukuru mumaminetsi. Kana iyo fiber yachinja mamiriro, inoderedza huremu uye vhoriyamu, inopfupisa kureba neshanu kusvika 100%, uye inoderedza dhayamita. Zvakadaro, kutendeuka kwehuwandu hwehukama hwePAN precursor kune PAN kabhoni faibha ine chekuita ne2: 1 uye zvakare kugona kwekubvisa idiki pane peya - ndiko kuti, zvakawanda zvidiki zvinhu zvinopinda mumethodhe.Iyi nzira inosanganisa O mamorekuru kubva kumhepo nePAN fibers mukati memukomboni warp uye inotanga kuyambuka-chaining yechanicha. Izvi zvichawedzera fiber density kubva ~ 1.18 g / cc kusvika kune imwe.38 g / cc.

Surface kurapwa uye saizi

Surface kurapwa uye saizi
Nhanho inotevera yakakosha pakuita kwefiber, uye nekuwedzera kune inotangira, inosiyanisa zvakanyanya chigadzirwa chemutengesi kubva kune vanokwikwidza. Iko kunamatira pakati pematrix organic compound uye naizvozvo carbon fibers inokosha pakusimbisa iyo composite; mukati meiyo kabhoni fiber yekugadzira nzira, kurapwa kwepamusoro kunoitwa kuwedzera uku kunamatira.

Nguva yekutumira: Nov-01-2018

Nzira yekuita sei carbon fiber?

KUGADZIRA SEI CARBON FIBER?

Polymerization uye Spinning

Oxidation uye Carbonization

Surface kurapwa uye saizi