Chii chinonzi carbon fiber?

Yakachekwa kabhoni faibha kabhoni faibha inodimburirwa. Pano kabhoni fiber inongova morphological shanduko, kubva ku carbon fiber filament kusvika muchidimbu filament, asi kushanda kwekapfupi-cut carbon fiber pachayo hakuna kuchinja. Saka sei iwe uchida kucheka yakanaka filament pfupi?
Chekutanga pane zvese, isu tinofanirwa kutanga kubva pakuumbwa kweiyo composite zvinhu. Kazhinji kabhoni faibha filament inofanira kurukwa kuita kabhoni faibha jira kana kuitwa kabhoni faibha prepreg, uyezve kuburikidzakuumba maitiro, RTM, vacuum bagging, hot press makeni uye mamwe maitiromune zvakasiyana-siyana zvekabhoni fiber composite zvigadzirwa. Ehezve, kune zvakare mamwe maitiro ekuumba ayo asingade zvepakati zvinhu, zvakananga kuburikidza nekabhoni fiber filament yekuumba, senge pultrusion molding, mhepo yekuumba uye zvichingodaro.
Kabhoni faibha yakarukwa kuita kabhoni faibha jira kana kugadzirwa prepreg, enda unogadzira zvigadzirwa, pane hunhu husina kunaka, hazvina kunaka kunamatira mold. Kuvepo kwechiumbwa ndechekupa chimiro kune chinoumbwa zvinhu, mold ine chimiro cherudzii, iyo yekupedzisira inoumbwa zvinhu inewo rudzii rwechimiro. Nekudaro, kana iyo kabhoni fiber jira kana prepreg isingakodzeri mold zvakanaka, chimiro chechinhu chinoumbwa hachienderane nechimiro cheforoma. Uye zvakare, mune mamwe makona, iyo kabhoni fiber jira iri nyore kubhuroka, ichigadzira mhango yemunharaunda, iyo inozopedzisira yakonzera kuderera kwekuita kwekabhoni fiber composite zvigadzirwa.
Iyo carbon fiber filament mukati me carbon fiber cloth kana prepreg inosungwa uye haisi nyore kufamba. Kunyanya panyaya yekumanikidza, iyo resin uye kabhoni fiber filament mobility yakashata zvakanyanya, izvo zvinozopedzisira zvakonzera kuumba kuoma kana kuderera kwekuita.
Iyo ipfupi kureba, zviri nani iyo fluidity yeyakachekwa kabhoni fiber. Izvo zvinofanirwa kuzivikanwa kuti jekiseni kuumba ndiyo inonyanya kushandiswa uye yakakura tekinoroji mukugadzira mapurasitiki maitiro. Kana ikashandiswa pakugadzirwa kwezvinhu zvakasanganiswa, ichava shanduko huru.
Zvisinei, kureba kwekabhoni kabhoni kapfupi hakugone kuderedzwa, nekuti iyo ipfupi kureba kwekapfupi-yakatemwa kabhoni fiber, iyo resin uye kabhoni fiber bonding ichave isina kusimba. Nekuti chisungo pakati pe resin uye kabhoni fiber yakanyatso kuenzana nenzvimbo yekubatana pakati pavo, kana kureba kwakapfupikiswa, ipapo nzvimbo yekubata inoderedzwa.
Zvadaro pane kupesana pano, ndiko kuti, kupesana pakati pekushanda kwefiber-cut-cut fiber uye kufamba. Iyo yakareba iyo fiber kureba, iyo isinganyanyi kupararira, faibha uye faibha zviri nyore kupfundora, asi iyo yakasimba iyo fiber uye resin musanganiswa, kunze kweiyo composite zvinhu kuita kuchave kwakakwira. Iyo ipfupi yehurefu hwefiber, zviri nyore kuparadzira, nekuyerera kwakanaka, asi iyo fiber uye resin bond ishoma shoma. Nzira yekuenzanisa sei kupokana uku, inoda kuongororwa, kazhinji, kuita pfupi-cut carbon fiber yakasimbiswa pellets epurasitiki, kureba kwe1-9mm.
Kune zvakare nzira yekusimudzira simba rekubatanidza pakati pekabhoni fiber uye resin, iri saizi mumiririri. Kazhinji, pane saizi mumiriri pamusoro peiyocarbon fiberfekitori, iyo inoshandiswa kuchengetedza kabhoni faibha kubva pakusungirira mukugadzira, kuendesa uye kushanda, uye kune rumwe rutivi, inoshandiswa kubatanidza kabhoni fiber uye resin, uye kuita basa rekusimudzira simba rekubatanidza.
Nekudaro, iyi saizi mumiriri ndeye thermosetting resin. Mazhinji resin anoshandiswa kugadzira pellets ndeye thermoplastic resins, saka saizi mumiriri inofanirwa kugadziridzwa. Imwe ndeyekupisa iyo yekutanga saizi mumiriri uye kugadzira dhizaini nyowani ye saizi agent. Imwe ndeyekupisa iyo yekutanga saizi mumiriri uye kugadzira dhizaini nyowani ye saizi agent; imwe yacho ndeyekuita saizi mumiriri zvakare pahwaro hweiyo yekutanga saizi mumiriri, inonzi yechipiri saizi.
Pamusoro pekugadzira magranules ekuumba jekiseni,yakachekwa kabhoni fiberine mamwe mashandisirwo, seyakagadzirwa necarbon fiber mat, kana yakagadzirwa nekabhoni fiber bepa. Hurefu hunodiwa hwekabhoni fiber yakachekwa huchareba kupfuura urefu hwefiber yakachekwa yemagranules.
Pamusoro pezvo, pamusoro pekabhoni yakachekwa zvisina tsarukano, kune zvakare mabundled akachekwa kabhoni fibers. Iyi faibha pfupi-yekudimburira iri muchidimbu pamberi pekabhoni faibha tow yeimwe mhando yakafanotemerwa, wozochekwa kunze kweiyo pfupi-cut fiber ine hunhu hwebundle, ine huwandu hweresin ichave yakawanda kupfuura mamwe mapfupi-cut fiber.