Shiri tsari na carbon fiber hada kayan

Bayanin Abubuwan Haɗaɗɗen Carbon-Carbon

Carbon/carbon (C/C) kayan hadewani abu ne mai ƙarfi na fiber carbon wanda aka haɗa tare da jerin kyawawan kaddarorin kamar babban ƙarfi da modulus, ƙayyadaddun nauyi mai haske, ƙaramin haɓakar haɓakar thermal, juriya na lalata, juriyar girgiza zafin zafi, juriya mai kyau, da ingantaccen ingantaccen sinadarai. Wani sabon nau'in kayan haɗaɗɗun zafin jiki ne.

C/C hada kayankyakkyawan tsari ne na thermal-aikin hadedde kayan aikin injiniya. Kamar sauran kayan aiki masu mahimmanci, tsari ne mai mahimmanci wanda ya ƙunshi wani lokaci mai ƙarfafa fiber da kuma lokaci na asali. Bambanci shi ne cewa duka matakan ƙarfafawa da na asali sun ƙunshi carbon mai tsabta tare da kaddarorin musamman.

Carbon/carbon hada kayanAn fi yin su da carbon ji, carbon zane, carbon fiber matsayin ƙarfafawa, da tururi ajiya carbon a matsayin matrix, amma shi ne kawai da kashi daya, wanda shi ne carbon. Domin ƙara yawa, iskar carbon da aka samar ta carbonization ana shigar da shi da carbon ko kuma an haɗa shi da guduro (ko kwalta), wato, carbon/carbon composite kayan ana yin su da kayan carbon guda uku.

Tsarin masana'anta na kayan haɗin gwiwar carbon-carbon

1) Zaɓin fiber carbon

Zaɓin nau'in fiber na carbon fiber da tsarin ƙirar fiber yadudduka sune tushen masana'antaC/C hadawa. Za'a iya ƙayyade kaddarorin injiniyoyi da kaddarorin thermophysical na abubuwan haɗin C / C ta hanyar zabar nau'ikan fiber da ma'aunin saƙar masana'anta, kamar daidaitawar tsarin dam ɗin yarn, tazara dam ɗin yarn, abun ciki na ƙarar yarn, da sauransu.

2) Shiri na carbon fiber preform

Carbon fiber preform yana nufin wani fanko wanda aka samar a cikin tsarin tsarin da ake buƙata na fiber bisa ga sifar samfur da buƙatun aiki don aiwatar da aikin haɓakawa. Akwai manyan hanyoyin sarrafawa guda uku don ɓangarorin da aka riga aka tsara: saƙa mai laushi, saƙa mai wuya da laushi da gauraye. Babban tsarin aikin saƙa shine: busasshen zaren saƙar, tsarin ƙungiyar sanda da aka riga aka yi ciki, huda mai kyau, iska mai fiber da kuma saƙa gabaɗaya mai nau'i-nau'i uku. A halin yanzu, babban aikin saƙa da ake amfani da shi a cikin kayan haɗin gwiwar C shine gabaɗayan saƙa mai nau'i-nau'i da yawa. Yayin aikin saƙa, ana shirya duk zaren da aka saka a wata hanya. Kowane fiber yana kashe shi a wani kusurwa tare da hanyarsa kuma an haɗa shi da juna don samar da masana'anta. Halinsa shi ne cewa zai iya samar da masana'anta gabaɗaya masu girma dabam-dabam masu girma dabam-dabam masu girma dabam-dabam, wanda zai iya sarrafa girman abun ciki na zaruruwa yadda ya kamata a cikin kowane shugabanci na kayan haɗin C / C, ta yadda kayan haɗin C / C na iya aiwatar da kaddarorin injiniyoyi masu ma'ana. ta kowane bangare.

3) Tsarin densification C / C

Matsayin digiri da inganci na densification sun fi shafar tsarin masana'anta da sigogin tsari na kayan tushe. Hanyoyin tsarin da ake amfani da su a halin yanzu sun hada da carbonization impregnation, sunadarai tururi ajiya (CVD), sunadarai tururi infiltration (CVI), sinadaran ruwa jijiya, pyrolysis da sauran hanyoyin. Akwai manyan nau'ikan hanyoyin aiwatarwa guda biyu: aiwatar da tsarin carbonization impregnation da tsarin shigar da tururi na sinadarai.

Ruwa lokaci impregnation-carbonization

Hanyar impregnation lokaci mai ruwa abu ne mai sauƙi a cikin kayan aiki kuma yana da fa'ida mai fa'ida, don haka hanyar shigar da ruwa lokaci hanya ce mai mahimmanci don shirya kayan haɗin C/C. Shi ne a nutsar da preform da aka yi da carbon fiber a cikin ruwa impregnant, da kuma sanya impregnant cikakken shiga cikin vads na preform ta hanyar pressurization, sa'an nan ta hanyar jerin matakai kamar curing, carbonization, da graphitization, a karshe samu.C/C hada kayan. Rashin hasara shi ne cewa yana ɗaukar maimaitawar impregnation da hawan carbonization don cimma buƙatun yawa. Abun da ke ciki da tsarin abin da ke ciki a cikin hanyar zubar da ruwa na ruwa yana da matukar muhimmanci. Ba wai kawai yana rinjayar ƙimar haɓakawa ba, amma har ma yana rinjayar kayan aikin injiniya da na jiki na samfurin. Inganta yawan amfanin ƙasa carbonization na impregnant da rage danko na impregnant kasance ko da yaushe daya daga cikin key al'amurran da suka shafi da za a warware a cikin shirye-shiryen na C / C hada kayan ta ruwa lokaci impregnation Hanyar. Babban danko da ƙarancin iskar carbonization na abin da ke ciki shine ɗayan mahimman dalilai na tsadar kayan haɗin C/C. Haɓaka aikin mai haɓakawa ba zai iya haɓaka haɓakar haɓakar kayan haɗin gwiwar C / C da rage farashin su ba, har ma da haɓaka nau'ikan kaddarorin C / C. Maganin anti-oxidation na kayan haɗin C/C Fiber Carbon ya fara yin iskar oxygen a 360 ° C a cikin iska. Fiber ɗin graphite ya ɗan fi na carbon fiber, kuma zafinsa na iskar shaka ya fara oxidize a 420 ° C. Matsakaicin oxidation na kayan haɗin gwiwar C/C shine kusan 450 ° C. C / C kayan haɗakarwa suna da sauƙin sauƙaƙe a cikin yanayi mai zafi mai zafi, kuma adadin iskar oxygen yana ƙaruwa da sauri tare da karuwar zafin jiki. Idan babu matakan anti-oxidation, yin amfani da dogon lokaci na kayan haɗin gwiwar C/C a cikin yanayin zafi mai zafi zai haifar da mummunan sakamako. Saboda haka, maganin anti-oxidation na kayan haɗin gwiwar C/C ya zama wani ɓangaren da ba dole ba ne a cikin tsarin shirye-shiryensa. Daga hangen nesa na fasahar anti-oxidation, ana iya raba shi zuwa fasahar anti-oxidation na ciki da kuma fasahar rufewa.

Matsayin Turin Sinadari

Tushen tururi na sinadarai (CVD ko CVI) shine saka carbon kai tsaye a cikin ramukan da ba komai don cimma manufar cika ramukan da ƙara yawa. Carbon da aka ajiye yana da sauƙin graphitize, kuma yana da kyakkyawar dacewa ta jiki tare da fiber. Ba zai ragu ba yayin sake-carbonization kamar hanyar impregnation, kuma kayan aikin jiki da na injiniya na wannan hanyar sun fi kyau. Duk da haka, a lokacin aikin CVD, idan an ajiye carbon a saman sararin samaniya, zai hana iskar gas daga yadawa cikin pores na ciki. Carbon da aka ajiye a saman ya kamata a cire shi da injina sannan a yi sabon zagaye na ajiya. Don samfurori masu kauri, hanyar CVD kuma tana da wasu matsaloli, kuma sake zagayowar wannan hanyar yana da tsayi sosai.