Machubhu akareruka efiber e optical ndiwo akakosha anodzivirira fiber kubva mukumanikidzwa kwekunze uye anovimbisa kushanda kwakasimba kwekutumira. Kusarudzwa kwezvinhu kunosarudza zvakananga kuvimbika kwemuchina uye hupenyu hwebasa retambo dze optical.
Nei PBT Ichikosheswa?
Polybutylene terephthalate (PBT)ine modulus yakajairika ye elastic inosvika 2–3 GPa, yakakwira kupfuura iyo yePA12 (polyamide 12), inova inenge 1.2–1.8 GPa. Izvi zvinoreva kuti deformation yakaderera pasi pemutoro mumwe chete uye kuramba kuri nani kudzvinyirirwa kwe lateral.
Kuwanda kwayo kwekuwedzera kwekupisa kwakabatana kunenge (6–10) × 10⁻⁵ /°C, zvichipa kugadzikana kwakanaka kwazvo, izvo zvinobatsira kudzora kureba kwefiber yakawandisa uye zvinoderedza njodzi dzekukombama kwe microbend pasi pekuchinja kwetembiricha.
Pamusoro pezvo, kunyudzwa kwemvura shoma, kuramba makemikari zvakanaka, uye mutengo uri pakati nepakati zvinoita kuti PBT ive imwe yezvinhu zvinonyanya kushandiswa pakushandisa machubhu akasununguka.
Zvinofanira kucherechedzwa kuti PBT ipolymer yakaita semi-crystalline, uye crystallinity yayo inoenderana zvakanyanya nemamiriro ekugadzirisa extrusion. Kudzora maitiro kwakakodzera kwakakosha kuti pave nekushanda kwakasimba.
MaParamende Matatu Akakosha Ekudzora
Kugadzikana kwekushanda kwemachubhu akasununguka kunoenderana nekudzora kwakasimba kwezvikamu zvitatu zvakakosha, chimwe nechimwe chichikanganisa zvakananga mashandiro etambo kwenguva refu:
Nhamba Yekuyerera Kwemvura Yakanyunguduka (MFI):
Inoratidza kuyerera kwemvura kubva muchubhu. Kune PBT yakasunungurudzwa, inowanzo dzorwa pa7.0–15.0 g/10 min. Inofanira kunge yakanyatsoenderana nemichina yekugadzirisa; zvikasadaro, kunaka kwekugadzirwa kwechubhu kunogona kukanganiswa.
Kuderera kwesimba:
Maitiro ekuderera kwekupisa anokanganisa kupararira kwehurefu hwefiber mukati mechubhu, izvo zvinozokanganisa kurasikirwa kwe microbending uye kushanda kwetembiricha yakaderera. Chinhu chakakosha pakutumira optical kwakasimba.
Kuramba Kukwegura Nemvura Inopisa:
Mabhondi eEster muPBT molecular chains anogona kukanganiswa nehydrolysis kana tembiricha yakakwira uye hunyoro hwakawanda, zvichikonzera kudzikira kwekushanda. Kukurumidza kukwegura uchishandisa bvunzo dzemidziyo yepressure, kuongorora viscosity yemukati uye kuchengetedza hunyanzvi hwemakanika, kunowanzo shandiswa kuongorora kuvimbika kwenguva refu. Ichi ndicho chimwe chezvikonzero nei PBT ichishandiswa zvakanyanya mutambo dzeoptical dzepasi pevhu uye dzakaoma.
Zvimwe Zvinhu uye Kugadziriswa kweZvishandiso Zvakakosha
Hazvisi zvese zvinoshandiswa zvakakodzera PBT chaiyo. Zvichienderana nezvinodiwa nezvakatipoteredza, zvimwe zvinhu zvinoshandiswa uye matekinoroji ekugadzirisa anoshandiswa sekuwedzera:
PP (Polypropylene):
PP inopa simba riri nani rekudzivirira hydrolysis uye kugona kwayo kuchinjika. Zvisinei, nekuda kwekusagadzikana kwayo, kuenderana kwayo nemakemikari anozadza kunoenderana nemasisitimu chaiwo ekugadzira uye kunofanirwa kuongororwa nokungwarira.
PA12 (Polyamide 12):
PA12 yakashandiswa mumagadzirirwo emachubhu ekutanga asina kusimba, asi nekuda kwekusasimba kwayo uye kudhura kwayo kwakakwira, yakanyanya kutsiviwa mumashandisirwo akajairika. Iye zvino inonyanya kushandiswa mumashandisirwo akakosha anoda kuchinjika kwakanyanya.
Maitiro Ekugadzirisa:
Kuvandudzwa kunowanzoitika mukushanda kwekudzivirira kukotama kunobva mukubatanidza PBT neTPEE (Thermoplastic Polyester Elastomer). Maumbirwo echikamu chakaoma/chakapfava anovandudza kuramba kukotama kunogara kuchienderera mberi, achizadzisa zvinodiwa zvekubatanidza tambo uye dynamic routing.
Pamusoro pezvo, masisitimu ekusanganisa PET/PBT ari kuongororwawo kuti aenzanise mashandiro uye mutengo.
Zvinodiwa Zvikuru Pakushanda Kwemakomputa Ekuzadza (Cable Jelly)
Musanganiswa wekuzadza uri mukati mechubhu inzvimbo yakakosha yekudzivirira fiber dzemaziso, uye mashandiro ayo anonyanya kuongororwa nezvinotevera:
Thixotropy:
Inoita semvura ine viscosity shoma kana yave kuchekwa kuti izadzwe zviri nyore, uye inozokurumidza kudzoka kuchimiro chegel kana yakamira, ichipa cushion kwenguva refu uye dziviriro yemakanika kune fibers.
Kushanduka kweHydrogen (Nhanho yeKugadzirwa kweHydrogen):
Kupinda kwehydrogen mu optical fibers kunowedzera kurasikirwa nekufambiswa kweropa. Nokudaro, makemikari anozadza anofanira kuratidza kugadzirwa kwehydrogen kwakaderera. Zvigadzirwa zvepamusoro zvinogona kusanganisira hydrogen scavengers kuti zvideredze njodzi.
Kuchena uye Kuenderana:
Musanganiswa wacho unofanirwa kunge wakafanana, usina tsvina uye mabubble emhepo, uye unoenderana nemakemikari nefiber coating nezvinhu zvemachubhu kudzivirira kuora kana migumisiro yekubatana.
Kubva pakudzora PBT kuita kristalllization, kusvika pakugadzirisa matekinoroji ekugadzirisa, uye pakupedzisira kusvika pakuzadza mashandiro ecompound, nhanho imwe neimwe inofanira kudzorwa nemazvo kuti ive nechokwadi chekuti optical transmission yakagadzikana kwenguva refu uye kupa hwaro hwakavimbika hwenetwork dzekutaurirana.
Nguva yekutumira: Chivabvu-28-2026