nkhani

Cellulose Acetate Butyrate, yofupikitsidwa monga CAB, ili ndi formula ya mankhwala (C6H10O5) n ndi molekyulu yolemera mamiliyoni. Ndi ufa wolimba ngati chinthu chomwe chimasungunuka mu zosungunulira zina, monga acetic acid ndi acetic acid. Kusungunuka kwake kumawonjezeka ndi kutentha kwakukulu. Cellulose acetate butyrate imakhalanso ndi kukhazikika kwa kutentha ndipo siwola mosavuta kutentha kwa firiji.

Cellulose Acetate Butyrate ili ndi zinthu zabwino kwambiri monga kukana chinyezi, kukana kwa UV, kukana kuzizira, kusinthasintha, kuwonekera, komanso kutsekemera kwamagetsi, ndipo imagwirizana bwino ndi utomoni ndi mapulasitiki apamwamba otentha. Pulasitiki, magawo, mafilimu, ndi zokutira zokhala ndi zinthu zosiyanasiyana zitha kupangidwa molingana ndi zomwe zili mu butyryl. Zitha kupangidwa ndi extrusion, jekeseni akamaumba, rotary akamaumba, nkhonya akamaumba, etc., kapena ndi kuwira kupopera mbewu mankhwalawa. Kuphatikiza pa magulu a hydroxyl ndi acetyl, cellulose acetate butyrate ilinso ndi magulu a butyryl, ndipo katundu wake amagwirizana ndi zomwe zili m'magulu atatu ogwira ntchito. Malo ake osungunuka ndi mphamvu zamakokedwe zimawonjezeka ndi kuwonjezeka kwa acetyl content, ndipo kugwirizana kwake ndi plasticizers ndi kusinthasintha kwa filimuyi kumawonjezeka mkati mwamtundu wina ndi kuchepa kwa acetyl content. Kuchulukitsa kwa hydroxyl kumatha kulimbikitsa kusungunuka kwake mu zosungunulira za polar. Kuwonjezeka kwa zomwe zili m'magulu a butyryl kumabweretsa kuchepa kwa kachulukidwe komanso kufalikira kwa magawo osungunuka.

Kugwiritsa ntchito Cellulose Acetate Butyrate

Cellulose Acetate Butyrate imagwiritsidwa ntchito ngati chowongolera komanso kupanga filimu kuti ipangitse kuwonekera kwambiri komanso kukana nyengo yabwino mapulasitiki, mafilimu, ndi zokutira zosiyanasiyana. Kuwonjezeka kwa zomwe zili m'magulu a butyryl kumabweretsa kuchepa kwa kachulukidwe komanso kufalikira kwa magawo osungunuka. Muli 12% mpaka 15% magulu a acetyl ndi 26% mpaka 29% magulu a butyryl. Zinthu zowoneka bwino kapena zowoneka bwino, zokhala ndi mawonekedwe olimba komanso kukana kuzizira bwino. CAB angagwiritsidwe ntchito ngati zopangira pokonza magawo filimu, mlengalenga kujambula gawo lapansi, mafilimu woonda, etc. Itha kugwiritsidwanso ntchito monga zopangira potengera mapaipi, zida zogwirira, zingwe, zizindikiro panja, mabokosi zida, etc. Kuphatikiza apo, itha kugwiritsidwanso ntchito ngati zopangira zopangira zokutira zovunda, zokutira zotchingira, zokutira zolimbana ndi nyengo zapamwamba, ndi ulusi wochita kupanga.

Makhalidwe a cellulose acetate butyrate

Cellulose acetate butyrate ili ndi mikhalidwe yapadera yomwe imapangitsa kuti izindikirike kwambiri pamagwiritsidwe ntchito. Choyamba, ili ndi solubility yabwino komanso kutsatsa, ndipo imatha kusakanikirana ndi zida zina kuti ikwaniritse ntchito yabwino yopangira. Kachiwiri, cellulose acetate butyrate imakhala ndi mayamwidwe abwino komanso opatsa mphamvu, omwe amatha kusunga chinyezi komanso kukhazikika kwazinthuzo. Kuphatikiza apo, ilinso ndi biocompatibility yabwino ndipo sizikhala ndi zotsatirapo zoyipa mthupi la munthu kapena chilengedwe.

Malangizo ogwiritsira ntchito cellulose acetate butyrate

Mukamagwiritsa ntchito cellulose acetate butyrate, pali malingaliro ndi njira zodzitetezera zomwe zingathandize kugwiritsa ntchito bwino ntchito yake. Choyamba, cellulose acetate butyrate iyenera kuumitsidwa musanagwiritse ntchito kuti ikhale yosungunuka komanso yokhazikika. Kachiwiri, pakukonza, kutentha kwambiri ndi acidic zinthu ziyenera kupewedwa kuti zipewe kuwonongeka ndi kuwonongeka kwa cellulose. Kuonjezera apo, malamulo ndi malamulo oyenerera ayenera kutsatiridwa panthawi yogwiritsidwa ntchito kuti atsimikizire kutsatiridwa ndi chitetezo cha zipangizo.

Momwe mungaweruzire mtundu wa cellulose acetate butyrate

Ubwino wa cellulose acetate butyrate ukhoza kuweruzidwa kuchokera kuzinthu zotsatirazi. Choyamba, zitha kuzindikirika poyang'ana ngati mawonekedwe ake ndi owuma komanso opanda zodetsa zowonekera. Kachiwiri, kusungunuka kwake ndi kukhazikika kwake kumatha kuyesedwa, ndipo mtundu wapamwamba wa cellulose acetate butyrate uyenera kukhala ndi kusungunuka kwabwino komanso kukhazikika kwamafuta. Kuphatikiza apo, ndizothekanso kunena za mbiri ndi ziphaso za ogulitsa ndikusankha ogulitsa odziwika komanso oyenerera kuti atsimikizire mtundu wa malonda ndi kudalirika.

Makampani a Unilong adadzipereka pa kafukufuku wama cellulose esters ndipo ndiwopereka padziko lonse lapansi zinthu za CAB ndi CAP. Itha kupanga matani 4000 a cellulose acetate propionate (CAP) ndi mapadi acetate butyrate (CAB) pachaka, ndipo amagwiritsidwa ntchito kwambiri pokonza zinthu zogulitsa kunja monga zokutira, ma CD a chakudya, zoseweretsa za ana, zida zamankhwala, ndi zina zambiri.