Waxyaabaha saameeya barta karkarinta ee tetrahydrofuran iyo codsiyada la taaban karo
Tetrahydrofuran (THF) waa dareere dabiici ah oo si ballaaran loo isticmaalo warshadaha kiimikada leh dareere sare iyo sunta hoose, sidaas darteed si ballaaran ayaa loo isticmaalay dhinacyada daawooyinka, kiimikooyinka iyo sayniska alaabta. Warqadan, waxaan si qoto dheer uga wada hadli doonaa sifooyinka aasaasiga ah ee barta karkarinta tetrahydrofuran, arrimaha saameeya iyo muhiimada ay u leedahay codsiyada la taaban karo.
I. Tilmaamaha aasaasiga ah ee tetrahydrofuran iyo barta karkarinta
Tetrahydrofuran (THF) waa eter wareeg ah oo leh qaacidada kiimikada C4H8O. Sida dareeraha caadiga ah ee la isticmaalo, tetrahydrofuran waa dareere aan midab lahayn oo hufan heerkulka qolka oo leh isbeddel sare. Tetrahydrofuran waxay leedahay barta karkarinta ee qiyaastii 66°C (qiyaastii 339 K), taas oo sahlaysa in uumibaxo oo ay ka soo kabsato habab kiimikaad badan. Meesha karkarinta hoose ee Tetrahydrofuran waxay sidoo kale ka dhigan tahay in si dhakhso ah looga saari karo nidaamka falcelinta, yaraynta faragelinta falcelinta dambe.
Waxyaabaha saameeya barta karkarinta ee tetrahydrofuran
Inkasta oo barta karkaraya ee tetrahydrofuran ay qiimo go'an ku leedahay suugaanta kiimikada, ficil ahaan barta karkarinta tetrahydrofuran waxaa saameyn kara dhowr arrimood:
Saamaynta cadaadiska agagaaraha: barta karkaraya ee tetrahydrofuran way ku kala duwan tahay cadaadiska deegaanka. Cadaadiska jawiga caadiga ah, barta karkaraya ee tetrahydrofuran waa 66 ° C. Cadaadis sare ama hooseeyo, barta karkarinta ayaa si habboon u beddeli doonta. Guud ahaan, cadaadiska sarreeya, ayaa sarreeya barta karkarinta ee tetrahydrofuran; Taa beddelkeeda, meel bannaan, barta karkarinta ayaa yaraan doonta.

Saamaynta nadiifinta: Wasakhyada ku jira tetrahydrofuran waxay saameyn ku yeelan doonaan barta karkarinta. Haddii xalka tetrahydrofuran uu ka kooban yahay xaddi badan oo biyo ah ama wasakh kale oo dareere ah, barta karkaraya waxay ka duwanaan kartaa tan tetrahydrofuran saafi ah. Gaar ahaan, joogitaanka qoyaanka, oo wax yar ku milma biyaha, waxay samayn kartaa azeotrope leh THF, taasoo keentay isbeddel yar oo ku yimaada barta karkaraya.

Ifafaalaha Azeotropic: Ficil ahaan, tetrahydrofuran waxaa badanaa lagu qasaa dareerayaasha kale si ay u sameeyaan isku-dhafka azeotropic. Dhibcaha karkaraya ee isku dhafka noocan oo kale ah ayaa inta badan ka duwan kuwa ka kooban hal qaybood oo azeotropy ayaa adkeynaya habka kala-soocidda. Sidaa darteed, markaad dooranayso tetrahydrofuran sida dareeraha, waxaa muhiim ah in la fahmo dabeecadeeda azeotropic ee xeryahooda kale.

III. Codsiyada la taaban karo ee barta karkarinta tetrahydrofuran ee warshadaha
Tilmaamaha barta karkarinta ee tetrahydrofuran waxay leeyihiin codsiyo muhiim u ah soosaarka kiimikada:
Soo kabashada iyo dib-u-isticmaalka dareerayaasha: Maadaama tetrahydrofuran ay leedahay barta karkarinta hoose, way fududahay in laga soo kabsado isku dhafka fal-celinta iyadoo la isticmaalayo foorno ama farsamooyin kale oo kala soocid. Hantidani kaliya ma caawinayso in la yareeyo kharashka wax soo saarka, laakiin sidoo kale waxay yaraynaysaa saameynta deegaanka.

Codsiyada ku jira polymerisation: Qaar ka mid ah falcelinta polymerisation, tetrahydrofuran waxay leedahay barta karkarinta dhexdhexaadka ah, taas oo u oggolaanaysa inay si wax ku ool ah u xakamayso heerkulka falcelinta oo hubiso in falcelintu si habsami leh u socoto. Isbeddelkeeda sidoo kale si dhakhso ah ayaa looga saari karaa dhammaadka falcelinta, ka hortagga saameynta xun ee nadiifnimada alaabta.

Codsiga ku jira isku-darka daroogada: Tetrahydrofuran waxaa badanaa loo isticmaalaa sida dareeraha habka isku-darka daroogada, barta karkaraya waa dhexdhexaad, taas oo ku habboon xakamaynta saxda ah ee xaaladaha falcelinta. Sifooyinka uumiga degdega ah ee Tetrahydrofuran ayaa ka dhigaya mid aad waxtar ugu leh go'doominta falcelinta kadib iyo hababka nadiifinta.

Gabagabo
Barta karkarinta ee tetrahydrofuran waa mid ka mid ah sifooyinka ugu muhiimsan ee codsiyada warshadaha. Fahamka barta karkarinta ee tetrahydrofuran iyo qodobbada saameynaya waxay ka caawin karaan shirkadaha kiimikada inay si fiican u xakameeyaan xaaladaha falcelinta ee wax soo saarka dhabta ah iyo hagaajinta tayada iyo wax soo saarka wax soo saarka. Isticmaalka macquulka ah ee sifooyinkeeda barta karkarinta hoose waxay caawin kartaa in la gaaro dib u warshadaynta kheyraadka iyo horumarka waara ee deegaanka. Marka la dooranayo oo loo isticmaalo tetrahydrofuran sida dareeraha, tixgalinta buuxda ee sifooyinkeeda karkarinta iyo arrimaha saameeya ayaa fure u ah hubinta badbaadada iyo hufnaanta hababka kiimikada.