Hydroxypropyl cellulose (HPC) waa polymer si weyn looga isticmaalo warshado kala duwan, oo ay ku jiraan dawooyinka, waxyaalaha la isku qurxiyo, iyo alaabta daryeelka shakhsi ahaaneed.Waxaa caadi ahaan loo shaqeeyaa sidii wakiil dhumuc, xasiliye, filim hore, iyo wax ka beddelka viscosity sababtoo ah sifooyinkeeda gaarka ah.Si kastaba ha ahaatee, marka laga hadlayo dareeraha HPC, waxaa muhiim ah in la ogaado in sifooyinkeeda milmayni ay ku xiran yihiin arrimo ay ka mid yihiin heerka beddelka (DS), miisaanka unugyada, iyo nidaamka dareeraha ee la shaqeeyo.Aynu si qoto dheer u guda galno sifooyinka HPC, habdhaqankeeda milmay, iyo dareerayaasha kala duwan ee loo isticmaalo.
Hordhaca Hydroxypropyl Cellulose (HPC):
Hydroxypropyl cellulose waa nooc ka soo jeeda cellulose, halkaas oo kooxaha hydroxypropyl lagu beddelo laf dhabarta cellulose.Wax ka beddelkaani wuxuu wax ka beddelaa sifooyinkiisa, taasoo ka dhigaysa mid ku milmi kara dareerayaasha qaarkood marka loo eego cellulose-ka asalka ah.Heerka beddelka ayaa saameeya milanka, oo leh DS sare taas oo keentay in la hagaajiyo milanka dareerayaasha aan polarka ahayn.
Astaamaha Solubility:
Solubility HPC way kala duwan tahay iyadoo ku xidhan nidaamka dareeraha, heerkulka, heerka beddelka, iyo miisaanka kelli.Guud ahaan, HPC waxay muujisaa milmi wanaagsan labadaba dareerayaasha polar iyo non-polar.Hoos waxaa ku yaal qaar ka mid ah dareerayaasha sida caadiga ah loo isticmaalo kala dirida HPC:
Biyaha: HPC waxay muujisaa milmi xaddidan ee biyaha sababtoo ah dabeecadda hydrophobic.Si kastaba ha ahaatee, darajooyinka viscosity hoose ee HPC ee leh qiimayaasha DS hoose waxay si diyaar ah ugu milmi karaan biyo qabow, halka darajooyinka DS ee sare ay u baahan karaan heerkul sare si loo milmo.
Aalkolada: Khamriga sida ethanol iyo isopropanol ayaa inta badan loo isticmaalaa dareerayaasha HPC.Waxay yihiin dareerayaasha polar waxayna si wax ku ool ah u milmi karaan HPC, iyaga oo ka dhigaya kuwo ku habboon codsiyada kala duwan.
Xalalka Chlorinated: Xalalka sida chloroform iyo dichloromethane ayaa wax ku ool u ah milminta HPC sababtoo ah awoodda ay u leeyihiin inay carqaladeeyaan isku xidhka hydrogen ee silsiladaha polymer.
Ketones: Ketones sida acetone iyo methyl ethyl ketone (MEK) ayaa sidoo kale loo isticmaalaa kala dirida HPC.Waxay bixiyaan milmayn wanaagsan waxaana inta badan lagu shaqeeyaa qaabaynta dahaarka iyo xabagta.
Esters: Esters sida ethyl acetate iyo butyl acetate waxay u milmi karaan HPC si wax ku ool ah, iyagoo siinaya dheelitirnaan wanaagsan oo u dhexeeya milanka iyo isbeddelka.
Hydrocarbons caraf udgoon: Walxaha caraf udgoon sida toluene iyo xylene waxaa loo isticmaalaa in lagu baabiiyo HPC, gaar ahaan codsiyada halka milanka sare loo baahan yahay.
Glycols: Glycol ethers sida ethylene glycol monobutyl ether (EGBE) iyo propylene glycol monomethyl ether acetate (PGMEA) waxay milmi karaan HPC waxaana inta badan loo isticmaalaa dareerayaasha kale si loo hagaajiyo viscosity iyo sifooyinka qalajinta.
Waxyaalaha Saamayn Ku Yeelan Karta:
Darajada Beddelka (DS): Qiimaha sare ee DS wuxuu caadi ahaan kor u qaadaa milanka maadaama ay kordhiyaan dareeraha polymerka.
Miisaanka Molecular: Heerarka HPC ee miisaanka unugyadu waxay u muuqdaan inay si diyaar ah u milmaan marka la barbar dhigo darajooyinka miisaanka unugyada unugyada sare.
Heerkulka: Heerkulka sare wuxuu wanaajin karaa milanka HPC, gaar ahaan biyaha iyo dareerayaasha kale ee polar.
Codsiyada:
Daawooyinka: HPC waxa loo isticmaalaa habaynta dawooyinka sida xidhe, kala daadsan, iyo wakiilka sii-deynta joogtada ah.
Alaabooyinka Daryeelka Shakhsi ahaaneed: Waxaa laga shaqeeyaa alaabooyinka daryeelka shakhsi ahaaneed ee kala duwan sida shaambooyinka, looshannada, iyo kiriimyada sidii dhumuc iyo xasiliye.
Dahaarka Wershadaha: HPC waxaa loo isticmaalaa qaabaynta dahaarka si loo xakameeyo viscosity loona wanaajiyo samaynta filimada.
Warshadaha cuntada: Warshadaha cuntada, HPC waxa loo isticmaalaa sidii wakiilka dhumuc iyo xasilinta ee alaabta sida suugada iyo dhaymada.
Hydroxypropyl cellulose waa polymer isku dhafan oo leh codsiyo kala duwan.Sifooyinkeeda milanka ayaa ka dhigaya mid la jaan qaadaya nidaamyada dareeraha kala duwan, taasoo awood u siinaya isticmaalkeeda warshado kala duwan.Fahamka habdhaqanka milanka ee HPC ayaa muhiim u ah samaynta alaabada hufan iyo wanaajinta xaaladaha habaynta.Adiga oo dooranaya dareeraha ku habboon oo tixgelinaya arrimo ay ka mid yihiin DS iyo miisaanka kelli, wax-soo-saarayaashu waxay si wax ku ool ah uga faa'iideysan karaan HPC si ay u gaaraan waxqabadka badeecada la doonayo.
Waqtiga boostada: Mar-26-2024