Indlela yokulondoloza kunye nokubona i-viscosity ye-hydroxypropyl methylcellulose?

I-viscosity ebonakalayo yisalathisi esibalulekileyo se-hydroxypropyl methylcellulose, iindlela zokulinganisa ezisetyenziswa ngokuqhelekileyo ziquka i-viscometry ejikelezayo, i-capillary viscometry kunye ne-drop viscometry.

IHydroxypropyl methylcellulose ngaphambili yayilinganiswe kusetyenziswa i-capillary viscometry kusetyenziswa i-viscometer ye-Ubbelohde. Ngokuqhelekileyo isisombululo somlinganiselo sisisombululo samanzi se-2, ifomula yile: V = Kdt. I-V imele i-viscosity, i-K yinto engaguqukiyo ye-viscometer, i-d imele ukuxinana kwiqondo lokushisa elingaguqukiyo, t ibhekisela kwixesha ukusuka phezulu ukuya ezantsi kwe-viscometer, iyunithi yesibini, le ndlela inzima ukuyisebenzisa kwaye kulula ukubangela okungalunganga, kwaye kunzima ukwahlula umgangatho we-hydroxypropyl methylcellulose.

Ingxaki ye-delamination yeglue yokwakha yingxaki enkulu edibana nabathengi. Okokuqala, ingxaki yezinto eziluhlaza kufuneka ithathelwe ingqalelo kuluhlu lweglue yokwakha. Isizathu esona sizathu sokwakhiwa kweglue layer kukuba i-polyvinyl alcohol (PVA) kunye ne-hydroxypropyl methylcellulose (HPMC) ayihambelani. Isizathu sesibini kukuba ixesha lokuvuselela alanele, kwaye ukusebenza kokuqina kweglue yokwakha akulungile.

I-hydroxypropyl methylcellulose (HPMC) yokwenziwa kwangoku kufuneka isetyenziswe kwiglue yokwakha, kuba i-hydroxypropyl methylcellulose (HPMC) isasazwe emanzini kwaye ayinakunyibilika ngokwenene, kwaye i-viscosity yolwelo iyanda ngokuthe ngcembe malunga nemizuzu emi-2, yenze i-Transparent viscous colloid. .

Xa iimveliso ezitshisayo ezincibilikayo zixutywe kunye emanzini abandayo, ziya kusasazeka ngokukhawuleza emanzini ashushu kwaye ziphele emanzini ashushu. Xa ubushushu buhla kwiqondo elithile lobushushu, i-viscosity iya kubonakala ngokukhawuleza de i-viscous colloid ecacileyo yenziwe. I-Hydroxypropyl kwi-adhesive yokwakha Idosi ecetyiswayo ye-HPMC yi-2-4kg.

I-Hydroxypropyl methylcellulose (HPMC) ineempawu ezizinzileyo zeekhemikhali, ukuxhathisa i-mildew kunye nokugcinwa kakuhle kwamanzi kwi-adhesives yokwakha, kwaye ayichaphazeli utshintsho lwe-pH. Ingasetyenziswa ukusuka kwi-100,000 ukuya kwi-200,000 S, kodwa i-viscosity ephezulu kwimveliso, ingcono, kwaye i-viscosity ihambelana ngokungafaniyo namandla okudibanisa. Ukuphakama kwe-viscosity, amandla aphantsi, ngokubanzi i-viscosity ye-100,000 S ifanelekile.