1.hydroxypylpyl methyl bylulose
Hydroxypropyl methylrcelluloseWaa unugyada unugyada laf-dhabarka oo wax soo saarkooda iyo isticmaalku si dhakhso ah u kordhayo. Waa unug-ilkeed oo aan ifirin ether ah oo laga sameeyay suufka la safeeyey ka dib aalad-damiska kadib, adoo isticmaalaya propylone okside iyo methyl chloride sida wakiilka ethert chloride, oo ah jawaab celin taxane ah. Heerka beddelka guud ahaan waa 1.2 ~ 2.0. Guryadihiisu way kala duwan yihiin iyadoo kuxiran saamiga daawada methoxyl ee ku jira hydroxypropyl.
(1) Hydroxypropylykylkellellase Methylcellellase si fudud ayaa loogu milminayaa biyo qabow, oo waxay la kulmi doontaa dhibaatooyin xagga kala-baxa biyaha kulul. Laakiin heerkulka uu ku jiro biyaha kulul ayaa si aad ah uga sarreeya kan methyl bylulose. Xabfaynta biyaha qabow ayaa sidoo kale si weyn loo wanaajiyaa marka la barbar dhigo bylulose.
(2) (2) Muuqaalka hydroxypropylkyl methylcelrellase waxay la xiriirtaa miisaankeeda molikal, iyo culeyska weyn ee molecular, oo ka sarreeya viscosity. Heerkulku wuxuu sidoo kale saameeyaa muuqaalkiisa, maadaama heerkulku kordho, viscosity yaraanta. Si kastaba ha noqotee, saameynta codkeeda sare iyo heerkulka ayaa ka hooseeya kan metlulose. Xalkeeda ayaa xasilloon marka lagu keydiyo heerkulka qolka.
(3) Hay'adda haynta biyaha ee hydroxypropylylcelrelose waxay kuxirantahay qaddarka, viscosity, iwm.
(4) Hydroxypropylylcellellalose wuxuu deggan yahay aashitada iyo alkali, iyo xalka aqueous waa mid aad u deggan xalka PH = 2 ~ 12. Biyaha caustic iyo lime waxay saameyn yar ku leeyihiin wax qabadkeeda, laakiin alkali waxay dardargelin kartaa heerka kala-baxa oo waxyar kordhiya codkeeda. Hydroxypropylylulose methylcelrellose wuxuu deggan yahay in cusbada caanka ah, laakiin markii ururinta milixda ay sarreyso, balsi-socodka hydroxypropyl pratylcelrenose xalka ayaa kor u kacaya.
(5) Hydroxypropylylchellelose waxaa lagu qasi karaa polymers biyo-ku-milma si loo sameeyo xal isku-dhafan, oo kacsan. Sida aalkolada polyvinyl, istaarch ether, xanjada khudradda, iwm.
(6) Hydroxypropylylcellellas methylcelrelose wuxuu leeyahay iska caabbinta enzyme ee ka wanaagsan kan methymelolose, xalka ay u badan tahay in ay u yaraato enzymes ka badan methylcellosuse.
(7) Aamusnaanta hydroxypropylykyl methylcelrellase in dhismaha madaafiicda ay ka sarreeyaan kan methylcellosuse.
2. Hydroxyetylyl
Waxaa laga sameeyay suufka lagu daaweeyay ee lagu daweeyo alkali, oo uu ka falceliyay ethylenenene ovide sida wakiilka ethil-ka ah joogitaanka isopropanol. Darajada ay ka beddesho guud ahaan waa 1.5 ~ 2.0. Waxay leedahay biyo-qabad adag oo way fududahay in la nuugo qoyaanka.
(1) hydroxytyl cellulose wuxuu ku milmiyaa biyo qabow, laakiin way adagtahay in lagula milmo biyaha kulul. Xalkeeda ayaa xasilloon heerkul sare oo aan gurguurin. Waxaa loo isticmaali karaa waqti dheer oo heerkul sarreeya ka hooseeya hoobiye, laakiin haynta biyuhu way ka hooseeyaan kan methyl bylulose.
(2)Hydroxyetylyl cellwaxay xasilloon tahay aashitada guud iyo alkali, iyo alkali wuxuu dardargelin karaa kala-baxa oo waxyar kordhin kara viscosity. Kala soociddeeda biyo-mareenku waxyar ayuu ka xun yahay kan methyl bylulose iyo hydroxypropyl bylulose.
(3) Hydroxyetyl cellulose waxay leedahay wax qabad wanaagsan oo lagula dagaallamo madaafiic, laakiin waqti dheer ayey leedahay sibidhka.
(4) Waxqabadka hydroxykyl cellule celluse waxaa soo saaray qaar ka mid ah shirkadaha ganacsiga qaarkood waxay si cad uga yar yihiin tan methyl bluelose sababtuna tahay biyaha biyaha sare iyo ashtarka sare.
(5) Cadaabkii canaambi ee xalka aqueous ee hydroxyetyl bylulose waa mid daran. Heerkulka qiyaastii 40 ° C, wax-ka-cashuurta ayaa dhici karta 3 ilaa 5 maalmood gudahood, kaasoo saameyn ku yeelan doona waxqabadkiisa.
Waqtiga Post: apr-28-2024