Tan iyo sifooyinka hydroxypropyl methylcellulose la mid yihiin ethers kale oo biyo-milmi leh, waxaa loo isticmaali karaa in daahan emulsion iyo qaybaha daahan biyo-milmi leh sida wakiilka filim-samaynta, dhumuc weyn, emulsifier iyo stabilizer, iwm, kaas oo siinaya filimka daahan. iska caabin abrasion wanaagsan.Dahaarka isku midka ah iyo isku dhejinta, iyo hagaajinta kacsanaanta dusha sare, xasilloonida asiidhka iyo saldhigyada, iyo ku habboonaanta midabada birta ah.
Maadaama HPMC ay leedahay dhibic jel ah oo ka sareysa MC, waxay sidoo kale aad uga adkeysi badan tahay weerarka bakteeriyada marka loo eego ether-yada kale ee cellulose, sidaas darteed waxaa loo isticmaali karaa wakiil dhumuc leh oo loogu talagalay daahanka aqueous emulsion.HPMC waxay leedahay xasillooni kaydinta viscosity wanaagsan iyo kala firdhisanaanteeda aad u fiican, sidaas darteed HPMC waxay si gaar ah ugu habboon tahay daahannada emulsion-ka.
Codsiga hydroxypropyl methyl cellulose ee warshadaha daahan waa sida soo socota.
1.various viscosity qaabeynta HPMC rinjiga xidho iska caabin ah, iska caabin heerkulka sare, sharraxaadda anti-bakteeriyada, caabbinta dhaqidda iyo xasiloonida in acids iyo saldhigyada waa ka wanaagsan yahay;waxa kale oo loo isticmaali karaa sidii rinji ka samaysan oo ay ku jiraan methanol, ethanol, propanol, isopropyl alcohol, ethylene glycol, acetone, methyl ethyl ketone ama diketone aalkolada;Dahaarka la sameeyay ee HPMC waxay leeyihiin nabar qoyan oo heer sare ah;HPMC marka loo eego HEC iyo EHEC iyo CMC maadaama HPMC ay ka saameyn wanaagsan tahay HEC iyo EHEC iyo CMC sida dhumuc weyn oo rinji ah.
2.Hydroxypropyl methyl cellulose oo aad loo beddelay ayaa iska caabin wanaagsan u leh weerarka bakteeriyada marka loo eego beddelka hooseeya, wuxuuna leeyahay xasilloonida viscosity ee dhumucda polyvinyl acetate.Ether-yada kale ee cellulose-ka ayaa ku jira kaydinta sababtoo ah hoos u dhaca silsiladda ether-ka cellulose waxayna ka dhigaan viscosity dahaarka la yareeyo.
3.paint stripper waxay noqon kartaa HPMC biyo-milmi leh (halka methoxy waa 28% ilaa 32%, hydroxypropoxy waa 7% ilaa 12%), dioxymethane, toluene, paraffin, ethanol, qaabeynta methanol, waxaa lagu dabaqi doonaa dusha sare, oo leh viscosity iyo isbedbeddelka loo baahan yahay.Rinjigan rinjiga ah wuxuu meesha ka saarayaa rinjiyada buufinta caadiga ah ee caadiga ah, varnishes, dhaldhalaalka, iyo epoxy esters qaarkood, epoxy amides, catalyzed epoxy amides, acrylates, iwm. Rinjiga jeexjeexa ayaa si gaar ah ugu habboon sagxadaha alwaaxda.
4.Water emulsion rinjiga wuxuu ka koobnaan karaa 100 qaybood oo ka mid ah midabka organic ama organic, 0.5 ~ 20 qaybo ka mid ah cellulose alkyl biyo-milmi ama hydroxyalkyl cellulose iyo 0.01 ~ 5 qaybaha polyoxyethylene ether ama ester ester.Tusaale ahaan, midabaynta waxaa lagu helaa iyadoo la isku darayo 1.5 qaybood oo HPMC ah, 0.05 qaybood oo polyetylen glycol ah alkyl phenyl ether, 99.7 qaybood oo ah titanium dioxide iyo 0.3 qaybood oo kaarboon madow ah.Isku darka ayaa markaa lagu walaaqayaa 100 qaybood oo ah 50% polyvinyl acetate adag si loo helo daahan, mana jirto wax farqi ah oo u dhexeeya filimka qalalan ee qalalan ee la sameeyay adigoo isticmaalaya warqad qaro weyn oo si khafiif ah u xoqin burush.
Waqtiga boostada: Meey-20-2022