Ukugcinwa kwamanzi kwe-hydroxypropyl methylcellulose ether
Ukugcinwa kwamanzi odaka lomxube owomileyo kubhekiselele kubuchule bodaka ukubamba kunye nokutshixa amanzi. Okukhona iphezulu i-viscosity ye-hydroxypropyl methylcellulose ether, kokukhona kungcono ukugcinwa kwamanzi. Ngenxa yokuba isakhiwo se-cellulose sine-hydroxyl kunye neebhondi ze-ether, ii-athomu ze-oksijini kwi-hydroxyl kunye namaqela e-ether bond adibanisa ne-molecule zamanzi ukuze zenze i-hydrogen bonds, ukuze amanzi akhululekile abe ngamanzi abophekileyo kwaye adibanise amanzi, ngaloo ndlela edlala indima yokugcina amanzi.
Ukunyibilika kwe-Hydroxypropyl Methyl Cellulose Etere
1. I-ether ye-particle cellulose e-coarse kulula ukusabalalisa emanzini ngaphandle kwe-agglomeration, kodwa izinga lokuchithwa licotha kakhulu. I-ether ye-cellulose engaphantsi kwe-60 mesh inyibilika emanzini malunga nemizuzu engama-60.
2. I-fine particle cellulose ether kulula ukusabalalisa emanzini ngaphandle kwe-agglomeration, kwaye izinga lokuchithwa liphakathi. I-ether ye-cellulose ngaphezu kwe-80 mesh inyibilika emanzini malunga nemizuzu emi-3.
3. I-ultra-fine particle cellulose ether isasazeka ngokukhawuleza emanzini, inyibilika ngokukhawuleza, kwaye yenza i-viscosity ngokukhawuleza. I-ether ye-cellulose ngaphezu kwe-120 mesh inyibilika emanzini malunga ne-10-30 imizuzwana.
Ukugqwesa kwamasuntswana e-hydroxypropyl methylcellulose ether, kungcono ukugcinwa kwamanzi. Umphezulu we-coarse-grained cellulose ether unyibilika ngokukhawuleza emva kokudibana namanzi kwaye wenze i-gel phenomenon. I-glue igubungela izinto zokuthintela iimolekyuli zamanzi ukuba zingaqhubeki nokungena. Ngamanye amaxesha ayinakuchithwa ngokulinganayo kwaye inyibilikiswe nasemva kwexesha elide, ukwenza isisombululo esinamafu okanye i-agglomeration. Iinqununu ezintle zichithakala kwaye zichithe ngokukhawuleza emva kokudibanisa namanzi ukwenza i-viscosity efanayo.
Ixabiso le-PH le-hydroxypropyl methylcellulose ether (ukubuyisela umva okanye umphumo wamandla kwangethuba)
Ixabiso le-pH labenzi be-ether ye-hydroxypropyl methylcellulose ekhaya nakwamanye amazwe ilawulwa ngokusisiseko malunga ne-7, ekwimeko ye-acidic. Ngenxa yokuba kusekho inani elikhulu lezakhiwo zendandatho ye-anhydroglucose kwisakhiwo se-molecular ye-cellulose ether, i-anhydroglucose ring liqela eliphambili elibangela ukuchithwa kwe-cement. Iringi ye-anhydroglucose inokwenza i-calcium ion kwisisombululo se-cement hydration ivelise i-sugar-calcium i-molecular compounds, ukunciphisa i-calcium ion concentration ngexesha lokungeniswa kwe-cement hydration, ukuthintela ukubunjwa kunye nemvula ye-calcium hydroxide kunye ne-calcium ityuwa crystals, kunye nokulibazisa ukuchithwa kwe-samente. inkqubo. Ukuba ixabiso le-PH likwimeko yealkaline, udaka luya kuvela kwimeko yamandla-kwangoko. Ngoku uninzi lweefektri zisebenzisa i-sodium carbonate ukulungisa ixabiso le-pH. I-Sodium carbonate luhlobo lwe-agent ekhawulezayo yokubeka. I-carbonate ye-sodium iphucula ukusebenza kwendawo yeengqungquthela zesamente, ikhuthaza ukubambisana phakathi kweengqungquthela, kwaye iphucula ngakumbi i-viscosity yodaka. Ngelo xesha, i-sodium carbonate idibanisa ngokukhawuleza kunye ne-calcium ions kwi-mortar ukukhuthaza ukubunjwa kwe-ettringite, kunye ne-cement coagulates ngokukhawuleza. Ngoko ke, ixabiso le-pH kufuneka lihlengahlengiswe ngokuhambelana nabathengi abahlukeneyo kwinkqubo yokuvelisa ngokwenene.
IiPropati zokuQinisekisa komoya zeHydroxypropyl Methyl Cellulose Ether
Impembelelo yokungenisa umoya ye-hydroxypropyl methylcellulose ether ikakhulu kungenxa yokuba i-cellulose ether ikwaluhlobo lwe-surfactant. Umsebenzi we-interfacial we-cellulose ether wenziwa ikakhulu kwi-gas-liquid-solid interface. Okokuqala, ukuqaliswa kwamaqamza omoya, kulandelwa yi-dispersion kunye ne-Wetting effect. I-Cellulose ether iqulethe amaqela e-alkyl, anciphisa ngokuphawulekayo ukuxinezeleka komphezulu kunye namandla okudibanisa ubuso bamanzi, okwenza kube lula ukuvelisa amaqamza amancinci amancinci avaliweyo ngexesha lenkqubo yokuvuselela isisombululo samanzi.
Iipropati zeGel zeHydroxypropyl Methyl Cellulose Ether
Emva kokuba i-hydroxypropyl methylcellulose ether ichithwe kumdaka, i-methoxyl kunye namaqela e-hydroxypropyl kwikhonkco le-molecular iya kusabela kunye ne-calcium ion kunye ne-aluminium ion kwi-slurry ukwenza i-gel viscous kwaye igcwalise i-cement mortar void. , ukuphucula ukunyanzeliswa komdaka, udlale indima yokuzaliswa okuguquguqukayo kunye nokuqiniswa. Nangona kunjalo, xa i-matrix edibeneyo iphantsi koxinzelelo, i-polymer ayikwazi ukudlala indima exhasayo eqinile, ngoko ke amandla kunye nomlinganiselo wokusonga we-mortar uyancipha.
Ukwenziwa kweFilimu yeHydroxypropyl Methyl Cellulose Ether
Emva kokuba i-hydroxypropyl methyl cellulose ether yongezwa kwi-hydration, ifilimu encinci yefilimu ye-latex yenziwa phakathi kweengqungquthela zesamente. Le filimu inesiphumo sokutywinwa kwaye iphucula ukomisa komphezulu wodaka. Ngenxa yokugcinwa kakuhle kwamanzi kwe-hydroxypropyl methylcellulose ether, iimolekyuli zamanzi ezaneleyo zigcinwa ngaphakathi kodaka, ngaloo ndlela ziqinisekisa ukuqina kwe-samente kunye nophuhliso olupheleleyo lwamandla, ukuphucula amandla okubopha udaka, kwaye kwangaxeshanye Iphucula ukubumbana kodaka, yenza ukuba udaka lube ne-flexible yeplastiki kunye nokunciphisa i-flexible ye-plastic. udaka.
Ixesha lokuposa: May-23-2023