Hydroxypropylmethylrubicin (HPMC) o se mea cellulosic, pulupulu poʻo le cotton e mafai ona faʻaaogaina e faʻamamā ai le paʻu laupapa. A'o le'i fa'asalaina po'o le fa'aalalization e tatau ona fa'aumatia. O mea faʻaleagaina faʻainisinia e mafai ona faʻaumatia ai le fausaga faʻapipiʻi o le pepa cellulose mea, ma faʻaitiitia ai le polymerization ma le tioata, faʻateleina lona vaega faʻapitoa, ma faʻateleina ai le matrix e mafai ona avea ma macromolecular ternary ma cellulose.
Hydroxymethylcellulose o loʻo faʻaaogaina e fai ma sui i le gaosiga o suauʻu. O le faʻataʻitaʻiga aoga e mafai ona faʻamaeʻaina le faʻaogaina o le suka, faʻaleleia le faʻaogaina o meafaitino, faʻaitiitia le toega o le substrate i le vai faʻafefete, ma faʻaitiitia le tau o togafitiga vai otaota. O uiga o le faʻafefiloi e faʻamalosia i le faʻaogaina o le batch, fed-batch ma faʻaauau pea le faʻagasologa o le faʻafefeteina, aloese mai le faʻaogaina o vaega feololo ma fua faʻafefe, ma faʻafaigofieina foi le fetuunaiga o faiga faʻafefe. Talu ai ona o le HPMC o loʻo i ai le galuega tutusa e pei o isi ethers solu vai, e mafai ona faʻaaogaina e fai ma sui fai ata tifaga, mafiafia, emulsifier ma faʻamautu mo le latex vali ma vai-soluble resin vali, faʻatasi ai ma le faʻaogaina lelei o le ofuina, ufiufi toniga ma faʻapipiʻi Taulai i luga. faʻaleleia atili o le faʻalavelave i luga, mautu o le acid-base ma le fetaui ma pigments metallic.
O le tuufaatasiga o le hydroxypropylmethylcellulose (HPMC) ua faaletonu, ae i le mataupu faavae, ae gau substrate, faavae..etherification, dissolution
O le toe fa'aleleia o le sui e ala i le centrifugation, fufuluina, fa'agogo ma pa'i i si'osi'omaga ta'itasi e matua'i mauoa i tomai fa'avae ma le poto.
O mea faigaluega fesoasoani ma fa'atonuga e ala i-matamata o le a fesoasoani e fa'amautinoaina le lelei o oloa ma se faiga fa'alagolago. E a'afia ai le aofa'i o le vai i totonu o le paluga fa'afefiloi fa'amago-mix hydroxypropyl methylcellulose ether mortar e fa'aolaina ai le fa'aauau pea o le sima, sima ma substrate e fa'atele ai le taimi fa'apipi'i.
O loʻo i ai se aʻafiaga autu o le taofiofia o le vai, faʻamauina o le vai, faʻamauina o le susu o le paʻu putty, faʻapipiʻi ma lubrication galuega. Fa'aaoga lautele i fale faufale, fale vali ma le tele o isi pisinisi, hydroxypropyl methylcellulose e taua mo legaosiga o le hydroxypropyl methylcellulose. O le vevela gelation vevela e matua maualuga atu nai lo le methylcellulose. Lime ma soda e itiiti sona aafiaga i le faatinoga, ae mafai ona faatelevaveina le malepe o le matrix ma faateleina le viscosity. A'o le polyvinyl alcohol, starch ether, fugala'au fugala'au ma hydroxypropyl methylcellulose vali, ma isi, o le fa'asoa fa'asoa o le fausaga o lo'o i luga. A faʻaaogaina le sima, gypsum, paʻu paʻu poʻo isi mea e faʻapipiʻi, e mafai ona faʻaleleia le galue ma faʻaumiumi le taimi faigaluega. E mafai ona faʻaaogaina mo teuteuga, faʻapipiʻi tile, maamora, palasitika ma faʻaitiitia le faʻaogaina o le sima pepelo. O le slurry e taofia ai le vai pe a uma ona faʻamago o le a le vave taʻe, ma faʻaleleia le malosi pe a uma ona faʻamalolo.
Taimi meli: Tes-20-2022