1. Yintoni igama le-hydroxypropyl methylcellulose?
——Impendulo: Hydroxypropyl Methyl Cellulose, IsiNgesi: Hydroxypropyl Methyl Cellulose Isifinyezo: HPMC okanye MHPC Alias: Hypromellose; iCellulose Hydroxypropyl Methyl Etere; Hypromellose, Cellulose, 2-hydroxypropylmethyl Cellulose ether. I-Cellulose hydroxypropyl methyl ether Hyprolose.
2. Yintoni eyona nto isetyenziswayo ye-hydroxypropyl methylcellulose (HPMC)?
——Impendulo: I-HPMC isetyenziswa kakhulu kwizinto zokwakha, iingubo, iintlaka zokwenziwa, iiseramikhi, amayeza, ukutya, amalaphu, ezolimo, izithambiso, icuba kunye namanye amashishini. I-HPMC inokohlulwa ibe yibakala lokwakha, ibakala lokutya kunye nebakala lamayeza ngokwenjongo. Okwangoku, uninzi lweemveliso zasekhaya zikumgangatho wokwakha. Kwibakala lokwakha, i-putty powder isetyenziswe kwisixa esikhulu, malunga ne-90% isetyenziselwa i-putty powder, kwaye intsalela isetyenziselwa udaka lwesamente kunye neglue.
3. Kukho iintlobo ezininzi ze-hydroxypropyl methylcellulose (HPMC), kwaye yintoni umahluko ekusebenziseni kwayo?
——Impendulo: I-HPMC inokohlulwa ibe luhlobo olukhawulezileyo kunye nohlobo lokuchithwa okushushu. Iimveliso zohlobo olukhawulezayo zisasazeka ngokukhawuleza emanzini abandayo kwaye zinyamalale emanzini. Ngeli xesha, ulwelo akukho viscosity kuba HPMC isasazwe kuphela emanzini ngaphandle ukunyibilika yokwenene. Malunga nemizuzu emi-2, i-viscosity yolwelo iyanda ngokuthe ngcembe, yenze i-colloid ebonakalayo ebonakalayo. Iimveliso ezincibilikisiweyo ezishushu, xa zidibene namanzi abandayo, ziyakwazi ukusasazeka ngokukhawuleza emanzini ashushu kwaye zinyamalale emanzini ashushu. Xa iqondo lobushushu lehla ukuya kwiqondo elithile lobushushu, i-viscosity iya kubonakala kancinane ide yenze i-colloid ebonakalayo ebonakalayo. Uhlobo lwe-hot-melt lunokusetyenziswa kuphela kwi-putty powder kunye nodaka. Kwiglue yolwelo kunye nepeyinti, kuya kubakho i-grouping phenomenon kwaye ayinakusetyenziswa. Uhlobo olukhawulezileyo lunoluhlu olubanzi lwezicelo. Ingasetyenziselwa kwi-putty powder kunye nodaka, kunye neglue yamanzi kunye nepeyinti, ngaphandle kokuchasana.
4. Indlela yokukhetha i-hydroxypropyl methylcellulose (HPMC) efanelekileyo ngeenjongo ezahlukeneyo?
-—Impendulo :: Ukusetyenziswa kwe-putty powder: Iimfuno ziphantsi, kwaye i-viscosity yi-100,000, eyaneleyo. Into ebalulekileyo kukugcina amanzi kakuhle. Ukusetyenziswa komdaka: iimfuno eziphezulu, i-viscosity ephezulu, i-150,000 ingcono. Ukusetyenziswa kweglue: iimveliso ezikhawulezayo ezine-viscosity ephezulu ziyafuneka.
5. Yintoni ekufuneka ihlawulwe kwisicelo sokwenene sobudlelwane phakathi kwe-viscosity kunye nobushushu be-HPMC?
——Impendulo: I-viscosity ye-HPMC ihambelana ngokungafaniyo neqondo lokushisa, oko kukuthi, i-viscosity iyanda njengoko ubushushu buyancipha. I-viscosity yemveliso esidla ngokubhekisela kuyo ibhekiselele kwisiphumo sovavanyo lwesisombululo sayo se-aqueous ye-2% kwiqondo lokushisa lama-20 degrees Celsius.
Kwizicelo eziphathekayo, kufuneka kuqatshelwe ukuba kwiindawo ezinomahluko omkhulu weqondo lokushisa phakathi kwehlobo nobusika, kucetyiswa ukuba kusetyenziswe i-viscosity ephantsi kakhulu ebusika, ehambelana nokwakhiwa. Ngaphandle koko, xa iqondo lokushisa liphantsi, i-viscosity ye-cellulose iya kwanda, kwaye ukuvakalelwa kwesandla kuya kuba nzima xa kukhuhla.
I-viscosity ephakathi: 75000-100000 ikakhulu isetyenziselwa i-putty
Isizathu: ukugcinwa kakuhle kwamanzi
I-viscosity ephezulu: 150000-200000 Ikakhulu isetyenziselwa i-polystyrene particle thermal insulation mortar rubber powder kunye ne-vitrified microbead thermal insulation mortar.
Isizathu: I-viscosity iphezulu, i-mortar ayilula ukuwa, i-sag, kwaye ukwakhiwa kuphuculwe.
6. I-HPMC yi-ether ye-cellulose engekho i-ionic, ngoko ke yintoni i-non-ionic?
——Impendulo: Ngokwemigaqo ye-layman, i-non-ion zizinto ezingenzi ionize emanzini. Ionization ibhekisela kwinkqubo apho i-electrolyte idityaniswe kwii-ion ezihlawulisiweyo ezinokuhamba ngokukhululekile kwi-solvent ethile (njengamanzi, utywala). Ngokomzekelo, i-sodium chloride (NaCl), ityuwa esiyidla yonke imihla, inyibilika emanzini kwaye i-ionizes ukuvelisa i-ion ze-sodium ezihamba ngokukhululekileyo (Na +) ezihlawuliswa kakuhle kunye ne-chloride ion (Cl) ehlawuliswa kakubi. Oko kukuthi, xa i-HPMC ifakwe emanzini, ayiyi kuhlukana kwii-ion ezihlawulisiweyo, kodwa zikhona ngendlela yeemolekyuli.
Ixesha lokuposa: Apr-26-2023