1. Yintoni eyona nto isetyenziswayoihydroxypropyl methylcellulose (HPMC)?
I-Hydroxypropyl methylcellulose isetyenziswa ngokubanzi kwizinto zokwakha, iingubo, ii-resin zokwenziwa, iiseramikhi, amayeza, ukutya, amalaphu, ezolimo, izithambiso, icuba kunye namanye amashishini. I-Hydroxypropyl methylcellulose inokwahlulwa ibe yibakala lokwakha, ibakala lokutya kunye nebakala lamayeza ngokwesicelo sayo. 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.
2. Kukho iintlobo ezininzi ze-hydroxypropyl methylcellulose (HPMC), kwaye yintoni umahluko ekusebenziseni kwabo?
HPMC inokohlulwa ibe uhlobo olukhawulezileyo kunye nohlobo eshushu-ukuchithwa. Iimveliso zohlobo olukhawulezileyo zisasazeka ngokukhawuleza xa zidibana namanzi abandayo kwaye zinyamalale emanzini. Ngeli xesha, ulwelo akukho viscosity kuba HPMC isasazwe kuphela emanzini ngaphandle ukunyibilika real. Emva kwemizuzu emi-2, i-viscosity ye-liquid iyanda ngokuthe ngcembe, isenza i-colloid ebonakalayo ebonakalayo. Iimveliso ze-Hot-melt, xa zidibene namanzi abandayo, ziyakwazi ukusabalalisa 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.
3. Ziziphi iindlela zokuchithwa kwe-hydroxypropyl methylcellulose (HPMC)?
Indlela yokuchithwa kwamanzi ashushu: Ekubeni i-HPMC inganyibiliki emanzini ashushu, i-HPMC inokusasazwa ngokufanayo emanzini ashushu kwinqanaba lokuqala, kwaye emva koko inyibilike ngokukhawuleza xa ipholile. Iindlela ezimbini eziqhelekileyo zichazwa ngolu hlobo lulandelayo:
1) Beka umlinganiselo ofunekayo wamanzi ashushu kwisikhongozeli kwaye ufudumale ukuya kuma-70°C. I-hydroxypropyl methylcellulose yongezwa ngokuthe ngcembe phantsi kokuvuselela okucothayo, ekuqaleni i-HPMC yadada phezu kwamanzi, kwaye ngokuthe ngcembe yenze i-slurry, eyapholiswa phantsi kokuvuselela.
2) Yongeza i-1/3 okanye i-2/3 yomthamo ofunekayo wamanzi kwisitya, kwaye uyitshise ukuya kuma-70 ° C, ngokwendlela ye-1), ukusabalalisa i-HPMC ukulungiselela udaka lwamanzi ashushu; uze udibanise umlinganiselo oseleyo wamanzi abandayo kwi-slurry yamanzi ashushu, umxube wawupholile emva kokuvuselela.
Indlela yokuxuba umgubo: xuba i-HPMC yomgubo kunye nenani elikhulu lezinye izinto ezinomgubo, xuba ngokucokisekileyo kunye nomxube, uze udibanise amanzi ukuze unyibilike, ngoko i-HPMC inokunyibilika ngeli xesha ngaphandle kokudibanisa, kuba kukho kuphela i-HPMC encinane kwikona nganye yePowder encinci, iya kuchithwa ngokukhawuleza xa idibene namanzi. ——Umgubo weputty kunye nabavelisi bodaka basebenzisa le ndlela. [I-Hydroxypropyl methylcellulose (HPMC) isetyenziswa njenge-thickener kunye ne-arhente yokugcina amanzi kwiputty powder mortar.]
4. Indlela yokugweba umgangatho we-hydroxypropyl methylcellulose (HPMC) ngokulula kunye ne-intuitively?
(1) Ubumhlophe: Nangona ubumhlophe bungenakucacisa ukuba i-HPMC ilula ukuyisebenzisa, kwaye ukuba i-agent emhlophe yongezwa ngexesha lenkqubo yokuvelisa, iya kuchaphazela umgangatho wayo. Nangona kunjalo, uninzi lweemveliso ezilungileyo zinobumhlophe obuhle.
(2) Ukulunga: Ukulunga kwe-HPMC ngokuqhelekileyo kune-80 mesh kunye ne-100 mesh, i-120 mesh ingaphantsi, kwaye uninzi lwe-HPMC eveliswe e-Hebei yi-80 mesh. Okukhona ukucoleka, xa sithetha ngokubanzi, kungcono.
(3) Ukuhanjiswa: Faka i-hydroxypropyl methylcellulose (HPMC) emanzini ukwenza i-colloid ebonakalayo, kwaye ukhangele ukuhanjiswa kwayo. Okukhona ugqithiso luphezulu, lungcono, lubonisa ukuba akukho nto inganyibilikiyo kuyo. Ukungena kwereactors ezithe nkqo kulungile, kwaye oko kwereactors ezixwesileyo kubi kakhulu, kodwa ayithethi ukuba umgangatho weereactors ezithe nkqo ungcono kunolo weereactor ezithe tye, kwaye umgangatho wemveliso umiselwa yimiba emininzi.
(4) Umxhuzulane okhethekileyo: Okukhona umkhulu umxhuzulane othile, kokukhona unzima ngakumbi. Ubuncinci bukhulu, ngokuqhelekileyo ngenxa yokuba umxholo weqela le-hydroxypropyl kuwo uphezulu, kwaye umxholo weqela le-hydroxypropyl liphezulu, ukugcinwa kwamanzi kungcono.
5. Yintoni ubungakanani be-hydroxypropyl methylcellulose (HPMC) kwi-putty powder?
Isixa se-HPMC esisetyenziswe kwizicelo eziphathekayo siyahluka ngokuxhomekeka kwimozulu, ubushushu, umgangatho we-calcium ash ash yendawo, ifomula ye-putty powder kunye "nomgangatho ofunwa ngabathengi". Ngokuqhelekileyo, phakathi kwe-4 kg kunye ne-5 kg. Umzekelo: ininzi ye-putty powder e-Beijing yi-5 kg; ininzi ye-putty powder e-Guizhou yi-5 kg ehlotyeni kunye ne-4.5 kg ebusika; isixa seputty powder eYunnan sincinci, ngokubanzi 3 kg ukuya kwi-4 kg, njl.
6. Yintoni i-viscosity efanelekileyo ye-hydroxypropyl methylcellulose (HPMC)?
Iputty powder yanele 100,000 yuan, kwaye iimfuno zodaka ziphezulu, kwaye 150,000 yuan ziyafuneka ukuze zisetyenziswe lula. Ngaphezu koko, owona msebenzi ubalulekileyo we-HPMC kukugcina amanzi, kulandelwa kukuqina. Kwi-putty powder, ngokude nje ukugcinwa kwamanzi kulungile kwaye i-viscosity iphantsi (i-70,000-80,000), nayo inokwenzeka. Ngokuqinisekileyo, ukuphakama kwe-viscosity, ngcono ukugcinwa kwamanzi okuhambelanayo. Xa i-viscosity idlula i-100,000, i-viscosity iya kuchaphazela ukugcinwa kwamanzi. Akusekho kakhulu.
7. Ziziphi iimpawu eziphambili zezobugcisa ze-hydroxypropyl methylcellulose (HPMC)?
Umxholo weHydroxypropyl kunye ne-viscosity, abaninzi abasebenzisi banenkxalabo malunga nezi zikhombisi zimbini. Abo banomxholo ophezulu we-hydroxypropyl ngokubanzi banokugcinwa kwamanzi okungcono. Lowo une-viscosity ephezulu unokugcinwa kwamanzi okungcono, ngokulinganayo (kungekhona ngokupheleleyo), kwaye lowo une-viscosity ephezulu isetyenziswe kangcono kwi-samente mortar.
8. Zeziphi ezona mathiriyeli ziphambiliihydroxypropyl methylcellulose (HPMC)?
Izinto eziphambili ze-hydroxypropyl methylcellulose (HPMC): i-cotton ecocekileyo, i-methyl chloride, i-propylene oxide, kunye nezinye izinto eziluhlaza, i-caustic soda, i-asidi, i-toluene, i-isopropanol, njl.
9. Yintoni umsebenzi oyintloko wokusetyenziswa kwe-HPMC kwi-putty powder, kwaye ngaba kwenzeka ngamakhemikhali?
Kwi-putty powder, i-HPMC idlala iindima ezintathu zokuqina, ukugcinwa kwamanzi kunye nokwakhiwa. Ukutyebisa: Iselulosi inokujiya ukuze inqunyanyiswe kwaye igcine iyunifomu yesisombululo inyuka naphantsi, kwaye imelane nokudodobala. Ukugcinwa kwamanzi: yenza i-putty powder yome kancinci, kwaye uncedise i-calcium yothuthu ukuba isabele phantsi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inefuthe lokuthambisa, elinokwenza ukuba i-putty powder ibe nokwakhiwa kakuhle. I-HPMC ayithathi nxaxheba kuyo nayiphi na intshukumo yeekhemikhali, kodwa idlala indima encedisayo kuphela. Ukongeza amanzi kwi-putty powder kunye nokuyibeka eludongeni kukusabela kweekhemikhali, kuba izinto ezintsha zenziwe. Ukuba ususa i-putty powder eludongeni eludongeni, uyigaye ibe ngumgubo, kwaye uyisebenzise kwakhona, ayiyi kusebenza ngenxa yokuba izinto ezintsha (i-calcium carbonate) zenziwe.) Kwakhona. Amacandelo aphambili e-ash calcium powder zezi: umxube we-Ca (OH) 2, i-Ca O kunye nenani elincinci le-CaCO3, i-CaO+H2O=Ca (OH)2-Ca (OH) 2+CO2=CaCO3↓+H2O I-calcium e-ash isemanzini nasemoyeni Ngaphantsi kwesenzo se-CO2, i-calcium carbonate yenziwe, ngelixa i-HPMC igcina inxaxheba kuphela kwi-reaction yamanzi, igcina i-reaction ngokwayo, igcina nayiphi na i-reaction yamanzi, igcina i-reaction ngokwayo.
10. I-HPMC yi-ether ye-cellulose engekho i-ionic, ngoko yintoni i-non-ionic?
Ngokwemigaqo ye-layman, i-non-ion zizinto ezingenayo i-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, niniHPMCifakwe emanzini, ayiyi kuhlukana ibe yi-ion ehlawulisiweyo, kodwa ikhona ngendlela yeemolekyuli.
Ixesha lokuposa: Apr-28-2024