1. Iyini ukusetshenziswa okuyinhloko kwe-hydroxypropyl methylcellulose (HPMC)?
I-HPMC isetshenziswa kabanzi ezintweni zokwakha, ezimbozweni, ezitsheni zokwenziwa, ezitsheni zobumba, kwezokwelapha, ekudleni, ezindwangu, kwezolimo, ezimonyweni, egwayi nakwezinye izimboni. I-HPMC ingahlukaniswa ngebanga lokwakha, izinga lokudla kanye nezinga lemithi ngokwenhloso. Njengamanje, iningi lemikhiqizo yasekhaya libanga lokwakha. Ebangeni lokwakha, i-putty powder isetshenziswa ngenani elikhulu, cishe u-90% usetshenziselwa i-putty powder, kanti okusele kusetshenziselwa i-samente mortar kanye ne-glue.
2. Kunezinhlobo eziningana ze-hydroxypropyl methylcellulose (HPMC), futhi yimuphi umehluko ekusetshenzisweni kwazo?
I-HPMC ingahlukaniswa ngohlobo olusheshayo kanye nohlobo lokuncibilika okushisayo. Umkhiqizo wohlobo olusheshayo uhlakazeka ngokushesha emanzini abandayo bese unyamalala emanzini. Ngalesi sikhathi, uketshezi alunawo u-viscosity ngoba i-HPMC ihlakazeka kuphela emanzini ngaphandle kokuncibilika kwangempela. Cishe imizuzu emi-2, u-viscosity woketshezi uyanda kancane kancane, wakhe i-colloid ecacile ethambile. Imikhiqizo encibilikayo eshisayo, uma ihlangana namanzi abandayo, ingahlakazeka ngokushesha emanzini ashisayo bese inyamalala emanzini ashisayo. Lapho izinga lokushisa lehla liye ezingeni lokushisa elithile, u-viscosity uzovela kancane kancane uze wakhe i-colloid ecacile ethambile. Uhlobo oluncibilikayo olushisayo lungasetshenziswa kuphela ku-putty powder kanye no-mortar. Ku-glue nopende oluyi-liquid, kuzoba khona isenzakalo sokuhlela futhi alukwazi ukusetshenziswa. Uhlobo olusheshayo lunezinhlobo eziningi zokusetshenziswa. Lungasetshenziswa ku-putty powder kanye no-mortar, kanye ne-liquid glue nopende, ngaphandle kokuphikisana.
3. Yiziphi izindlela zokuncibilikisa i-hydroxypropyl methylcellulose (HPMC)?
Indlela yokuncibilikisa amanzi ashisayo: Njengoba i-HPMC ingancibilikisi emanzini ashisayo, i-HPMC ingahlakazeka ngokulinganayo emanzini ashisayo esigabeni sokuqala, bese incibilika ngokushesha uma ipholile. Izindlela ezimbili ezijwayelekile zichazwa kanje:
1) Faka inani elidingekayo lamanzi ashisayo esitsheni bese ulifudumeza cishe ku-70°C. I-hydroxypropyl methylcellulose yengezwa kancane kancane ngaphansi kokuxubha kancane, ekuqaleni i-HPMC yantanta phezu kwamanzi, yabe isiba yisicaba kancane kancane, esasipholiswa ngaphansi kokuxubha.
2), engeza i-1/3 noma i-2/3 yenani lamanzi elidingekayo esitsheni, bese ulishisa ku-70°C, usakaze i-HPMC ngokwendlela yoku-1), bese ulungisa i-slurry yamanzi ashisayo; bese ufaka inani elisele lamanzi abandayo ku-slurry yamanzi ashisayo, ingxube ipholiswe ngemva kokuyixuba.
Indlela yokuxuba i-powder: hlanganisa i-HPMC powder nenani elikhulu lezinye izinto eziwumpuphu, hlanganisa kahle ngomshini wokuxuba, bese ufaka amanzi ukuze ancibilike, khona-ke i-HPMC ingancibilika ngalesi sikhathi ngaphandle kokuhlanganiswa, ngoba kukhona i-HPMC encane kuphela ekhoneni ngalinye elincane i-Powder, izoncibilika ngokushesha uma ithintana namanzi. ——Abakhiqizi be-Putty powder kanye ne-mortar basebenzisa le ndlela. [I-Hydroxypropyl methylcellulose (HPMC) isetshenziswa njenge-thickener kanye ne-ejenti yokugcina amanzi ku-putty powder mortar.]
4. Ungahlulela kanjani ikhwalithi ye-hydroxypropyl methylcellulose (HPMC) kalula nangokuqondakalayo?
(1) Ubumhlophe: Nakuba ubumhlophe bungenakunquma ukuthi i-HPMC kulula ukuyisebenzisa, futhi uma kungezwa izinto zokwenza mhlophe ngesikhathi senqubo yokukhiqiza, kuzothinta ikhwalithi yayo. Kodwa-ke, imikhiqizo eminingi emihle inobumhlophe obuhle.
(2) Ubunono: Ubunono be-HPMC ngokuvamile bunama-mesh angu-80 kanye nama-mesh angu-100, kanti ama-mesh angu-120 angaphansi. Iningi le-HPMC elikhiqizwa e-Hebei lingama-mesh angu-80. Uma ubunono buncane, ngokuvamile, kuba ngcono.
(3) Ukudluliselwa kokukhanya: faka i-hydroxypropyl methylcellulose (HPMC) emanzini ukuze wakhe i-colloid esobala, bese ubheka ukudluliselwa kwayo kokukhanya. Uma ukudluliselwa kokukhanya kukhulu, kungcono, okubonisa ukuthi kunezincane ezingancibiliki kukho. . Ukungenela kwama-reactor aqondile ngokuvamile kuhle, kanti ama-reactor aqondile kubi kakhulu, kodwa akusho ukuthi ikhwalithi yama-reactor aqondile ingcono kuneyama-reactor aqondile, futhi ikhwalithi yomkhiqizo inqunywa yizici eziningi.
(4) Amandla adonsela phansi athile: Uma amandla adonsela phansi athile emakhulu, kulapho esinda khona. Amandla adonsela phansi aphezulu, ngokuvamile ngoba okuqukethwe yiqembu le-hydroxypropyl elikuyo kuphakeme, kanti okuqukethwe yiqembu le-hydroxypropyl kuphakeme, ukugcinwa kwamanzi kungcono.
5. Lingakanani inani le-hydroxypropyl methylcellulose (HPMC) ku-putty powder?
Inani le-HPMC elisetshenziswa ezisetshenziswayo liyahlukahluka kuye ngesimo sezulu, izinga lokushisa, ikhwalithi ye-calcium yomlotha wendawo, ifomula ye-putty powder kanye "nekhwalithi edingekayo kumakhasimende". Ngokuvamile, phakathi kuka-4 kg no-5 kg. Isibonelo: iningi le-putty powder eBeijing lingu-5 kg; iningi le-putty powder eGuizhou lingu-5 kg ehlobo kanye no-4.5 kg ebusika; inani le-putty eYunnan lincane kakhulu, ngokuvamile lisukela ku-3 kg kuya ku-4 kg, njll.
6. Iyini i-viscosity efanele ye-hydroxypropyl methylcellulose (HPMC)?
Impuphu ye-putty ngokuvamile ingama-yuan ayi-100,000, kanti izidingo ze-mortar ziphakeme, kanti ama-yuan ayi-150,000 ayadingeka ukuze kube lula ukuyisebenzisa. Ngaphezu kwalokho, umsebenzi obaluleke kakhulu we-HPMC ukugcina amanzi, kulandelwe ukujiya. Kumpuphu ye-putty, inqobo nje uma ukugcina amanzi kukuhle futhi i-viscosity iphansi (70,000-80,000), kungenzeka futhi. Vele, uma i-viscosity iphakeme, kungcono ukugcinwa kwamanzi. Lapho i-viscosity idlula i-100,000, i-viscosity izothinta ukugcinwa kwamanzi. Akusekho okuningi.
7. Yiziphi izinkomba zobuchwepheshe eziyinhloko ze-hydroxypropyl methylcellulose (HPMC)?
Okuqukethwe kwe-hydroxypropyl kanye ne-viscosity, abasebenzisi abaningi bakhathazekile ngalezi zinkomba ezimbili. Labo abanokuqukethwe okuphezulu kwe-hydroxypropyl ngokuvamile banokugcinwa kwamanzi okungcono. Leyo enokugcinwa kwamanzi okungcono, uma kuqhathaniswa (hhayi ngokuphelele), kanti leyo enokugcinwa kwamanzi okuphezulu isetshenziswa kangcono ku-cement mortar.
8. Yiziphi izinto eziyinhloko zokusetshenziswa kwe-hydroxypropyl methylcellulose (HPMC)?
Izinto zokusetshenziswa eziyinhloko ze-hydroxypropyl methylcellulose (HPMC): ukotini ocolisisiwe, i-methyl chloride, i-propylene oxide, nezinye izinto zokusetshenziswa, i-caustic soda, i-acid, i-toluene, i-isopropanol, njll.
9. Uyini umsebenzi oyinhloko wokusetshenziswa kwe-HPMC ku-putty powder, futhi ingabe kwenzeka ngamakhemikhali?
Ku-putty powder, i-HPMC idlala indima ezintathu zokuqina, ukugcinwa kwamanzi kanye nokwakhiwa. Ukuqina: I-Cellulose ingaqiniswa ukuze imise futhi igcine isisombululo silingana phezulu naphansi, futhi imelane nokuwa. Ukugcinwa kwamanzi: yenza i-putty powder yome kancane, futhi isize i-calcium yomlotha ukuthi isabele ngaphansi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inomphumela wokugcoba, ongenza i-putty powder ibe nokwakhiwa okuhle. I-HPMC ayihlanganyeli kunoma yikuphi ukusabela kwamakhemikhali, kodwa idlala indima yokusiza kuphela. Ukwengeza amanzi ku-putty powder bese uyibeka odongeni kuyindlela yokusabela kwamakhemikhali, ngoba kwakheka izinto ezintsha. Uma ususa i-putty powder odongeni, uyigaye ibe yi-powder, bese uyisebenzisa futhi, ngeke isebenze ngoba izinto ezintsha (i-calcium carbonate) sezivele zakhekile. ) futhi. Izakhi eziyinhloko zempuphu ye-calcium yomlotha yilezi: ingxube ye-Ca(OH)2, i-CaO kanye nenani elincane le-CaCO3, i-CaO+H2O=Ca(OH)2—Ca(OH)2+CO2=CaCO3↓+H2O I-calcium yomlotha isemanzini nasemoyeni Ngaphansi kwesenzo se-CO2, kukhiqizwa i-calcium carbonate, kuyilapho i-HPMC igcina amanzi kuphela, isiza ukusabela okungcono kwe-calcium yomlotha, futhi ayihlanganyeli kunoma yikuphi ukusabela ngokwayo.
10. I-HPMC iyi-ether ye-cellulose engeyona i-ionic, ngakho-ke iyini i-non-ionic?
Ngokwe-layman, ama-non-ion ayizinto ezingayi-ion emanzini. I-ionization ibhekisela enkambisweni lapho i-electrolyte ihlukaniswa khona ibe ama-ion ashajekile angahamba ngokukhululeka ku-solvent ethile (njengamanzi, utshwala). Isibonelo, i-sodium chloride (NaCl), usawoti esiwudla nsuku zonke, uyancibilika emanzini bese uyayi-ion ukuze ukhiqize ama-ion e-sodium ahambayo ngokukhululeka (Na+) ashajekile kahle kanye nama-ion e-chloride (Cl) ashajekile kabi. Okusho ukuthi, uma i-HPMC ifakwa emanzini, ngeke ihlukane ibe ama-ion ashajekile, kodwa ikhona ngesimo sama-molecule.
11. Lihlobene kanjani izinga lokushisa lejeli le-hydroxypropyl methylcellulose?
Izinga lokushisa lejeli le-HPMC lihlobene nokuqukethwe kwayo kwe-methoxy, uma okuqukethwe kwe-methoxy kuphansi ↓, izinga lokushisa lejeli liphakeme ↑.
12. Ingabe kukhona ubudlelwano phakathi kokwehla kwempuphu ye-putty kanye ne-HPMC?
Ukulahleka kwempuphu yempuphu ye-putty kuhlobene kakhulu nekhwalithi ye-calcium yomlotha, futhi akuhlobene kakhulu ne-HPMC. Okuqukethwe kwe-calcium ephansi ye-calcium empunga kanye nesilinganiso esingafanele se-CaO kanye ne-Ca(OH)2 ku-calcium empunga kuzobangela ukulahleka kwempuphu. Uma kuhlobene ne-HPMC, khona-ke uma i-HPMC inokugcinwa kwamanzi okungekuhle, kuzobangela nokulahleka kwempuphu. Ngezizathu ezithile, sicela ubheke umbuzo 9.
13. Uyini umehluko phakathi kohlobo lwe-cold-water instant kanye nohlobo lwe-hydroxypropyl methylcellulose oluncibilikayo enqubweni yokukhiqiza?
Uhlobo lwe-HPMC olusheshayo ngamanzi abandayo luphathwa nge-glyoxal ebusweni, futhi lusakazeka ngokushesha emanzini abandayo, kodwa aluncibiliki ngempela. Luncibilika kuphela lapho i-viscosity ikhula. Izinhlobo zokuncibilika okushisayo aziphathwa nge-glyoxal ebusweni. Uma inani le-glyoxal likhulu, ukuhlakazeka kuzoba ngokushesha, kodwa i-viscosity izokhula kancane, futhi uma inani lincane, okuphambene nalokho kuzoba yiqiniso.
14. Liyini iphunga le-hydroxypropyl methylcellulose (HPMC)?
I-HPMC ekhiqizwa ngendlela ye-solvent isebenzisa i-toluene ne-isopropanol njengezincibilikisi. Uma ukugeza kungalungile kakhulu, kuzoba nephunga elisele.
15. Ungayikhetha kanjani i-hydroxypropyl methylcellulose (HPMC) efanelekile ngezinjongo ezahlukene?
Ukusetshenziswa kwempuphu ye-putty: izidingo ziphansi, i-viscosity ingu-100,000, kwanele, into ebalulekile ukugcina amanzi kahle. Ukusetshenziswa kwe-mortar: izidingo eziphakeme, i-viscosity ephezulu, i-150,000 ingcono. Ukusetshenziswa kwe-glue: imikhiqizo esheshayo ene-viscosity ephezulu iyadingeka.
16. Iyini igama eliyisibongo le-hydroxypropyl methylcellulose?
I-Hydroxypropyl methyl cellulose, isiNgisi: I-Hydroxypropyl Methyl Cellulose Isifinyezo: I-HPMC noma i-MHPC Igama elihlukile: i-hypromellose; I-Cellulose hydroxypropyl methyl ether; I-Hypromellose, I-Cellulose, i-2-hydroxypropylmethyl I-Cellulose ether. I-Cellulose hydroxypropyl methyl ether I-Hyprolose.
17. Ukusetshenziswa kwe-HPMC ku-putty powder, siyini isizathu samabhamuza ku-putty powder?
Ku-putty powder, i-HPMC idlala indima ezintathu zokuqina, ukugcinwa kwamanzi kanye nokwakhiwa. Ungahlanganyeli kunoma yikuphi ukusabela. Izizathu zamabhamuza: 1. Faka amanzi amaningi kakhulu. 2. Ingqimba engezansi ayomile, mane ukhuhle enye ingqimba phezulu, futhi kulula ukuyikhipha igwebu.
18. Iyini ifomula yempuphu ye-putty yezindonga zangaphakathi nezangaphandle?
Impuphu ye-putty yodonga lwangaphakathi: i-calcium esindayo engu-800KG, i-calcium yomlotha engu-150KG (i-starch ether, uhlaza oluhlanzekile, inhlabathi ye-Pengrun, i-citric acid, i-polyacrylamide, njll. ingangezwa ngokufanele)
Impuphu ye-putty yangaphandle: usimende 350KG i-calcium esindayo 500KG isihlabathi se-quartz 150KG impuphu ye-latex 8-12KG i-cellulose ether 3KG i-starch ether 0.5KG i-wood fibre 2KG
19. Uyini umehluko phakathi kwe-HPMC ne-MC?
I-MC iyi-methyl cellulose, eyenziwe nge-cellulose ether ngokwelapha ukotini ocwengekile nge-alkali, kusetshenziswa i-methane chloride njenge-etherification agent, futhi idlula ochungechungeni lwezimpendulo. Ngokuvamile, izinga lokushintsha liyi-1.6 ~ 2.0, kanti ukuncibilika nakho kuhlukile ngamazinga ahlukene okushintsha. Ingeye-non-ionic cellulose ether.
(1) Ukugcinwa kwamanzi kwe-methyl cellulose kuncike enanini layo lokwengeza, i-viscosity, ubuncane bezinhlayiya kanye nezinga lokuncibilika. Ngokuvamile, uma inani lokwengeza likhulu, ubuncane buncane, kanti i-viscosity inkulu, izinga lokugcinwa kwamanzi liphezulu. Phakathi kwazo, inani lokwengeza linomthelela omkhulu kakhulu esilinganisweni sokugcinwa kwamanzi, futhi izinga le-viscosity alilingani ngqo nezinga lezinga lokugcinwa kwamanzi. Izinga lokuncibilika lincike kakhulu ezingeni lokuguqulwa kobuso bezinhlayiya ze-cellulose kanye nobuncane bezinhlayiya. Phakathi kwama-ether e-cellulose angenhla, i-methyl cellulose kanye ne-hydroxypropyl methyl cellulose zinamazinga aphezulu okugcinwa kwamanzi.
(2) I-Methylcellulose iyancibilika emanzini abandayo, futhi kuzoba nzima ukuyincibilika emanzini ashisayo. Isixazululo sayo samanzi sizinzile kakhulu ebangeni le-pH=3~12. Ihambisana kahle nesitashi, i-guar gum, njll. kanye nama-surfactants amaningi. Lapho izinga lokushisa lifinyelela izinga lokushisa le-gelation, kwenzeka i-gelation.
(3) Izinguquko ekushiseni zizothinta kakhulu izinga lokugcina amanzi le-methyl cellulose. Ngokuvamile, uma izinga lokushisa liphakeme, kuba kubi kakhulu ukugcinwa kwamanzi. Uma izinga lokushisa le-mortar lidlula ama-40°C, ukugcinwa kwamanzi kwe-methyl cellulose kuzoncishiswa kakhulu, okuzothinta kakhulu ukwakhiwa kwe-mortar.
(4) I-Methyl cellulose inomthelela omkhulu ekwakhiweni nasekunamatheleni kwe-mortar. “Ukunamathela” lapha kubhekisela emandleni okunamathela azwakala phakathi kwethuluzi lokufaka isicelo somsebenzi kanye ne-substrate yodonga, okungukuthi, ukumelana nokusika kwe-mortar. Ukunamathela kuphakeme, ukumelana nokusika kwe-mortar kukhulu, futhi amandla adingekayo yizisebenzi enkambisweni yokusebenzisa nawo makhulu, futhi ukusebenza kokwakha kwe-mortar kuphansi. Ukunamathela kwe-Methyl cellulose kusezingeni eliphakathi emikhiqizweni ye-cellulose ether.
I-HPMC yi-hydroxypropyl methylcellulose, okuyi-ether exubile ye-cellulose engeyona i-ionic eyenziwe ngokotini ocolisisiwe ngemva kokuhlanganiswa kwe-alkali, kusetshenziswa i-propylene oxide kanye ne-methyl chloride njengezinto ezibangela i-etherification, kanye nochungechunge lwezimpendulo. Izinga lokushintshana ngokuvamile lingu-1.2 ~ 2.0. Izakhiwo zayo zihlukile ngenxa yezilinganiso ezahlukene zokuqukethwe kwe-methoxyl kanye nokuqukethwe kwe-hydroxypropyl.
(1) I-Hydroxypropyl methylcellulose incibilika kalula emanzini abandayo, futhi izobhekana nobunzima ekuncibilikeni emanzini ashisayo. Kodwa izinga lokushisa layo le-gelation emanzini ashisayo liphakeme kakhulu kunele-methyl cellulose. Ukuncibilika emanzini abandayo nakho kuthuthuke kakhulu uma kuqhathaniswa ne-methyl cellulose.
(2) Ukuqina kwe-hydroxypropyl methylcellulose kuhlobene nesisindo sayo sama-molecule, futhi uma isisindo sama-molecule sikhulu, kulapho ukuqina kwe-viscosity kuphakama khona. Izinga lokushisa lithinta nokuqina kwayo, njengoba izinga lokushisa likhuphuka, ukuqina kwe-viscosity kwehla. Kodwa-ke, ukuqina kwayo okuphezulu kunomphumela wokushisa ophansi kune-methyl cellulose. Isixazululo sayo sizinzile uma sigcinwe ekushiseni kwegumbi.
(3) I-Hydroxypropyl methylcellulose izinzile ku-asidi kanye ne-alkali, futhi isixazululo sayo samanzi sizinzile kakhulu ku-pH=2~12. I-Caustic soda kanye namanzi e-lime awanawo umthelela omkhulu ekusebenzeni kwayo, kodwa i-alkali ingasheshisa ukuncibilika kwayo futhi ikhulise i-viscosity yayo. I-Hydroxypropyl methylcellulose izinzile ku-salts ezivamile, kodwa lapho ukuhlushwa kwesisombululo sikasawoti kuphezulu, i-viscosity yesisombululo se-hydroxypropyl methylcellulose ivame ukwanda.
(4) Ukugcinwa kwamanzi kwe-hydroxypropyl methylcellulose kuncike enanini layo lokwengeza, i-viscosity, njll., futhi izinga layo lokugcinwa kwamanzi ngaphansi kwenani elifanayo lokwengeza liphakeme kunele-methyl cellulose.
(5) I-hydroxypropyl methylcellulose ingaxutshwa nama-polymer compounds ancibilika emanzini ukuze kwakheke isixazululo esifanayo nesinobuthi obuphezulu. Njenge-polyvinyl alcohol, i-starch ether, i-vegetable gum, njll.
(6) Ukunamathela kwe-hydroxypropyl methylcellulose ekwakhiweni kwe-mortar kuphakeme kunokwe-methylcellulose.
(7) I-hydroxypropyl methylcellulose inokumelana okungcono kwama-enzyme kune-methylcellulose, futhi isixazululo sayo cishe asikwazi ukuwohloka ngama-enzyme kune-methylcellulose.
20. Yini okufanele inakwe ekusetshenzisweni kwangempela kobudlelwano phakathi kwe-viscosity kanye nokushisa kwe-HPMC?
I-viscosity ye-HPMC ilingana ngokungalingani nezinga lokushisa, okungukuthi, i-viscosity iyanda njengoba izinga lokushisa lehla. I-viscosity yomkhiqizo esivame ukukhuluma ngawo ibhekisela kumphumela wokuhlolwa kwesisombululo sawo samanzi esingu-2% ekushiseni okungama-degrees Celsius angama-20.
Ekusetshenzisweni okungokoqobo, kufanele kuqashelwe ukuthi ezindaweni ezinomehluko omkhulu wokushisa phakathi kwehlobo nobusika, kunconywa ukusebenzisa i-viscosity ephansi ebusika, okuyinto evumelana kakhulu nokwakhiwa. Ngaphandle kwalokho, lapho izinga lokushisa liphansi, i-viscosity ye-cellulose izokwanda, futhi umuzwa wesandla uzoba nzima lapho kukhuhlwa.
I-viscosity ephakathi: 75000-100000 esetshenziswa kakhulu kwi-putty
Isizathu: ukugcina amanzi kahle
I-viscosity ephezulu: 150000-200000 Isetshenziswa kakhulu ku-polystyrene particle thermal insulation mortar impuphu yerabha kanye ne-vitrified microbead thermal insulation mortar.
Isizathu: I-viscosity iphezulu, i-mortar akulula ukuyiwa, iwa, futhi ukwakhiwa kwayo kuyathuthukiswa.
Kodwa ngokuvamile, uma i-viscosity iphakeme, kulapho ukugcinwa kwamanzi kuba ngcono khona. Ngakho-ke, uma sibheka izindleko, izimboni eziningi ze-dry powder mortar zithatha indawo ye-cellulose e-viscosity ephakathi nendawo nephansi (20000-40000) nge-cellulose e-viscosity ephakathi nendawo (20000-40000) ukuze kuncishiswe inani lokwengeza.
Isikhathi sokuthunyelwe: Novemba-18-2022