1. Yintoni eyona nto isetyenziswayo ye-hydroxypropyl methylcellulose (HPMC)?
——Impendulo: IHydroxypropyl methylcellulose isetyenziswa kakhulu kwizinto zokwakha, izinto zokwaleka, iintlaka zokwenziwa, iiseramikhi, amayeza, ukutya, amalaphu, ezolimo, izithambiso, icuba 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?
——Impendulo: I-HPMC inokohlulwa ibe uhlobo 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.
3. Ziziphi iindlela zokuchithwa kwe-hydroxypropyl methylcellulose (HPMC)?
——Impendulo: Indlela yokuchithwa kwamanzi ashushu: Ekubeni i-HPMC inganyibiliki emanzini ashushu, i-HPMC inokusasazwa ngokulinganayo kumanzi ashushu kwinqanaba lokuqala, ize inyibilike ngokukhawuleza xa ipholisa. 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 ushushu ube ngu-70 ° C, usasaze i-HPMC ngokwendlela ye-1), kwaye ulungiselele udaka lwamanzi ashushu; uze udibanise umlinganiselo oseleyo wamanzi abandayo kwi-slurry yamanzi ashushu, umxube wapholiswa emva kokuvuselela.
Indlela yokuxuba umgubo: xuba i-HPMC yomgubo kunye nesixa esikhulu sezinye izinto ezinomgubo, xuba ngokucokisekileyo kunye nomxube, uze wongeze amanzi ukuze unyibilike, emva koko i-HPMC inokunyibilika ngeli xesha ngaphandle kokudibanisa, kuba kukho i-HPMC encinci kuphela kuyo yonke into encinci. ikona Powder, iya kunyibilika ngokukhawuleza xa udibana namanzi. ——Umgubo weputty kunye nabavelisi bodaka basebenzisa le ndlela. [I-Hydroxypropyl methylcellulose (HPMC) isetyenziswa njenge-thickener kunye ne-arhente yokugcina amanzi kwi-putty powder mortar.
4. Indlela yokugweba umgangatho we-hydroxypropyl methylcellulose (HPMC) ngokulula kunye ne-intuitively?
——Impendulo: (1) Ubumhlophe: Nangona ubumhlophe bungakwazi ukugqiba 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 ngokubanzi kune-80 mesh kunye ne-100 mesh, kunye ne-120 mesh ingaphantsi. Uninzi lwe-HPMC eveliswe eHebei yi-80 mesh. Okukhona ukucoleka, xa sithetha ngokubanzi, kungcono. (3) Ukuhanjiswa kokukhanya: faka i-hydroxypropyl methylcellulose (HPMC) emanzini ukwenza i-colloid ebonakalayo, kwaye ujonge ukukhanya kwayo. Okukhona ukuhanjiswa kokukhanya, kungcono, kubonisa ukuba kukho izinto ezinganyibilikiyo kangako 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?
——Impendulo: Isixa se-HPMC esisetyenzisiweyo kwizicelo eziphathekayo siyahluka ngokuxhomekeka kwimozulu, ukushisa, umgangatho we-ash calcium 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; inani le-putty eYunnan lincinci, ngokubanzi i-3 kg ukuya kwi-4 kg, njl.
6. Yintoni i-viscosity efanelekileyo ye-hydroxypropyl methylcellulose (HPMC)?
——Impendulo: Ngokubanzi, i-yuan eyi-100,000 yanele kwiputty powder, kwaye iimfuno zodaka ziphezulu, kwaye i-yuan eyi-150,000 iyafuneka ukuze isetyenziswe 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)?
——Impendulo: Umxholo weHydroxypropyl kunye ne-viscosity, uninzi lwabasebenzisi banenkxalabo malunga nezi zalathisi zibini. Abo banomxholo ophezulu we-hydroxypropyl ngokubanzi banokugcinwa kwamanzi okungcono. Lowo une-viscosity ephezulu unokugcinwa kwamanzi okungcono, ngokumalunga (kungekhona ngokupheleleyo), kwaye lowo une-viscosity ephezulu isetyenziswe kangcono kwi-samente mortar.
8. Ziziphi ezona zixhobo ziphambili ze-hydroxypropyl methylcellulose (HPMC)?
—— Impendulo: 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?
--Impendulo: 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, ugaye ube ngumgubo, kwaye uyisebenzise kwakhona, ayiyi kusebenza ngenxa yokuba izinto ezintsha (i-calcium carbonate) zenziwe. ) nayo. Amacandelo aphambili omgubo we-ash calcium zezi: umxube weCa(OH)2, iCaO kunye nesixa esincinci seCaCO3, CaO+H2O=Ca(OH)2—Ca(OH)2+CO2=CaCO3↓+H2O Ash calcium emanzini nasemoyeni Ngaphantsi kwesenzo se-CO2, i-calcium carbonate yenziwe, ngelixa i-HPMC igcina amanzi kuphela, incedisa ukusabela okungcono kwe-ash calcium, kwaye ayithathi nxaxheba kuyo nayiphi na impendulo ngokwayo.
10. I-HPMC yi-ether ye-cellulose engekho i-ionic, ngoko 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 ezihlawuliswayo, kodwa zikhona ngendlela yeemolekyuli.
11. Yintoni ubushushu bejeli ye-hydroxypropyl methylcellulose enxulumene nayo?
——Impendulo: Ubushushu bejeli ye-HPMC inxulumene nomxholo wayo we-methoxy. Okukhona usezantsi umxholo we-methoxy↓, kokukhona uphezulu ubushushu bejeli↑.
12. Ngaba kukho ubudlelwane phakathi kokuhla kwe-putty powder kunye ne-HPMC?
--Impendulo: Ukulahlekelwa ngumgubo we-putty powder kuhambelana ikakhulu nomgangatho we-ash calcium, kwaye ayinanto encinci ne-HPMC. Umxholo ophantsi we-calcium we-gray calcium kunye nomlinganiselo ongafanelekanga we-CaO kunye ne-Ca (OH) i-2 kwi-gray calcium iya kubangela ukulahleka kwepowder. Ukuba inento yokwenza ne-HPMC, ngoko ukuba i-HPMC inokugcinwa kwamanzi okungahambi kakuhle, kuya kubangela ukulahlekelwa ngumgubo. Ngezizathu ezithile, nceda ujonge kumbuzo 9.
13. Uthini umahluko phakathi kohlobo olukhawulezayo lwamanzi abandayo kunye nohlobo olunonyibiliko olushushu lwe-hydroxypropyl methylcellulose kwinkqubo yokuvelisa?
——Impendulo: Uhlobo lwangoko nangoko lwamanzi abandayo lweHPMC lunyangwa ngomphezulu ngeglyoxal. Isasazeka ngokukhawuleza emanzini abandayo, kodwa ayinyibiliki ngokwenene. Ichithwa kuphela xa i-viscosity inyuka. Iintlobo ezishushu ezinyibilikayo aziphathwa ngomphezulu nge-glyoxal. Ukuba inani le-glyoxal likhulu, ukusabalalisa kuya kukhawuleza, kodwa i-viscosity iya kwanda ngokukhawuleza, kwaye ukuba isixa sincinci, okuchaseneyo kuya kuba yinyani.
14. Yintoni ivumba le-hydroxypropyl methylcellulose (HPMC)?
——Impendulo: I-HPMC eveliswe yindlela yokunyibilikisa isebenzisa i-toluene kunye ne-isopropanol njengezinyibilikisi. Ukuba ukuhlamba akulunganga kakhulu, kuya kubakho ivumba elishiyekileyo.
15. 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.
16. Yintoni igama le-hydroxypropyl methylcellulose?
——Impendulo: Hydroxypropyl Methyl Cellulose, IsiNgesi: Hydroxypropyl Methyl Cellulose Isifinyezo: HPMC okanye MHPC Alias: Hypromellose; i-cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose, 2-hydroxypropylmethyl Cellulose ether. I-Cellulose hydroxypropyl methyl ether Hyprolose.
17. Ukusetyenziswa kwe-HPMC kwi-putty powder, yintoni isizathu se-bubbles kwi-putty powder?
--Impendulo: Kwi-putty powder, i-HPMC idlala iindima ezintathu zokuqina, ukugcinwa kwamanzi kunye nokwakhiwa. Musa ukuthatha inxaxheba kuzo naziphi na iimpendulo. Izizathu zamaqamza: 1. Beka amanzi amaninzi kakhulu. 2. Umaleko ongezantsi awusomile, vele ukhuphe enye ingqimba phezulu, kwaye kulula ukuphosa amagwebu.
18. Iyintoni ifomyula ye-putty yeendonga zangaphakathi nangaphandle?
——Impendulo: I-Putty powder yeendonga zangaphakathi: i-calcium enzima 800KG grey calcium 150KG (i-starch ether, eluhlaza ecocekileyo, i-pentagentite, i-citric acid, i-polyacrylamide, njl. inokudibaniswa ngokufanelekileyo)
I-putty eludongeni lwangaphandle: i-samente 350KG i-calcium enzima 500KG isanti yequartz 150KG latex powder 8-12KG i-cellulose ether 3KG isitashi se-ether 0.5KG ifayibha yomthi 2KG
19. Yintoni umahluko phakathi kwe-HPMC kunye ne-MC?
——Impendulo: I-MC yi-methyl cellulose, eyenziwe nge-cellulose ether ngokuphatha i-cotton ecocekileyo nge-alkali, isebenzisa i-methane chloride njenge-etherification agent, kwaye ihamba ngeendlela zokuphendula. Ngokubanzi, iqondo lokutshintsha liyi-1.6 ~ 2.0, kwaye ukunyibilika kwahluka ngokwamanqanaba okutshintsha. yeye-non-ionic cellulose ether.
(1) Ukugcinwa kwamanzi kwi-methyl cellulose kuxhomekeke kwisixa sokongeza, i-viscosity, i-particle fineness kunye neqondo lokuchithwa. Ngokuqhelekileyo, ukuba isixa esongezelelweyo sikhulu, i-fineness incinci, kwaye i-viscosity inkulu, izinga lokugcinwa kwamanzi liphezulu. Phakathi kwabo, inani lokongezelela linempembelelo enkulu kwizinga lokugcinwa kwamanzi, kwaye inqanaba le-viscosity alilingani ngokuthe ngqo kwinqanaba lokugcinwa kwamanzi. Izinga lokuchithwa ikakhulu lixhomekeke kwiqondo lokuguqulwa komphezulu we-cellulose particleness kunye ne-particle fineness. Phakathi kwezi zingentla ze-cellulose ethers, i-methyl cellulose kunye ne-hydroxypropyl methyl cellulose zinezinga eliphezulu lokugcina amanzi.
(2) I-Methylcellulose iyanyibilika emanzini abandayo, kwaye kuya kuba nzima ukuyinyibilika emanzini ashushu. Isisombululo saso samanzi sizinzile kakhulu kuluhlu lwe-pH = 3 ~ 12. Inokuhambelana kakuhle nestatshi, i-guar gum, njl. kunye nee-surfactants ezininzi. Xa iqondo lokushisa lifikelela kwiqondo lokushisa, i-gelation iyenzeka.
(3) Utshintsho kwiqondo lobushushu luya kuchaphazela kakhulu izinga lokugcinwa kwamanzi kwi-methyl cellulose. Ngokuqhelekileyo, okukhona ubushushu buphezulu, kokukhona ukugcinwa kwamanzi kubi. Ukuba ubushushu bomdaka budlula i-40 ° C, ukugcinwa kwamanzi kwe-methyl cellulose kuya kuncitshiswa kakhulu, kuchaphazela kakhulu ukwakhiwa kodaka.
(4) I-Methyl cellulose inempembelelo ebalulekileyo ekwakhiweni nasekunamatheleni komdaka. “Ukuncamathisela” apha kubhekisa kumandla okuncamathelisa okuvakala phakathi kwesixhobo sokufaka isicelo somsebenzi kunye nenxalenye yodonga, oko kukuthi, ukuxhathisa kokucheba kodaka. I-adhesiveness iphezulu, ukuxhathisa i-shear yodaka kukhulu, kwaye amandla afunwa ngabasebenzi kwinkqubo yokusetyenziswa nawo mkhulu, kwaye ukusebenza kokwakhiwa kodaka kubi. I-Methyl cellulose adhesion ikwinqanaba eliphakathi kwiimveliso ze-cellulose ether.
I-HPMC yi-hydroxypropyl methylcellulose, eyi-non-ionic cellulose exutywe ne-ether eyenziwe kwikotoni esulungekileyo emva kwe-alkalization, isebenzisa i-propylene oxide kunye ne-methyl chloride njengee-etherification agents, kunye noluhlu lweempendulo. Iqondo lokutshintshwa ngokubanzi yi-1.2 ~ 2.0. Iimpawu zayo zihluke ngenxa yemilinganiselo eyahlukeneyo yomxholo we-methoxyl kunye nomxholo we-hydroxypropyl.
(1) IHydroxypropyl methylcellulose inyibilika ngokulula emanzini abandayo, kwaye iya kudibana nobunzima ekunyibilikeni kumanzi ashushu. Kodwa ubushushu bayo be-gelation emanzini ashushu buphezulu kakhulu kune-methyl cellulose. Ukunyibilika kumanzi abandayo kuphuculwe kakhulu xa kuthelekiswa ne-methyl cellulose.
(2) I-Hydroxypropyl methylcellulose izinzile kwi-asidi kunye ne-alkali, kwaye isisombululo sayo samanzi sizinzileyo kakhulu kwi-pH = 2 ~ 12. I-Caustic soda kunye namanzi e-lime anempembelelo encinci ekusebenzeni kwayo, kodwa i-alkali inokukhawulezisa ukuchithwa kwayo kunye nokwandisa i-viscosity yayo. I-Hydroxypropyl methylcellulose izinzile kwiityuwa eziqhelekileyo, kodwa xa ukuxinwa kwesisombululo setyuwa kuphezulu, i-viscosity ye-hydroxypropyl methylcellulose isisombululo ivame ukunyuka.
(3) I-Hydroxypropyl methylcellulose inokuxutywa kunye ne-polymer compounds e-soluble yamanzi ukuze yenze isisombululo esifanayo kunye ne-viscosity ephezulu. Okufana ne-polyvinyl alcohol, i-starch ether, i-gum yemifuno, njl.
(4) I-adhesion ye-hydroxypropyl methylcellulose kwisakhiwo sodaka iphezulu kune-methylcellulose.
(5) I-Hydroxypropyl methylcellulose inokumelana ne-enzyme engcono kune-methylcellulose, kwaye isisombululo sayo asikwazi ukuthotywa yi-enzymes kune-methylcellulose.
20. Yintoni ekufuneka ihlawulwe ingqalelo kwisicelo sangempela sobudlelwane phakathi kwe-viscosity kunye nokushisa kwe-hydroxypropyl methylcellulose?
——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.
Kodwa xa sithetha ngokubanzi, okukhona i-viscosity iphezulu, kokukhona kungcono ukugcinwa kwamanzi. Ngoko ke, ngokuqwalasela indleko, iifektri ezininzi zodaka ezinomileyo zithatha indawo ye-cellulose ye-viscosity ephakathi kunye nephantsi (20000-40000) kunye ne-medium-viscosity cellulose (20000-40000) ukunciphisa inani lokongezwa.
Ixesha lokuposa: Nov-17-2022