I-Hydroxypropyl methyl cellulose iingxaki eziqhelekileyo

1, yintoni eyona nto isetyenziswayo ye-hydroxypropyl methyl cellulose (HPMC)?

HPMCisetyenziswa kakhulu kwizinto zokwakha, iingubo, iintlaka zokwenziwa, iiseramikhi, amayeza, ukutya, amalaphu, ezolimo, izithambiso, icuba kunye namanye amashishini. I-HPMC inokohlulwa ibe: ibakala lokwakha, ibakala lokutya kunye nebakala lezonyango ngokusetyenziswa. Okwangoku, ininzi yebakala lokwakhiwa kwasekhaya, kwibakala lokwakha, i-putty powder dosage inkulu, malunga ne-90% isetyenziselwa ukwenza i-putty powder, enye isetyenziselwa ukwenza udaka lwesamente kunye neglue.

I-2, i-hydroxypropyl methyl cellulose (HPMC) yahlulwe ibe ngamaqela amaninzi, yintoni umehluko ekusebenziseni kwayo?

I-HPMC inokohlulwa ibe yisisombululo-uhlobo olukhawulezileyo kunye nohlobo lwesisombululo esishushu, iimveliso zohlobo lwesisombululo esikhawulezileyo, zisasazwe ngokukhawuleza kumanzi abandayo, zinyamalale emanzini, ngeli xesha ulwelo alunayo i-viscosity, kuba i-HPMC isasazeke nje emanzini, akukho kupheliswa ngokwenene. Malunga nemizuzu emi-2, i-viscosity yolwelo ikhula kancinci, yenze i-colloid ebonakalayo ebonakalayo. Iimveliso ezishushu ezinyibilikayo, kumanzi abandayo, zinokusasazwa ngokukhawuleza emanzini ashushu, zinyamalale emanzini ashushu, xa ubushushu buhla kwiqondo elithile lobushushu, i-viscosity ibonakala kancinci, de kube yi-colloid ebonakalayo ebonakalayo. Isisombululo esishushu singasetyenziselwa kuphela kwi-putty powder kunye nodaka, kwi-glue ye-liquid kunye nepeyinti, kuya kubakho i-phenomenon yeqela, ayinakusetyenziswa. Imodeli ye-SOLUTION ekhawulezileyo, UDIDI LWESICELO LUMBALWA NGABANZI, EKUKHANWENI NGUMXHOLO NOMDA NOMNTWANA, KUNYE NEGLUE YONYWELE KUNYE NENXWEBEKO, ZONKE ZINOKUSEBENZA, NGAPHANDLE KOMTHETHO.

I-3, i-hydroxypropyl methyl cellulose (HPMC) iindlela zokunyibilika zinezo?

Indlela yokuchithwa kwamanzi ashushu: Ngenxa yokuba i-HPMC ayinyibiliki emanzini ashushu, ngoko ke i-HPMC yangethuba inokusasazwa ngokulinganayo emanzini ashushu, emva koko inyibilikiswe ngokukhawuleza xa ipholile, iindlela ezimbini eziqhelekileyo zichazwe ngolu hlobo lulandelayo:

1) Beka ubungakanani obufunekayo bamanzi ashushu kwisikhongozeli kwaye ufudumale ukuya kuma 70℃. Kancinci ukongeza i-hydroxypropyl methylcellulose phantsi kokuvuselela okucothayo, i-HPMC yaqala ukudada phezu kwamanzi, kwaye ngokuthe ngcembe yenza i-slurry, phantsi kokupholisa ukupholisa.

2), yongeza inani elifunekayo le-1/3 okanye i-2/3 yamanzi kwi-container, kunye nobushushu kwi-70 ℃, ngokwendlela ye-1), ukusabalalisa kwe-HPMC, ukulungiswa kodaka lwamanzi ashushu; Emva koko faka inani eliseleyo lamanzi abandayo kwi-slurry eshushu, ugxobhoze kwaye upholise umxube.

Indlela yokuxuba umgubo: i-HPMC yomgubo kunye nenani elikhulu lezinye izithako ze-powdery eziphathekayo, ezixutywe ngokucokisekileyo kunye ne-blender, emva kokuba ugalele amanzi ukunyibilika, ngoko i-HPMC inokunyibilika ngeli xesha, kodwa ingabikho ukubumbana, kuba ikona nganye encinci, kuphela i-HPMC encinci yomgubo. , amanzi aya kunyibilika ngoko nangoko. – Umgubo wePutty kunye namashishini okuvelisa udaka asebenzisa le ndlela. IHydroxypropyl methyl cellulose (HPMC) isetyenziswa njenge-agent etyebisayo kunye ne-agent egcina amanzi kwiputty powder mortar.

I-4, ilula kangakanani kwaye intuitive ukumisela umgangatho we-hydroxypropyl methyl cellulose (HPMC)?

(1) ubumhlophe: nangona ubumhlophe bungenako ukugqiba ukuba i-HPMC ilula ukuyisebenzisa, kwaye ukuba yongezwa kwinkqubo yokuvelisa i-agent emhlophe, iya kuchaphazela umgangatho wayo. Nangona kunjalo, iimveliso ezilungileyo kakhulu zimhlophe.

(2) ukucoleka: HPMC ubucukubhede ngokubanzi 80 umnatha kunye 100 umnatha, 120 injongo ngaphantsi, Hebei HPMC ubukhulu becala 80 inanatha, i fineness ukucoleka, ngokubanzi ngcono.

(3) ukuhanjiswa: i-hydroxypropyl methyl cellulose (HPMC) emanzini, ukubunjwa kwe-colloid ebonakalayo, jonga ukuhanjiswa kwayo, ukugqithiswa okukhulu, kungcono, izinto ezingenakunyibilika ngaphakathi. Ukungena kwe-reactor ethe nkqo ngokuqhelekileyo kulungile, i-reactor ethe tye imbi kakhulu, kodwa ayikwazi ukubonisa ukuba umgangatho wemveliso ye-reactor ethe nkqo ungcono kunalowo wemveliso yereactor ethe tye, umgangatho wemveliso umiselwa yimiba emininzi.

(4) umxhuzulane othile: okukhona umkhulu umxhuzulane othile, kokukhona unzima ngakumbi. Kubaluleke kakhulu, ngokubanzi ngenxa yokuba umxholo we-hydroxypropyl uphezulu, umxholo we-hydroxypropyl uphezulu, ngoko ukugcinwa kwamanzi kungcono.

I-5, i-hydroxypropyl methyl cellulose (HPMC) kwisixa se-putty powder?

I-HPMC ekusetyenzisweni kwangempela kwe-dosage, ngokusingqongileyo kwemozulu, ubushushu, umgangatho we-calcium ash ash, i-putty powder formula kunye "neemfuno zabathengi zomgangatho", kwaye zihluke. Ngokuqhelekileyo, phakathi kweekhilogram ezine ukuya ezintlanu. Umzekelo: i-Beijing putty powder, ininzi ibeka i-5 kg; EGuizhou, uninzi lwabo luyi-5 kg ​​ehlotyeni kunye ne-4.5 kg ebusika. Ubungakanani beYunnan buncinci, ngokubanzi 3 kg -4 kg njalo njalo.

6, i-hydroxypropyl methyl cellulose (HPMC) ingakanani i-viscosity efanelekileyo?

UKHANGELEKILEYO NGUMNTWANA UPHOWU JIKELELE 100 WAMAWAKA KULUNGILE, IMFUNEKO EMORTAR IMDE KANYE, UFUNA 150 IWAKA LOKUSEBENZA. Ngaphezu koko, eyona ndima ibalulekileyo ye-HPMC kukugcina amanzi, kulandele ukutyeba. Kwi-putty powder, ukuba nje ukugcinwa kwamanzi kulungile, i-viscosity iphantsi (i-7-80 lamawaka), kunokwenzeka kwakhona, ngokuqinisekileyo, i-viscosity inkulu, ukugcinwa kwamanzi okuhambelanayo kubhetele, xa i-viscosity ingaphezulu. I-100 lamawaka, i-viscosity inefuthe elincinci ekugcinweni kwamanzi.

I-7, i-hydroxypropyl methyl cellulose (HPMC) zeziphi iimpawu eziphambili zobugcisa?

Umxholo weHydroxypropyl kunye ne-viscosity, abaninzi abasebenzisi banenkxalabo ngezi zikhombisi zimbini. Umxholo weHydroxypropyl uphezulu, ukugcinwa kwamanzi ngokuqhelekileyo kungcono. I-Viscosity, ukugcinwa kwamanzi, isalamane (kodwa ayikho ngokupheleleyo) nayo ingcono, kunye ne-viscosity, ngodaka lwesamente olungcono ukusebenzisa ezinye.

8, hydroxypropyl methyl cellulose (HPMC) eyona imathiriyeli ekrwada yintoni?

IHydroxypropyl methyl cellulose (HPMC) eyona mveliso iphambili: umqhaphu osulungekileyo, ikloromethane, ipropylene oxide, ezinye izinto ezisetyenziswayo, iitafile zealkali, iasidi, itoluene, utywala isopropyl njalo njalo.

I-9, i-HPMC ekusebenziseni i-putty powder, yintoni indima ephambili, nokuba yi-chemistry?

I-HPMC kwi-putty powder, ukuqina, ukugcinwa kwamanzi kunye nokwakhiwa kweendima ezintathu. Ukujiya: Iselulosi inokujiya ukuze idlale ukunqunyanyiswa, ukuze isisombululo sigcine iyunifomu phezulu nasezantsi indima enye, ukuqukuqela anti ejingayo. Ukugcinwa kwamanzi: yenza iputty powder yome kancinci, i-axiliary ash calcium reaction phantsi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inefuthe lokuthambisa, inokwenza i-putty powder inokwakhiwa okulungileyo. I-HPMC ayithathi nxaxheba kuyo nayiphi na intshukumo yeekhemikhali, idlala indima encedisayo kuphela. I-putty powder eyongeziweyo amanzi, eludongeni, i-chemical reaction, kuba kukho isizukulwana sezinto ezintsha, i-putty powder eludongeni ehla eludongeni, igaywe ibe ngumgubo, kwaye isetyenziswe, ayisekho, kuba iye yakha i-putty. izinto ezintsha (calcium carbonate). Amacandelo aphambili egrey calcium powder ngala: Ca(OH)2, CaO kunye nentwana encinci yeCaCO3 mix, CaO+H2O=Ca(OH)2 – Ca(OH)2+CO2=CaCO3↓+H2O calcium ash emanzini. kunye nomoya phantsi kwesenzo CO2, ukubunjwa calcium carbonate, kunye HPMC kuphela ukugcinwa kwamanzi, ancedisayo calcium ash reaction engcono, eyakhe akazange inxaxheba kuyo nayiphi na impendulo.

10, HPMC non-ionic cellulose ether, ngoko yintoni non-ionic?

Ngokubanzi, i-nonionic yinto engenzi ionize emanzini. Ionization yinkqubo apho i-electrolyte idityaniswa ukuba ibe yi-ion ehlawulwa ngokukhululekileyo kwi-solvent ethile, njengamanzi okanye utywala. Ngokomzekelo, i-sodium chloride (i-NaCl), ityuwa esiyidla yonke imihla, inyibilika emanzini kwaye i-ionizes ukuvelisa i-sodium ions yamahhala (Na +) ehlawuliswa kakuhle kunye ne-chloride ions (Cl) ehlawuliswa kakubi. Ngamanye amazwi, i-HPMC emanzini ayidibanisi kwii-ion ezihlawuliswayo, kodwa zikhona njengeemolekyuli.

11, i-hydroxypropyl methylcellulose gel ubushushu kwaye yintoni ehambelana nayo?

Ubushushu bejeli ye-HPMC inxulumene nomxholo wayo we-methoxy, i-methoxy ephantsi umxholo we-methoxy ↓, iphezulu i-gel yokushisa ↑.

12. Ngaba kukho ubudlelwane phakathi kwe-putty powder kunye ne-HPMC?

I-Putty powder powder kunye nomgangatho we-calcium unobudlelwane obukhulu, kwaye i-HPMC ayinalo ubudlelwane obuninzi. Umxholo ophantsi we-calcium we-calcium kunye nomlinganiselo we-CaO, i-Ca (OH) 2 kwi-calcium ash ayifanelekanga, iya kubangela ukuhla kwepowder. Ukuba inento yokwenza ne-HPMC, ke ukugcinwa kwamanzi kwe-HPMC kubi, kuya kubangela ukuhla komgubo. Ngezizathu ezithile, nceda ujonge umbuzo 9.

I-13, i-hydroxypropyl methylcellulose uhlobo olunyibilikayo lwamanzi abandayo kunye nohlobo olushushu olunyibilikayo kwinkqubo yokuvelisa, yintoni umahluko?

Uhlobo olunyibilikayo lwe-HPMC lwamanzi abandayo lusemva konyango lomphezulu we-glyoxal, emanzini abandayo asasazeke ngokukhawuleza, kodwa anganyibiliki ngokwenene, i-viscosity phezulu, iyanyibilika. Uhlobo olunyibilikayo lobushushu aluzange luphathwe phezulu nge-glyoxal. Umthamo we-glyoxal mkhulu, ukusabalalisa ngokukhawuleza, kodwa i-viscosity iyacotha, umthamo uncinci, ngokuchaseneyo.

14, i-hydroxypropyl methyl cellulose (HPMC) inevumba lento eyenzekayo?

I-HPMC eveliswa yindlela yokunyibilikisa yenziwe ngetoluene kunye ne-isopropyl alcohol njengesinyibilikisi. Ukuba ukuhlamba akukuhle kakhulu, kuya kubakho incasa eseleyo.

I-15, ukusetyenziswa okuhlukeneyo, indlela yokukhetha i-hydroxypropyl methyl cellulose (HPMC) efanelekileyo?

ISICELO SE-putty powder: imfuno iphantsi, i-viscosity yi-100 lamawaka, ilungile, into ebalulekileyo kukugcina amanzi angcono. Ukusetyenziswa komdaka: imfuno iphezulu, imfuno i-viscosity ephezulu, i-150 lamawaka kufuneka ibe ngcono. Ukusetyenziswa kweglue: kufuneka iimveliso ezikhawulezayo, i-viscosity ephezulu.

16, i-hydroxypropyl methylcellulose yintoni isibizo?

Hydroxypropyl Methyl Cellulose, IsiNgesi: Hydroxypropyl Methyl Cellulose isishunqulelo: HPMC okanye MHPC alias: Hydroxypropyl Methyl Cellulose; i-cellulose hydroxypropyl methyl ether; I-Cellulose hydroxypropyl Methyl ether Hypromellose, 2-hydroxypropylmethyl Cellulose ether. I-Cellulose hydroxypropyl Methyl ether Hyprolose.

I-17, i-HPMC ekusebenziseni i-putty powder, i-putty powder bubble sisiphi isizathu?

I-HPMC kwi-putty powder, ukuqina, ukugcinwa kwamanzi kunye nokwakhiwa kweendima ezintathu. Ukungathathi nxaxheba kuyo nayiphi na impendulo. Isizathu samaqamza: 1, amanzi abeke kakhulu. 2, umzantsi awomile, phezulu kwaye ukhuhle umaleko, kwakhona kulula ukuqabhuka.

18. I-putty powder formula yeendonga zangaphakathi nangaphandle?

I-putty powder yodonga lwangaphakathi: 800KG ye-calcium enzima kunye ne-150KG ye-calcium engwevu (isitashi se-ether, eluhlaza ococekileyo, umhlaba we-peng, i-citric acid kunye ne-polyacrylamide inokongezwa ngokufanelekileyo)

Umphandle eludongeni putty umgubo: isamente 350KG enzima calcium 500KG quartz isanti 150KG latex umgubo 8-12kg cellulose etere 3KG isitatshi ether 0.5kg iinkuni ifayibha 2KG

19. Yintoni umahluko phakathi kwe-HPMC kunye ne-MC?

I-MC yi-methyl cellulose, umqhaphu osulungekileyo emva konyango lwe-alkali, kunye ne-methane chloride njenge-etherification agent, ngoluhlu lweempendulo ukwenza i-cellulose ether. Ngokuqhelekileyo, iqondo lokutshintshwa yi-1.6 ~ 2.0, kwaye ukunyibilika kuyahluka kunye neqondo lokutshintshwa. Yi-ether ye-cellulose engeyiyo ionic.

(1) Ukugcinwa kwamanzi kwe-methyl cellulose kuxhomekeke kwisixa sayo sokongeza, i-viscosity, i-particle fineness kunye nesantya sokuchithwa. Ngokuqhelekileyo yongeza inani elikhulu, ukucolwa okuncinci, i-viscosity, izinga eliphezulu lokugcinwa kwamanzi. Phakathi kwabo, inani lokongezwa kwinqanaba lokugcinwa kwamanzi linempembelelo enkulu, i-viscosity kunye nenqanaba lokugcinwa kwamanzi alihambelani nobudlelwane. Isantya sokuchithwa sixhomekeke ikakhulu kwiqondo lokuguqulwa komphezulu kunye ne-particle fineness yamasuntswana e-cellulose. Kwi-ether ye-cellulose engentla, i-methyl cellulose kunye ne-hydroxypropyl methyl cellulose izinga lokugcinwa kwamanzi liphezulu.

(2) I-Methyl cellulose inokuchithwa kumanzi abandayo, amanzi ashushu adibeneyo aya kuhlangabezana nobunzima, isisombululo saso samanzi kwi-pH = 3 ~ 12 uluhlu luzinzile kakhulu. Inokuhambelana kakuhle nestatshi, i-guanidine gum kunye nee-surfactants ezininzi. I-Gelation iyenzeka xa iqondo lokushisa lifikelela kwiqondo lokushisa.

(3) Ukutshintsha kweqondo lobushushu kuyakuchaphazela kakhulu izinga lokugcinwa kwamanzi kwi-methyl cellulose. Ngokuqhelekileyo, okukhona ubushushu buphezulu, kokukhona ukugcinwa kwamanzi kubi. Ukuba ubushushu bodaka bungaphezulu kwe-40℃, ukugcinwa kwamanzi kwi-methyl cellulose kuya kuba kubi kakhulu, kuchaphazele ngokunzulu ukwakhiwa kodaka.

(4) I-Methyl cellulose inefuthe elicacileyo ekwakhiweni nasekubambeleleni kodaka. Apha, "ukunamathela" kubhekisela kumandla okunamathela avakalelwa phakathi kwesixhobo sokusetyenziswa komsebenzi kunye ne-substrate eludongeni, oko kukuthi, ukuxhathisa kwe-shear yodaka. Ipropathi yokunamathela inkulu, ukuxhathisa kwe-shear yodaka kukhulu, kwaye amandla afunwa ngabasebenzi kwinkqubo yokusetyenziswa nawo mkhulu, ngoko ke ipropati yokwakhiwa kodaka ihluphekile. Kwiimveliso ze-cellulose ether, i-methyl cellulose adhesion ikwinqanaba eliphakathi.

I-HPMC ye-hydroxypropyl methyl cellulose, yenziwe ngekotoni esulungekileyo emva konyango lwe-alkalization, kunye ne-propylene oxide kunye ne-chloromethane njenge-agent etherifying, ngoluhlu lweempendulo kwaye zenziwe nge-non-ionic cellulose exutywe i-ether. Isidanga sokutshintsha ngokuqhelekileyo yi-1.2 ~ 2.0. Iimpawu zayo zichaphazelekayo ngumlinganiselo we-methoxy content kunye nomxholo we-hydroxypropyl.

(1) i-hydroxypropyl methyl cellulose enyibilikayo emanzini abandayo, amanzi ashushu anyibilikisiweyo aya kudibana nobunzima. Kodwa ubushushu bayo be-gelation emanzini ashushu buphezulu kakhulu kune-methyl cellulose. I-solubility ye-methyl cellulose emanzini abandayo nayo iphuculwe kakhulu.

(2) i-viscosity ye-hydroxypropyl methyl cellulose inxulumene nobunzima bayo bemolekyuli, kwaye ubunzima bemolekyuli enkulu yi-viscosity ephezulu. Ubushushu buya kuchaphazela i-viscosity yayo, ukunyuka kweqondo lokushisa, i-viscosity iyancipha. Nangona kunjalo, i-viscosity yobushushu obuphezulu isezantsi kune-methyl cellulose. Isisombululo sizinzile xa sigcinwe kwiqondo lokushisa.

(3) i-hydroxypropyl methyl cellulose izinzile kwi-asidi kunye ne-alkali, kwaye isisombululo sayo samanzi sizinzile kakhulu kuluhlu lwe-pH = 2 ~ 12. I-Caustic soda kunye namanzi e-lime ayinayo impembelelo enkulu kwiipropati zayo, kodwa i-alkali inokukhawulezisa izinga lokuchithwa kwayo kunye nokuphucula i-viscosity yepini. I-Hydroxypropyl methyl cellulose inozinzo kwiityuwa ngokubanzi, kodwa xa ukuxinwa kwesisombululo setyuwa kuphezulu, i-viscosity yesisombululo se-hydroxypropyl methyl cellulose ithande ukunyuka.

(4) Ukugcinwa kwamanzi kwe-hydroxypropyl methyl cellulose kuxhomekeke kwisixa sokongezwa kwayo, i-viscosity, njl., umlinganiselo ofanayo wezinga lokugcinwa kwamanzi liphezulu kune-methyl cellulose.

(5) i-hydroxypropyl methyl cellulose inokuxutywa kunye neekhompawundi ze-polymer ezinyibilikayo emanzini ukuze zibe yinto efanayo, isisombululo esiphezulu se-viscosity. Okufana ne-polyvinyl alcohol, i-ether yesitatshi, itshungama yesityalo njalo njalo.

(6) Ukunamathela kwe-hydroxypropyl methyl cellulose kulwakhiwo lodaka kuphezulu kune-methyl cellulose.

(7) i-hydroxypropyl methyl cellulose inokumelana ne-enzymatic engcono kune-methyl cellulose, kwaye ukuba nokwenzeka kokuthotywa kwe-enzymatic yesisombululo sayo kuphantsi kune-methyl cellulose.

Yintoni ekufuneka ihlawulwe kwisicelo esisebenzayo sobudlelwane phakathi kwe-viscosity kunye nobushushu be-HPMC?

I-viscosity ye-HPMC ihambelana ngokungafaniyo neqondo lokushisa, oko kukuthi, i-viscosity iyanda ngokuhla kweqondo lokushisa. Xa sithetha malunga ne-viscosity yemveliso, sithetha umphumo wokulinganisa isisombululo sayo se-2% samanzi kwiqondo lokushisa lama-20 degrees Celsius.

Kwisicelo esisebenzayo, kwiindawo ezinomahluko omkhulu weqondo lokushisa phakathi kwehlobo kunye nobusika, ingqwalasela kufuneka ihlawulwe kwisincomo sokusebenzisa i-viscosity ephantsi kakhulu ebusika, ehambelana nokwakhiwa. Ngaphandle koko, xa iqondo lokushisa liphantsi, i-viscosity ye-cellulose iya kwanda, xa i-scraping, ivakalelwa iya kuba nzima.

I-viscosity ephakathi : 75000-100000 ikakhulu isetyenziselwa i-putty

Isizathu: ukugcinwa kakuhle kwamanzi

I-viscosity ephezulu :150000-200000 isetyenziswa ikakhulu kumasuntswana e-polystyrene ukufakwa kwe-thermal udaka lomgubo kunye namaso eglasi udaka lokufakelwa kwe-thermal.

Isizathu: i-viscosity ephezulu, udaka alulula ukulahla, ukuhamba okuxhoma, ukuphucula ukwakhiwa.

Kodwa xa sithetha ngokubanzi, okukhona i-viscosity iphezulu, kuya kuba ngcono ukugcinwa kwamanzi, ngoko ke iifektri ezininzi zodaka ezomileyo ziqwalasela iindleko, kunye neselulosi ye-viscosity ephakathi (75,000-100000) yokubuyisela i-viscosity cellulose ephantsi (20,000-40000) ukunciphisa inani le-viscosity cellulose. ukongeza.