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 ngokukhawuleza, zichithwa ngokukhawuleza emanzini abandayo, ziphela emanzini, ngeli xesha ulwelo awunalo i-viscosity, kuba i-HPMC ichithwa nje emanzini, akukho ukutshatyalaliswa kokwenene. 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 kokugalela amanzi ukunyibilika, ngoko i-HPMC inokunyibilika ngeli xesha, kodwa ingabi yimbumbano, kuba ikona nganye encinci, kuphela i-HPMC encinci yomgubo, amanzi aya kuchithwa ngokukhawuleza. – 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, nje ngokuba ukugcinwa kwamanzi kulungile, i-viscosity iphantsi (i-7-80 lamawaka), inokwenzeka kwakhona, ngokuqinisekileyo, i-viscosity inkulu, ukugcinwa kwamanzi okuhambelanayo kungcono, xa i-viscosity ingaphezulu kwe-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 ukusuka eludongeni, umhlaba ube ngumgubo, uze usetyenziswe, awusekho, kuba uye waqulunqa into entsha (i-calcium carbonate). Amacandelo aphambili e-gray calcium powder zezi: Ca (OH) 2, CaO kunye nomlinganiselo omncinci weCaCO3 umxube, CaO + H2O = Ca (OH) 2 - Ca (OH) 2 + CO2 = CaCO3↓ + H2O umlotha we-calcium emanzini kunye nomoya phantsi kwesenzo se-CO2, ukubunjwa kwe-calcium carbonate, kunye ne-HPMC kuphela kwi-reaction ye-calcium, i-auxiliary reaction, ayizange ithathe inxaxheba kuyo nayiphi na i-axiliary reaction yamanzi.

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 ngokuqhelekileyo, okukhona i-viscosity iphezulu, kuya kuba ngcono ukugcinwa kwamanzi, iifektri ezininzi zodaka ezomileyo ziqwalasela iindleko, kunye neselulosi ye-viscosity ephakathi (75,000-100000) ukuze ithathe indawo ye-viscosity cellulose ephantsi (20,000-40000) ukunciphisa inani lokongezwa.