Isisombululo se-HPMC

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

Impendulo : I-HPMC isetyenziswa ngokubanzi kwizinto zokwakha, iingubo, ii-resin zokwenziwa, iiseramikhi, amayeza, ukutya, impahla, ezolimo, izithambiso, icuba kunye namanye amashishini.I-HPMC inokohlulwa ibe: ibakala lokwakha, ibakala lokutya kunye nebakala lezonyango ngokwendlela yokusetyenziswa.Okwangoku i-homemade ininzi inqanaba lokwakha, kwinqanaba lokwakha, inani le-putty powder likhulu kakhulu, malunga ne-90% isetyenziselwa ukwenza i-putty powder, enye isetyenziselwa ukwenza udaka lwesamente kunye neglue.

2, i-hydroxypropyl methyl cellulose (HPMC) yahlulwe yaba ziindidi ezininzi, yintoni umahluko phakathi kokusetyenziswa kwayo?

Impendulo :HPMC inokohlulwa ibe yi-soluble ekhawulezileyo kunye nobushushu obunyibilikayo, iimveliso ezikhawulezayo, kumanzi abandayo asasazeke ngokukhawuleza, anyamalala emanzini, ngeli xesha ulwelo alunayo i-viscosity, kuba i-HPMC isasazeke nje emanzini, akukho lunyibiliko lokwenene.Malunga nemizuzu emi-2, i-viscosity yolwelo iyanda ngokuthe ngcembe, yenze i-colloid ebonakalayo ebonakalayo.Ubushushu iimveliso ezinyibilikayo, kumanzi abandayo agglomeration, inokuba kumanzi ashushu, ngokukhawuleza saa, zinyamalale emanzini ashushu, de iqondo lobushushu lehla ukuya kwiqondo lobushushu elithile, viscosity ngokucothayo avele, de ukwakheka transparent viscous colloid.Uhlobo olunyibilikayo lobushushu lunokusetyenziswa kuphela kwiputty kunye nodaka, kwiglue elulwelo kunye nokwaleka, kunokuvela isenzeko se-agglomeration, ayinakusetyenziswa.Imodeli yokunyibilika kwangoko, umda wesicelo ubanzi ngakumbi, unesithukuthezi ngomgubo womntwana kunye nodaka, kunye neglue elulwelo kunye nokwaleka, zonke zingasetyenziswa, zingabi nasiphi na i-taboo.

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

-Impendulo: indlela yokuchithwa kwamanzi ashushu: ngenxa yokuba i-HPMC ayinyibiliki emanzini ashushu, ngoko ke i-HPMC yasekuqaleni inokusasazwa ngokulinganayo emanzini ashushu, kwaye ngokukhawuleza ichithwe xa ipholisa, iindlela ezimbini eziqhelekileyo zichazwe ngolu hlobo lulandelayo:

1) Gcwalisa isikhongozeli ngamanzi ashushu kangangoko ufuna kwaye usifudumeze ukuya kuma 70℃.I-Hydroxypropyl methyl cellulose yongezwa kancinci kancinci phantsi kokuvuselela kancinane, kwaye i-HPMC idada phezu kwamanzi, kwaye ngokuthe ngcembe yenze i-slurry, epholiswe phantsi kokuvuselela.

2) Yongeza i-1/3 okanye i-2/3 yomthamo ofunekayo wamanzi kwisikhongozeli kwaye uyifudumeze ukuya kuma-70℃.Ukusasaza i-HPMC ngokwendlela ye-1) ukulungiselela udaka lwamanzi ashushu;Emva koko faka amanzi abandayo asele kwi-slurry yamanzi ashushu kwaye upholise umxube emva kokuvuselela.

Indlela yokuxuba umgubo: i-HPMC yomgubo kunye nenani elikhulu lezinye izithako ze-powdery eziphathekayo, ezixutywe ngokupheleleyo kunye ne-blender, kwaye zongeza amanzi ukuze zinyibilike, ngeli xesha i-HPMC inokunyibilika, kwaye ingabi yi-agglomerate, kuba ikona nganye encinci, i-HPMC encinci yomgubo, amanzi. iyakunyibilika kwangoko.– Umgubo weputty kunye nabavelisi bodaka basebenzisa le ndlela.[I-Hydroxypropyl methyl cellulose (HPMC) esetyenziswa njenge-agent etyebisayo kunye ne-agent egcina amanzi kwi-putty powder mortar.

I-4, indlela yokumisela umgangatho we-hydroxypropyl methyl cellulose (HPMC) elula kwaye enembile?

Impendulo : (1) ubumhlophe: nangona ubumhlophe bungenako ukugqiba ukuba i-HPMC ilungile, kwaye ukuba yongezwa kwinkqubo yokuvelisa i-whitener, iya kuchaphazela umgangatho wayo.Nangona kunjalo, uninzi lweemveliso ezilungileyo zinobumhlophe obuhle.(2) ukucoleka :Ukulunga kweHPMC ngokuqhelekileyo yi-80 mesh kunye ne-100 mesh, i-120 injongo ngaphantsi, i-Hebei HPMC ubukhulu becala i-80 ye-mesh, i-fineness ye-fineness, xa uthetha ngokubanzi, ngcono.(3) ukuhanjiswa: i-hydroxypropyl methyl cellulose (HPMC) emanzini, ukubunjwa kwe-colloid ebonakalayo, jonga ukuhanjiswa kwayo, ukuhanjiswa okukhulu kungcono, izinto ezingenayo i-insoluble ngaphakathi ngaphantsi.Ukuhanjiswa kwereactor ethe nkqo ilungile gabalala, kwaye eyereactor ethe tyaba imbi kakhulu, kodwa ayithethi ukuba umgangatho wemveliso yereactor ethe nkqo ungcono kunaleyo yereactor ethe tye.Kukho izinto ezininzi zokumisela umgangatho wemveliso.(4) Umlinganiselo: ubukhulu bomlinganiselo, ubunzima bungcono.Okubaluleke kakhulu, kuba umxholo wesiseko se-hydroxyl propyl uphezulu ngokuqhelekileyo, umxholo wesiseko se-hydroxyl propyl uphezulu, ukhusela amanzi ukuze ufune ngcono.

I-5, i-hydroxypropyl methyl cellulose (HPMC) i-viscosity ifanelekile ngakumbi?

– impendulo: ukuba nesithukuthezi ngumgubo umntwana ok ngokuqhelekileyo 100 lamawaka, ezinye ubude imfuneko ngodaka, ufuna 150 amawaka amandla ukusebenzisa.Ngaphezu koko, i-HPMC yeyona ndima ibalulekileyo yokugcina amanzi, ilandelwa kukujiya.Kwi-putty powder, ukuba nje ukugcinwa kwamanzi kulungile, i-viscosity iphantsi (i-7-80 lamawaka), inokwenzeka kwakhona, ngokuqinisekileyo, i-viscosity inkulu, ukugcinwa kwamanzi okuhambelanayo kungcono, xa i-viscosity ingaphezulu. I-100 lamawaka, i-viscosity yokugcinwa kwamanzi ayininzi.

6, i-hydroxypropyl methyl cellulose (HPMC) zeziphi iimpawu eziphambili zobugcisa?.

Impendulo: Umxholo we-Hydroxypropyl kunye ne-viscosity, abaninzi abasebenzisi bayayikhathalela ezi zikhombisi zimbini.Umxholo weHydroxypropyl uphezulu, ukugcinwa kwamanzi ngokuqhelekileyo kungcono.I-Viscosity, ukugcinwa kwamanzi, isihlobo (kodwa asiyiyo ngokupheleleyo) nayo ingcono, kunye ne-viscosity, udaka lwesamente lungcono ukusebenzisa ezinye.

7, i-hydroxypropyl methyl cellulose (HPMC) zeziphi ezona zixhobo ziphambili?

Impendulo: i-hydroxypropyl methyl cellulose (HPMC) eyona nto iphambili: i-cotton ecocekileyo, i-chloromethane, i-propylene oxide, ezinye izinto eziluhlaza, i-tablet alkali, i-asidi, i-toluene, i-alcohol isopropyl kunye nokunye.

I-8, i-HPMC ekusebenziseni i-putty powder, indima ephambili, nokuba kwenzeka ntoni kwi-chemistry?

Impendulo: I-HPMC kwi-putty powder, ukuqina, amanzi kunye nokwakhiwa kweendima ezintathu.Ukutyeba: i-cellulose inokugqithwa ukuze inqunyanyiswe, ukuze isisombululo sihlale sifana phezulu nasezantsi indima ye-anti-flow ejingayo.Ukugcinwa kwamanzi: yenza iputty powder yome kancinci, i-calcium encedisayo engwevu kwisenzo sokusabela kwamanzi.Ukwakhiwa: i-cellulose lubrication, inokwenza i-putty powder inokwakhiwa okulungileyo.I-HPMC ayithathi nxaxheba kuyo nayiphi na intshukumo yeekhemikhali, kodwa idlala indima exhasayo kuphela.I-putty powder kunye namanzi, eludongeni, i-chemical reaction, ngenxa yesizukulwana sezinto ezintsha, udonga lwe-putty powder ehla eludongeni, lugaywe lube ngumgubo, kwaye lusebenzise, ​​alulungile, kuba luye lwaqulunqa into entsha. (icalcium carbonate).Ukwakhiwa okuphambili kwe-powder ye-calcium engwevu ngumxube weCa (OH) 2, iCaO kunye nexabiso elincinci leCaCO3, CaO+H2O=Ca(OH)2 - Ca(OH)2+CO2=CaCO3↓+H2O Gray calcium in amanzi kunye nomoya phantsi kwesenzo se-CO2, i-calcium carbonate, kunye ne-HPMC yamanzi kuphela, incedisa i-gray calcium reaction better, eyayo ayizange ithathe inxaxheba kuyo nayiphi na impendulo.

9.HPMC non-ionic cellulose ether, ngoko yintoni na non-ionic?

IMPENDULO: Ngokuqhelekileyo, iinon-ion zizinto ezingenayo i-ayoni emanzini.Ionization kukuchithwa kwe-electrolyte ibe yi-ion ehlawuliswayo yamahhala kwi-solvent ethile, njengamanzi okanye utywala.Ngokomzekelo, ityuwa esiyidla yonke imihla - i-sodium chloride (i-NaCl) inyibilika emanzini kwaye i-ionizes ukuvelisa i-ion ye-sodium ehambayo yamahhala (Na +) kunye nentlawulo efanelekileyo kunye ne-chloride ion (Cl) enentlawulo embi.Oko kukuthi, i-HPMC emanzini ayidibanisi kwii-ion ezihlawuliswayo, kodwa zikhona njengeemolekyuli.

10. Yintoni enxulumene nobushushu bejeli ye-hydroxypropyl methyl cellulose?

– Impendulo: Ubushushu be-gel ye-HPMC ihambelana nomxholo we-methoxyl, i-methoxyl ephantsi ye-methoxyl ↓, iphezulu i-gel ye-gel.

I-11, i-putty powder powder kunye ne-HPMC akukho budlelwane?

Impendulo: i-putty powder drop powder ngokuyinhloko kunye nomgangatho we-ash calcium unobudlelwane obukhulu kakhulu, kwaye i-HPMC ayinalo ubudlelwane obukhulu kakhulu.Umxholo ophantsi we-calcium we-gray calcium kunye nomlinganiselo ongafanelekanga we-CaO kunye ne-Ca (OH) 2 kwi-gray calcium iya kubangela ukuhla kwepowder.Ukuba kukho ubudlelwane obuncinci kunye ne-HPMC, ke ukugcinwa kwamanzi kwe-HPMC kubi, kuya kubangela ukuba i powder.

12, hydroxypropyl methyl cellulose amanzi abandayo anyibilikayo kwaye ashushu anyibilikayo kwinkqubo yokuvelisa yintoni umahluko?

– Impendulo :Amanzi abandayo e-HPMC yohlobo lwesisombululo esikhawulezileyo emva konyango lomphezulu we-glyoxal, afakwe emanzini abandayo asasazwe ngokukhawuleza, kodwa anganyibiliki ngokwenene, i-viscosity phezulu, iyachithwa.Uhlobo lwe-thermosoluble aluzange luphathwe nge-glyoxal.Ubungakanani be-glyoxal bukhulu, ukusabalalisa ngokukhawuleza, kodwa i-viscosity iyacotha, inani lincinci, ngokuchaseneyo.

13, i-hydroxypropyl methyl cellulose (HPMC) ivumba linjani?

– Impendulo: I-HPMC eveliswe ngendlela ye-solvent yenziwe nge-toluene kunye ne-isopropyl alcohol.Ukuba ukuhlamba akukuhle kakhulu, kuya kubakho incasa eseleyo.

I-14, ukusetyenziswa okuhlukeneyo, indlela yokukhetha i-hydroxypropyl methyl cellulose (HPMC) efanelekileyo?

- impendulo: yiba nesithukuthezi ngokusetyenziswa komgubo womntwana: imfuno iphantsi, i-viscosity eyi-100 lamawaka, ok, kubalulekile ukukhusela amanzi ukuba asondele.Ukusetyenziswa kodaka: iimfuno eziphezulu, iimfuno eziphezulu ze-viscosity, i-150 lamawaka ukuba ibe ngcono.Ukusetyenziswa kweglue: imfuno yeemveliso ezikhawulezayo, i-viscosity ephezulu.

15.Yintoni igama le-hydroxypropyl methyl cellulose?

– IMPENDULO: I-Hydroxypropyl Methyl Cellulose, efinyeziweyo njenge-HPMC okanye i-MHPC, okanye i-Hydroxypropyl Methyl Cellulose;i-cellulose hydroxypropyl methyl ether;I-Hypromellose, iSelulosi, i-2-hydroxypropyl methyl Cellulose ether.

I-16.HPMC ekusebenziseni i-putty powder, i-putty powder bubble sisiphi isizathu?

Impendulo: I-HPMC kwi-putty powder, ukuqina, amanzi kunye nokwakhiwa kweendima ezintathu.Ukungathathi nxaxheba kuyo nayiphi na impendulo.Iimbangela zamaqamza: 1, amanzi amaninzi.I-2, i-bottom ayomile, phezu kwe-scraping layer, nayo ilula ukuba i-blister.

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

– Impendulo :MC yi-methyl cellulose, eyenziwe nge-cellulose ether ngoluhlu lweempendulo kunye ne-methane chloride njenge-etherifying agent emva kokuba umqhaphu ocociweyo uphathwe nge-alkali.Ngokuqhelekileyo, iqondo lokutshintshwa yi-1.6 ~ 2.0, kwaye ukunyibilika kuyahluka kunye neqondo lokutshintshwa.Yeye-nonionic cellulose ether.

(1) Ukugcinwa kwamanzi kwi-methyl cellulose kuxhomekeke kwisixa sokongeza, i-viscosity, i-particle fineness kunye neqondo lokuchithwa.Ngokubanzi yongeza isixa esikhulu, i-fineness encinci, i-viscosity, izinga lokugcinwa kwamanzi liphezulu.Phakathi kwabo, isixa sokongeza sinempembelelo enkulu ekugcinweni kwamanzi, kwaye i-viscosity ayilingani nokugcinwa kwamanzi.Isantya sokuchithwa sixhomekeke ikakhulu kwiqondo lokuguqulwa komphezulu kunye ne-particle fineness yamasuntswana e-cellulose.Kwezi zingentla ze-cellulose ethers, i-methyl cellulose kunye ne-hydroxypropyl methyl cellulose izinga lokugcinwa kwamanzi liphezulu.

(2) I-Methyl cellulose iyanyibilika emanzini abandayo, okunzima ukuyinyibilika emanzini ashushu.Isisombululo saso samanzi sizinzile kakhulu ngaphakathi kwe-pH = 3 ~ 12.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, okuchaphazela ngokunzulu ukwakhiwa kodaka.

(4) I-Methyl cellulose inefuthe elicacileyo ekwakhiweni kunye nokunamathela kodaka."Ukunamathela" apha kubhekiselele ekunamatheleni okuvakalelwa ngumsebenzi phakathi kwesixhobo kunye ne-substrate eludongeni, oko kukuthi ukuxhathisa kwe-shear yodaka.Ukubambelela kukhulu, ukuxhathisa kwe-shear yodaka kukhulu, amandla afunwa ngabasebenzi kwinkqubo yokusetyenziswa nawo mkhulu, kwaye ukwakhiwa kodaka kubi.Kwiimveliso ze-cellulose ether, i-adhesion ye-methyl cellulose ikwinqanaba eliphakathi.

I-HPMC ye-hydroxypropyl methyl cellulose, isulungekiswa ngumqhaphu emva konyango lwe-alkali, kunye ne-propylene oxide kunye ne-chloromethane njenge-agent etherifying, ngoluhlu lweempendulo kwaye zenziwe nge-non-ionic cellulose exutywe i-ether.Iqondo lokutshintshwa ngokubanzi yi-1.2 ~ 2.0.Iipropati zayo ziyahluka kunye nomlinganiselo we-methoxy kunye ne-hydroxypropyl content.

(1) IHydroxypropyl methyl cellulose inyibilika ngokulula emanzini abandayo, ekunzima ukuyinyibilika emanzini ashushu.Nangona kunjalo, ubushushu bayo be-gelation kumanzi ashushu ngokucacileyo bungaphezulu kwe-methyl cellulose.I-solubility ye-methyl cellulose emanzini abandayo nayo yaphuculwa kakhulu.

(2) I-viscosity ye-hydroxypropyl methyl cellulose inxulumene nobunzima bayo be-molecular, kwaye ukuphakama kwe-molecular weight, iphezulu i-viscosity.Ubushushu bukwachaphazela i-viscosity.I-Viscosity iyancipha njengoko ubushushu bukhula.Kodwa i-viscosity yayo ifuthe eliphezulu lobushushu liphantsi kune-methyl cellulose.Isisombululo sizinzile xa sigcinwe kwiqondo lokushisa.

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

(4) Ukugcinwa kwamanzi e-hydroxypropyl methyl cellulose kuxhomekeke kwidosi kunye ne-viscosity, kwaye izinga lokugcinwa kwamanzi e-hydroxypropyl methyl cellulose liphezulu kunelo le-methyl cellulose kwidosi enye.

(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, iglue yemifuno njalo njalo.

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

(7) I-Hydroxypropyl methyl cellulose inokumelana ne-enzyme engcono kune-methyl cellulose, kunye nesisombululo sayo sokutshatyalaliswa kwe-enzyme yesisombululo singaphantsi kune-methyl cellulose.

18. Yintoni ekufuneka iqwalaselwe kwisicelo esisebenzayo sobudlelwane phakathi kwe-viscosity kunye nobushushu be-HPMC?

Impendulo: I-viscosity ye-HPMC ihambelana ngokungafaniyo neqondo lokushisa, oko kukuthi, i-viscosity iyanda ngokuhla kweqondo lokushisa.Xa sithetha nge-viscosity yemveliso, sithetha malunga ne-viscosity ye-2% yemveliso emanzini kwi-20 degrees Celsius.

Kwisicelo esisebenzayo, kwiindawo ezinomahluko omkhulu wokushisa phakathi kwehlobo kunye nobusika, kufuneka kuqatshelwe ukuba kucetyiswa ukuba kusetyenziswe i-viscosity ephantsi kakhulu ebusika, ehambelana nokwakhiwa.Ngaphandle koko, xa iqondo lokushisa liphantsi, i-viscosity ye-cellulose iya kwanda, kwaye xa ukhuhla, ukuvakalelwa kuya kuba nzima.

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

Isizathu: Ukugcinwa kakuhle kwamanzi.

I-viscosity ephezulu :150000-200000 isetyenziswa ikakhulu kwi-polystyrene i-particle insulation i-rubber powder kunye ne-vitrified beads yokugquma udaka.

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

Kodwa xa sithetha ngokubanzi, okukhona i-viscosity iphezulu, ngcono ukugcinwa kwamanzi, iifektri ezininzi zodaka olomileyo, ngokuqwalasela iindleko, sebenzisa i-cellulose ye-viscosity ephakathi (75000-100000) ukuthatha indawo ye-viscosity cellulose ephakathi kunye nephantsi (20000-40000) ukunciphisa inani. yokongeza.