Yintoni iHydroxypropyl Methylcellulose HPMC?

IHydroxypropyl Methylcellulose HPMC, ekwabizwa ngokuba yiCellulose ether, yipolima yokwenziwa, enyibilikayo emanzini ephuma kwiselulosi.Yenziwa ngokuguqula i-cellulose yendalo, eyona nxalenye yesakhiwo sezityalo, ngoluhlu lweenkqubo zemichiza.

I-Industrial grade hydroxypropyl methylcellulose yahlulwa yi-viscosity.Ngokuqhelekileyo kusetyenziswa la mabakala alandelayo (ngokwemiqathango ye-viscosity).

I-viscosity ephantsi: i-400 isetyenziselwa udaka oluzimeleyo, kodwa luthunyelwa ngokubanzi.Isizathu: i-viscosity ephantsi, nangona ukugcinwa kwamanzi kubi, kodwa ukulinganisa kulungile, ubuninzi bomdaka buphezulu.

I-viscosity ephakathi kunye nephezulu: i-20000-70000 isetyenziselwa i-adhesive tile, i-agent e-caulking, i-crack-resistant mortar, i-thermal insulation bonding mortar, njl.

Loluphi usetyenziso olungundoqo lwe-hydroxypropyl methylcellulose (HPMC)?

HPMCisetyenziswa kakhulu kwizinto zokwakha, iingubo, iintlaka zokwenziwa, iiseramikhi, amayeza, ukutya, amalaphu, ezolimo, izithambiso, icuba kunye namanye amashishini.I-HPMC inokohlulwa ibe: isakhiwo, ukutya kunye namayeza.Okwangoku, uninzi lwezakhiwo eziveliswa ekhaya zikumgangatho wokwakha.Kwibakala lokwakha, inani le-putty powder likhulu kakhulu, malunga ne-90% lisetyenziselwa ukwenza i-putty powder, kwaye intsalela isetyenziselwa udaka lwesamente kunye neglue.

Kukho iindidi ezininzi ze-hydroxypropyl methylcellulose (HPMC).Yintoni umahluko ekusebenziseni kwabo?

HPMCinokwahlulwa ibe yimveliso echithwe ngoko nangoko kunye neshushu-echithwe, enyibilikayo ngokukhawuleza.Xa isasazeka ngokukhawuleza emanzini abandayo, iyanyamalala emanzini.Ngeli xesha, ulwelo akukho viscosity kuba HPMC isasazwe kuphela emanzini kwaye akukho unyibiliko lokwenene.Malunga nemizuzu emi-2, i-viscosity yolwelo ngokuthe ngcembe yaba nkulu, yenze i-colloid ebonakalayo ebonakalayo.Imveliso yohlobo lwe-hot-melt, kwimeko yamanzi abandayo, inokusasazwa ngokukhawuleza emanzini ashushu kwaye iphele emanzini ashushu.Xa ubushushu buhla kwiqondo elithile lobushushu, i-viscosity ibonakala ngokuthe ngcembe de i-colloid ebonakalayo ebonakalayo yenziwe.Uhlobo olushushu oluchithwe lunokusetyenziswa kuphela kwi-putty powder kunye nodaka.Kwiglue yolwelo kunye nepeyinti, kuya kubakho i-phenomenon ye-clumping, engenakusetyenziswa.Ifumaneka kuluhlu olubanzi lwezicelo, kwi-putty powder kunye nodaka, kunye nakwii-glues zolwelo kunye neengubo.Akukho contraindications.

Zeziphi iindlela zokuchithwa kwe-hydroxypropyl methylcellulose (HPMC)?

Indlela yokuchithwa kwamanzi ashushu: Ekubeni i-HPMC inganyibilikiswa emanzini ashushu, i-HPMC yokuqala inokusasazwa ngokufanayo emanzini ashushu kwaye emva koko inyibilikiswe ngokukhawuleza ngexesha lokupholisa.Iindlela ezimbini eziqhelekileyo zichazwa ngolu hlobo lulandelayo: 1), ibekwe kwisikhongozeli Faka isixa esifunekayo samanzi ashushu kunye nobushushu ukuya kuma-70°C.I-Hydroxypropyl methylcellulose yongezwa ngokuthe ngcembe ngokushukumisa kancinci, kwaye i-HPMC yadada phezu kwamanzi, kwaye emva koko kwenziwa i-slurry, kwaye i-slurry yapholiswa ngokuvuselela.2) Ukongeza i-1/3 okanye i-2/3 yomthamo ofunekayo wamanzi kwisitya kunye nokufudumeza kwi-70 ° C, ukusabalalisa i-HPMC ngokwe-1) ukulungiselela i-slurry yamanzi ashushu;emva koko ungeze inani eliseleyo lamanzi abandayo kumanzi ashushu Kwi-slurry, umxube upholile emva kokuvuselela.Indlela yokuxuba i-powder: i-HPMC powder ixutywe kunye nomthamo omkhulu wezinye izinto ze powdery, ixutywe ngokucokisekileyo kunye ne-blender, ize ichithwe ngamanzi.Ngeli xesha, HPMC inokunyibilika ngaphandle agglomeration, kuba ikona encinane ngalinye HPMC encinane kuphela.Umgubo uya kunyibilika ngokukhawuleza xa udibana namanzi.– Le ndlela isetyenziswa yi putty powder kunye nabavelisi bodaka.IHydroxypropyl methylcellulose (HPMC) isetyenziswa njengento etyebisayo kunye nearhente yokugcina amanzi kwiputty mortar.

Ungawugweba njani umgangatho we-hydroxypropyl methylcellulose (HPMC) ngokulula nangokucacileyo?

(1) Ubumhlophe: Nangona ubumhlophe bungenako ukugqiba ukuba i-HPMC ilula ukuyisebenzisa, kwaye ukuba yongezwa kwi-brightener ngexesha lenkqubo yokuvelisa, iya kuchaphazela umgangatho wayo.Nangona kunjalo, iimveliso ezilungileyo kakhulu zimhlophe.(2) Ukulunga: Ukulunga kwe-HPMC ngokubanzi kune-80 mesh kunye ne-100 mesh, kunye ne-120 mesh ingaphantsi.Okukhona ukucoleka, kokukhona kungcono ngokubanzi.(3) Ukuhanjiswa: Faka i-hydroxypropyl methylcellulose (HPMC) emanzini ukwenza i-colloid ecacileyo, kwaye ujonge ukucaca kwayo.Okukhona uthumelo lungcono, kokukhona izinto ezinganyibilikiyo zincinci..Ireactor ethe nkqo inokungena kakuhle, kwaye ireactor ethe tyaba imbi kakhulu, kodwa ayithethi ukuba umgangatho wereactor ume nkqo ungcono kunalowo weketile.Umgangatho wemveliso unqunywe yimiba emininzi.(4) Umxhuzulane okhethekileyo: Okukhona usiba mkhulu umxhuzulane othile, kokukhona unzima ngakumbi.Umlinganiselo mkhulu, ngokuqhelekileyo ngenxa yokuba umxholo weqela le-hydroxypropyl liphezulu, kwaye umxholo weqela le-hydroxypropyl liphezulu, ukugcinwa kwamanzi kungcono.

Yintoni ubungakanani be-hydroxypropyl methylcellulose (HPMC) kwi-putty powder?

Isixa somgangatho wokwakha HPMCesetyenziswa kwizicelo ezisebenzayo ziyahlukahluka kunye nemozulu, ubushushu, umgangatho wendawo ye-ash calcium, ifomula ye-putty powder kunye "nomgangatho ofunwa ngabathengi".Ngokubanzi, phakathi kwe-4 kg kunye ne-5 kg.Umzekelo: indawo ebandayo yeputty powder, ininzi ibeka i-5 kg;Indawo eshushu kakhulu yi-5 kg ​​ehlotyeni kunye ne-4.5 kg ebusika.

Yintoni i-viscosity ye-hydroxypropyl methylcellulose (HPMC)?

Umgubo weputty eludongeni ngokuqhelekileyo uyi-100,000, kwaye udaka olomileyo lufuneka ukuba lube phezulu.Kuyimfuneko ukusebenzisa i-150,000.Ngaphezu koko, eyona ndima ibalulekileyo ye-HPMC kukugcina amanzi, kulandele ukujiya.Kwi-putty powder, ngokude nje ukugcinwa kwamanzi kulungile, i-viscosity iphantsi (70,000-80,000), nayo inokwenzeka.Ngokuqinisekileyo, i-viscosity inkulu, ukugcinwa kwamanzi okuhambelanayo kungcono.Xa i-viscosity idlula i-100,000, umphumo we-viscosity ekugcinweni kwamanzi ayikho enkulu kakhulu.

Zeziphi iimpawu eziphambili zobugcisa ze-hydroxypropyl methylcellulose (HPMC)?

Umxholo weHydroxypropyl kunye ne-viscosity, abaninzi abasebenzisi banenkxalabo malunga nezi zikhombisi zimbini.Ukuba umxholo wehydroxypropyl uphezulu, ugcino lwamanzi lungcono.I-Viscosity, ukugcinwa kwamanzi, isihlobo (kunokuba i-absolute), kunye ne-viscosity ephezulu, ingcono kwi-cement mortar.

Zeziphi ezona zixhobo ziphambili ze-hydroxypropyl methylcellulose (HPMC)?

Izinto eziphambili ze-hydroxypropyl methylcellulose (HPMC): i-cotton ecocekileyo, i-methyl chloride, i-propylene oxide, ezinye izinto eziluhlaza, ezifana ne-caustic soda, i-asidi, i-toluene, i-isopropanol.

Iyiphi indima ephambili ye-HPMC ekusebenziseni i-putty powder?

I-HPMC idlala indima yokuqina, ukugcinwa kwamanzi kunye nokwakhiwa kwiputty powder.Ukuqina: I-Cellulose inokugqithwa ukuze inqunyanyiswe, gcina isisombululo ngokulinganayo, kwaye uxhathise i-sag.Ukugcinwa kwamanzi: I-putty powder yomiswa ngokukhawuleza, kwaye i-calcium ash encedisayo isabela phantsi kwesenzo samanzi.Ukwakhiwa: I-Cellulose inefuthe lokuthambisa, elinokwenza ukuba i-putty powder ibe nokusebenza kakuhle.I-HPMC ayithathi nxaxheba kuyo nayiphi na imichiza kwaye idlala indima exhasayo kuphela.I-putty powder ngamanzi, eludongeni, i-chemical reaction.Ngenxa yokubunjwa kwezinto ezintsha, i-putty powder eludongeni ikhutshwe eludongeni, igayiwe ibe ngumgubo, kwaye isetyenziswe kwakhona, ayiyi kusebenza, kuba into entsha yenziwe (i-calcium carbonate).).Amacandelo aphambili e-ash calcium powder zezi: Ca (OH) 2, umxube weCaO kunye nexabiso elincinci leCaCO3, CaO+H2O=Ca(OH)2-Ca(OH)2+CO2=CaCO3+H2O ash calcium in amanzi kunye nomoya Ngaphantsi kwesenzo se-CO2, i-calcium carbonate yenziwe, kwaye i-HPMC igcina amanzi kuphela, incedisa ukusabela okungcono kwe-ash calcium, kwaye ayithathi nxaxheba kuyo nayiphi na impendulo ngokwayo. 

I-HPMC yi-ether ye-cellulose engeyo-ionic, ngoko ke yintoni i-non-ion?

Ngokuqhelekileyo, i-non-ion yinto engekho emanzini kwaye ayinayo i-ionized.Ionization ibhekisela kwinkqubo apho i-electrolyte idityaniswe kwi-ion ehamba ngokukhululekileyo ehlawuliswayo kwi-solvent ethile efana namanzi okanye utywala.Ngokomzekelo, ityuwa edliwa yonke imihla, i-sodium chloride (NaCl), i-ionized ukuvelisa i-sodium ions yamahhala (Na +) ihlawuliswe kakuhle kunye ne-chloride (Cl) ihlawuliswe kakubi.Oko kukuthi, i-HPMC ifakwe emanzini kwaye ayidibanisi kwii-ion ezihlawuliswayo, kodwa ikhona ngendlela yeemolekyuli.

Buthini ubushushu bejeli yehydroxypropyl methylcellulose?

Ubushushu bejeli ye-HPMC inxulumene nomxholo wayo we-methoxy.Ukunciphisa umxholo we-methoxy, uphezulu ubushushu be-gel.

Ngaba i-powder ye-putty inalo naluphi na ubudlelwane kunye ne-HPMC?

Umgubo we-putty unxulumene kakhulu nomgangatho we-gray calcium, kwaye awunanto encinci yokwenza ne-HPMC.Umxholo ophantsi we-calcium we-ash calcium kunye nomlinganiselo ongafanelekanga we-CaO kunye ne-Ca (OH) 2 kwi-ash calcium iya kubangela ukulahleka kwe powder.Ukuba ihambelana ne-HPMC, ngoko ukuba ukugcinwa kwamanzi kwe-HPMC kubi, kuya kubangela ukulahleka kwe powder.

Uthini umahluko phakathi kohlobo lwangoko nangoko lwamanzi abandayo kunye nohlobo olushushu olunyibilikayo lwe-hydroxypropyl methylcellulose kwinkqubo yokuvelisa?Amanzi abandayo e-HPMC aphathwa ngoko nangoko nge-glyoxal, kwaye asasazwa ngokukhawuleza emanzini abandayo, kodwa awanyibiliki ngokwenene.Xa i-viscosity iphakanyisiwe, iyachithwa.Ifom ye-soluble eshushu ayiphathwanga phezulu nge-glyoxal.Xa inani le-glyoxal likhulu, ukusabalalisa ngokukhawuleza, kodwa i-viscosity iyacotha. 

Yintoni ivumba le-hydroxypropyl methylcellulose (HPMC)?

I-HPMC eveliswa yindlela yokunyibilikisa isebenzisa i-toluene kunye ne-isopropyl alcohol njengezinyibilikisi.Ukuba ukuhlamba akukuhle kakhulu, kuya kubakho incasa eseleyo.

Indlela yokukhetha i-hydroxypropyl methylcellulose (HPMC) efanelekileyo ngeenjongo ezahlukeneyo?

Ukusetyenziswa kwe-putty powder: imfuno iphantsi, i-viscosity yi-100,000, ilungile, into ebalulekileyo kukugcina amanzi angcono.Ukusetyenziswa komdaka: iimfuno eziphezulu, i-viscosity ephezulu, i-150,000 ingcono.Ukusetyenziswa kweglue: Kufuneka imveliso yohlobo olukhawulezayo, i-viscosity ephezulu.

Yintoni igama le-hydroxypropyl methylcellulose?

Hydroxypropyl methylcellulose, HydroxypropylMethylCellulose Isifinyezo: HPMC okanye MHPC alias: hypromellose;i-cellulose hydroxypropyl methyl ether;I-Hypromellose, i-Cellulose ether, i-2-hydroxypropylmethyl Cellulos eether.I-Cellulose hydroxypropyl methyl ether, iHyprolose.

Ukusetyenziswa kwe-HPMC kwi-putty powder, yintoni imbangela ye-foam kwi-putty powder?

I-HPMC idlala indima yokuqina, ukugcinwa kwamanzi kunye nokwakhiwa kwiputty powder.Musa ukuthatha inxaxheba kuyo nayiphi na impendulo.Isizathu seqamza: 1, amanzi maninzi kakhulu.2, umaleko ongezantsi awomile, susa nje umaleko phezulu, kulula ukuphosa amagwebu.　

Ifomula yomgubo weputty yangaphakathi nangaphandle?

Ngaphakathi eludongeni putty powder: enzima calcium 800KG grey calcium 150KG (starch ether, eluhlaza esulungekileyo, umhlaba penmine, citric acid, polyacrylamide, njl ingakhethwa ngokufanelekileyo ukongeza)

I-putty yodonga lwangaphandle: i-samente 350KG, i-calcium enzima 500KG, isanti ye-quartz 150KG, i-latex Powder 8-12KG, i-cellulose ether 3KG, isitashi se-ether 0.5KG, i-wood fiber 2KG

Yintoni umahluko phakathi kwe-HPMC kunye ne-MC?

I-MC yi-methyl cellulose.Emva kokuba umqhaphu ocociweyo uphathwe nge-alkali, i-chloromethane isetyenziselwa i-etherifying agent, kwaye uchungechunge lweempendulo zenziwa ukulungiselela i-cellulose ether.Iqondo lokutshintshwa ngokubanzi ngu-1.6 ukuya ku-2.0, kwaye iqondo lokutshintshwa liyahluka ngokuxhomekeke kunyinyibiliko.yeye-nonionic cellulose ether.

(1) Ukugcinwa kwamanzi kwe-methyl cellulose kuxhomekeke kwixabiso lokongezwa, i-viscosity, i-particle fineness kunye nesantya sokuchithwa.Ngokuqhelekileyo, inani lokongezwa likhulu, ukulunga kuncinci, kwaye i-viscosity inkulu, kwaye izinga lokugcinwa kwamanzi liphezulu.Isixa esongezelelweyo sinempembelelo enkulu kwizinga lokugcinwa kwamanzi, kwaye inqanaba le-viscosity alilingani nomlinganiselo wokugcinwa kwamanzi.Izinga lokutshatyalaliswa lixhomekeke ngokukodwa kwiqondo lokuguqulwa komphezulu we-cellulose particles kunye ne-fineness of particles.Phakathi kwezi zingentla ze-cellulose ethers, i-methylcellulose kunye ne-hydroxypropylmethylcellulose inezinga eliphezulu lokugcinwa kwamanzi.

(2) I-Methylcellulose iyanyibilika emanzini abandayo, kwaye kunzima ukuyinyibilika emanzini ashushu.Isisombululo samanzi sizinzile kakhulu kuluhlu lwe-pH = 3 ~ 12.Iyahambelana kakuhle nestatshi, iguar gum kunye nezinye izinto ezininzi ezisebenza kwi-surfactants.Xa iqondo lokushisa lifikelela kwiqondo lokushisa, i-gelation phenomenon iyenzeka.

(3) Ukutshintsha kweqondo lobushushu kuyakuchaphazela kakhulu izinga lokugcinwa kwamanzi kwi-methyl cellulose.Ngokuqhelekileyo, okukhona ubushushu buphezulu, kokukhona ukugcinwa kwamanzi kubi.Ukuba iqondo lokushisa lomdaka lidlula i-40 ° C, ukugcinwa kwamanzi kwe-methyl cellulose kuya kuba nzima kakhulu, okuchaphazela kakhulu ukusebenza kodaka.

(4) I-Methyl cellulose inefuthe elibonakalayo ekusebenzeni kunye nokunamathela komdaka.“Ukuncamathela” apha kubhekisa kumandla okuncamathelisa avakala phakathi kwesixhobo sokusebenza somsebenzi kunye nenxalenye yodonga, oko kukuthi, ukuxhathisa kokucheba kodaka.I-adhesion inkulu, ukuxhathisa kwe-shear yodaka kukhulu, amandla afunwa ngumsebenzi ngexesha lokusetyenziswa nawo mkhulu, kwaye ukusebenza kodaka kubi.

I-Methylcellulose adhesion iphakathi kwiimveliso ze-cellulose ether.I-HPMC yi-hydroxypropylmethylcellulose, eyi-nonionic cellulose exutywe i-ether elungiselelwe uchungechunge lweempendulo usebenzisa i-acetal oxide kunye ne-methyl chloride njenge-etherifying agent emva kwe-alkalization yekotoni esulungekileyo.Iqondo lokutshintshwa ngokubanzi li-1.2 ukuya ku-2.0.Ubume bayo buhluke ngokuxhomekeke kumlinganiselo we-methoxyl umxholo kunye nomxholo we-hydroxypropyl.

(1) IHydroxypropyl methylcellulose inyibilika lula emanzini abandayo, kwaye kusenokuba nzima ukuyinyibilikisa emanzini ashushu.Nangona kunjalo, ubushushu bayo be-gelation emanzini ashushu buphezulu kakhulu kune-methyl cellulose.Ukunyibilika kumanzi abandayo kukwangcono kakhulu kune-methyl cellulose.-

(2) I-viscosity ye-hydroxypropylmethylcellulose ihambelana nesisindo se-molecular yayo, kwaye i-viscosity iphezulu xa ubunzima be-molecular bukhulu.Ubushushu buchaphazela i-viscosity yayo, ukunyuka kweqondo lokushisa, kwaye i-viscosity iyancipha.Nangona kunjalo, i-viscosity yayo inobushushu obuphantsi kune-methyl cellulose.Isisombululo saso sizinzile kwiqondo lokushisa.

(3) I-Hydroxypropyl methylcellulose izinzile kwi-acids kunye neziseko, kwaye isisombululo saso samanzi sizinzile kakhulu kuluhlu lwe-pH = 2 ~ 12.I-soda ye-Caustic kunye namanzi e-lime ayinayo impembelelo eninzi kwiipropati zabo, kodwa i-alkali ikhawuleza isantya sokuchithwa kunye nokwandisa i-viscosity.I-Hydroxypropyl methylcellulose inozinzo kwiityuwa eziqhelekileyo, kodwa xa ukuxinwa kwesisombululo setyuwa kuphezulu, i-viscosity yesisombululo se-hydroxypropyl methylcellulose ivame ukunyuka.

(4) Ukugcinwa kwamanzi kwe-hydroxypropyl methylcellulose kuxhomekeke kwixabiso lokongezwa, i-viscosity, njl., kwaye izinga lokugcinwa kwamanzi phantsi kwesixa esifanayo liphezulu kunelo le-methylcellulose.

(5) I-Hydroxypropyl methylcellulose inokuxutywa kunye ne-polymer compound e-soluble yamanzi ukuze yenze i-uniform, isisombululo esiphezulu se-viscosity.Okufana ne-polyvinyl alcohol, i-ether ye-starch, i-gum yemifuno kunye nokunye okunjalo.

(6) I-Hydroxypropyl methylcellulose ine-adhesion ephezulu kumdaka kune-methyl cellulose.

(7) I-Hydroxypropyl methylcellulose inokumelana ne-enzymatic engcono kune-methylcellulose, kwaye isisombululo sayo asinakwenzeka ukuba sithotywe nge-enzymatic kune-methylcellulose.

HPMC viscosity kunye nobudlelwane bobushushu, yintoni ekufuneka iqwalaselwe kwizicelo ezibonakalayo?

I-viscosity ye-HPMC ihambelana ngokungafaniyo neqondo lokushisa, oko kukuthi, i-viscosity iyanda ngokuhla kweqondo lokushisa.I-viscosity yemveliso esidla ngokubhekisela kuyo sisiphumo sokuvavanya isisombululo sayo se-2% se-aqueous kwiqondo lokushisa lama-20 degrees Celsius.Kwizicelo ezisebenzayo, kwiindawo ezinomahluko omkhulu wokushisa phakathi kwehlobo 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 ikhutshiwe, ukuvakalelwa kwesandla kuya kuba nzima.I-viscosity ephakathi: 75000-100000 Ikakhulu isetyenziselwa i-putty Isizathu: ukugcinwa kwamanzi kwi-viscosity ephezulu: i-150000-200000 isetyenziselwa ikakhulu i-polystyrene granule insulation mortar powder kunye ne-vitrified microbead insulation mortar.Isizathu: i-viscosity ephezulu, udaka alulula ukuwa Ewe, sag, ukwakhiwa okuphuculweyo.Kodwa ngokubanzi, ukuphakama kwe-viscosity, ngcono ukugcinwa kwamanzi, izityalo ezininzi zodaka ezomileyo ziqwalasela iindleko, zitshintshe i-cellulose ye-viscosity ephakathi kunye ne-viscosity ephakathi (75000-100000).(20000-40000) ukunciphisa imali eyongeziweyo.