I-viscosity ephantsi HPMC :HPMC 400 isetyenziselwa ikakhulu udaka lokuzilinganisa, kodwa lungeniswe ngokubanzi.
Isizathu: I-viscosity iphantsi, nangona ukugcinwa kwamanzi kubi, kodwa ukulinganisa kulungile, kwaye ubuninzi bomdaka buphezulu.
I-viscosity ephakathi kunye nephantsi:ihydroxypropyl methylcelluloseI-HPMC 20000-40000 isetyenziselwa ukunamathela kwithayile, i-agent ye-caulking, i-anti-cracking mortar, i-thermal insulation bonding mortar, njl.
Isizathu: ukusebenza kakuhle, ukongezwa kwamanzi amancinci, ukuxinana kodaka oluphezulu.
1. Yintoni eyona njongo ye-hydroxypropyl methylcellulose (HPMC)?
——A: I-HPMC isetyenziswa 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 lamayeza ngokwenjongo. Okwangoku, uninzi lweemveliso zasekhaya zikumgangatho wokwakha. Kwinqanaba lokwakha, inani le-putty powder likhulu kakhulu, malunga ne-90% isetyenziselwa i-putty powder, kwaye intsalela isetyenziselwa udaka lwesamente kunye neglue.
2. Kukho iintlobo ezininzi ze-hydroxypropyl methylcellulose (HPMC), kwaye yintoni umehluko ekusebenziseni kwabo?
——Impendulo: I-HPMC inokohlulwa ibe uhlobo olukhawulezileyo kunye nohlobo olunyibilikayo olushushu. Iimveliso zohlobo olukhawulezayo zisasazeka ngokukhawuleza emanzini abandayo kwaye zinyamalale emanzini. Ngeli xesha, i-liquid ayinayo i-viscosity, kuba i-HPMC ihlakazekile kuphela emanzini kwaye ayinayo ukuchithwa kwangempela. Emva kwemizuzu emi-2, i-viscosity yolwelo yanda ngokuthe ngcembe, isenza i-colloid ebonakalayo ebonakalayo. Imveliso yokushisa ukushisa, xa idibana namanzi abandayo, inokusasazwa ngokukhawuleza emanzini ashushu, kwaye iphele emanzini ashushu. Xa amaqondo obushushu ehla ukuya kubushushu obuthile (imveliso yenkampani yethu ngama-65 ngokukaCelsius), i-viscosity ibonakala ngokucothayo de yenze i-viscous colloid ecacileyo. Uhlobo lwe-hot-melt lunokusetyenziswa kuphela kwi-putty powder kunye nodaka. Kwiglue yolwelo kunye nepeyinti, i-clumping phenomenon iya kwenzeka kwaye ayinakusetyenziswa. Uhlobo olukhawulezileyo lunoluhlu olubanzi lwezicelo. Ingasetyenziselwa kwi-putty powder kunye nodaka, kunye neglue elulwelo kunye nepeyinti, ngaphandle kokuchasana.
3. Ziziphi iindlela zokuchithwa kwe-hydroxypropyl methylcellulose (HPMC)?
——Impendulo: Indlela yokuchithwa kwamanzi ashushu: Ekubeni i-HPMC inganyibilikiswa kumanzi ashushu, i-HPMC inokusasazwa ngokufanayo kumanzi ashushu kwinqanaba lokuqala, ize inyibilike ngokukhawuleza xa ipholile. 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 ngokushukumisa okucothayo, ekuqaleni i-HPMC yadada phezu kwamanzi, kwaye ngokuthe ngcembe yenza i-slurry, eyapholiswa ngokuvuselela.
2), yongeza i-1/3 okanye i-2/3 yomthamo ofunekayo wamanzi kwisitya, kwaye uyifudumeze ukuya kuma-70 ° C, ngokwendlela ye-1), usasaze i-HPMC, ulungiselele udaka lwamanzi ashushu; uze ungeze inani eliseleyo lamanzi abandayo kumanzi ashushu Kwi-slurry, umxube wawupholile 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 kokuhlanganisana, kuba kukho i-HPMC encinane kuphela kuyo yonke into. ikona encinci encinci. Umgubo uya kuchithwa ngokukhawuleza xa udibana namanzi. ——Le ndlela isetyenziswa ngabavelisi be-putty kunye nodaka. [I-Hydroxypropyl methylcellulose (HPMC) isetyenziswa njenge-thickener kunye ne-agent egcina 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 ngaba i-HPMC kulula ukuyisebenzisa, kwaye ukuba i-brightener yongezwa kwinkqubo yokuvelisa, iya kuchaphazela umgangatho wayo. Nangona kunjalo, uninzi lweemveliso ezilungileyo zinobumhlophe obuhle. (2) Ukulunga: Ukulunga kwe-HPMC ngokuqhelekileyo yi-80 mesh kunye ne-100 mesh, kunye ne-120 mesh ingaphantsi. Uninzi lwe-HPMC eveliswe eHebei yi-80 mesh. Okukhona ukucoleka, kokukhona kungcono. (3) Ukuhanjiswa: Faka i-hydroxypropyl methylcellulose (HPMC) emanzini ukwenza i-colloid ecacileyo, kwaye ukhangele ukuhanjiswa kwayo. Ukuphakama kokuhanjiswa, kungcono, kubonisa ukuba kukho izinto ezincinci ezinganyibilikiyo kuyo. Ukungena kwereactor ethe nkqo ngokuqhelekileyo kulungile, kwaye ireactor ethe tyaba imbi kakhulu, kodwa akunakutshiwo ukuba umgangatho wereactor othe nkqo ungcono kunolo wereactor ethe tye, kwaye kukho izinto ezininzi ezimisela umgangatho wemveliso. (4) Umxhuzulane okhethekileyo: okukhona umkhulu umxhuzulane othile, kokukhona unzima ngakumbi. Ubunzima obuthile bukhulu, ngokuqhelekileyo ngenxa yokuba umxholo we-hydroxypropyl kuwo uphezulu, kwaye umxholo we-hydroxypropyl uphezulu, ukugcinwa kwamanzi kungcono.
5. Ubungakanani be-hydroxypropyl methylcellulose (HPMC) kwi-putty powder?
——Impendulo: Isixa se-HPMC esisetyenzisiweyo kwizicelo ezisebenzayo siyahluka ngokuxhomekeka kwimozulu, iqondo lokushisa, umgangatho wendawo ye-ash calcium, i-formula ye-putty powder kunye "nomgangatho ofunwa ngabathengi". Ngokuqhelekileyo, iphakathi kwe-4 kg kunye ne-5 kg. Ngokomzekelo, 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;
6. Yintoni i-viscosity efanelekileyo ye-hydroxypropyl methylcellulose (HPMC)?
——Impendulo: Umgubo weputty udla ngokuba ziiyuan eziyi-100,000, kwaye udaka lufunwa kakhulu, kwaye kulula ukulusebenzisa kwiiyuan eziyi-150,000. Ngaphezu koko, eyona ndima ibalulekileyo ye-HPMC kukugcina amanzi, kulandele ukujiya. Kwi-putty powder, ngokude nje ukugcinwa kwamanzi kulungile kwaye i-viscosity iphantsi (70,000-80,000), nayo inokwenzeka. Ngokuqinisekileyo, i-viscosity iphezulu, kwaye ukugcinwa kwamanzi okuhambelanayo kungcono. Xa i-viscosity idlula i-100,000, umphumo we-viscosity ekugcinweni kwamanzi ayikho kakhulu.
7. Ziziphi iimpawu eziphambili zezobugcisa ze-hydroxypropyl methylcellulose (HPMC)?
——Impendulo: Umxholo we-Hydroxypropyl kunye ne-viscosity, abaninzi abasebenzisi bayayikhathalela ezi zikhombisi zimbini. Ukuphakama komxholo we-hydroxypropyl, ngcono ukugcinwa kwamanzi. I-viscosity ephezulu, ukugcinwa kwamanzi, ngokumalunga (kunokuba kuphelele) ngcono, kunye ne-viscosity ephezulu, ukusetyenziswa okungcono kwi-samente mortar.
8. Ziziphi ezona zixhobo ziphambili ze-hydroxypropyl methylcellulose (HPMC)?
—— A: Izinto eziphambili ze-hydroxypropyl methylcellulose (HPMC): i-cotton ecocekileyo, i-methyl chloride, i-propylene oxide, ezinye izinto ezisetyenziswayo ziquka i-flake alkali, i-asidi, i-toluene, i-isopropanol, njl.
9. Iyiphi indima ephambili ye-HPMC ekusebenziseni i-putty powder, kwaye ngaba kukho nayiphi na i-chemistry?
——Impendulo: I-HPMC inemisebenzi emithathu yokuqina, ukugcinwa kwamanzi kunye nokwakhiwa kwiputty powder. Ukuqina: I-Cellulose inokugqithwa ukuze inqunyanyiswe, gcina isisombululo esifanayo kwaye singaguquguquki, kwaye uxhathise ukugoba. Ukugcinwa kwamanzi: Yenza i-putty powder yome kancinci, kwaye uncedise ukuphendula kwe-ash calcium phantsi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inefuthe lokuthambisa, elinokwenza ukuba i-putty powder ibe nokusebenza kakuhle. I-HPMC ayithathi nxaxheba kuyo nayiphi na i-chemical reaction kwaye idlala indima encedisayo kuphela. Ukongeza amanzi kwi-putty powder kwaye uyibeke eludongeni yi-chemical reaction. Ngenxa yokubunjwa kwezinto ezintsha, thabatha i-putty powder eludongeni eludongeni, ugaye ube ngumgubo, kwaye uyisebenzise kwakhona. Ayiyi kusebenza, kuba izinto ezintsha (i-calcium carbonate) zenziwe. ) phezulu. Amalungu aphambili omgubo we-ash calcium ngala: umxube weCa(OH)2, iCaO kunye nentwana yeCaCO3, 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 kwaye incedisa ukusabela okungcono kwe-ash calcium, kwaye ayithathi nxaxheba kuyo nayiphi na impendulo ngokwayo.
10. I-HPMC i-non-ionic cellulose ether, ngoko yintoni i-non-ionic?
- Impendulo: Ngokwemiqathango ye-layman, i-non-ion zizinto ezingenayo i-ayoni emanzini. Ionization ibhekisela kwinkqubo apho i-electrolyte idityaniswe ngayo ibe yi-ion ehlawuliswayo yamahhala kwi-solvent ethile (njengamanzi, utywala). Ngokomzekelo, i-sodium chloride (i-NaCl), ityuwa edliwayo yonke imihla, inyibilika emanzini kwaye i-ionizes ukuvelisa ngokukhululekileyo i-sodium ion (Na +) ehlawuliswa kakuhle kunye ne-chloride ion (Cl) ehlawuliswa kakubi. Oko kukuthi, xa i-HPMC ifakwe emanzini, ayidibanisi kwii-ion ezihlawuliswayo, kodwa ikhona ngendlela yeemolekyuli.
Ixesha lokuposa: Oct-17-2022