1. Yintoni eyona nto iphambili esetyenziswa ngayoi-hydroxypropyl methylcellulose (HPMC)?
I-Hydroxypropyl methylcellulose isetyenziswa kakhulu kwizixhobo zokwakha, kwiingubo, kwiiresini zokwenziwa, kwiiseramikhi, kumayeza, ekutyeni, kwimpahla, kwezolimo, kwizinto zokuthambisa, kwicuba nakwamanye amashishini. I-Hydroxypropyl methylcellulose inokwahlulwa ibe ziinqanaba lokwakha, izinga lokutya kunye nenqanaba leyeza ngokwendlela esetyenziswa ngayo. Okwangoku, uninzi lweemveliso zasekhaya zikumgangatho wokwakha. Kwinqanaba lokwakha, i-putty powder isetyenziswa kakhulu, malunga ne-90% isetyenziselwa i-putty powder, kwaye enye isetyenziselwa i-samente mortar kunye ne-glue.
2. Kukho iintlobo ezahlukeneyo ze-hydroxypropyl methylcellulose (HPMC), kwaye yintoni umahluko kwindlela ezisetyenziswa ngayo?
I-HPMC inokwahlulwahlulwa ibe yi-instant type kunye ne-hot-dissolution type. Iimveliso ze-instant type ziyasasazeka ngokukhawuleza xa zidibana namanzi abandayo kwaye zinyamalale emanzini. Ngeli xesha, ulwelo aluna-viscosity kuba i-HPMC isasazeka kuphela emanzini ngaphandle kokunyibilika ngokwenene. Emva kwemizuzu emi-2, i-viscosity yolwelo iyanda kancinci kancinci, yenze i-transparent viscous colloid. Iimveliso ze-hot-melt, xa zidibene namanzi abandayo, zinokusasazeka ngokukhawuleza emanzini ashushu kwaye zinyamalale emanzini ashushu. Xa ubushushu buhla bufikelela kubushushu obuthile, i-viscosity iya kubonakala kancinci ide yenze i-transparent viscous colloid. Uhlobo lwe-hot-melt lunokusetyenziswa kuphela kwi-putty powder kunye ne-mortar. Kwi-liquid glue kunye ne-peyinti, kuya kubakho i-grouping phenomenon kwaye ayinakusetyenziswa. Uhlobo lwe-instant lunoluhlu olubanzi lwezicelo. Lunokusetyenziswa kwi-putty powder kunye ne-mortar, kunye ne-liquid glue kunye ne-peyinti, ngaphandle kweziphazamiso.
3. Ziziphi iindlela zokunyibilikisa i-hydroxypropyl methylcellulose (HPMC)?
Indlela yokunyibilikisa amanzi ashushu: Ekubeni i-HPMC inganyibiliki emanzini ashushu, i-HPMC ingasasazeka ngokulinganayo emanzini ashushu kwinqanaba lokuqala, ize inyibilike ngokukhawuleza xa ipholile. Iindlela ezimbini eziqhelekileyo zichazwe ngolu hlobo lulandelayo:
1) Faka amanzi ashushu afunekayo kwisitya uze uwafudumeze ukuya kuthi ga kwi-70°C. I-hydroxypropyl methylcellulose yongezwa kancinci kancinci xa ixutywa kancinci, ekuqaleni i-HPMC yadada phezu kwamanzi, yaza yakha i-slurry kancinci kancinci, eyapholiswa xa ixutywa.
2) Yongeza i-1/3 okanye i-2/3 yobungakanani bamanzi obufunekayo kwisikhongozeli, uze uyifudumeze ukuya kuma-70 ° C, ngokwendlela ye-1), sasaza i-HPMC ukulungiselela i-slurry yamanzi ashushu; emva koko yongeza amanzi abandayo aseleyo kwi-slurry yamanzi ashushu, umxube upholiswe emva kokuxutywa.
Indlela yokuxuba umgubo: xuba umgubo we-HPMC kunye nezinye izinto ezininzi ezinjengomgubo, xuba kakuhle ngomxube, uze wongeze amanzi ukuze unyibilike, emva koko i-HPMC inokunyibilika ngeli xesha ngaphandle kokuhlanganiswa, kuba kukho i-HPMC encinci kwikona nganye encinci. Umgubo uya kunyibilika ngoko nangoko xa udibana namanzi. ——Abavelisi be-Putty powder kunye ne-mortar basebenzisa le ndlela. [I-Hydroxypropyl methylcellulose (HPMC) isetyenziswa njenge-thickener kunye ne-arhente yokugcina amanzi kwi-putty powder mortar.]
4. Ungawugweba njani umgangatho we-hydroxypropyl methylcellulose (HPMC) ngokulula nangokuqondakalayo?
(1) Ubumhlophe: Nangona ubumhlophe bungenakukwazi ukumisela ukuba kulula na ukusebenzisa i-HPMC, kwaye ukuba kongezwa izinto zokwenza mhlophe ngexesha lenkqubo yemveliso, kuya kuchaphazela umgangatho wayo. Nangona kunjalo, uninzi lweemveliso ezilungileyo zimhlophe kakuhle.
(2) Ubunzima: Ubunzima be-HPMC bune-mesh engama-80 kunye ne-mesh eyi-100, i-mesh eyi-120 incinci, kwaye uninzi lwe-HPMC oluveliswa eHebei lune-mesh engama-80. Okukhona ubuncwane buncinci, ngokubanzi, kokukhona bungcono.
(3) Ukudluliselwa: Faka i-hydroxypropyl methylcellulose (HPMC) emanzini ukuze wenze i-colloid ecacileyo, kwaye ujonge ukudluliselwa kwayo. Okukhona ukudluliselwa kwayo kuphezulu, kokukhona kungcono, nto leyo ebonisa ukuba akukho nto inganyibilikiyo kuyo. Ukungena kwee-reactors ezithe nkqo ngokubanzi kulungile, kwaye oko kwee-reactors ezithe nkqo kubi, kodwa oko akuthethi ukuba umgangatho wee-reactors ezithe nkqo ungcono kunowee-reactors ezithe nkqo, kwaye umgangatho wemveliso umiselwa zizinto ezininzi.
(4) Ubunzima obuthile: Okukhona ubunzima obuthile bukhulu, kokukhona ubunzima bukhulu. Ubunzima bukhulu, ngokubanzi kuba umxholo weqela le-hydroxypropyl kuyo uphezulu, kwaye umxholo weqela le-hydroxypropyl uphezulu, ukugcinwa kwamanzi kungcono.
5. Ingakanani i-hydroxypropyl methylcellulose (HPMC) kwi-putty powder?
Ubungakanani be-HPMC obusetyenziswayo kwiindlela ezisebenzayo buyahluka ngokuxhomekeke kwimozulu, ubushushu, umgangatho we-calcium yomlotha yasekuhlaleni, ifomula ye-putty powder kunye "nomgangatho ofunekayo kubathengi". Ngokubanzi, phakathi kwe-4 kg kunye ne-5 kg. Umzekelo: uninzi lwe-putty powder eBeijing yi-5 kg; uninzi lwe-putty powder eGuizhou yi-5 kg ehlotyeni kunye ne-4.5 kg ebusika; ubungakanani be-putty powder eYunnan buncinci, ngokubanzi ukusuka kwi-3 kg ukuya kwi-4 kg, njl.njl.
6. Ithini i-viscosity efanelekileyo ye-hydroxypropyl methylcellulose (HPMC)?
I-putty powder ngokubanzi yanele i-100,000 yuan, kwaye iimfuno ze-mortar ziphezulu, kwaye i-150,000 yuan iyafuneka ukuze kube lula ukuyisebenzisa. Ngaphezu koko, owona msebenzi ubalulekileyo we-HPMC kukugcina amanzi, kulandele ukuqina. Kwi-putty powder, ukuba nje ukugcinwa kwamanzi kulungile kwaye i-viscosity iphantsi (70,000-80,000), kunokwenzeka. Kakade ke, xa i-viscosity iphezulu, kokukhona i-viscosity iphezulu, kokukhona i-viscosity ingaphezulu kwe-100,000, i-viscosity iya kuchaphazela ukugcinwa kwamanzi. Akusekho kakhulu.
7. Ziziphi izalathisi eziphambili zobugcisa ze-hydroxypropyl methylcellulose (HPMC)?
Ubungakanani be-hydroxypropyl kunye ne-viscosity, uninzi lwabasebenzisi luxhalabile ngezi mpawu zimbini. Abo banomxholo we-hydroxypropyl ophezulu bahlala benokugcina amanzi okungcono. Eyo i-viscosity ephezulu inokugcina amanzi okungcono, ngokwentelekiso (hayi ngokupheleleyo), kwaye leyo i-viscosity ephezulu ingcono ukusetyenziswa kwi-samente mortar.
8. Zeziphi izinto eziphambili zokwenza imvelisoi-hydroxypropyl methylcellulose (HPMC)?
Izinto eziphambili ze-hydroxypropyl methylcellulose (HPMC): umqhaphu ocoliweyo, i-methyl chloride, i-propylene oxide, kunye nezinye izinto ezikrwada, i-caustic soda, i-asidi, i-toluene, i-isopropanol, njl.
9. Yintoni umsebenzi ophambili wokusetyenziswa kwe-HPMC kwi-putty powder, kwaye ngaba kwenzeka ngokweekhemikhali?
Kwi-putty powder, i-HPMC idlala iindima ezintathu zokutyeba, ukugcina amanzi kunye nokwakha. Ukutyeba: I-Cellulose inokwenziwa ibe nkulu ukuze ixhome kwaye igcine isisombululo sihambelana phezulu nasezantsi, kwaye imelane nokuwa. Ukugcinwa kwamanzi: yenza i-putty powder yome kancinci, kwaye incede i-ash calcium ukuba isabele phantsi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inefuthe lokuthambisa, elinokwenza i-putty powder ibe nokwakhiwa okuhle. I-HPMC ayithathi nxaxheba kuyo nayiphi na i-chemical reactions, kodwa idlala indima yokuncedisa kuphela. Ukongeza amanzi kwi-putty powder kwaye uyibeke eludongeni yi-chemical reaction, kuba izinto ezintsha ziyavela. Ukuba ususa i-putty powder eludongeni eludongeni, uyigaye ibe yi-powder, kwaye uyisebenzise kwakhona, ayizukusebenza kuba izinto ezintsha (i-calcium carbonate) zenziwe.) Izinto eziphambili ze-ash calcium powder zezi: umxube we-Ca (OH)2, i-Ca O kunye nenani elincinci le-CaCO3, i-CaO+H2O=Ca (OH)2—Ca(OH)2+CO2=CaCO3↓+H2O I-ash calcium ikwimanzi nasemmoyeni Phantsi kwesenzo se-CO2, i-calcium carbonate iveliswa, ngelixa i-HPMC igcina amanzi kuphela, inceda ukusabela ngcono kwe-ash calcium, kwaye ayithathi nxaxheba kuyo nayiphi na impendulo ngokwayo.
10. I-HPMC yi-non-ionic cellulose ether, ngoko ke yintoni i-non-ionic?
Ngokwendlela eqhelekileyo, ii-non-ions zizinto ezingayiyoni emanzini. I-ionization ibhekisa kwinkqubo apho i-electrolyte idityaniswe khona ibe zii-ion ezitshajiweyo ezinokuhamba ngokukhululekileyo kwisinyibilikisi esithile (njengamanzi, utywala). Umzekelo, i-sodium chloride (NaCl), ityuwa esiyityayo yonke imihla, iyanyibilika emanzini kwaye i-ionized ukuvelisa ii-ion ze-sodium ezishukumayo ngokukhululekileyo (Na+) ezitshajiweyo kakuhle kunye nee-ion ze-chloride (Cl) ezitshajiweyo kakubi. Oko kukuthi, xaI-HPMCxa ibekwe emanzini, ayizukuhlukana ibe zii-ion ezitshajiweyo, kodwa ikhona ngohlobo lweemolekyuli.
Ixesha leposi: Epreli-28-2024