1, yintoni eyona nto isetyenziswa kakhulu yi-hydroxypropyl methyl cellulose (HPMC)?
Impendulo:I-HPMCIsetyenziswa kakhulu kwizixhobo zokwakha, iipeyinti, iiresini zokwenziwa, iiseramikhi, amayeza, ukutya, ilaphu, ezolimo, izinto zokuthambisa, icuba kunye neminye imboni. I-HPMC inokwahlulwahlulwa ibe: umgangatho wokwakha, umgangatho wokutya kunye nomgangatho wezonyango ngokwendlela esetyenziswa ngayo. Okwangoku, into eyenziwe ekhaya ikakhulu yinqanaba lokwakha, kwinqanaba lokwakha, ubungakanani bomgubo we-putty bukhulu kakhulu, malunga ne-90% isetyenziselwa ukwenza umgubo we-putty, enye iseleyo isetyenziselwa ukwenza umdaka wesamente kunye neglu.
2, i-hydroxypropyl methyl cellulose (HPMC) yahlulwe yaba ziintlobo ngeentlobo, yintoni umahluko phakathi kokusetyenziswa kwayo?
Impendulo: I-HPMC inokwahlulwa ibe ziimveliso ezinyibilikayo ngoko nangoko kunye nezinyibilikayo ngoko nangoko, emanzini abandayo zisasazeka ngokukhawuleza, zinyamalale emanzini, ngeli xesha ulwelo alunazo ii-viscosity, kuba i-HPMC isasazeka nje emanzini, akukho kunyibilika kokwenyani. Malunga nemizuzu emi-2, i-viscosity yolwelo iyanda kancinci kancinci, yenza i-colloid ebonakalayo ethambileyo. Iimveliso ezinyibilikayo ngobushushu, kwi-agglomeration yamanzi abandayo, zinokuba emanzini ashushu, zisasazeke ngokukhawuleza, zinyamalale emanzini ashushu, de ubushushu buwehlele kubushushu obuthile, i-viscosity ivele kancinci, de kube kusekwe i-colloid ebonakalayo ethambileyo. Uhlobo olunyibilikayo ngobushushu lungasetyenziswa kuphela kwi-putty powder kunye ne-mortar, kwi-glue engamanzi kunye ne-coating, kunokuvela i-agglomeration phenomenon, ayinakusetyenziswa. Imodeli yokunyibilikisa ngoko nangoko, umda wokusetyenziswa ubanzi kancinci, kwi-be bored with child powder kunye ne-mortar, kwaye kwi-glue engamanzi kunye ne-coating, zonke zingasetyenziswa, azinanto ithintelayo.
3, iindlela zokunyibilikisa i-hydroxypropyl methyl cellulose (HPMC) zinazo ezo?
– impendulo: indlela yokunyibilikisa amanzi ashushu: kuba i-HPMC ayinyibiliki emanzini ashushu, ngoko ke i-HPMC yasekuqaleni inokusasazwa ngokulinganayo emanzini ashushu, ize inyibilike ngokukhawuleza xa iphola, iindlela ezimbini eziqhelekileyo zichazwa ngolu hlobo lulandelayo:
1) Zalisa isitya ngamanzi ashushu kangangoko ufuna uze usifudumeze ukuya kuthi ga kwi-70℃. I-Hydroxypropyl methyl cellulose yongezwa kancinci kancinci xa ixutywa kancinci, ize i-HPMC intante phezu kwamanzi, ize emva koko idale i-slurry, epholiswa xa ixutywa.
2) Yongeza i-1/3 okanye i-2/3 yamanzi afunekayo kwisikhongozeli uze uyifudumeze ukuya kuma-70°C. Yisasaze i-HPMC ngokwendlela yoku-1) ukulungiselela i-slurry yamanzi ashushu; Emva koko yongeza amanzi abandayo aseleyo kwi-slurry yamanzi ashushu uze upholise umxube emva kokuwuxuba.
Indlela yokuxuba umgubo: Umgubo we-HPMC kunye nenani elikhulu lezinye izithako ze-powdery, zixutywe ngokupheleleyo ne-blender, uze wongeze amanzi ukuze zinyibilike, ngeli xesha i-HPMC inokunyibilika, kwaye ingadibani, kuba ikona nganye encinci, umgubo omncinci we-HPMC kuphela, amanzi aya kunyibilika ngoko nangoko. – Abavelisi be-putty powder kunye ne-mortar basebenzisa le ndlela. [I-Hydroxypropyl methyl cellulose (HPMC) isetyenziswa njenge-agent yokutyebisa kunye ne-agent yokugcina amanzi kwi-putty powder mortar.
4, indlela yokufumanisa umgangatho we-hydroxypropyl methyl cellulose (HPMC) elula kwaye eqondakalayo?
Impendulo: (1) ubumhlophe: nangona ubumhlophe bungenakukwazi ukumisela ukuba i-HPMC ilungile na, kwaye ukuba yongezwa kwinkqubo yokuvelisa i-whitener, iya kuchaphazela umgangatho wayo. Nangona kunjalo, uninzi lweemveliso ezilungileyo zinobumhlophe obuhle. (2) ubuncinci: ubuncinci be-HPMC buhlala bungama-80 mesh kunye ne-100 mesh, i-120 injongo ingaphantsi, i-Hebei HPMC ikakhulu ingama-80 mesh, okukhona ubuncinci, ngokubanzi, kokukhona kungcono. (3) ukudluliselwa: i-hydroxypropyl methyl cellulose (HPMC) emanzini, ukwakheka kwe-colloid ecacileyo, jonga ukudluliselwa kwayo, kokukhona ukudluliselwa kwayo kukhulu, izinto ezinganyibilikiyo ngaphakathi zincinci. Ukudluliselwa kwe-reactor ethe nkqo ngokubanzi kulungile, kwaye oko kwe-reactor ethe nkqo kubi, kodwa akuthethi ukuba umgangatho wokuveliswa kwe-reactor ethe nkqo ungcono kunowe-reactor ethe nkqo. Kukho izinto ezininzi zokumisela umgangatho wemveliso. (4) Ubungakanani: okukhona umlinganiselo umkhulu, kokukhona ubunzima bungcono. Kunokuba nkulu, kuba ngaphakathi komxholo wesiseko se-hydroxyl propyl uphezulu, umxholo wesiseko se-hydroxyl propyl uphezulu, ukukhusela amanzi ukuze afune ngcono.
5, i-hydroxypropyl methyl cellulose (HPMC) viscosity ifanelekile ngakumbi?
– impendulo: ukuba udiniwe ngumgubo womntwana kulungile ngokuqhelekileyo yi-100 lamawaka, eminye iphakame kunemfuneko kwi-mortar, ufuna amandla okusebenzisa ayi-150 lamawaka. Ngaphezu koko, i-HPMC yeyona ndima ibalulekileyo yokugcina amanzi, ilandelwa kukuqina. Kwi-putty powder, lo gama nje ukugcina amanzi kulungile, i-viscosity iphantsi (7-80 lamawaka), kunokwenzeka, ewe, i-viscosity inkulu, ukugcinwa kwamanzi kungcono, xa i-viscosity ingaphezulu kwe-100 lamawaka, i-viscosity yokugcina amanzi ayininzi kangako.
6, i-hydroxypropyl methyl cellulose (HPMC) zeziphi izalathisi zobugcisa eziphambili?
Impendulo: Ubungakanani beHydroxypropyl kunye ne-viscosity, uninzi lwabasebenzisi lukhathalele ezi mpawu zimbini. Ubungakanani beHydroxypropyl buphezulu, ukugcinwa kwamanzi ngokubanzi kungcono. Ubungakanani, ukugcinwa kwamanzi, isihlobo (kodwa kungekhona ngokupheleleyo) nako kungcono, kwaye ubuninzi, i-samente mortar kungcono ukuyisebenzisa.
7, i-hydroxypropyl methyl cellulose (HPMC) zeziphi izinto eziphambili zokwenza imveliso?
Impendulo: hydroxypropyl methyl cellulose (HPMC) izinto eziphambili ezisetyenziswayo: umqhaphu ocoliweyo, i-chloromethane, i-propylene oxide, ezinye izinto ezisetyenziswayo, i-tablet alkali, i-asidi, i-toluene, i-isopropyl alcohol njalo njalo.
8, HPMC ekusetyenzisweni komgubo we-putty, indima ephambili, ingaba ukwenzeka kwe-chemistry?
Impendulo: I-HPMC kwi-putty powder, ukuqina, amanzi kunye nokwakhiwa kweendima ezintathu. Ukuqina: i-cellulose inokujiya ide imiswe, ukuze isisombululo sihlale silingana phezulu nasezantsi indima yokuxhoma okuchasene nokuhamba kwamanzi. Ukugcinwa kwamanzi: yenza i-putty powder yome kancinci, i-calcium engwevu encedisayo kwisenzo sokusabela kwamanzi. Ukwakhiwa: i-cellulose lubrication, inokwenza i-putty powder ibe nolwakhiwo oluhle. I-HPMC ayithathi nxaxheba kuyo nayiphi na i-chemical reactions, kodwa idlala indima exhasayo kuphela. I-putty powder kunye namanzi, eludongeni, yi-chemical reaction, ngenxa yokuveliswa kwezinto ezintsha, udonga lwe-putty powder luyehla lusuka eludongeni, lucolwe lube ngumgubo, luze lusetyenziswe, alulunganga, kuba lwenze into entsha (i-calcium carbonate). Eyona nto iphambili eyenziwe ngomgubo we-calcium ongwevu ngumxube we-Ca(OH)2,CaO kunye nenani elincinci le-CaCO3,CaO+H2O=Ca(OH)2 — Ca(OH)2+CO2=CaCO3↓+H2O I-calcium engwevu emanzini nasemoyeni phantsi kwesenzo se-CO2, i-calcium carbonate, kunye namanzi e-HPMC kuphela, inceda i-calcium engwevu ibe ngcono, eyayo ayizange ithathe inxaxheba kuyo nayiphi na impendulo.
9. I-HPMC ether ye-non-ionic cellulose, ngoko ke yintoni i-non-ionic?
A: Ngokubanzi, ii-non-ions zizinto ezingayiyoni emanzini. Ionization kukwahlukana kwe-electrolyte ibe zii-ion ezitshajiweyo ezikhululekileyo kwi-solvent ethile, njengamanzi okanye utywala. Umzekelo, ityuwa esiyityayo yonke imihla — i-sodium chloride (NaCl) iyanyibilika emanzini kwaye i-ionizes ukuvelisa ii-ion ze-sodium ezihambayo ngokukhululekileyo (Na+) ezine-charge entle kunye nee-ion ze-chloride (Cl) ezine-charge engalunganga. Oko kukuthi, i-HPMC emanzini ayihlukani ibe zii-ion ezitshajiweyo, kodwa ikhona njengee-molecule.
10. Yintoni enxulumene nobushushu bejeli ye-hydroxypropyl methyl cellulose?
– Impendulo: Ubushushu bejeliI-HPMCinxulumene nomxholo we-methoxyl, okukhona umxholo we-methoxyl uphantsi ↓, kokukhona ubushushu bejeli buphezulu.
11, i-putty powder powder kunye ne-HPMC akukho budlelwane?
Impendulo: i-putty powder drop powder ikakhulu kwaye umgangatho we-ash calcium unobudlelwane obukhulu kakhulu, kwaye i-HPMC ayinabudlelwane obukhulu kakhulu. Umxholo ophantsi we-calcium ye-grey calcium kunye nomlinganiselo ongafanelekanga we-CaO kunye ne-Ca(OH)2 kwi-grey calcium kuya kubangela ukuhla kwe-powder. Ukuba kukho ubudlelwane obuncinci ne-HPMC, ngoko ukugcinwa kwamanzi kwe-HPMC kuphantsi, kuya kubangela ne-powder.
12, yintoni umahluko phakathi kwe-hydroxypropyl methyl cellulose namanzi abandayo anyibilikayo kunye namanzi ashushu anyibilikayo kwinkqubo yemveliso?
– Impendulo: Uhlobo lwesisombululo samanzi abandayo lweHPMC lusetyenziswa emva konyango lomphezulu we-glyoxal, lufakwa emanzini abandayo asasazeka ngokukhawuleza, kodwa alunyibiliki ngokwenene, i-viscosity iyanda, iyanyibilika. Uhlobo olunyibilikayo aluzange luphathwe nge-glyoxal kumphezulu. Ubungakanani be-glyoxal bukhulu, ukusasazeka kuyakhawuleza, kodwa i-viscosity iyacotha, ubuninzi buncinci, ngokuchaseneyo.
13, ivumba le-hydroxypropyl methyl cellulose (HPMC) linjani?
– Impendulo: I-HPMC eveliswa ngendlela yesinyibilikisi yenziwe nge-toluene kunye ne-isopropyl alcohol. Ukuba ukuhlamba akukuhle kakhulu, kuya kubakho incasa eseleyo.
14, iindlela ezahlukeneyo zokusetyenziswa, indlela yokukhetha i-hydroxypropyl methyl cellulose (HPMC) efanelekileyo?
– impendulo: dikiwe kukusetyenziswa komgubo womntwana: imfuneko iphantsi, i-viscosity yi-100 lamawaka, kulungile, kubalulekile ukukhusela amanzi ukuze ube kufutshane. Ukufakwa kwe-mortar: iimfuno eziphezulu, iimfuno ze-viscosity ephezulu, i-150 lamawaka ukuze ube ngcono. Ukufakwa kweglue: imfuneko yeemveliso ezikhawulezileyo, i-viscosity ephezulu.
15. Yintoni igama eliyimfihlo 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, i-Cellulose, i-2-hydroxypropyl methyl i-Cellulose ether.
16. I-HPMC ekusebenziseni umgubo we-putty, i-putty powder bubble yintoni isizathu?
Impendulo: I-HPMC kwi-putty powder, ukutyeba, amanzi kunye nokwakhiwa kwemisebenzi emithathu. Ayithathi nxaxheba kuyo nayiphi na impendulo. Izizathu zamaqamza: 1, amanzi amaninzi. 2, umzantsi awomile, phezulu komaleko wokukrwela, kulula nokuwadubula.
17. Yintoni umahluko phakathi kwe-HPMC kunye ne-MC?
– Impendulo: I-MC yi-methyl cellulose, eyenziwe nge-cellulose ether ngothotho lwee-reactions kunye ne-methane chloride njenge-etherifying agent emva kokuba umqhaphu ocociweyo uphathwe nge-alkali. Ngokubanzi, inqanaba lokutshintshwa yi-1.6~2.0, kwaye ukunyibilika kuyahluka ngokwenqanaba lokutshintshwa. Ixhomekeke kwi-nonion cellulose ether.
(1) Ukugcinwa kwamanzi kwe-methyl cellulose kuxhomekeke kubungakanani bayo bokongeza, ukuxinana, ukucoleka kwamasuntswana kunye nesantya sokunyibilika. Ngokubanzi ukongeza ubungakanani obukhulu, ukucoleka okuncinci, ukucoleka, izinga lokugcina amanzi liphezulu. Phakathi kwazo, ubungakanani be-additive bunempembelelo enkulu ekugcinweni kwamanzi, kwaye ukucoleka akulingani nokugcinwa kwamanzi. Izinga lokunyibilika lixhomekeke kakhulu kwinqanaba lokuguqulwa komphezulu kunye nokucoleka kwamasuntswana e-cellulose. Kwii-ethers ezininzi ze-cellulose ezingentla, izinga lokugcina amanzi le-methyl cellulose kunye ne-hydroxypropyl methyl cellulose liphezulu.
(2) I-Methyl cellulose iyanyibilika emanzini abandayo, okunzima ukuyinyibilikisa emanzini ashushu. Isisombululo sayo samanzi sizinzile kakhulu ngaphakathi kwe-pH=3~12. Ihambelana kakuhle nesitatshi, i-guanidine gum kunye nezinye izinto ezininzi ezibangela ukubola. Ukubola kwenzeka xa ubushushu bufikelela kubushushu bokubola.
(3) Utshintsho lobushushu luya kuchaphazela kakhulu izinga lokugcina amanzi le-methyl cellulose. Ngokubanzi, xa ubushushu buphezulu, kokukhona ukugcinwa kwamanzi kubi. Ukuba ubushushu be-mortar budlula i-40℃, ukugcinwa kwamanzi kwe-methyl cellulose kuya kuba kubi kakhulu, nto leyo echaphazela kakhulu ukwakhiwa kwe-mortar.
(4) I-Methyl cellulose inempembelelo ecacileyo ekwakheni nasekunamatheleni kwe-mortar. Igama elithi "Adhesion" apha libhekisa ekunamatheleni okuvayo ngumsebenzi phakathi kwesixhobo kunye ne-substrate yodonga, oko kukuthi ukumelana nokucheba kwe-mortar. Ukuncamathelisa kukhulu, ukumelana nokucheba kwe-mortar kukhulu, amandla afunekayo kubasebenzi kwinkqubo yokusetyenziswa nawo makhulu, kwaye ukwakhiwa kwe-mortar kuphantsi. Kwiimveliso ze-cellulose ether, ukunamathela kwe-methyl cellulose kukwinqanaba eliphakathi.
I-HPMC ye-hydroxypropyl methyl cellulose, ihlanjululwa ngekotoni emva konyango lwe-alkali, nge-propylene oxide kunye ne-chloromethane njenge-ether e-etherifying, ngokusebenzisa uthotho lweempendulo kwaye yenziwe nge-non-ionic cellulose mixed ether. Umgangatho wokutshintshwa ngokubanzi yi-1.2 ~ 2.0. Iimpawu zayo ziyahluka ngokwesilinganiso somxholo we-methoxy kunye ne-hydroxypropyl.
(1) I-Hydroxypropyl methyl cellulose inyibilika lula emanzini abandayo, nto leyo enzima ukuyinyibilikisa emanzini ashushu. Nangona kunjalo, ubushushu bayo be-gelation emanzini ashushu buphezulu ngokucacileyo kunobo be-methyl cellulose. Ukunyibilika kwe-methyl cellulose emanzini abandayo nako kuphuculwe kakhulu.
(2) Ubunzima be-hydroxypropyl methyl cellulose bunxulumene nobunzima bayo beemolekyuli, kwaye okukhona ubunzima be-molekyuli buphezulu, kokukhona ubuninzi be-viscosity. Ubushushu bukwachaphazela nobunzima be-viscosity. Ubunzima be-viscosity buyancipha njengoko ubushushu busanda. Kodwa ubushushu bayo obuphezulu buphantsi kune-methyl cellulose. Isisombululo sizinzile xa sigcinwe kubushushu begumbi.
(3) I-Hydroxypropyl methyl cellulose izinzile kwi-asidi nakwisiseko, kwaye isisombululo sayo samanzi sizinzile kakhulu kuluhlu lwe-pH=2~12. I-Caustic soda kunye namanzi ekalika azinampembelelo ingako kwiipropati zayo, kodwa i-alkali inokukhawulezisa izinga layo lokunyibilika kwaye iphucule i-viscosity. I-Hydroxypropyl methyl cellulose izinzile kwi-viscosity eqhelekileyo, kodwa xa uxinzelelo lwe-viscosity ye-hydroxypropyl methyl cellulose ludla ngokwanda.
(4) Ukugcinwa kwamanzi kwe-hydroxypropyl methyl cellulose kuxhomekeke kwidosi kunye ne-viscosity yayo, kwaye izinga lokugcinwa kwamanzi kwe-hydroxypropyl methyl cellulose liphezulu kunele-methyl cellulose kwidosi efanayo.
(5) I-Hydroxypropyl methyl cellulose ingaxutywa nee-polymer compounds ezinyibilikayo emanzini ukuze zibe yisisombululo esifanayo nesinobukrakra. Ezifana ne-polyvinyl alcohol, i-starch ether, i-vegetable glue njalo njalo.
(6) Ukunamathela kwe-hydroxypropyl methyl cellulose kulwakhiwo lwe-mortar kuphezulu kunoko kwe-methyl cellulose.
(7) I-Hydroxypropyl methyl cellulose inokumelana okungcono kwee-enzyme kune-methyl cellulose, kwaye amathuba okubola kwe-enzyme yesisombululo sayo aphantsi kune-methyl cellulose.
18. Yintoni ekufuneka iqwalaselwe xa kusetyenziswa ulwalamano oluphakathi kwe-viscosity kunye nobushushu be-HPMC?
Impendulo: UKUQINISEKISA kweI-HPMCihambelana ngokuphambeneyo nobushushu, oko kukuthi, i-viscosity iyanda xa ubushushu buhla. Xa sithetha nge-viscosity yemveliso, sithetha nge-viscosity ye-2% yemveliso emanzini kwi-20 degrees Celsius.
Kwindlela yokusebenza, kwiindawo ezinomahluko omkhulu kubushushu phakathi kwehlobo nobusika, kufuneka kuqatshelwe ukuba kucetyiswa ukusebenzisa i-viscosity ephantsi ebusika, nto leyo elungele ukwakhiwa. Ngaphandle koko, xa ubushushu buphantsi, i-viscosity ye-cellulose iya kwanda, kwaye xa ikrwelwa, imvakalelo iya kuba nzima.
I-viscosity ephakathi: 75000-100000 isetyenziselwa ikakhulu i-putty.
Isizathu: Ukugcina amanzi kakuhle.
I-viscosity ephezulu:150000-200000 isetyenziswa kakhulu kwi-polystyrene particle insulation mortar irabha powder kunye ne-vitrified beads insulation mortar.
Isizathu: i-viscosity ephezulu, i-mortar ayilula ukuyilahla, i-flow hanging, iphucula ulwakhiwo.
Kodwa ngokubanzi, okukhona i-viscosity iphezulu, kokukhona ukugcinwa kwamanzi kuphucuka, ngoko ke iifektri ezininzi ze-dry mortar, xa kujongwa iindleko, zisebenzisa i-medium viscosity cellulose (75000-100000) ukutshintsha i-medium and low viscosity cellulose (20000-40000) ukunciphisa ubungakanani bokongeza.
Ixesha leposi: Epreli-26-2024