1. Yintoni eyona nto isetyenziswa kakhulu yi-hydroxypropyl methylcellulose (HPMC)?
I-HPMC isetyenziswa kakhulu kwizixhobo zokwakha, ii-coating, ii-synthetic resins, ii-ceramics, amayeza, ukutya, amalaphu, ezolimo, izinto zokuthambisa, icuba kunye namanye amashishini. I-HPMC inokwahlulwahlulwa ibe yi-design grade, food grade kunye ne-pharmacy grade ngokwenjongo. Okwangoku, uninzi lweemveliso zasekhaya zi-design grade. Kwi-design grade, 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. Imveliso ye-instant type isasazeka ngokukhawuleza emanzini abandayo ize inyamalale emanzini. Ngeli xesha, ulwelo aluna-viscosity kuba i-HPMC isasazeka kuphela emanzini ngaphandle kokunyibilika ngokwenene. Malunga nemizuzu 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, usasaze i-HPMC ngokwendlela ye-1), uze ulungise i-slurry yamanzi ashushu; uze wongeze 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-100 mesh, kwaye i-120 mesh incinci. Uninzi lwe-HPMC oluveliswa eHebei lune-mesh engama-80. Okukhona ubuncwane buncinci, ngokubanzi, kokukhona bungcono.
(3) Ukuhanjiswa kokukhanya: faka i-hydroxypropyl methylcellulose (HPMC) emanzini ukuze wenze i-colloid ecacileyo, kwaye ujonge ukuhanjiswa kokukhanya kwayo. Okukhona ukuhanjiswa kokukhanya kukhulu, kokukhona kungcono, okubonisa ukuba akukho zinto zinganyibilikiyo kakhulu kuyo. . Ukungena kwee-reactors ezithe nkqo ngokubanzi kulungile, kwaye oko kwee-reactors ezithe nkqo kubi, kodwa 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 kwimeko-bume yemozulu, ubushushu, umgangatho we-calcium yomlotha wendawo, 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 eYunnan buncinci, ngokubanzi ukusuka kwi-3 kg ukuya kwi-4 kg, njl.njl.
6. Ithini i-viscosity efanelekileyo ye-hydroxypropyl methylcellulose (HPMC)?
Umgubo wePutty ngokubanzi yi-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 ze-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. ) nazo. Izinto eziphambili ze-ash calcium powder zezi: umxube we-Ca(OH)2, i-CaO kunye ne-CaCO3 encinci, i-CaO+H2O=Ca(OH)2—Ca(OH)2+CO2=CaCO3↓+H2O I-ash calcium ikwi-water and air Phantsi kwe-CO2, i-calcium carbonate iveliswa, ngelixa i-HPMC igcina amanzi kuphela, inceda ukusabela ngcono kwe-ash calcium, kwaye ayithathi nxaxheba kuyo nayiphi na i-reaction ngokwayo.
10. I-HPMC yi-non-ionic cellulose ether, ngoko ke yintoni i-non-ionic?
Ngokwendlela eqhelekileyo, ii-non-ions zizinto ezingayiyo i-ion 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 ezihambayo ngokukhululekileyo (Na+) ezitshajiweyo kakuhle kunye nee-ion ze-chloride (Cl) ezitshajiweyo kakubi. Oko kukuthi, xa i-HPMC ifakwa emanzini, ayizukuhlukana ibe zii-ion ezitshajiweyo, kodwa ikhona kwimo yeemolekyuli.
11. Ingakanani iqondo lobushushu lejeli le-hydroxypropyl methylcellulose elinxulumene nayo?
Ubushushu bejeli ye-HPMC bunxulumene nomxholo wayo we-methoxy, okukhona umxholo we-methoxy uphantsi ↓, kokukhona ubushushu bejeli buphezulu ↑.
12. Ngaba kukho ulwalamano phakathi kokuthontsiza komgubo we-putty kunye ne-HPMC?
Ukulahleka komgubo we-putty powder kunxulumene kakhulu nomgangatho we-ash calcium, kwaye akunanto yakwenza ne-HPMC. Umxholo ophantsi we-calcium we-grey calcium kunye nomlinganiselo ongafanelekanga we-CaO kunye ne-Ca(OH)2 kwi-grey calcium kuya kubangela ukulahleka komgubo. Ukuba inento yokwenza ne-HPMC, ke ukuba i-HPMC ayinamanzi aneleyo, iya kubangela nokulahleka komgubo. Ngezizathu ezithile, nceda ujonge umbuzo 9.
13. Yintoni umahluko phakathi kohlobo lwe-cold-water instant kunye nohlobo lwe-hydroxypropyl methylcellulose olunyibilikayo olushushu kwinkqubo yemveliso?
Uhlobo lwe-HPMC olusebenzisa amanzi abandayo ngokukhawuleza lunyangwa nge-glyoxal, kwaye lusasazeka ngokukhawuleza emanzini abandayo, kodwa alunyibiliki ngokwenene. Lunyibilika kuphela xa i-viscosity isanda. Iintlobo ze-hot melt azinyangwa nge-glyoxal kumphezulu. Ukuba ubungakanani be-glyoxal bukhulu, i-dispersion iya kukhawuleza, kodwa i-viscosity iya kunyuka kancinci, kwaye ukuba ubungakanani buncinci, okuchaseneyo kuya kuba yinyani.
14. Lithini ivumba le-hydroxypropyl methylcellulose (HPMC)?
I-HPMC eveliswa yindlela yokunyibilikisa isebenzisa i-toluene kunye ne-isopropanol njengezinyibilikisi. Ukuba ukuhlamba akukuhle kakhulu, kuya kubakho ivumba elishiyekileyo.
15. Ungayikhetha njani i-hydroxypropyl methylcellulose (HPMC) efanelekileyo ngeenjongo ezahlukeneyo?
Ukusetyenziswa komgubo we-putty: iimfuno ziphantsi, i-viscosity yi-100,000, kwanele, into ebalulekileyo kukugcina amanzi kakuhle. Ukusetyenziswa kodaka: iimfuno eziphezulu, i-viscosity ephezulu, i-150,000 ingcono. Ukusetyenziswa kweglu: iimveliso ezikhawulezileyo ezine-viscosity ephezulu ziyafuneka.
16. Yintoni igama elivela kwi-hydroxypropyl methylcellulose?
I-Hydroxypropyl methyl cellulose, isiNgesi: I-Hydroxypropyl Methyl Cellulose Isifinyezo: I-HPMC okanye i-MHPC Igama elingaqhelekanga: i-hypromellose; I-Cellulose hydroxypropyl methyl ether; I-Hypromellose, I-Cellulose, i-2-hydroxypropylmethyl I-Cellulose ether. I-Cellulose hydroxypropyl methyl ether I-Hyprolose.
17. Ukusetyenziswa kwe-HPMC kwi-putty powder, yintoni isizathu sokuba kubekho amaqamza kwi-putty powder?
Kwi-putty powder, i-HPMC idlala indima ezintathu zokwandisa ukuqina, ukugcina amanzi kunye nokwakha. Musa ukuthatha inxaxheba kuzo naziphi na iimpembelelo. Izizathu zeebhamuza: 1. Beka amanzi amaninzi. 2. Umaleko osezantsi awomile, vele ukrwele omnye umaleko ngaphezulu, kwaye kulula ukuwufaka igwebu.
18. Yintoni ifomula ye-putty powder kwiindonga zangaphakathi nezangaphandle?
Umgubo weputty wodonga lwangaphakathi: icalcium enzima eyi-800KG, i-ash calcium eyi-150KG (i-starch ether, uhlaza olucocekileyo, umhlaba wePengrun, i-citric acid, i-polyacrylamide, njl.njl. inokongezwa ngokufanelekileyo)
Umgubo weputty wodonga lwangaphandle: isamente 350KG icalcium enzima 500KG isanti ye-quartz 150KG umgubo welatex 8-12KG i-cellulose ether 3KG i-starch ether 0.5KG ifayibha yomthi 2KG
19. Yintoni umahluko phakathi kwe-HPMC kunye ne-MC?
I-MC yi-methyl cellulose, eyenziwe nge-cellulose ether ngokunyanga umqhaphu ocoliweyo nge-alkali, kusetyenziswa i-methane chloride njenge-etherification agent, kwaye idlula kuthotho lweempendulo. Ngokubanzi, inqanaba lokutshintshwa yi-1.6 ~ 2.0, kwaye ukunyibilika nako kwahlukile ngamanqanaba ahlukeneyo okutshintshwa. Yeye-non-ionic cellulose ether.
(1) Ukugcinwa kwamanzi kwe-methyl cellulose kuxhomekeke kubungakanani bayo bokongeza, ukuxinana, ukucoleka kwamasuntswana kunye nesantya sokunyibilika. Ngokubanzi, ukuba ubungakanani bokongeza bukhulu, ukucoleka buncinci, kwaye ukucoleka kukhulu, izinga lokugcinwa kwamanzi liphezulu. Phakathi kwazo, ubungakanani bokongeza bunempembelelo enkulu kwisantya sokugcinwa kwamanzi, kwaye inqanaba lokucoleka alihambelani ngokuthe ngqo nenqanaba lokugcinwa kwamanzi. Isantya sokunyibilika sixhomekeke kakhulu kwinqanaba lokuguqulwa komphezulu wamasuntswana e-cellulose kunye nokucoleka kwamasuntswana. Phakathi kwee-ethers ze-cellulose ezingentla, i-methyl cellulose kunye ne-hydroxypropyl methyl cellulose zinamazinga aphezulu okugcinwa kwamanzi.
(2) I-Methylcellulose iyanyibilika emanzini abandayo, kwaye kuya kuba nzima ukuyinyibilikisa emanzini ashushu. Isisombululo sayo samanzi sizinzile kakhulu kuluhlu lwe-pH=3~12. Ihambelana kakuhle nesitatshi, i-guar gum, njl.njl. kunye nezinye izinto ezininzi ezibangela ukunyibilika. Xa ubushushu bufikelela kubushushu be-gelation, i-gelation iyenzeka.
(3) Utshintsho kubushushu luya kuchaphazela kakhulu izinga lokugcina amanzi le-methyl cellulose. Ngokubanzi, xa ubushushu buphezulu, kokukhona ukugcinwa kwamanzi kuba kubi. Ukuba ubushushu be-mortar budlula ama-40°C, ukugcinwa kwamanzi kwe-methyl cellulose kuya kuncipha kakhulu, nto leyo echaphazela kakhulu ukwakhiwa kwe-mortar.
(4) I-Methyl cellulose inefuthe elikhulu ekwakhiweni nasekunamatheleni kwe-mortar. "Ukuncamathela" apha kubhekisa kumandla okuncamathela avakalayo phakathi kwesixhobo sokusebenzisa somsebenzi kunye ne-substrate yodonga, oko kukuthi, ukumelana nokucheba kwe-mortar. Ukuncamathela kuphezulu, ukumelana nokucheba kwe-mortar kukhulu, kwaye amandla afunekayo ngabasebenzi kwinkqubo yokusetyenziswa nawo makhulu, kwaye ukusebenza kokwakhiwa kwe-mortar kuphantsi. Ukunamathela kwe-Methyl cellulose kukwinqanaba eliphakathi kwiimveliso ze-cellulose ether.
I-HPMC yi-hydroxypropyl methylcellulose, eyi-ether exutyiweyo ye-cellulose engeyiyo ionic eyenziwe ngekotoni ecociweyo emva kwe-alkalization, isebenzisa i-propylene oxide kunye ne-methyl chloride njengee-etherification agents, kwaye ngokusebenzisa uthotho lweempendulo. Iqondo lokutshintshwa ngokubanzi yi-1.2 ~ 2.0. Iimpawu zayo zahlukile ngenxa yemilinganiselo eyahlukeneyo yomxholo we-methoxyl kunye nomxholo we-hydroxypropyl.
(1) I-Hydroxypropyl methylcellulose inyibilika lula emanzini abandayo, kwaye iya kujongana nobunzima ekunyibilikeni emanzini ashushu. Kodwa ubushushu bayo be-gelation emanzini ashushu buphezulu kakhulu kunobo be-methyl cellulose. Ukunyibilika emanzini abandayo nako kuphuculwe kakhulu xa kuthelekiswa ne-methyl cellulose.
(2) Ubunzima be-hydroxypropyl methylcellulose bunxulumene nobunzima bayo beemolekyuli, kwaye okukhona ubunzima be-molekyuli bukhulu, kokukhona ubuninzi be-viscosity buphezulu. Ubushushu bukwachaphazela nobunzima bayo, njengoko ubushushu busanda, ubuninzi be-viscosity buyancipha. Nangona kunjalo, ubuninzi be-viscosity bunefuthe eliphantsi lobushushu kune-methyl cellulose. Isisombululo sayo sizinzile xa sigcinwe kubushushu begumbi.
(3) I-Hydroxypropyl methylcellulose izinzile kwi-asidi kunye ne-alkali, kwaye isisombululo sayo samanzi sizinzile kakhulu kuluhlu lwe-pH=2~12. I-Caustic soda kunye namanzi ekalika azinampembelelo ingako ekusebenzeni kwayo, kodwa i-alkali inokukhawulezisa ukunyibilika kwayo kwaye yonyuse i-viscosity yayo. I-Hydroxypropyl methylcellulose izinzile kwi-viscosity eqhelekileyo, kodwa xa uxinzelelo lwe-viscosity ye-hydroxypropyl methylcellulose ludla ngokwanda.
(4) Ukugcinwa kwamanzi kwe-hydroxypropyl methylcellulose kuxhomekeke kubungakanani bayo bokongeza, i-viscosity, njl.njl., kwaye izinga layo lokugcina amanzi phantsi kobungakanani obufanayo bokongeza liphezulu kunele-methyl cellulose.
(5) I-hydroxypropyl methylcellulose ingaxutywa nee-polymer compounds ezinyibilikayo emanzini ukuze zenze isisombululo esifanayo nesinoburhabaxa obuphezulu. Ezifana ne-polyvinyl alcohol, i-starch ether, i-vegetable gum, njl.njl.
(6) Ukunamathela kwe-hydroxypropyl methylcellulose kulwakhiwo lwe-mortar kuphezulu kunoko kwe-methylcellulose.
(7) I-hydroxypropyl methylcellulose inokumelana ngcono kwee-enzyme kune-methylcellulose, kwaye isisombululo sayo asinakwenzeka ukuba sonakaliswe zii-enzyme kune-methylcellulose.
20. Yintoni ekufuneka iqwalaselwe xa kusetyenziswa ulwalamano phakathi kwe-viscosity kunye nobushushu be-HPMC?
Ubunzima be-HPMC buhambelana ngokuphambeneyo nobushushu, oko kukuthi, ubunzima buyanda njengoko ubushushu buncipha. Ubunzima bemveliso esihlala sibhekisela kuyo bubhekisa kwisiphumo sovavanyo lwesisombululo sayo samanzi esiyi-2% kubushushu obuyi-20 degrees Celsius.
Kwimisebenzi ebonakalayo, kufuneka kuqatshelwe ukuba kwiindawo ezinomahluko omkhulu kubushushu phakathi kwehlobo nobusika, kucetyiswa ukusebenzisa i-viscosity ephantsi ebusika, nto leyo elungele ukwakhiwa. Ngaphandle koko, xa ubushushu buphantsi, i-viscosity ye-cellulose iya kwanda, kwaye imvakalelo yesandla iya kuba nzima xa ikrwelwa.
I-viscosity ephakathi: 75000-100000 isetyenziselwa ikakhulu i-putty
Isizathu: ukugcina amanzi kakuhle
Ubuninzi obuphezulu: 150000-200000 Isetyenziswa kakhulu kwi-polystyrene particle thermal insulation mortar rubber powder kunye ne-vitrified microbead thermal insulation mortar.
Isizathu: I-viscosity iphezulu, i-mortar ayilula ukuyiwa, idilike, kwaye ulwakhiwo luphuculwe.
Kodwa ngokubanzi, okukhona i-viscosity iphezulu, kokukhona ukugcinwa kwamanzi kuphucuka. Ke ngoko, xa kujongwa iindleko, iifektri ezininzi ze-dry powder mortar zithatha indawo ye-cellulose e-viscosity ephakathi nephantsi (20000-40000) nge-cellulose e-viscosity ephakathi (20000-40000) ukunciphisa ubungakanani bokongeza.
Ixesha lokuthumela: Novemba-18-2022