Hydroxypropyl methylcelceluploseyindawo eyenzeka ngokwemvelo i-ether ye-ether, engenabungozi emzimbeni womntu. Nangona kunjalo, izixhobo ezingafunekiyo ze-cotton ezinemigca kunye ne-HPMC esetyenzisiweyo kumzi-mveliso zibubuso bonke, kuba oku kuya kuba nefuthe lothuli, kwaye abanye abanobungozi.
I-HydroxyPOpyl Methylcelcelose ayinatyhefu. I-seluplose ithathwa njengefanelekileyo kwaye iqhubekeka usebenzisa i-fibers yendalo nge-alkali fusion, impendulo yokuGqibela, ukuhlamba, ukugaya kunye nezinye iinkqubo. Ayizukubeka impilo yabantu.
I-HydroxyPOpyl Methyl Selelose, ekwabizwa ngokuba yi-Hypromellose kunye ne-Sleulose Hydroxly Goutlpyl Methyl Touses, yenziwa ngokusebenzisa i-collose emsulwa kwaye iphantsi kwe-alkali enemeko ekhethekileyo.
I-synthesis ye-hydroxypropyl methylceltulose: I-cotton ye-cottose inyangwa nge-LYE nge-35-40 ℃ kangangesiqingatha seyure, inyibilikisiwe kwi-35 ℃ Ukwenza i-Alkali Fiber. Ngaphakathi koluhlu olufunekayo. Beka i-alkali fiber kwi-ethetle ye-etherlesition, yongeza i-propylene oxide kunye ne-methyl chloride ngokulandelelana, kwaye uqinisekisile kwi-50-80 ℃ ye-5h, kwaye uxinzelelo oluphezulu lumalunga ne-1.8MPA. Emva koko ngeza isixa esifanelekileyo se-hydrochloric acid kunye ne-oxcalic acid ukuhlamba izixhobo kumanzi ashushu kwi-90 ° C ukubandezela ubungakanani kunye nevolumu. Ukupheliswa ngumzimba ngesentimitha. Tyibilika ekungathathi cala. Xa umxholo wamanzi kwi-60%, womisa ngomjelo womoya oshushu nge-130 ° C ukuya kumxholo ongaphantsi kwe-5%.
I-HPMC eveliswa yindlela ye-Solvent isebenzisa i-Conluene kunye ne-Iyopropanol njengeSolvent. Ukuba uhlanjwe kakubi, iya kuba nephunga elincinci. Le yingxaki yenkqubo yokuhlamba, engachaphazeli ukusetyenziswa okanye nayiphi na ingxaki.
Hypromellose is a refined cotton that is rarely impregnated with liquid to obtain alkaline cellulose, and then participates in solvents, etherification agents, toluene and isopropanol for etherification reactions, and is neutralized, washed, dried, and crushed to obtain finished products. Ibi kakhulu kwaye inuka kamnandi, abasebenzisi banokuyisebenzisa ngendlela enesitali.
I-Hydroxypropyl Methylcelceluplose kufuneka inikele ingqalelo kwezi zinto zilandelayo kwisicelo:
Kwisiphumo soMgubo wodaka, i-hydroxypropyl methylcelcelcelose kuphela idlala isiphumo esixhasayo, kwaye ayithathi nxaxheba kuyo nayiphi na impendulo yemichiza. Umgubo odaka wongezwa ngamanzi kwaye ubeke eludongeni, osabela kwikhemikhali. Ngenxa yokusekwa kwezinto ezintsha, umgubo odaka eludongeni ususwe eludongeni nasemhlabeni ube ngumgubo ukwenza izinto ezintsha. I-HydroxyPOpyl Methylcelcelcelose igcina amanzi kuphela kwaye inceda i-calcium egrey ukuba iphendule ngakumbi, kodwa ayithathi mpendulo.
I-Hydroxypropyl Methyl Selelose HPMC ayithathi nxaxheba kuyo nayiphi na indlela yokuphendula yemichiza, kodwa iyanceda kuphela. Yongeza amanzi kumgubo odaka kwaye ubeke eludongeni, yindlela yokuphendula yemichiza. Ngenxa yokusekwa kwezinto ezintsha, umgubo odaka eludongeni ususwe eludongeni kwaye umhlaba ube ngumgubo, kwaye ke akunakwenziwa, ngenxa yokuba izinto ezintsha zenziwe ns. Izinto eziphambili ze-calcium ye-calcium ye-calcium zezi: I-CA (O) 2, umxube we-Cao kunye ne-CAO encinci ye-CAO3, CaO
H2o = ca (oh) 2-CA) 2 CO2 = Caco3 ↓ h2o
I-Calcium engwevu ivelisa ezinye izinto phantsi kwesiphumo samanzi kunye ne-CO2 emoyeni, ngelixa i-HPMC igcina amanzi kwaye inceda i-calcium ye-calcium ukuba iphendule. Ayithathi nxaxheba kuyo nayiphi na impendulo.
I-Hydroxypropyl Methyl Selelose inoluhlu olubanzi lokusebenzisa. Kubomi bemihla ngemihla, iimveliso ezininzi azinakuhlukanisa inkqubo yokuphucula. Emva koko, kumashishini ahlukeneyo, ithini impembelelo ye-Hydroxypropyl Methylcelgalose, ndiza kukucacisa kuwe, ukuze uthintele ukusetyenziswa gwenxa xa ufumana ulwazi.
Okokuqala, kwishishini lokwakha, inokuthathwa njengearhente yokubuyela umva kunye nokugcina amanzi. Isifo sokulala siyampompoza, ngoko ke yonke into esiyisebenzisayo ithatha inxaxheba. Ukongeza, kwizixhobo zokwakha ezifana ne-gypsum ye-gypsum, udaka, kunye nomgubo wodaka, unokusetyenziswa njengendawo yokusebenza, kodwa ingenza kuphela ukuba ipeyinti igqitywe kakhulu. Kwi-marble, iithayile ze-cemarating ye-ceramic, imihombiso ye-moleculaund coccoons, inokusetyenziswa njenge-onchion yokuphucula i-hydroxypropyl methyl sellien yesenzo sayo kwizinto zokwakha.
Kweminye amashishini, njengemveliso ye-porcelain kunye nemveliso ye-pocettery, inokusetyenziswa njengokuthengiswa kweemveliso ze-porcelain kunye nembiza; Kwishishini le-lacquer kunye ne-IK Printa, inokusetyenziswa njengomgubo ogudileyo, i-thickener, i-staiblisetizer, kwaye idityaniswa kakuhle, kwaye inokusetyenziswa ngokufuthi kwiPlastiki yePlastiki ye-Molecular . Kwimveliso ye-polyvinyl chloride, ithathwa njengomgubo ovulekileyo.
Iimveliso ezenziwe nge-hydropylpropyl methylcelfulose zisetyenziswa ngokubanzi kwi-funseys entsha kunye nemifuno, amayeza, izikhumba zezilwanyana kunye namashishini ezitayile kunye namashishini ezitayile kunye namashishini ezitayile kunye namashishini ezitayile kunye namashishini ezitayile kunye namashishini ezitayile kunye namashishini ezitayile kunye namashishini ezitayile kunye namashishini ezitayile kunye namashishini ezitayile kunye namashishini ezitayile kunye namashishini ezitayile. Kukhuselekile kwaye kungenetyhefu, ayicaphukisi kakhulu kwimizimba ye-mucous yabantu kunye nezikhumba, kwaye zinokusetyenziswa njengokutya. Nangona kunjalo, kwimeko yokwenyani le nto, uthuli lwayo lunokubangela ukungcoliseka komoya, kwaye akunakuluncedo kulondolozo lolusu ukuba luhlukanise nomlilo.
Ukugcinwa kwamanzi
I-Hydroxypropyl ekhethekileyo ye-hydropylcelcelcelsulose ivumela ukusetyenziswa kakhulu kwamanzi kweyona ndawo iphambili, kwaye amanzi kufuneka agcinwe kwithuba elininzi le-gypsam isetiwe ngokupheleleyo. Le ndawo ikhethekileyo ibizwa ngokuba yigcino lamanzi kwaye ihambelana ngokuthe ngqo kwi-viscosity ye-hydroxlypropyl methylcelcelose isisombululo esisetyenziselwa ukwakhiwa kwesakhiwo. Ukuphakama kwesisombululo, ukuphakama kwamava omsebenzi.
I-anti-sagging
Udaka lwepropathi ekhethekileyo lokulwa i-anting lunokusetyenziswa kunye nokudityaniswa komzimba ngaphandle kokutsiba, oko kuthetha ukuba isikhumba ngokwawo asisitshintshi isini saso, kungenjalo siyakuqala xa kuqala ulwakhiwo luqala.
Ukunciphisa i-viscofity kunye nokwenza lula ulwakhiwo
Emva kongeza iimveliso ezahlukeneyo zokwakha i-Methylcelcelgalose iimveliso, i-Gypsum Gypsum Plasters Isimo sengqondo sokuveliswa ngokulinganayo sinokuveliswa. Xa kuthathwa njengenqanaba elifanelekileyo kwaye i-vis-viscofity yenqanaba le-HydropylCopyl Methylcelgalose isetyenzisiwe, inqanaba lokujonga i-viscofity lincitshiswa kwaye ukwakhiwa kuya kuba lula. Nangona kunjalo, ukugcinwa kwamanzi kwe-hydroxypropyl methylcelcelsulose yokwakha i-viscofity ebuthathaka, kwaye kuyimfuneko ukwandisa isixa-mali.
Ixabiso lokulinganisa iplastiki
Kwisixa esimiselweyo sodaka olosiweyo, kuqoqosho ngakumbi ukuvelisa ubungakanani obuthile obuthile, obunokufezekiswa ngokwamanzi amancinci kunye namaqabu. Nangona kunjalo, ukuba inani lamanzi kunye neebbhus lide kakhulu, amandla ayonakalisi.
IXESHA LOKUQALA: APR-26-2024