1. Iimpawu zemveliso
Isakhiwo sekhemikhali kunye nokuqulunqwaHydroxypropyl methylcelculose (hpmc)sisifo se-selsulose efunyenwe ngokutshintsha kwamachiza. Yenziwe kwi-sellupese yemvelo ngokubeka i-ithem, methyth kunye ne-hydropypropyproption. In its molecular structure, the cellulose skeleton is connected by β-D-glucose units through β-1,4 glycosidic bonds, and the side groups are composed of methyl (-OCH3) and hydroxypropyl (-C3H7OH).
Iipropathi zomzimba
U-Solidality: I-Kimbacell®HPMC i-insulble emanzini nasezinyibilikeni, kodwa inokwenza isisombululo esibonakalayo kumanzi abandayo. I-solity yayo ihambelana nomxholo we-hydroxypropyl kunye ne-methyl kwimolekyuli.
I-Viskosity: Isisombululo se-HPMC sinophawu oluthile, oluqhubeka lunyuka ngokunyuka kobunzima bemolekyuli. Uluhlu lwayo lokubonisa lubanzi kwaye lunokuhlengahlengiswa ngokwemfuno yokuhlangabezana neemfuno zosetyenziso lwamacandelo ahlukeneyo.
Uzinzo lwe-therm: I-HPMC inozinzo oluphakamileyo lwe-shirm, inokumelana neemeko zobushushu obuphezulu, kwaye akukho lula ukubola ngexesha lokufudumeza.
Umsebenzi osebenzayo
Ipropathi yokwenza ifilimu: i-HPMC inepropathi efanelekileyo yefilimu kwaye inokwenza ubume befilimu ebonakalayo kunye ne-iyunifomu kwisisombululo samanzi, ngoko ke ihlala isetyenziswa njengezixhobo zeMatrix kwiinkqubo zolawulo ezilawulwa ngamachiza.
Ukutsalwa kunye nokuzinza: Ngenxa yomsebenzi wayo womphezulu, i-HPMC ihlala isetyenziswa kwimithambo, ukunqunyanyiswa, iiglasi kunye nezinye iindlela zokuphucula uzinzo lokuqulunqwa.
Ukugcinwa kwamanzi kunye nokugcinwa kwamanzi: I-HPMC inepropathi ethandekayo kwaye inokunyusa i-viscosity yesisombululo kwindlela ephantsi. Ukongeza, inokugcina amanzi, ngaloo ndlela iphucule amandla okugcinwa kwamanzi kwemveliso, kwaye ifumaneka rhoqo kwi-cosmetics kunye neekhemikhali zemihla ngemihla.
I-Noidicity: Njengomntu ongenguye we-noinic surfadent, i-HPMC inokuhlala uzinzile kwi-AID, ialkali okanye izisombululo zetyuwa kwaye ineenguqulelo ezomeleleyo.
Iindawo zesicelo
Ishishini lamachiza: Njengomphathi wamachiza, isetyenziselwa ukulungiselela ukukhululwa okulawulwa, ukukhululwa kunye namalungiselelo okukhutshwa kwandiswa; Ikwasetyenziswa kulungiselelo lweetafile, iicapbules kunye neoyile yokufikelela kwiziyobisi.
Umzi-mveliso wokwakha: njengesongezo, iphucula ukusebenza kokwakha izinto ezifana nodaka kunye nekhredithi, kwaye iphucula ubumbisi, ubunzi kunye nokugcinwa kwamanzi.
Ishishini lokutya: Isetyenziswe njenge-thickener, i-eulsifier kunye nearhente yeGeling ngexesha lokugcina, ijeli, i-ice cream kunye nezinye iimveliso.
Ishishini le-cosmetics: elisetyenziswe kwi-lotions, iikhrim zekhuselo, i-shampoos kunye nezinye iimveliso ukubonelela ngozinzo kunye nozinzo.
2. Indlela yeSynthesis
Ukukhupha iselfowuni Inkqubo ye-HPMMC kufuneka ikhuphe i-selsulose evela kwiintsiba zezityalo zendalo (ezinjengeenkuni, ikotoni, njl. Njl.). Ngokubanzi, ukungcola kunye nezinto ezingafunekiyo kunye nezixhobo ezingezizo zeselles ezifana ne-legnin kwizinto eziluhlaza zisuswa ngeendlela zekhemikhali okanye zoomatshini. Inkqubo yokukhuphela iselselose ibandakanya ukuthoba, iAlkali iAlkali, i-Bleach kunye namanye amanyathelo.
I-Etherisation Reaction ye-Seleulose i-Seleped selsuloses isebenza kwakhona kwaye yongeza izinto ezizinto ezifana ne-methyl kunye ne-hydroxypropyl. Ukuphendula kwe-etherIdes kudla ngokuqhutywa kwesisombululo se-alkaline, kunye nokusetyenziswa kweearhente eziqhelekileyo ze-ethyl chloride (Ch3cl), i-proplene oxide (c3h6o), njl.
Impendulo ye-methyyreth: I-Seleyulose iphinda ihlawulwe iarhente ye-methylating (njenge-methyl chloride) ukuze amaqela e-hydroxyl (--) kwimolekyuli yeselselose etshintshwa ngamaqela e-methyl (-och3).
I-HYDROXYPROPROOPROOPROOPROORDE YOKUGQIBELA: Ukwazisa i-hydroxypropyl (-c3h7h7h7h7h7h7h7h7h7h7h7h7h7h7h7h7h7h7h7h7h7h7h7h7h7h7H. Kule mpendulo, amanye amaqela e-hydroxyl kwimolekyuli eselseyuli athatyathwa ngokutshintshwa ngamaqela e-hydroxypropy.
Ukulawulwa kwenqanaba lokuphendula
Ubushushu kunye nexesha: Indlela yokuphendula ye-Etheride idla ngokuqhutywa kwiqondo lobushushu engama-50-70 ° C, kwaye ixesha lokuphendula liphakathi kweeyure ezimbalwa nangaphezulu kweeyure ezilishumi. Iqondo lokushisa eliphezulu kakhulu linokubangela ukonakaliswa kweselfowuni, kwaye amaqondo obushushu aphantsi kakhulu kuya kubangela ukusebenza kakuhle.
Ulawulo lwexabiso le-PH: Indlela yokusabela idla ngokuqhutywa phantsi kweemeko ze-ALKALIIN, enceda ekuphuculeni ukusebenza ngempumelelo kwe-Etherides.
I-Arhente yeAgeli yoSetyenziso: Ukuxinana kwe-Arhente ye-Etherise inefuthe elibalulekileyo kwipropathi yemveliso yokuphendula. I-Arhente yoxinzelelo oluphezulu lophuhliso lonyuse inqanaba le-hydroxypropy okanye i-methyling yemveliso, ngaloo ndlela ihlengahlengise ukusebenza kwe-kimbacell®hpmc.
Ukucocwa kunye nokomisa emva kokuba impendulo igqityiwe, imveliso ihlala ifunyazwa ngamanzi okanye ikhutshwe ngesinyibilikisi ukususa ii-regegents kunye neemveliso. I-HPMC ehlanjululwe iyomisiwe ukufumana ipoder okanye imveliso yokugqibela ye-Granular.
Ukulawulwa kwesisindo kwi-molekshini ngexesha lenkqubo ye-synthesi, ubunzima bemolekyuli ye-HPMC bunokulawulwa ngokuhlengahlengiswa kweemeko zokuphendula (njengamaqondo obushushu, ixesha, kunye nokuhlaziywa kwerejista). I-HPMC enemilinganiselo eyahlukileyo ye-molecular yahlukile kusomeleza, i-viscosity, isiphumo se-isicelo, njl., Njl njl.
Njengezinto ezininzi ze-polymer,I-HPMCisetyenziswa ngokubanzi kumayeza, ukwakhiwa, ukutya kunye ne-cosmetics. Ukuqaqanjelwa kwayo ngokusemagqabini, ukuqinisekiswa, ukugcinwa kwamanzi kunye neepropathi zokwenza ifilimu kwenza ukuba zibe yinto ebalulekileyo yezorhwebo. Indlela ye-Synthesis ye-HPMC ikakhulu isebenzisa indlela yokuphendula ye-elselose. Iimeko ezikhethekileyo zokuphendula (ezinjengeqondo lobushushu, ixabiso le-PH, ugxininiso lokusebenzela, njl.njl.) Kufuneka ulawulwe ngokufanelekileyo ukufumana iimveliso ezihlangabezana neemfuno. Kwixa elizayo, imisebenzi ye-HPMC ingakhuswa ngakumbi kumasimi amaninzi.
IXESHA LOKUQALA: UJAN-27-2025