1 Ndedzipi nzira huru dzekushandisa cellulose ether HPMC?
HPMC inoshandiswa zvakanyanya mukuvaka, pendi inobva mumvura, resin yekugadzira, zviumbwa zvedongo, mishonga, chikafu, machira, zvizoro, fodya, nedzimwe nzvimbo. Yakakamurwa kuva giredhi rekuvaka, giredhi rechikafu, giredhi remishonga, giredhi remaindasitiri rePVC uye giredhi remakemikari rezuva nezuva.
2 Ndezvipi zvikamu zve cellulose?
Maserulose akajairika ndeaya: MC, HPMC, MHEC, CMC, HEC, EC
Pakati pazvo, HEC neCMC zvinonyanya kushandiswa mukugadzira machira akavakirwa mumvura;
CMC inogona kushandiswawo muzviumbwa zvedongo, minda yemafuta, chikafu nedzimwe nzvimbo;
EC inonyanya kushandiswa mukurapa, electronic silver paste nedzimwe nzvimbo;
HPMC yakakamurwa kuita zvinhu zvakasiyana-siyana uye inoshandiswa mudhaka, mishonga, chikafu, indasitiri yePVC, zvigadzirwa zvemakemikari zvezuva nezuva uye mamwe maindasitiri.
3 Musiyano uripo pakati peHPMC neMHEC pakushandiswa?
Hunhu hwemhando mbiri dze cellulose hwakafanana, asi kugadzikana kweMHEC tembiricha yakakwira kuri nani, kunyanya muzhizha apo tembiricha yemadziro iri yakakwira, uye mashandiro eMHEC ekuchengetedza mvura ari nani pane eHPMC mumamiriro ekupisa akakwira.
4 Ungangotonga sei mhando yeHPMC?
1) Kunyange zvazvo kuchena kwechinhu hakugone kutsanangura kana HPMC iri nyore kushandisa, uye kana zvinhu zvinochenesa zvinhu zvikawedzerwa mukugadzirwa kwacho, mhando yacho ichakanganiswa, asi zvigadzirwa zvakawanda zvakanaka zvine kuchena kwakanaka, izvo zvinogona kutariswa kubva pachitarisiko.
2) Kutumira chiedza: Mushure mekunyungudutsa HPMC mumvura kuti igadzire colloid inoonekera, tarisai kutumirwa kwayo kwechiedza. Kana kutumirwa kwechiedza kuri nani, zvinhu zvisinganyunguduke zvakanyanya, uye mhando yacho yakanaka.
Kana uchida kuona mhando ye cellulose nemazvo, nzira yakavimbika ndeyekushandisa michina yehunyanzvi murabhoritari yehunyanzvi kuti uiongorore. Zviratidzo zvikuru zvekuedza zvinosanganisira viscosity, mwero wekuchengetedza mvura, uye huwandu hwedota.
5 Nzira yekuona viscosity ye cellulose?
Viscometer yakajairika mumusika we cellulose wemuno iNDJ, asi mumusika wepasi rose, vagadziri vakasiyana vanowanzo shandisa nzira dzakasiyana dzekuongorora viscosity. Dzakajairika iBrookfeild RV, Hoppler, uye kunewo mhinduro dzakasiyana dzekuongorora, dzakakamurwa kuita 1% solution uye 2% solution. Viscometer dzakasiyana uye nzira dzakasiyana dzekuongorora dzinowanzo konzera musiyano wekakawanda kana kuti kane makumi ezviitiko zve viscosity.
6Ndeupi musiyano uripo pakati peHPMC instant type nehot melt type?
Zvigadzirwa zveHPMC zvinokurumidza kupararira zvinoreva zvigadzirwa zvinokurumidza kupararira mumvura inotonhora, asi zvinofanira kucherechedzwa kuti kupararira hazvirevi kunyungudika. Zvigadzirwa zvinokurumidza kupiswa ne glyoxal pamusoro uye zvinoparadzirwa mumvura inotonhora, asi hazvitangi kunyungudika pakarepo. , saka kunyungudika hakugadzike pakarepo mushure mekupararira. Kuwanda kwekugadzirwa kwe glyoxal pamusoro, kupararira kunokurumidza, asi kunyungudika kunonoka, huwandu hwe glyoxal hushoma, uye zvinopesana.
7 cellulose yakagadzirwa pamwe chete ne cellulose yakagadziriswa
Iye zvino kune akawanda ma cellulose akagadziriswa uye compound cellulose ari pamusika, saka chii chinonzi modification uye compound?
Rudzi urwu rwe cellulose runowanzova nezviratidzo zvisina cellulose yekutanga kana kuti runowedzera zvimwe zvezviratidzo zvayo, zvakaita se: kudzivirira kutsvedza, nguva yakavhurika yakawedzerwa, nzvimbo yakawedzerwa yekukwesha kuti ivandudze kuvaka, nezvimwewo. Zvisinei, zvinofanira kucherechedzwa kuti makambani mazhinji anoshandisawo cellulose yakachipa yaanosanganisa kuti aderedze mitengo inonzi compound cellulose kana modified cellulose. Semutengi, edza kusiyanisa uye usanyengerwa. Zvakanakisa kusarudza zvigadzirwa zvakavimbika kubva kumabhurandi makuru nemafekitori makuru.
Nguva yekutumira: Zvita-23-2022