Sechinhu chinowanzoshandiswa mumaindasitiri akasiyana-siyana, upfu hwe cellulose ether hune kunamira kwakanaka, kukora uye kuchengetedza mvura. Hunoshandiswa zvakanyanya mukuvaka, mishonga, zvizoro, chikafu nedzimwe nzvimbo dzakawanda. Zvisinei, kuti uwane mashandiro akanaka kubva kuhupfu hwe cellulose ether, kutarisisa kunofanirwa kupihwa kune maitiro ekunyungudika kwayo. Heano mamwe matipi akakosha ekufunga nezvawo pakunyungudutsa upfu hwe cellulose ether:
1. Sarudza mushonga wakakodzera
Upfu hweCellulose ether hunonyungudika zvikuru mumvura, zvichiita mhinduro yakajeka uye yakakora. Zvisinei, mhando dzakasiyana dze cellulose ethers dzine kunyungudika kwakasiyana mumvura, uye kunyungudika kwadzo kunokanganiswa nezvinhu zvakaita sekupisa uye pH. Saka, kusarudza solvent yakakodzera kuti uwane mhedzisiro yakanaka kwakakosha.
Semuenzaniso, kana upfu hwe cellulose ether huchida kunyungudutswa munzvimbo ine tembiricha yakaderera kana mu pH yakaderera, hydroxypropylmethylcellulose (HPMC) kana methylcellulose (MC) zvingave zviri nani pane ethylcellulose (EC) kana carboxylate Better Choice Methylcellulose (CMC). Zvakakosha kusarudza solvent yakakodzera uchifunga nezvezvinodiwa zvekushandisa uye hunhu hwe solvent.
2. Kudzora tembiricha
Kupisa ndicho chimwe chinhu chikuru chinokanganisa kunyungudika kweupfu hwe cellulose ether. Kunyungudika kwe cellulose ethers kunowedzera nekupisa, asi mwero wekunyungudika unowedzerawo, izvo zvinogona kutungamira kuhupfu hwakasanganiswa kana hwakasanganiswa. Saka, tembiricha inofanira kudzorwa nokungwarira panguva yekunyungudika.
Kazhinji, tembiricha yakanakisisa yekunyungudutsa cellulose ether ndeye 20-40°C. Kana tembiricha yakaderera, zvingangodiwa kuti nguva yekunyunguduka iwedzere kana kushandisa solvent yakakodzera. Kana tembiricha yakanyanya, inogona kukonzera kuparara kwe cellulose ether uye kukanganisa mashandiro ayo.
3. Kurunga nekukurunga
Kukurunga nekukurunga zvakakoshawo pakunyungudutsa upfu hwe cellulose ether. Kukurunga kwakakodzera kunobatsira kuti upfu hupararire zvakaenzana mumusanganiswa uye kudzivirira kuungana. Kukurunga kunobatsirawo kuwedzera mwero wekunyunguduka, kunyanya kune mhinduro dzakanyanya kusimba.
Zvisinei, kukwiza kwakanyanya kunogona kugadzira mabubble emhepo kana furo, izvo zvinogona kukanganisa kujeka uye kugadzikana kwemushonga. Saka, zvakakosha kugadzirisa kumhanya kwekukurunga uye simba zvichienderana nezvinodiwa chaizvo uye nzvimbo yekushandiswa kwepoda ye cellulose ether.
4. Zvinowedzerwa
Zvinowedzerwa zvinogona kuwedzerwa panguva yekunyungudutswa kweupfu hwe cellulose ether kuti ivandudze mashandiro ayo kana kugadzikana kwayo. Semuenzaniso, borax kana zvimwe zvinhu zvine alkaline zvinogona kuwedzerwa kugadzirisa pH yemushonga uye kuwedzera viscosity. Sodium bicarbonate inowedzerawo viscosity yemushonga, zvichideredza mwero wekunyungudutswa.
Zvimwe zvinowedzerwa zvakaita sema surfactants, munyu kana ma polymer zvinogona kushandiswa kuwedzera kunyungudika, kugadzikana kana zvimwe zvinhu zve cellulose ether solution. Zvisinei, zvakakosha kushandisa zvinowedzerwa zvine mwero uye kusarudza nokungwarira, sezvo zvakawandisa kana zvisina kukodzera zvinogona kukonzera migumisiro isingadiwe.
5. Nguva yekunyungudutsa
Nguva yekunyungudika chinhu chakakosha pakugadzirwa nekushandiswa kweupfu hwe cellulose ether. Nguva yekunyungudika inoenderana nezvinhu zvakawanda zvakaita serudzi rwe cellulose ether, solvent, tembiricha, kumhanya kwekukurunga uye kutarisisa.
Kazhinji, upfu hwe ether hwe cellulose hunofanira kuwedzerwa mu solvent zvishoma nezvishoma nekusanganiswa nguva dzose kusvika mhinduro yafanana yawanikwa. Nguva yekunyungudika inogona kusiyana kubva pamaminitsi mashoma kusvika maawa akati wandei, zvichienderana nezvinhu zvataurwa pamusoro apa.
Zvakakosha kunyatsoongorora maitiro ekunyungudika uye kugadzirisa ma parameter sezvinodiwa kuti uve nechokwadi chekuti mhinduro ye cellulose ether iri kushanda zvakanaka uye yakabatana.
Mukupedzisa, upfu hwe cellulose ether chinhu chinoshandiswa zvakasiyana-siyana uye chinokosha mumabasa akasiyana-siyana emaindasitiri. Zvisinei, maitiro ekunyunguduka kwakakosha kuti ibudirire zvakanaka. Nekuteerera zvinhu zvakaita sekusarudza zvinonyungudutsa, kudzora tembiricha, kusanganisa, zvinowedzera, uye nguva yekunyunguduka, zvinokwanisika kuwana mhinduro ye cellulose ether yemhando yepamusoro inosangana nezvinodiwa zvekushandisa.
Nguva yekutumira: Nyamavhuvhu-18-2023