1. Mtundu wa mankhwala ndi ndondomeko
Pali mitundu yambiri ya mankhwala a cellulose ether, ndipo mitundu yosiyanasiyana imakhala ndi kusiyana koonekeratu pakuchita. Ma cellulose ethers ambiri amaphatikizapo hydroxypropyl methylcellulose (HPMC), hydroxyethyl cellulose (HEC), carboxymethyl cellulose (CMC), ndi zina zotero.
HPMC: Amagwiritsidwa ntchito pomanga, mankhwala, chakudya ndi minda ina, ndi thickening wabwino, filimu kupanga, kusunga madzi ndi adhesion.
HEC: Amagwiritsidwa ntchito kwambiri mu zokutira, zomatira, zotsukira, zokhala ndi makulidwe abwino kwambiri, okhazikika komanso kusungunuka kwamadzi.
CMC: Imagwiritsidwa ntchito kwambiri m'mafakitale azakudya, mankhwala atsiku ndi tsiku komanso mafakitale opanga mapepala, ndipo imakhala ndi zotsatira zabwino zokulitsa komanso kukhazikika.
Posankha mtundu woyenera wa cellulose ether, m'pofunika kumveketsa bwino ntchito yake, zofunika ntchito ndi specifications, monga mamasukidwe akayendedwe, mlingo wa m'malo, etc.
2. Viscosity
Kukhuthala kwa zinthu za cellulose ether ndi chizindikiro chachikulu cha magwiridwe antchito, chomwe chidzakhudza mwachindunji mawonekedwe a rheological, kusungunuka ndi kugwiritsa ntchito kwa mankhwalawa. The mamasukidwe akayendedwe a cellulose ether akhoza kusinthidwa malinga ndi zofunikira ntchito:
Mkulu mamasukidwe akayendedwe mapadi efa: makamaka ntchito zimene amafuna amphamvu thickening tingati ndi mkulu posungira madzi, monga kumanga matope ndi zomatira. Mtundu uwu wa ether wa cellulose ukhoza kupititsa patsogolo kusungidwa kwa madzi ndi kugwirira ntchito kwa zinthuzo.
Low mamasukidwe akayendedwe mapadi efa: makamaka ntchito ndi mkulu solubility ndi zofunika fluidity, monga zokutira, zotsukira ndi minda ina, amene amathandiza kusintha fluidity ndi pamwamba kusalala.
Kuchuluka kwa mamasukidwe akayendedwe, kumakhala kovuta kwambiri kusungunuka. Chifukwa chake, kusankha zinthu zokhala ndi viscosity yoyenera kumafuna kulingalira mozama za zomangamanga kapena kukonza magwiridwe antchito ndi zosowa za zinthu zomaliza.
3. Digiri ya m'malo ndi m'malo mtundu
The mankhwala katundu ndi ntchito makhalidwe a mapadi etero zimadalira mtundu ndi chiwerengero cha m`malo magulu ake. Mlingo wolowa m'malo umatanthawuza kuchuluka komwe magulu a hydroxyl mu molekyulu ya cellulose amalowetsedwa m'malo, nthawi zambiri amawonetsedwa ngati kuchuluka kwa zolowa m'malo pamtundu uliwonse wa shuga (mwachitsanzo, hydroxypropyl, methyl, carboxymethyl, ndi zina). Mtundu ndi digiri ya m'malo wa m'malo mwachindunji zimakhudza solubility, thickening luso ndi kukana mchere wa mapadi efa.
Mkulu digiri ya m'malo mapadi ether: ali ndi madzi kusungunuka bwino ndi kutentha otsika gelation, oyenera ntchito amafuna mkulu solubility madzi kapena otsika kutentha ntchito.
Madigiri otsika olowa m'malo mwa cellulose ether: amatha kukhala ndi kutentha kwa gel osakaniza komanso kusungunuka kwamadzi kosakwanira, koyenera madera ena apadera monga kufufuza malo amafuta kapena malo otentha kwambiri.
Komanso, m'malo osiyanasiyana adzapatsa cellulose ether zosiyanasiyana mankhwala katundu, monga carboxymethyl mapadi ali bwino kukana mchere ndi kukhazikika njira.
4. Kusungunuka
Zogulitsa zapamwamba za cellulose ether ziyenera kukhala zosungunuka bwino kuti zitha kumwazikana mwachangu ndikupanga njira yokhazikika pakagwiritsidwe ntchito. Kusungunuka kumakhudzidwa ndi zinthu monga kulowetsedwa, kukhuthala, ndi kukula kwa tinthu. Ma cellulose ethers abwino amatha kusungunuka mwachangu m'madzi ozizira kuti apange njira yofananira ya colloidal, ndipo samakonda kuphatikizika kapena kubalalitsidwa kosiyana.
Zizindikiro monga kuchuluka kwa kusungunuka ndi kuwonekera kwa yankho ndi kukhazikika kwa viscosity kumakhudza mwachindunji magwiridwe antchito a chinthucho pamapulogalamu enieni. Choncho, posankha cellulose ether, m'pofunika kutsimikizira ngati ili ndi kusungunuka kwakukulu ndi kukhazikika kwapakati pa ntchito.
5. Kukula kwa tinthu ting'onoting'ono
Kukula kwa tinthu ting'onoting'ono kwa zinthu za cellulose ether kudzakhudzanso kusungunuka kwake ndikugwiritsa ntchito. Fine-particle cellulose ethers nthawi zambiri amasungunuka mofulumira ndipo amamwazikana mofanana, oyenera kuti aziwoneka mofulumira kapena kukonzedwa, pamene ma ethers a cellulose amatha kupasuka pang'onopang'ono, koma akhoza kukhala olimba kwambiri pa ntchito zina.
Nthawi zambiri, kukula kwa tinthu ta cellulose ether kumasonyezedwa pa chizindikiro cha mankhwala, ndipo opanga amatha kusinthanso zinthu zamitundu yosiyanasiyana ya tinthu ting'onoting'ono malinga ndi zosowa za wosuta kuti agwirizane ndi njira zosiyanasiyana zogwirira ntchito.
6. Kuyera ndi kukhazikika kwazinthu
Ubwino wa cellulose ether umakhudza mwachindunji ntchito yake, makamaka m'minda yomwe ili ndi zofunikira zapamwamba monga chakudya ndi mankhwala, chiyero cha mankhwala ndichofunikira kwambiri. High-purity cellulose ether iyenera kukhala ndi zonyansa zochepa ndipo sizidzakhala ndi zotsatira zoipa pa mtundu, fungo, kukoma ndi ntchito ya mapeto.
Kuphatikiza apo, kukhazikika kwabwino kwa mankhwalawa ndikofunikanso. Pofuna kuonetsetsa kugwirizana kwa mankhwala m'magulu osiyanasiyana, m'pofunika kusankha wopanga ndi okhwima khalidwe dongosolo kulamulira. Kukhazikika kwaubwino kwa nthawi yayitali kumatha kuchepetsa kusiyana komwe kungachitike pakagwiritsidwe ntchito, potero kuwonetsetsa kuti zotsatira zake zizikhala zofananira nthawi iliyonse.
7. Ziyeneretso ndi mautumiki
Kusankha wothandizira wodalirika wa cellulose ether ndikofunikiranso. Wopereka chithandizo chapamwamba sayenera kungokhala ndi luso lopanga komanso kuwongolera bwino, komanso athe kupereka chithandizo chaukadaulo chaukadaulo komanso ntchito yogulitsa pambuyo pake.
Ziyeneretso za ogulitsa: Mvetsetsani ziyeneretso za wopanga, luso lamakampani, mawonekedwe a satifiketi (monga chiphaso cha ISO, ndi zina zotero) komanso ngati ali ndi zoyenereza m'magawo ogwirizana nawo.
Thandizo laukadaulo: Otsatsa abwino kwambiri akuyenera kupereka malangizo ogwiritsira ntchito malonda malinga ndi zosowa zamakasitomala kuti awonetsetse kuti makasitomala atha kugwiritsa ntchito zinthuzo moyenera ndikupeza zotsatira zabwino.
Ntchito yogulitsa pambuyo pogulitsa: M'pofunikanso kusankha ogulitsa omwe angapereke chithandizo chamakono panthawi yake ndi kuthetsa mavuto.
8. Mtengo ndi kudalirika
Mtengo wa zinthu za cellulose ether umasiyanasiyana kutengera mtundu, mtundu, ndi mawonekedwe. Posankha chinthu, musamangotsatira mtengo wotsika, koma muyenera kuganizira mozama momwe chimagwirira ntchito, momwe chimagwirira ntchito, komanso mtengo wake. Nthawi zina, ngakhale kuti ma ether apamwamba kwambiri a cellulose ndi okwera mtengo, amawonetsa magwiridwe antchito abwino, amatha kupititsa patsogolo ntchito zopanga kapena kuwongolera zinthu, komanso kukhala okwera mtengo kwambiri.
Mukafuna mankhwala apamwamba a cellulose ether, muyenera kuganizira mozama za mtundu wa mankhwala, kukhuthala, kuchuluka kwa m'malo, kusungunuka, kukula kwa tinthu, chiyero, ndi kukhazikika kwabwino malinga ndi zofunikira zenizeni, ndikuwunikanso ziyeneretso ndi ntchito za wogulitsa. Pokhapokha poyerekezera mwatsatanetsatane momwe zimagwirira ntchito komanso kukwera mtengo kwazinthu zosiyanasiyana zomwe titha kupeza ma ether a cellulose oyenera kukwaniritsa zosowa zamafakitale enaake ndi momwe amagwiritsidwira ntchito.
Nthawi yotumiza: Sep-13-2024