Cellulose ether, makamaka hydroxypropyl methylcellulose (HPMC), ndi chowonjezera chofunikira chomwe chimagwiritsidwa ntchito m'mafakitale osiyanasiyana chifukwa cha kukhuthala kwake, kusunga madzi ambiri, komanso kuthekera kokulitsa kukhuthala. M'nkhaniyi, tiona kusanthula mwatsatanetsatane za thickening ndi thixotropy katundu wa mapadi efa, makamaka moganizira HPMC.
Makulidwe ndi chinthu chofunikira kwambiri cha cellulose ether, chomwe chimatanthawuza kuthekera kwa chinthu kukulitsa kukhuthala kwa yankho kapena kubalalitsidwa. HPMC imawonetsa kukhuthala kwakukulu, kutanthauza kuti imatha kukulitsa kukhuthala ngakhale pamlingo wocheperako. Katunduyu ndi wofunika kwambiri pazogwiritsa ntchito zambiri, monga zomatira, zokutira, ndi zinthu zosamalira anthu, pomwe kukhuthala kwapamwamba kumafunikira kuti zigwire bwino ntchito.
Ubwino wina waukulu wa HPMC ndi kuchuluka kwake kosungira madzi. Kusungidwa kwa madzi kumatanthauza kuthekera kwa chinthu kusunga madzi mkati mwa dongosolo, ngakhale pansi pa kutentha kapena pamaso pa zosungunulira zina. HPMC imapanga mawonekedwe ngati gel opangidwa ndi hydrated, omwe amathandiza kusunga mamolekyu amadzi ndikuletsa kutuluka kwamadzi. Katunduyu ndi wofunikira makamaka m'mafakitale monga zomangamanga ndi matope osakaniza owuma, komwe kusunga chinyezi ndikofunikira kuti zinthu ziziyenda bwino komanso kuchiritsa.
Kuchuluka kwa mamasukidwe akayendedwe operekedwa ndi cellulose ether, monga HPMC, kumapereka maubwino angapo pamagwiritsidwe osiyanasiyana. M'makampani omanga, HPMC imagwiritsidwa ntchito popanga simenti kuti ikhale yogwira ntchito komanso kupewa tsankho. Kukhuthala kwakukulu kwa yankho la HPMC kumathandizira kuwongolera bwino pakugwiritsa ntchito, kuonetsetsa kufalikira kwa yunifolomu ndikupewa kukhazikika kwa tinthu tating'ono. Momwemonso, mumakampani opanga utoto, HPMC imawonjezedwa ku zokutira kuti ziwonjezere kukhuthala kwawo, zomwe zimapangitsa kuti pakhale kuphimba bwino komanso kutsika kutsika.
Komanso, chikhalidwe cha thixotropic cha cellulose ether ndi mbali yofunika kuiganizira. Thixotropy amatanthauza katundu wa zinthu kuti awonetse kusintha kosinthika mu viscosity pakugwiritsa ntchito kumeta ubweya wa ubweya. M'mawu osavuta, pamene mphamvu yometa ubweya ikugwiritsidwa ntchito, zinthuzo zimakhala zochepa kwambiri, zomwe zimapangitsa kuti zikhale zosavuta, ndipo zikayima, zimabwereranso ku chikhalidwe chake choyambirira cha viscosity. Katunduyu ndiwopindulitsa kwambiri pamagwiritsidwe ntchito ngati ma caulks, ma sealants, ndi mafuta opaka mankhwala, komwe kumafunikira kufalitsa ndikufalitsa mosavuta. HPMC a thixotropic khalidwe amaonetsetsa yosavuta ntchito ndi wabwino wetting padziko, pokhalabe zofunika mamasukidwe akayendedwe kwa adhesion ndi kusindikiza katundu.
Kuti afufuze mozama mu thickening ndi thixotropy katundu wa mapadi ether, kafukufuku kwambiri ndi kusanthula ikuchitika. Njira zosiyanasiyana, kuphatikizapo kuyeza kwa rheological, zimagwiritsidwa ntchito poyesa kukhuthala, kumeta ubweya wa ubweya, ndi khalidwe la thixotropic la mayankho a cellulose ether. Maphunzirowa amathandiza kumvetsetsa mgwirizano pakati pa ndende, kutentha, ndi kumeta ubweya wa ubweya pa thickening ndi thixotropy katundu wa cellulose ether.
Pomaliza, ether ya cellulose, makamaka HPMC, imawonetsa kukhuthala kwakukulu, kusungika kwamadzi kwambiri, komanso kukhuthala kochulukira pamagwiritsidwe osiyanasiyana. Kuthekera kwake kupereka khalidwe la thixotropic kumapangitsa kukhala chowonjezera chamtengo wapatali kwa zinthu zomwe zosavuta kugwiritsa ntchito komanso kukhuthala kwapamwamba zimafunika nthawi imodzi. Kuti timvetse bwino za thickening ndi thixotropy zimatha mapadi efa, kusanthula kwambiri ndi kafukufuku ikuchitika, amene patsogolo kumapangitsanso mafakitale ntchito.
Nthawi yotumiza: Nov-24-2023