Ma cellulose ether ndi gulu la ma polima osungunuka m'madzi opangidwa kuchokera ku cellulose, yomwe ndi gawo lalikulu la makoma a cellulose. Ma cellulose ether ali ndi zinthu zambiri zapadera, kuphatikizapo kusungirako madzi ambiri, kukhuthala, kumanga, komanso kupanga mafilimu. Zinthu izi zimapangitsa cellulose ether kukhala chinthu chofunikira kwambiri m'makampani ambiri, mankhwala, komanso zinthu zosamalira anthu.

Chimodzi mwazinthu zazikulu za cellulose ether ndi kukhuthala kwake, komwe kumatanthauza kukana kwamadzimadzi kuti aziyenda. Viscosity ndi gawo lofunikira lomwe limakhudza magwiridwe antchito ndikugwiritsa ntchito kwa cellulose ether muzinthu zosiyanasiyana. M'nkhaniyi, tikambirana za viscosity ya cellulose ether, kuphatikizapo muyeso wake, zomwe zimakhudza izo, ndikugwiritsa ntchito m'mafakitale osiyanasiyana.

Kuyeza kwa Viscosity ya Cellulose Ether

Kukhuthala kwa cellulose ether kumayesedwa pogwiritsa ntchito viscometer, chomwe ndi chida chomwe chimayesa kuthamanga kwamadzimadzi potengera mphamvu yokoka kapena mphamvu yokoka. Pali mitundu ingapo ya ma viscometers, kuphatikiza ma rotational, capillary, ndi oscillatory viscometers, iliyonse ili ndi zabwino ndi zolephera zake.

Ma viscometers ozungulira ndi zida zomwe zimagwiritsidwa ntchito kwambiri poyezera kukhuthala kwa cellulose ether. Zidazi zimayezera torque yomwe imayenera kuzunguliridwa ndi spindle kapena rotor yomizidwa mumadzimadzi pafupipafupi. The mamasukidwe akayendedwe ndiye masamu kutengera mgwirizano pakati pa torque ndi kasinthasintha liwiro.

Komano, ma capillary viscometers, amayesa nthawi yofunikira kuti kuchuluka kwamadzimadzi kokhazikika kuyendetse muchubu chopapatiza cha capillary mothandizidwa ndi mphamvu yokoka kapena kuthamanga kwamphamvu. Kukhuthala kumawerengedwa motengera lamulo la Poiseuille, lomwe limakhudzana ndi kuthamanga kwa mamasukidwe akayendedwe, kukula kwa chubu, komanso kuthamanga kwapakati.

Oscillatory viscometers, amene kuyeza mapindikidwe ndi kuchira madzimadzi pansi pa sinusoidal kukameta ubweya kupsyinjika, ntchito kuyeza zovuta mamasukidwe akayendedwe a cellulose ether, amene pafupipafupi amadalira mamasukidwe akayendedwe.

Zinthu Zomwe Zimakhudza Kuwoneka Kwa Ma cellulose Ether

Kukhuthala kwa cellulose ether kumakhudzidwa ndi zinthu zingapo, kuphatikiza kulemera kwake kwa maselo, kuchuluka kwa m'malo, ndende, kutentha, ndi kumeta ubweya.

Kulemera kwa mamolekyulu: Kukhuthala kwa cellulose ether kumawonjezeka ndi kuchuluka kwa kulemera kwa mamolekyulu, popeza ma polima olemera kwambiri amakhala ndi maunyolo ataliatali omwe amamangirizana wina ndi mnzake, zomwe zimapangitsa kukana kuyenda.

Digiri ya m'malo: Digiri ya m'malo (DS) ya cellulose ether, yomwe imatanthawuza kuchuluka kwa magulu a hydroxyl olowa m'malo pamtundu wa shuga mu tcheni cha cellulose, imakhudzanso kukhuthala kwake. Pamene DS ikuwonjezeka, kukhuthala kwa cellulose ether kumawonjezeka chifukwa cha kuchulukana kwa unyolo ndi kuyanjana kwa ma intermolecular.

Kuyikira Kwambiri: Kukhuthala kwa cellulose ether kumachulukirachulukira ndikuchulukirachulukira, popeza kuchuluka kwambiri kumabweretsa kulumikizidwa kwa unyolo ndi kuyanjana kwapakati.

Kutentha: Kukhuthala kwa cellulose ether kumachepa ndi kutentha kwapang'onopang'ono, chifukwa kutentha kwambiri kumayambitsa kusuntha kwa ma cell ndikuchepetsa kuyanjana kwapakati.

Kumeta ubweya wa ubweya: Kukhuthala kwa cellulose ether kumadaliranso kuchuluka kwa shear yomwe imagwiritsidwa ntchito, popeza mitengo yometa ubweya wambiri imatsogolera pakuwonjezereka kwa unyolo ndikuchepetsa kukana kuyenda.

Kugwiritsa Ntchito Cellulose Ether M'mafakitale Osiyanasiyana

Ma cellulose ether amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana chifukwa cha mawonekedwe ake apadera, kuphatikiza mamasukidwe ake. Zina mwazofunikira za cellulose ether m'mafakitale osiyanasiyana zikukambidwa pansipa.

Kumanga: Ma cellulose ether amagwiritsidwa ntchito ngati thickener, chosungira madzi, ndi binder muzomangamanga monga simenti, matope, ndi gypsum. Imawongolera magwiridwe antchito, kusasinthika, komanso kumamatira kwazinthu izi, zomwe zimapangitsa kuti magwiridwe antchito azikhala olimba komanso olimba.

Mankhwala: Ma cellulose ether amagwiritsidwa ntchito ngati chothandizira pakupanga mankhwala monga mapiritsi, makapisozi, ndi zonona. Imawongolera kuyenda, kupanikizika, komanso kukhuthala kwa mapangidwe, zomwe zimapangitsa kuti mankhwalawo azikhala okhazikika komanso okhazikika.