SelosiNdi gawo lalikulu la makoma a maselo a zomera, ndipo ndi polysaccharide yofalikira kwambiri komanso yochuluka kwambiri m'chilengedwe, yomwe imapanga zoposa 50% ya kaboni m'boma la zomera. Pakati pawo, kuchuluka kwa cellulose mu thonje kuli pafupi ndi 100%, komwe ndi gwero lenileni la cellulose. Kawirikawiri matabwa, cellulose imakhala ndi 40-50%, ndipo pali 10-30% hemicellulose ndi 20-30% lignin. Cellulose ether ndi mawu ofala a mitundu yosiyanasiyana ya zinthu zomwe zimapezeka kuchokera ku cellulose yachilengedwe ngati zinthu zopangira kudzera mu etherification. Ndi chinthu chomwe chimapangidwa pambuyo poti magulu a hydroxyl pa macromolecule a cellulose asinthidwa pang'ono kapena kwathunthu ndi magulu a ether. Pali ma hydrogen bonds a intra-chain ndi inter-chain mu macromolecule a cellulose, omwe ndi ovuta kusungunuka m'madzi ndi pafupifupi organic solvents onse, koma pambuyo pa etherification, kuyambitsidwa kwa magulu a ether kumatha kusintha hydrophilicity ndikuwonjezera kwambiri kusungunuka m'madzi ndi organic solvents. Katundu wosungunuka.
Cellulose ether ili ndi mbiri ya "industrial monosodium glutamate". Ili ndi zinthu zabwino kwambiri monga kukhuthala kwa yankho, kusungunuka bwino kwa madzi, kukhazikika kwa kuyimitsidwa kapena latex, kupanga filimu, kusunga madzi, ndi kumatira. Siilinso poizoni komanso yopanda kukoma, ndipo imagwiritsidwa ntchito kwambiri mu Zipangizo zomangira, mankhwala, chakudya, nsalu, mankhwala a tsiku ndi tsiku, kufufuza mafuta, migodi, kupanga mapepala, polymerization, ndege ndi zina zambiri. Cellulose ether ili ndi ubwino wogwiritsidwa ntchito kwambiri, kugwiritsa ntchito pang'ono mayunitsi, kusintha bwino, komanso kusamala chilengedwe. Ikhoza kusintha kwambiri ndikukonza magwiridwe antchito azinthu m'munda wowonjezera, zomwe zimathandiza kukonza kugwiritsa ntchito bwino zinthu komanso phindu lowonjezera zinthu. Zowonjezera zachilengedwe zomwe ndizofunikira m'magawo osiyanasiyana.
Malinga ndi ionization ya cellulose ether, mtundu wa zinthu zomwe zimalowa m'malo mwake komanso kusiyana kwa kusungunuka, cellulose ether imatha kugawidwa m'magulu osiyanasiyana. Malinga ndi mitundu yosiyanasiyana ya zinthu zomwe zimalowa m'malo mwake, cellulose ether imatha kugawidwa m'ma single ethers ndi mixed ethers. Malinga ndi kusungunuka, cellulose ether imatha kugawidwa m'zinthu zomwe zimasungunuka m'madzi ndi zomwe sizisungunuka m'madzi. Malinga ndi ionization, imatha kugawidwa m'zinthu zomwe zimasungunuka m'madzi, zomwe sizisungunuka m'madzi ndi zomwe sizisungunuka m'madzi. Pakati pa ma cellulose ether osungunuka m'madzi, ma non-ionic cellulose ethers monga HPMC ali ndi kukana kutentha bwino komanso kukana mchere kuposa ma ionic cellulose ethers (CMC).
Kodi ether ya cellulose imasintha bwanji mumakampani?
Cellulose ether imapangidwa kuchokera ku thonje loyengedwa bwino kudzera mu alkaliization, etherification ndi njira zina. Njira yopangira HPMC ya mankhwala ndi HPMC ya chakudya ndi yofanana. Poyerekeza ndi ether ya cellulose ya zinthu zomangira, njira yopangira HPMC ya mankhwala ndi HPMC ya chakudya imafuna etherification yokhazikika, yomwe ndi yovuta, yovuta kuwongolera njira yopangira, ndipo imafuna ukhondo wambiri wa zida ndi malo opangira.
Malinga ndi deta yoperekedwa ndi China Cellulose Industry Association, mphamvu yonse yopangira ya opanga ma ether a cellulose omwe si a ionic omwe ali ndi mphamvu yayikulu yopangira zinthu m'nyumba, monga Hercules Temple, Shandong Heda, ndi zina zotero, imaposa 50% ya mphamvu yonse yopangira dziko. Pali opanga ena ambiri ang'onoang'ono a cellulose ether omwe si a ionic omwe ali ndi mphamvu yopangira zosakwana matani 4,000. Kupatula mabizinesi ochepa, ambiri a iwo amapanga ma ether a cellulose wamba, omwe ali ndi mphamvu yonse yopangira pafupifupi matani 100,000 pachaka. Chifukwa cha kusowa mphamvu zachuma, mabizinesi ambiri ang'onoang'ono amalephera kukwaniritsa miyezo yoteteza chilengedwe poika ndalama pakukonza madzi ndi kuyeretsa mpweya wotulutsa utsi kuti achepetse ndalama zopangira. Pamene dziko ndi anthu onse akusamala kwambiri za kuteteza chilengedwe, mabizinesi omwe ali m'makampani omwe sangathe kukwaniritsa zofunikira zoteteza chilengedwe adzatseka pang'onopang'ono kapena kuchepetsa kupanga. Panthawiyo, kuchuluka kwa makampani opanga ma ether a cellulose m'dziko langa kudzawonjezeka kwambiri.
Ndondomeko zoteteza chilengedwe m'nyumba zikukulirakulira, ndipo zofunikira zokhwima zikuperekedwa paukadaulo woteteza chilengedwe komanso ndalama zomwe zimagwiritsidwa ntchito popanga zinthu.ether ya cellulose. Njira zapamwamba zotetezera chilengedwe zimawonjezera mtengo wopanga mabizinesi komanso zimapangitsa kuti pakhale malire apamwamba oteteza chilengedwe. Mabizinesi omwe sangakwaniritse zofunikira zoteteza chilengedwe mwina adzatsekedwa pang'onopang'ono kapena kuchepetsa kupanga chifukwa cholephera kukwaniritsa miyezo yoteteza chilengedwe. Malinga ndi zomwe kampaniyo ikunena, mabizinesi omwe amachepetsa pang'onopang'ono kupanga ndikuyimitsa kupanga chifukwa cha zinthu zoteteza chilengedwe angaphatikizepo kupereka matani pafupifupi 30,000 pachaka a zinthu wamba zomangira za cellulose ether, zomwe zimathandiza kuti mabizinesi opindulitsa akule.
Kutengera ndi ether ya cellulose, ikupitilizabe kufalikira kuzinthu zapamwamba komanso zopindulitsa kwambiri
Nthawi yotumizira: Epulo-25-2024