Cellulose etherNdi cellulose yachilengedwe (thonje loyeretsedwa ndi zamkati zamatabwa, ndi zina zotero) monga zipangizo zopangira, pambuyo pa etherification ya mitundu yosiyanasiyana ya zotumphukira, ndi cellulose macromolecule hydroxyl hydrogen ndi gulu la ether lomwe limasinthidwa pang'ono kapena kwathunthu pambuyo pa mapangidwe a zinthu, ndi zotumphukira za cellulose zomwe zimatsikira pansi. Cellulose imatha kusungunuka m'madzi, kuchepetsa yankho la alkali ndi organic solvent pambuyo pa etherification, ndipo ili ndi katundu wa thermoplastic. Cellulose ether mtundu, womwe umagwiritsidwa ntchito kwambiri pomanga, simenti, zokutira, mankhwala, chakudya, mafuta, mankhwala a tsiku ndi tsiku, nsalu, mapepala ndi zida zamagetsi ndi mafakitale ena. Malinga ndi kuchuluka kwa zinthu zomwe zingalowe m'malo mwake zitha kugawidwa mu ether imodzi ndi ether yosakanikirana, malinga ndi ionization zitha kugawidwa mu ionic cellulose ether ndi non-ionic cellulose ether. Pakadali pano, ionic cellulose ether ionic product product production ndi okhwima, osavuta kupanga komanso otsika mtengo, zopinga zochepa zamakampani, zomwe zimagwiritsidwa ntchito makamaka muzowonjezera chakudya, zowonjezera nsalu, mankhwala a tsiku ndi tsiku ndi madera ena, ndiye zinthu zazikulu zopangira pamsika.
Pakadali pano, efa wa cellulose wodziwika bwino padziko lonse lapansi ndiCMC, HPMC, MC, HECndi zina zambiri,CMCChotulutsa ndicho chachikulu kwambiri, chomwe chimapanga pafupifupi theka la zotulutsa padziko lonse lapansi, pomwe HPMC ndi MC zonse zimapanga pafupifupi 33% ya zomwe zimafunika padziko lonse lapansi, HEC imapanga pafupifupi 13% ya msika wapadziko lonse lapansi. Kugwiritsa ntchito kofunikira kwambiri kwa carboxymethyl cellulose (CMC) ndi sopo, komwe kumapanga pafupifupi 22% ya zomwe zimafunika pamsika, ndipo zinthu zina zimagwiritsidwa ntchito kwambiri popanga zipangizo zomangira, chakudya ndi mankhwala.
II. Kugwiritsa ntchito pansi pa madzi
Kale, chifukwa cha kufunikira kochepa kwa cellulose ether m'mankhwala a tsiku ndi tsiku, mankhwala, chakudya, zokutira ndi zina ku China, kufunikira kwa cellulose ether ku China kwenikweni kumakhala kwakukulu m'munda wa zipangizo zomangira, mpaka lero, makampani opanga zida zomangira akadali ndi 33% ya kufunikira kwa cellulose ether ku China. Ndipo monga cellulose ether yaku China m'munda wa kufunikira kwa zipangizo zomangira kwakhala kodzaza, m'mankhwala a tsiku ndi tsiku, mankhwala, chakudya, zokutira ndi zina zomwe zimafunidwa zikukula mofulumira ndi chitukuko cha ukadaulo wogwiritsa ntchito. Mwachitsanzo, m'zaka zaposachedwa, kapisozi wa chomera wokhala ndi cellulose ether ngati zinthu zazikulu zopangira, komanso zinthu zomwe zikubwera zopangidwa ndi nyama yopangira yokhala ndi cellulose ether zili ndi mwayi waukulu wofuna komanso malo okulirapo.
Mwachitsanzo, pankhani ya zipangizo zomangira, ether ya cellulose yokhala ndi makulidwe, kusunga madzi, kuzizira pang'onopang'ono ndi makhalidwe ena abwino kwambiri, kotero ether ya cellulose ya grade grade ya zipangizo zomangira imagwiritsidwa ntchito kwambiri kuti ikonze bwino magwiridwe antchito a zinthu zomangira kuphatikizapo matope osakaniza okonzeka (kuphatikiza matope osakaniza onyowa ndi matope osakaniza owuma), kupanga PVC resin, utoto wa latex, putty, ndi zina zotero. Chifukwa cha kusintha kwa kuchuluka kwa mizinda ku China, chitukuko chachangu cha makampani omangira, mulingo wa makina omangira ukupitirirabe kukula, ndipo zosowa zachilengedwe za ogula pazinthu zomangira zikukwera kwambiri, zomwe zimapangitsa kuti pakhale kufunikira kwa ether ya cellulose yosakhala ionic m'munda wa zipangizo zomangira. Munthawi ya 13 ya Dongosolo la Zaka Zisanu, China idafulumizitsa kukonzanso madera owonongeka ndi nyumba zowonongeka m'mizinda, ndikulimbitsa kumanga zomangamanga zamizinda, kuphatikiza kufulumizitsa kukonzanso madera owonongeka ndi midzi m'mizinda, ndikulimbikitsa mwadongosolo kukonzanso kwathunthu madera akale okhala ndi kukonzanso nyumba zakale zowonongeka ndi nyumba zosakwanira. Mu theka loyamba la chaka cha 2021, malo okhala okwana masikweya mita 755.15 miliyoni adayambitsidwa, kukwera ndi 5.5 peresenti. Malo omalizidwa a nyumba ndi 364.81 miliyoni masikweya mita, kukwera ndi 25.7%. Kubwereranso kwa malo omalizidwa a nyumba kudzapangitsa kuti pakhale kufunikira kofunikira pa ntchito yomanga zinthu za cellulose ether.
3. Kachitidwe ka mpikisano pamsika
China ndi dziko lopanga zinthu zopangidwa ndi cellulose ether padziko lonse lapansi, pakadali pano, zinthu zomangira zapakhomo zili ndi cellulose ether, ndipo makampani akuluakulu opanga zinthu zomangira a Anxin Chemistry akuphatikizapo Kima Chemical ndi zina zotero. Pamwamba pa ❖ kuyanika, mankhwala a cellulose ether, omwe ndi a ku United States Dow, Ashland, Japan Shinetsu, South Korea Lotte ndi makampani ena akunja. Kuwonjezera pa Anxin chemistry, makampani ambiri opanga zinthu zopangidwa ndi cellulose ether, amapanga zinthu zopangidwa ndi cellulose ether, ndipo palibe mphamvu yopangira zinthu zambiri zapamwamba komanso zopangira mankhwala.
Zinayi, vuto la kuitanitsa ndi kutumiza zinthu kunja kwa cellulose ether
Mu 2020, chifukwa cha mliri wakunja, mphamvu zopanga mabizinesi akunja zinachepa, kutumiza kunja kwa cellulose ether ku China kunawonetsa kukula mwachangu, mu 2020 kuti kufikire kutumiza kunja kwa cellulose ether matani 77,272. Ngakhale kuchuluka kwa cellulose ether ku China kumakula mwachangu, zinthu zogulitsa kunja zimadalira kwambiri zinthu zomangira cellulose ether, pomwe kuchuluka kwa mankhwala ndi edible cellulose ether ndi kochepa kwambiri, ndipo mtengo wowonjezera wa zinthu zogulitsa kunja ndi wotsika. Pakadali pano, kuchuluka kwa cellulose ether ku China ndi kanayi kuposa kuchuluka kwa zinthu zogulitsa kunja, koma kuchuluka kwa zinthu zogulitsa kunja ndi kochepera kawiri kuposa kuchuluka kwa zinthu zogulitsa kunja. M'munda wa zinthu zapamwamba, njira yosinthira zinthu zogulitsa kunja kwa cellulose ether ikadali malo akuluakulu oti chitukuko chikhalepo.
Nthawi yotumizira: Epulo-25-2024