Cellulose etherndi mawu wamba kwa zosiyanasiyana zotumphukira anapezedwa masoka mapadi (woyengedwa thonje ndi nkhuni zamkati, etc.) chifukwa mankhwala ndi lochokera kumunsi kwa mapadi a cellulose. Pambuyo pa etherification, mapadi amatha kusungunuka m'madzi, kusungunula alkali solution ndi organic solvent, ndipo amakhala ndi thermoplasticity. Pali mitundu yambiri ya ma cellulose ethers, omwe amagwiritsidwa ntchito kwambiri pomanga, simenti, utoto, mankhwala, chakudya, mafuta, mankhwala a tsiku ndi tsiku, nsalu, kupanga mapepala ndi zipangizo zamagetsi ndi mafakitale ena. Malinga ndi kuchuluka kwa zolowa m'malo, zimatha kugawidwa kukhala ether imodzi ndi ether yosakanikirana, ndipo malinga ndi ionization, imatha kugawidwa kukhala ionic cellulose ether ndi non-ionic cellulose ether. Pakalipano, mankhwala a ionic cellulose ether ionic ali ndi luso lopanga kupanga, kukonzekera kosavuta, mtengo wotsika, komanso zolepheretsa makampani otsika. Amagwiritsidwa ntchito kwambiri pazowonjezera chakudya, zowonjezera zovala, mankhwala atsiku ndi tsiku ndi magawo ena, ndipo ndizomwe zimagulitsidwa pamsika.
Pakalipano, ma cellulose ether omwe amapezeka padziko lonse lapansi ndiCMC, HPMC, MC, HEC, etc. Pakati pawo, CMC ali ndi linanena bungwe lalikulu, mlandu pafupifupi theka la linanena bungwe lonse, pamene HPMC ndi MC nkhani pafupifupi 33% ya kufunika padziko lonse, ndiHECamawerengera pafupifupi 50% ya zomwe zimafunikira padziko lonse lapansi. 13% ya msika. Kugwiritsidwa ntchito kofunikira kwambiri kwa carboxymethyl cellulose (CMC) ndi zotsukira, zomwe zimawerengera pafupifupi 22% yazomwe zimafunikira pamsika, ndipo zinthu zina zimagwiritsidwa ntchito makamaka pantchito zomanga, chakudya ndi mankhwala.
Mapulogalamu apansi
M'mbuyomu, chifukwa cha chitukuko chochepa cha dziko langa lofuna ma cellulose ether m'minda ya mankhwala a tsiku ndi tsiku, mankhwala, chakudya, zokutira, etc., kufunika kwa cellulose ether ku China kunali kokhazikika m'munda wa zipangizo zomangira. Mpaka lero, makampani opanga zida zomangira akadali 33% ya zofuna za cellulose ether za dziko langa. Kufunika kwa dziko langa cellulose ether m'munda wa zipangizo zomangira wakhala anakhuta, ndi kufunika m'minda ya tsiku ndi tsiku mankhwala, mankhwala, chakudya, zokutira, etc. ikukula mofulumira ndi chitukuko cha luso ntchito. Mwachitsanzo, m'zaka zaposachedwa, makapisozi amasamba okhala ndi cellulose ether monga zopangira zazikulu, ndi nyama yokumba, yomwe ikubwera yopangidwa ndi cellulose ether, imakhala ndi chiyembekezo chofuna zambiri komanso malo okulirapo.
Kutengera gawo la zida zomangira mwachitsanzo, cellulose ether ili ndi zinthu zabwino kwambiri monga kukhuthala, kusunga madzi, ndi kuchedwa. Choncho, zomangira kalasi mapadi ether chimagwiritsidwa ntchito bwino kupanga matope okonzeka-osakaniza (kuphatikizapo chonyowa wothira matope ndi youma wothira matope), PVC utomoni, etc. Tithokoze chifukwa cha kutukuka kwa mizinda ya dziko langa, kutukuka kwachangu kwamakampani opanga zida zomangira, kuwongolera kosalekeza kwa makina omanga, komanso kuchuluka kwachitetezo chachitetezo kwa ogula pazida zomangira kwachititsa kufunikira kwa ma cellulose ether omwe si a ionic pagawo lazomangamanga. M’nthawi ya 13th Year Plan Plan, dziko langa linafulumizitsa kusintha kwa midzi ya m’tauni ndi nyumba zowonongeka, ndi kulimbikitsa ntchito yomanga midzi ya m’tauni, kuphatikizapo kufulumizitsa kusintha kwa midzi ya m’tauni yaing’ono ndi midzi ya m’tauni, mwadongosolo kulimbikitsa kukonzanso kwakukulu kwa nyumba zakale zogonamo, kukonzanso nyumba zakale zosagwedera ndi kugwetsa nyumba zambiri zosawonongeka. Mu theka loyamba la 2021, malo okhalamo nyumba zogona kumene anali 755.15 miliyoni masikweya mita, kuwonjezeka kwa 5.5%. Malo omalizidwa a nyumba anali 364.81 miliyoni masikweya mita, kuwonjezeka kwa 25.7%. Kubwezeretsedwa kwa malo omalizidwa a malo ogulitsa nyumba kudzayendetsa zofunikira zokhudzana ndi gawo la cellulose ether zomangira.
Mpikisano wa msika
Dziko langa ndilopanga kwambiri ma cellulose ether padziko lonse lapansi. Pakadali pano, zomangira zapakhomo za cellulose ether zakhala zikudziwika. Shandong Heda ndi kampani yotsogolera m'munda wa cellulose ether ku China. Opanga ena akuluakulu apanyumba akuphatikizapo Shandong Ruitai, Shandong Yiteng, ndi North Tianpu Chemical, Yicheng Cellulose, ndi zina zotero. Ma ether a cellulose-grade, mankhwala ndi chakudya amayendetsedwa ndi makampani akunja monga Dow, Ashland, Shin-Etsu, ndi Lotte. Kuphatikiza pa Shandong Heda ndi makampani ena omwe ali ndi mphamvu yoposa matani 10,000, pali opanga ang'onoang'ono opanga ma ethers a cellulose omwe ali ndi mphamvu ya matani 1,000. Zakudya zapamwamba komanso zopangira mankhwala.
Kulowetsa ndi kutumiza kunja kwa cellulose ether
Mu 2020, chifukwa cha kuchepa kwa kuchuluka kwa makampani akunja chifukwa cha mliri wakunja, kuchuluka kwa cellulose ether m'dziko langa kwawonetsa kukula mwachangu. Mu 2020, kutumiza kunja kwa cellulose ether kudzafika matani 77,272. Ngakhale kuchuluka kwa katundu wa dziko langacellulose etherwakula mofulumira, zinthu zomwe zimatumizidwa kunja makamaka zimamanga zinthu za cellulose ether, pamene kuchuluka kwa mankhwala ndi chakudya kalasi ya cellulose ether ndi yaying'ono kwambiri, ndipo mtengo wowonjezera wa katundu wogulitsa kunja ndi wotsika. Pakali pano, kuchuluka kwa katundu wa cellulose ether ya dziko langa ndi kuwirikiza kanayi voliyumu yochokera kunja, koma mtengo wotumizira kunja ndi wocheperapo kuwirikiza kawiri mtengo wamtengo wapatali. M'munda wa zinthu zapamwamba, njira yotumizira kunja kwa cellulose ether yapakhomo ikadali ndi malo ambiri opangira chitukuko.
Nthawi yotumiza: Apr-26-2024