Cellulose etherizwi rekuti zvinhu zvakasiyana-siyana zvinobva mu cellulose yechisikigo (donje rakacheneswa uye pulp yehuni, nezvimwewo). Chigadzirwa chinobuda chinobva mu cellulose. Mushure me etherification, cellulose inonyungudika mumvura, inonyungudutsa alkali solution uye organic solvent, uye ine thermoplasticity. Kune mhando dzakawanda dze cellulose ethers, dzinoshandiswa zvakanyanya mukuvaka, simende, pendi, mushonga, chikafu, peturu, makemikari ezuva nezuva, machira, kugadzira mapepa uye zvikamu zvemagetsi nemamwe maindasitiri. Zvichienderana nehuwandu hwezvinotsiva, inogona kukamurwa kuita single ether ne mixed ether, uye zvichienderana ne ionization, inogona kukamurwa kuita ionic cellulose ether ne non-ionic cellulose ether. Parizvino, zvigadzirwa zve ionic cellulose ether zvine tekinoroji yekugadzira yakakura, kugadzirira kuri nyore, mutengo wakaderera, uye zvipingamupinyi zveindasitiri zvakaderera. Zvinonyanya kushandiswa muzvikafu zvinowedzerwa, machira anobatsira, makemikari ezuva nezuva nedzimwe nzvimbo, uye ndizvo zvigadzirwa zvikuru mumusika.
Parizvino, ma cellulose ethers epasi rose ariCMC, HPMC, MC, HEC, nezvimwewo. Pakati pazvo, CMC ndiyo ine goho guru, ichitora hafu yegoho repasi rose, nepo HPMC neMC zvichitora 33% yegoho repasi rose, uyeHECinoumba inenge 50% yezvinodiwa pasi rose. 13% yemusika. Chinhu chinonyanya kukosha kushandiswa kwecarboxymethyl cellulose (CMC) idetergent, inoumba inenge 22% yezvinodiwa pamusika, uye zvimwe zvigadzirwa zvinonyanya kushandiswa muminda yezvinhu zvekuvaka, chikafu nemishonga.
Mapurogiramu epasi
Kare, nekuda kwekusakura kwezvinodiwa zve cellulose ether munyika yangu muminda yemakemikari ezuva nezuva, mishonga, chikafu, machira, nezvimwewo, kudiwa kwe cellulose ether muChina kwainyanya kutaurwa muminda yezvinhu zvekuvaka. Kusvika nhasi, indasitiri yezvinhu zvekuvaka ichiri kuita 33% yezvinodiwa zve cellulose ether munyika yangu. Kudiwa kwe cellulose ether yenyika yangu muminda yezvinhu zvekuvaka kwazara, uye kudiwa kwemakemikari ezuva nezuva, mishonga, chikafu, machira, nezvimwewo kuri kukura nekukurumidza nekuvandudzwa kwetekinoroji yekushandisa. Semuenzaniso, mumakore achangopfuura, makapisi emuriwo ane cellulose ether sechinhu chikuru chisina kugadzirwa, uye nyama yekugadzira, chigadzirwa chiri kubuda chakagadzirwa ne cellulose ether, chine mukana wakakura wekudiwa uye nzvimbo yekukura.
Tichitora munda wezvinhu zvekuvaka semuenzaniso, cellulose ether ine hunhu hwakanaka hwakadai sekukora, kuchengetedza mvura, uye kunonoka. Nokudaro, cellulose ether yemhando yezvivakwa inoshandiswa zvakanyanya kuvandudza kugadzirwa kwemota yakasanganiswa (kusanganisira mota yakasanganiswa yakanyorova uye mota yakasanganiswa yakaoma), PVC resin, nezvimwewo, latex pendi, putty, nezvimwewo, kusanganisira mashandiro ezvigadzirwa zvekuvaka. Nekuda kwekuvandudzwa kwedanho rekukura kwemaguta munyika yangu, kukura nekukurumidza kweindasitiri yezvinhu zvekuvaka, kuvandudzwa kuri kuramba kuchienderera mberi kwehuwandu hwemichina yekuvaka, uye kuwedzera kwezvinodiwa zvekuchengetedza zvakatipoteredza zvevatengi vezvinhu zvekuvaka zvakakonzera kudiwa kwe non-ionic cellulose ethers mumunda wezvinhu zvekuvaka. Munguva yechirongwa chemakore mashanu chegumi nematatu, nyika yangu yakakurumidzisa kushandurwa kwemataundi emaguta nedzimba dzakasakara, uye yakasimbisa kuvakwa kwezvivakwa zvemaguta, kusanganisira kukurumidzisa kushandurwa kwemataundi emaguta akabatana nemisha yemaguta, kusimudzira zvakarongeka kugadziriswa kwedzimba dzekare dzekugara, dzimba dzekare dzakasakara uye maseti asina kukwana Kugadziriswa kwedzimba nezvimwe. Muhafu yekutanga yegore ra2021, nzvimbo yezvivakwa zvitsva zvekugara zvemumba yaive 755.15 miriyoni square metres, kuwedzera kwe5.5%. Nzvimbo yedzimba yakapedzwa yaive 364.81 miriyoni square metres, kuwedzera kwe25.7%. Kudzorerwa kwenzvimbo yakapedzwa yezvivakwa kuchawedzera kudiwa kwakabatana mumunda wezvinhu zvekuvaka zve cellulose ether.
Maitiro emakwikwi emusika
Nyika yangu ndiyo inogadzira cellulose ether yakawanda pasi rose. Padanho rino, cellulose ether yemhando yezvivakwa zvemumba yave kuwanikwa munzvimbo dzakasiyana. Shandong Heda ndiyo kambani inotungamira mukugadzira cellulose ether muChina. Vamwe vagadziri vakuru vemumba vanosanganisira Shandong Ruitai, Shandong Yiteng, neNorth Tianpu Chemical, Yicheng Cellulose, nezvimwewo. Cellulose ethers dzemhando yeCoating, Pharmaceutical uye Food-grade pari zvino dzinonyanya kushandiswa nemakambani ekunze akadai seDow, Ashland, Shin-Etsu, naLotte. Kuwedzera kuShandong Heda nedzimwe makambani ane kugona kudarika matani zviuru gumi, kune vagadziri vadiki vakawanda venon-ionic cellulose ethers dzine kugona kwematani chiuru. Zvigadzirwa zvepamusoro zvechikafu nezvigadzirwa zvemhando yepamusoro.
Kupinza uye kutumira kunze kwe cellulose ether
Muna 2020, nekuda kwekuderera kwesimba rekugadzira makambani ekunze nekuda kwedenda rekunze kwenyika, huwandu hwe cellulose ether inotengeswa kunze kwenyika munyika yangu hwaratidza kukura nekukurumidza. Muna 2020, kutengeswa kwe cellulose ether kunozosvika matani 77,272. Kunyangwe huwandu hwenyika yangu hwekutumira kunze kwenyika hwakawedzera.ether ye celluloseYakura nekukurumidza, zvigadzirwa zvinotumirwa kunze kwenyika zvinonyanya kuve zvekuvaka cellulose ether, nepo huwandu hwekutengesa kunze kwenyika hwekurapa uye hwechikafu hwakaderera, uye kukosha kwakawedzerwa kwezvinhu zvinotumirwa kunze kwenyika kwakaderera. Parizvino, huwandu hwekutengesa kunze kwenyika hwe cellulose ether yenyika yangu hwakapetwa kana kupfuura huwandu hwekutumira kunze, asi kukosha kwekutengesa kunze kwenyika kwakaderera kupfuura kaviri kukosha kwekutumira kunze. Mumunda wezvigadzirwa zvepamusoro-soro, maitiro ekutsiva kunze kwenyika kwe cellulose ether yemumba achiri nenzvimbo yakawanda yekuvandudzwa.
Nguva yekutumira: Kubvumbi-26-2024