Cellulose etheryog cellulose ntuj (paj rwb zoo thiab ntoo pulp, thiab lwm yam) ua raw khoom, tom qab etherification ntawm ntau yam derivatives, yog cellulose macromolecule hydroxyl hydrogen los ntawm ether pawg ib nrab lossis tag nrho hloov tom qab tsim cov khoom, yog cov derivatives downstream ntawm cellulose. Cellulose tuaj yeem yaj hauv dej, dilute alkali kua thiab organic solvent tom qab etherification, thiab muaj cov khoom thermoplastic. Cellulose ether ntau yam, dav siv hauv kev tsim kho, cement, txheej, tshuaj, khoom noj, roj av, tshuaj txhua hnub, textile, ntawv thiab cov khoom siv hluav taws xob thiab lwm yam lag luam. Raws li tus lej ntawm cov substituents tuaj yeem faib ua ib qho ether thiab sib xyaw ether, raws li ionization tuaj yeem faib ua ionic cellulose ether thiab non-ionic cellulose ether. Tam sim no, ionic cellulose ether ionic khoom tsim cov txheej txheem yog mature, yooj yim ua thiab tus nqi qis, qis qis kev lag luam teeb meem, feem ntau siv hauv cov khoom noj khoom haus additives, textile additives, tshuaj txhua hnub thiab lwm yam teb, yog cov khoom tsim khoom tseem ceeb hauv kev ua lag luam.
Tam sim no, lub ntiaj teb cov cellulose ether tseem ceeb yogCMC, HPMC, MC, HECthiab lwm yam ntau yam,CMCCov zis yog qhov loj tshaj plaws, suav txog li ib nrab ntawm cov zis thoob ntiaj teb, thaum HPMC thiab MC ob leeg suav txog li 33% ntawm qhov kev thov thoob ntiaj teb, HEC suav txog li 13% ntawm kev lag luam thoob ntiaj teb. Qhov tseem ceeb tshaj plaws ntawm carboxymethyl cellulose (CMC) yog tshuaj ntxuav tes, suav txog li 22% ntawm qhov kev thov lag luam downstream, thiab lwm yam khoom siv feem ntau yog siv rau hauv cov ntaub ntawv tsim kho, khoom noj thiab tshuaj.
II. Daim ntawv thov hauv qab
Yav dhau los, vim muaj kev thov tsawg ntawm cellulose ether hauv cov tshuaj txhua hnub, tshuaj, khoom noj, txheej thiab lwm yam hauv Suav teb, qhov kev thov rau cellulose ether hauv Suav teb feem ntau yog tsom mus rau cov khoom siv hauv tsev, txog niaj hnub no, kev lag luam khoom siv hauv tsev tseem nyob 33% ntawm qhov kev thov rau cellulose ether hauv Suav teb. Thiab zoo li Tuam Tshoj cov cellulose ether hauv kev lag luam khoom siv hauv tsev qhov kev thov tau dhau los ua qhov txaus, hauv cov tshuaj txhua hnub, tshuaj, khoom noj, txheej thiab lwm yam kev thov tau loj hlob sai nrog kev txhim kho ntawm kev siv tshuab. Piv txwv li, nyob rau xyoo tas los no, cov nroj tsuag capsule nrog cellulose ether ua cov khoom siv raw tseem ceeb, nrog rau cov khoom tshiab ua los ntawm cov nqaij dag nrog cellulose ether muaj kev cia siab dav thiab qhov chaw loj hlob.
Piv txwv li, hauv kev lag luam ntawm cov ntaub ntawv siv hauv tsev, cellulose ether nrog cov tuab, khaws dej, qeeb condensation thiab lwm yam zoo heev, yog li cov ntaub ntawv siv hauv tsev qib cellulose ether yog siv dav los txhim kho kev ua tau zoo ntawm cov khoom siv hauv tsev suav nrog cov mortar sib xyaw ua ke (suav nrog cov mortar sib xyaw ntub thiab cov mortar sib xyaw qhuav), PVC resin tsim, xim latex, putty, thiab lwm yam. Ua tsaug rau kev txhim kho ntawm qib kev loj hlob hauv nroog hauv Suav teb, kev txhim kho sai ntawm kev lag luam ntaub ntawv siv hauv tsev, qib kev siv tshuab hauv kev tsim kho txuas ntxiv mus zoo dua, thiab cov neeg siv khoom xav tau ib puag ncig rau cov ntaub ntawv siv hauv tsev tau nce siab thiab siab dua, ua rau muaj kev thov rau non-ionic cellulose ether hauv kev lag luam ntaub ntawv siv hauv tsev. Thaum lub sijhawm 13th Tsib-Xyoo Txoj Kev Npaj, Suav teb tau ua kom nrawm dua kev kho dua tshiab ntawm cov chaw puas tsuaj thiab cov tsev puas tsuaj hauv nroog, thiab txhawb nqa kev tsim kho cov hauv paus hauv nroog, suav nrog kev ua kom nrawm dua kev kho dua tshiab ntawm cov chaw puas tsuaj thiab cov zos hauv nroog, thiab txhawb nqa kev kho dua tshiab ntawm cov chaw nyob qub thiab kev kho dua tshiab ntawm cov tsev qub thiab cov tsev tsis tiav. Nyob rau thawj ib nrab ntawm xyoo 2021, 755.15 lab square meters ntawm qhov chaw nyob tau pib, nce 5.5 feem pua. Thaj chaw ua tiav ntawm cov tsev yog 364.81 lab square meters, nce 25.7%. Kev rov qab los ntawm thaj chaw ua tiav ntawm cov vaj tse yuav tsav qhov kev thov tseem ceeb hauv thaj chaw ntawm cov ntaub ntawv tsim kho cellulose ether.
3. Tus qauv kev sib tw ua lag luam
Tuam Tshoj yog lub teb chaws tsim cov cellulose ether thoob ntiaj teb, tam sim no cov khoom siv hauv tsev hauv tsev tau ua tiav qhov chaw, Anxin Chemistry yog cov thawj coj hauv kev lag luam cellulose ether, lwm cov tuam txhab loj hauv tsev kuj suav nrog Kima Chemical thiab lwm yam. Qib txheej, cov khoom noj khoom haus tshuaj cellulose ether tam sim no feem ntau yog Tebchaws Meskas Dow, Ashland, Nyiv shinetsu, Kaus Lim Qab Teb Lotte thiab lwm lub tuam txhab txawv teb chaws. Ntxiv rau Anxin chemistry ntau tshaj kaum txhiab tons ntawm cov tuam txhab, ntau txhiab tons ntawm cov tuam txhab me me uas tsis yog ionic cellulose ether, feem ntau ntawm cov tuam txhab me me no tsim cov qauv khoom siv hauv tsev zoo li qub, thiab tsis muaj zog los tsim cov khoom noj khoom haus thiab tshuaj zoo dua.
Plaub, cellulose ether ntshuam thiab xa tawm qhov xwm txheej
Xyoo 2020, vim muaj kev sib kis thoob ntiaj teb ua rau muaj kev poob qis ntawm cov tuam txhab txawv teb chaws lub peev xwm tsim khoom, Tuam Tshoj txoj kev xa khoom cellulose ether tau qhia txog kev loj hlob sai, xyoo 2020 kom ua tiav kev xa khoom ntawm cellulose ether 77,272 tons. Txawm hais tias qhov ntim xa khoom ntawm cellulose ether hauv Suav teb loj hlob sai dua, cov khoom xa tawm feem ntau yog raws li cov khoom siv hauv tsev cellulose ether, thaum qhov ntim xa khoom ntawm kev kho mob thiab cellulose ether noj tau me me heev, thiab tus nqi ntxiv ntawm cov khoom xa tawm tsawg. Tam sim no, qhov ntim xa khoom ntawm cellulose ether hauv Suav teb yog plaub npaug ntawm qhov ntim xa khoom tuaj, tab sis qhov ntim xa khoom tsawg dua ob npaug ntawm qhov ntim xa khoom tuaj. Hauv thaj chaw ntawm cov khoom lag luam siab, cov txheej txheem xa khoom hloov pauv cellulose ether hauv tsev tseem yog qhov chaw loj rau kev txhim kho.
Lub sijhawm tshaj tawm: Plaub Hlis-25-2024