Ma cellulosendiye chigawo chachikulu cha makoma a maselo a zomera, ndipo ndi polysaccharide yofalitsidwa kwambiri komanso yochuluka kwambiri m'chilengedwe, yomwe imakhala yoposa 50% ya mpweya wa carbon mu ufumu wa zomera. Pakati pawo, thonje ya cellulose ili pafupi ndi 100%, yomwe ndi gwero lachilengedwe la cellulose. Mwambiri nkhuni, mapadi amawerengera 40-50%, ndipo pali 10-30% hemicellulose ndi 20-30% lignin. Cellulose ether ndi liwu lodziwika bwino lazinthu zosiyanasiyana zochokera ku cellulose yachilengedwe monga zinthu zopangira kudzera mu etherification. Ndi mankhwala opangidwa pambuyo poti magulu a hydroxyl pa cellulose macromolecules atasinthidwa pang'ono kapena kwathunthu ndi magulu a ether. Pali intra-unyolo ndi yapakati-unyolo zomangira wa haidrojeni mu mapadi macromolecules, amene n'zovuta kupasuka m'madzi ndi pafupifupi zosungunulira organic, koma pambuyo etherification, kumayambiriro magulu etere akhoza kusintha hydrophilicity ndi kuonjezera kwambiri solubility m'madzi ndi zosungunulira organic. Solubility katundu.
Ma cellulose ether ali ndi mbiri ya "industrial monosodium glutamate". Ili ndi zinthu zabwino kwambiri monga kukhuthala kwa yankho, kusungunuka kwamadzi bwino, kuyimitsidwa kapena kukhazikika kwa latex, kupanga filimu, kusunga madzi, ndi kumamatira. Ndiwopanda poizoni komanso wosakoma, ndipo amagwiritsidwa ntchito kwambiri mu Zomangamanga, mankhwala, chakudya, nsalu, mankhwala a tsiku ndi tsiku, kufufuza mafuta, migodi, kupanga mapepala, polymerization, ndege ndi zina zambiri. Ma cellulose ether ali ndi maubwino ogwiritsira ntchito kwambiri, kugwiritsa ntchito kagawo kakang'ono, kusintha kwabwino, komanso kusamala zachilengedwe. Itha kuwongolera bwino ndikuwongolera magwiridwe antchito pazowonjezera zake, zomwe zimathandizira kuwongolera bwino kagwiritsidwe ntchito kazinthu komanso mtengo wowonjezera wazinthu. Zowonjezera zachilengedwe zomwe zili zofunika m'magawo osiyanasiyana.
Malinga ndi ionization ya cellulose ether, mtundu wa zolowa m'malo ndi kusiyana kwa kusungunuka, cellulose ether imatha kugawidwa m'magulu osiyanasiyana. Malinga ndi mitundu yosiyanasiyana ya zolowa m'malo, ma cellulose ether amatha kugawidwa kukhala ma ether amodzi ndi ma ether osakanikirana. Malinga ndi kusungunuka, cellulose ether imatha kugawidwa m'madzi osungunuka komanso osasungunuka m'madzi. Malinga ndi ionization, itha kugawidwa mu ionic, non-ionic ndi mankhwala osakaniza. Pakati pa ma ether a cellulose osungunuka m'madzi, ma ether omwe si a ionic cellulose monga HPMC ali ndi kukana kutentha kwambiri komanso kukana mchere kuposa ma ionic cellulose ethers (CMC).
Kodi cellulose ether ikukwera bwanji pamsika?
Ma cellulose ether amapangidwa kuchokera ku thonje woyengedwa kudzera mu alkalization, etherification ndi njira zina. Kapangidwe ka kalasi yamankhwala HPMC ndi kalasi yazakudya HPMC ndizofanana. Poyerekeza ndi zomangira kalasi mapadi ether, ndondomeko kupanga mankhwala kalasi HPMC ndi chakudya kalasi HPMC amafuna anachita etherification, amene ndi zovuta kulamulira ndondomeko kupanga, ndipo amafuna mkulu ukhondo zida ndi chilengedwe kupanga.
Malinga ndi deta operekedwa ndi China ma cellulose Makampani Association, mphamvu okwana kupanga osakhala ionic mapadi efa opanga ndi mphamvu yaikulu zoweta kupanga, monga Hercules Temple, Shandong Heda, etc., kuposa 50% ya mphamvu okwana kupanga dziko. Palinso opanga ena ang'onoang'ono omwe si a ionic cellulose ether omwe amatha kupanga matani osakwana 4,000. Kupatula mabizinesi ochepa, ambiri a iwo amapanga wamba zomangira kalasi mapadi etha, ndi mphamvu okwana kupanga pafupifupi 100,000 matani pachaka. Chifukwa cha kusowa mphamvu zandalama, mabizinesi ang'onoang'ono ambiri amalephera kukwaniritsa miyezo yachitetezo cha chilengedwe pakuwongolera madzi komanso kutulutsa mpweya wotulutsa mpweya kuti achepetse ndalama zopangira. Pamene dziko ndi anthu onse akuyang'anitsitsa chitetezo cha chilengedwe, mabizinesi omwe ali m'makampani omwe sangathe kukwaniritsa zofunikira za chitetezo cha chilengedwe adzatseka pang'onopang'ono kapena kuchepetsa kupanga. Panthawiyo, kuchuluka kwa makampani opanga ma cellulose ether mdziko langa kudzawonjezeka.
Ndondomeko zapakhomo zoteteza zachilengedwe zikuchulukirachulukira, ndipo zofunikira zolimba zimayikidwa patsogolo paukadaulo woteteza chilengedwe komanso kuyika ndalama popangacellulose ether. Miyezo yapamwamba kwambiri yoteteza zachilengedwe imakulitsa mtengo wopangira mabizinesi ndikupanganso gawo lalikulu lachitetezo cha chilengedwe. Mabizinesi omwe sangathe kukwaniritsa zofunikira zachitetezo cha chilengedwe akhoza kutsekedwa pang'onopang'ono kapena kuchepetsa kupanga chifukwa cholephera kukwaniritsa miyezo yoteteza chilengedwe. Malinga ndi zomwe kampaniyo ikuyembekeza, mabizinesi omwe amachepetsa pang'onopang'ono kupanga ndikuyimitsa kupanga chifukwa chachitetezo cha chilengedwe atha kukhala ndi matani pafupifupi 30,000 / chaka chazinthu zomangira zamtundu wa cellulose ether, zomwe zimathandizira kukulitsa mabizinesi opindulitsa.
Malingana ndi ether ya cellulose, ikupitiriza kufalikira kuzinthu zamtengo wapatali komanso zamtengo wapatali
Nthawi yotumiza: Apr-25-2024