CelluloseʻO ia ka mea nui o nā paia o nā mea kanu, a ʻo ia ka polysaccharide i hoʻolaha nui ʻia a nui loa ma ke ʻano, ʻoi aku ma mua o 50% o ke kalapona ma ke aupuni mea kanu. Ma waena o lākou, kokoke i ka 100% ka helu cellulose o ka pulupulu, ʻo ia ke kumu cellulose kūlohelohe maoli. I ka lāʻau maʻamau, helu ʻia ka cellulose no 40-50%, a aia he 10-30% hemicellulose a me 20-30% lignin. ʻO ka cellulose ether kahi huaʻōlelo maʻamau no nā ʻano derivatives i loaʻa mai ka cellulose maoli ma ke ʻano he mea maka ma o ka etherification. He huahana ia i hoʻokumu ʻia ma hope o nā pūʻulu hydroxyl ma nā macromolecules cellulose i hoʻololi ʻia e nā hui ether. Aia nā paʻa hydrogen intra-chain a inter-chain i loko o cellulose macromolecules, he mea paʻakikī ke hoʻoheheʻe i ka wai a kokoke i nā mea hoʻoheheʻe a pau, akā ma hope o ka etherification, hiki i ka hoʻokomo ʻana o nā hui ether ke hoʻomaikaʻi i ka hydrophilicity a hoʻonui nui i ka solubility i ka wai a me nā mea hoʻoheheʻe organik. Nā waiwai hoʻoheheʻe.
ʻO ka cellulose ether ka inoa o "monosodium glutamate industrial". Loaʻa iā ia nā waiwai maikaʻi e like me ka mānoanoa o ka hoʻonā, ka hoʻoheheʻe wai maikaʻi, ka hoʻokuʻu ʻana a i ʻole ke kūpaʻa latex, ka hana kiʻiʻoniʻoni, ka paʻa ʻana o ka wai, a me ka hoʻopili. ʻAʻole ia he mea ʻawaʻawa a me ka ʻono ʻole, a hoʻohana nui ʻia i nā mea kūkulu hale, lāʻau lapaʻau, meaʻai, textiles, nā kemika i kēlā me kēia lā, ʻimi ʻaila, mining, papermaking, polymerization, aerospace a me nā kula ʻē aʻe he nui. Loaʻa i ka cellulose ether nā mea maikaʻi o ka noi ākea, ka hoʻohana ʻana i nā ʻāpana liʻiliʻi, ka hopena hoʻololi maikaʻi, a me ka launa ʻana o ka nohona. Hiki iā ia ke hoʻomaikaʻi maikaʻi a hoʻonui i ka hana o ka huahana ma ke kahua o kāna hoʻohui ʻana, kahi kūpono i ka hoʻomaikaʻi ʻana i ka pono hoʻohana waiwai a me ka waiwai hoʻohui huahana. ʻO nā mea hoʻohui pili kaiapuni e pono ai i nā ʻano hana like ʻole.
Wahi a ka ionization o cellulose ether, ke ʻano o nā mea pani a me ka ʻokoʻa o ka solubility, hiki ke hoʻokaʻawale ʻia ka cellulose ether i nā ʻano like ʻole. E like me nā ʻano like ʻole o nā substituents, hiki ke hoʻokaʻawale ʻia nā cellulose ethers i nā ethers hoʻokahi a me nā ethers hui ʻia. Wahi a ka solubility, hiki ke hoʻokaʻawale ʻia ka cellulose ether i nā huahana wai a me nā huahana wai. Wahi a ka ionization, hiki ke hoʻokaʻawale ʻia i ka ionic, non-ionic a me nā huahana hui. Ma waena o ka wai-soluble cellulose ethers, non-ionic cellulose ethers e like me HPMC i ʻoi aku ka maikaʻi o ka pale ʻana i ka mahana a me ka paʻakai ma mua o ka ionic cellulose ethers (CMC).
Pehea e hoʻonui ai ka cellulose ether i ka ʻoihana?
Hana ʻia ka cellulose ether mai ka pulupulu i hoʻomaʻemaʻe ʻia ma o ka alkalization, etherification a me nā hana ʻē aʻe. ʻO ke kaʻina hana o ka lāʻau lapaʻau HPMC a me ka papa ʻai HPMC he mea like ia. Ke hoʻohālikelike ʻia me ke kūkulu ʻana i ka cellulose ether, ʻo ke kaʻina hana o ka lāʻau lapaʻau-grade HPMC a me ka meaʻai-grade HPMC e koi i ka etherification paena, he paʻakikī, paʻakikī ke hoʻomalu i ke kaʻina hana, a koi i ka maʻemaʻe kiʻekiʻe o nā mea hana a me ke kaiapuni hana.
Wahi a ka ʻikepili i hāʻawi ʻia e ka China Cellulose Industry Association, ʻoi aku ka nui o ka mana o nā mea hana non-ionic cellulose ether me ka nui o ka hana home, e like me Hercules Temple, Shandong Heda, etc. Nui nā mea hana liʻiliʻi liʻiliʻi non-ionic cellulose ether me ka mana hana ma lalo o 4,000 tons. Ma waho aʻe o nā ʻoihana liʻiliʻi, ʻo ka hapa nui o lākou e hana i nā mea hale maʻamau cellulose ethers, me ka nui o ka mana hana ma kahi o 100,000 tons i kēlā me kēia makahiki. Ma muli o ka nele o ka ikaika kālā, nui ʻole nā ʻoihana liʻiliʻi e hoʻokō i nā kūlana i ka hoʻopukapuka mālama kaiapuni i ka mālama ʻana i ka wai a me ka mālama kinoea hoʻopau i mea e hōʻemi ai i nā kumukūʻai hana. Ke nānā nui nei ka ʻāina a me ke kaiāulu holoʻokoʻa i ka mālama ʻana i ke kaiapuni, ʻo kēlā mau ʻoihana i ka ʻoihana ʻaʻole hiki ke hoʻokō i nā koi o ka mālama ʻana i ke kaiapuni e pani mālie a hōʻemi paha i ka hana. I kēlā manawa, e hoʻonui hou ʻia ka manaʻo o ka ʻoihana hana cellulose ether o koʻu ʻāina.
Ke piʻi nui nei nā kulekele mālama kaiapuni kūloko, a ua kau ʻia nā koi koʻikoʻi no ka ʻenehana palekana kaiapuni a me ka hoʻopukapuka ʻana i ke kaʻina hana.cellulose etera. Hoʻonui ʻia nā hana palekana kūlohelohe kiʻekiʻe i ke kumukūʻai hana o nā ʻoihana a hana pū kekahi i kahi paepae kiʻekiʻe no ka pale ʻana i ke kaiapuni. ʻO nā ʻoihana ʻaʻole hiki ke hoʻokō i nā koi palekana kaiapuni e pani ʻia a hōʻemi paha i ka hana ma muli o ka hiki ʻole ke hoʻokō i nā kūlana palekana. Wahi a ka prospectus o ka hui, ʻo nā ʻoihana e hōʻemi mālie i ka hana ʻana a hoʻōki i ka hana ʻana ma muli o nā kumu palekana o ke kaiapuni e pili ana i ka nui o ka lako ma kahi o 30,000 tons / makahiki o ka cellulose ether mea hale maʻamau, e kūpono ana i ka hoʻonui ʻana i nā ʻoihana maikaʻi.
Ma muli o ka cellulose ether, hoʻomau ia i ka hoʻonui ʻana i nā huahana kiʻekiʻe a me nā waiwai kiʻekiʻe
Ka manawa hoʻouna: Apr-25-2024