KeluloseʻO ia ka ʻāpana nui o nā paia o nā cell mea kanu, a ʻo ia ka polysaccharide i hoʻolaha nui ʻia a nui loa i ke ʻano, e helu ana ma mua o 50% o ka ʻike kalapona i loko o ke aupuni mea kanu. I waena o lākou, kokoke ka ʻike cellulose o ka pulupulu i ka 100%, ʻo ia ke kumu cellulose maoli maʻemaʻe loa. I ka lāʻau maʻamau, helu ka cellulose no 40-50%, a aia he 10-30% hemicellulose a me 20-30% lignin. ʻO Cellulose ether kahi huaʻōlelo maʻamau no nā ʻano derivatives i loaʻa mai ka cellulose kūlohelohe ma ke ʻano he mea maka ma o ka etherification. He huahana ia i hoʻokumu ʻia ma hope o ka hoʻololi hapa ʻia ʻana o nā hui hydroxyl ma nā macromolecules cellulose e nā hui ether. Aia nā pilina hydrogen intra-chain a me inter-chain i loko o nā macromolecules cellulose, he paʻakikī ke hoʻoheheʻe ʻia i ka wai a kokoke i nā mea hoʻoheheʻe organik āpau, 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 solubility.
Loaʻa i ka Cellulose ether ka inoa o ka "monosodium glutamate ʻoihana". Loaʻa iā ia nā waiwai maikaʻi loa e like me ka hoʻomānoanoa ʻana o ka hopena, ka solubility wai maikaʻi, ka hoʻokuʻu ʻana a i ʻole ke kūpaʻa latex, ka hana ʻana i ka kiʻiʻoniʻoni, ka paʻa ʻana o ka wai, a me ka hoʻopili ʻana. ʻAʻohe mea ʻawaʻawa a ʻono ʻole hoʻi, a hoʻohana nui ʻia i nā mea kūkulu hale, nā lāʻau lapaʻau, nā meaʻai, nā lole, nā kemika o kēlā me kēia lā, ka ʻimi ʻana i ka petroleum, ka mining, ka hana pepa, ka polymerization, ka aerospace a me nā ʻoihana ʻē aʻe he nui. Loaʻa i ka Cellulose ether nā pono o ka noi ākea, ka hoʻohana ʻana i nā ʻāpana liʻiliʻi, ka hopena hoʻololi maikaʻi, a me ke aloha kaiapuni. Hiki iā ia ke hoʻomaikaʻi nui a hoʻonui i ka hana huahana ma ke kahua o kona hoʻohui ʻana, kahi mea e kōkua ai i ka hoʻomaikaʻi ʻana i ka pono o ka hoʻohana ʻana i nā kumuwaiwai a me ka waiwai i hoʻohui ʻia o ka huahana. Nā mea hoʻohui aloha kaiapuni e pono ai i nā ʻano like ʻole.
Wahi a ka ionization o ka cellulose ether, ke ʻano o nā substituents a me ka ʻokoʻa o ka solubility, hiki ke hoʻokaʻawale ʻia ka cellulose ether i nā ʻāpana like ʻole. Wahi a nā ʻano like ʻole o nā substituents, hiki ke hoʻokaʻawale ʻia nā cellulose ethers i nā ethers hoʻokahi a me nā ethers hui pū ʻia. Wahi a ka solubility, hiki ke hoʻokaʻawale ʻia ka cellulose ether i nā huahana wai-soluble a me nā huahana wai-insoluble. Wahi a ka ionization, hiki ke hoʻokaʻawale ʻia i nā huahana ionic, non-ionic a me nā huahana hui pū ʻia. Ma waena o nā cellulose ethers wai-soluble, ʻoi aku ka maikaʻi o ke kūpaʻa ʻana o nā non-ionic cellulose ethers e like me HPMC i ka mahana a me ke kūpaʻa paʻakai ma mua o nā 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 ʻanuʻu ʻē aʻe. ʻO ke kaʻina hana o ka HPMC papa lāʻau lapaʻau a me ka HPMC papa meaʻai ua like like. Ke hoʻohālikelike ʻia me ka cellulose ether papa mea kūkulu hale, pono ke kaʻina hana o ka HPMC papa lāʻau lapaʻau a me ka HPMC papa meaʻai i ka etherification pae, he paʻakikī, paʻakikī ke kaohi i ke kaʻina hana, a koi i ka maʻemaʻe kiʻekiʻe o nā lako a me ke kaiapuni hana.
Wahi a ka ʻikepili i hāʻawi ʻia e ka Hui ʻOihana Cellulose Kina, ʻo ka nui o ka hiki ke hana o nā mea hana cellulose ether non-ionic me ka nui o ka hiki ke hana kūloko, e like me Hercules Temple, Shandong Heda, a pēlā aku, ua ʻoi aku ma mua o 50% o ka nui o ka hiki ke hana o ka ʻāina. Nui nā mea hana liʻiliʻi ʻē aʻe non-ionic cellulose ether me ka hiki ke hana ma lalo o 4,000 tons. Koe wale nō kekahi mau ʻoihana, ʻo ka hapa nui o lākou e hana i nā cellulose ethers papa hale maʻamau, me ka nui o ka hiki ke hana ma kahi o 100,000 tons i kēlā me kēia makahiki. Ma muli o ka nele o ka ikaika kālā, nui nā ʻoihana liʻiliʻi i hiki ʻole ke hoʻokō i nā kūlana i ka hoʻopukapuka kālā palekana kaiapuni i ka mālama ʻana i ka wai a me ka mālama ʻana i ke kinoea hoʻopau i mea e hōʻemi ai i nā kumukūʻai hana. I ka wā e uku nui ai ka ʻāina a me ke kaiāulu holoʻokoʻa i ka mālama ʻana i ke kaiapuni, ʻo kēlā mau ʻoihana i loko o ka ʻoihana i hiki ʻole ke hoʻokō i nā koi o ka palekana kaiapuni e pani mālie a hōʻemi paha i ka hana. I kēlā manawa, e hoʻonui hou ʻia ka nui o ka ʻoihana hana cellulose ether o koʻu ʻāina.
Ke lilo nei nā kulekele palekana kaiapuni kūloko i mea koʻikoʻi aʻe, a ua hoʻokumu ʻia nā koi koʻikoʻi no ka ʻenehana palekana kaiapuni a me ka hoʻopukapuka kālā ʻana i ke kaʻina hana oʻEtera celluloseʻO nā hana palekana kaiapuni kiʻekiʻe e hoʻonui i ke kumukūʻai hana o nā ʻoihana a hana pū kekahi i kahi paepae kiʻekiʻe no ka palekana kaiapuni. ʻO nā ʻoihana i hiki ʻole ke hoʻokō i nā koi palekana kaiapuni e pani mālie ʻia a hōʻemi paha i ka hana ʻana ma muli o ka hiki ʻole ke hoʻokō i nā kūlana palekana kaiapuni. 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 kaiapuni e pili ana paha i ka lako holoʻokoʻa o kahi 30,000 tons/makahiki o ka cellulose ether papa hale maʻamau, kahi mea e kōkua ai i ka hoʻonui ʻana o nā ʻoihana pono.
Ma muli o ka cellulose ether, ke hoʻomau nei ia i ka hoʻonui ʻana i nā huahana kiʻekiʻe a me nā huahana waiwai nui i hoʻohui ʻia
Ka manawa hoʻouna: ʻApelila-25-2024