He aha ka palapala noi Cellulose Ether?

Hoʻokomo ia i ka hoʻomākaukau cellulose ether, cellulose ether hana ahoʻohana i ka cellulose ether, ʻoi aku ka hoʻohana ʻana i nā uhi.
Hua'ōlelo nui: cellulose ether, hana, noi
ʻO ka cellulose kahi hui macromolecular kūlohelohe. ʻO kona ʻano kemika he macromolecule polysaccharide me ka β-glucose anhydrous ma ke apo kumu. Hoʻokahi pūʻulu hydroxyl mua a ʻelua pūʻulu hydroxyl lua ma kēlā me kēia apo kumu. Ma o kāna hoʻololi kemika, hiki ke loaʻa ke ʻano o nā derivatives cellulose, a ʻo ka cellulose ether kekahi o lākou. Hoʻohana nui ʻia nā cellulose ethers i nā ʻoihana he nui.

1. Hoʻomākaukau

Loaʻa ka cellulose ether ma ka hoʻopili ʻana i ka cellulose me NaOH, a laila e hana me nā monomers hana like ʻole e like me ka monochloromethane, ethylene oxide, propylene oxide, etc., a me ka holoi ʻana i ka paʻakai ma ka huahana a me ka sodium cellulose.

2.Hana

2.1 Nānā: He keʻokeʻo a he keʻokeʻo waiu paha ka cellulose, ʻaʻohe mea ʻawaʻawa, pauka fibrous me ka wai, maʻalahi ke komo i ka wai, a hoʻoheheʻe ʻia i loko o kahi colloid kūpaʻa viscous i loko o ka wai.
2.2 Ionicity: MC, MHEC, MHPC, HEC he nonionic; NaCMC, NaCMHEC nā anionic.
2.3 Etherification: ʻO nā hiʻohiʻona a me ke kiʻekiʻe o ka etherification o ka etherification e pili i ka hana o ka cellulose ether i ka wā etherification, e like me ka solubility, ka hiki ke hana kiʻiʻoniʻoni, ka ikaika paʻa a me ka paʻakai paʻakai.
2.4 Solubility: (1) Hiki ke hoʻoheheʻe ʻia ka MC i ka wai anuanu, ʻaʻole hiki ke hoʻoheheʻe ʻia i ka wai wela, a hiki ke hoʻoheheʻe ʻia i kekahi mau mea hoʻoheheʻe; Hiki ke hoʻoheheʻe ʻia ka MHEC i ka wai anuanu, ʻaʻole hiki ke hoʻoheheʻe ʻia i ka wai wela a me nā mea hoʻoheheʻe organik. Eia nō naʻe, ke hoʻomehana ʻia ka hoʻonā wai o MC a me MHEC, e kahe ka MC a me MHEC. MC precipitates ma 45-60°C, oiai ke ea wela o ka hui etherified MHEC piʻi i 65-80°C. Ke hoʻohaʻahaʻa ʻia ka mahana, hoʻoheheʻe hou ka ea. (2) HEC, NaCMC, a me NaCMHEC hiki ke hoʻoheheʻe ʻia i ka wai ma kēlā me kēia mahana, akā hiki ʻole ke hoʻoheheʻe ʻia i loko o nā mea hoʻoheheʻe organik (me kekahi mau ʻokoʻa).
2.5 Hoʻopaneʻe ʻia ka pehu: He ʻōhū lohi ka cellulose ether i ka wai pH neutral, akā hiki iā ia ke lanakila i kēia pehu lohi i ka wai pH alkaline.
2.6 Viscosity: Hoʻoheheʻe ʻia ka cellulose ether i ka wai ma ke ʻano o ka colloid, a ʻo kona viscosity e pili ana i ka degere o ka polymerization o cellulose ether. Loaʻa i ka hopena nā macromolecules hydrated. Ma muli o ka hoʻopili ʻia ʻana o nā macromolecules, ʻokoʻa ke ʻano o ka hoʻoheheʻe ʻana i ka wai o Newtonian, akā e hōʻike ana i kahi ʻano e loli me ka ikaika shear. Ma muli o ke ʻano macromolecular o cellulose ether, piʻi wikiwiki ka viscosity o ka hopena me ka piʻi ʻana o ka noʻonoʻo a hoʻemi wikiwiki me ka piʻi ʻana o ka mahana.
2.7 Paʻa olaola: Hoʻohana ʻia ka cellulose ether i ka pae wai. I ka wā e loaʻa ai ka wai, e ulu ka bacteria. ʻO ka ulu ʻana o ka bacteria e alakaʻi i ka hana ʻana o ka bacteria enzyme. Hoʻopau ka enzyme i nā mea hoʻopaʻa ʻāpana anhydroglucose i hoʻololi ʻole ʻia e pili ana i ka cellulose ether, e hōʻemi ana i ke kaumaha molekala o ka polymer. No laila, inā e mālama ʻia ka cellulose ether aqueous solution no ka manawa lōʻihi, pono e hoʻohui ʻia kahi preservative iā ia. He ʻoiaʻiʻo kēia me nā antimicrobial cellulose ethers.

3. Ke kumu

3.1 Oilfield: Hoʻohana nui ʻia ʻo NaCMC i ka hoʻohana ʻana i ka ʻaila, a hoʻohana ʻia ia i ka hana ʻana i ka lepo e hoʻonui i ka viscosity a hoʻemi i ka nalowale o ka wai. Hiki iā ia ke pale i nā ʻino paʻakai hiki ke hoʻoheheʻe ʻia a hoʻomaikaʻi hou i ka ʻaila. ʻO ka sodium carboxymethyl hydroxypropyl cellulose a me ka sodium carboxymethyl hydroxyethyl cellulose he mau mea hoʻomaʻamaʻa lepo lepo maikaʻi a me nā mea hana no ka hoʻomākaukau ʻana i nā wai hoʻopau, me ka nui o ka pulping kiʻekiʻe, ka paʻakai maikaʻi a me ke kūpaʻa calcium, Loaʻa iā ia ka hiki ke hoʻonui i ka viscosity a me ka pale wela (160 ° C). He kūpono ia no ka hoʻomākaukau ʻana i nā wai hoʻopau o ka wai hou, ka wai kai a me ka wai paʻakai. Hiki ke hana ʻia i loko o nā wai hoʻopiha o nā ʻano like ʻole (1.03-1.279/Cm3) ma lalo o ke kaumaha o ka calcium chloride, a he ʻano viscosity kona. A ʻoi aku ka maikaʻi o ka emi ʻana o ka wai, ʻoi aku ka maikaʻi ma mua o ka hydroxyethyl cellulose, he mea hoʻohui maikaʻi ia no ka hoʻonui ʻana i ka ʻaila.
3.2 Ke kūkulu ʻana i nā seramika: Hiki ke hoʻohana ʻia ka NaCMC ma ke ʻano he retarder, ka mea mālama wai, ka mānoanoa a me ka mea hoʻopaʻa, i ʻike maikaʻi ʻia nā huahana seramika i hana ʻia a ʻaʻohe kīnā a me nā ʻōpū.
3.3 Pepa: Hoʻohana ʻia ʻo NaCMC no ka nui o loko a me waho a me ka hoʻopiha ʻana a me ka mālama ʻana i ka ʻili pepa, a hiki ke hoʻololi i ka casein, i hiki ke komo maʻalahi ka ʻīnika paʻi a maopopo nā ʻaoʻao. I ka hana ʻana i ka pepa kiʻi kiʻi, hiki ke hoʻohana ʻia e like me ka dispersant pigment, tackifier, stabilizer a me ka sizing agent.
3.4 Textile: Hoʻohana ʻia ʻo NaCMC ma ke ʻano he mea pani no ka palaoa a me ka nui ʻana i ka ʻoihana textile, a ʻaʻole maʻalahi ke hoʻopōʻino a lilo i poʻo. I ka paʻi ʻana a me ke kala ʻana, ʻaʻohe pono e desizing, a hiki i ka wai ke loaʻa i kahi colloid like ʻole i ka wai, e hoʻonui ai i ka hydrophilicity a me ke komo ʻana o ka wai. I ka manawa like, ma muli o ka liʻiliʻi liʻiliʻi o ka viscosity, maʻalahi ke hoʻoponopono i ka ʻokoʻa kala. Hoʻohana ʻia ʻo CMHEC ma ke ʻano he mānoanoa no ka paʻi ʻana a me ke kala ʻana i ka pulp, me ke koena liʻiliʻi a me nā hua kala kiʻekiʻe, a ʻoi aku ka kiʻekiʻe o ka paʻi ʻana a me ke kala ʻana ma mua o kāna huahana cellulose ether ionic a me non-ionic.
3.5 Paka: Hoʻohana ʻia ka NaCMC no ka hoʻopaʻa ʻana i ka paka. E hoʻoheheʻe koke ʻia a loaʻa ka ikaika hoʻopaʻa paʻa, he mea pono e hoʻomaikaʻi i ka maikaʻi o ka paka a hoʻemi i nā kumukūʻai.
3.6 Mea hoʻonani: NaCMC pāʻani i ke kuleana o ka hoʻopuehu, hoʻokuʻu a me ka hoʻopaʻa ʻana i nā huahana paʻi o nā mea silty paʻa paʻa, a pāʻani i ke ʻano o ka mānoanoa, hoʻopuehu a homogenizing i ka wai a i ʻole emulsion cosmetics. Hiki ke hoʻohana ʻia ma ke ʻano he emulsifier, thickener a stabilizer no ka ʻaila a me ka shampoo.
3.7 Bateri: He kiʻekiʻe ka maʻemaʻe o ka NaCMC, ka waikawa maikaʻi a me ka paʻakai paʻakai, ʻoi aku ka haʻahaʻa haʻahaʻa a me nā mea metala kaumaha, a paʻa loa ka colloid, kūpono no nā pā alkaline a me nā pihi zinc-manganese.
3.8 Nā pena kiʻi wai: Hiki ke hoʻohana ʻia ʻo HEC a me MHEC ma ke ʻano he stabilizer, mānoanoa a me nā mea mālama wai no nā pena latex. Eia kekahi, hiki ke hoʻohana ʻia e like me nā dispersants, tackifiers a me nā mea hana kiʻiʻoniʻoni no nā pena sima kala.
3.9 Nā mea kūkulu hale: hiki ke hoʻohana ʻia e like me ka dispersant, ka mea mālama wai a me ka mānoanoa no ka plaster a me ka mortar o ka papa lalo gypsum a me ka papa lalo sima, a me nā mea plastering lepo.
3.10 Glaze: Hiki ke hoʻohana ʻia e like me ka hoʻopili o ka glaze.
3.11 Detergent: Hiki ke hoʻohana ʻia ma ke ʻano he anti-adhesion agent no ka lepo mānoanoa.
3.12 Emulsion dispersion: hiki ke hoʻohana ʻia e like me ka stabilizer a me ka mānoanoa.
3.13 Pahu niho: Hiki ke hoʻohana ʻia ka NaCMHPC ma ke ʻano he stabilizer no nā mea hoʻopili niho niho. Loaʻa iā ia nā waiwai thixotropic maikaʻi, e hoʻomaikaʻi maikaʻi i ka toothpaste i ke ʻano, lōʻihi me ka ʻole o ka deformation, a he ʻano like a me ka ʻono. ʻOi aku ka maikaʻi o ka paʻakai a me ka pale ʻana o ka waika NaCMHPC, a ʻoi aku ka maikaʻi o kona hopena ma mua o ka CMC.

4. Hoʻohana i nā uhi a me nā paʻi

He kuleana koʻikoʻi loa ka cellulose ether i nā uhi a me nā paʻi. E hoʻohui wale i ka nui o ka helu O. 2% a hiki i ka 0.5% hiki ke mānoanoa, mālama i ka wai, pale i nā puaʻa a me nā mea hoʻopihapiha mai ka noho ʻana, a hoʻonui i ka pili a me ka ikaika paʻa.
4.1 Viscosity: Hoʻololi ka viscosity o cellulose ether aqueous solution me ka ikaika shear, a ʻo ka pena a me ka paʻi mānoanoa me ka cellulose ether kekahi i kēia ʻano. No ka maʻalahi o ka hoʻohana ʻana i ka uhi, pono e koho pono ʻia ke ʻano a me ka nui o ka cellulose ether. No nā uhi, i ka wā e hoʻohana ai i ka cellulose ether, hiki ke koho ʻia nā huahana viscosity medium.
4.2 Ka paʻa ʻana o ka wai: Hiki i ka cellulose ether ke pale i ka makū mai ke komo koke ʻana i ka substrate porous, i hiki ke hana i kahi uhi ʻaʻahu i ka wā o ke kaʻina hana holoʻokoʻa me ka hoʻomaloʻo ʻole. Ke kiʻekiʻe ka ʻike o ka emulsion, hiki ke hoʻokō ʻia ke koi o ka mālama ʻana i ka wai ma ka hoʻohana ʻana i ka cellulose ether liʻiliʻi. ʻO ka paʻa ʻana o ka wai o nā pena a me nā slurries e pili ana i ka neʻe ʻana o ka cellulose ether a me ka mahana o ka substrate i uhi ʻia.
4.3 ʻO nā puaʻa paʻa a me nā mea hoʻopiha: ʻO nā puaʻa a me nā mea hoʻopihapiha e hoʻoheheʻe ʻia. No ka mālama ʻana i ka ʻaʻahu pena a paʻa, pono e hoʻokuʻu ʻia nā mea hoʻopiha puaʻa. ʻO ka hoʻohana ʻana i ka cellulose ether hiki ke hoʻolilo i ka pena i kahi viscosity, a ʻaʻohe ua e hiki mai i ka wā mālama.
4.4 Adhesion a hoʻopaʻa ikaika: Ma muli o ka paʻa ʻana o ka wai maikaʻi a me ka hoʻopili ʻana o ka cellulose ether, hiki ke hōʻoia ʻia ka hoʻopili maikaʻi ʻana ma waena o ka uhi a me ka substrate. ʻO MHEC a me NaCMC kahi maloʻo maloʻo maikaʻi loa a me ka hoʻopili ʻana, no laila ua kūpono loa lākou no ka pulp pepa, ʻoiai ʻaʻole kūpono ʻo HEC no kēia kumu.
4.5 Ka hana colloid pale: Ma muli o ka hydrophilicity o cellulose ether, hiki ke hoʻohana ʻia i colloid pale no nā uhi.
4.6 Thickener: Hoʻohana nui ʻia ka cellulose ether i ka pena latex ma ke ʻano he mānoanoa e hoʻoponopono i ka viscosity kūkulu. Hoʻohana nui ʻia ka viscosity hydroxyethyl cellulose a me ka methyl hydroxyethyl cellulose i nā pena emulsion. I kekahi manawa hiki ke hoʻohana pū ʻia ka cellulose ether me nā mānoanoa synthetic (e like me ka polyacrylate, polyurethane, a me nā mea ʻē aʻe) e hoʻomaikaʻi i kekahi mau waiwai o ka pena latex a hāʻawi i ka paʻa paʻa o ka pena latex.
Loaʻa i nā cellulose ethers ka paʻa wai maikaʻi a me nā waiwai mānoanoa, akā ʻokoʻa kekahi mau waiwai. Anionic cellulose ether, maʻalahi e hana i nā paʻakai hiki ʻole i ka wai me nā cations divalent a me trivalent. No laila, ke hoʻohālikelike ʻia me ka methyl hydroxyethyl cellulose a me ka fiber hydroxyethyl, ʻo ka sodium carboxymethyl cellulose ka maikaʻi ʻole o ka pale scrub. No laila hiki ke hoʻohana wale ʻia ka sodium carboxymethyl cellulose i loko o nā ʻano pena latex maʻalahi.
ʻO ka methyl hydroxyethyl cellulose a me ka methyl hydroxypropyl cellulose he haʻahaʻa ka viscosity shear a ʻoi aku ka kiʻekiʻe o nā waiwai surfactant ma mua o ka hydroxyethyl cellulose, no laila e hōʻemi ana i ka manaʻo o nā pena latex e paʻi. A ʻaʻohe hopena surfactant o ka carboxymethyl cellulose.
Loaʻa i ka Hydroxyethyl cellulose nā hiʻohiʻona o ka wai maikaʻi, haʻahaʻa haʻahaʻa ka pale ʻana a me ka hana maʻalahi i ka pena latex. Ke hoʻohālikelike ʻia me ka methyl hydroxyethyl a me ka methyl hydroxypropyl cellulose, ʻoi aku ka maikaʻi o ka hoʻohālikelike ʻana me nā puaʻa, no laila ua ʻōlelo ʻia no ka pena latex silk, pena latex kala, paʻi kala, etc.