He aha ka Cellulose Ether?

ʻEtera celluloseHe hui polymer me kahi ʻano ether i hana ʻia me ka cellulose. Loaʻa i kēlā me kēia apo glucosyl i loko o ka macromolecule cellulose ʻekolu mau hui hydroxyl, ʻo ka hui hydroxyl mua ma ka ʻātoma kalapona ʻeono, ʻo ka hui hydroxyl lua ma ka ʻātoma kalapona ʻelua a me ke kolu, a ua pani ʻia ka hydrogen i loko o ka hui hydroxyl e kahi hui hydrocarbon e hana i nā mea derivatives cellulose ether. He huahana ia kahi i pani ʻia ai ka hydrogen o ka hui hydroxyl i loko o ka polymer cellulose e kahi hui hydrocarbon. ʻO ka Cellulose kahi hui polymer polyhydroxy ʻaʻole e hoʻoheheʻe a hoʻoheheʻe paha. Ma hope o ka etherification, hiki ke hoʻoheheʻe ʻia ka cellulose i ka wai, hoʻoheheʻe ʻia ka hopena alkali a me ka mea hoʻoheheʻe organik, a he thermoplasticity.

He hui polyhydroxy polymer ka Cellulose ʻaʻole e hoʻoheheʻe a hoʻoheheʻe paha. Ma hope o ka etherification, hiki ke hoʻoheheʻe ʻia ka cellulose i ka wai, hoʻoheheʻe ʻia ka hopena alkali a me ka mea hoʻoheheʻe organik, a he thermoplasticity kona.

1. Kūlohelohe

ʻO ka solubility o ka cellulose ma hope o ka etherification e loli nui. Hiki ke hoʻoheheʻe ʻia i loko o ka wai, ka waikawa dilute, ka alkali dilute a i ʻole ka mea hoʻoheheʻe organik. ʻO ka solubility e pili nui ana i ʻekolu mau mea: (1) ʻO nā ʻano o nā hui i hoʻokomo ʻia i ke kaʻina hana etherification, ʻo ka mea i hoʻokomo ʻia ʻO ka nui o ka hui, ʻo ka haʻahaʻa o ka solubility, a ʻo ka ikaika o ka polarity o ka hui i hoʻokomo ʻia, ʻo ka maʻalahi o ka cellulose ether e hoʻoheheʻe i ka wai; (2) Ke kekelē o ka hoʻololi a me ka hoʻolaha ʻana o nā hui etherified i loko o ka macromolecule. ʻO ka hapa nui o nā cellulose ethers hiki ke hoʻoheheʻe ʻia i loko o ka wai ma lalo o kekahi kekelē o ka hoʻololi ʻana, a ʻo ke kekelē o ka hoʻololi ʻana ma waena o 0 a me 3; (3) ʻO ke kekelē o ka polymerization o ka cellulose ether, ʻo ke kiʻekiʻe o ke kekelē o ka polymerization, ʻo ka liʻiliʻi o ka soluble; ʻO ka haʻahaʻa o ke kekelē o ka hoʻololi ʻana i hiki ke hoʻoheheʻe ʻia i loko o ka wai, ʻo ka laulā o ka laulā. Nui nā ʻano cellulose ethers me ka hana maikaʻi loa, a hoʻohana nui ʻia lākou i ke kūkulu ʻana, ka sima, ka petroleum, ka meaʻai, ka lole, ka detergent, ka pena, ka lāʻau lapaʻau, ka hana pepa a me nā ʻāpana uila a me nā ʻoihana ʻē aʻe.

2. Hoʻomohala:

ʻO Kina ka mea hana nui loa a me ka mea kūʻai aku o ka cellulose ether ma ka honua, me ka awelika o ka ulu makahiki ma mua o 20%. Wahi a nā helu helu mua, aia ma kahi o 50 mau ʻoihana hana cellulose ether ma Kina, ua ʻoi aku ka nui o ka hana i hoʻolālā ʻia no ka ʻoihana cellulose ether ma mua o 400,000 tons, a aia ma kahi o 20 mau ʻoihana me ka ʻoi aku o 10,000 tons, i hoʻolaha nui ʻia ma Shandong, Hebei, Chongqing a me Jiangsu. , Zhejiang, Shanghai a me nā wahi ʻē aʻe.

3. Pono:

I ka makahiki 2011, ʻo ka hiki ke hana ʻana o CMC ma Kina ma kahi o 300,000 tons. Me ka piʻi ʻana o ke koi no nā ethers cellulose kiʻekiʻe ma nā ʻoihana e like me ka lāʻau lapaʻau, ka meaʻai, a me nā kemika o kēlā me kēia lā, ke piʻi nei ke koi kūloko no nā huahana cellulose ether ʻē aʻe ma mua o CMC. , ʻo ka hiki ke hana o MC/HPMC ma kahi o 120,000 tons, a ʻo ka HEC ma kahi o 20,000 tons. Aia nō ʻo PAC i ke kahua hoʻolaha a me ka noi ma Kina. Me ka hoʻomohala ʻana o nā kahua aila nui ma waho a me ka hoʻomohala ʻana o nā mea kūkulu hale, ka meaʻai, nā kemika a me nā ʻoihana ʻē aʻe, ke piʻi nei ka nui a me ke kahua o PAC i kēlā me kēia makahiki, me ka hiki ke hana ma mua o 10,000 tons.

4. Hoʻokaʻawale ʻana：

Wahi a ke ʻano kemika o nā mea pani, hiki ke hoʻokaʻawale ʻia i nā ʻether anionic, cationic a me nonionic. Ma muli o ka mea etherification i hoʻohana ʻia, aia nā methyl cellulose, hydroxyethyl methyl cellulose, carboxymethyl cellulose, ethyl cellulose, benzyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose cellulose, cyanoethyl cellulose, benzyl cyanoethyl cellulose, carboxymethyl hydroxyethyl cellulose a me phenyl cellulose, a pēlā aku. ʻOi aku ka pono o ka Methyl cellulose a me ka ethyl cellulose.

Methylcellulose

Ma hope o ka mālama ʻia ʻana o ka pulupulu i hoʻomaʻemaʻe ʻia me ka alkali, hana ʻia ka cellulose ether ma o kahi moʻo o nā hopena me ka methane chloride ma ke ʻano he mea etherification. Ma ke ʻano laulā, ʻo ke kekelē o ka pani ʻana he 1.6 ~ 2.0, a ʻokoʻa hoʻi ka solubility me nā kekelē like ʻole o ka pani ʻana. No ka cellulose ether non-ionic.

(1) Hiki ke hoʻoheheʻe ʻia ka Methylcellulose i ka wai anuanu, a he paʻakikī ke hoʻoheheʻe ʻia i ka wai wela. He paʻa loa kona hopena wai ma ka pae pH = 3 ~ 12. Loaʻa iā ia ka launa maikaʻi me ka starch, guar gum, a me nā mea ʻē aʻe a me nā surfactants he nui. Ke hiki ka mahana i ka mahana gelation, hana ʻia ka gelation.

(2) ʻO ka paʻa ʻana o ka wai o ka methyl cellulose e pili ana i ka nui o ka hoʻohui ʻana, ka mānoanoa, ka nui o ka ʻāpana a me ka wikiwiki o ka hoʻoheheʻe ʻana. Ma keʻano laulā, inā nui ka nui o ka hoʻohui ʻana, liʻiliʻi ka maikaʻi, a nui ka mānoanoa, kiʻekiʻe ka wikiwiki o ka paʻa ʻana o ka wai. I waena o lākou, ʻo ka nui o ka hoʻohui ka hopena nui loa i ka wikiwiki o ka paʻa ʻana o ka wai, a ʻaʻole kūlike pololei ka pae o ka mānoanoa i ka pae o ka paʻa ʻana o ka wai. ʻO ka wikiwiki o ka hoʻoheheʻe ʻana e pili nui ana i ke kiʻekiʻe o ka hoʻololi ʻana o ka ʻili o nā ʻāpana cellulose a me ka maikaʻi o ka ʻāpana. I waena o nā ethers cellulose i luna, ʻoi aku ka kiʻekiʻe o ka paʻa ʻana o ka wai o ka methyl cellulose a me ka hydroxypropyl methyl cellulose.

(3) Hiki i nā loli o ka mahana ke hoʻopilikia nui i ka paʻa ʻana o ka wai o ka methyl cellulose. Ma keʻano laulā, ʻo ke kiʻekiʻe o ka mahana, ʻoi aku ka ʻino o ka paʻa ʻana o ka wai. Inā ʻoi aku ka mahana o ka mortar ma mua o 40°C, e emi nui ana ka paʻa ʻana o ka wai o ka methyl cellulose, e hoʻopilikia nui ana i ke kūkulu ʻana o ka mortar.

(4)Methyl celluloseHe hopena koʻikoʻi ko ia i ka hana a me ke kuʻikahi o ka mortar. ʻO ke "pili" ma ʻaneʻi e pili ana i ka ikaika hoʻopaʻa i ʻike ʻia ma waena o ka mea hana a ka mea hana a me ka substrate paia, ʻo ia hoʻi, ke kūpaʻa ʻoki o ka mortar. Kiʻekiʻe ka hoʻopili ʻana, nui ke kūpaʻa ʻoki o ka mortar, a nui nō hoʻi ka ikaika e pono ai nā limahana i ke kaʻina hana o ka hoʻohana ʻana, a maikaʻi ʻole ka hana kūkulu ʻana o ka mortar. Aia ka pili o ka methyl cellulose ma kahi pae waena i nā huahana cellulose ether.

Hydroxypropylmethylcellulose:

ʻO ka Hydroxypropyl methylcellulose kahi ʻano cellulose nona ka hana a me ka hoʻohana ʻana e piʻi wikiwiki nei. He ʻenekini hui cellulose non-ionic i hana ʻia mai ka pulupulu i hoʻomaʻemaʻe ʻia ma hope o ka alkalization, me ka hoʻohana ʻana i ka propylene oxide a me ka methyl chloride ma ke ʻano he etherification agent, ma o kahi moʻo o nā hopena. ʻO ke kekelē o ka pani ʻana he 1.2 ~ 2.0. ʻOkoʻa kona mau waiwai ma muli o ka lakio o ka ʻike methoxyl i ka ʻike hydroxypropyl.

(1) He maʻalahi ka hoʻoheheʻe ʻana o ka Hydroxypropyl methylcellulose i ka wai anuanu, a e pilikia ana ia i ka hoʻoheheʻe ʻana i ka wai wela. Akā, ʻoi aku ka kiʻekiʻe o kona mahana gelation i ka wai wela ma mua o ka methyl cellulose. Ua hoʻomaikaʻi nui ʻia ka solubility i ka wai anuanu i hoʻohālikelike ʻia me ka methyl cellulose.

(2) Pili ka mānoanoa o ka hydroxypropyl methylcellulose i kona kaumaha molekala, a ʻo ka nui o ke kaumaha molekala, ʻo ke kiʻekiʻe o ka mānoanoa. Hoʻopilikia pū ka mahana i kona mānoanoa, i ka piʻi ʻana o ka mahana, e emi ana ka mānoanoa. Eia naʻe, ʻoi aku ka haʻahaʻa o ka mana o kona mānoanoa kiʻekiʻe a me ka mahana ma mua o ka methyl cellulose. Paʻa kona hopena ke mālama ʻia ma ka mahana o ka lumi.

(3) ʻO ka paʻa ʻana o ka wai o ka hydroxypropyl methylcellulose e pili ana i kona nui hoʻohui, ka viscosity, a me nā mea ʻē aʻe, a ʻo kona helu paʻa wai ma lalo o ka nui hoʻohui like ʻoi aku ke kiʻekiʻe ma mua o ka methyl cellulose.

(4)Hydroxypropyl methylcelluloseHe paʻa ia i ka waikawa a me ka alkali, a he paʻa loa kona hopena wai ma ka pae o ka pH = 2 ~ 12. ʻAʻole nui ka hopena o ka soda caustic a me ka wai lime i kāna hana, akā hiki i ka alkali ke hoʻolalelale i kona hoʻoheheʻe ʻia a hoʻonui iki i kona viscosity. He paʻa ka Hydroxypropyl methylcellulose i nā paʻakai maʻamau, akā i ka wā e kiʻekiʻe ai ka nui o ka hopena paʻakai, e piʻi aʻe ka viscosity o ka hopena hydroxypropyl methylcellulose.

(5) Hiki ke hoʻohuihui ʻia ka Hydroxypropyl methylcellulose me nā hui polymer wai-hoʻoheheʻe ʻia e hana i kahi hopena like a kiʻekiʻe aʻe. E like me ka polyvinyl alcohol, starch ether, vegetable gum, a pēlā aku.

(6) ʻOi aku ka maikaʻi o ke kūpaʻa ʻana o ka Hydroxypropyl methylcellulose i nā enzyme ma mua o ka methylcellulose, a ʻoi aku ka liʻiliʻi o ka hiki ke hoʻohaumia ʻia kāna hopena e nā enzymes ma mua o ka methylcellulose.

(7) ʻOi aku ke kiʻekiʻe o ka hoʻopili ʻana o ka hydroxypropyl methylcellulose i ke kūkulu ʻana o ka mortar ma mua o ka methylcellulose.

ʻO ka cellulose Hydroxyethyl：

Hana ʻia ia mai ka pulupulu i hoʻomaʻemaʻe ʻia i mālama ʻia me ka alkali, a hoʻopili ʻia me ka ethylene oxide ma ke ʻano he etherification agent i ke alo o isopropanol. ʻO kona kekelē o ka hoʻololi ʻana he 1.5 ~ 2.0. He hydrophilicity ikaika kona a maʻalahi hoʻi e omo i ka makū.

(1) Hiki ke hoʻoheheʻe ʻia ka Hydroxyethyl cellulose i ka wai anuanu, akā paʻakikī ke hoʻoheheʻe ʻia i ka wai wela. Paʻa kona hopena i ka mahana kiʻekiʻe me ka ʻole o ka gelling. Hiki ke hoʻohana ʻia no ka manawa lōʻihi ma lalo o ka mahana kiʻekiʻe i loko o ka mortar, akā ʻoi aku ka haʻahaʻa o kona paʻa ʻana i ka wai ma mua o ka methyl cellulose.

(2) Paʻa ka Hydroxyethyl cellulose i ka waikawa maʻamau a me ka alkali, a hiki i ka alkali ke hoʻolalelale i kona hoʻoheheʻe ʻana a hoʻonui iki i kona viscosity. ʻOi aku ka ʻino o kona dispersibility i ka wai ma mua o ka methyl cellulose a me ka hydroxypropyl methyl cellulose.

(3) Loaʻa i ka Hydroxyethyl cellulose ka hana anti-sag maikaʻi no ka mortar, akā he lōʻihi kona manawa hoʻopaneʻe no ka sima.

(4) ʻO ka hana o ka hydroxyethyl cellulose i hana ʻia e kekahi mau ʻoihana kūloko he haʻahaʻa loa ia ma mua o ka methyl cellulose ma muli o kona nui o ka wai a me ka nui o ka lehu.

(5) He koʻikoʻi ka ʻōpala o ka wai o ka hydroxyethyl cellulose. Ma kahi mahana o 40°C, hiki ke loaʻa ka ʻōpala i loko o 3 a 5 mau lā, kahi e hoʻopilikia ai i kāna hana.

ʻO ke karbokisametila kelulosa

Hana ʻia ka ʻenekini cellulose Lonic mai nā olonā kūlohelohe (pulupulu, a pēlā aku) ma hope o ka mālama ʻana i ka alkali, me ka hoʻohana ʻana i ka sodium monochloroacetate ma ke ʻano he mea etherification, a ke hana nei i kahi moʻo o nā mālama ʻana i ka hopena. ʻO ke kekelē o ka hoʻololi ʻana he 0.4 ~ 1.4, a ua hoʻopilikia nui ʻia kāna hana e ke kekelē o ka hoʻololi ʻana.

(1) ʻOi aku ka hygroscopic o ka Carboxymethyl cellulose, a e loaʻa iā ia ka wai hou aku ke mālama ʻia ma lalo o nā kūlana maʻamau.

(2) ʻAʻole hana ka wai hoʻoheheʻe wai Carboxymethyl cellulose i ka gel, a emi iho ka mānoanoa me ka piʻi ʻana o ka mahana. Ke ʻoi aku ka mahana ma mua o 50°C, ʻaʻole hiki ke hoʻihoʻi ʻia ka mānoanoa.

(3) Hoʻopilikia nui ʻia kona kūpaʻa e ka pH. Ma ke ʻano laulā, hiki ke hoʻohana ʻia i loko o ka mortar gypsum, akā ʻaʻole i loko o ka mortar sima. Ke alkaline loa, e nalowale ana ka mānoanoa.

(4) ʻOi aku ka haʻahaʻa o kona paʻa ʻana i ka wai ma mua o ka methyl cellulose. Loaʻa iā ia kahi hopena hoʻopaneʻe i ka mortar gypsum-based a hoʻemi i kona ikaika. Eia nō naʻe, ʻoi aku ka haʻahaʻa o ke kumukūʻai o ka carboxymethyl cellulose ma mua o ka methyl cellulose.

ʻO ka Cellulose Alkyl Ether:

ʻO nā mea i koho ʻia he methyl cellulose a me ethyl cellulose. I ka hana ʻoihana, hoʻohana nui ʻia ka methyl chloride a i ʻole ethyl chloride ma ke ʻano he etherification agent, a penei ka hopena:

Ma ke ʻano hana, hōʻike ʻo R iā CH3 a i ʻole C2H5. ʻAʻole wale ka hoʻopili ʻana o ka alkali i ke kiʻekiʻe o ka etherification, akā hoʻopilikia pū kekahi i ka hoʻohana ʻana o nā alkyl halides. ʻO ka haʻahaʻa o ka hoʻopili ʻana o ka alkali, ʻoi aku ka ikaika o ka hydrolysis o ka alkyl halide. I mea e hōʻemi ai i ka hoʻohana ʻana o ka etherifying agent, pono e hoʻonui ʻia ka hoʻopili ʻana o ka alkali. Eia naʻe, i ka wā e kiʻekiʻe loa ai ka hoʻopili ʻana o ka alkali, ua emi ka hopena pehu o ka cellulose, ʻaʻole ia e kūpono i ka hopena etherification, a no laila ua emi ke kiʻekiʻe o ka etherification. No kēia kumu, hiki ke hoʻohui ʻia ka lye i hoʻopaʻa ʻia a i ʻole ka lye paʻa i ka wā o ka hopena. Pono ka reactor i kahi mea hoʻoulu a haehae maikaʻi i hiki ke hoʻolaha like ʻia ka alkali. Hoʻohana nui ʻia ka Methyl cellulose ma ke ʻano he mea hoʻomānoanoa, mea hoʻopili a me ke colloid pale. Hiki ke hoʻohana ʻia ma ke ʻano he mea hoʻolaha no ka polymerization emulsion, kahi mea hoʻolaha hoʻopili no nā hua, kahi slurry textile, kahi mea hoʻohui no ka meaʻai a me nā mea hoʻonaninani, kahi mea hoʻopili lapaʻau, kahi mea uhi lāʻau, a hoʻohana ʻia i ka pena latex, ka ʻīnika paʻi, ka hana keramika, a hui pū ʻia i loko o ka sima. Hoʻohana ʻia e kāohi i ka manawa hoʻonohonoho a hoʻonui i ka ikaika mua, a pēlā aku. Loaʻa i nā huahana Ethyl cellulose ka ikaika mechanical kiʻekiʻe, ka maʻalahi, ke kūpaʻa wela a me ke kūpaʻa anu. Hiki ke hoʻoheheʻe ʻia ka ethyl cellulose haʻahaʻa i ka wai a me nā hopena alkaline dilute, a hiki ke hoʻoheheʻe ʻia nā huahana kiʻekiʻe i ka hapa nui o nā mea hoʻoheheʻe organik. Loaʻa iā ia ka hoʻohālikelike maikaʻi me nā resins a me nā plasticizers like ʻole. Hiki ke hoʻohana ʻia e hana i nā plastics, nā kiʻiʻoniʻoni, nā varnish, nā mea hoʻopili, ka latex a me nā mea uhi no nā lāʻau lapaʻau, a pēlā aku. ʻO ka hoʻokomo ʻana o nā hui hydroxyalkyl i loko o nā cellulose alkyl ethers hiki ke hoʻomaikaʻi i kona solubility, hoʻemi i kona ʻike i ka paʻakai ʻana, hoʻonui i ka mahana gelation a hoʻomaikaʻi i nā waiwai hoʻoheheʻe wela, a pēlā aku. ʻOkoʻa ke kekelē o ka loli i nā waiwai i luna me ke ʻano o nā substituents a me ka lakio o nā hui alkyl i hydroxyalkyl.

ʻO ka cellulose Hydroxyalkyl Ether:

ʻO nā mea i koho ʻia he hydroxyethyl cellulose a me hydroxypropyl cellulose. ʻO nā mea etherifying he epoxides e like me ka ethylene oxide a me ka propylene oxide. E hoʻohana i ka waikawa a i ʻole ke kumu ma ke ʻano he catalyst. ʻO ka hana ʻoihana e hoʻopili i ka cellulose alkali me ka mea etherification:hydroxyethyl celluloseme ka waiwai pani kiʻekiʻe e hoʻoheheʻe ʻia i ka wai anuanu a me ka wai wela. ʻO ka Hydroxypropyl cellulose me ka waiwai pani kiʻekiʻe e hoʻoheheʻe wale ʻia i ka wai anuanu akā ʻaʻole i ka wai wela. Hiki ke hoʻohana ʻia ka Hydroxyethyl cellulose ma ke ʻano he mea hoʻomānoanoa no nā uhi latex, ka paʻi lole a me nā mea hoʻoluʻu, nā mea ana pepa, nā mea hoʻopili a me nā colloids pale. ʻO ka hoʻohana ʻana o ka hydroxypropyl cellulose ua like ia me ka hydroxyethyl cellulose. Hiki ke hoʻohana ʻia ka Hydroxypropyl cellulose me ka waiwai pani haʻahaʻa ma ke ʻano he mea hoʻohui lāʻau lapaʻau, hiki ke loaʻa nā waiwai nakinaki a me nā waiwai hoʻoheheʻe.

ʻO ka Carboxymethyl cellulose, ka huaʻōlelo Pelekane CMC, ma ke ʻano maʻamau he paʻakai sodium. ʻO ka mea etherifying he monochloroacetic acid, a penei ka hopena:

ʻO Carboxymethyl cellulose ka cellulose ether wai-hoʻoheheʻe nui ʻia. I ka wā ma mua, ua hoʻohana nui ʻia ia e like me ka lepo wili, akā i kēia manawa ua hoʻonui ʻia e hoʻohana ʻia ma ke ʻano he mea hoʻohui o ka detergent, slurry lole, pena latex, uhi ʻana o ka pepa pepa a me ka pepa, a pēlā aku. Hiki ke hoʻohana ʻia ka carboxymethyl cellulose maʻemaʻe i ka meaʻai, nā lāʻau lapaʻau, nā mea hoʻonani, a me ke ʻano he mea hoʻopili no nā keramika a me nā ʻōmole.

ʻO ka Polyanionic cellulose (PAC) kahi ionic cellulose ether a he huahana pani kiʻekiʻe no ka carboxymethyl cellulose (CMC). He pauka keʻokeʻo, keʻokeʻo ʻole a melemele iki paha, ʻaʻohe ʻawaʻawa, ʻono ʻole, maʻalahi e hoʻoheheʻe ʻia i ka wai e hana i kahi hopena moakaka me kahi viscosity, ʻoi aku ka maikaʻi o ke kūpaʻa wela a me ke kūpaʻa paʻakai, a me nā waiwai antibacterial ikaika. ʻAʻohe mildew a me ka deterioration. Loaʻa iā ia nā ʻano o ka maʻemaʻe kiʻekiʻe, ke kiʻekiʻe o ka pani ʻana, a me ka hoʻolaha like ʻana o nā substituents. Hiki ke hoʻohana ʻia ma ke ʻano he mea hoʻopaʻa, mea hoʻomānoanoa, mea hoʻololi rheology, mea hoʻemi i ka pohō wai, mea hoʻopaʻa hoʻomaha, a pēlā aku. Hoʻohana nui ʻia ka Polyanionic cellulose (PAC) ma nā ʻoihana āpau kahi e hiki ai ke hoʻopili ʻia ʻo CMC, hiki ke hoʻemi nui i ka dosage, hoʻomaʻalahi i ka hoʻohana, hāʻawi i ke kūpaʻa maikaʻi a hoʻokō i nā koi hana kiʻekiʻe.

ʻO ka Cyanoethyl cellulose ka huahana hopena o ka cellulose a me ka acrylonitrile ma lalo o ke catalysis o ka alkali.

He kiʻekiʻe ke ʻano dielectric constant a me ka haʻahaʻa o ka coefficient pohō o ka cyanoethyl cellulose a hiki ke hoʻohana ʻia ma ke ʻano he matrix resin no nā kukui phosphor a me nā kukui electroluminescent. Hiki ke hoʻohana ʻia ka cyanoethyl cellulose i hoʻololi haʻahaʻa ʻia ma ke ʻano he pepa insulating no nā mea hoʻololi.

Ua hoʻomākaukau ʻia nā ethers waiʻona momona kiʻekiʻe, nā alkenyl ethers, a me nā ethers waiʻona ʻala o ka cellulose, akā ʻaʻole i hoʻohana ʻia i ka hana maoli.

Hiki ke hoʻokaʻawale ʻia nā ʻano hoʻomākaukau o ka cellulose ether i ke ʻano wai waena, ke ʻano hoʻoheheʻe, ke ʻano kāwili, ke ʻano slurry, ke ʻano kinoea-paʻa, ke ʻano pae wai a me ka hui pū ʻana o nā ʻano i luna.

5. Kumu hoʻomākaukau:

Hoʻomoʻa ʻia ka pulp α-cellulose kiʻekiʻe me ka hopena alkaline e pehu iā ia e luku i nā pilina hydrogen hou aʻe, e hoʻomaʻalahi i ka hoʻolaha ʻana o nā reagents a hana i ka cellulose alkali, a laila e hana me ka mea etherification e loaʻa ai ka cellulose ether. ʻO nā mea etherifying e komo pū me nā hydrocarbon halides (a i ʻole sulfates), epoxides, a me nā hui unsaturated α a me β me nā mea hoʻokipa electron.

6. Hana kumu:

He kuleana koʻikoʻi ko nā mea hoʻohuihui i ka hoʻomaikaʻi ʻana i ka hana o ke kūkulu ʻana i ka mortar maloʻo-huihui, a ʻoi aku ma mua o 40% o ke kumukūʻai o nā mea i loko o ka mortar maloʻo-huihui. ʻO kahi hapa nui o ka mea hoʻohuihui ma ka mākeke kūloko e hoʻolako ʻia e nā mea hana haole, a ʻo ka nui o ka huahana e hāʻawi ʻia e ka mea hoʻolako. ʻO ka hopena, ke kiʻekiʻe nei ke kumukūʻai o nā huahana mortar maloʻo-huihui, a he paʻakikī ke hoʻolaha i nā mortar masonry a me nā mortar plastering maʻamau me ka nui a me ka laulā. Hoʻomalu ʻia nā huahana mākeke kiʻekiʻe e nā ʻoihana haole, a he haʻahaʻa ka loaʻa kālā o nā mea hana mortar maloʻo-huihui a me ke kumukūʻai haʻahaʻa; ʻaʻohe noiʻi ʻōnaehana a kuhikuhi ʻia ka hoʻopili ʻana o nā mea hoʻohuihui, a hahai makapō i nā ʻano haole.

ʻO ka mea hoʻopaʻa wai kahi mea hoʻohui koʻikoʻi e hoʻomaikaʻi i ka hana paʻa wai o ka mortar maloʻo-i kāwili ʻia, a ʻo ia kekahi o nā mea hoʻohui koʻikoʻi e hoʻoholo ai i ke kumukūʻai o nā mea mortar maloʻo-i kāwili ʻia. ʻO ka hana nui o ka cellulose ether ka paʻa ʻana i ka wai.

ʻO ka Cellulose ether kahi huaʻōlelo maʻamau no kahi moʻo o nā huahana i hana ʻia e ka hopena o ka alkali cellulose a me ka etherifying agent ma lalo o kekahi mau kūlana. Hoʻololi ʻia ka alkali cellulose e nā ʻano etherifying like ʻole e loaʻa ai nā cellulose ethers like ʻole. Wahi a nā waiwai ionization o nā substituents, hiki ke hoʻokaʻawale ʻia nā cellulose ethers i ʻelua mau māhele: ionic (e like me ka carboxymethyl cellulose) a me nonionic (e like me ka methyl cellulose). Wahi a ke ʻano o ka substituent, hiki ke hoʻokaʻawale ʻia ka cellulose ether i monoether (e like me ka methyl cellulose) a me ka hui ʻana o ka ether (e like me ka hydroxypropyl methyl cellulose). Wahi a nā ʻano solubility like ʻole, hiki ke hoʻokaʻawale ʻia i ka solubility wai (e like me ka hydroxyethyl cellulose) a me ka solubility solvent organic (e like me ka ethyl cellulose). ʻO ka mortar maloʻo-hui ka cellulose hoʻoheheʻe ʻia i ka wai, a ua hoʻokaʻawale ʻia ka cellulose hoʻoheheʻe ʻia i ka wai i ke ʻano koke a me ke ʻano hoʻoheheʻe lohi i mālama ʻia ma luna.

ʻO ke ʻano hana o ka cellulose ether i loko o ka mortar penei:

(1) Ma hope o kaʻEtera celluloseI loko o ka mortar i hoʻoheheʻe ʻia i ka wai, ua hōʻoia ʻia ka hoʻolaha like ʻana o ka mea sima i loko o ka ʻōnaehana ma muli o ka hana o ka ʻili, a ʻo ka cellulose ether, ma ke ʻano he colloid pale, "ʻōwili" i nā ʻāpana paʻa a ua hana ʻia kahi papa o ka ʻili lubricating ma luna o kona ʻili waho, kahi e hoʻopaʻa ai i ka ʻōnaehana mortar, a hoʻomaikaʻi pū i ka wai o ka mortar i ka wā o ke kāwili ʻana a me ka maʻalahi o ke kūkulu ʻana.

(2) Ma muli o kona ʻano molekala ponoʻī, ʻaʻole maʻalahi ka nalowale ʻana o ka wai o ka mortar i loko o ka mortar, a hoʻokuʻu mālie iā ia i kahi manawa lōʻihi, e hāʻawi ana i ka mortar me ka paʻa wai maikaʻi a me ka hana.