ʻO ka Hydroxyethyl Cellulose (HEC) he mea koʻikoʻi ka wai-soluble nonionic cellulose ether, ka mea i hoʻohana nui ʻia i loko o nā hale kūkulu hale, ʻoi aku ka nui o nā pena latex. Ma ke ʻano he mānoanoa maikaʻi, colloid pale, mea hoʻokuʻu a me ke kōkua hana kiʻiʻoniʻoni, hoʻomaikaʻi nui ia i ka hana o ka pena latex, hoʻonui i nā ʻano hana o ka pena a me ka hopena ʻike o ka huahana i hoʻopau ʻia.
1. ʻO ke kinona a me nā waiwai o ka hydroxyethyl cellulose
ʻO ka hydroxyethyl cellulose kahi mea hoʻopuka cellulose i hana ʻia e ka hoʻokomo ʻana i kahi hui hydroxyethyl i loko o ka molekole cellulose. He hui polymer hiki ke hoʻoheheʻe ʻia i ka wai. Hoʻoholo kona ʻano kemika i kona hiki ke hoʻoheheʻe ʻia i ka wai a me nā waiwai mānoanoa. Ke hoʻoheheʻe ʻia i loko o ka wai, hiki iā ia ke hana i kahi hopena viscous me ka hoʻopili maikaʻi ʻana, ka hana kiʻiʻoniʻoni a me nā hopena mānoanoa. He mea nui kēia mau waiwai i ka pena latex.
ʻO ka hydroxyethyl cellulose ka mea maʻamau ke keʻokeʻo a i ʻole ka pauka melemele māmā a i ʻole granules, hiki ke hoʻoheheʻe ʻia i loko o ke anuanu a i ʻole ka wai wela e hana i kahi hopena colloidal paʻa. He kūpaʻa kiʻekiʻe kona hopena a hiki ke pale pono i ka waika, alkali, redox a me ka microbial degradation. Eia kekahi, ma muli o ke ʻano non-ionic o ka hydroxyethyl cellulose, ʻaʻole ia e hana kemika me nā mea ʻē aʻe i loko o nā pena latex e like me nā puaʻa, nā mea hoʻopihapiha a i ʻole nā mea hoʻohui, no laila, loaʻa iā ia ka laulima ākea i nā ʻano pena latex.
2. Ka hana o ka hydroxyethyl cellulose i loko o ka pena latex
I ka pena latex, ʻike nui ʻia ka hana o ka hydroxyethyl cellulose i ka mānoanoa, ka paʻa ʻana o ka wai, hoʻonui i ka paʻa a me ka hoʻomaikaʻi ʻana i ka hana.
Ka hopena mānoanoa: Hydroxyethyl cellulose, ma ke ʻano he mānoanoa kūpono, hiki ke hoʻonui i ka viscosity o ka pena latex a hoʻonui i kāna thixotropy. ʻAʻole wale kēia e pale pono i ka pena mai ka hāʻule ʻana i ka wā o ka waiho ʻana a me ka hoʻohana ʻana, akā e hoʻonui i ka pena i ka wā i ʻōwili ʻia a palaki ʻia. ʻO ka hopena mānoanoa kūpono e kōkua i ka mālama ʻana i ka rheology o ka pena latex, e hōʻoia i ka manaʻo maikaʻi i ka wā e noi ai, a hoʻomaikaʻi i ka uhi kiʻiʻoniʻoni.
Paʻa wai: ʻO ka hydroxyethyl cellulose ka paʻa wai maikaʻi. I ka wā o ka hoʻomaloʻo ʻana o ka pena latex, hiki iā ia ke pale i ka wai mai ka evaporating wikiwiki loa, a laila e hoʻolōʻihi i ka manawa wehe ʻana o ka ʻaoʻao o ka pena a hōʻoia i ka hana ʻana. Eia kekahi, hiki i ka paʻa wai maikaʻi ke hoʻemi i ka haki ʻana o ke kiʻi uhi ma hope o ka maloʻo ʻana, a laila e hoʻomaikaʻi ai i ka maikaʻi holoʻokoʻa o ke kiʻi uhi.
Paʻa: Hydroxyethyl cellulose, ma ke ʻano he colloid pale, hiki ke pale pono i nā puaʻa a me nā mea hoʻopihapiha mai ka hoʻopaʻa ʻana i ka pena latex. Hiki iā ia ke hana i kahi ʻōnaehana colloidal paʻa ma o kāna solution viscous e puʻunaue like i kēlā me kēia ʻāpana a hōʻoia i ka paʻa o ka waiho ʻana o ka pena. I ka manawa like, hiki i ka hydroxyethyl cellulose ke hoʻomaikaʻi i ka paʻa o nā ʻāpana emulsion a pale i ka delamination a me ka agglomeration o ka ʻōnaehana latex i ka wā mālama.
ʻO ke kūkulu ʻana: I ka wā o ke kaʻina hana, ʻo ka mānoanoa a me ka lubricating hopena o ka hydroxyethyl cellulose e hana i ka pena latex i ka uhi maikaʻi a me nā waiwai pae, hiki ke hōʻemi maikaʻi i nā hōʻailona brush a hoʻomaikaʻi i ka maʻalahi o ke kiʻi uhi. Eia kekahi, no ka mea hiki i ka hydroxyethyl cellulose ke hoʻomaikaʻi i ka thixotropy o ka pena, ua maʻalahi ka hana ʻana o ka peʻa latex i ka wā o ke kaʻina pena, loaʻa ka wai maikaʻi me ka ʻole o ka kulu ʻana, a kūpono ia no nā ʻano hana like ʻole, e like me ka palaki ʻana, ka uhi ʻana a me ka pīpī. .
3. Nā hopena hoʻohana kikoʻī o ka hydroxyethyl cellulose i ka pena latex
E hoʻomaikaʻi i ka paʻa o ka waiho ʻana o ka pena: ʻO ka hoʻohui ʻana i ka nui kūpono o ka hydroxyethyl cellulose i ke kumu pena latex hiki ke hoʻoikaika nui i nā waiwai anti-settling o ka pena a pale i ka waiho ʻana o nā puaʻa a me nā mea hoʻopiha. ʻO ka hoʻopuehu ʻana o ka hydroxyethyl cellulose i loko o nā uhi hiki ke mālama i ka kūlike o ka ʻōnaehana pale a hoʻonui i ka manawa mālama o ka huahana.
E hoʻomaikaʻi i nā waiwai rheological o nā uhi: He mea koʻikoʻi nā waiwai rheological o nā pena latex i ka maikaʻi o ke kūkulu ʻana. Hiki i ka Hydroxyethyl cellulose ke hoʻohana i kāna thixotropy kūʻokoʻa e hoʻokahe maʻalahi i ka pena ma lalo o ka ikaika ʻoki kiʻekiʻe (e like me ke pena ʻana), a mālama i ka viscosity kiʻekiʻe ma lalo o ka ikaika ʻoki haʻahaʻa (e like me ke kū ʻana), e pale ana iā Sag. ʻOi aku ka maikaʻi o ke kūkulu ʻana a me ka hopena o ka uhi ʻana i kēia hiʻohiʻona, e hōʻemi ana i ka sagging a me ka ʻōwili ʻana.
E hoʻomaikaʻi i ka hopena ʻike a me nā waiwai kino o ke kiʻi uhi: He kuleana koʻikoʻi ka Hydroxyethyl cellulose i ke kaʻina hana kiʻiʻoniʻoni. ʻAʻole hiki iā ia ke hoʻomaikaʻi wale i ka maʻalahi o ka kiʻi pena, akā e hoʻonui i ka pale ʻana i ka ʻaʻahu a me ka pale wai o ka kiʻi pena, e hoʻonui i ke ola lawelawe o ka kiʻi pena. Eia kekahi, ma muli o ka paʻa ʻana o ka wai maikaʻi, maloʻo ka uhi ʻana, e kōkua ana i ka pale ʻana i nā pilikia e like me nā wrinkles, pinholes a me ka ʻūhā, e hoʻomaʻamaʻa i ka ʻili o ka uhi.
Hoʻomaikaʻi ʻia ka hana kaiapuni: ʻO ka hydroxyethyl cellulose kahi derivative o ka cellulose kūlohelohe, he biodegradability maikaʻi loa, ʻaʻole ia e hoʻohaumia i ke kaiapuni. Ke hoʻohālikelike ʻia me nā mānoanoa synthetic maʻamau, ʻoi aku ka maikaʻi o ke kaiapuni a hoʻokō i nā koi o nā mea kūkulu hale ʻōmaʻomaʻo hou. Eia kekahi, ʻaʻole i loaʻa i nā pūhui organik volatile (VOC), no laila, ʻo ka hoʻohana ʻana i ka hydroxyethyl cellulose i loko o ka pena latex e kōkua i ka hōʻemi ʻana i nā hoʻokuʻu VOC a hoʻomaikaʻi i ka maikaʻi o ka ea o ke kahua kūkulu.
Ma ke ʻano he mea hoʻohui koʻikoʻi i ka pena latex, hiki i ka hydroxyethyl cellulose ke hoʻomaikaʻi nui i ka hana hana a me ka hopena pani hope o ka pena latex ma o kāna mānoanoa maikaʻi loa, paʻa wai, kūpaʻa a me nā waiwai hana kiʻiʻoniʻoni. I ka manawa like, ma muli o kona palekana kaiapuni a me nā hiʻohiʻona VOC haʻahaʻa, hoʻokō ka hydroxyethyl cellulose i nā koi ʻōmaʻomaʻo a me ke kaiapuni o ka ʻoihana uhi hou. Me ka holomua o ka ʻenehana, ʻoi aku ka laulā o ka noi ʻana o ka hydroxyethyl cellulose i loko o ka pena latex, e hāʻawi ana i nā hopena ʻoi aku ka maikaʻi no ka hoʻomohala mau ʻana o ka ʻoihana kālai hale.
Ka manawa hoʻouna: Sep-20-2024