ʻO ka Hydroxyethyl cellulose (HEC) he keʻokeʻo a ʻulaʻula melemele, ʻaʻala ʻole, fibrous a i ʻole pauka paʻa. Hana ʻia ia me nā linters pulupulu maka a i ʻole ka pulp i hoʻomaʻemaʻe ʻia i hoʻomoʻi ʻia i loko o 30% wai wai caustic soda. Ma hope o ka hapalua hola, lawe ʻia a paʻi ʻia. E kaomi a hiki i ka ratio o ka wai alkaline i 1:2.8, a laila e ʻoki. Hoʻomākaukau ʻia ia e ka etherification reaction a no ka non-ionic soluble cellulose ethers. He mea mānoanoa nui ka Hydroxyethyl cellulose i ka pena latex. E noʻonoʻo kākou i ka hoʻohana ʻana i ka hydroxyethyl cellulose HEC i ka pena latex a me ka mālama ʻana.
1. Hoʻolako ʻia me ka waiʻona makuahine no ka hoʻohana ʻana: e hoʻohana mua i ka hydroxyethyl cellulose HEC no ka hoʻomākaukau ʻana i ka waiʻona makuahine me kahi kiʻekiʻe kiʻekiʻe, a laila hoʻohui i ka huahana. ʻO ka maikaʻi o kēia ʻano hana ʻoi aku ka maʻalahi a hiki ke hoʻohui pololei ʻia i ka huahana i hoʻopau ʻia, akā pono e mālama pono ʻia. Ua like nā ʻanuʻu o kēia ʻano me ka hapa nui o nā ʻanuʻu ma ke ʻano 2; ʻO ka ʻokoʻa, ʻaʻohe pono o ka mea hoʻouluulu kiʻekiʻe, a ʻo kekahi mau mea hoʻouluulu me ka mana lawa e mālama i ka hydroxyethyl cellulose i hoʻopuehu like ʻia i loko o ka hopena hiki ke hoʻomau ʻia me ka ʻole o ka hoʻokuʻu ʻana a hiki i ka hoʻoheheʻe ʻia ʻana i loko o kahi hopena viscous. Eia nō naʻe, pono e hoʻomaopopo ʻia e hoʻohui ʻia ka fungicide i ka waiʻona makuahine i ka hiki.
2. Hoʻohui pololei i ka wā hana: ʻo kēia ʻano ka mea maʻalahi a lawe i ka manawa pōkole. E hoʻohui i ka wai maʻemaʻe i loko o kahi bākeke nui i hoʻolako ʻia me kahi hui ʻoki kiʻekiʻe. E hoʻomaka i ka hoʻoulu ʻana me ka wikiwiki haʻahaʻa a kānana mālie i ka hydroxyethyl cellulose i loko o ka hopena. E hoʻomau i ka hoʻoulu ʻana a hiki i ka pau ʻana o nā ʻāpana āpau. A laila hoʻohui i nā preservatives a me nā mea hoʻohui like ʻole. E like me nā puaʻa, nā mea hoʻopuehu, ka wai amonia, a me nā mea ʻē aʻe. E hoʻoulu a hiki i ka pau ʻana o ka hydroxyethyl cellulose HEC (e piʻi aʻe ka viscosity o ka hopena) a laila hoʻohui i nā mea ʻē aʻe i loko o ke ʻano no ka pane ʻana.
No ka mea he pauda a i ʻole fibrous paʻa ka hydroxyethyl cellulose HEC i mālama ʻia i ka ʻili, i ka wā e hoʻomākaukau ai i ka waiʻona makuahine hydroxyethyl cellulose, e hoʻolohe i kēia mau mea:
(1) I ka hoʻohana ʻana i ka high-viscosity hydroxyethyl cellulose HEC, ʻaʻole pono ke kiʻekiʻe o ka waiʻona makuahine ma mua o 2.5-3% (ma ke kaupaona), inā ʻaʻole e paʻakikī ke mālama ʻana i ka waiʻona makuahine.
(2) Ma mua a ma hope o ka hoʻohui ʻana i ka hydroxyethyl cellulose HEC, pono e hoʻoulu mau ʻia a hiki i ka ʻike a maopopo loa ka hopena.
(3) E like me ka mea hiki, e hoʻohui i ka antifungal agent ma mua.
(4) Loaʻa ka pilina o ka wai wela a me ka waiwai pH o ka wai i ka hemo ʻana o ka hydroxyethyl cellulose, no laila pono ke nānā pono.
(5) Mai hoʻohui i kekahi mau mea alkaline i ka hui ʻana ma mua o ka hoʻopiha ʻia ʻana o ka pauka hydroxyethyl cellulose me ka wai. ʻO ka hoʻonui ʻana i ka pH ma hope o ka wai ʻana e kōkua i ka hoʻoheheʻe.
(6) Pono e kānana mālie ʻia i loko o ka pahu hui, ʻaʻole e hoʻohui i nā mea nui a i ʻole e hoʻohui pololei i ka hydroxyethyl cellulose i hoʻokumu ʻia i nā puʻupuʻu a me nā pōpō i loko o ka pahu hui.
ʻO nā mea nui e pili ana i ka viscosity o ka pena latex:
(1) Ka ʻinoʻino o ka mānoanoa e nā microorganisms.
(2) Ma ke kaʻina hana pena, inā kūpono ke kaʻina hana o ka hoʻohui ʻana i ka mānoanoa.
(3) Inā kūpono ka nui o ka mea hoʻoulu ʻili a me ka wai i hoʻohana ʻia i ke ʻano pena.
(4) ʻO ka lakio o ka nui o nā mānoanoa kūlohelohe ʻē aʻe i ka nui o ka hydroxyethyl cellulose i loko o ka hana pena.
(5) Ke hoʻokumu ʻia ka latex, ka ʻike o nā koena catalysts a me nā oxides ʻē aʻe.
(6) Kiʻekiʻe loa ka mahana i ka wā e hoʻopuehu ai ma muli o ka hoʻoulu ʻana.
(7) ʻOi aku ka nui o nā ʻōhū ea i loko o ka pena, ʻoi aku ka kiʻekiʻe o ka viscosity.
Hoʻololi iki ka viscosity o ka hydroxyethyl cellulose HEC i ka pae pH o 2-12, akā emi ka viscosity ma mua o kēia pae. Loaʻa iā ia nā waiwai o ka mānoanoa, hoʻopaneʻe, hoʻopaʻa, emulsifying, dispersing, mālama i ka maʻa a me ka pale ʻana i ka colloid. Hiki ke hoʻomākaukau ʻia nā hoʻonā i nā pae viscosity like ʻole. Paʻa ʻole ma lalo o ka maʻamau a me ke kaomi, e pale i ka haʻahaʻa, ka wela, a me ka wela kiʻekiʻe, a loaʻa ka paʻakai paʻakai maikaʻi loa i ka dielectrics, a ua ʻae ʻia kāna ʻano wai e loaʻa i nā paʻakai kiʻekiʻe a paʻa mau.
Ka manawa hoʻouna: Apr-01-2023