He peita, e kiia ana i Haina ko te peita. Ka pania te peita ki te mata o te mea hei tiaki, hei whakapaipai rānei, ā, ka taea te hanga i tētahi kiriata tonu e piri pūmau ana ki te mea hei paninga.
He aha te Hydroxyethyl Cellulose?
Ko te Hydroxyethyl cellulose (HEC), he mā, he kōwhai mārama rānei, kāore he kakara, he kore paitini te muka, he paura rānei, i hangaia mā te tauhohenga etherification o te cellulose kawakore me te ethylene oxide (chlorohydrin rānei), nō roto i ngā cellulose ethers wairewa kore-ionic. Nā te mea he pai ngā āhuatanga o te HEC ki te whakamātotoru, te whakatārewatanga, te horapa, te whakaemulsifying, te here, te hanga kiriata, te tiaki i te makuku me te whakarato colloid tiaki, kua whānuitia te whakamahinga i roto i te tūhuratanga hinu, te paninga, te hanga, te rongoā, te kai, te kakahu, te hanga pepa me te polymerization me ētahi atu mara.
Ka ahatia ina tūtaki te hydroxyethyl cellulose ki te peita wai?
Hei matū horoi kore-ionic, kei te hydroxyethyl cellulose ēnei āhuatanga e whai ake nei, hei tāpiri atu ki te whakamātotoru, te whakatārewatanga, te here, te mānu, te hanga kiriata, te marara, te pupuri wai me te whakarato i te colloid tiaki:
Ka wairewa te HEC i roto i te wai wera, i te wai matao rānei, i te pāmahana tiketike, i te wai kohua rānei, me te kore e maturuturu, nō reira he whānuitia ngā āhuatanga wairewa me te matotoru, ā, kāore e wera te wai;
E rua ngā teitei ake o te kaha pupuri wai i tō te methyl cellulose, ā, he pai ake te whakahaere i te rere;
Ki te whakaritea ki te methyl cellulose me te hydroxypropyl methyl cellulose kua mōhiotia, ko te kaha marara o HEC te mea kino rawa atu, engari ko te kaha tiaki colloid te mea tino kaha.
Kāore i te ionic, ā, ka taea te noho tahi me te whānuitanga o ngā polymer wairewa-wai, ngā surfactants, me ngā tote. He whakamātotoru colloidal pai rawa atu mō ngā otinga electrolyte kukū-teitei;
Me pēhea te whakamahi i te hydroxyethyl cellulose? Me pēhea te tāpiri?
Tāpirihia tika i te wā e whakaputa ana - ko tēnei tikanga te mea māmā rawa, ā, ko te wā poto rawa atu.
Tāpirihia he wai ma ki roto i tētahi peere nui kei roto he mīhini kutikuti teitei. Tīmata ki te whakaoho tonu i te tere puhoi, ā, āta tātarihia te hydroxyethyl cellulose ki roto i te wairewa kia ōrite. Me whakaoho tonu kia mākū katoa ngā matūriki. Kātahi ka tāpirihia ngā mea tiaki me ngā momo tāpiri. Pērā i ngā tae, ngā āwhina whakamarara, te wai haukini, me ētahi atu. Whakaohokia kia memeha rawa te hydroxyethyl cellulose (ka tino piki ake te matotoru o te wairewa) i mua i te tāpiri i ētahi atu wāhanga ki te tauira mō te tauhohenga.
Kua rite ki te waipiro whaea
Ko te whakarite i te wai whaea me te kukū teitei ake i te tuatahi, kātahi ka tāpirihia ki te hua. Ko te painga o tēnei tikanga he ngāwari ake, ā, ka taea te tāpiri tika ki te hua kua oti, engari me penapena tika. He rite ngā mahi o tēnei tikanga ki te nuinga o ngā mahi i roto i te tikanga 1; ko te rerekētanga kāore he hiahia mō te whakaoho kutikuti teitei, ā, ko ētahi whakaoho anake he kaha ki te pupuri i te hydroxyethyl cellulose kia marara noa i roto i te wai ka taea te haere tonu me te kore e mutu te whakaoho kia memeha katoa ki roto i te wai matotoru. Heoi, me mōhio me tāpiri wawe te harore ki te wai whaea.
I te mea he paura, he totoka muka rānei te hydroxyethyl cellulose i tukatukahia ki te mata, e whakamahara ana a Lihongde ki a koe kia aro ki ngā āhuatanga e whai ake nei i te wā e whakarite ana i te wai whaea hydroxyethyl cellulose:
(1) I mua atu, ā, i muri i te tāpiri i te hydroxyethyl cellulose, me whakaoho tonu kia mārama rawa te wairewa.
(2) Me āta tātari ki roto i te tāke whakaranu, kaua hoki e tāpirihia he nui, kaua hoki e tāpiri tika i te hydroxyethyl cellulose ki roto i te tāke whakaranu.
(3) He hononga nui tō te pāmahana wai me te uara PH i roto i te wai ki te whakarewanga o te hydroxyethyl cellulose, nō reira me aro nui atu.
(4) Kaua e tāpirihia ētahi matū kawakore ki te ranunga i mua i te whakamakukutanga o te paura hydroxyethyl cellulose ki te wai. Mā te whakanui ake i te pH i muri i te whakamakuku ka āwhina i te memeha.
(5) Ki te taea, tāpirihia he rongoā harore i mua i te wā
(6) Ina whakamahia te hydroxyethyl cellulose matotoru-teitei, kaua te kukū o te wai matua e neke ake i te 2.5-3% (mā te taumaha), ki te kore ka uaua te whakahaere i te wai matua.
Wā tuku: Maehe-02-2023