He aha te hydroxyethyl cellulose?

He aha te hydroxyethyl cellulose?

Te pūhui hauwaioraitiri (HEC), he mā, he kōwhai mā, he kakara kore, he totoka muka, he paura rānei, kāore he paitini, i hangaia mā te whakaetere i te cellulose kawakore me te ethylene oxide (chlorohydrin rānei), nō te momo Nonionic soluble cellulose ethers. Nā te mea he pai ngā āhuatanga o te HEC pērā i te whakamātotoru, te whakatārewatanga, te horapa, te whakaemulsifying, te here, te hanga kiriata, te tiaki i te makuku me te whakarato i ngā colloid tiaki, kua whānuitia te whakamahinga i roto i te tūhuratanga hinu, te paninga, te hanga, te rongoā me te kai, te kakahu, te hanga pepa me ngā polymer. Polymerization me ētahi atu mara.

He whānuitia te whakamahinga o te Hydroxyethyl cellulose i roto i te umanga paninga. Me titiro tātou ki tana mahi i roto i ngā paninga:

Ka ahatia ina tūtaki te hydroxyethyl cellulose ki ngā paninga wai-hāngai?

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 whakamānu, te hanga kiriata, te marara, te pupuri wai me te whakarato i ngā colloid tiaki:

Ka wairewa te HEC i roto i te wai wera, i te wai matao rānei, ā, kāore e pupū ake i te pāmahana tiketike, i te wai kohua rānei, nō reira he whānuitia ngā āhuatanga wairewa me te matotoru, tae atu ki te kore e whakapūpū i te wai wera;

E rua ngā wā ka nui ake te kaha o te pupuri wai i tō te methyl cellulose, ā, he pai ake te whakahaere i te rere;

Ka taea e te mea kore-ionic te noho tahi me te whānuitanga o ngā pūmua wairewa-wai, ngā matū horoi, me ngā tote, ā, he mea whakamātotoru colloidal pai rawa atu kei roto ngā otinga electrolyte kukū-teitei;

Ki te whakatauritea ki te methyl cellulose me te hydroxypropyl methyl cellulose kua mōhiotia, ko te kaha marara oHECte mea kino rawa atu, engari ko te kaha tiaki colloid te mea tino kaha rawa atu.

I te mea he paura, he totoka muka rānei te hydroxyethyl cellulose i tukatukahia ki te mata, e whakamahara ana a Shandong Heda kia aro koe 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 oko whakaranu, kaua hoki e hono tika te hydroxyethyl cellulose me te hydroxyethyl cellulose ki roto i te oko whakaranu i roto i te nui, i te ahua rānei o ngā puranga me ngā pōro.

(3) He hononga mārama kei waenganui i te pāmahana wai me te pH o te wai ki te memeha o te hydroxyethyl cellulose, nō reira me aro nui ki tēnei.

(4) Kaua rawa 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 whakamakukutanga ka āwhina i te whakarewatanga.

(5) Tāpirihia he rongoā harore ki te mea ka taea i mua.

(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.