He aha te hydroxyethyl cellulose?

He aha te hydroxyethyl cellulose?

Hydroxyethyl cellulose (HEC), he ma, he kowhai kowhai, he hongi, he kore-paitini, he kiriu, he paura totoka, he mea whakarite ma te whakaetere o te cellulose kawakore me te ethylene oxide (he chlorohydrin ranei), no te puninga Nonionic soluble cellulose ethers. Na te mea he pai nga ahuatanga o te HEC penei i te matotoru, te aukati, te whakamarara, te whakaemulsifying, te honohono, te hanga kiriata, te tiaki i te makuku me te whakarato i nga colloids whakamarumaru, kua whakamahia nuitia i roto i te torotoro hinu, te paninga, te hanga, te rongoa me te kai, te kakano, te hanga pepa me te polymers. Polymerization me etahi atu mara.

Ko te Hydroxyethyl cellulose e whakamahia nuitia ana i roto i te umanga whakakikorua. Kia titiro tatou ki te mahi i roto i nga paninga:

Ka aha ina tutaki te hydroxyethyl cellulose ki nga paninga wai?

I te mea he surfactant kore-katote, kei a hydroxyethyl cellulose nga ahuatanga e whai ake nei hei taapiri atu ki te whakamatotoru, ki te whakatarewa, ki te here, ki te rewa, ki te hanga kiriata, ki te marara, ki te pupuri wai me te whakarato i nga colloids whakamarumaru:

He wairewa te HEC i roto i te wai wera, i te wai matao ranei, karekau e heke i te pāmahana teitei, te koropuputanga ranei, na te mea he maha nga ahuatanga o te whakarewatanga me nga ahuatanga pokey, tae atu ki te waiariki kore;

Ko te kaha o te pupuri i te wai he rua nga wa o te methyl cellulose, a he pai ake te whakahaere o te rere;

Ko te katote-kore ka taea te noho tahi me te maha atu o nga momo polymers wairewa-wairewa, surfactants, me nga tai, a he pai rawa atu te whakamaarata colloidal kei roto i nga otinga electrolyte kukū teitei;

Ka whakatauritea ki te methyl cellulose me te hydroxypropyl methyl cellulose, te kaha marara oHECKo te kino rawa atu, engari ko te kaha o te colloid tiaki te kaha rawa atu.

I te mea ko te hydroxyethyl cellulose kua rongoa i te mata he paura, he totoka kiko ranei, ka whakamahara a Shandong Heda ki a koe ki te aro ki nga mea e whai ake nei i te wa e whakarite ana i te waipiro whaea hydroxyethyl cellulose:

(1) I mua, i muri i te taapiri i te hydroxyethyl cellulose, me whakaoho tonu kia tino marama, kia marama te otinga.

(2) Me ata tatari ki roto i te oko whakaranu, kaua hoki e hono tika i te hydroxyethyl cellulose me te hydroxyethyl cellulose ki roto i te ipu whakaranu i roto i nga rahinga nui, i te ahua o nga kapia me nga poi.

(3) Ko te pāmahana wai me te uara pH o te wai he tino hononga ki te whakakorenga o te hydroxyethyl cellulose, no reira me aro nui ki a ia.

(4) Kaua rawa e taapiri etahi matū kawakore ki te ranunga i mua i te rukutanga o te paura hydroxyethyl cellulose ki te wai. Ko te whakanui ake i te pH i muri i te makuku ka awhina i te whakakorenga.

(5) I te mea ka taea, taapirihia he kaihoko antifungal i mua.

(6) I te wa e whakamahi ana i te hydroxyethyl cellulose teitei-nui, ko te kukū o te waipiro whaea kia kaua e teitei ake i te 2.5-3% (ma te taumaha), mena he uaua ki te hapai i te waipiro whaea.