Te Pūtauora Waikawa (HEC)He etera cellulose kore-ionic wairewa-wai tēnei, e whakamahia whānuitia ana i roto i ngā paninga, ngā rauemi hanga, te rongoā, ngā matū o ia rā me ētahi atu mara. Heoi, he nui te wairewatanga o te HEC i roto i te wai, ā, he ngoikore te hydrophobicity, ka arahi pea tēnei ki ngā herenga mahi i roto i ētahi horopaki tono. Nō reira, i puta mai te hydrophobically modified hydroxyethyl cellulose (HMHEC) hei whakapai ake i ōna āhuatanga rheological, tōna kaha ki te whakamātotoru, tōna pumau emulsification me tōna ātete ki te wai.
1. Te hiranga o te whakarerekētanga hydrophobic o te hydroxyethyl cellulose
Te whakapai ake i ngā āhuatanga matotoru me ngā āhuatanga rheological
Ka taea e te whakarerekētanga ā-wai te whakapai ake i te kaha whakamātotoru o te HEC, inā koa i ngā tere kutikuti iti. Ka whakaatuhia he matotoru ake, ka āwhina i te whakapai ake i te thixotropy me te pseudoplasticity o te pūnaha. He mea nui tēnei āhuatanga i roto i ngā mara o ngā paninga, ngā wai keri hinu, ngā hua tiaki whaiaro, me ētahi atu, ā, ka taea te whakarei ake i te pumau me te pānga whakamahi o te hua.
Whakapai ake i te pumau o te emulsion
I te mea ka taea e te HEC whakarerekētia te hanga i tētahi hanganga honohono i roto i te wairewa, ka tino whakapai ake i te pumau o te emulsion, ka taea te whakaiti i te wehenga hinu-wai, me te whakapai ake i te pānga emulsification. Nō reira, he nui te uara tono i roto i ngā mara o ngā paninga emulsion, ngā hua tiaki kiri me ngā emulsifier kai.
Whakapai ake i te ātete wai me ngā āhuatanga hanga kiriata
He tino pai te HEC tuku iho ki te wai, ā, he ngāwari ki te wairewa i roto i ngā taiao haumākū teitei, i te wai rānei, ka pā tēnei ki te ātete wai o te rauemi. Mā te whakarerekētanga wai-kore, ka taea te whakapai ake i tōna whakamahinga i roto i ngā paninga, ngā piripiri, te hanga pepa me ētahi atu mara, ā, ka taea hoki te whakapai ake i tōna ātete wai me ōna āhuatanga hanga kiriata.
Whakapai ake i ngā āhuatanga angiangi kutikuti
Ka taea e te HEC kua whakarerekētia ki te wai te whakaiti i te matotoru i raro i ngā āhuatanga kutikuti teitei, me te pupuri tonu i te ōritetanga teitei i ngā tere kutikuti iti, ā, ka whakapai ake i te mahi hanga me te whakaiti i te whakapaunga pūngao. He uara nui tōna i roto i ngā ahumahi pēnei i te keri hinu me ngā paninga hoahoanga.
2. Te whakarerekētanga wai-whakaaro o te hydroxyethyl cellulose
Ko te whakarerekētanga wai-whakahāwea HEC ka tutukihia mā te whakauru i ngā rōpū wai-whakahāwea hei whakarerekē i tōna wairewatanga me ōna āhuatanga matotoru mā te tāpiri matū, te whakarerekētanga ā-tinana rānei. Ko ngā tikanga whakarerekētanga wai-whakahāwea noa e whai ake nei:
Te honohono rōpū hydrophobic
Te whakauru i te alkyl (pērā i te hexadecyl), te aryl (pērā i te phenyl), te siloxane, ngā rōpū fluorinated rānei ki runga i te ngota HEC mā te tauhohenga matū hei whakapai ake i tōna hydrophobicity. Hei tauira:
Mā te whakamahi i te tauhohenga esterification, te etherification rānei hei hono i te alkyl mekameka-roa, pērā i te hexadecyl, te octyl rānei, hei hanga i tētahi hanganga honohono hydrophobic.
Te whakauru i ngā rōpū silicone mā te whakarerekētanga siloxane hei whakapai ake i tōna ātete wai me tōna hinuhinu.
Mā te whakamahi i te whakarerekētanga fluorination hei whakapai ake i te ātete ki te huarere me te hydrophobicity, e pai ai mō ngā paninga teitei, ngā tono taiao motuhake rānei.
Te whakakotahitanga o te polymerization, te whakarerekētanga hononga-whiti rānei
Mā te whakauru i ngā comonomers (pērā i ngā acrylates) me ngā kaihoko hononga-whakawhiti (pērā i ngā kapia epoxy) hei hanga i tētahi whatunga hononga-whakawhiti, ka whakapai ake i te ātete wai me te kaha whakamātotoru o te HEC. Hei tauira, mā te whakamahi i te HEC kua whakarerekētia ki te wai i roto i ngā whakamomona polymer ka taea te whakarei ake i te pumau me te pānga whakamātotoru o te whakamomona.
Te whakarerekētanga ā-tinana
Mā te whakamahi i te hangarau mimiti mata, te hangarau paninga rānei, ka pania ngā ngota wai-whakahāwea ki te mata o te HEC hei hanga i tētahi āhua wai-whakahāwea. He ngāwari noa iho tēnei tikanga, ā, he pai mō ngā tono e hiahiatia ana he nui te pumau matū, pērā i te kai me te rongoā.
Te whakarerekētanga hononga hydrophobic
Mā te whakauru i tētahi iti o ngā rōpū hydrophobic ki runga i te ngota HEC, ka hangaia he whakakotahitanga honohono ki roto i te wairewa, ā, ka whakapai ake i te kaha whakamātotoru. He whānuitia te whakamahinga o tēnei tikanga i roto i te whakawhanaketanga o ngā whakamātotoru mahi-teitei, ā, he pai hoki mō ngā paninga, ngā matū mara hinu me ētahi atu mara.
Te whakarerekētanga wai-whakaaro ote hauwaitoiretiri pūtauHe huarahi nui te whakamahi hei whakapai ake i tana mahi tono, ka taea ai te whakarei ake i tōna kaha ki te whakamātotoru, te pumau o te emulsification, te ātete ki te wai me ngā āhuatanga rheological. Ko ngā tikanga whakarerekētanga noa ko te whakapiri rōpū hydrophobic, te whakarerekētanga copolymerization, te whakarerekētanga cross-linking rānei, te whakarerekētanga ā-tinana me te whakarerekētanga hononga hydrophobic. Mā te whiriwhiri tika i ngā tikanga whakarerekētanga ka taea te arotau i te mahi a te HEC kia rite ki ngā whakaritenga tono rerekē, kia nui ake ai te mahi i roto i ngā mara maha pēnei i ngā paninga hoahoa, ngā matū mara hinu, te tiaki whaiaro, me te rongoā.
Wā tuku: Maehe-25-2025