Ko te māngaro ether me te cellulose ether he momo ether e whakamahia ana i roto i ngā ahumahi maha, inā koa i roto i te hanganga me ngā paninga. Ahakoa he rite tonu te āhua o te noho hei polymer wairewa-wai me ngā āhuatanga whakamātotoru me te whakaū, he rerekētanga nui kei waenganui i a rāua, ko te pūtake me te hanganga matū.
Māngaro Etera:
1. Pūtake:
- Taketake Taiao: I ahu mai te māngaro ether i te māngaro, he warowaihā e kitea ana i roto i ngā tipu. He mea tango noa te māngaro mai i ngā hua pēnei i te kānga, te rīwai, te manioka rānei.
2. Hanganga Matū:
- Te Hanganga o te Pūmua: He polysaccharide te māngaro i hangaia mai i ngā waeine hukahuka e honoa ana e ngā here glycosidic. Ko ngā ether māngaro he mea whakarerekētia mai i te māngaro, ka whakakapia ngā rōpū hydroxyl i runga i te ngota māngaro ki ngā rōpū ether.
3. Ngā tono:
- Ahumahi Hanga: He maha ngā wā ka whakamahia ngā māngaro etera i roto i te ahumahi hanga hei tāpiri i roto i ngā hua hanga-gypsum, ngā moata, me ngā rauemi hanga-sima. Ka whai wāhi atu rātou ki te whakapai ake i te mahi, te pupuri wai, me te piri.
4. Ngā Momo Noa:
- Māngaro Hydroxyethyl (HES): Ko tētahi momo māngaro ether e kitea whānuitia ana ko te māngaro hydroxyethyl, ka whakauruhia ngā rōpū hydroxyethyl hei whakarerekē i te hanganga o te māngaro.
Etera Cellulose:
1. Pūtake:
- Taketake Taiao: Ko te cellulose ether i ahu mai i te cellulose, he pūmua taiao e kitea ana i roto i ngā pakitara pūtau o ngā tipu. He wāhanga nui o ngā pakitara pūtau tipu, ā, ka tangohia mai i ngā puna pēnei i te penupenu rakau, te miro rānei.
2. Hanganga Matū:
- Te Hanganga o te Pūmua: He pūmua rārangi te cellulose kei roto ko ngā waeine hukahuka e honoa ana e ngā hononga β-1,4-glycosidic. Ko ngā cellulose ethers he uri nō te cellulose, ka whakarerekētia ngā rōpū hydroxyl i runga i te ngota cellulose ki ngā rōpū ether.
3. Ngā tono:
- Ahumahi Hanga: He whānui te whakamahinga o ngā cellulose ethers i roto i te ahumahi hanga, he rite ki ngā māngaro māngaro. Ka whakamahia ēnei i roto i ngā hua sima, ngā piripiri taera, me ngā moata hei whakapai ake i te pupuri wai, te ngāwari o te mahi, me te piri.
4. Ngā Momo Noa:
- Hydroxyethyl Cellulose (HEC): Ko tētahi momo cellulose ether e kitea whānuitia ana ko te hydroxyethyl cellulose, ka whakauruhia ngā rōpū hydroxyethyl hei whakarerekē i te hanganga o te cellulose.
- Methyl Cellulose (MC): Ko tētahi atu momo noa ko te methyl cellulose, ka whakaurua mai ngā rōpū methyl.
Ngā Rerekētanga Matua:
1. Pūtake:
- I ahu mai te māngaro etera i te māngaro, he warowaihā e kitea ana i roto i ngā tipu.
- I ahu mai te cellulose ether i te cellulose, he wāhanga nui o ngā pakitara pūtau tipu.
2. Hanganga Matū:
- Ko te pūhui pūtake mō te māngaro etera ko te māngaro, he polysaccharide i hangaia mai i ngā waeine hukahuka.
- Ko te pūmua turanga mō te cellulose ether ko te cellulose, he pūmua rārangi i hangaia mai i ngā waeine hukahuka.
3. Ngā tono:
- E whakamahia ana ngā momo etera e rua i roto i te umanga hanga, engari ka rerekē pea ngā whakamahinga me ngā hanganga motuhake.
4. Ngā Momo Noa:
- Ko te māngaro hauwaioraiti etiri (HES) me te hauwaioraiti etiri etiri (HEC) he tauira o ēnei matū etero.
Ahakoa he pūmua wairewa-wai te māngaro etera me te cellulose etera e whakamahia ana hei tāpiri i roto i ngā momo whakamahinga, he rerekē ō rāua pūtake, pūmua turanga, me ngā hanganga matū motuhake. Ka pā pea ēnei rerekētanga ki tā rāua mahi i roto i ngā whakatakotoranga me ngā whakamahinga motuhake.
Wā tuku: Hanuere-06-2024