Ko te HPMC (Hydroxypropyl Methyl Cellulose) me te HEMC (Hydroxy Ethyl Methyl Cellulose) he cellulose ethers e whakamahia whānuitia ana i roto i ngā rauemi hanga nā ō rāua āhuatanga ahurei. He polymer wairewa-wai ēnei i ahu mai i te cellulose, he polymer tūturu e kitea ana i roto i ngā pakitara pūtau tipu. Ka whakamahia te HPMC me te HEMC hei tāpiri i roto i ngā hua hanga maha hei whakarei ake i ō rāua āhuatanga me te whakapai ake i te ngāwari o te tukatuka.
Anei ētahi whakamahinga o te HPMC me te HEMC i roto i ngā rauemi hanga:
Ngā Piripiri Tāera: He maha ngā wā ka tāpirihia te HPMC me te HEMC ki ngā piripiri tāera hei whakapai ake i te mahi me te kaha o te piri. Ka mahi ēnei pūmua hei whakamātotoru, ka whakarato i te wā tuwhera pai ake (kia pēhea te roa e taea ai te whakamahi i te piripiri) me te whakaiti i te totohu o te tāera. Ka whakarei ake hoki i te piri o te piripiri ki ngā papa rerekē.
Ngā Mota Sima: Ka whakamahia te HPMC me te HEMC i roto i ngā mota sima pērā i ngā paraikete, ngā paraikete me ngā pūnaha whakaoti whakamahana o waho (EIFS). Ka whakapai ake ēnei pūmua i te ngāwari o te mahi o te mota, ka māmā ake te hora me te whakamahi. Ka whakarei ake hoki i te piripono, ka whakaiti i te mimiti wai, ā, ka whakapai ake i te piri o ngā mota ki ngā momo papa.
Ngā hua e hangai ana ki te gypsum: Ka whakamahia te HPMC me te HEMC i roto i ngā rauemi e hangai ana ki te gypsum pērā i ngā pāreti gypsum, ngā hononga honohono me ngā papa raro e whakaōrite ana i a ia anō. Ka mahi rātou hei kaihoko pupuri wai, ka whakapai ake i te mahi me te whakaroa i te wā whakatakoto o te rauemi. Ka whakarei ake hoki ēnei polymer i te ātete pakaru, ka whakaiti i te mimiti me te whakapai ake i te piri.
Ngā Matū Whakatakoto-ā-Whaiaro: Ka tāpirihia te HPMC me te HEMC ki ngā matū whakataurite-ā-whaiaro hei whakapai ake i te rere me ngā āhuatanga whakataurite. Ka āwhina ēnei pūmua ki te whakaiti i te matotoru, te whakahaere i te mimiti wai, me te whakarato i te mutunga mata pai ake. Ka whakarei ake hoki i te piri o te matū ki te papa.
Te whakapūkara: Ka taea te whakamahi i te HPMC me te HEMC mō te whakapūkara i ngā hononga taera me te pereki. Ka mahi rāua hei whakarerekē i te rheology, hei whakapai ake i te rere me te ngāwari o te mahi o ngā whakapūkara. Ka whakaitihia hoki e ēnei polymer te urunga wai, te whakapai ake i te piri me te whakapakari i te ātete ki te pakaru.
I te nuinga o te wā, e whakamahia whānuitia ana te HPMC me te HEMC i roto i ngā rauemi hanga nā te mea ka taea e rāua te whakapai ake i te ngāwari o te tukatuka, te piri, te pupuri wai, me te mahi whānui o ngā hua. Ka whakatairangahia e rāua ngā mahi hanga pai ake mā te whakapai ake i te pakari me te kounga o ngā momo wāhanga hanga.
Wā tuku: Pipiri-08-2023