Paura rapa—Ka whakapai ake i te ōritetanga me te paheke o te pūnaha i te āhua whakaranu mākū. Nā ngā āhuatanga o te pūmua, ka tino whakapai ake te piri o te rauemi whakaranu mākū, ka nui te āwhina ki te mahi; i muri i te maroke, ka piri ki te paparanga mata maeneene me te matotoru. Ka whakawhiti, ka whakapai ake i te pānga atanga o te onepu, te kirikiri, me ngā pūwero. I raro i te kaupapa o te whakarite i te nui o te tāpiri, ka taea te whakarei ake ki roto i te kiriata i te atanga, kia ngāwari ai te piri o te taera, kia whakaitihia te modulus elastic, ā, ka mimiti i te ahotea whakarerekētanga wera ki te whānuitanga nui. Mēnā ka rumakina ki te wai i te wāhanga o muri mai, ka puta he ahotea pēnei i te ātete wai, te pāmahana ārai, me te whakarerekētanga rauemi kāore i te ōrite (tauwehenga whakarerekētanga taera 6×10-6/℃, tauwehenga whakarerekētanga raima sima 10×10-6/℃), ā, ka whakapai ake i te ātete huarere. Hydroxypropyl Methyl Cellulose HPMC—Ka whakarato i te pupuri wai pai me te mahi mō te moata hou, inā koa mō te wāhi mākū. Hei whakarite kia maeneene te haere o te tauhohenga wai, ka taea te ārai i te mimiti nui o te wai i roto i te papa, me te mimiti o te paparanga o te mata. Nā te mea he pai ki te uru ki te hau (1900g/L—-1400g/LPO400 onepū 600HPMC2), ka whakaitihia te matotoru o te piri taera, ka penapena rauemi, ka whakaitihia hoki te kaha o te moata whakapakeke.
Ko te paura rapa tāera e taea te whakamarara anō he rauemi hanga whare matomato, he hoa taiao, he penapena hiko, he kounga teitei, he maha ngā kaupapa, ā, he tāpiri mahi nui hoki mō te moata maroke-whakaranu. Ka taea e ia te whakapai ake i te mahi a te moata, te whakanui ake i te kaha o te moata, te whakanui ake i te kaha here i waenga i te moata me ngā momo papa, te whakapai ake i te ngāwari me te ngāwari mahi, te kaha pēhi, te kaha piko, te ātete kakahu, te pakari, me te matotoru o te moata. Te kaha pupuri me te wai, te kaha hanga. He kaha te mahi a te paura rapa tāera e taea te whakamarara anō, ā, he teitei te kaha here me ngā āhuatanga ahurei o te paura rapa tāera e taea te whakamarara anō. Nō reira, he whānui rawa te whānuitanga o ā rātou tono. Ko te mahi a te hydroxypropyl methylcellulose he pupuri wai, he whakamātotoru me te mahi hanga i te wā tōmua, ā, ko te paura rapa e taea te whakamarara anō o te piri tāera he kaha i te wā o muri mai, he mahi tino pai ki te pakari, te ātete waikawa me te kawakore o te kaupapa. Te pānga o te paura rapa ka taea te whakamarara anō i te piri tāera ki te moata hou: te whakaroa i te wā mahi me te whakarerekē i te wā kia pai ake ai te pupuri wai, kia pai ai te makuku o te sima, kia pai ake ai te ātete ki te totohu (paura rapa kua whakarerekētia motuhake) me te whakapai ake i te mahi (he ngāwari ki te whakamahi. He hanganga o runga te papa, he ngāwari ki te pēhi i ngā tāera ki roto i te piri). He pai te piri o te moata whakapakeke ki ngā papa maha, tae atu ki te raima, te paraikete, te rakau, ngā tāera tawhito, te PVC ahakoa i raro i ngā āhuatanga āhuarangi rerekē, ā, he pai hoki te kaha ki te whakarerekē i te āhua.
He tino kitea te pānga o te tāpiri o te paura rapa ka taea te whakamarara anō mō ngā piri taera ki te whakapai ake i te mahi a ngā piri taera sima, ā, he pānga nui ki te kaha piri, te ātete wai, me te ātete tawhito o te piri. I tēnei wā, he maha ngā momo paura rapa ka taea te whakamarara anō mō ngā piri taera kei te mākete, pērā i ngā paura rapa ka taea te whakamarara anō kiriaku, ngā paura styrene-kiriaku, ngā copolymer vinyl acetate-ethylene, me ētahi atu. I te nuinga o te wā, ko ngā piri taera e whakamahia ana i roto i ngā piri taera kei te mākete. Ko te nuinga o ngā paura rapa ka taea te whakamarara anō he copolymer vinyl acetate-ethylene.
(1) I te pikinga ake o te nui o te sima, ka piki ake te kaha taketake o te paura rapa ka taea te whakamarara anō mō te piri taera, ā, i te wa ano, ka piki ake te kaha o te piri kume i muri i te rumakina ki te wai me te kaha o te piri kume i muri i te whakamaroketanga wera.
(2) I te pikinga ake o te paura rapa whakamarara anō mō te piri taera, ka piki ake te kaha o te here kume o te paura rapa whakamarara anō mō te piri taera i muri i te rumakina ki te wai, me te kaha o te here kume i muri i te whakamaroketanga wera, engari i muri i te whakamaroketanga wera, ka tino piki ake te kaha o te here kume.
Nā te mea he pai ngā āhuatanga whakapaipai me ngā āhuatanga mahi pērā i te pakari, te ātete wai me te ngāwari ki te horoi, he whānui te whakamahinga o ngā taera uku: tae atu ki ngā pakitara, ngā papa, ngā tuanui me ngā puna kaukau, me ētahi atu, ā, ka taea te whakamahi i roto, i waho hoki. Ko te tikanga whakapiri tawhito o ngā taera ko te tikanga hanga paparanga matotoru, arā, me pani tuatahi te moata noa ki muri o ngā taera, kātahi ka pēhi i ngā taera ki te paparanga turanga. Ko te matotoru o te paparanga moata he 10 ki te 30mm. Ahakoa he tino pai tēnei tikanga mō te hanga i runga i ngā turanga kāore i te ōrite, ko ngā ngoikoretanga ko te iti o te whai huatanga o te whakapiri taera taera, te nui o ngā whakaritenga mō te pūkenga hangarau a ngā kaimahi, te nui ake o te tūponotanga o te taka atu nā te ngoikore o te ngāwari o te moata, me te uaua ki te whakatika i te moata i te papa hanga. He tino whakahaeretia te kounga. He pai anake tēnei tikanga mō ngā taera he tere mimiti wai teitei. I mua i te whakapiri i ngā taera, me rumakina ngā taera ki te wai kia rawaka ai te kaha o te piri.
I tēnei wā, ko te tikanga tārai e whakamahia whānuitia ana i Ūropi ko te tikanga piri paparanga angiangi, arā, ka waruhia te puranga piri tārai kua whakarerekētia ki te polymer ki runga i te mata o te paparanga turanga kia tāraitia i mua ki te whakamahi i te spatula niho kia puta ai he rārangi ara ake. Ā, kia rite te matotoru o te paparanga moata, kātahi ka pēhi i ngā tārai ki runga, ka huri paku, ko te matotoru o te paparanga moata he 2 ki te 4mm pea. Nā te whakarerekētanga o te cellulose ether me te paura rapa ka taea te whakamarara anō, he pai te mahi piri o tēnei piri tārai ki ngā momo paparanga turanga me ngā paparanga mata rerekē tae atu ki ngā tārai kua whakakikoruatia katoatia me te tino iti o te mimiti wai, ā, he pai te ngāwari, kia mimiti i te ahotea i puta mai i ngā āhuatanga pēnei i te rerekētanga pāmahana, me te ātete totoro pai, he roa te wā tuwhera mō te hanganga paparanga angiangi, ka taea te tere ake i te tere o te hanganga, he ngāwari ki te whakahaere, ā, kāore e hiahiatia kia whakamakukuhia ngā tārai ki te wai i mua. He ngāwari ki te whakahaere i tēnei tikanga hanga, ā, he ngāwari ki te whakahaere i te kounga hanga i te papaanga.
Wā tuku: Hakihea-12-2022