Raina Whakakotahi Paipa HDPE Maha-apa

Ko te paipa HDPE he paipa kirihou ngāwari i hangaia ki te polyethylene matotoru-teitei e whakamahia whānuitia ana mō te whakawhiti wai me te hau pāmahana iti. I ngā wā tata nei, kua whakamahia whānuitia ngā paipa HDPE mō te kawe wai inu, para kino, hau maha, paru, wai ahi, wai ua, me ētahi atu. Nā te hononga ngota kaha o ngā rauemi paipa HDPE ka taea te whakamahi mō ngā paipa pēhanga teitei. He roa, he rongonui hoki ngā paipa polyethylene mō te hau, te hinu, te keri, te wai, me ētahi atu ahumahi. Nā te iti o te taumaha me te ātete ki te waikura, kei te tino tipu haere te umanga paipa HDPE. I te tau 1953, i kitea e Karl Ziegler rāua ko Erhard Holzkamp te polyethene matotoru-teitei (HDPE). Ka taea e ngā paipa HDPE te mahi pai i roto i te whānuitanga o te pāmahana mai i te -2200 F ki te +1800 F. Heoi, kāore i te tūtohutia te whakamahi i ngā paipa HDPE ina neke atu te pāmahana wai i te 1220 F (500 C).

Ka hangaia ngā paipa HDPE mā te whakakotahitanga o te ethylene, he hua taha o te hinu. Ka tāpirihia ngā momo tāpiri (ngā mea whakau, ngā mea whakakī, ngā mea whakapūmau, ngā mea whakangawari, ngā mea whakahinuhinu, ngā mea tae, ngā mea aukati mura, ngā mea pupuhi, ngā mea hono whakawhiti, ngā mea tāpiri pirau ultraviolet, me ētahi atu) hei whakaputa i te paipa HDPE whakamutunga me ngā wāhanga. Ka hangaia ngā roa o ngā paipa HDPE mā te whakamahana i te kapia HDPE. Kātahi ka tukuna mā roto i te mata, e whakatau ana i te whānui o te paipa. Ka whakatauhia te matotoru o te pakitara o te paipa mā te huinga o te rahi o te mata, te tere o te tīwiri, me te tere o te tarakihana tango. I te nuinga o te wā, ka tāpirihia he pango waro 3-5% ki te HDPE kia ātete ki te UV, ka huri ai ngā paipa HDPE kia pango te tae. Kei te wātea ētahi atu momo tae engari kāore i te whakamahia pinepine. Ko ngā paipa HDPE tae, he mea hanga ki te 90-95% pango, ā, he 5% o te mata o waho he rārangi tae.