I te ao tukatuka pūmua, he iti noa ngā tāpiringa e mahi mārire ana engari he whai hua pērā i ngā whakaū hopi whakarewa. Ko ēnei matū maha-whakamahinga te pou tuara o te pumau o te PVC (polyvinyl chloride), e whakarite ana kia mau tonu te kounga o ngā mea katoa mai i ngā paipa pakari ki ngā kiriata ngāwari i raro i te wera, te ahotea, me te wā. Mō ngā kaihanga me ngā miihini e whakatere ana i ngā tono o te hanga PVC hou, ehara i te mea hangarau noa te mārama ki ā rātou tono - he mea nui ki te tuku hua mutunga roa, kounga teitei.
He aha ngā mea whakaū hopi whakarewa?
Ngā mea whakaū hopi whakarewahe matū whakarewa ā-tinana i hangaia mā te tauhohenga i ngā waikawa ngako (pēnei i te waikawa stearic, te waikawa lauric rānei) me ngā waikura whakarewa, ngā hauwaiwai rānei. Ko ngā konganuku noa ko te konupūmā, te konutea, te barium, te cadmium (ahakoa kua mutu haere te whakamahi mō ngā take taiao), me te konupora. Ko tā rātou mahi makutu kei te whakataurite i ngā mahi matua e rua: te whakaū i te PVC i te wā tukatuka pāmahana teitei (te whakaputa, te werohanga) me te tiaki i a ia mai i te pirau roa i roto i ngā taiao whakamahinga mutunga.
He aha te PVC Can'Kia Tupu Kore i a Rātou
He rauemi mahi nui te PVC, engari he āhua uaua tōna: te kore pumau o te pāmahana. Ina werahia ki runga ake i te 160°C (he pāmahana paerewa mō te tukatuka), ka pakaru ngā mekameka pūmua o te PVC, ka tukuna te waikawa hauwaiora (HCl) i roto i te tauhohenga tere-ake. Ka hua ake tēnei "whakakorenga hauwaiora" ki te tae ke, te pakarukaru, me te ngaronga o te kaha miihini—he hapa nui mō ngā tono nui pēnei i ngā paipa wai, ngā ngongo hauora rānei.
Ka whakakorea tēnei huringa e ngā whakaū hopi whakarewa mā roto i ngā tikanga matua e toru:
Te Whakakorenga HClKa whakakorea e rātou ngā ngota HCl kino, ka ārai i a rātou kei whakatere i te pirau atu.
Whakakapinga ĀnioraKa whakakapia e rātou ngā ngota chlorine kāore i te pumau i roto i te mekameka polymer ki ngā rōpū carboxylate whakarewa pumau ake, ka whakaroa i te pakaru.
Tautoko Ārai MatewaiHe maha ngā whakatakotoranga e mahi tahi ana me ngā antioxidants hei tinei i ngā rauropi kore utu, he hua o te wera me te pānga o te UV.
Ngā Whakamahinga Matua i roto i te Hanga PVC
Ka tiaho ngā whakaū hopi whakarewa puta noa i te whānuitanga o ngā hua PVC, ia ia e hiahia ana ki te mahi kua whakaritea:
Ngā Painga e Ārahi Ana i te Whakatinanatanga
He aha te mea e tino hiahiatia ai ngā whakaū hopi whakarewa i roto i te tukatuka PVC? Ko ō rātou painga ahurei:
WhānuiHototahitangaKa mahi tahi rātou me ngā mea whakapūmau kirihou, ngā mea whakahinuhinu, me ngā mea whakakī (hei tauira,konupūmā kāponāte), te whakangawari i te whakatakotoranga.
Mahi WhakariteaMā te whakarerekē i ngā ōwehenga whakarewa (hei tauira, teitei akekonutea(mō te ngāwari, he nui ake te konupūmā mō te pakari), ka taea e ngā kaihanga te whakatikatika i te pumau mō ngā hiahia motuhake.
Te Whakatutukitanga o ngā Ture: Konupūmā-konuteaE tutuki ana ngā pūnaha i ngā paerewa ā-ao tino pakari mō te whakapā atu ki te kai, te wai inu, me te iti o te paitini—he mea nui mō te whakawhirinaki o ngā kaihoko.
Te Whai Hua o te UtuHe pakari, he iti ake te utu, ā, he iti ake te pumau ki ērā atu momo kē atu pērā i ngā organotin, ā, he mea tino pai mō te whakaputa nui.
Te Anamata: Te Pumau me te Mahi Tino Pai
I te neke haere o te umanga ki te oranga tonutanga, kei te whanake haere hoki ngā whakaū hopi whakarewa. Ko ngā hanganga konupūmā-konutea, inā koa, kei te whakakapi i ngā whakaū whakarewa taumaha tuku iho (pēnei iārahi(te cadmium rānei) hei whakatutuki i ngā whāinga hoa-taiao. Ko ngā mahi auaha i roto i ngā hopi whakarewa "kakariki"—e whakamahi ana i ngā waikawa ngako whakahou, i ngā kaikawe pirau rānei—kei te whakaiti ake i tō rātou tapuwae taiao me te kore e whakararu i te mahi.
I roto i ngā kupu poto, ehara i te mea he tāpiri noa iho ngā whakapūmau hopi whakarewa—he mea whakahohe noa iho. Ka hurihia e rātou te pūmanawa o te PVC hei pono, kia mau tonu ai te mahi a ngā paipa, ngā kōtaha, me ngā kiriata e whakawhirinakihia ana e tātou. Mō ngā kaihanga e whai ana kia noho ki mua i te mākete whakataetae, ehara i te mea he whakatau hangarau noa iho te whiriwhiri i te whakapūmau hopi whakarewa tika—he whakapau kaha ki te kounga.
Kua rite koe ki te whakapai ake i ō hanganga PVC? Kia hono tātou ki te tūhura me pēhea te whakapai ake i ō hua e ngā otinga whakapūmau hopi whakarewa kua whakaritea.
Wā tuku: Hurae-25-2025