He maha ngā kaihoko kua kōrero mai he mārama te TPU tino mārama i te wā tuatahi i hangaia ai, he aha i kore ai e mārama i muri i te rā kotahi, ā, he rite te tae ki te raihi i muri i ētahi rā? Inaa, he hapa tūturu tō te TPU, arā, ka huri kōwhai haere i te wā. Ka mimiti te TPU i te makuku mai i te hau, ka huri mā, nā te hekenga rānei o ngā tāpiringa i tāpirihia i te wā tukatuka. Ko te take matua he kore e mārama te hinu whakahinuhinu, ā, ko te kōwhai te āhuatanga o te TPU.
He kapia kōwhai te TPU, ā, ka kōwhai te MDI i roto i te ISO i raro i te hihi UV, e tohu ana he āhuatanga kōwhai te TPU. Nō reira, me whakaroa te wā kōwhai o te TPU. Nā, me pēhea te ārai i te kōwhai o te TPU?
Tikanga 1: Ārai
1. Kōwhiria kia whakawhanake i ngā hua pango, kōwhai, pōuri rānei i te tīmatanga o te whakawhanake i ngā hua hou. Ahakoa ka kōwhai ēnei hua TPU, kāore e kitea tō rātou āhua, nō reira, kāore he raruraru o te kōwhai.
2. Āraia te pānga tika o te rā ki te PU. Me matao, me whai hauhautanga hoki te wāhi rokiroki PU, ā, ka taea te takai i te PU ki roto i ngā putea kirihou ka waiho ki tētahi wāhi kāore e pāngia e te rā.
3. Āraia te poke i te wā e whakamahia ana e te ringa. He maha ngā hua PU e poke ana i te wā e whakarōpūhia ana, e whakaorahia ana rānei, ka puta te kōwhai pērā i te werawera tangata me ngā whakarewa rauropi. Nō reira, me aro nui ngā hua PU ki te horoi o te tinana pa, me te whakaiti i te tukanga whakarōpū i te mea ka taea.
Tikanga 2: Te tāpiri i ngā kai
1. Kōwhiria tika ngā rauemi TPU e tutuki ana i ngā whakaritenga ātete UV.
2. Tāpirihia ngā matū ārai-kōwhai. Hei whakarei ake i te kaha ārai-kōwhai o ngā hua PU, he maha ngā wā e tika ana kia tāpirihia he matū ārai-kōwhai motuhake ki ngā rauemi mata. Heoi, he nui te utu o ngā matū ārai-kōwhai, ā, me whakaaro hoki tātou ki ō rātou painga ōhanga ina whakamahia ana. Hei tauira, kāore tō tātou tinana pango e pāngia e te kōwhai, nō reira ka taea e tātou te whakamahi i ngā rauemi mata kāore e ārai-kōwhai he iti ake te utu me te kore he matū ārai-kōwhai. I te mea he tāpiri rauemi mata ngā matū ārai-kōwhai kua tāpirihia ki te wāhanga A, me whakaoho tātou i te wā e whakaranu ana kia tutuki ai te tohatoha ōrite me te pānga ārai-kōwhai, ki te kore ka puta te kōwhai ā-rohe.
3. Rehuhia te peita ātete kōwhai. E rua ngā momo rehu peita, ko tētahi he rehu pokepokea ai, ko tētahi he rehu pokepokea ai. Mā te rehu i te peita ātete kōwhai ka hanga he paparanga tiaki ki runga i te mata o ngā hua PU kua oti, ka ārai i te parahanga me te kōwhai i puta mai i te pā o te kiri PU ki te āhuarangi. E whakamahia whānuitia ana tēnei momo i tēnei wā.
Tikanga 3: Whakakapinga rauemi
Ko te nuinga o ngā TPU he TPU kakara, kei roto ngā mowhiti benzene, ā, ka taea te mimiti ngāwari i te mārama ultraviolet, ka puta te kōwhai. Koinei te take matua o te kōwhai o ngā hua TPU. Nō reira, e whakaaro ana te hunga o te umanga ko te ārai ultraviolet, te ārai kōwhai, te ārai koroheketanga me te ārai ultraviolet o te TPU he ariā kotahi. He maha ngā kaihanga TPU kua whakawhanake i ngā TPU aliphatic hou hei whakaoti i tēnei raruraru. Kāore he mowhiti benzene i roto i ngā ngota TPU aliphatic, ā, he pai te pumau o te whakaahua, e kore rawa e kōwhai.
Heoi anō, kei a TPU aliphatic ōna ngoikoretanga i ēnei rā:
1. He whaiti te whānuitanga o te pakeke, i waenga i te 80A-95a
2. He tino ātaahua te tukanga tukatuka, ā, he ngāwari hoki ki te tukatuka
3. Kāore i te mārama, ka taea anake te whakatutuki i te mārama o te 1-2mm. He ahua kohu te hua matotoru.
Wā tuku: Whiringa-ā-rangi 25-2024