Ngā Pūrongo

I roto i ngā kirihou hangarau, kotahi te rauemi e tū ana mō tōna ātete pai ki te kakahu, te ātete pānga, me ngā āhuatanga whakahinuhinu-ake, e waiho ana hei otinga tino pai mō ngā āhuatanga mahi uaua. Ko te polyethylene taumaha-tino teitei (UHMWPE) kua hurihia hei āhua pepa, kua whakawhānui ake i tōna whānuitanga tono ki ngā taumata kāore i kitea i mua, e whai wāhi nui ana ki ngā mea katoa mai i ngā pūnaha tuku ahumahi taumaha ki ngā raina tukatuka kai.

I. Te Mārama ki te UHMWPE: He aha te "Taumaha Ngota Tino Teitei"?

Ehara te UHMWPE i te polyethylene noa. Ko tōna uho kei roto i tōna "taumaha ngota tino teitei"—he roa ake ōna mekameka ngota i ngā mekameka polyethylene matotoru noa (HDPE), neke atu i te 1.5 miriona te nuinga. Ka herea ēnei mekameka ngota, ka hanga he hanganga ngota tino pakari e hoatu ana ki te rauemi ōna āhuatanga ā-tinana whakamiharo.

Ka hangaia te pepa UHMWPE mai i tēnei rauemi tino pai mā te mahi sintering, te pēhi, te extrusion rānei. Ko tōna matotoru kei waenga i te torutoru mirimita ki te rau mirimita, e tutuki ai ngā hiahia o ngā momo tono.

II. E rima ngā Āhuatanga Tino Pai oRau UHMWPE

1. Te Ātete Tino Kaha ki te Paka: Koinei te āhuatanga tino kitea o te UHMWPE. He nui ake tōna ātete ki te paka i te maha o ngā konganuku (pērā i te maitai waro me te maitai kore waikura), 4-5 ngā wā i te nairona (PA), ā, 3 ngā wā i te polyoxymethylene (POM). I roto i ngā taiao paka, koia tonu te "Kīngi o ngā Kirihou."

2. Ātete Pānga Tino Nui: Ahakoa i ngā pāmahana iti (-40°C, iti iho rānei), ka mau tonu tōna kaha pānga tino teitei, ka mimiti pai i ngā wiri me ngā ru, me te kore e pakaru, e pakaru rānei.

3. Ngā Āhuatanga Pai o te Whakahinuhinu-ā-Whaiaro me te Kore-Piri: He tino iti te tauwehenga o te waku, he rite ki te wai, ā, he āhua kore-piri. Mā tēnei ka whakaitihia te ātete ina paheke ngā rauemi ki runga i tōna mata, ka ārai i te piri, ā, ka tino whakaitihia te pakaru me te haehae o ngā taputapu me ngā rauemi.

4. Ātete Matū: He tino ātete ki te waikura ki te nuinga o ngā otinga waikawa, kawakore, me te tote, ā, he pai mō te whakamahi i roto i ngā taiao waikura pēnei i te tukatuka matū.

6. He paitini, ā, kāore e paitini: E tutuki ana i ngā whakaritenga a te US FDA me te USDA, ka taea te hono tika ki te kai me te rongoā, ā, e whakamahia whānuitia ana i roto i ngā ahumahi tukatuka kai me te hauora. I taua wā anō, he tino iti te mimiti wai, ā, he uaua ki te whakaputa huakita.

IV. He aha i whiriwhiri aiRau UHMWPE? — Te Whakataurite ki te Mea Whakarewa me ētahi atu Kirihou Hangarau

1. Ki te whakataurite ki te mea whakarewa (hei tauira, te maitai waro, te maitai kore waikura):

Ātete Atu i te Kakahu: He roa ake tōna roa i tērā o te mea whakarewa i raro i ngā āhuatanga kakahu taratara.
Māmā ake: Ko tōna mātotoru he 0.93-0.94 karamu/cm³ noa iho, 1/7 o te mātotoru o te maitai, kia māmā ake ai te tāuta me te kawe.

Kore haruru: He ata mahi, e whakakore ana i te haruru kino o te waku whakarewa.

Ātete ki te Waikura: He ātete ki te waikura, ā, he ātete hoki ki ngā matū.

2. Ki te whakataurite ki ētahi atu kirihou hangarau (hei tauira, te nairona, te polyoxymethylene):

Ātete Nui Atu i te Kakahu: He maha ngā wā ka nui ake tōna ātete kakahu.

He iti ake te waku: He pai ake ōna āhuatanga whakahinuhinu-ake.

Ātete Atu ki te Pānga: Ka tino kitea ōna painga i ngā pāmahana iti.

Rau UHMWPEhe tino kaha, he pukumahi hoki i roto i te ao rauemi ahumahi hou. Ahakoa ehara i te mea he pakari pērā i te konganuku, ko tōna ātete ki te kakahu me te mahi whānui e kore e taea te whakakapi i a ia hei kaitākaro nui i roto i te whawhai ki te kakahu, te whakaiti i te whakapaunga pūngao, me te whakapai ake i te whai huatanga. Mai i ngā maina ki ngā kīhini, mai i ngā wheketere ki ngā papa tākaro, ko te kaha o tēnei pepa "kirihou tino" ka tiaki i te mahi roa o ngā taputapu maha, ka waiho hei "kaitiaki ātete ki te kakahu" me te "kaitiaki rere" i roto i te ao ahumahi.