I roto i te ngaru o te auahatanga e horapa ana i roto i te umanga hanga hu o te ao, kei te ārahi puku tetahi rauemi e whakakotahi ana i te pakari o te rapa me te kaha tukatuka pai o te kirihou i tētahi panonitanga nui—ko te ethylene-vinyl acetate copolymer, e mōhiotia ana ko te EVA. Hei poutokomanawa o te hangarau rauemi hu hou, ko te EVA, me tōna hanganga pahuka porous ahurei, ngā āhuatanga whakangāwari māmā, me te kaha urutau hoahoa, kei te hanga anō i ngā rohe mahi me te wheako mau hu—mai i ngā taputapu hākinakina ngaio ki ngā hu ahua o ia rā.

Ngā Āhuatanga Matua: Ngā Huarahi Hou o te Hangarau i roto i te Hoahoa Hu

Ko ngā painga matua o te EVA i roto i te umanga hu e ahu mai ana i tōna hanganga iti me ōna āhuatanga ā-tinana ka taea te whakarite. Mā te whakahaere i te tukanga pahuka, ka taea te whakarite ngāwari i te matotoru o te rauemi i roto i te awhe o te 0.03–0.25g/cm³, e whakarato ana i ngā otinga kua whakaritea mō ngā momo hu rerekē:

1.Whakamarumarutanga Tino Pai:Ka taea e ngā takahanga waenga EVA tino ngāwari te whakatutuki i te reiti whakahoki pūngao o te 55%–65%, ka mimiti pai i ngā kaha pānga i te wā e neke ana, me te whakaiti i te kawenga hononga mā te 30%.

2.Wheako Māmā:Tae atu ki te 40%–50% te mama ake i ngā kapu rapa tuku iho, e whakarei ake ana i te whakamarie i te wā e mau ana mō te wā roa, me te tere hoki o te hākinakina.

3.Te pakari me te pumau:He tino pai te ātete o te hanganga pūtau-kati ki te whakarerekētanga pēhanga (<10%), kia mau tonu ai te āhua taketake o te kapu ahakoa te whakamahinga roa.

4.Te Urutau ki te Taiao: Ka mau tonu te mahi a ngā whakatakotoranga ātete-huarere i ngā awhe pāmahana tino kino mai i te –40°C ki te 70°C, ā, ka urutau ki ngā āhuarangi rerekē o te ao.

Auahatanga Hangarau: Mai i te Huka Taketake ki te Urupare Atamai

Kei te akiakihia e ngā taiwhanga rauemi matua o te ao te hangarau EVA ki tōna whakatupuranga tuatoru:

1.Hangarau Matotoru Rōrahi:Ka tutuki i ngā rohe mātotoru maha i roto i te kapu hu kotahi (hei tauira, he pikinga teitei i te waewae o mua, he tino whakamarie i te rekereke) kia tutuki ai ngā hiahia koiora-ā-tinana.

2.Te Huka Wai Tino Hiranga:E whakamahi ana i te CO₂, i te N₂ rānei hei whakakapi i ngā matū pupuhi, e whakahaere ana i te diameter o ngā pore ki te 50–200 micrometers, ā, e whakapai ake ana i te ōritetanga mā te 40%.

3.Ngā Pūnaha Whakakotahi Mahi:Whakauruhia ngā matūriki huakita (ngā katote hiriwa/ngā waikura konutea), ngā kāpūkara iti whakarerekē-āhua (te awhe whakahaere pāmahana 18–28°C), me ngā tae arotau atamai.

4.Auahatanga Tauwhiro:Ka whakaitihia e te EVA koiora (i ahu mai i te etanoru tō) te tapuwae waro mā te 45%, ā, ka eke ngā pūnaha hangarua porowhita kati ki te neke atu i te 70% o ngā reiti whakamahi anō rauemi.

Ngā Whakatakotoranga Taupānga: He Huringa Mahi puta noa i ngā Kāwai Hu Katoa

Ngā Hu Hākinakina Ngaio:

Hu Reihi: Ko ngā takahanga waenga EVA pahuka supercritical me te matotoru o te 0.12–0.15 g/cm³ ka eke ki ngā reiti whakahoki pūngao >80%.

Hu Poitūkohu: Ka whakapai ake ngā hanganga waenga kapu maha-paparanga i te whakaiti pānga mā te 35%, me te modulus tautoko taha e eke ana ki te 25 MPa.

Hu Ara: Ko ngā whakatakotoranga ihirangi VA teitei (28%–33%) ka mau tonu te ngāwari i te –20°C, ka pai ake te mau i runga i ngā mata pahekeheke.

Te Āhua Noho me te Hu:

Hu Tūturu: Ka tukuna e te hangarau pahuka moroiti he wheako pā "rite ki te kapua", ka arotau i te tohatoha pehanga mā te 22% i roto i te mau tonu mō ngā haora 24.

Hu Pakihi: Ko ngā pūnaha urunga kore e kitea me ngā paparanga EVA tino angiangi 3mm e tautoko ana i te kōpiko o te waewae mō te rā katoa.

Hu Tamariki: Ko ngā takahanga roto hihiri e aro ana ki te tipu me ngā hanganga atamai e aro ana ki te pāmahana ka urutau ki ngā waewae e tipu haere ana o ngā tamariki.

Ngā Whakapai Ake o te Hanga: He Tauira Hou mō te Hanga Mamati

Kei te hurihia e ngā wheketere atamai te hanga hu EVA:

Te Hanga Kōpeketanga 4D:Ka whakarite i te kiato rohe i runga i te hikoi raraunga nui, ka whakaiti i ngā huringa whakaputa ki te 90 hēkona mō ia takirua.

Hangarau Pūwero-iti o te Reera:Ka whakahaere tika i te āheinga manawa o te hanganga pahuka, ka tutuki ai te mātotorutanga o ngā pore moroiti o te 5,000–8,000 ia cm².

Te Whai Aroturukitanga o te Poraka Poraka:Ka aro turuki i te tapuwae waro puta noa i te huringa ora katoa, mai i ngā rauemi mata e ahu mai ana i te koiora ki ngā hua mutunga ka taea te hangarua.

He Ao Tūroa: Te Pūtake o te Hu Kakariki

Kua whakatūria kētia e ngā waitohu ahumahi matua ngā tauira ōhanga porowhita EVA:

I tutuki i te kaupapa Futurecraft.Loop a Adidas ngā hu oma EVA ka taea te hangarua 100%.

Ka hurihia e te kaupapa Grind a Nike te EVA hangarua hei rauemi mata hākinakina, e tukatukahia ana neke atu i te 30 miriona takirua ia tau.

Mā te hangarau wetewete matū auaha ka eke te tere whakaora o te monomer EVA ki te 85%, ka toru te uara ina whakaritea ki te hangarua ā-tinana tuku iho.