Polyether ether ketone (PEEK) Pono a me nā noi

ʻO ka polyether ether ketone (PEEK) he polymer thermoplastic kala ʻole i loko o ka ʻohana polyaryletherketone (PAEK), i hoʻohana ʻia i nā noi ʻenekinia.Ua hoʻolauna mua ʻia e Victrex PLC, a laila Imperial Chemical Industries (ICI) i nā makahiki 1980 mua.

Nā waiwai:ʻO PEEK kahi thermoplastic semicrystalline me nā waiwai kūʻē mechanical a me nā kemika i mālama ʻia i nā wela kiʻekiʻe.ʻO nā kūlana hana i hoʻohana ʻia no ka hoʻoheheʻe ʻana i ka PEEK hiki ke hoʻololi i ka crystallinity a no laila nā waiwai mechanical.ʻO ka modulus o ka Young he 3.6 GPa a me kona ikaika tensile 90 a 100 MPa.[5]Loaʻa i ka PEEK kahi mahana hoʻololi aniani ma kahi o 143 °C (289 °F) a heheʻe ma kahi o 343 °C (662 °F).Loaʻa i kekahi mau māka i ka mahana hana pono a hiki i 250 °C (482 °F).Hoʻonui ʻia ka conductivity thermal kokoke i ka laina me ka mahana ma waena o ka wela lumi a me ka mahana solidus.He kūpaʻa loa ia i ka hoʻohaʻahaʻa ʻana i ka wela, a me ka hoʻouka ʻana e nā kaiaola a me ka wai.Hoʻouka ʻia e nā halogens a me nā waikawa Bronsted a me Lewis ikaika, a me kekahi mau mea halogenated a me aliphatic hydrocarbons i nā wela kiʻekiʻe.Hiki ke hoʻoheheʻe ʻia i loko o ka ʻakika sulfuric concentrated ma ka lumi wela, ʻoiai hiki i ka hoʻoheheʻe ʻana ke lōʻihi loa ke ʻole ka polymer i ke ʻano me kahi ratio kiʻekiʻe o ka ʻili-a-a-ka-volume, e like me ka pauda maikaʻi a i ʻole ke kiʻiʻoniʻoni lahilahi.He kūʻē kiʻekiʻe i ka biodegradation.

Nā noi:Ma muli o kona ikaika, hoʻohana ʻia ʻo PEEK e hana i nā mea i hoʻohana ʻia i nā noi koi, e like me nā bearings, nā ʻāpana piston, nā pāpaʻi, nā kolamu chromatography wai kiʻekiʻe, nā kīwaha compressor plate, a me ka insulation cable.ʻO ia kekahi o nā plastics liʻiliʻi i kūpono me nā noi vacuum ultra-high.Manaʻo ʻia ʻo PEEK he biomaterial kiʻekiʻe i hoʻohana ʻia i nā implants lapaʻau, e laʻa, hoʻohana me kahi kiʻi kiʻi kiʻi magnetic resonance kiʻekiʻe (MRI), no ka hana ʻana i kahi iwi poʻo pani i nā noi neurosurgical.

Ke ʻimi nei ʻo PEEK i ka hoʻohana nui ʻana i nā mea hana spinal fusion a me nā lāʻau hoʻoikaika.Hoʻohana nui ʻia ia i ka ʻoihana aerospace, automotive, a me nā ʻoihana kemika.Hoʻohana mau ʻia nā sila PEEK a me nā manifold i nā noi wai.Hana maikaʻi ʻo PEEK i nā noi i maʻa mau nā wela kiʻekiʻe (a hiki i 500 °F/260 °C).