I nā makahiki i hala iho nei, ua hoʻonui mālie ʻia ka hoʻohana ʻana i nā plastik ʻenekinia kūikawā mai ka pūʻali koa a me ka aerospace i nā kahua kīwila hou aʻe, e like me nā kaʻa, nā lako hana, a me nā mea kūʻai aku kiʻekiʻe. Ma waena o lākou, polyphenylene sulfide (PPS) a me polyetheretherketone (PEEK) ʻelua ʻano o nā plastics ʻenekinia kūikawā me ka hoʻomohala wikiwiki a me ka laulā noi.
ʻOi aku ka PEEK ma mua o ka PPS ma ke ʻano o ka ikaika, paʻakikī, a me ka mahana hana kiʻekiʻe. Ma ke ʻano o ka pale wela kiʻekiʻe, ʻoi aku ka nui o ka pale wela o PEEK ma kahi o 50 ° C ma mua o ka PPS. Ma ka ʻaoʻao ʻē aʻe, ʻoi aku ka maikaʻi o ka uku kumukūʻai a me ka hana ʻoi aku ka maikaʻi o ka PPS e hoʻohana nui ʻia.
Loaʻa iā PPS nā pono hana penei:
(1) Pahu lapalapa o loko
Different from PC and PA, PPS pure resin and its glass fiber/mineral powder filled composites can easily achieve V-0 @ 0.8mm or even thinner thickness V-0 flame retardant without adding any flame retardant level. Although PC and PA have cheaper prices and better mechanical strength (especially impact strength) than PPS, the cost of PC and PA composites with halogen-free flame retardant formulations (V-0@0.8mm level) is higher than that of PPS. It will rise sharply, and in many cases even higher than PPS materials with the same mechanical strength.
(2) Ka nui loa o ka wai
Ma ke kahua noi o ka uhi puke, ʻoi aku ka maopopo o kēia pono ma mua o ka PC. ʻAʻole e hoʻopilikia wale ka nui o nā mea hoʻohui i ka wai o ka mea a me ka pilikia o ka hoʻoponopono ʻana, akā e hoʻopilikia pū kekahi e like me nā fiber floating surface, warpage koʻikoʻi, a me nā waiwai mechanical maikaʻi ʻole. No ka PPS semi-crystalline, ʻo kona kahe kiʻekiʻe loa e hiki ai i ka hoʻopiha ʻana o ke aniani ke maʻalahi ma mua o 50%. I ka manawa like, i ke kaʻina hana o ke kiʻekiʻe wela hehee blending a me ka extrusion, ka haʻahaʻa viscosity o PPS hoʻohālikelike ʻia me PC hiki ke hana i nā fibers Glass e hana i nā pae haʻahaʻa o ka shear a me ka extrusion, ka hopena i ka lōʻihi o ka hoʻopaʻa ʻana i ka ʻatikala hope loa. hoʻonui hou i ka modulus.
(3) Ka hoʻoheheʻe wai haʻahaʻa loa
Loaʻa kēia pono no PA. Ma ke ʻano o ka wai, hoʻohālikelike ʻia ka PA a me ka PPS piha piha; a no nā waiwai mechanical, ʻoi aku ka mana o nā composites PA me ka nui hoʻopiha like. ʻO ka hopena, ʻoi aku ka haʻahaʻa o ka hapa o nā huahana PPS ma muli o ka deformation absorption wai ma mua o nā huahana PA ma lalo o nā kūlana like.
(4) ʻAno metala kū hoʻokahi a ʻoi aku ka paʻakikī o ka ʻili
Ma o ka hui pū ʻana o nā ʻāpana kūikawā a me ka mahana wela kūpono, e hoʻopuka pū ana nā ʻāpana hoʻoheheʻe PPS i kahi kani e like me ke kuʻi ʻana i ka metala ma lalo o ka paʻi ʻana o nā lima kanaka, a e maʻalahi ka ʻili e like me ke aniani, me ka luster metala.
Loaʻa iā PEEK nā waiwai koʻikoʻi:
(1) Kūleʻa wela kiʻekiʻe loa.
Hiki ke hoʻohana no ka manawa lōʻihi ma 250 ° C, hiki i ka mahana ke hiki i 300 ° C i ka manawa koke, a ʻaʻole hiki ke decompose i ka manawa pōkole ma 400 ° C.
(2) ʻO nā waiwai mechanical maikaʻi loa a me ke kūpaʻa dimensional.
Hiki i ka PEEK ke mālama i ka ikaika kiʻekiʻe ma ka wela kiʻekiʻe. ʻO ka ikaika kulou ma 200 ° C hiki ke hiki i 24 MPa, a ʻo ka ikaika kulou a me ka ikaika compressive ma 250 ° C hiki ke hiki i 12-13 MPa. He kūpono loa ia no ka hana ʻana i nā huahana hoʻomau i ka wela kiʻekiʻe. nā mea hana. Loaʻa i ka PEEK ka rigidity kiʻekiʻe, ka paʻa o ka dimensional maikaʻi a me ka coefficient haʻahaʻa o ka hoʻonui laina, kahi kokoke loa i ka alumini metala. Eia kekahi, ʻoi aku ka maikaʻi o ka PEEK, hiki ke pale i ke koʻikoʻi nui i ka wā lawelawe, a ʻaʻole ia e hoʻonui nui ʻia ma muli o ka lōʻihi o ka manawa.
(3) Kūʻē kemika maikaʻi loa.
Paipai maikaʻi ʻo PEEK i ka hapa nui o nā kemika, ʻoiai ma nā wela kiʻekiʻe, me ke kūpaʻa ʻino e like me ke kila nickel. Ma lalo o nā kūlana maʻamau, ʻo ka mea hiki ke hoʻopau i ka PEEK ʻo ia ka sulfuric acid concentrated.
(4) Ke kūpaʻa hydrolysis maikaʻi.
Kū'ē i ka pōʻino kemika e ka wai a i ʻole ka mahu wai kaomi kiʻekiʻe. Ma lalo o ke kūlana o ka wela kiʻekiʻe a me ke kaomi kiʻekiʻe, hiki i nā mea PEEK ke hana mau i ka wai a mālama mau i nā waiwai mechanical maikaʻi. E like me ka hoʻomau mau ʻana i ka wai ma 100 ° C no 200 mau lā, ʻaʻole i loli ka ikaika.
(5) Maikaʻi ka hana pale ahi.
Hiki iā ia ke hōʻea i ka helu UL 94 V-0, hoʻopau iā ia iho, a hoʻokuʻu i ka uahi a me nā kinoea ʻona ma lalo o nā kūlana lapalapa.
(6) Hana uila maikaʻi.
Mālama ʻo PEEK i nā waiwai uila ma kahi ākea ākea a me ka pae wela.
(7) Ke kū'ē i ka radiation ikaika.
Loaʻa i ka PEEK kahi hana kemika paʻa, a hiki ke hana maikaʻi nā ʻāpana PEEK ma lalo o nā kiʻekiʻe o ka radiation ionizing.
(8) Paʻakikī maikaʻi.
ʻO ka pale ʻana i ka luhi i ke koʻikoʻi ʻoi aku ka maikaʻi o nā plastics āpau a ua hoʻohālikelike ʻia me nā alloys.
(9) ʻO ka hakakā maikaʻi a me ke kūpaʻa ʻaʻahu.
Mālama ʻia ka pale ʻaʻahu kiʻekiʻe a me ka coefficient haʻahaʻa o ka friction ma 250 ° C.
(10) Hana hana maikaʻi.
ʻO ka extrusion maʻalahi a me ka hoʻoheheʻe ʻana, a me ka hoʻoheheʻe kiʻekiʻe.
Ka manawa hoʻouna: 01-09-22