A cikin 'yan shekarun nan, aikace-aikacen robobin injiniya na musamman ya haɓaka sannu a hankali daga filayen soja da na sararin samaniya da suka gabata zuwa ƙarin filayen farar hula, kamar motoci, kera kayan aiki, da manyan kayan masarufi.Daga cikin su, polyphenylene sulfide (PPS) da polyethertherketone (PEEK) nau'ikan robobi ne na injiniya na musamman tare da saurin haɓakawa da fa'idar aikace-aikace.
PEEK ya fi PPS girma ta fuskar ƙarfi, ƙarfi, da matsakaicin zafin aiki.Dangane da babban juriya na zafin jiki, juriyar zafin PEEK yana da kusan 50°C sama da na PPS.A wani bangaren kuma, fa'idar farashin farashi da ingantacciyar aikin sarrafa PPS ya sa ake amfani da shi sosai.
PPS yana da fa'idodi masu zuwa:
(1) Mai hana harshen wuta
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) Matsakaicin yawan ruwa
A cikin filin aikace-aikacen murfin littafin rubutu, wannan fa'idar ta fi bayyane fiye da na PC.Ƙarin ƙari mafi girma ba wai kawai zai yi tasiri sosai ga ruwa na kayan ba kuma yana haifar da matsalolin sarrafawa, amma har ma yana haifar da matsaloli irin su filaye masu iyo a saman, babban warpage, da ƙarancin kayan inji.Don Semi-crystalline PPS, yawan yawan ruwan sa yana ba da damar cika fiber gilashin sauƙi fiye da 50%.A lokaci guda, a cikin aiwatar da babban zafin jiki na narkewa da kuma extrusion, ƙananan danko na PPS idan aka kwatanta da PC na iya sa gilashin gilashin ya zama ƙananan matakan karfi da extrusion, wanda ya haifar da tsayin tsayin tsayin daka a cikin labarin da aka ƙera na ƙarshe, wanda ya haifar da wani lokaci mai tsawo. yana ƙara haɓakawa.
(3) Matsanancin-ƙananan sha ruwa
Wannan fa'idar shine yafi ga PA.Dangane da ruwa, cike da PA da PPS suna kama da juna;kuma don kaddarorin inji, abubuwan haɗin PA tare da adadin cika iri ɗaya sun fi rinjaye.Sakamakon haka shine ƙarancin ƙarancin samfuran PPS saboda nakasar sha ruwa yayi ƙasa da na samfuran PA a ƙarƙashin yanayi iri ɗaya.
(4) Na musamman karfe rubutu da mafi girma surface taurin
Ta hanyar haɗin gyare-gyare na musamman da madaidaicin zafin jiki, sassan alluran PPS kuma za su fitar da sauti mai kama da bugun ƙarfe a ƙarƙashin taɓa hannun ɗan adam, kuma saman zai kasance mai santsi kamar madubi, tare da haske na ƙarfe.
PEEK yana da kyawawan kaddarorin masu zuwa:
(1) Matsananciyar juriya mai zafi.
Ana iya amfani da shi na dogon lokaci a zafin jiki na 250 ° C, zafin jiki zai iya kaiwa 300 ° C a nan take, kuma da wuya ya rushe cikin ɗan gajeren lokaci a 400 ° C.
(2) Kyakkyawan kaddarorin inji da kwanciyar hankali mai girma.
PEEK na iya kiyaye babban ƙarfi a babban zafin jiki.Ƙarfin lanƙwasawa a 200 ° C har yanzu yana iya kaiwa 24 MPa, kuma ƙarfin lanƙwasawa da ƙarfin matsawa a 250 ° C na iya kaiwa 12-13 MPa.Ya dace musamman don kera samfuran ci gaba a babban zafin jiki.kayan aikin aiki.PEEK yana da tsayin daka, kyakkyawan kwanciyar hankali mai kyau da ƙarancin haɓakar faɗaɗa layin layi, wanda ke kusa da aluminum na ƙarfe.Bugu da ƙari, PEEK kuma yana da kyakkyawar juriya mai raɗaɗi, zai iya jure wa babban damuwa yayin lokacin sabis, kuma ba zai haifar da haɓaka mai mahimmanci ba saboda tsawaita lokaci.
(3) Kyakkyawan juriya na sinadarai.
PEEK yana tsayayya da yawancin sinadarai da kyau, ko da a yanayin zafi mai yawa, tare da juriya na lalata kama da ƙarfe na nickel.A karkashin yanayi na al'ada, kawai abin da zai iya narkar da PEEK shine tattarawar sulfuric acid.
(4) Kyakkyawan juriya na hydrolysis.
Mai jurewa lalacewar sinadarai ta ruwa ko tururin ruwa mai matsa lamba.A ƙarƙashin yanayin zafi mai zafi da matsanancin matsin lamba, abubuwan PEEK na iya yin aiki gabaɗaya a cikin yanayin ruwa kuma har yanzu suna kula da kyawawan kayan injin.Kamar ci gaba da nutsewa cikin ruwa a 100 ° C na kwanaki 200, ƙarfin ya kasance kusan baya canzawa.
(5) Kyakkyawan aiki mai hana wuta.
Yana iya kaiwa darajar UL 94 V-0, yana kashe kansa, kuma yana fitar da ƙarancin hayaki da iskar gas mai guba a ƙarƙashin yanayin wuta.
(6) Kyakkyawan aikin lantarki.
PEEK yana kula da kaddarorin lantarki sama da faɗin mita da kewayon zafin jiki.
(7) Ƙarfin juriya na radiation.
PEEK yana da ingantaccen tsarin sinadarai, kuma sassan PEEK na iya aiki da kyau a ƙarƙashin manyan allurai na ionizing radiation.
(8) Kyakkyawan tauri.
Juriya ga gajiyawa ga matsananciyar damuwa shine mafi kyawun duk robobi kuma yana kwatankwacin alloys.
(9) Kyakkyawan juriya da juriya.
Babban juriya na lalacewa da ƙarancin ƙima na gogayya ana kiyaye su a 250 ° C.
(10) Kyakkyawan aiki mai kyau.
Easy extrusion da allura gyare-gyare, da kuma high gyare-gyare yadda ya dace.
Lokacin aikawa: 01-09-22