Kwiminyaka yakutshanje, ukusetyenziswa kweeplastiki ezikhethekileyo zobunjineli kuye kwanda ngokuthe ngcembe ukusuka kwindawo yangaphambili yomkhosi kunye ne-aerospace ukuya kwiindawo ezingakumbi zabahlali, ezinje ngeemoto, ukwenziwa kwezixhobo, kunye nempahla yabathengi ephezulu.Phakathi kwazo, i-polyphenylene sulfide (PPS) kunye ne-polyetheretherketone (PEEK) ziindidi ezimbini zeeplastiki zobunjineli ezikhethekileyo ezinophuhliso olukhawulezayo kunye noluhlu olubanzi lwesicelo.
I-PEEK iphezulu kune-PPS ngokwamandla, ukuqina, kunye nobushushu obuphezulu bokusebenza.Ngokubhekiselele ekuxhathiseni ubushushu obuphezulu, ukumelana nobushushu be-PEEK kumalunga ne-50°C ngaphezulu kwe-PPS.Kwelinye icala, inzuzo yeendleko ezicacileyo kunye nokusebenza ngcono kwePPS kuyenza isetyenziswe ngokubanzi.
I-PPS inezi nzuzo zilandelayo:
(1) Isithinteli somlilo sangaphakathi
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) Ubuninzi bemali obuphezulu
Kwintsimi yesicelo sekhava yencwadana, le nzuzo ibonakala ngakumbi kunePC.Isixa esiphezulu songezelelo asiyi kuchaphazela ngokunzulu kuphela ubumanzi bemathiriyeli kwaye ibangele ubunzima bokulungisa, kodwa kwakhona ibangele iingxaki ezinjengeentsinga ezidada phezu komhlaba, i-warpage enzulu, kunye neepropathi ezibuthathaka zoomatshini.Kwi-PPS ye-semi-crystalline, i-fluidity ephezulu kakhulu ivumela ukugcwaliswa kwefiber yeglasi ukuba kudlule ngokulula kwi-50%.Kwangaxeshanye, kwinkqubo yokudityaniswa kobushushu obuphezulu kunye nokuncibilika, i-viscosity esezantsi ye-PPS xa kuthelekiswa nePC inokwenza imicu yeGlasi ingene kumanqanaba asezantsi okucheba kunye nokukhutshwa, okukhokelela kubude obude bokugcinwa kwinqaku lokugqibela elibunjiweyo. kwandisa ngakumbi imodyuli.
(3) Ukufunxwa kwamanzi asezantsi kakhulu
Olu ncedo ikakhulu lwe-PA.Ngokubhekiselele kwi-fluidity, i-PA kunye ne-PPS ezaliswe kakhulu iyathelekiseka;kunye neepropathi zoomatshini, ii-PA composite ezinexabiso elifanayo lokuzalisa zinamandla ngakumbi.Isiphumo kukuba izinga lesiphako seemveliso ze-PPS ngenxa ye-deformation yokufunxa amanzi iphantsi kakhulu kuneemveliso ze-PA phantsi kweemeko ezifanayo.
(4) Ubume besinyithi obuyingqayizivele kunye nobunzima obuphezulu bomphezulu
Ngokudityaniswa kokubumba okukhethekileyo kunye nobushushu obufanelekileyo bokubumba, iindawo zokubumba inaliti ye-PPS ziya kuphinda zikhuphe isandi esifana nokubetha intsimbi phantsi kokubamba kwezandla zomntu, kwaye umphezulu uya kuba mtyibilizi njengesipili, kunye nokucwebezela kwesinyithi.
I-PEEK ineempawu ezilandelayo ezibalaseleyo:
(1) Ukumelana nobushushu obuphezulu kakhulu.
Ingasetyenziswa ixesha elide kuma 250°C, iqondo lobushushu linokufikelela kuma 300°C ngephanyazo, kwaye ayiboli ngexesha elifutshane kuma 400°C.
(2) Iipropati ezigqwesileyo zomatshini kunye nokuzinza komda.
I-PEEK inokugcina amandla aphezulu kwiqondo lokushisa eliphezulu.Amandla okugoba kwi-200 ° C asenokufikelela kwi-24 MPa, kwaye amandla okugoba kunye namandla oxinzelelo kwi-250 ° C anokufikelela kwi-12-13 MPa.Kufanelekile ngokukhethekileyo ukuvelisa iimveliso eziqhubekayo kwiqondo lokushisa eliphezulu.amacandelo asebenzayo.I-PEEK inokuqina okuphezulu, ukuzinza okuhle kwe-dimensional kunye ne-coefficient ephantsi yokwandiswa komgca, esondele kakhulu kwi-aluminium yensimbi.Ukongeza, i-PEEK ikwanayo nokumelana nokunyuka kakuhle, inokumelana noxinzelelo olukhulu ngexesha lenkonzo, kwaye ayiyi kubangela ukwandiswa okukhulu ngenxa yokwandiswa kwexesha.
(3) Ukuchasana kweekhemikhali okugqwesileyo.
I-PEEK ixhathisa iikhemikhali ezininzi kakuhle, nakwiqondo lokushisa eliphezulu, kunye nokumelana nokubola okufana nentsimbi ye-nickel.Ngaphantsi kweemeko eziqhelekileyo, into kuphela enokuyichitha i-PEEK igxininiswe i-sulfuric acid.
(4) Ukuxhathisa okulungileyo kwe-hydrolysis.
Ukumelana nomonakalo weekhemikhali ngamanzi okanye umphunga wamanzi woxinzelelo oluphezulu.Ngaphantsi kwemeko yokushisa okuphezulu kunye noxinzelelo oluphezulu, amacandelo e-PEEK angasebenza ngokuqhubekayo kwindawo yamanzi kwaye agcine iimpawu ezintle zoomatshini.Njengokuntywiliselwa ngokuqhubekayo emanzini kwi-100 ° C iintsuku ezingama-200, amandla ahlala engatshintshi.
(5) Ukusebenza kakuhle kwedangatye.
Inokufikelela kwinqanaba le-UL 94 V-0, iyazicima, kwaye ikhupha umsi omncinci kunye neegesi ezinetyhefu phantsi kweemeko zomlilo.
(6) Ukusebenza kakuhle kombane.
I-PEEK igcina iipropathi zombane kwi-frequency ebanzi kunye noluhlu lobushushu.
(7) Ukuxhathisa okunamandla kwimitha.
I-PEEK inokwakheka kweekhemikhali ezinzile kakhulu, kwaye iinxalenye ze-PEEK zinokusebenza kakuhle phantsi kweedosi eziphezulu zemitha ye-ionizing.
(8) Ukuqina okuhle.
Ukumelana nokudinwa kokutshintshana koxinzelelo yeyona nto igqwesileyo kuzo zonke iiplastiki kwaye ifaniswa nealloys.
(9) Ukungqubana okugqwesileyo kunye nokumelana nokunxiba.
Ukumelana nokunxiba okuphezulu kunye ne-coefficient ephantsi ye-friction igcinwa kwi-250 ° C.
(10) Ukusebenza kakuhle kokusebenza.
I-extrusion elula kunye nenaliti yokubumba, kunye nokusebenza kakuhle kokubumba.
Ixesha lokuposa: 01-09-22