Eminyakeni yamuva nje, ukusetshenziswa kwamapulasitiki akhethekile wobunjiniyela kuye kwanda kancane kancane kusuka ezindaweni zangaphambilini zamasosha kanye nezasemoyeni kuya emikhakheni eminingi yabantu, njengezimoto, ukukhiqizwa kwemishini, kanye nezimpahla zabathengi ezisezingeni eliphezulu.Phakathi kwazo, i-polyphenylene sulfide (PPS) kanye ne-polyetheretherketone (PEEK) yizinhlobo ezimbili zamapulasitiki obunjiniyela akhethekile anokuthuthukiswa okusheshayo kanye nobubanzi bokusetshenziswa okubanzi.
I-PEEK iphakeme kune-PPS ngokwamandla, ukuqina, nezinga lokushisa eliphezulu lokusebenza.Mayelana nokumelana nezinga lokushisa eliphezulu, ukumelana nezinga lokushisa kwe-PEEK kucishe kube ngu-50°C ngaphezu kwalokho kwe-PPS.Ngakolunye uhlangothi, inzuzo yezindleko ezisobala kanye nokusebenza okungcono kokucubungula kwe-PPS kuyenza isetshenziswe kabanzi.
I-PPS inezinzuzo zokusebenza ezilandelayo:
(1) I-Intrinsic flame retardant
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) I-liquidity ephezulu kakhulu
Emkhakheni wesicelo sekhava ye-notebook, le nzuzo isobala kakhulu kunaleyo ye-PC.Inani eliphakeme lokwengezwa ngeke lithinte kakhulu kuphela uketshezi lwento futhi libangele ubunzima bokucubungula, kodwa futhi libangele izinkinga ezifana namafayibha antantayo angaphezulu, i-warpage ebucayi, kanye nezakhiwo ezingasebenzi kahle.Nge-semi-crystalline PPS, ukugcwala kwayo okuphezulu kakhulu kuvumela ukugcwaliswa kwe-fiber yengilazi ukuthi kudlule kalula ku-50%.Ngasikhathi sinye, ohlelweni lokuxubana kwezinga lokushisa eliphezulu nokuncibilika kwe-extrusion, i-viscosity ephansi ye-PPS uma iqhathaniswa ne-PC ingenza imicu ye-Glass idlule emazingeni aphansi e-shear kanye ne-extrusion, okuholela ekugcinweni kobude obude esihlokweni sokugcina esibunjiwe somjovo. iphinde inyuse i-modulus.
(3) Ukumuncwa kwamanzi aphansi kakhulu
Le nzuzo ikakhulukazi eye-PA.Mayelana noketshezi, i-PA ne-PPS egcwele kakhulu iyaqhathaniswa;futhi ngezakhiwo zemishini, izinhlanganisela ze-PA ezinenani elifanayo lokugcwalisa zibusa kakhulu.Umphumela uba ukuthi izinga lesici lemikhiqizo ye-PPS ngenxa yokuguqulwa kokumuncwa kwamanzi liphansi kakhulu kunelemikhiqizo ye-PA ngaphansi kwezimo ezifanayo.
(4) Ukuthungwa kwensimbi okuyingqayizivele nobulukhuni bobuso obuphakeme
Ngokuhlanganisa isikhunta esikhethekile kanye nezinga lokushisa elifanelekile lesikhunta, izingxenye zokubumba umjovo we-PPS zizophinde zikhiphe umsindo ofana nokushaya insimbi ngaphansi kokuthintwa kwezandla zomuntu, futhi indawo engaphezulu izoba bushelelezi njengesibuko, ibe nokucwebezela kwensimbi.
I-PEEK inezindawo ezilandelayo ezivelele:
(1) Ukumelana nokushisa okuphezulu kakhulu.
Ingasetshenziswa isikhathi eside ku-250°C, izinga lokushisa lingafinyelela ku-300°C ngokuphazima kweso, futhi ayiboli neze ngesikhathi esifushane ku-400°C.
(2) Izakhiwo ezinhle kakhulu zemishini nokuzinza kwe-dimensional.
I-PEEK ingagcina amandla aphezulu ezingeni lokushisa eliphezulu.Amandla okugoba ku-200°C asengafinyelela ku-24 MPa, futhi amandla okugoba namandla okucindezela ku-250°C angafinyelela ku-12-13 MPa.Ifaneleka ngokukhethekile ukukhiqiza imikhiqizo eqhubekayo ekushiseni okuphezulu.izingxenye zokusebenza.I-PEEK inokuqina okuphezulu, ukuzinza okuhle kwe-dimensional kanye ne-coefficient ephansi yokunwetshwa komugqa, eseduze kakhulu ne-aluminium yensimbi.Ngaphezu kwalokho, i-PEEK nayo inokumelana okuhle nokukhasa, ingakwazi ukumelana nokucindezeleka okukhulu phakathi nenkathi yesevisi, futhi ngeke ibangele ukunwetshwa okuphawulekayo ngenxa yokwelulwa kwesikhathi.
(3) Ukumelana kwamakhemikhali okuhle kakhulu.
I-PEEK imelana kahle namakhemikhali amaningi, ngisho nasezingeni eliphezulu lokushisa, ngokumelana nokugqwala okufana nensimbi ye-nickel.Ngaphansi kwezimo ezijwayelekile, okuwukuphela kwento engancibilikisa i-PEEK i-concentrated sulfuric acid.
(4) Ukumelana okuhle kwe-hydrolysis.
Imelana nokulimala kwamakhemikhali ngamanzi noma umhwamuko wamanzi anomfutho ophezulu.Ngaphansi kwesimo sokushisa okuphezulu nokucindezela okuphezulu, izingxenye ze-PEEK zingasebenza ngokuqhubekayo endaweni yamanzi futhi ziqhubeke zigcina izakhiwo ezinhle zemishini.Njengokucwiliswa okuqhubekayo emanzini ku-100 ° C izinsuku ezingu-200, amandla ahlala engashintshile.
(5) Ukusebenza okuhle kwe-flame retardant.
Ingafinyelela isilinganiso esingu-UL 94 V-0, iyazicisha, futhi ikhipha intuthu encane namagesi anobuthi ngaphansi kwezimo zelangabi.
(6) Ukusebenza kahle kukagesi.
I-PEEK igcina izakhiwo zikagesi ngaphezu kwefrikhwensi ebanzi nebanga lokushisa.
(7) Ukumelana nemisebe enamandla.
I-PEEK inokwakheka kwamakhemikhali ezinzile kakhulu, futhi izingxenye ze-PEEK zingasebenza kahle ngaphansi kwemithamo ephezulu yemisebe ye-ionizing.
(8) Ukuqina okuhle.
Ukumelana nokukhathala ekushintsheni ingcindezi iyona engcono kunazo zonke amapulasitiki futhi iqhathaniswa nama-alloys.
(9) Ukungqubuzana okuhle kakhulu nokumelana nokugqoka.
Ukumelana nokugqoka okuphezulu kanye ne-coefficient ephansi yokungqubuzana kugcinwa ku-250 ° C.
(10) Ukusebenza kahle kokucubungula.
I-extrusion elula nokubumba umjovo, nokusebenza kahle kokubumba okuphezulu.
Isikhathi sokuthumela: 01-09-22