Mu myaka yashize, ikoreshwa rya plastiki idasanzwe yubuhanga ryagiye ryiyongera buhoro buhoro kuva mu gisirikare cyabanjirije icyogajuru no mu kirere kugera mu mirima myinshi ya gisivili, nk'imodoka, gukora ibikoresho, n'ibicuruzwa byo mu rwego rwo hejuru. Muri byo, polifhenylene sulfide (PPS) na polyetheretherketone (PEEK) ni ubwoko bubiri bwa plastiki idasanzwe yubuhanga ifite iterambere ryihuse kandi ryagutse.
PEEK iruta PPS muburyo bwimbaraga, ubukana, nubushyuhe ntarengwa bwo gukora. Kubijyanye nubushyuhe bwo hejuru, ubushyuhe bwa PEEK buri hejuru ya 50 ° C kurenza ubwa PPS. Kurundi ruhande, ikiguzi kigaragara ugereranije nibikorwa byiza byo gutunganya PPS bituma ikoreshwa cyane.
PPS ifite ibyiza byo gukora bikurikira:
(1) Imbere ya 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) Ubwinshi bwikirenga
Mubisabwa murwego rwo gutwikira ikaye, iyi nyungu iragaragara kuruta iya PC. Umubare munini winyongera ntuzagira ingaruka zikomeye gusa kumazi yibikoresho no gutera ingorane zo gutunganya, ariko kandi uzatera ibibazo nkibisimba bireremba hejuru, hejuru yintambara, hamwe nubukanishi bubi. Kuri kimwe cya kabiri cya kirisiti ya PPS, amazi yayo menshi cyane atuma fibre yikirahure yuzura kurenza 50%. Muri icyo gihe, mugihe cyubushyuhe bwo hejuru bwo gushonga kuvanga no gusohora, ubukonje buke bwa PPS ugereranije na PC burashobora gutuma fibre ya Glass fibre igabanuka kurwego rwo hasi rwogosha no kuyisohora, bikavamo uburebure burebure bwo kubika ingingo ya nyuma yashizwemo inshinge, byongera modulus.
(3) Kwinjiza amazi-Ultra-make
Iyi nyungu ni iya PA. Kubijyanye na fluidite, PA yuzuye cyane na PPS biragereranywa; no kumiterere yubukanishi, PA ikomatanya hamwe namafaranga yuzuye niyo yiganje cyane. Igisubizo nuko igipimo cyibicuruzwa byibicuruzwa bya PPS bitewe no guhindura amazi kwifata biri hasi cyane ugereranije nibicuruzwa bya PA mubihe bimwe.
(4) Icyuma kidasanzwe hamwe nuburemere bwo hejuru
Binyuze mu guhuza ibishushanyo bidasanzwe hamwe nubushyuhe bukwiye, ibice byo guterwa inshinge za PPS nabyo bizasohoza ijwi risa no gukubita ibyuma munsi y'intoki zabantu, kandi ubuso buzaba bworoshye nkindorerwamo, hamwe nicyuma.
PEEK ifite imitungo idasanzwe ikurikira:
(1) Kurwanya ubushyuhe bukabije.
Irashobora gukoreshwa igihe kirekire kuri 250 ° C, ubushyuhe burashobora gushika 300 ° C mukanya, kandi ntibishobora kubora mugihe gito kuri 400 ° C.
(2) Ibikoresho byiza bya mehaniki hamwe no guhagarara neza.
PEEK irashobora kugumana imbaraga nyinshi mubushyuhe bwinshi. Imbaraga zunama kuri 200 ° C zirashobora kugera kuri MPa 24, kandi imbaraga zo kugonda nimbaraga zo kwikuramo kuri 250 ° C zishobora kugera kuri MPa 12-13. Irakwiriye cyane cyane gukora ibicuruzwa bikomeza ubushyuhe bwinshi. ibice bikora. PEEK ifite ubukana buhanitse, ihagaze neza kandi ihamye yo kwagura umurongo, wegereye cyane aluminium. Mubyongeyeho, PEEK nayo ifite imbaraga zo guhangana n’ibikurura, irashobora kwihanganira imihangayiko ikomeye mugihe cya serivisi, kandi ntabwo izatera kwaguka cyane kubera kwongerera igihe.
(3) Kurwanya imiti nziza cyane.
PEEK irwanya imiti myinshi neza, ndetse no mubushyuhe bwinshi, hamwe no kurwanya ruswa isa nicyuma cya nikel. Mubihe bisanzwe, ikintu cyonyine gishobora gushonga PEEK ni acide sulfurike.
(4) Kurwanya hydrolysis nziza.
Kurwanya kwangirika kwimiti namazi cyangwa imyuka yumuvuduko mwinshi. Mugihe cyubushyuhe bwo hejuru hamwe numuvuduko mwinshi, ibice bya PEEK birashobora gukora ubudahwema mumazi kandi bigakomeza kubungabunga imiterere myiza. Nko kwibiza mumazi kuri 100 ° C muminsi 200, imbaraga ntizihinduka.
(5) Imikorere myiza ya flame retardant.
Irashobora kugera kuri UL 94 V-0, irizimya, kandi isohora umwotsi muke hamwe nubumara bwubumara mubihe byumuriro.
(6) Imikorere myiza y'amashanyarazi.
PEEK ikomeza ibintu byamashanyarazi hejuru yumurongo mugari n'ubushyuhe.
(7) Kurwanya imirasire ikomeye.
PEEK ifite imiterere ihamye yimiti, kandi ibice bya PEEK birashobora gukora neza munsi ya dosiye nyinshi ya ionizing.
(8) Gukomera.
Kurwanya umunaniro uhinduranya stress nibyiza muri plastiki zose kandi biragereranywa na alloys.
(9) Ubuvanganzo buhebuje no kwambara birwanya.
Kurwanya kwambara cyane hamwe na coefficient nkeya yo guterana bikomeza kuri 250 ° C.
(10) Imikorere myiza yo gutunganya.
Gusohora byoroshye no gutera inshinge, hamwe no gukora neza.
Igihe cyo kohereza: 01-09-22