Yas extrusion kab: Polyphenylene ether engineering plastics —–PPO ntawm sab saum toj tsib engineering plastics

Polyphenylene ether (PPO) kuj yog ib qho ntawm tsib tus tsov ntawm cov yas engineering dav dav. Nws muaj qhov zoo ntawm kev ruaj khov siab, tiv taus kub siab, tsis kub hnyiab, muaj zog siab thiab cov khoom siv hluav taws xob zoo heev. Lub dielectric tas mus li thiab dielectric poob ntawm PPO yog ib qho me tshaj plaws hauv cov yas engineering thiab yuav luag tsis cuam tshuam los ntawm qhov kub thiab av noo.
Feem ntau siv 2,6-dimethylphenol synthesis ntawm polyphenylene ether, muaj kev ua tau zoo heev, qhov tseem ceeb tshaj plaws yog nyob rau hauv lub sijhawm ntev, muaj kev ruaj khov zoo heev thiab kev rwb thaiv hluav taws xob zoo heev, kev siv ntau yam kub, tuaj yeem siv tau ntev hauv -127 ~ 121 ℃. Nws muaj kev tiv thaiv zoo rau dej thiab pa dej, thiab cov khoom muaj lub zog tensile siab, lub zog cuam tshuam thiab kev tiv thaiv nkag. Tsis tas li ntawd, muaj kev tiv thaiv zoo thiab cov khoom hluav taws xob.

Kev Ua Haujlwm ntawm PPO

PPO ua rau kev txhaj tshuaj molding, extrusion, molding, tab sis kuj ua npuas dej, tshuab yas, iav fiber reinforced, electroplating, nqus tsev txheej, luam ntawv, machining thiab fusion welding. ppo rov siv tau, feem ntau rov siv dua 3 zaug, nws cov kev ua tau zoo tsis txo qis. ppo yaj fluidity tsis zoo, kev ua thiab molding nyuaj, feem ntau ntawm cov ntawv thov siv tau rau hloov kho ppo.
Cov hauv qab no yog kev qhia txog cov txheej txheem txhaj tshuaj PPO.

1. Cov khoom siv ci PPO
PPO yog cov polymer uas tsis yog crystalline, kev nqus dej tsawg heev, tab sis cov dej noo yuav ua rau cov khoom tsis zoo xws li nyiaj, npuas, vim li no, cov khoom siv raw tuaj yeem muab tso rau hauv qhov cub 80 ~ 1OO ℃, qhuav 1-2 teev tom qab siv.

2. Kev xaiv lub tshuab txhaj tshuaj molding
Rau PPO yaj yuav tsum siv lub tshuab txhaj tshuaj molding ntsia hlau, lub nozzle siv hom ncaj-dhau yog qhov zoo, lub qhov aperture yog 3-6 hli. Lub ntsiab ntws ntawm pwm yuav tsum siv lub taper loj dua lossis siv cov khoom rub hook, lub sprue kom luv tuab yog qhov zoo.

3. Kub txhaj tshuaj
Qhov kub txhaj tshuaj ntawm PPO yog 270-290 ° C. Qhov kub molding ntawm PPO yog 280-330 ° C thiab qhov kub molding ntawm modified PPO yog 260-285 ° C. Qhov kub yaj ntawm PPO yog 270-290 ° C.
PPO muaj qhov kub tsis kam, kub txog li 350 ℃, tsis muaj qhov tshwm sim thermal degradation pom tseeb hauv 300 ℃. Feem ntau, qhov kub ntawm lub thoob raug tswj ntawm 260-290 ℃, thiab qhov kub ntawm lub nozzle yog li 10 ℃ qis dua qhov kub ntawm lub thoob.
Vim yog qhov viscosity siab ntawm PPO yaj, yuav tsum siv qhov kub pwm siab dua thaum txhaj tshuaj pwm. Feem ntau, qhov kub pwm raug tswj ntawm 100 ~ 150 ℃. Thaum qhov kub pwm qis dua 100 ℃, cov khoom yas nyias nyias yooj yim kom puv nrog tsis txaus thiab delamination; thaum siab dua 150 ℃, npuas, hlau nyiaj, warpage thiab lwm yam tsis zoo yooj yim tshwm sim.

4. Kev txhaj tshuaj siab
PPO yaj viscosity, nyob rau hauv kev txhaj tshuaj molding, nws yog qhov tsim nyog los siv siab siab, kev txhaj tshuaj ceev ceev, tuav siab thiab lub sijhawm txias tsis tuaj yeem ntev dhau. Ua kom nce siab txhaj tshuaj, cov yaj yog qhov zoo rau kev sau pwm, kev tswj siab txhaj tshuaj dav dav hauv 100-140MPa, tuav siab tswj hauv 40-80MPa. raws li qhov xwm txheej tshwj xeeb los ua kev hloov kho.

5. Kev txhaj tshuaj ceev
Cov khoom uas muaj cov neeg khiav ntev yuav tsum tau txhaj tshuaj sai sai, tab sis hauv qhov no xyuas kom meej tias zaj duab xis muaj cua txaus.

II Kev hloov pauv ntawm PPO

Kev ua tau zoo ntawm polyphenylene ether zoo heev, tab sis tsis zoo rau cov kuab tshuaj, cov khoom yooj yim tawg, lub zog cuam tshuam qis, cov khoom siv raw kim, Achilles pob taws yog nws cov viscosity yaj loj heev, tsis zoo fluidity, thiab qhov kub mos ntawm 300 ℃ lossis ntau dua, thiab 330 ℃ kub siab ua thiab yooj yim rau degradation, ua rau muaj teeb meem molding thiab kev siv zog ntau dhau. Txhawm rau kov yeej cov kev tsis txaus no thiab muab PPO cov khoom tshiab, nws tau hloov kho ntau txoj hauv kev.

1. Kev hloov pauv ntawm PPO thiab PS sib xyaw
PPO thiab PS yog cov polymers amorphous uas muaj kev sib raug zoo. Los ntawm kev sib xyaw rau hauv PS, cov nqi ua tiav tuaj yeem txo qis thiab kev ua tiav ntawm PPO tuaj yeem txhim kho ntau heev, tab sis qhov kev tiv thaiv cua sov raug txo qis me ntsis. Qhov no yog thawj tiam ntawm polyphenylene ether alloy, yog li PPO tau siv dav, txhawm rau txhim kho kev ua tau zoo ntawm hom alloy no, tib neeg tau ua ntau yam kev txhim kho rau nws.

2. Kev hloov pauv ntawm PPO thiab PA sib xyaw
Qhov kev sib xyaw ua ke ntawm ob qho no tsis yog tsuas yog txhim kho kev ua haujlwm thiab kev tiv thaiv cov kuab tshuaj ntawm PPO xwb, tab sis kuj txhim kho qhov tiv thaiv cua sov thiab qhov ruaj khov ntawm PA, yog li ua tiav cov txiaj ntsig sib xws. Txawm li cas los xij, qhov sib xws ntawm ob qho no tsis zoo heev, koom nrog lub kaw lus tsis sib xws kiag li, thiab qhov sib cais theem ntawm cov kub sib xyaw ua ke yog qhov loj heev, ua rau muaj cov hlau tawg. Cov kws tshawb fawb tau ua ntau txoj kev tshawb fawb hauv kev ua kom muaj peev xwm, kev tawv thiab kev txhawb zog ntawm PPO / PA alloys, thiab tau ua tiav ntau cov txiaj ntsig tshawb fawb thiab ua rau PPO / PA alloys siv dav.

3. Kev hloov pauv sib xyaw ntawm PPO thiab PBT
Kev sib xyaw ua ke ntawm ob yam khoom tsim nyog daws tau qhov teeb meem ntawm kev nqus dej ntau ntawm PPO / PA alloy. Lub zog thiab lub zog ntawm PPO / PBT alloy tsis tuaj yeem ua tau raws li qhov xav tau ntawm ntau yam kev siv, zoo ib yam li PPO / PA blended system, uas kuj xav tau kev ua kom tawv thiab muaj zog.

4. Kev hloov pauv ntawm PPO thiab PPS sib xyaw
Nyob rau xyoo tas los no, qee cov khoom siv hluav taws xob thiab hluav taws xob ntawm cov txheej txheem sib dhos saum npoo, kev vuam pa thiab VPS txoj kev siv cov khoom siv solder tau dhau los ua qhov tseem ceeb, yog li cov resin siv kuj yuav tsum tiv taus qhov kub siab tshaj 260 ℃, thaum qhov kub hloov pauv iav ntawm PPO ntshiab tsuas yog li 210 ℃, tsis tuaj yeem ua tau raws li qhov xav tau kub-resistant, yog li kev tsim cov khoom siv kub-resistant PPO / PPS alloy. Tab sis ob qho tib si kuj xav tau nce lub peev xwm ntawm kev kho mob.

5. Kev hloov pauv ntawm PPO thiab PTFE sib xyaw
Ob yam khoom sib xyaw ua ke, PPO tiv taus cua sov, cov khoom siv kho tshuab, kev ruaj khov ntawm qhov ntev thiab PTFE hnav tsis kam, kev ua haujlwm lubrication, kev nqus dej me me, kev ua haujlwm ntawm cov khoom raug siab. Nws tuaj yeem ua tau raws li qhov xav tau kev ua tau zoo ntawm cov khoom siv lub cev thiab cov khoom siv bearing ze rau cov khoom siv hlau.

5. Kev hloov kho sib xyaw ntawm PPO thiab SBS
PPO thiab SBS muaj kev sib raug zoo, PPO / SBS alloy txhim kho qhov kev cuam tshuam thiab kev ua tau zoo ntawm PPO, nrog rau kev nqus dej tsawg, kev tawv zoo, qhov kub siab deflection kub thiab qhov tseeb siab, feem ntau yog siv hauv kev lag luam hluav taws xob thiab kev lag luam tsheb thiab lwm yam teb.

III Cov Ntawv Thov ntawm PPO

1. Hluav taws xob thiab khoom siv hluav taws xob
Kev lag luam hluav taws xob thiab hluav taws xob siv dav hauv kev tsim cov khoom sib txuas, cov kauj vuam spools, cov khoom siv tiv thaiv, cov hloov pauv thiab relays, cov khoom siv kho kom zoo nkauj, cov zaub hluav taws xob loj, cov capacitors hloov pauv, cov khoom siv roj teeb, microphones thiab lwm yam khoom.

2. Automotive kev lag luam
Haum rau cov khoom vaj huam sib luag ntawm lub cuab yeej, cov thav duab qhov rai, cov khoom nqus dej poob siab, cov lim dej twj tso kua mis, cov grilles radiator, cov grilles hais lus, consoles, cov thawv fuse, cov thawv relay, cov khoom sib txuas, cov npog log, thiab lwm yam.

3. Cov khoom siv hauv tsev
Siv rau cov TV, khoos phis tawj, koob yees duab, cov kab xev video, cov ntaubntawv kaw suab, cua txias, cua sov, lub lauj kaub mov thiab lwm yam khoom. Rau cov tshuab luam ntawv, cov tshuab computer, cov tshuab luam ntawv, cov tshuab fax thiab lwm yam khoom sab nraud thiab cov khoom sib xyaw.

4. Cov tshuab siv hauv kev lag luam
Haum rau kev ua cov khoom tiv taus cua sov, cov khoom rwb thaiv tsev, cov khoom tiv taus hnav, cov khoom kis tau tus mob; ua cov iav kub dua, cov hniav kiv cua, cov li qub thiab lwm yam, tuaj yeem hloov kev siv cov hlau tsis xeb; kuj tuaj yeem ua los ntawm cov ntsia hlau, cov khoom txuas thiab cov khoom txuas.