Abs
Kev ua tau zoo ntawm ABS
Abs yog muaj peb cov tshuaj monomers acrylonitrile, butadiene thiab styrene. Los ntawm qhov kev pom ntawm morphology, ABS yog cov khoom tsis yog-crystalline, muaj zog dua thiab muaj zog "muaj zog, steel" muaj kev ua tau zoo. Nws yog amorphous polymer, ABS yog qhov dav dav yas, dav dav siv, dav yog qhov ntau me me yog 1.05g / me ntsis hnyav dua li dej), qis shrinkage tus nqi (0.60%), ruaj khov loj, yooj yim molding ua.
Cov yam ntxwv ntawm ABS tsuas yog nyob ntawm qhov sib piv ntawm peb monomers thiab cov qauv molecular ntawm ob theem. Qhov no tso cai rau kev hloov pauv tau zoo hauv cov khoom tsim tsim, thiab yog li tsim ntau pua ntawm cov ntaub ntawv sib txawv ntawm kev ua lag luam. Cov ntaub ntawv sib txawv zoo no muab cov yam ntxwv sib txawv, xws li nruab nrab rau kev cuam tshuam siab, tsawg kom siab ua tiav thiab kub distortion cov yam ntxwv. Cov khoom siv abs muaj zoo heev machinability, cov yam ntxwv zoo, qis creep, zoo heev seem stability thiab kev cuam tshuam ntau zog.
ABS yog lub teeb daj granular los yog hlaws dai, hnav tsis kam, cov khoom siv hluav taws xob tsawg, thiab cov txheej txheem yooj yim thiab daim ntawv. Qhov tsis zoo yog huab cua tiv thaiv, kub tawm tsam yog neeg pluag, thiab ua pa.
Cov Txheej Txheem Tshaj Tawm ntawm Abs
Abs muaj siab hygroscopiness thiab humidity rhiab heev. Nws yuav tsum tau qhuav tag nrho thiab preheated ua ntej tsim thiab ua (kom qhuav rau ntawm 80 ~ 90nc cov ntsiab lus noo noo yog tswj hwm hauv qab 0.03%.
Lub volt viscosity ntawm Abs resin yog tsawg rhiab rau qhov kub (txawv los ntawm lwm cov amorphous resins). Txawm hais tias kev txhaj tshuaj kub yog ib nyuag siab dua li tias ntawm PS, nws tsis tuaj yeem muaj qhov sov sov xws li PS. Lub viscosity ntawm Abs tsis tuaj yeem txo los ntawm cov cua sov dig muag. Qhov kev ua tau zoo ntawm ABS tuaj yeem txhim kho los ntawm kev nce nrawm ntawm cov ntsia hlau lossis txhaj tshuaj nyem. Kev ntsuas dav dav hauv xyoo 190-235 ℃ tsim nyog.
Lub viscosity melcosity ntawm Abs yog nruab nrab, siab dua li ntawd ntawm PS, siab dua thiab raws li kev txhaj tshuaj tiv thaiv siab (500-1000 bar) yog xav tau.
ABS cov khoom siv nrog nruab nrab thiab kev txhaj tshuaj tiv thaiv kev nrawm muaj cov txiaj ntsig zoo dua. (tshwj tsis yog tus duab yog cov nyom thiab cov khoom sib txuas yuav tsum tau muaj cov tshuaj txhuam ntxiv), cov khoom yog qhov yooj yim los tsim cov roj ntawm lub qhov ncauj.
ABS moulding kub yog siab, nws cov pwm kub yog feem ntau kho ntawm 25-70 ℃. Thaum tsim cov khoom loj dua, cov pwm ruaj khov (Pem Hauv Ntej Pwm (Cov pwm kub yuav cuam tshuam rau qhov ua tiav ntawm cov yas, qis dua kub yuav ua rau qis dua)
Abs yuav tsum tsis txhob nyob hauv qhov kub ntev ntev ntev ntev ntev (tsawg dua 30 feeb), txwv tsis pub nws yooj yim rau kev lwj thiab daj.
Cov ntawv thov raug
Automotive (twj paj nruag panels, lub cuab yeej daug cov cuab yeej, cov tshuab ua kom muaj plaub hau, thiab lwm yam), ntaus ntawv cov khoom siv, cov tsheb ua si xws li Raws li cov tsheb golf thiab dav hlau lub vias thiab lwm yam.
PMMA
Kev ua tau zoo ntawm PMMA
PMMA yog amorphous polymer, feem ntau yog hu ua PleexigLass. Zoo heev transparency, zoo cua sov ua kom zoo (thermal deformness, yooj yim rau cov khoom siv nyuaj, piv nrog PS, tsis yooj yim rau Nrib pleb, cov kev sib nqus tshwj xeeb ntawm 1.18G / CM3. PMMA muaj cov khoom siv kho tshiab zoo heev thiab huab cua tiv thaiv. Kev nkag mus ntawm lub teeb dawb yog siab npaum li 92%. PMMA cov khoom muaj cov birefringence heev, tshwj xeeb tshaj yog tsim nyog rau kev tsim cov yees duab Discs. PMMA muaj chav kub chav nab kub. Nrog rau kev nce ntawm kev thauj khoom thiab lub sijhawm, kev ntxhov siab tawg tuaj yeem tshwm sim.
Cov Txheej Txheem Tshaj Tawm ntawm Abs
PMMA Kev Ua PMA yuav tsum nruj dua, nws yog qhov rhiab heev rau cov dej khov thiab txias dua (2 mus rau 4 teev), nws yuav tsum tau tsim nyob rau ntawm lub siab (225 -245 ℃) Thiab siab, tuag kub nyob rau hauv 65-80 ℃ yog qhov zoo dua. PMMA tsis ruaj khov, thiab kev tsis sib haum xeeb tuaj yeem tshwm sim los ntawm qhov kub thiab txias lossis lub caij nyoog nyob ntawm qhov kub. Cov ntsia hlau ceev yuav tsum tsis txhob loj heev (60% lossis yog li), tuab cov khoom kub, yuav tsum tau siv lub rooj vag loj loj
Cov ntawv thov raug
Kev lag luam automotive (teeb tsa lub teeb, ntsuas phoo thiab lwm yam kev lag luam (cov khoom siv ntshav), cov khoom siv ntshav (cov khob haus dej)
Lub Sijhawm Post: 23-11-22