Ntau tus neeg muas zaub tau tshaj tawm tias cov pob tshab siab TPU yog pob tshab thaum nws tau ua thawj zaug, vim li cas nws thiaj li tsis pom tom qab ib hnub thiab zoo li cov xim zoo li cov nplej tom qab ob peb hnub? Qhov tseeb, TPU muaj qhov tsis xws luag, uas yog tias nws maj mam tig daj thaum lub sijhawm. TPU absorbs noo noo los ntawm huab cua thiab tig dawb, los yog qhov no yog vim lub migration ntawm additives ntxiv thaum ua. Qhov laj thawj tseem ceeb yog tias cov roj nplua nyeem yog opaque, thiab yellowing yog tus yam ntxwv ntawm TPU.
TPU yog xim daj, thiab MDI hauv ISO yuav tig daj nyob rau hauv UV irradiation, qhia tias TPU yellowing yog ib yam khoom. Yog li ntawd, peb yuav tsum ncua lub sij hawm daj ntawm TPU. Yog li yuav ua li cas tiv thaiv TPU los ntawm yellowing?
Txoj Kev 1: Zam
1. Xaiv los tsim cov khoom siv xim dub, daj, lossis xim tsaus rau hauv thawj theem ntawm kev tsim cov khoom tshiab. Txawm hais tias cov khoom TPU no tig daj, lawv cov tsos tsis tuaj yeem pom, yog li tsis muaj teeb meem ntawm yellowing.
2. Tsis txhob raug tshav ntuj ncaj qha rau PU. PU chaw cia khoom yuav tsum txias thiab qhov cua, thiab PU tuaj yeem muab qhwv rau hauv hnab yas thiab muab tso rau hauv qhov chaw tsis muaj hnub ci.
3. Tsis txhob kis kab mob thaum lub sijhawm ua haujlwm. Ntau yam khoom PU tau kis kab mob thaum lub sijhawm txheej txheem ntawm kev txheeb lossis khaws cia, ua rau yellowing xws li tib neeg hws thiab cov kuab tshuaj organic. Yog li, cov khoom PU yuav tsum tau them nyiaj tshwj xeeb rau kev ua kom huv ntawm lub cev tiv tauj thiab txo cov txheej txheem txheeb xyuas kom ntau li ntau tau.
Txoj Kev 2: Ntxiv cov khoom xyaw
1. Ncaj nraim xaiv TPU cov ntaub ntawv uas ua tau raws li UV tiv thaiv specifications.
2. Ntxiv cov tshuaj tiv thaiv yellowing. Txhawm rau txhim kho lub peev xwm los tiv thaiv yellowing ntawm PU cov khoom, nws yog ib qho tsim nyog yuav tsum tau ntxiv cov khoom tshwj xeeb los tiv thaiv yellowing rau cov ntaub ntawv raw. Txawm li cas los xij, cov tshuaj tiv thaiv yellowing yog kim, thiab peb yuav tsum xav txog lawv cov txiaj ntsig kev lag luam thaum siv lawv. Piv txwv li, peb lub cev dub tsis rhiab rau yellowing, yog li peb tuaj yeem siv cov khoom pheej yig dua uas tsis muaj tshuaj tiv thaiv yellowing yam tsis muaj tshuaj tiv thaiv yellowing. Raws li cov tshuaj tiv thaiv yellowing yog cov khoom siv raw khoom ntxiv rau cov khoom A, peb yuav tsum tau nplawm thaum sib tov kom ua tiav cov khoom sib xws thiab cov nyhuv los tiv thaiv yellowing, txwv tsis pub lub zos yellowing yuav tshwm sim.
3. Txau cov xim daj resistant. Feem ntau muaj ob hom tshuaj pleev xim, ib qho yog hauv pwm txau thiab lwm yam yog tawm ntawm pwm txau. Kev txau cov xim daj tuaj yeem tsim cov txheej txheem tiv thaiv ntawm PU cov khoom tiav, kom tsis txhob muaj kuab paug thiab daj los ntawm kev sib cuag ntawm PU tawv thiab cua. Daim ntawv no yog tam sim no siv dav.
Txoj Kev 3: Kev hloov khoom siv
Feem ntau TPU yog TPU uas muaj ntxhiab tsw, uas muaj benzene rings thiab tuaj yeem nqus tau ultraviolet lub teeb thiab ua rau daj. Qhov no yog qhov laj thawj tseem ceeb rau yellowing ntawm TPU cov khoom. Yog li ntawd, cov neeg hauv kev lag luam suav nrog kev tiv thaiv ultraviolet, tiv thaiv yellowing, tiv thaiv kev laus thiab tiv thaiv ultraviolet ntawm TPU raws li tib lub tswv yim. Ntau lub tuam txhab TPU tau tsim tshiab aliphatic TPU los daws qhov teeb meem no. Aliphatic TPU molecules tsis muaj benzene rings thiab muaj photostability zoo, yeej tsis tig daj.
Tau kawg, aliphatic TPU tseem muaj nws qhov tsis zoo hnub no:
1. Lub hardness ntau yam yog nqaim, feem ntau ntawm 80A-95a
2. Cov txheej txheem ua tau zoo heev thiab ua haujlwm yooj yim
3. Tsis muaj pob tshab, tsuas tuaj yeem ua tiav cov pob tshab ntawm 1-2 hli. Cov khoom thickened zoo li pos huab me ntsis
Post lub sij hawm: Nov-25-2024