Utoto wa Polyurethane wopangidwa ndi madzi
Trapezium yapadera yochokera m'madzi, sayansi ya mankhwala ya dziko lonse, madzi oyeretsedwa, zowonjezera zochokera m'madzi ndi zodzaza zoteteza chilengedwe ndi zina, zilibe benzene, banja, benzene yachiwiri ndi zosungunulira zina zachilengedwe. Chogulitsachi chimakonzedwa pogwiritsa ntchito utomoni wa polyurethane wochokera m'madzi ngati zinthu zopangira filimu, HDI ngati chothandizira kuchiritsa, kuwonjezera zodzaza zachilengedwe komanso zothandizira zogwira ntchito. Filimu yonse, yowala kwambiri, mtundu wowala. Kumamatira bwino, kuuma kwambiri, komanso kukana nyengo bwino.
Munda wofunsira
Yoyenera zinthu zapamwamba kwambiri, komanso utoto wapamwamba sungathe kupirira nyengo. Imagwiritsidwa ntchito makamaka pokongoletsa pamwamba pa zitsulo monga mbiya ya nsanja yamagetsi yamphepo, zida zamakanika, makina omanga, mapaipi amafuta a petrochemical, ndi zina zotero. Ili ndi kukana kwabwino kwambiri kwa nyengo yakunja komanso kukana dzimbiri.
Chithandizo cha pamwamba
1. Pamwamba pake payenera kukhala paukhondo komanso pouma, ndipo kukonza pamwamba pake payenera kukwaniritsa zofunikira.
2. Zipangizo zomwe zimagwiritsidwa ntchito pomanga ziyenera kukhala zouma komanso zoyera. 3.
3. N'koletsedwa kukhudza asidi ndi alkali panthawi yokonzekera utoto ndi kupaka utoto.
4. nthawi yopaka utoto iyenera kulamulidwa mosamala, kutentha kukakhala 25′C, nthawi yopaka utoto siyenera kupitirira maola 12.
5. Sizingapakidwe utoto wokhuthala, filimu siingapitirire 40μm kapena idzaphulika.
6. Kumanga ndi kuumitsa ndi kuchiritsa panthawi ya chinyezi sikoposa 75%, kutentha sikochepera 0 ℃ C, apo ayi filimuyo singathe kuchiritsidwa kwathunthu.
Nthawi yotumizira: Epulo-01-2024