Kodi mumakuphunzitsani momwe mungasankhire wothandizira epoxy resin?

Epoxy kuchiritsa agent ndi mankhwala omwe amagwiritsidwa ntchito kuchizaepoxy resinspochita mankhwala ndi magulu a epoxy mu epoxy resin kuti apange mawonekedwe osakanikirana, motero kupanga epoxy resin kukhala chinthu cholimba, cholimba.
Ntchito yayikulu ya ma epoxy machiritso ndi kukulitsa kuuma, kukana kwa abrasion, ndi kukana kwa mankhwala a epoxy resins, kuwapanga kukhala zinthu zokhalitsa komanso zolimba, zomwe ndi gawo lofunikira kwambiri la epoxy pultruded composites. Nkhaniyi ikugawana momwe mungasankhire chithandizo choyenera cha epoxy kutengera zinthu zosiyanasiyana:
Malinga ndi machiritso mikhalidwe
- Kuchiritsa kutentha kwa firiji: Ngati kuchiritsa mwachangu kutentha kwachipinda kumafunika, machiritso a aliphatic amine monga ethylenediamine ndi diethylenetriamine angasankhidwe; ngati kuthamanga kwa machiritso sikuyenera kukhala kwakukulu, ndikuyang'ana nthawi yogwira ntchito, othandizira ochiritsa polyamide angasankhidwe.
- Kuchiritsa kutentha: Pakukana kutentha kwakukulu komanso makina, onunkhira ochiritsa amine, monga diaminodiphenylsulfone (DDS), etc., angagwiritsidwe ntchito; pakuchiritsa kwachangu kwanthawi yayitali, othandizira ochiritsa amine okhala ndi ma accelerator angaganizidwe.
- Kuchiza pansi pazikhalidwe zapadera: kuchiritsa m'malo a chinyezi, wothandizira wothira wonyowa amatha kusankhidwa; kwa njira yochiritsa yopepuka, wochiritsa wokhala ndi photoinitiator ndi epoxy acrylate akhoza kusankhidwa.
Malingana ndi zofunikira zogwirira ntchito
- Makina amakina: ngati kuuma kwakukulu ndi kulimba kwakukulu kumafunikira, othandizira ochiritsa a anhydride amatha kusankhidwa; ngati kusinthasintha kwabwino ndi kukana kwamphamvu kumafunika, zochizira zolimba monga mphira wa polysulfide ndizoyenera.
- Kukana kwa Chemical: zofunika kwambiri mu asidi, alkali, ndi kukana zosungunulira,phenolic utomoniwochiritsa kapena wochiritsira wosinthidwa wa amine ndiwoyenera kwambiri.
- Kukana kutentha: Pamalo otentha kwambiri, monga pamwamba pa 200 ℃, wochiritsa silikoni kapena wochiritsa wokhala ndi polyaromatic angaganizidwe.
Malingana ndi malo ogwiritsira ntchito
- Chilengedwe cham'nyumba: zofunika kwambiri zoteteza chilengedwe, wothandizila wamadzi wa epoxy kapena wotsika kwambiri wa aliphatic amine wochiritsa ndi woyenera kwambiri.
- Malo akunja: kukana kwanyengo kumafunika, machiritso a alicyclic amine okhala ndi kukana kwa UV ndi oyenera kwambiri.
- Malo apadera: M'malo omwe ali ndi ukhondo wambiri monga chakudya ndi mankhwala, mankhwala omwe sali ndi poizoni kapena otsika kwambiri a epoxy monga ovomerezeka a polyamide otsimikizira chitetezo cha chakudya ayenera kusankhidwa.
Ganizirani zofunika pa ndondomeko
- Nthawi yogwira ntchito: Kwa nthawi yayitali yogwira ntchito, sankhani chochizira chobisika, monga dicyandiamide, ndi zina zotere.
- Maonekedwe Ochiritsa: Kuti mukhale ndi mawonekedwe ochiritsa opanda mtundu komanso owoneka bwino, sankhani machiritso a alicyclic amine, ndi zina zotero.
Kuphatikiza ndi mtengo factor
- Pansi pamalingaliro okwaniritsa zofunikira pakuchita, yerekezerani mtengo ndi mlingo wa othandizira osiyanasiyana ochiritsa. Mtengo wa mankhwala wamba ochiritsa amine ndiwotsika, pomwe mankhwala ena apadera ochiritsa monga okhala ndi fluorine ndi ma silikoni amakhala okwera mtengo kwambiri.