Kodi mukuphunzitsani momwe mungasankhire chotsukira cha epoxy resin?

Chothandizira kuchiritsa cha epoxy ndi mankhwala omwe amagwiritsidwa ntchito pochiritsama resini a epoxymwa kuchita zinthu mogwirizana ndi magulu a epoxy mu epoxy resin kuti apange kapangidwe kolumikizana, motero kupanga epoxy resin kukhala chinthu cholimba komanso cholimba.
Ntchito yayikulu ya epoxy curing agents ndikuwonjezera kuuma, kukana kukwawa, komanso kukana mankhwala a epoxy resins, zomwe zimapangitsa kuti zikhale zokhalitsa komanso zolimba, zomwe ndi gawo lofunikira la epoxy pultruded composites. Nkhaniyi ikufotokoza momwe mungasankhire epoxy-curing agent yoyenera kutengera zinthu zosiyanasiyana:
Malinga ndi momwe zinthu zimakhalira
- Kuchiritsa kutentha kwa chipinda: Ngati pakufunika kuchiritsa mwachangu kutentha kwa chipinda, mankhwala ochiritsira a aliphatic amine monga ethylenediamine ndi diethylenetriamine angasankhidwe; ngati liwiro lochiritsa silikufunika kukhala lalikulu, ndipo nthawi yogwira ntchito siikufunikira, mankhwala ochiritsira a polyamide angasankhidwe.
- Kuchiritsa kutentha: Kuti thupi lisamatenthe kwambiri komanso kuti likhale ndi mphamvu zamagetsi, mankhwala ophera amino acid, monga diaminodiphenylsulfone (DDS), ndi zina zotero, angagwiritsidwe ntchito; kuti thupi lisamatenthe kwambiri kutentha, mankhwala ophera amino acid osinthidwa okhala ndi ma accelerators angaganizidwe.
- Kuchiritsa pansi pa mikhalidwe yapadera: pochiritsa pamalo ozizira, chochiritsa chonyowa chingasankhidwe; pa makina opepuka ochiritsa, chochiritsa chokhala ndi photoinitiator ndi epoxy acrylate chingasankhidwe.
Malinga ndi zofunikira pakuchita bwino
- Kapangidwe ka makina: ngati pakufunika kuuma kwambiri ndi mphamvu zambiri, mankhwala ochiritsira a anhydride angasankhidwe; ngati pakufunika kusinthasintha kwabwino ndi kukana kugunda, mankhwala ochiritsira olimba monga rabara ya polysulfide ndi oyenera kwambiri.
- Kukana mankhwala: Kufunika kwakukulu kwa kukana asidi, alkali, ndi zosungunulira,utomoni wa phenolicChothandizira kuchiritsa kapena chothandizira china chosinthira cha amine ndicho choyenera kwambiri.
- Kukana kutentha: Pa malo otentha kwambiri, monga pamwamba pa 200℃, chotsukira cha silicone kapena chotsukira chokhala ndi kapangidwe ka polyaromatic chingaganizidwe.
Malinga ndi malo ogwiritsira ntchito
- Malo okhala m'nyumba: Zofunikira kwambiri pa chitetezo cha chilengedwe, chothandizira kuchiritsa cha epoxy chochokera m'madzi kapena chothandizira kuchiritsa cha aliphatic amine chotsika kwambiri ndicho choyenera.
- Malo akunja: kukana kwa nyengo kumafunika, mankhwala ochiritsira a alicyclic amine okhala ndi kukana kwa UV ndi abwino kwambiri.
- Malo apadera: M'malo omwe ali ndi zofunikira kwambiri paukhondo monga chakudya ndi mankhwala, zinthu zotsukira za epoxy zopanda poizoni kapena zopanda poizoni monga zinthu zotsukira za polyamide zovomerezeka kuti zisawonongeke ziyenera kusankhidwa.
Ganizirani zofunikira pa ndondomekoyi
- Nthawi yogwira ntchito: Kwa nthawi yayitali yogwira ntchito, sankhani mankhwala obisala, monga dicyandiamide, ndi zina zotero. Kwa nthawi yochepa yogwira ntchito komanso yochiritsa, sankhani mankhwala ochiritsa aliphatic amine ofulumira.
- Mawonekedwe Ochiritsa: Kuti muwone mawonekedwe ochiritsa opanda utoto komanso owonekera, sankhani mankhwala ochiritsa a alicyclic amine, ndi zina zotero. Kuti muwone mawonekedwe otsika, sankhani mankhwala ochiritsa a amine omwe ali otsika mtengo.
Kuphatikiza ndi mtengo wofunikira
- Poganizira za kukwaniritsa zofunikira pakuchita bwino, yerekezerani mtengo ndi mlingo wa mankhwala osiyanasiyana ochiritsira. Mtengo wa mankhwala ochiritsira amine wamba ndi wotsika, pomwe mankhwala ena apadera ochiritsira monga mankhwala ochiritsira okhala ndi fluorine ndi silicone ndi okwera mtengo kwambiri.