Koyar da ku yadda za a zabi epoxy resin curing wakili?

Epoxy curing wakili wani sinadari ne da ake amfani dashi don warkewaepoxy resinsta hanyar mayar da martani ta hanyar sinadarai tare da rukunin epoxy a cikin resin epoxy don samar da tsari mai alaƙa, don haka yin guduro epoxy ya zama abu mai ƙarfi, mai ɗorewa.
Babban aikin maganin maganin epoxy shine haɓaka taurin, juriya, da juriya na sinadarai na resin epoxy, yana mai da su abu mai ɗorewa kuma mai ɗorewa, wanda shine babban ɓangare na abubuwan haɗin gwanon epoxy pultruded. Wannan labarin yana raba yadda za a zaɓi madaidaicin wakili na maganin epoxy bisa dalilai daban-daban:
Dangane da yanayin warkewa
- Warkewa a cikin zafin jiki: Idan ana buƙatar warkewa da sauri a cikin zafin jiki, ana iya zaɓar magungunan aliphatic amine kamar ethylenediamine da diethylenetriamine; idan ba a buƙatar saurin warkewa ya zama babba, kuma mai da hankali kan lokacin aiki, ana iya zaɓar wakilai na curing polyamide.
- Maganin zafi: Don babban juriya na zafi da kaddarorin inji, ana iya amfani da magungunan amine curing, irin su diaminodiphenylsulfone (DDS), da sauransu,; don saurin warkarwa mai ƙarancin zafin jiki, ana iya la'akari da gyare-gyaren amine curing wakilai tare da accelerators.
- Gyarawa a ƙarƙashin yanayi na musamman: don warkewa a cikin yanayi mai laushi, ana iya zaɓar wakili na maganin jika; don tsarin warkar da haske, ana iya zaɓar wakili mai warkarwa tare da photoinitiator da epoxy acrylate.
Dangane da buƙatun aikin
- Kaddarorin injina: idan ana buƙatar babban tauri da ƙarfi mai ƙarfi, ana iya zaɓar wakilai masu warkarwa na anhydride; idan ana buƙatar sassauci mai kyau da juriya mai tasiri, magungunan warkarwa masu ƙarfi kamar polysulfide roba sun fi dacewa.
- Juriya na sinadaran: babban buƙatu a cikin acid, alkali, da juriya mai ƙarfi,phenolic gudurowakili mai warkarwa ko wasu gyare-gyaren amine curing wakili ya fi dacewa.
- Juriya mai zafi: Don yanayin zafi mai zafi, kamar sama da 200 ℃, ana iya la'akari da wakili na warkarwa na silicone ko wakili mai warkarwa tare da tsarin polyaromatic.
Dangane da yanayin amfani
- Muhalli na cikin gida: manyan buƙatun kare muhalli, wakili na maganin epoxy na tushen ruwa ko wakili mai warkarwa na aliphatic amine ya fi dacewa.
- Yanayin waje: ana buƙatar juriya mai kyau, alicyclic amine curing wakilai tare da kyakkyawan juriya na UV sun fi dacewa.
- Muhalli na musamman: A cikin mahalli masu manyan buƙatun tsafta kamar abinci da magani, waɗanda ba mai guba ba ko ƙarancin magani na epoxy mai guba irin su ƙwararrun ma'aikatan lafiyan abinci na polyamide suna buƙatar zaɓi.
Yi la'akari da bukatun tsari
-Lokacin aiki: Don dogon lokacin aiki, zaɓi wakili na ɓoye, kamar diyandiamide, da sauransu.
- Maganin bayyanar: Don bayyanar warkewa mara launi da bayyananne, zaɓi alicyclic amine curing agents, da sauransu. Don ƙananan buƙatun launi, zaɓi ma'aikatan amine curing masu ƙarancin farashi.
Haɗe da ƙimar farashi
- Ƙarƙashin tsarin biyan buƙatun aikin, kwatanta farashin da adadin nau'ikan magunguna daban-daban. Farashin magungunan amine na gama-gari yana da ƙasa kaɗan, yayin da wasu na'urori masu warkarwa na musamman irin su abubuwan da ke ɗauke da fluorine da silicone mai ɗauke da magunguna sun fi tsada.