Affiliation:
1. College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
2. Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan Province, Sichuan, China
3. School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China
Abstract
Epoxy resin (EPs) has been widely used in many fields in recent years, such as electronics, adhesives, coatings, and so on, which mainly benefiting from its excellent mechanical and chemical properties, low price and easy preparation. However, conventional EPs tend to be flammable, which significantly prevents their applications especially in high flame-resistance required areas. In this work, we introduce nitrile groups and the benzoxazine ring into the flame-retardant, followed by a simple heat treatment for a multiple cross-linking reaction in EPs. The resultant halogen/phosphorus-free and environmentally friendly network not only suppress the migration of the functional flame retardants from the substrate, but also shows much enhanced flame-retardant property, including the UL-94 rate, total heat release and reduced peak heat release rate. As a result, the thermosets can pass the UL-94 V-0 rate and reach a LOI value at 32.7% at a very low addition amount (10 wt%) of this cross-linked flame retardant.
Funder
National Natural Science Foundation of China
Civil Aviation Flight University of China
Subject
Materials Chemistry,Organic Chemistry,Polymers and Plastics
Cited by
4 articles.
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