MOFs MWCNT-BN hybrids PC/ABS PUR composites UV curing chloroprene latexes coating combustion performance cooperative effect electrical insulation electrostatic self-assembly epoxy vitrimers ethylene–vinyl acetate copolymer (EVA) fire hazard fire retardant flame retardance flame retardancy flame retardant polymer flame-retardant mechanism glass transition temperature highly filled biocomposite hollow fiber membrane mechanical properties metal phosphinate metal-organic framework microcrystalline cellulose microencapsulated ammonium polyphosphate natural antioxidants particle board phenolphthalein