3D printing filament NIR light responsive SEBS Technology: general issues adhesive boron nitride chain branching chain crosslinking chain extender chemical modification compatibility compatibilizer composites ethylene-propylene-diene monomer rubber (EPDM) expanded bead expansion ratio fluorosilicone hardness hollow glass microsphere hybrid flame retardant materials hydrogen bonding hydrolysis hyperbranched polymer impedance spectroscopy influence of gypsum interfacial adhesion ionic conductivity lignin lubricant magnesium oxide