Properties of organosilicon flame retardant wood-plastic composites
The different flame retardant wood-plastic composites are prepared by adding methylphenyl polyborosiloxane (PB),PB/APP composite flame retardant and PB/nano-SiO2 composite flame retardant to wood-plastic composites (WPC),respectively.The influence of the flame retardants on the flame retardancy and the mechanical properties of the wood-plastic composites are studied.The results show that polyborosiloxane increases the degradation residue of the WPC at 800℃ during the thermal degradation process and promotes the formation of carbon residue.The PB/nano SiO2 or PB/APP composite flame retardant further improves the thermal degradation residual of the WPC.The polyborosiloxane and its composite flame retardants can also reduce the emissions of heat,CO2 and mass loss rate during the combustion of the WPC.Among the three types of flame retardant composites,the polyborosiloxane/APP composite flame retardant provides the best flame retardancy for the WPC.The polyborosiloxane and its composite flame retardants improve the flexural strength of the WPC significantly and keep the tensile strength of the WPC as the same as virgin,but reduce the impact strength of the WPC.
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NSTL
万方数据
维普
