The results showed the density of the foam decreased, which lowered by 30% when the foaming agent amount was 1.0 phr, the weight of the composite could be decreased efficiently by chemical foaming;

• 结果表明：发泡后木塑材料的密度降低，发泡剂用量为1.；0份时材料密度降低了近30%25，化学发泡法可有效减轻材料的自重；