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Thermoplastic elastomer (TPE), made from ethylene propylene diene monomer (EPDM) and polypropylene (PP) base on reactive blending, has an excellent processing performance and characteristics and a wide range of applications. In this paper, EPDM, PP and ammonium lignosulfonate (AL) were selected as raw materials, wood flour (WF) of poplar tree was used as filler, naphthenic oil was used as plasticizer, DCP vulcanization system with dynamic vulcanization was carried, to make a new kind of composite material. This research studied the influences of wood flour and naphthenic oil content on the microstructure, mechanical properties and rheological properties of the composite material. The result showed: the content of wood flour and naphthenic oil has big impact on composite material. With the increase of the wood flour content, the mechanical properties are increased firstly and then decreased. The viscosity and modulus of the composite is improved with the increase of wood flour. With of the increase of the amount of naphthenic oil, the mechanical properties, viscosity and modulus of the composites decreased. When the content of wood flour is between 30–60 parts and the content of naphthenic oil is less than 20, the EPDM/PP/AL composite is suitable for using as the core layer elastic material of composite floor.

Effect of wood flour and naphthenic oil on morphology, rheological and mechanical properties of EPDM/PP/AL composite