| The industrial wastes has already attracted people’s attention with the improvement ofpeople’s environmental requirements, domestic and the growing contradiction between energysupply and demand, coupled. Therefore, how to handle the wastes to reach the purpose ofturning waste into treasure has become the focus of global concern. In this paper，pulpsediment and waste tires rubber powder were used as raw material for preparing waste tirepowder/pulp sediments composites and the interface compatibility of composite material willbe researched.With testing different moisture content, study the impact of pulp sediments moisturecontent on the mechanical properties of waste tire powder/pulp sediments composites，anddetermine the optimum moisture content of pulp sediments. The toughness of pulp sedimentsis improved by adding different amounts of waste tire powder, and determines the optimalcontent of waste tire powder. By adding a coupling agent Si69and KH550, improvecompatibility between pulp sediments and waste tire powder.In the study, the mechanical properties (Shore a hardness，tensile strength and elongationat break) of composite materials is tested to determine the best type and amount of couplingagent, and to determine the best formula, of which prepare waste tire powder/pulp sedimentscomposites. The structure and morphology of waste tire powder/pulp sediments compositesare studied by scanning electron microscopy (SEM) and transmission electron microscopy(TEM) analyzes, and preliminary judgment the compatibility between waste tire powder andpulp sediments. In order to investigate the compatible mechanism between waste tire powderand pulp sediments, the cross-linked structure of composite materials is analyzed by infraredspectroscopy (IR). Analyzing the role of the various elements in composite materials andcoupling agents in composites to study the compatibility of the composites by x-rayphotoelectron spectrometer test (XPS). According to the storage modulus and Tan Delta, theglass transition temperature Tg of the composite materials studied by dynamic mechanicalthermal analysis (DMA), and study the compatibility of waste tire rubber powder/pulpsediment.The results showed that the moisture content of paper pulp sediment is160%, pulpsediments and waste tire rubber powder compatibility is best. When the pulp sediments of100phr and waste tire rubber powder for ten phr, the mechanical properties of the composites hadbetter and compatibility is best. When Si69coupling agent and KH550coupling agentmodification waste tire rubber powder/sediment pulp composite material compatibility, it isfound that used coupling agent is better than no coupling agent, and effect of Si69modification is better than KH550.The most darling agent for Si69weight of2.5. Optimumformula for the moisture content of160%pulp sediment100, waste tire rubber powder10, antioxidant D1.5servings, sulfur2.5servings, promoter M1.5, coupling agent Si69is2.5.When dosage of coupling agent KH550and Si69respectively2.5, the pulp sediments andwaste tire rubber powder combined with the closest gap and more closely and less space. Pulpsediments and waste tire rubber powder have better compatibility. The infrared spectra togenerate a new-C=O and olefin double instead of functional group with coupling agentKH550and Si69in the preparation of the composite material. XPS analysis know joincoupling agent account for the Si element content increased significantly in the compositecoupling agent Si69as a bridge to connect the waste tire rubber powder in the powder and theplant fiber pulp sediments. DMA analysis found that the preparation of composite material ofglass transition temperature, loss tangent value smaller, coupling agent can form a stable andpulp sediments and waste tire rubber powder of covalent bond, plant fiber combined withscrap tire rubber powder surface close interface layer, enhance the plant fiber and thecompatibility of waste tire rubber powder. |
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