改性钢渣基相变储能型丁苯橡胶的制备及其性能研究

Preparation of Modified Steel Slag-based Phase Change Energy Storage Styrene Butadiene Rubber and Its Properties

固体废弃物高附加值利用是资源可持续发展的重要途径之一。以石蜡与改性钢渣制备相变储能改性钢渣,然后将相变储能改性钢渣取代部分炭黑与丁苯橡胶进行复合,制备改性钢渣基相变储能型丁苯橡胶。研究改性钢渣的性质,石蜡用量与相变储能改性钢渣用量对所制样品性能影响。结果表明,磷酸可以有效去除钢渣孔结构中的f-CaO,从而大幅提高了改性钢渣的比表面积和孔体积。当石蜡用量为10 g、改性钢渣用量为30 g和炭黑用量为20 g时,改性钢渣基相变储能型丁苯橡胶不仅具有良好的力学性能,即拉伸强度22. 1 MPa、邵氏A硬度65. 9和撕裂强度40. 2 kN/m,而且具有稳定的相变储能性能,即相变温度55. 5℃和相变焓13. 27 J/g。上述研究有利于改性钢渣基相变储能型橡胶在防水卷材、墙面保温材料与屋面隔热材料应用,从而实现钢渣高附加值利用。

High value-added utilization of solid wastes is one of the important ways of sustainable development.Paraffin and modified steel slag were used to prepare phase change energy storage modified steel slag,then,modified steel slag-based phase change energy storage styrene butadiene rubber were prepared by synthesizing styrene butadiene rubber and carbon black partially substituted by prepare phase change energy storage modified steel slag.The effects of properties of modified steel slag,amount of paraffin and amount of phase change energy storage modified steel slag on the properties of prepared samples were studied.The results show that phosphoric acid can effectively remove the f-CaO in the structure of steel slag to specific surface area and pore volume of modified steel slag are greatly improved.When the amount of paraffin as 10 g,amount of phase change energy storage modified steel slag as 30 g and amount of carbon black as 20 g,modified steel slag-based phase change energy storage styrene butadiene rubber presents not only good mechanical property,tensile strength 22.1 MPa,shore A hardness 65.9 and tear strength 40.2 kN/m;but also stable property of phase change energy storage,phase change temperature 55.5℃and phase change enthalpy 13.27 J/g.The above research is beneficial to the application of modified steel slag-based phase change energy storage styrene butadiene rubber in the application of waterproof rolling material,wall insulation material and roof insulation material,so as to realize the high value-added utilization of steel slag.