改性石膏晶须对HDPE复合材料力学性能的影响
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摘要
将改性磷石膏晶须与高密度聚乙烯(High density polyethylene,HDPE)进行共混,通过注塑成型技术制备HDPE/磷石膏晶须复合材料,采用傅立叶转换红外光谱(FI-IR)、扫描电镜(SEM)、热分析(DSC)等技术,分析改性磷石膏晶须对HDPE复合材料力学性能的影响。结果表明:改性后HDPE/磷石膏晶须复合材料的冲击强度、拉伸强度和弯曲强度分别为44.33 k J/m2、25.54 MPa和473.5 MPa,与纯HDPE相比,相应提高了31.5%、6.64%和25.15%;与未改性HDPE/磷石膏晶须复合材料相比,冲击强度提高69.13%,拉伸强度与弯曲强度分别降低1.28%和9.65%。故改性后HDPE/磷石膏晶须的综合性能较好。
The modified phosphogypsum whiskers were mixed with HDPE,and HDPE/phosphogypsum whisker composite was prepared by injection molding technology. The effects of modified phosphogypsum whiskers on the mechanical properties of HDPE were analyzed by FI-IR,SEM,DSC,etc. The results showed that the impact strength,tensile strength and bending strength of the modified HDPE/phosphogypsum whisker composites were 44. 33 k J/m2,25. 54 MPa and 473. 5 MPa,respectively.And compared with the pure HDPE,the corresponding increase value was 31. 5%,6. 64% and25. 15%,respectively,while compared with the unmodified HDPE/phosphogypsum whisker composite materials,the impact strength increased by 69. 13%,and the tensile strength and bending strength decreased by 1. 28% and 9. 65% respectively. Therefore,the modified HDPE/phosphogypsum whiskers have better comprehensive performance.
The modified phosphogypsum whiskers were mixed with HDPE,and HDPE/phosphogypsum whisker composite was prepared by injection molding technology. The effects of modified phosphogypsum whiskers on the mechanical properties of HDPE were analyzed by FI-IR,SEM,DSC,etc. The results showed that the impact strength,tensile strength and bending strength of the modified HDPE/phosphogypsum whisker composites were 44. 33 k J/m2,25. 54 MPa and 473. 5 MPa,respectively.And compared with the pure HDPE,the corresponding increase value was 31. 5%,6. 64% and25. 15%,respectively,while compared with the unmodified HDPE/phosphogypsum whisker composite materials,the impact strength increased by 69. 13%,and the tensile strength and bending strength decreased by 1. 28% and 9. 65% respectively. Therefore,the modified HDPE/phosphogypsum whiskers have better comprehensive performance.
引文
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[5]李玉杰.无机粉体填充HDPE对其综合性能的影响研究[J].城市地理,2016,11(24):182-183.
[6]WANG Q S,JONES J,LU N,et al.Development and characterization of high-performance kenaf fiber-HDPE composites[J].Journal of Reinforced Plastics and Composites,2018,37(3):191-200.
[7]王刚,陈钦,申亚军,等.石墨烯/碳纳米管协同改性HDPE复合材料的制备及性能[J].塑料工业,2016,44(7):27-30,152.
[8]ABOU-KANDIL A I,SHEHATA A B,YOUSEF E,et al.Effect of microstructural changes on thermal,electrical,and mechanical properties of HDPE reinforced by sisal fibers[J].Journal of Thermoplastic Composite Materials,2017,30(10):1373-1392.
[9]VASU A T,REDDY C,DANABOYINA S,et al.The improvement in mechanical properties of coconut shell powder as filter in HDPE composites[J].Journal of Polymer Science&Applications,2017,1(2):1-6.
[10]刘江,石文建,刁梦娜,等.磷石膏晶须/PP复合材料的结构与性能研究[J].塑料科技,2013,41(5):71-74.
[11]曾建,王苓.热处理对高密度聚乙烯结晶度及力学性能的影响[J].塑料制造,2016,41(5):48-52.
[12]舒志强,欧阳志英,龚丹梅.高钢级钻杆强度塑性试验研究[J].石油钻探技术,2017,45(5):53-59.
[13]姚婷珍,许天旱,王党会.屈强比升高对管线钢使用安全性的影响[J].机械工程材料,2012,36(8):62-68.
[14]王凡非,冯启明,王维清,等.硅烷偶联剂KH550对超细石英粉的改性[J].材料导报,2014,28(9):70-73.
[15]程国君,于秀华,唐忠锋,等.碳酸钙的偶联剂改性及对SBS力学性能的影响[J].材料科学与工艺,2013,21(1):49-55.