超高分子量聚乙烯复合材料的制备及性能研究  

Preparation and Investigation of UHMWPE Compostite for Radiation Protection

作　　者：康永[1] KANG Yong(Shaanxi Jintai Chlor-alkali Chemical Industry Co.,LTD,Yulin 718100,China)

机构地区：[1]陕西金泰氯碱化工有限公司,陕西榆林718100

出　　处：《广东橡胶》2018年第3期11-20,10,共11页Guangdong Rubber

摘　　要：采用压制-烧结-再压制法制备UHMWPE复合材料,预压制压力为18MPa,保温温度为190℃×0.5h,最终压制压力为45MPa。为性能测试提供合格的材料样品。通过样品的红外谱图和材料的表面形貌照片,结果表明偶联剂改善了无机粉料与UHMWPE之间的界面亲和力,使得无机粉料更好地分布于有机物中。在材料的力学性能方面,材料的抗拉伸性能随填料的含量增加而减少。而硬度随填料的含量增加先提升后降低,并且在小于60%的填料含量时相同填料含量的样品材料B4C的硬度最高,在大于60%的填料含量时TiB2的硬度最高。通过抗中子辐射性能测试,结果表明当TiB2材料厚度达到17mm时复合材料对中子的吸收达到88%;通过数据模拟其厚度达到30mm时复合材料对中子的吸收达到100%;B4C材料厚度24mm时复合材料对中子的吸收将达到100%。通过对比分析B4C/UHMWPE复合材料的抗中子辐射能力大于TiB2/UHMWPE复合材料。The UHMWPE composed materials should adopt the method of pressing-sintering repressing to supply it various qualified material samples,with the pressure for 18MPa,temperature for 190℃×0.5h and final pressure 45MPa.From the infrared spectrum and surface topography of sample material,it can be fund that coupling agent has improved the interface strong affinity between inorganic powder and UHMWPE.Thus,the inorganic powder distributes better in organic matter.On the mechanical properties of the material,the tensile properties of the material increases with the packing content decreased while rigidity changes from increasing to decreasing with the influence of infilling content.At the same time,the rigidity of sample material B4C is higher than the same content with less than 60%while when it is more than 60%,the rigidity of TiB2 is the highest.From the test of neutron radiation resistance performance,the result states clearly the take up of TiB2 material can reach 88%when its thickness reaches 17mm.The take up can reach 100%when the thickness of TiB2 material reaches 30mm while the thickness of B4C/UHMWPE composed materials is 24mm.Through the contrastive analysis,B4C/UHMWPE composed materials has got higher neutron radiation resistance than TiB2/UHMWPE composed materials.

关 键 词：超高分子量聚乙烯 界面 结晶 取向 填料含量 表面形貌 抗辐射性 吸收截面积 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]