聚乙烯、聚丙烯填料对有机硅人体仿生材料性能的影响

Effect of polyethylene/polypropylene gel on the properties of silicone biomimetic materials

将用白炭黑补强的有机硅胶的胶液分成2份，1份固化后得到1#胶片；另1份加入到半固化的聚乙烯、聚丙烯凝胶中，再完全崮化得到2#胶片。结果显示2#胶片邵氏A硬度降低了33．33％-63．64％，最大拉仲强度提高了94％，撕裂强度提高了15．68％。2#胶片的100％，300％，500％的定伸强度均低于1#号胶片，使得材料的拉伸伸长率变大。说明聚乙烯、聚丙烯凝胶的加入，提高了材料的拉伸强度和撕裂强度，同时降低了邵氏硬度，但控制拉伸伸长率方面应进行新的研究。

The silicone reinforced with silica was divided into two parts, after curing, one was used to get 1# sheet rubber, and the other was added into semi-curing polyethylene/polypropylene （PFJPP） gel to get 2# sheet rubber. The measured results shows that the hardness of the 2# silicone sheet rubber was decreased by 33.33% 63.64%, the maximum tensile stress was increased by 94% and the tear strength was increased by 15,68%, but the tensile strength and modulus at 100%, 300%, 500% were lower than that of the 1# sheet rubber, which means the elongation at break was increased. The results demonstrated that addition of PE/PP gel can increase tensile stress and tear strength of silicone materials, reduce shore hardness, but it needs more explores in the restrained stretching of elongation.