白炭黑补强天然胶乳胶膜性能的提升研究

Improving Properties of Natural Rubber Latex Film Reinforced with Silica

采用白炭黑对天然胶乳胶膜补强,并通过正交试验研究硫黄、促进剂PX、碳酸锌、白炭黑用量对硫化胶膜物理性能的影响。结果表明:以硫化胶膜的拉伸强度为考察指标,4个因子的影响从大到小依次为促进剂PX、白炭黑、碳酸锌、硫黄,优化用量为促进剂PX0.9份、白炭黑1.11份、碳酸锌0.6份、硫黄1份,相应配方硫化胶膜的拉伸强度可达到31.37 MPa;以硫化胶膜的撕裂强度为考察指标,4个因子的影响从大到小依次为白炭黑、促进剂PX、硫黄、碳酸锌,优化用量为白炭黑1.31份、促进剂PX0.7份、硫黄1.25份、碳酸锌0.5份,相应配方硫化胶膜的撕裂强度可达到65 kN·m^(-1)。

Silica was used to reinforce the natural rubber latex film,and the effects of the dosages of sulfur,accelerator PX,zinc carbonate and silica on physical properties of the vulcanized rubber film were studied by orthogonal test.The results showed that,taking the tensile strength of the vulcanized rubber film as the index,the influences of the four factors in descending order were accelerator PX,silica,zinc carbonate and sulfur.the optimal dosages were 0.9 phr of accelerator PX,1.11 phr of silica,0.6 phr of zinc carbonate and 1 phr of sulfur,and the tensile strength of the corresponding formulated vulcanized rubber film reached 31.37 MPa.Taking the tear strength of the vulcanized rubber film as the index,the influences of the four factors in descending order were silica,accelerator PX,sulfur and zinc carbonate,the optimal dosages were 1.31 phr of silica,0.7 phr of accelerator PX,1.25 phr of sulfur and 0.5 phr of zinc carbonate,and the tear strength of the corresponding formulated vulcanized rubber film reached 65 kN·m^(-1).