论文部分内容阅读
该研究用实验来说明并用胶中相形态和填料分布影响的相互关系,并确定使用相容剂或者特别的共混技术是否对天然橡胶/顺丁橡胶(NR/BR)并用胶的性能有有利的影响。NR/BR并用胶既用母炼胶法也用单段共混法制备,采用了能给予两弹性体相之间有同等交联分布的硫化体系;测量了并用胶的形态、拉伸强度和撕裂强度。实验结果表明,即使用粘度很不同的母炼胶,也能快速方便地生产具有高度相容性和精细结构的并用胶。通过将简单的混合规则应用到在相同条件下混炼的单个胶料中,这些精细结构的母炼胶法并用胶的强度性能可被预测。虽然粗糙形态在特别情况下可能产生高抗撕裂,但是对于多数应用场合,精细结构能给予较为满意的拉伸强度和撕裂强度性能。对于单段共混法的并用胶,对精细结构形态研究的发展比对填料分散的研究快得多。对于含有最佳硫化体系的NR/BR并用胶,结论是:应当选择能使填充剂最佳分散的共混周期,而应用相容剂并不能显著地缩短共混周期或改善并用胶的性能。
The study experimentally illustrates and correlates with the influence of phase morphology and filler distribution in the gel and determines whether the use of compatibilizers or specific blending techniques is beneficial to the performance of the natural rubber / butadiene rubber (NR / BR) Impact. NR / BR and the use of plastic both with the masterbatch method is also prepared by single-stage blending, using the two elastomeric phase can be given the same crosslinking distribution of the vulcanized system; measured and with plastic form, tensile strength and Tear strength. The experimental results show that the use of masterbatches with very different viscosities makes it quick and easy to produce adhesive compositions with a high degree of compatibility and fine structure. By applying simple mixing rules to a single compound that is kneaded under the same conditions, the strength properties of these finely structured masterbatches and glues can be predicted. Although rough morphology can result in high tear resistance in special cases, the fine structure gives more satisfactory tensile strength and tear strength properties for most applications. For single-stage blending, the development of fine structure morphology is much faster than the study of filler dispersion. For NR / BR with the best vulcanization system, it is concluded that the blending cycle should be chosen to optimize the dispersion of the filler, whereas using the compatibilizer does not significantly reduce the blending cycle or improve the performance of the compounded rubber.