高抗冲聚丙烯喷灌管材的研制

用SBS和纳米CaCO3对无规共聚聚丙烯进行改性，结果表明，SBS使PP的冲击强度明显提高，但拉伸强度等有所降低；将表面改性的纳米CaCO3填充于PP／SBS共混体系中，可有效地提高共混体系的冲击强度、拉伸强度等力学性能及其它性能，可满足喷灌管在不同区域使用的要求。

Development of Irrigation Pipes of High-Impact PP

The modification of PP-R is conducted using SBS and Nano-CaCO3. The test result shows that SBS is obviously helpful to PP impact strength, but its tensile strength is reduced in some degree, adding Nano-CaCO3 with surface modification, the physical property including impact strength and tensile strength and other properties of the PP/SBS blending system has being improved greatly, which can satisfy the application requirements of irrigation pipes in different regions.