Extrudable compositions were prepared comprising poly(propylene) and a liquid additive comprising a lactam group. The compositions can comprise other optional additives that include a polyhemiaminal, antioxidants, UV light absorbers, and surfactants. The extruded compositions have higher percent elongation at break and lower Young's modulus compared to extruded poly(propylene) lacking the liquid additive. These and other property improvements make the extruded compositions attractive for forming field joint coatings for undersea pipeline applications.
制备出了由聚(
丙烯)和含有内酰胺基团的液体添加剂组成的可挤压组合物。该组合物还可包含其他可选添加剂,包括聚半乳醛、
抗氧化剂、
紫外线吸收剂和表面活性剂。与不含液体添加剂的挤出聚
丙烯相比,挤出组合物具有更高的断裂伸长率和更低的杨氏模量。这些特性和其他特性的改进使挤出组合物在海底管道应用中形成现场连接涂层方面具有吸引力。