RIGID RENEWABLE POLYESTER COMPOSITIONS HAVING A HIGH IMPACT STRENGTH AND TENSILE ELONGATION
    8.
    发明公开

    公开(公告)号:EP2812396A1

    公开(公告)日:2014-12-17

    申请号:EP13746913.6

    申请日:2013-01-28

    摘要: A thermoplastic composition that contains a rigid renewable polyester and a polymeric toughening additive is provided. The toughening additive can be dispersed as discrete physical domains within a continuous matrix of the renewable polyester. An increase in the deformation force and elongational strain causes debonding to occur in the renewable polyester matrix at those areas located adjacent to the discrete domains. This can result in the formation of a plurality of voids adjacent to the discrete domains that can help to dissipate energy under load and increase impact strength. To even further increase the ability of the composition to dissipate energy in this manner, an interphase modifier may be employed that reduces the degree of friction between the toughening additive and renewable polyester and thus enhances the degree and uniformity of debonding.

    摘要翻译: 提供了含有刚性可再生聚酯和聚合物增韧添加剂的热塑性组合物。 增韧添加剂可以作为可再生聚酯的连续基质中的离散物理区域分散。 变形力和伸长应变的增加导致可再生聚酯基体在位于相邻离散区域的那些区域发生剥离。 这可能导致邻近离散区域的多个空隙的形成,其可以帮助在负载下耗散能量并增加冲击强度。 为了进一步提高组合物以这种方式耗散能量的能力,可以采用降低增韧添加剂与可再生聚酯之间的摩擦程度的相间改性剂,从而提高剥离的程度和均匀性。