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首页> 外文会议>Thermoplastic Elastomers Topical Conference(TPE TopCon); 20070917-19; Akron,OH(US) >Extrusion Characteristics of Specialty Polyolefin Elastomer and Its Blends
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Extrusion Characteristics of Specialty Polyolefin Elastomer and Its Blends

机译：特种聚烯烃弹性体及其混合物的挤出特性

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摘要

Vistamaxx~(TM) specialty polyolefin elastomer (SPE) is a polyolefin elastomer with isotactic propylene crystallinity. This polymer contains a predominant amount of propylene with isotactic propylene crystallinity, with the balance of the composition being ethylene and other α-olefins. This new family of thermoplastic elastomer is highly elastic and exhibits excellent recovery from deformation. These polymers share the processability of conventional polyolefins such as polyethylene and isotactic polypropylene and can, thus, be easily formed into molded articles, film, fibers and nonwovens.Blending SPE with polypropylene at different proportions results in a very interesting material similar to conventional TPO products. The elasticity and other physical properties of the compound can be tailored by selecting the proper grades of both SPE and PP as well as the ratio of PP and SPE. The higher the SPE content, the higher the extrusion rate because of the lower crystallinity of SPE. The elasticity and softness of the blend compound can be optimized by the blend ratio and polymer selection to meet specific needs. As the percentage of SPE increases, the impact strength, softness and elasticity of the compound is also increased. The extrusion performance of the blend is also affected by the blend ratio. A study on the blend of 35 MFR polypropylene resin and SPE of various MFR were examined and the extrusion behaviors of the blend reported.
机译：VistamaxxTM特种聚烯烃弹性体（SPE）是具有全同立构丙烯结晶度的聚烯烃弹性体。该聚合物包含占优势的丙烯，该丙烯具有全同立构丙烯的结晶度，其余为乙烯和其他α-烯烃。这种新的热塑性弹性体系列具有很高的弹性，并具有出色的变形恢复能力。这些聚合物具有常规聚烯烃如聚乙烯和全同立构聚丙烯的加工性能，因此可以很容易地成型为模制品，薄膜，纤维和非织造布。将SPE与不同比例的聚丙烯共混会产生非常有趣的材料，类似于常规TPO产品。可以通过选择SPE和PP的合适等级以及PP和SPE的比例来调整化合物的弹性和其他物理性能。 SPE含量越高，由于SPE的结晶度越低，挤出率越高。可以通过共混比例和聚合物选择来优化共混化合物的弹性和柔软度，以满足特定需求。随着SPE百分比的增加，复合材料的冲击强度，柔软度和弹性也增加。共混物的挤出性能也受共混比的影响。对35 MFR聚丙烯树脂和各种MFR的SPE的共混物进行了研究，并报道了该共混物的挤出行为。

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