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Dow推出聚烯烃改性用POE 总被引:1,自引:0,他引:1
美国密执安州Midland的Dow(陶氏)化学公司正着手进行扩大其聚烯烃弹性体(POE)Affinity应用范围的工作,目标为用于聚烯烃改性,2004年7月初在其德州Freeport的装置上已成功地工业化生产出2个聚烯改性专用Affinity牌号,市场商品命名为Affinity GA。 相似文献
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用聚烯烃弹性体(POE)代替传统的弹性体,对聚丙烯(PP)增韧改性,探讨了基体树脂、POE、HDPE、滑石粉、纳米CaCO3以及加工助剂EBS的用量对共混体系力学性能和流动性的影响.并通过扫描电镜观察冲击断面,研究共混物的形态结构.结果表明,POE能大幅度的改善材料的冲击韧性,HDPE和POE具有协同增韧效应,加工助剂EBS能改善PP共混材料的流动性,制得的PP改性材料具有高韧性和离流动性,可用于制造汽车装饰件. 相似文献
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高性能气调保鲜包装用CPP热封膜的研制 总被引:1,自引:0,他引:1
林渊智;陈文韬;陈盛;史凤烟 《中国塑料》2011,25(10):69-71
采用低熔点材料如聚烯烃弹性体(POE)、聚烯烃塑性体(POP)、茂金属聚乙烯(mPE)与三元共聚聚丙烯(PP)共混作为热封层,并添加适量的爽滑剂克服薄膜发黏的问题,采用三层共挤流延法制备了高性能气调保鲜用流延聚丙烯(CPP)热封膜。结果表明,采用POE-868作为低温热封材料时,与三元共聚PP的相容性较好,增韧效果明显;添加12份POE-868和2份爽滑剂,熔体温度控制在245~255 ℃,冷却辊温度控制在22 ℃,制备的CPP薄膜的各项性能均符合指标要求,其始封温度低于102 ℃。 相似文献
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介绍了聚烯烃热塑性弹性体(POE)官能化-熔融接枝的几种方法:在有机过氧化物引发剂存在下的熔融接枝法,裂解引发接枝,机械力引发接枝,复合引发接枝等,POE官能化接枝能改善其与极性的聚物间的界面亲和性,提高共混物的相容性、冲击强度和韧性等,从而拓宽POE的应用领域。 相似文献
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Ana Lúcia N. Da Silva Maria Ins B. Tavares Daniel P. Politano Fernanda M. B. Coutinho Marisa C. G. Rocha 《应用聚合物科学杂志》1997,66(10):2005-2014
A new family of homogeneous polyolefin polymers that exhibit unique molecular and rheological properties designated polyolefin elastomers (POEs) are characterized by a narrow molecular weight and high degrees of comonomer distribution. Because these copolymers are often elastomeric in nature, one of the uses for these materials is as impact properties improver for brittle polymers such as polypropylene at low temperatures. In this work a study was carried out about the effectiveness of the polyethylene elastomer (POE) as an impact modifier for polypropylene in relation to the traditional modifier EPDM. In this study the flow properties of of the POE/PP and EPDM/PP blends were also evaluated. The blends were analyzed by solid-state 13C nuclear magnetic resonance (13C-NMR) spectroscopy, scanning electron microscopy (SEM), and differential scanning calorimetry (DSC). The results showed that PEE/PP and EPDM/PP blends present a similar crystalline behavior, which resulted in a similar mechanical performance of the blends, on the composition analyzed. It was also verified that the POE/PP blend presents lower torque values than the EPDM/PP blend, which indicates a better processability when POE is used as an impact modifier. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 66: 2005–2014, 1997 相似文献
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粘土与弹性体改性聚丙烯复合材料的流变性研究 总被引:2,自引:0,他引:2
采用熔融共混法制备了二元复合材料聚丙烯(PP)/有机粘土(OREC)体系(PR体系)、聚烯烃弹性体(POE)增韧的PP体系(P厄体系)及三元复合材料OREC、POE补强增韧的PRE体系,采用毛细管流变仪研究了两种聚合物复合材料的流变性能。结果表明,在所研究的范围内PP及PP复合材料体系熔体的流变性均属于假塑性流体;对二元体系,OREC能够大大改善PP体系的加工流动性,在相同条件下PR体系的粘度小于纯PP的粘度,且随着粘土添加量的增加,粘度的下降幅度增大;POE能够改善PP的加工性能;三元PRE体系在相同条件下的表观粘度随着POE用量的增加而减小,但只有在较大用量及较小剪切力下的表观粘度小于二元体系的表观粘度。 相似文献
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透明聚丙烯材料低温增韧的研究 总被引:1,自引:0,他引:1
用(乙烯/辛烯)共聚物(POE)对透明聚丙烯(PP)进行了增韧改性实验。探讨了POE用量对POE改性PP材料常温和低温力学性能的影响。通过扫描电镜(SEM)观察试样冲击断面形貌,研究了改性PP的形态结构与材料性能的关系,进一步探讨了POE低温增韧透明PP的机理。结果表明,POE能大幅度改善材料的常温和低温冲击韧性;SEM分析表明,POE改性PP材料的断面有明显的屈服产生;制得的透明PP材料具有好的低温韧性,可在低温环境下使用。 相似文献
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Crosslinked linear low density polyethylene (XLPE) containing polyolefin elastomers (POE) has been evaluated. The blends with different dicumyl peroxide (DCP) and POE contents have been prepared and processed by compression molding. A series of the samples obtained have been investigated by gel content determination, scanning electron microscopy (SEM), different scanning calorimetry (DSC), mechanical, and dielectric behaviors measurements. The results obtained clearly show the relevant influence of the POE content, as well as of the DCP content, which tends to enhance crosslinking. As expected, the toughness of XLPE is improved by using adequate content of POE, and the blends exhibit a much more similar tensile behavior to that of elastomer. In addition, the results indicate that the blends possess the excellent dielectric behaviors, such as dielectric constant and dissipation factor. The crystallinity of the blends decreases as the DCP and POE contents increase. The melting temperature of the blends also decreases with the increase of DCP content, while POE content has few influences on the melting temperature of the blends. The SEM images strongly reveal that the blends are partially compatible, and the POE can be dispersed well in the matrix. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 1920–1927, 2007 相似文献
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新型聚烯烃弹性体的性能及其应用进展 总被引:2,自引:0,他引:2
介绍了使用茂金属催化剂合成的聚烯烃弹性体的优异特性,综述了聚烯烃弹性体与通用塑料(如聚丙烯)、工程塑料共混改性的进展。聚烯烃弹性体既有高弹性、高强度、高伸长率和良好的低温性能,又有优异的耐热老化和抗紫外性能。无论是均聚、共聚还是高流动性聚丙烯,POE的增韧效果都优于三元乙丙橡胶(EPDM)或乙丙橡胶(EPM)。与EPDM等改性剂相比,聚烯烃弹性体能在较低含量下实现材料的脆-韧转变,减少因加入弹性体造成的材料强度和模量的损失。作为聚丙烯改性剂可在改善聚丙烯冲击强度的同时适当保持其刚性和光学透明性。 相似文献
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聚烯烃弹性体改性聚丙烯的研究进展 总被引:1,自引:0,他引:1
介绍了新型聚烯烃弹性体(POE)的优异特性,综述了POE与通用塑料聚丙烯共混改性的研究进展。POE既有高弹性、高强度、高伸长率和良好的低温性能,又有优异的耐热老化和抗紫外性能。无论是均聚、共聚还是高流动性聚丙烯,POE的增韧效果都优于三元乙丙橡胶(EPDM)或乙丙橡胶(EPM)。与EPDM等改性剂相比,POE能在较低含量下实现材料的脆-韧转变,减少因加入弹性体造成的材料强度和模量的损失。作为聚丙烯改性剂可在改善聚丙烯冲击强度的同时适当保持其刚性和光学透明性。 相似文献