钛酸酯偶联剂改性无机填料及其在聚丙烯复合材料中的应用

钛酸酯偶联剂改性的无机填料应用于聚丙烯复合材料，可以改善材料性能，扩大应用领域。概述了钛酸酯偶联剂改性的无机填料在不同种类的聚丙烯复合材料中的应用，以及对复合材料力学性能和阻燃性的影响。     

β成核剂与无机填料对聚丙烯力学性能的影响

无机填料可以提高聚丙烯的刚性、硬度、抗化学性、尺寸稳定性和气体阻隔性,同时减少聚合物的用量,降低产品成本。滑石粉和碳酸钙是聚丙烯复合材料中大量使用的两种填料。主要研究β成核剂和无机填料对聚丙烯成核效应的协同作用,考察经β成核剂FB-1分别与无机填料滑石粉和碳酸钙共同改性的聚丙烯力学性能。     

纳米微粒／聚丙烯复合材料的流变学研究进展

总结了有机纳米微粒和无机纳米微粒改性聚丙烯复合材料的流变学研究,并对纳米微粒改善复合材料的流变学性能进行了综述。纳米微粒的加入在提高复合材料力学性能的同时,能够改善复合材料的流变学性能,对材料的成型加工具有一定的指导意义。     

β成核剂与无机填料对聚丙烯力学性能的影响

无机填料可以提高聚丙烯的刚性、硬度、抗化学性、尺寸稳定性和气体阻隔性,同时减少聚合物的用量,降低产品成本。滑石粉和碳酸钙是聚丙烯复合材料中大量使用的两种填料。主要研究β成核剂和无机填料对聚丙烯成核效应的协同作用,考察经β成核剂FB-1分别与无机填料滑石粉和碳酸钙共同改性的聚丙烯力学性能。     

聚丙烯复合材料热稳定性能研究进展

本文简述了提高聚丙烯复合材料耐热降解性能的方法,为填料改性聚丙烯复合材料热解性能研究提供了参考,并展望了热降解研究在填料改性聚丙烯复合材料中的应用前景。     

聚丙烯复合材料应用的研究进展

在很多领域中单纯聚丙烯材料因其易被氧化、不易接合等缺点无法被应用,因此对聚丙烯的改性并研究其复合材料有着重大意义,从而扩大聚丙烯的应用范围,进而为社会带来收益。以不同的填充或增强材料来对聚丙烯复合材料进行综述,主要对玻纤维增强聚丙烯复合材料、天然纤维增强聚丙烯复合材料和无机填料/聚丙烯复合材料进行描述。     

纳米无机填料改性酚醛树脂基防热复合材料烧蚀性能研究现状

树脂基体中共混纳米无机填料是提高酚醛树脂基复合材料烧蚀性能的一种有效途径,无机填料与酚醛树脂共混改性制备复合材料的工艺简单、成本低、改性效果明显,已成为重要的研究方向。本文对无机填料特别是纳米无机填料改性酚醛树脂基烧蚀材料的烧蚀性能研究进行了梳理,并对多种纳米填料改性复合材料的烧蚀机理研究进行总结归纳。     

无机组合粒子/聚丙烯复合材料的改性研究

选用纳米碳酸钙、滑石粉、玻璃微珠作为无机填料,研究了三元复配填料填充对聚丙烯复合材料性能的影响。通过对复合材料熔体指数、力学性能以及形态结构的比较,探讨了无机组合粒子级复配共混的协同效应。结果表明:无机复配填料能够产生一定的协同效应,提高聚丙烯复合材料的综合性能。     

多级拉伸挤出制备PP/OMMT纳米复合材料的性能研究

采用自行设计的多级拉伸设备制备了聚丙烯/有机改性蒙脱土纳米复合材料,并对复合材料的热稳定性,阻隔性能和流变学性能进行了研究。实验结果表明:多级拉伸挤出技术不仅能有效的使填料分散,并且能使有机改性的蒙脱土在基体中沿流动方向取向,从而在一定程度上提高复合材料的性能。     

填料填充改性聚甲醛复合材料研究进展

综述了近年来不同无机纤维、无机粒子、有机填料与无机填料混合物及金属及其氧化物对聚甲醛(POM)复合材料改性的研究进展。介绍了填料在POM复合材料改性中的作用,对填料填充改性POM复合材料的发展趋势进行了展望。     

An investigation on the mechanical and dynamic rheological properties of single and hybrid filler/polypropylene composites based on talc and calcium carbonate

Some results of experiments on the mechanical and rheological properties of mineral filled polypropylene were presented. Single filler and hybrid filler composites of talc and calcium carbonate (CaCO₃) were prepared in a co‐rotating twin‐screw extruder. The effect of filler type, filler content, and coupling agent on the mechanical and rheological properties of the polypropylene were studied. The coupling agent was maleic anhydride‐grafted polypropylene (PP‐g‐MA). It was found that the mechanical properties are affected by filler type, filler concentration, and the interaction between filler and matrix. The tensile strength of the composite is more affected by the talc while the impact strength is influenced mostly by CaCO₃ content. The elongation at break of PP/CaCO₃ composites was higher than that of PP/talc composites. The incorporation of coupling agent into PP/mineral filler composites increased the mechanical properties. Rheological properties indicated that the complex viscosity and storage modulus of talc filled samples were higher than those of calcium carbonate filled samples while the tan δ was lower. The rheological properties of hybrid‐filler filled sample were more affected by the talc than calcium carbonate. The PP‐g‐MA increased the complex viscosity and storage modulus of both single and hybrid composites. POLYM. COMPOS., 2009. © 2009 Society of Plastics Engineers     

聚丙烯复合材料声学特性研究进展

针对聚丙烯复合材料的声学特性,对近年此类材料的研究工作进行了回顾。以增强材料种类为区分,重点综述了玻纤增强聚丙烯复合材料、天然纤维/聚丙烯复合材料和无机填料聚丙烯复合材料吸隔声性能的相关研究,归纳了目前所报道的吸声材料的相关机理,总结了影响吸声性能的主要因素以及不同材料对不同频率噪声源的应用效果。     

碳酸钙改性聚合物基复合材料的流变性能研究进展

作为使用最广泛的无机填料，碳酸钙的加入对聚合物的流变性能具有一定的影响。综述了近年来碳酸钙对聚丙烯、聚乙烯、聚氯乙烯、聚酯及多元聚合物复合体系的流变性能的影响，并展望了今后的发展方向。     

纤维素填科增强聚丙烯的性能

作者考察了纤维素填料品种、用量及粒径、偶联剂品种及用量对改性聚丙烯（ＰＰ）的力学性能、流变性能、耐热性和吸水性的影响。     

Effect of Inorganic Filler Phase on Mechanical and Morphological Properties of Binary Immiscible Polymer Blends

Summary A ternary composite composed of two immiscible organic phases, polypropylene (PP) and polyamide-6 (PA), and talc as inorganic filler is studied in terms of mechanical properties and microstructure. Effect of different filler levels (10-30 5% by weight) on tensile and flexural properties of each polymeric phase is examined while special attention is paid to immiscible PPPA blend. Mutual effect of compatibilizer and filler on properties is searched by selecting maleic anhydride grafted polypropylene (MA-g-PP) as compatibilizer. It is observed from SEM studies that inhomogeneous, course and elongated morphology of uncompatibilized composites is changed to well dispersed, fine and more homogeneous particle-in-matrix morphology via additional compatibilization effect. This unique microstructure is believed to be responsible for the improved tensile and flexural properties in blend composites. Received: 19 June 2002/Accepted: 19 January 2003 Correspondence to Nihan Nugay     

Melt rheological properties of nickel powder filled polypropylene composites

The melt rheological properties of nickel powder filled polypropylene composites were investigated. The effect of filler concentration on shear stress-shear rate data, melt viscosity and melt elasticity parameters were determined by using a capillary rheometer. The study shows that the materials follow a power law in viscous behavior over the entire range of shear rates investigated and that the viscosity increases and elasticity decreases as filler concentration is increased up to a critical value. However, beyond the critical filler content melt viscosity decreases while melt elasticity increases. The effect of temperature on the viscoelastic properties of filled polypropylene was also investigated.     

低能紫外辐照聚丙烯的结构与性能

用低能紫外辐照聚丙烯,在聚丙烯分子链上引入含氧极性基团,改善聚丙烯与填料或其他工程塑料共混的相容性。通过光电子能谱（ＥＳＣＡ）、偏光显微镜、熔体流动速率（ＭＦＲ）仪、接触角和动态粘弹谱（ＤＭＴＡ）仪、毛细管流变仪等近代分析测试,研究了紫外辐照聚丙烯的结构、形态与性能。随紫外辐照时间的增加,聚丙烯的熔体流动速率增加,接触角下降。经过紫外辐照,聚丙烯的结晶形态发生了变化。对比紫外辐照聚丙烯及与绢英粉共     

Effects of silane coupling agent and maleic anhydride‐grafted polypropylene on the morphology and viscoelastic properties of polypropylene–mica composites

In this study, morphology, and dynamic and mechanical properties of polypropylene–mica (PP–Mica) composites were investigated. To enhance the adhesion between PP and mica, maleic anhydride‐grafted PP (MAPP) and treated mica with silane coupling agent were used. MAPP (as a compatibilizer) and silane coupling agent (as a filler surface modifier) caused an interfacial bonding in the mica filled polypropylene composites. The effect of mica content, MAPP, and treated mica with silane coupling agent on the morphological properties were investigated by Scanning Electron Microscopy (SEM). The results showed that with increasing MAPP or silane coupling agent, dispersion of filler and adhesion between PP and filler were improved. Mechanical data showed that with increasing MAPP and mica treated with silane coupling agent, tensile modulus and flextural strength of composites were enhanced. Dynamic rheological behavior of composites was also investigated within the domain of linear viscoelasticity. The rheological observations indicated that the complex viscosity, storage and loss moduli increased, and tan δ decreased with increasing mica content. POLYM. COMPOS. 27:491–496, 2006. © 2006 Society of Plastics Engineers.