聚合物基泡体复合材料的隔声原理与加工性能

从声学原理出发分析了传统材料的吸声和隔声性能，在此基础上，着重对聚合物基泡体复合材料的隔声原理进行了分析。由于其特殊的结构，从而改善了传统隔声材料单一的隔声特性，而具有极优越的隔声性能。此外，这种材料还具有质量轻，加工性能好等综合性能，具有很好的发展前景。     

高降噪聚合物基复合材料的制备及声学性能研究进展

从聚合物吸声材料和隔声材料两方面入手，简要介绍了多孔吸声材料、多层吸声材料、复合多孔吸声材料，单层隔声材料以及多层隔声材料的作用机理；基于现有材料性能的局限性，综述聚合物复合降噪材料的制备方法和提高降噪性能的途径；此外，结合文献介绍了层状复合降噪材料、环保型复合降噪材料和声学超材料的制备及声学特性研究进展，为今后降噪聚合物材料的研究提供了方向；最后，简要展望了高降噪复合材料的发展前景。     

聚合物基纳米复合材料的界面

对聚合物基纳米复合材料进行了简单的归类，综述了各种聚合物基纳米复合材料的界面研究进展。具体介绍了改善聚合物一热液晶聚合物(TLCP)纳米复合材料界面相容性的方法及TLCP的增韧机理、无机纳米粒子与聚合物界面相互作用对增强、增韧效果的影响及纳米粒子的增韧机理。并对纳米复合材料的界面研究提出了一些看法。     

聚合物＼无机纳米粒子复合材料研究进展

本文介绍了纳米粒子的一些特性及聚合物基纳米复合材料的研究现状,着重介绍了无机纳米粒子填充聚合物复合材料的制备方法、性能及应用前景。     

聚合物／纳米SiO2复合材料的研究进展

纳米SiO2粒子具有许多新的特性，利用它对聚合物进行改性，可以得到具有特殊性能或性能更加优异的聚合物／纳米SiO2复合材料。本文介绍了纳米SiO2特性、聚合物／纳米SiO2复合材料的制备方法以及我国聚合物／纳米SiO2复合材料的研究进展。     

无机填料对聚合物复合材料摩擦学性能的影响

参阅大量英语文献的基础上,简述了纳米无机粒子填料对聚合物及聚合物复合材料摩擦磨损性能的影响。主要包括微米/纳米无机粒子尺寸、含量及无机粒子与其它材料的协同作用对聚合物基复合材料摩擦磨损性能的影响,对科研工作者深入探索和研究聚合物复合材料的摩擦学性能有一定的参考价值。     

聚合物/纳米复合材料研究进展

本文介绍了纳米粒子的特性和制备方法，对聚合物／纳米复合材料进行了简单分类，对复合材料的制备方法，性能及应用情况进行了总结.     

无机纳米粒子与聚合物基复合材料的研究进展

综述了纳米粒子／聚合物基复合材料的制备方法及应用，并指出纳米粒子在聚合物改性中的设计思想，最后就纳米粒子／聚合物基复合材料设计发展提出一些参考意见。     

纳米材料在石油化工的应用进展（二）

1 纳米复合材料。纳米粒子具有出色的表面界面效应、小尺寸效应及量子尺寸效应，它和聚合物密度小、耐腐蚀易加工等优良特性结合后，更呈现出不同于常规聚合物复合材料的性能。由于加工简便，效果明显，产业界对聚合物纳米复合材料的市场前景持乐观态度。据预计，纳米复合材料平均年增长率超过30％，到2009年产值超过1亿英镑的纳米复合材料品种将有PP、PA、PET和PVC，充分显示了纳米材料在通用大品种塑料的高性能化和工程塑料功能化方面的重要作用和纳米复合材料巨大的潜在市场。     

隔声复合材料隔声性能的数值模拟及实验研究

根据隔声原理,制备了一种内部均布钢球的玻璃纤维增强树脂基隔声复合材料。分别使用数值模拟与实验研究的方法研究了复合材料的隔声效果。模拟数值结果和实验结果均显示了隔声复合材料有良好的隔声性能。针对阻抗管测量隔声方法,利用有限元方法得到了材料隔声量的数值模拟结果。均值材料计算结果与理论结果的比较以及隔声复合材料的计算结果与实验结果的比较,证明了该数值模拟方法在模拟材料隔声量的有效性与可行性。     

Sound insulation in polymer/inorganic particle composites. I. Theoretical model

The sound insulation behavior of inorganic particulate-filled polymer composites was analyzed by means of acoustics theory in this article to reveal the mechanisms of sound insulation. On the basis of it, a physical model of the sound wave transfer in the composite system was established, and a relevant transmission loss equation was derived. The transmission loss of the glass bead-filled polyethylene composites was estimated by using this equation. The results showed that the calculated transmission loss of the composites increased linearly with an increase of the glass bead volume fraction, and it increased nonlinearly with increasing sound frequency. The sensitivity of the transmission loss to the sound frequency was significant at low sound frequency. The transmission loss decreased nonlinearly with the size of added glass bead when the volume fraction was constant. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012     

High-damping polyurethane/hollow glass microspheres sound insulation materials: Preparation and characterization

The high-damping property of polyurethane elastomers and the low density of the hollow glass microspheres (HGM) were used to prepare the sound insulation materials in the present work. The transmission loss (TL) was measured to evaluate the HGM content on the sound insulation properties. The experimental results showed that the addition of HGM improved the hardness and compression modulus of the HGM-filled polyurethane composites, and the loss factor (tan δ) of polyurethane composites were greater than 0.9. The average transmission loss (ATL, from 63 to 6300 Hz) reached 37.32 dB when the content of HGM was 10 wt%. The ATL of the HGM-filled polyurethane composites with 15 wt% HGM in the damping control region and the mass control region were 31.94 and 46.78 dB, respectively. The synergistic effect of the microphase separation, the interfacial effect and the rigidity of polyurethane composites resulted in the improvement on sound insulation property. The polyurethane composite has a great potential application for the field of sound insulation materials.     

交替多层TPU／SEBS复合材料阻尼隔声性能的研究

用自行设计的微层挤出体系制备了热塑性聚氨酯弹性体／苯乙烯-乙烯-丁烯-苯乙烯嵌段共聚物（TPU／SEBSS）交替多层复合材料,同时准备了同组分的传统共混样品。实验结果结果表明：与传统共混样品相比,交替多层TPU／SEBS复合材料具有更宽的阻尼温域、更高的隔音系数和更优异的力学性能。并且随着层数的增加,其阻尼、隔声和力学性能提高。     

Experimental and theoretic studies on sound transmission loss of laminated mica‐filled poly(vinyl chloride) composites

The effects of dioctyl phthalate and inorganic filler, mica, on the sound insulation property of poly(vinyl chloride) (PVC) were investigated in this work. The stiffness and mass laws, which are the common theoretic tools to predict the soundproof properties of materials, were used to analyze the sound transmission loss (STL). The experimental results revealed that the stiffness and mass laws can describe well the sound insulation property of PVC/mica composites. The stiffness and surface density are important factors influencing the improvement of STL. With the increase of content of mica, STL and resonance frequency, f_mn, of PVC/mica composites increase. Moreover, the change of STL in the stiffness‐ controlled region is more obvious than that in the mass‐controlled region, because the addition of mica in PVC leads to a greater increase in the stiffness. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011     

低密度聚乙烯/氧化锌复合材料制备及其隔声性能研究

采用钛酸酯偶联剂对氧化锌（ZnO）进行表面改性,改性ZnO与低密度聚乙烯（LDPE）制备LDPE/ZnO复合材料。分析ZnO形貌及添加量对复合材料力学性能、阻尼性能、隔声性能及热稳定性的影响。结果表明：改性ZnO与LDPE具有良好的界面相容性,ZnO可以提升LDPE/ZnO复合材料的抗拉强度、隔声性能及热稳定性,四针状氧化锌（T-ZnO）添加量为5%时,复合材料的力学性能最好,综合性能最优。     

改性氧化石墨烯/丁基橡胶复合材料的制备和隔声性能研究

通过Hummers法并以硅烷偶联剂KH-550为改性剂制备改性氧化石墨烯(GO),以改性GO作为补强填料、丁基橡胶(IIR)为橡胶基体制备改性GO/IIR复合材料,并对其性能进行研究。结果表明:加入改性GO制备的复合材料的拉伸强度先增大后减小,损耗因子峰值增大,阻尼温域扩宽,隔声性能略有提升;复合材料可以有效抑制单层镀锌钢板的共振和吻合效应,基于其阻尼特性制备的约束阻尼隔声板隔声性能明显提高。     

Conductivity and percolation of nanotube based polymer composites in extensional deformations

Anisotropic conductive particles are ideal fillers to achieve electrical conductivity in polymer composites. Polymer processing is generally associated to the development of flow fields. It has been observed that flow yields an increase in resistivity. This increase is ascribed to the rotation and flow induced alignment of the particles. Indeed alignment lowers the inter-particle contact probability and thereby the conductivity of the material. The effect of laminar shear has been the topic of several studies over the last years. However, the contribution of elongational flow remains vague in spite of its ubiquity in polymer processing. We report an experimental study in which the contribution of elongational flow and extension is isolated. It is found that the resistivity of extruded composites displays a quadratic increase as a function of the draw ratio. A simple model that considers the relative translation of the particles accounts for this behavior and reveals that translation has much more dramatic consequences than rotation on the conductivity and percolation of nanocomposites.     

Preparation,characterization, and thermal properties of poly (methyl methacrylate)/boron nitride composites by bulk polymerization

Poly (methyl methacrylate)/boron nitride (PMMA/BN) composites were prepared by dispersing BN particles into methyl methacrylate monomer phase by bulk polymerization method. BN particles modified with silane coupling agent, γ‐methacryloxypropyl trimethoxy silane, were characterized by Fourier transform infrared spectroscopy and thermogravimetric analysis. Effects of modified BN particle content on thermal conductivity were investigated, and the experimental values were compared with those of theoretical and empirical models. With 16 wt% of BN particles, the thermal conductivity of the composite was 0.53 W/(m·K), 1.8 times higher than that of pure PMMA. The microstructures of the PMMA/BN composites were examined by scanning electron microscopy, energy‐dispersive X‐ray analysis, and transmission electron microscopy. Dynamic mechanical analysis and thermogravimetric analysis traces also corroborated the confinement of the polymer in an inorganic layer by exhibiting an increase in glass‐transition temperatures and weight loss temperatures in the thermogram. Mechanical properties and electrical insulation property of the PMMA/BN composites were also determined. These results showed that PMMA/BN composites may offer new technology and business opportunities. POLYM. COMPOS., 36:1675–1684, 2015. © 2014 Society of Plastics Engineers     

Effect of flyash content,particle size of flyash,and type of silane coupling agents on the properties of recycled poly(ethylene terephthalate)/flyash composites

Recent time's polymer waste disposal is a challenging task as the quantity of polymer waste is increasing day by day. Here particulate composites have been developed from recycled poly(ethylene terephthalate) filled with flyash. Flyash of different particle sizes have been used, and effect of particle size and flyash content on the mechanical properties of composites has been analyzed. Tensile and flexural properties of the composites are found to increase with increase in filler content up to 15% and after that decreases due to the agglomeration of flyash particles. SEM studies also showed good dispersion at lower loadings. The use of silane coupling agents was found to increase the flyash/WPET interaction there by increase in mechanical properties is observed. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011