PVC膜结构材料老化试验及其标准和表征方法

对于PVC涂层朦结构材料光氧老化的各种不同老化试验方法（自然老化和人工加速老化）进行了系统性的介绍,针对不同试验方法给出其对应的相关参考标准;从宏观和微观两方面对老化表征方法进行了详细介绍,最后分析了膜结构材料老化研究现有不足及未来研究前景。     

高分子材料热老化方法研究及应用进展

介绍了高分子材料热老化的研究现状,例举了几种工程材料的热老化机理研究及取得的一些成果,以及研究材料热老化的数理统计方法,展望了热老化研究的发展趋势。     

尼龙老化机理研究进展

概述了环境（如光、热和应力）对尼龙老化的影响,提出了尼龙老化的一些主要机理。重点介绍了尼龙老化实验的分析测试方法,并在尼龙老化研究方法的基础上,展望了尼龙老化及防护措施的研究动向和发展趋势。     

浅谈乘用车用EPDM密封条老化与防治

乘用车密封条老化不仅影响美感,而且影响密封性能,所以越来越被重视。本文介绍了EPDM密封条老化现象、老化机理及密封条老化防治方法探讨。     

光伏组件用EVA封装胶膜的老化研究进展

综述了自上世纪80年代以来乙烯一醋酸乙烯酯共聚物（EVA）的老化机理及研究成果,介绍了光伏组件用EVA配方及结构对封装胶膜老化性能和使用寿命的影响。提出了光伏组件封装胶膜老化研究存在的问题。     

高分子材料的老化研究进展

介绍了有关高分子材料在环境因素作用下老化研究的历史,综述了橡胶、塑料及胶粘剂的环境老化行为、国内外研究的发展及现状,展望了高分子材料老化的研究动向和发展趋势.     

涂层耐老化实验常用的方法

介绍了天然曝露老化实验及人工加速老化实验常用的方法及设备,对相关的技术内容及实验要点进行了说明和比较。     

新型胺类防老剂MC在NBR中的应用

介绍了新型胺类防老剂MC的化学结构及性能,研究了MC和其他胺类防老剂对NBR硫化特性及物理机械性能、耐热空气老化及耐臭氧老化性能的影响。结果表明,加入MC可较好地提高NBR的老化性能,可完全替代4010NA等胺类防老剂。     

6 kV电动机定子绝缘诊断和剩余寿命预测

介绍了6kv电机定子绝缘老化过程。讨论了绝缘诊断的项目及具体进行的测试。介绍了某公司1台已运行9a的6kV电机诊断测试数据及评定结果。由此说明了高压电机定子绝缘老化诊断和剩余寿命预测的必要性。     

反式-1,4-聚异戊二烯的老化行为及分子模拟研究进展

概述了反式-1,4-聚异戊二烯(TPI)老化行为的研究进展,介绍了TPI的老化类型及部分老化机理,探讨了分子模拟技术在研究TPI老化过程中微观结构的优势,综述了分子模拟方法在老化机理研究方面的应用,并提出了发展建议。     

玻璃微珠改性高聚物的研究进展

通过对比分析国内外研究者在玻璃微珠改性高聚物方面的最新进展,简要概括了玻璃微珠改性高聚物的新方法,展望了玻璃微珠的应用前景。     

Fracture behavior of glass bead-filled poly(oxymethylene) injection moldings

The mechanical properties of glass bead filled poly(oxymethylene) were investigated as a function of glass bead content and glass bead diameter using injection molded test pieces. Fracture toughness measurements were made using single edge-notched tension and single edge-notched bend specimens. The effect of notch orientation with respect to the mold fill direction on fracture toughness was studied using single gate and double gate moldings. Tensile strength and flexural modulus were measured using standard test pieces. It was found that; (i) fracture toughness of the filled and unfilled polymer was relatively independent of notch orientation, (ii) the presence of weldlines in the molded test pieces did not affect the fracture toughness of unfilled polymer or its composites, (iii) fracture toughness of filled polymer was always considerably lower than that of the unfilled polymer; fracture toughness decreased sharply with increasing bead concentration, (iv) fracture toughness was not a sensitive function of glass bead diameter; it decreased slightly as bead diameter increased, (v) strain energy release rate as measured under impact decreased with increasing bead concentration, (vi) tensile strength decreased linearly with increasing glass bead concentration and was inversely proportional to the square root of the bead diameter, (vii) weldlines did not affect the tensile strength of the polymer or its composities, (viii) flexural modulus increased linearly with increasing glass bead concentration according to the Einstein equation.     

玻璃微珠填充改性聚合物研究进展

玻璃微珠作为一种新型刚性粒子,除了对聚合物有增强增韧作用,在许多方面都已引起聚合物改性工作者的关注。本文从玻璃微珠对聚合物的增韧效果、玻璃微珠填充聚合物的界面、拉伸性能、动态力学性能、流变性能、压缩性能以及其他性能等方面综述了近年来玻璃微珠填充改性聚合物的最新研究进展。     

Competing effect between filled glass bead and induced β crystal on the tensile properties of polypropylene/glass bead blends

The blends of the polypropylene (PP‐1) with various glass bead contents were prepared via melt blending. Differential scanning calorimetry (DSC) and wide‐angle X‐ray diffraction (WAXD) results indicated that the β crystal existed in PP‐1 and increased with increasing glass bead content up to 6 wt %. It was generally known that the stiffness of a polymer increased with introducing rigid particles, and the stiffness of the β crystal was less than that of the α crystal. This competing effect thus leads to the tensile modulus of PP‐1/glass bead blend decreasing with increasing glass bead content up to 6 wt %; thereafter, it increased with increasing glass bead content. For the purpose of comparison, the polypropylene (PP‐2) without the β crystal was employed to blend with glass bead. The tensile tests showed that the modulus of the PP‐2/glass bead blend increased continuously with increasing glass bead content. This result further supported that the tensile modulus behavior of PP‐1/glass bead blends resulted from the competing between the filled glass bead and the induced β crystal. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 96: 1729–1733, 2005     

新型反射保温涂料的制备与性能研究

利用高反射率的空心微珠对传统的硅酸铝保温涂料进行改性，采用正交实验设计，研究了乳液及填料对涂料反射率的影响。研究发现，填料对涂料反射率的影响次序为：空心微珠〉二氧化钛〉海泡石〉硅酸铝。乳液品种对涂料反射率影响不大，确定了最佳配方，并对其性能进行了对比测试。     

Elongational viscosity of microbead suspensions

A ‘tubeless syphon’ was used as an elongational viscometer for the purpose of measuring elongational viscosities of glass bead suspensions in dilute polymer solutions. It was found that while the shear viscosities increased, the elongational viscosities decreased very sharply with increasing bead concentration. The conclusions from the present data are then compared with the observed changes in the elastic properties of two phase molten polymer systems. A double shift procedure has been successfully adopted to correlate the experimental data.     

Unexpected behavior between polystyrene and untreated and silane‐treated glass beads in filled polymeric composites

Attempting to extend the database of work reported earlier, the practical adhesion between a glass filler, modified by various silane‐coupling agents, and a polystyrene matrix is measured and compared with predictions based on a generalized thermodynamic criterion. Measurements leading to adhesion failure are carried out using the single‐particle composite method, in which a rectangular polymer specimen containing a single untreated or silane‐treated glass bead is subjected to increasing uniaxial tensile stress until interfacial failure, as observed using a microscope, occurs at one of the poles of the sphere. The results show no difference in adhesion strength between an untreated and a silane‐treated glass bead, and the interfacial failure mechanism for the polystyrene composites is markedly different from that observed for previously studied systems. Crazes originate at the particle pole at low values of the applied stress and continue to form along the interface with continued strain. A dye test performed on filled composites confirms that the polystyrene is not wetting the untreated glass beads. More studies must be done to determine the origin of the anomalous failure and wetting behavior. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 521–526, 2003     

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     

改性空心玻璃微珠/环氧树脂复合材料力学性能研究

采用偶联剂对玻璃微珠表面进行改性处理,借助超声波振动,使改性空心玻璃微珠在环氧树脂中均匀、稳定分散,增强了玻璃微珠与环氧树脂之间的相容并探讨了改性空心玻璃微珠对环氧树脂力学性能的影响。结果表明,复合材料中改性空心玻璃微珠添加质量分数为3%时,其拉伸强度达到最大值68.54 MPa,与空白样相比提高了20.3%;冲击强度达到最大值24.42 kJ/m2,比纯环氧树脂提高了166%;KIC(断裂韧性)达到最大值2.338 MPa/m2,是空白试样的2.27倍,增韧效果较为明显。     

Mechanical and thermal properties of high‐density polyethylene toughened with glass beads

Glass beads were used to improve the mechanical and thermal properties of high‐density polyethylene (HDPE). HDPE/glass‐bead blends were prepared in a Brabender‐like apparatus, and this was followed by press molding. Static tensile measurements showed that the modulus of the HDPE/glass‐bead blends increased considerably with increasing glass‐bead content, whereas the yield stress remained roughly unchanged at first and then decreased slowly with increasing glass‐bead content. Izod impact tests at room temperature revealed that the impact strength changed very slowly with increasing glass‐bead content up to a critical value; thereafter, it increased sharply with increasing glass‐bead content. That is, the Izod impact strength of the blends underwent a sharp transition with increasing glass‐bead content. It was calculated that the critical interparticle distance for the HDPE/glass‐bead blends at room temperature (25°C) was 2.5 μm. Scanning electron microscopy observations indicated that the high impact strength of the HDPE/glass‐bead blends resulted from the deformation of the HDPE matrix. Dynamic mechanical analyses and thermogravimetric measurements implied that the heat resistance and heat stability of the blends tended to increase considerably with increasing glass‐bead content. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 2102–2107, 2003