ABS/St-co-NPMI二元合金研究

对ＡＢＳ／Ｓｔ－ｃｏ－ＮＰＭＩ二元合金体系的相容性进行了研究,动态力学扭辫分析（ＴＢＡ）、拉伸模量、拉伸强度和维卡耐热实验结果表明,该合金为部分相容体系。当体系内Ｓｔ－ｃｏ－ＮＰＭＩ的含量为１５％（质量）时,两组分相容性最佳,同时,合金的维卡温度比ＡＢＳ提高１０℃,拉伸强度基本相当情况下,拉伸模量明显高于ＡＢＳ。     

一种新的ABS轮速处理方法研究

进入单片机的ABS原始轮速信号,不仅可能混入畸变信号,而且叠加了高频信号。利用此原始轮速信号来控制ABS,可能导致ABS电磁阀误动作。本文综合运用周期法和频率法,先用软件剔除信号中的畸变信号,之后采用滤波加拟合的方法计算轮速及其角加速度,并以此作为控制依据。ABS实车道路实验结果表明,上述方法计算得到的车轮角加速度波动较小,能够作为控制输入并满足控制的实时性要求。     

全球移动通信系统中语音信息隐藏算法的研究

提出了一种可在全球移动通信系统(GSM)中使用的语音信息隐藏算法，即基于分析合成的能量比调整算法。算法采用了分析合成(ABS)技术，在嵌入过程中根据输入明文语音实时的调整嵌入强度，使得隐藏效果和解码效果都达到最佳值。     

附聚SBR制备ABS改性剂及其增韧PVC的性能研究

研究了不同粒径SBR制备的ABS改性剂对PVC增韧的影响，发现随着SBR粒径的增大合金的光学性能降低，而缺口冲击强度呈先上升后下降趋势，当SBR粒径为225nm时达到最大值。考察了NaCl与NaOH体系对SBR附聚的影响，发现相同浓度NaOH的条件下，随着5wt％NaCl用量提高，SBR附聚后粒径显著增加。比较了扩径前后SBR制得的ABS／PVC性能发现：扩径后的SBR制得的ABS／PVC冲击强度上升显著，同时与扩径前小粒径SBR制备的ABS／PVC相比较，其光学性能没有明显下降。     

马来酸酐接枝ABS及其应用

采用熔融法研究了马来酸酐（ＭＡＨ）接枝ＡＢＳ。结果表明：马来酸酐接枝率随ＭＡＨ添加量或引发剂过氧化二异丙苯（ＤＣＰ）的添加量垢增加而提高，但是添加量过多时，接枝率增加速率变慢；ＡＢＳ接枝马来酸酐后，冲击性能明显下降，但拉伸性能变化不大；马来酸酐接枝改性ＡＢＳ，增容ＡＢＳ／ＰＣ合金共湿物，可提高合金的缺口抗冲击强度大１．５～２．５倍。     

New developments in flame retardancy of styrene thermoplastics and foams

This review provides an insight into new developments in flame retardancy of the broad class of styrenic polymers but mostly focuses on commercially important styrene thermoplastics, on some blends based on polystyrene as well as on polystyrene foams. Although halogen‐based systems continue to dominate in flame retardancy of styrenic polymers, various alternative systems are being developed. Especially, activity is observed with phosphorus‐based flame retardants, where some systems are already commercially available. There is also significant activity with nanocomposites, where good results in retarding flame spread have been achieved, but the problem of ignition resistance has not been solved yet. Critical discussion of various flame‐retardant systems developed for styrenics is given. Copyright © 2007 Society of Chemical Industry     

ABS熔融接枝丙烯酸及在无卤阻燃ABS中的应用

以过氧化二异丙苯(DCP)为引发剂，在转矩流变仪中进行了丙烯酸(AA)熔融接枝ABS树脂的研究。纯化后样品的红外光谱分析表明，从接枝ABS产物在1720cm^-1处出现了C=O基吸收峰，证实从接枝到了ABS树脂上。研究了单体用量、引发剂用量、螺杆转速和反应温度对接枝率的影响。研究结果表明：控制适当的反应条件可使AA接枝到ABS上的量达1．8％-2．43％。将ABS—g-AA从接枝物应用于ABs／膨胀型阻燃剂(IFR)／蒙脱土(MMT)无卤阻燃体系中时发现，复合材料的力学性能得到了有效改善。     

阻燃ABS的制备及其性能的研究

以ABS750、747S为基础树脂，通过添加高效复合阻燃剂，研究这一体系的阻燃效能，同时还研究了抗冲击改性剂在复合阻燃体系的效果。制备了通用级、挤出级阻燃ABS工程塑料，测试结果表明，此系列阻燃ABS的阻燃性能达到了UL94V0级，综合性能优异。     

Overload effect on the fatigue crack propagation of PC/ABS alloy

The effect of single overload within an otherwise constant amplitude loading sequence on the fatigue crack propagation (FCP) behavior of the alloy of polycarbonate and acrylonitrile-butadiene-styrene (PC/ABS) is experimentally investigated in this paper. An improved compliance method is employed to measure the fatigue crack length of the specimen. Optical and scanning electron microscopes are used to observe the features of crack surface and the process of crack tip deformation. The overload waveform has slight effect, while the overload ratio has great effect on the crack growth retardation. A small crack increment is produced during overloading. The crack growth rate reduces quickly, and then increases gradually until it reaches the steady crack growth rate level when the loading recovers to normal constant amplitude fatigue loads. Porous or dimple features govern the fatigue crack surfaces.     

ABS灵动商务系统在广电网络中的应用

介绍了ABS灵动商务系统的独有特点,并阐述其在广电网络中针对客户、业务、网络资源、工程、企业信息、外部接口等的管理.