LLDPE-g-GMA对PA66/PE性能影响的研究

研究了LLDPE—g—GMA(甲基丙烯酸缩水甘油酯)对PA66／PE相容性的影响。结果表明LLDPE-g-GMA是PA66／PE合金良好的反应型增容剂，对于PA66／PE合金，LLDPE—g-GMA的加入使合金的拉伸强度、弯曲强度、Izod缺口冲击强度有明显提高。但刚性和耐热性略有降低，并且DMA谱图证实了LLDPE—g-GMA对PA66／PE的反应增容作用，计算出了PA66／PE玻璃化转变活化能。     

K系维生素中间体β-甲基萘醌合成的研究进展

综述了K系维生素中间体β—甲基萘醚(2—甲基—1，4—萘醚，维生素K；)的合成方法及其研究进展，并就当前工业生产技术中存在的问题，提出了适宜而合理的发展方向。     

The morphology and mechanical properties of dynamic packing injection molded PP/PS blends

As a part of long-term project aimed at super polyolefin blends, in this work, we report the mechanical reinforcement and phase morphology of the immiscible blends of polypropylene (PP) and polystyrene (PS) achieved by dynamic packing injection molding (DPIM). The shear stress (achieved by DPIM) and interfacial interaction (obtained by using styrene-butadiene-styrene (SBS) as a compatibilizer) have a great effect on phase morphology thus mechanical properties. The shear-induced morphology with core in the center and oriented zone surrounding the core was observed in the cross-section areas of the samples. The phase inversion was also found to shift towards lower PS content under shear stress, at 70 wt% in the core and 30 wt% in the oriented zone, compared with 80 wt% for static samples (without shear). The tensile strength, tensile modules and impact strength were found largely increase by means of either shear stress or compatibilizer. The PS particle size is greatly reduced with adding of SBS, and the reduced particle size results in greater resistance to deformation, which causes the co-continuous structure at oriented zone change into droplet morphology. The morphology resulting from blending and processing was discussed based on effect of interfacial tension, shear rate, phase viscosity ratio and composition. The observed change of mechanical properties was explained based on the combined effect of phase morphology (droplet-matrix or co-continuous phase) and molecular orientation under shear stress.     

S2/TDE85复合材料耐自然库存与加速湿热老化的性能研究

本文对高强2号玻璃纤维（S2）增强环氧（TDE85－MCD体系）基复合材料单向板经自然库存与加速湿热老化后力学性能的变化进行了研究。研究结果表明，温度和湿度的作用会使单向板的拉伸、弯曲、剪切性能有所降低；温度越高、湿度越大，力学性能变化越大；可用加速湿热试验值来表征自然库存条件下的试验值。     

超强吸水性树脂的制备及吸水性能研究

合成了以丙三醇为交联剂的聚丙烯酸类高分子吸水剂,讨论了丙三醇作交联剂时,引发剂用量、 交联剂用量、中和度、反应温度及时间对树脂吸水能力的影响。所制树脂吸水率达800g/g。对0.9％食盐水吸水 率最大为70g/g。     

SiC晶须对Si3N4陶瓷基复合材料机械强度的影响

制备了含10vol％,20vol％及30vol％SiC晶须的Si_3N_4基复合材料,对其室温及高温机械强度的测试研究表明,SiC晶须对基体的高温机械性能有明显的增强作用。含20vol％SiC晶须的复合材料1200℃下强度达780MPa,比基体材料提高50％。通过SEM和TEM研究,讨论了SiC晶须增强的原因。     

CAN总线与以太网互联网关的设计

电梯远程监控系统的关键在于电梯CAN总线与以太网的互联,基于此背景提出一种高性能低成本的解决方案。首先,给出系统总体结构和硬件设计,然后详细阐述软件设计,完成基于μC/OS-II操作系统的嵌入式uIP协议栈的移植开发,并提供软件系统的具体优化方法。最终实现以LPC2368为微处理器和DP83848C以太网控制芯片为核心的CAN总线与以太网互联网关,为工业现场总线与以太网的互联提供了一种可行的解决方案。     

新型环氧防腐涂料的研究

采用在环氧树脂中加入纳米复合铁钛粉防锈颜料WD—D-325、固化剂、制备了新型环氧树脂防腐涂料。由于纳米技术的特性，该防腐涂料具有较高的防腐性、优异的附着力和柔韧性。实验确定了复合铁钛粉防锈颜料在环氧防腐涂料中的添加量。作为新型的环保颜料，复合铁钛粉防锈颜料可以替代红丹、锌铬黄等颜料。     

纳米蒙脱土/环氧树脂胶粘剂制备工艺优化选择

介绍了制备纳米蒙脱土/环氧树脂胶粘剂的方法,并通过正交试验的方法分析了固化时间、固化温度、搅拌时间、搅拌温度对纳米蒙脱土/环氧树脂胶粘涂层拉伸剪切强度的影响,给出了上述四个工艺参数的最佳工艺规范并通过试验验证了结论。