PET／PC共混物的辐射效应研究

研究了经溶液共混制备的聚对苯二甲酸乙二醇酯／聚碳酸酯（ＰＥＴ／ＰＣ）共混物的辐射效应。结果表明：ＰＥＴ／ＰＣ共混物在辐照过程中未发生酯交换反应和交联反应，但有降解反应发生。在研究的剂量范围内，辐照对ＰＥＴ／ＰＣ共混物中ＰＥＴ和ＰＣ的晶体形态影响不明显。     

ABS／PC／MMA类共聚物Q三元共混体系的性能和形态

本文研究了ABS/PC甲基丙烯酸甲酯(MMA)共聚物Q三元共混物的性能与Q含量的关系,对不同Q含量下共混物的拉伸、冲击、弯曲、耐热、熔体指数等性能进行了测试,并用扫描电镜观察了该三元共混物的形态。结果表明,加入共聚物Q可增加共混体系的相容性,在适当组成下可使共混物的弯曲强度提高到原来的1.7倍,同时其他力学性能有所提高或不受损失;共混物的熔体指数能符合工业生产要求。从经济角度看,Q价格也较低。因而ABS/PC/Q三元共混物可望开发为具有重要实际意义的塑料合金。     

热塑性聚氨酯增韧改性聚甲醛的研究

本文对ＰＯＭ／ＴＰＰＵ／Ｚ－３共混体系进行了研究，结果表明，增容剂Ｚ－３可控制共混体系中分散相的颗粒尺寸及分布，起着聚集剂的作用。随着ＴＰＰＵ用量的增加，共混合金的结晶度和拉伸强度增降低，缺口冲击强度出现峰值，ＭＩ下降，当ＰＯＭ／ＴＰＰＵ／Ｚ－３＝１００／７／０．４９时，共混合金的缺口冲击强度达到最大值。     

HDPE／PA6共混型塑料阻隔材料

以自制接枝聚乙烯为增容剂，高密度聚乙烯为基材，尼龙６为阻隔材料，用挤出法，制取ＨＤＰＥ／ＰＡ６共混材料。ＭＰＥ的加入，增大了相间的粘接改善了力学性能，使材料具有良好的阻渗性能。     

Thermal and mechanical properties of polyhedral oligomeric silsesquioxane (POSS)/polycarbonate composites

A series of composite materials were produced incorporating polyhedral oligomeric silsesquioxane (POSS) derivatives into polycarbonate (PC), by melt blending. Significant differences in compatibility were observed depending on the nano-scale filler's specific structure: trisilanol POSS molecules generally provided better compatibility with PC than fully-saturated cage structures, and phenyl-substituted POSS grades were shown to be more compatible with PC than fillers with other functional groups. Trisilanolphenyl-POSS/PC composites possess the best overall performance among the POSS materials tested. The high compatibility between the trisilanolphenyl-POSS and polycarbonate matrix results in generation of transparent samples up to 5 wt% POSS content. Slightly enhanced mechanical properties including tensile and dynamic mechanical modulus are observed with the increase of trisilanolphenyl-POSS loading at the cost of decreasing ductility of the nanocomposites. Importantly, upon orientation of the PC/POSS nanocomposite, crystallization of POSS within the oriented material results—this observation is consistent with a growing number of observations which suggest that ‘bottom-up’ formation of structures incorporating multiple POSS cages result from orientation of these nanocomposites, and that the hybrid organic-inorganic inclusions may be at the heart of observed nano-scale reinforcement.     

聚碳酸酯与高支化聚苯乙烯共混物热性能的研究

用示差扫描量热法和热失重法分析了聚碳酸酯(PC)与高支化苯乙烯共混物的热性能。研究结果表明：共混物的玻璃化转变温度比基体PC的玻璃化转变温度低,但下降幅度不是很大,最高低4℃；共混物的热分解温度比基体PC的热分解温度低,但是都在474℃以上,共混物保持了基体材料PC优异的热性能。     

PC／PA1010共混物的热行为

利用热失重、微分热失重和显示扫描量热法研究了聚碳酸酯／尼龙１０１０共混物的热行为和解降解过程。结果表明：共混物在６００℃以下分两步降解，降解温度随尼龙１０１０用量增加有下降趋势；共混物的熔点随尼龙１０１０用量增加而升高。     

TPU／ABS塑料合金的研制

通过熔融共混法制备了ＴＰＵ／ＡＢＳ塑料合金，并以此材料试制了塑料纬纱管。讨论了ＴＰＵ含量，共混工艺等因素对合金力学性能和形态结构的影响，结果表明，在ＴＰＵ含量为５－２０％时，所制ＴＰＵ／ＡＢＳ塑料合金具有良好的综合性能，尤其在冲击强度和耐磨性能方面都有明显改进。用此材料制造的纬纱管，经检测，各项性能均达到了各颁标准，经有关厂家初步应用认为，达到了纺机配件的使用要求。     

尼龙/聚丙烯合金的性能与制备

介绍国外各种尼龙/聚丙烯合金的性能和制备工艺。聚合物合金的相容性原理,以及PA/PP合金适用的各种相容剂。     

聚苯硫醚／聚砜共混物的动态黏弹行为及相容性研究

研究了聚苯硫醚／聚砜熔融共混物的的加工流变行为以及共混物在不同温度下的动态黏弹响应；并对其相容性作出判断。结果表明，聚苯硫醚的加入显著改善了共混物的流动性，使其可在较低温度下成型；熔融态共混体系的相容性较差，固态条件下的相分离程度及损耗因子峰值大小依赖于组成变化。