填充HIPS结构泡沫材料的配方及改性机理研究

采用扫描电镜，Brabender流变仪等现代仪器方法对填充高抗冲改性聚苯乙烯（HIPS）共混体系的亚微观形态结构和流变特性进行了表征，探讨了填充HIPS发泡复合材料的最佳配方及增强改性机理。结果表明，所选配方的HIPS发泡材料具有质轻，仿木，刚性强等特点，是工艺吕理想的合成材料。     

低烟无卤阻燃HIPS的研究

采用熔融法制备包括有机蒙脱土（OMMT）、红磷（RP）和酚醛树脂（PFR）体系的阻燃高抗冲聚苯乙烯（HIPS）复合材料，用基于耗氧原理的锥形量热仪研究复合材料的阻燃性能，用扫描电子显微镜观察了复合材料燃烧残余物的微观结构形态。结果表明，与纯HIPS相比，制备的HIPS／OMMT复合阻燃材料阻燃性能有所提高，但提高幅度有限；与HIPS／OMMT复合阻燃材料相比，添加RP和PFR的阻燃RP／PFR／HIPS／OMMT复合材料的热释放速率及其峰值、质量损失速率和生烟速率等燃烧性能参数继续降低，且火灾性能指数大幅提高，表现出低烟和高效的阻燃特点。     

PS、HIPS塑料用漆的探讨

本文针对普通树脂基料在PS、HIPS塑料上附着力差,PS、HIPS塑料对溶剂敏感等特点,探讨了PS、HIPS塑料用漆中各种原料的选择要点,给出了制漆配方以及漆膜性能。     

低顺橡胶的工业生产与应用

介绍了茂名橡胶装置低顺式聚丁二烯橡胶(LCBR)的工业化生产及国内应用情况，并且与国外LCBR的质量及在HIPS改性性能上进行了对比分析。针对国产LCBR在生产和应用上存在的问题，分析了原因，对产品质量进行了改进，取得了较好效果。     

冰箱用HIPS的增韧改性研究

以高抗冲聚苯乙烯（HIPS）为基体树脂，用螺杆挤出的方法研究了一系列增韧剂对HIPS的增韧效果，结果表明乙烯丙烯酸甲酯（EMA）对HIPS的增韧效果较为明显，当体系中EMA含量达到20份时，所制得超韧HIPS材料具有最优异的综合性能。并进一步用增韧后的HIPS进行挤出生产实验，发现增韧后的聚苯乙烯在板材生产加工过程中与HIPS相比，其工艺生产条件及加工后的板材性能基本没有发生变化。     

超韧聚苯乙烯的制备工艺研究

以高抗冲聚苯乙烯（HIPS）为基体树脂，采用双螺杆挤出机研究了抗冲击改性剂SBS对HIPS的增韧效果，探讨了制备工艺条件对超韧HIPS材料性能的影响。结果显示，SBS对HIPS具有优异的增韧效果，当其用量达到40份时，能使HIPS体系的常温简支梁缺口冲击强度达到42．1kJ／m^2。通过添加高效流变控制剂体系，使HIPS／SBS体系的流动性大大提高。采用低剪切的螺杆组合，低的机头压力，中低的螺杆转速和半饥饿喂料法，在较低的温度下制备所得的超韧HIPS材料具有优异的低温韧性和优良的综合性能。     

HIPS生产中落锤冲击强度影响因素的讨论

本文简要介绍高抗冲型聚苯乙烯（HIPS）的生产工艺，分析影响HIPS落锤冲击强度的因素。提出了提高并稳定落锤冲击强度的有效措施。质量跟踪结果表明，HIPS落锤冲击强度明显改善。     

HIPS/纳米蒙脱土复合材料的研究

添加不同种类，不同数量的纳米蒙脱土，混炼制得HIPS／纳米蒙脱土复合材料，以改善高抗冲聚苯乙烯（HIPS）的性能，测试了其力学性能，热稳定性性。结果表明，添加3％烘干的蒙脱土Cloisite 30A的HIPS／纳米蒙脱土复合材料具有较好的综合力学性能，可作为工程塑料使用；HIPS／纳米蒙脱土复合材料的热稳定性与阻燃性有所改善，添加5％烘干的蒙脱土Cloisite 15A的HIPS／纳米蒙脱土复合材料具有较好的阻燃性。     

HIPS伸长率的影响因素及控制

一、前言高抗冲聚苯乙烯(HIPS)对聚苯乙烯而言,是一种韧性材料。它作为韧性材料,除有较高的冲击强度外,还要有一定的断裂伸长率。在制定产品质量指标时,对这两项指标都有要求。我厂引进的HIPS树脂装置,开车两年多的情况表明,产品的冲击强度容     

HIPS/LLDPE中DCP与SBS的协同作用及其共混物性能

考察了不同加料方式、过氧化二异丙苯（DCP）和（苯乙烯/丁二烯/苯乙烯）嵌段共聚物（SBS）含量、加工温度、螺杆转速对高抗冲聚苯乙烯（HIPS）/线性低密度聚乙烯（LLPDE）共混物力学性能的影响。结果表明，利用DCP及SBS的协同作用，可有效地提高HIPS与聚烯烃的相容性，改善HIPS的韧性，当HIPS/LLPDE/SBS=70/30/10、DCP用量为HIPS和LLDPE质量的0.05%，加工温度（后两段）为180℃，螺杆转速为80r/min时，共混物力学性能较高。     

HIPS生产工艺及其专用橡胶简评

对生产ＨＩＰＳ的机械共混和本体接枝共聚合工艺，以及生产ＨＩＰＳ专用橡胶的性能进行了简评，建议国内尽快开发ＨＩＰＳ专用镍系顺丁橡胶生产技术，以满足市场需求。     

OMMT对HIPS发泡工艺的影响

研究了注射温度对高冲击强度聚苯乙烯(HIPS)及其与纳米有机蒙脱土(Nano-OMMT)复合发泡材料的泡孔直径、密度和尺寸的影响。结果表明:与纯HIPS发泡材料相比,HIPS/Nano-OMMT复合发泡材料的泡孔平均直径更小、密度更大、尺寸分布更均匀;HIPS/Nano-OMMT复合材料比纯HIPS具有稳定和更宽的加工温度,在170~185℃都能获得高质量的发泡材料。     

Isothermal crystallization, melting behavior and crystalline morphology of syndiotactic polystyrene blends with highly-impact polystyrene

Syndiotactic polystyrene (sPS) blends with highly-impact polystyrene (HIPS) were prepared with a twin-screw extruder. Isothermal crystallization, melting behavior and crystalline morphology of sPS in sPS/HIPS blends were investigated by differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD) and polarized optical microscopy (POM). Experimental results indicated that the isothermal crystallization behavior of sPS in its blends not only depended on the melting temperature and crystallization temperature, but also on the HIPS content. Addition of HIPS restricted the crystallization of sPS melted at 320 °C. For sPS melted at 280 °C, addition of low HIPS content (10 wt% and 30 wt%) facilitated the crystallization of sPS and the formation of more content of α-crystal. However, addition of high HIPS content (50 wt% and 70 wt%) restricted the crystallization of sPS and facilitated the formation of β-crystal. More content of β-crystal was formed with increase of the melting and crystallization temperature. However, α-crystal could be obtained at low crystallization temperature for the specimens melted at high temperature. Addition of high HIPS content resulted in the formation of sPS spherulites with less perfection.     

Degradation of high‐impact polystyrene with processing and its recovery via the addition of styrene–butadiene rubber and styrene–ethylene–butylene–styrene block copolymer

This work was divided into three parts. First, high‐impact polystyrene (HIPS) was submitted to a series of extrusion cycles with the objective of evaluating the consequent variations in its thermal and mechanical properties. The results showed slight variations in both the thermal and mechanical properties of HIPS. Second, degraded HIPS/styrene–ethylene–butylene–styrene (SEBS) blends and degraded HIPS/styrene–butadiene rubber (SBR) blends were prepared to evaluate the influence of the elastomeric concentration on the polymer's properties. The incorporation of SEBS or SBR allowed the recovery of the initial properties shown by virgin HIPS. Finally, blends of degraded HIPS with 2 wt % SEBS or SBR were extruded through four cycles. The mechanical properties remained constant with 2% SEBS added, whereas the mixtures of HIPS with 2% SBR showed an increase in the tensile strength as the number of extrusion cycles increased. The Vicat softening temperature decreased in both cases. The use of differential scanning calorimetry permitted the observation of differences in the crosslinking reactions of different samples as a function of the number of extrusion cycles. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011     

发泡量对HIPS及其复合材料微发泡行为的影响

采用化学发泡法制备出高冲击强度聚苯乙烯(HIPS)微发泡材料及HIPS/纳米有机蒙脱土(nano-OMMT)复合微发泡材料。研究了发泡量对HIPS及其复合材料微发泡行为的影响。结果表明:随着发泡量的增加,发泡材料呈现欠发泡、均衡发泡、过发泡状态。发泡量取10%时,复合材料的发泡效果最好。nano-OMMT在发泡过程中起到成核剂的作用,促进泡孔成核,有效地改善了发泡质量。     

Effect of HIPS on polymorphism,melting, and crystallization behavior of sPS crystallized dynamically from melting state

Syndiotactic polystyrene/highly‐impact polystyrene (sPS/HIPS) blends were prepared with a twin‐screw extruder. Differential scanning calorimetry and wide angle X‐ray diffractometry were used to investigate the effect of the maximal melting temperature, the content of HIPS and cooling rates on the melting and crystallization behavior and crystal forms of sPS. The experimental results indicated that the addition of low content of HIPS induced the formation of more α‐crystal, whereas the addition of high content of HIPS favored the formation of β‐crystal for sPS/HIPS blends crystallized dynamically from low melting temperature. Both sPS and its blends produced only β‐crystal as crystallized from high melting temperature. The crystallization temperatures of sPS and its blends decreased as the melting temperature increased, favoring the formation of β‐crystal. Higher temperature of sPS crystallization favored the formation of more content of α‐crystal while lower temperature of sPS crystallization produced more content of β‐crystal. Cooling rates showed no significant effect on the crystal form of sPS and its blends, but influenced the melting behavior of both sPS and its bends. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 3353–3361, 2007     

Influence of the surface modification of a filler on the properties of high‐impact polystyrene composites

A novel technique of surface modification was used to treat nanomodified aluminum trihydrate (nano‐CG‐ATH). The results of the surface modification were characterized with transmission electron microscopy and Fourier transform infrared spectra. The effects of the surface modification on the properties of high‐impact polystyrene (HIPS) composites were studied with limiting oxygen index (LOI) and mechanical tests. The dispersion of nano‐CG‐ATH in the HIPS matrix and the interfacial adhesion between them were observed with transmission electron microscopy and scanning electron microscopy. The experimental results demonstrate that the surface of nano‐CG‐ATH was successfully grafted by an organic substance, and the dispersion of treated nano‐CG‐ATH in ethanol was better than that of untreated nano‐CG‐ATH. At high loadings, the mechanical properties and LOI values of the HIPS composites with treated nano‐CG‐ATH were higher than those of the HIPS composites with untreated nano‐CG‐ATH. The dispersion of treated nano‐CG‐ATH in the HIPS matrix was better than that of untreated nano‐CG‐ATH in the HIPS matrix. Also, the interfacial adhesion between the HIPS matrix and treated nano‐CG‐ATH was better than that between the HIPS matrix and untreated nano‐CG‐ATH. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009     

高抗冲聚苯乙烯的研制 Ⅲ.橡胶粒径分布及其对HIPS性能的影响

采用本体-悬浮法研究了高抗冲聚苯乙烯(HIPS)所用橡胶的结构及工艺条件对产品性能的影响。研究发现,随橡胶中乙烯结构含量的增加,HIPS橡胶接枝率增加;低顺胶HIPS橡胶相与PS相的相容性较差,高顺胶HIPS橡胶相与PS相的相容性好;从力学性能看,各种胶的HIPS拉伸性能相似,高顺胶的HIPS冲击性能最好,低顺线型胶次之,低顺星型胶较差。聚合过程中搅拌速度、橡胶用量及引发剂种类对HIPS的结构及性能也有一定影响。