聚丙烯T38F产品质量改进

针对聚丙烯T38F产品在加工过程中出现的质量波动问题，分析了不同批次T38F的相对分子质量及其分布、流变性能和挤出加工性能。结果表明，产品相对分子质量及其分布波动较大是造成加工性能不稳定的内在原因。经过调整催化剂体系、抗氧剂体系及相关工艺条件，使T38F产品质量稳定，达到指标要求。     

锂电池隔膜专用聚丙烯的工业化开发

通过分析国内锂电池隔膜专用聚丙烯的性能及调研下游厂家的应用情况,确定了锂电池专用聚丙烯T98F的经济技术指标。根据分析结果以及140 kt/a聚丙烯装置二线的生产工艺特点,制订了生产技术方案和工艺参数控制方案。通过工艺参数的调整保证了产品质量稳定。工业化试生产的产品性能测试表明:T98F的所有物性指标与参比树脂相当,满足锂电池隔膜的生产要求。     

国产催化剂DQ-Ⅳ在聚丙烯装置上的应用

将国产催化剂DQ-Ⅳ应用于双环管工艺技术聚丙烯装置生产T30S、T36F产品。分析了工艺条件对产品性能的影响,并与采用进口催化剂生产的产品进行了对比。结果表明,国产催化剂的活性高,氢调敏感性较好,聚丙烯产品的粒径分布较好,可以替代进口催化剂。     

独山子石化试产聚丙烯锂电池隔膜专用料

正2016年6月23日,独山子石化公司研究院的科研人员正在对新开发试产的聚丙烯锂电池隔膜专用料T98F进行产品性能测试,经过为期半个多月的产品性能评测,熔指、等规度、灰分等主要指标满足锂电池隔膜产品质量要求。6月上旬,独山子石化公司在其14万t/年聚丙烯装置上,采用我国自有的第二代环管仿SPHERIPOL-Ⅱ工艺生产技术,运用新型超高活性催化剂,首次成功试产了聚丙烯锂电池隔膜专用料T98F近     

CS-Ⅱ催化剂在聚丙烯装置上的应用

将国产催化剂CS-Ⅱ应用于200kt／a聚丙烯装置生产T30S、T36F产品,分析了工艺条件对产品性能的影响,并与使用进口催化剂的情况进行对比。结果表明,国产催化剂CS-Ⅱ活性高,氢调性好,可以替代进口催化剂使用。     

研究探讨新配方助剂,解决T38F产品后加工膜卷发红问题

大庆石化分公司聚丙烯装置采用单环管液相本体均聚工艺,通过对影响产品质量因素的调查,研究探讨T38F产品后加工膜卷发红问题,结合公司聚丙烯装置的具体实际情况,研制开发出新配方助剂,降低了T38F产品的黄度指数,解决了产品后加工膜卷发红的问题,改善了产品质量。[编者按]     

BOPP专用料的生产开发

介绍了聚丙烯双向拉薄膜（BOPP）专用料T46F－M的生产工艺和BOPP的发展现状，分析了BOPP专用料性能上存在的问题，并提出了相应的解决办法。     

薄膜专用PP树脂加工性能的凝胶渗透色谱评价

用凝胶渗透色谱测定了不同批号的薄膜专用聚丙烯(PP)树脂T38F的相对分子质量及其分布,评价了产品的相对分子质量及其分布对加工性能的影响.测定结果的重复性和再现性良好.根据分析结果调整相关工艺条件后生产的PP T38F能够满足用户的加工要求.实验结果表明:薄膜专用PP树脂的重均分子量(Mw)控制在(25.0～29.0)...     

BOPP烟膜专用树脂的工业化生产

工业化生产了双向拉伸聚丙烯烟膜专用树脂F280T,采用凝胶渗透色谱仪和差示扫描量热仪等研究了产品的相对分子质量及其分布、熔点及物理和光学性能,并与国内外同类树脂进行了对比。结果表明:F280T的物性指标接近或优于对比试样;相对分子质量分布介于2个对比样之间,与进口试样更接近;熔点与进口试样相当,均为无规共聚产品;光学性能与进口试样相近。     

九江石化聚丙烯装置结束检修开工生产

4月16日，中国石化股份公司九江分公司聚丙烯装置结束检修，比计划提前一天进入开工生产阶段，18日顺利生产出了合格的聚丙烯产品。目前，九江石化聚丙烯装置处于满负荷生产，生产膜料T36F、拉丝T30S等透明聚丙烯专用料和涂覆料。     

抗冲聚丙烯管材专用料的开发与试生产

采用红外光谱仪、示差扫描量热仪、升温淋洗分级测试仪和凝胶渗透色谱仪等分析手段,对抚顺石化公司试生产的抗冲聚丙烯管材专用料EP8103和市场上进口的同类专用料的结构和性能进行了对比分析研究。研究结果表明:EP8103是乙丙嵌段共聚物,产品综合性能与进口同类产品相当,低温冲击性能优良。在试生产过程中,确定了生产EP8103的关键控制参数,工艺控制平稳。     

Study on the mechanical properties and microstructure of high-performance carbon fiber/epoxy composites

A high-toughness epoxy has been prepared using carboxyl-terminated butadiene acrylonitrile (CTBN) as a toughening agent to modify the AG-80 epoxy resin. High-performance carbon fiber/epoxy (CF/EP) composites are fabricated using the CTBN-toughened epoxy resin as the matrix and two types of CF, namely, T800SC and T800HB, as reinforcement. The mechanical properties of the matrix, surface properties of the CFs, tensile properties, and fracture morphologies of the composites are systematically investigated to elucidate the key factors influencing interfacial bonding in high-performance CF/EP composites. The results reveal that the most significant improvement in toughness is achieved when the CTBN content is 6.90 wt.% in the epoxy resin. Owing to the high content of polar functional groups and excellent surface wettability of T800SC, the T800SC/EP composite exhibits superior mechanical properties compared with the T800HB/EP composite.     

环氧树脂对聚对苯二甲酸丁二酯共混物的增韧增强研究

利用环氧树脂(EP)与聚对苯二甲酸丁二醇酯(PBT)的相容性,考察了EP对共混物PBT/ABS-gGMA性能的影响。采用动态力学分析仪(DMA)、旋转流变仪、Haake流变仪和扫描电镜(SEM)研究共混物的性能。DMA、DSC和旋转流变仪的测试结果表明PBT与EP是相容的;流变性能测试结果表明EP对PBT/ABS-g-GMA共混体系起到增容作用;SEM观察结果发现少量的EP加入对共混物的相形态没有明显影响,分散相在PBT基体中均匀、稳定分散,而过量的EP使共混物中出现一些较大的相区,分散相发生团聚;力学性能测试结果表明适量的EP就能明显提高共混物的冲击性能,而过量的EP又会使共混物的冲击强度下降。     

Sensing and surface morphological properties of a poly[(9,9‐dioctylfluorenyl‐2,7‐diyl)‐co‐bithiophene] liquid‐crystalline polymer for optoelectronic applications

The sensing properties of a poly[(9,9‐dioctylfluorenyl‐2,7‐diyl)‐co‐bithiophene] (F8T2) polymer were investigated at different concentrations and volume percentages. The effects of the concentrations and volume percentages on the sensing parameters were investigated. The sensitivities of F8T2 were found to be 3.190, 1.434, and 0.362 dB/vol % at 290, 580, and 940 nm, respectively. The response of the F8T2 increased with increasing concentration. F8T2 exhibited good sensitivity and response behaviors. Then, the optical parameters based on the refractive indices of the F8T2 at different molarities were calculated. The dispersion energy, moment of the dielectric constant optical spectrum (M_?1, M_?3), oscillator strength, and contrast of the F8T2 increased with increasing molarity, whereas the average excitation energy or single‐oscillator energy decreased with increasing molarity. The surface morphological properties of the F8T2 polymer film were investigated, and the roughness parameters were obtained. The F8T2 polymer could be used in the fabrication of various sensors because of the good solubility, sensitivity, and response behaviors. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 41659.     

表面活性剂影响磁粉共凝聚F46乳液的研究

使用十六烷基三甲基溴化铵(CTAB)、烷基酚聚氧乙烯醚(NP)和辛基酚类聚氧乙烯醚(S-13)3种不同表面活性剂乳化铁硅铬磁粉,通过共凝聚方法制备四氟乙烯与六氟丙烯共聚物(F46)包覆乳化后磁粉(F46/铁硅铬磁粉)的复合材料。通过扫描电子显微镜(SEM)表征共凝聚粒子的形貌,通过热重分析仪(TG)测试共凝聚粒子的热稳定性,通过矢量网络分析仪(VNA)测定样品的磁介性能。结果表明:在共凝聚过程中,阳离子型表面活性剂CTAB不仅对铁硅铬磁粉进行乳化,利于磁粉分散,而且在整个共凝聚体系起到破乳作用。采用CTAB乳化磁粉的共凝聚反应,出现凝胶的时间为第12 min,整个共凝聚过程耗时33 min,相比于其他共凝聚反应,缩短了反应时间;且加入质量分数10%乳化剂的磁粉剩余质量分数为0.59%,磁粉残余量最低。F46/铁硅铬磁粉复合材料的磁导率在18.00 GHz下还能保持在1.10左右,介电常数在1.00~18.00 GHz范围内稳定在2.30以下,F46/铁硅铬磁粉复合材料的磁介性能有所改善。     

Synthesis of fluorine contained hyperbranched polysiloxane and their effect on the thermal conductivity of epoxy resins

To improve the thermostability properties of epoxy (EP) resin, two kinds of novel hyperbranched polysiloxanes containing fluorine were prepared via the sol–gel process and the convenient transesterification process, respectively (F-HBPSi-1 and F-HBPSi-2). These two prepared F-HBPSi were then used as modifier phased to blend with EP to obtain two new series polymer alloys F-HBPSi-1/EP and F-HBPSi-2/EP. The dielectric properties and thermal conductivities of the cured F-HBPSi/EP resins were measured, while their thermal properties were also investigated by thermogravimetry (TG). The results showed that both the thermal conductivities and the thermostability properties of these two F-HBPSi/EP were increased effectively, without further damaging their dielectric properties. Meanwhile, the F-HBPSi-2/EP exhibits better thermal conductivities and thermostability properties than that of F-HBPSi-1/EP. The improved overall performance of F-HBPSi-2/EP can be attributed to the low viscosity and excellent compatibility of F-HBPSi-2, as well as the good synergism between fluorine and silicon.     

Synthesis,characterization and properties of organoclay‐modified polyurethane/epoxy interpenetrating polymer network nanocomposites

organoclay‐modified polyurethane/epoxy interpenetrating network nanocomposites (oM‐PU/EP nanocomposites) were prepared by adding organophilic montmorillonite (oMMT) to interpenetrating polymer networks (IPNs) of polyurethane and epoxy resin (PU/EP) which had been prepared by a sequential polymerization technique. Wide‐angle X‐ray diffraction (WAXD) and transmission electronic microscopy (TEM) analysis showed that the interpenetrating process of PU and EP improved the exfoliation and dispersion degree of oMMT. The effects of the NCO/OH ratio (isocyanate index), the weight ratio of PU/EP and oMMT content on the phase structure and the mechanical properties of the oM‐PU/EP nanocomposites were studied by tensile testing and scanning electronic microscopy (SEM). Water absorption tests showed that the PU/EP interpenetrating networks and oMMT had synergistic effects on improvement in the water resistance of the oM‐PU/EP nanocomposites. Differential scanning calorimetry (DSC) analysis showed that PU was compatible with EP and that the glass transition temperature (T_g) of the oM‐PU/EP nanocomposites increased with the oMMT content up to 3 wt%, and then decreased with further increasing oMMT content. The thermal stability of these nanocomposites with various oMMT contents was studied by thermogravimetric analysis (TGA), and the mechanism of thermal stability improvement was discussed according to the experimental results. Copyright © 2005 Society of Chemical Industry     

EP/改性DDM体系的固化反应动力学及性能研究

采用非等温DSC(差示扫描量热)法对EP(环氧树脂)/改性DDM(4,4′-二氨基二苯基甲烷)体系的固化反应过程进行了跟踪。采用Kissinger、Ozawa、Crane和T-β(温度-升温速率)外推法等得到该固化体系的动力学参数和固化工艺条件,并对其力学性能和热变形温度进行了测定。结果表明:EP/改性DDM体系的表观活化能为49.43 kJ/mol,反应级数为0.869,固化条件为"85℃/2 h→125℃/2 h",热变形温度为130℃;与EP/DDM体系相比,该固化体系的表观活化能降低了7.0%,热变形温度下降了16.1%,拉伸强度和压缩强度提高了20%以上,而弯曲强度和弯曲模量基本上保持不变。     

PU/EP型水声吸声材料动态模量和声学参数的实验研究

采用聚氨酯(PU)和环氧树脂(EP)及云母填料合成了PU/EP二元IPN水声吸声材料,对该材料的动态模量和声速进行了测量,研究了EP含量和云母填料及含量对材料动态模量及声速的影响,并对材料的吸声性能进行了分析。结果表明,材料弹性模量越大,材料中声波传播速度就越大;随着填料含量的增加,声速的下降幅度增大。并用直观的物理量表征了抽象的声学量,为指导水声材料的设计提供了基础。     

Effect of processing conditions on physical properties of 3‐aminophenoxyphthalonitrile/epoxy laminates

To develop high performances of polymer composite laminates, differential scanning calorimetry and dynamic rheological analysis studies were conducted to show curing behaviors of 3‐aminophenoxyphthalonitrile/epoxy resin (3‐APN/EP) matrix and define cure parameters of manufacturing processes. Glass fiber reinforced 3‐APN/EP (GF/3‐APN/EP) composite laminates were successfully prepared through different processing conditions with three parameters such as pressures, temperatures, and time. Based on flexure tests, dynamic mechanical analysis, thermal gravimetric analysis, and scanning electron microscope, the complementary catalytic effect of the three processing parameters is investigated by studying mechanical behavior, thermomechanical behavior, thermal behavior, and fracture morphology of GF/3‐APN/EP laminates. The 50/50 GF/3‐APN/EP laminates showed a significant improvement in flexural strength, glass transition temperature (T_g), and thermal stability with favorable processing parameters. It was also found that the T_g and thermal stability were significantly improved by the postheated treatment method. The effect of manufacturing process provides a new and simple route for the polymer–matrix composites application, which indicates that the composites can be manufactured at low temperatures. But, they can be used in a high temperature environment. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 39746.