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世界橡胶工业 1983年第1期 7-14页

作者： Barry Williams 张心胜

前言自从约十五年以前三元乙丙胶投入使用以来,配方人员直在致力于解决包括制定满意韵三元乙丙胶配方在内的许多问题。主要任务之一是,改善这种聚合物的硫化特性,并在早期粗略地预测使用现有的促进剂系统时的硫化途径。在此项工作中配... 详细信息

前言自从约十五年以前三元乙丙胶投入使用以来,配方人员直在致力于解决包括制定满意韵三元乙丙胶配方在内的许多问题。主要任务之一是,改善这种聚合物的硫化特性,并在早期粗略地预测使用现有的促进剂系统时的硫化途径。在此项工作中配方人员虽可求助于聚

关键词：三元乙丙胶促进剂快速硫化硫化(橡胶)

STUDIES ON REGULARITY OF POLY PHENYLSILSESQUIOXANE CHAINS

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Chinese Journal of Polymer Science 1987年第2期5卷 162-168页

作者：张心胜陈素明施良和 Institute of Chemistry Academia Sinica Beijing Institute of Chemistry Academia Sinica Beijing

IR and;Si NMR were used to determine the structures of ladderlike polymer polyphenylsilsesquioxanes （PPS）. It was found that PPS with lots of defects had a wide and strong absorption band in 1000—1400 cm;with only one sharp peak at 1137 cm;while two peaks (1130 and 1045 cm;were observed for PPS with perfect ladderlike structure. Branching and crosslinking of PPS lead to the reduction of 1045 cm;peak.;Si NMR spectra, however, showed two peaks (δ=-78 ppm and -87 ppm when δ;=0 ppm) for defective or branched PPS. The -87 ppm peak is related to the ladderlikely constructed Si atoms and -78 ppm corresponds to defective Si atoms. PPS with defects less than 0.1% chain units was obtained by azeotropic polycondensations.

关键词： Ladderlike polymer Regularity Characterization

SYNTHESES AND STRUCTURES OF POLYPHENYLSILSESQUIOXANES

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Chinese Journal of Polymer Science 1987年第3期5卷 197-204页

作者：张心胜施良和 Institute of Chemistry Academia Sinica Beijing

Phenyltrichlorosilane was hydrolyzed both ifi. toluene and in ether from which two kinds of prepolymers were obtained with different structures, molecular weights, and molecular weight distributions. Polymers were prepared from the prepolymers in various polymerization conditions. The ladderlike, branched, and crosslinked structures formed under different polymerization conditions were characterized by means of FTIR, 1H and 29Si-NMR, and elemental analysis. Azeotropic distillation of solvents and H2O formed during polymerization was found useful in removing H2O from the system and high molecular weight products with perfect ladderlike structure were obtained.

关键词： Polyphenylsilsesquioxanes Prepolymers Synthesis Characterization

STUDIES ON THE EXCIMER FLUORESCENCE AND THE STERIC TACTICITY OF POLYPHENYLSILSESQUIOXANES

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Chinese Journal of Polymer Science 1987年第4期5卷 347-352页

作者：黄超然徐广智张心胜施良和 Academia Sinica Beijing Institute of Chemistry

The steric tacticity of polyphenylsilsesquioxanes (PPS) was studied by exeimer fluorescence spectroscopy. It was found that the fluorescence of PPS come mainly from its intramolecular excimers, The experimental results indicated that the steric-structure of PPS is most probably cisisotactic rather than the cis-syndiotactic as suggested in the literature. With the increase in defect content monomer fluorescence intensity increases because of the enhanced mobility of phenyl groups. Molecular weights and molecular weight distributions do not affect the fluorescence spectra of PPS.

关键词： Polyphenylsilsesquioxanes Fluorescence Excimer Steric tacticity.

MORE ON THE STRUCTURES OF POLYPHENYLSILSESQUIOXANES

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Chinese Journal of Polymer Science 1987年第4期5卷 353-358页

作者：张心胜施良和黄超然 Institute of Chemistry Academia Sinica Beijing Beijing To whom correspondence should be addressed

The steric tacticity of polyphenylsilsesquioxanes is discussed based on both structure transformation consideration and the results of calculations, X-ray diffraction patterns, fluorescence emission spectroscopy, and scanning electron microscopy. All of the results show that cis-isotactic conformation is the most probable one for ladderlike polymer polyphenylsilsesquioxane though other conformations such as cissyndiotactic may also be present in the macromolecules depending upon the preparation conditions.

关键词： Polyphenylsilsesquioxanes X-ray diffraction patterns Fluorescence emission spectroscopy Scanning electron microscopy

BR/CIIR共混体系的相容性及其界面的相互作用

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合成橡胶工业 1985年第4期11卷 270-273页

作者：张心胜许春华林裔珍谢其昌周国楹吴祥龙北京橡胶工业研究设计院

本工作用混炼胶转矩、热分析、动态力学和显微镜等方法研究了 BR/CIIR共混体系的相容性和共混组分在相界面上的相互作用。结果表明,BR/CIIR共混体系是不相容的,组分间在界面上的扩散作用和粘接力很低,界面的存在将导致共混体系某些物理... 详细信息

本工作用混炼胶转矩、热分析、动态力学和显微镜等方法研究了 BR/CIIR共混体系的相容性和共混组分在相界面上的相互作用。结果表明,BR/CIIR共混体系是不相容的,组分间在界面上的扩散作用和粘接力很低,界面的存在将导致共混体系某些物理机械性能的下降。通过采用合适的硫化体系可以强化界面上的相互作用或减小界面,并提高共混体系的物理机械性能。

关键词：共混体系不相容 BR/CIIR 相容性物理机械性能

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SOLUTION PROPERTIES OF LADDER-LIKE POLYMER POLYPHENYLSILSESQUIOXANES

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Chinese Journal of Polymer Science 1987年第4期5卷 359-365页

作者：施良和张心胜史沅东叶美玲李定才 Institute of Chemistry Academia Sinica Beijing

Solution properties of ladder-like polymer polyphenylsilsesquioxane （PPS） were studied by measurement of intrinsic viscosity, small angle laser light scattering and gel permeation chromatography. It was found that PPS can be modeled with a wormlike continuous cylinder rather than a wormlike coil. A plot of （M2/[η]）1/3 vs. M1/2 was employed in obtaining the persistence length （2λ）-1 and effective hydrodynamic diameter. When MW≤5×105, Mark-Houwink equation is adequate in describing the relationship between MW and [η] with αabout unity. This implies that PPS chain is semi-stiff. For GPC experiments, it was shown that universal calibration can be applied in PPS. When molecular weights of PPS are sufficiently high, their molecular weight distributions are often very broad.

关键词： polymer solution ladder polymer wormlike cylinder polyphenylsilsesquioxane

炭黑在BR/CIIR共混体系中的分配和转移行为及其对共混体系性能的影响

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合成橡胶工业 1984年第6期 448-452页

作者：吴祥龙周国楹许春华林裔珍谢其昌张心胜北京橡胶工业研究设计院

用电镜形态学观察,研究了ISAF在BR/CIIR共混胶料中的分配和转移行为及其对共混胶料性能的影响。加入到BR/CIIR(50/50)共混胶料中的炭黑,主要聚集在BR相中;加入到CIIR相中的炭黑,在足够的剪切作用下,大部分将转移到BR相中或BR与CIIR的两... 详细信息

用电镜形态学观察,研究了ISAF在BR/CIIR共混胶料中的分配和转移行为及其对共混胶料性能的影响。加入到BR/CIIR(50/50)共混胶料中的炭黑,主要聚集在BR相中;加入到CIIR相中的炭黑,在足够的剪切作用下,大部分将转移到BR相中或BR与CIIR的两相界面上;但加入到BR相中的炭黑,很少转移到CIIR相中。这说明BR对炭黑具有较强的亲和力。采用不同的工艺方法,可改变炭黑在共混胶料中的分配状况。先将全部炭黑加入CIIR中,再与BR共混,可使共混胶料具有较好的性能。

关键词：胶料性能 BR/CIIR CHR 共混胶炭黑补强剂共混体系转移行为