可采用热固性加工方式的CBT树脂

CBT树脂是由PBT（聚对苯二甲酸丁二醇酯）树脂解聚而成的，其性能与PBT相当。该树脂一方面具有液态热固型树脂的加工性，可以用更多的方式来成型，另一方面，它在聚合后又具有PBT树脂的可重复加工性，基于这种特点，CBT树脂的应用领域正在不断得勤拓展．其市场前景看好。[编者按]     

玻璃纤维夹砂树脂涵管

玻璃纤维夹砂树脂涵管，其管壁结构为交替的树脂玻纤布缠绕层和树脂夹砂层，涵管一端具有外锥段，该外锥段的表面具有密封圈嵌槽，涵管的另一端具有与所述外锥段相对。     

阻燃树脂的研制

研究用于木材和印刷线路板防火的阻燃树脂，用三溴苯酚改性醛酚树脂，三聚氰胺改性酚醛树脂及松香改性树脂，将三者按一定的比例混合形成具有良好物理性能的阻燃树脂，同时也讨论了树脂各组分之间比例及其对混合树脂性能的影响。     

RTM专用混合型树脂体系研究——反应特性与工艺特性研究

本文采用乙烯基酯树脂和环氧树脂体系共混改性的方法。研究和开发具有良好工艺性、耐热性和力学性能的低成本ＲＴＭ用树脂体系。研究表明，乙烯基酯树脂和环氧树脂体系具有良好的共混特性。ＤＳＣ及粘度分析研究表明，混合型树脂体系中的乙烯基酯组份分散了环氧树脂的反应放热，有效降低了７１１环氧树脂的反应速度和改善了树脂的工艺特性。使混合型树脂具有较好的ＲＴＭ工艺低粘度平台工艺性能。所研究的混合型树脂体系可用于ＲＴＭ     

用于热成型包装的耐热性更高的生物塑料

据“www．ptonline．com”报道，Cereplast公司开发了一种新的可热成型的树脂CP-TH-6000，这种树脂是聚乳酸基树脂，比其他生物塑料具有更高的耐热性，耐热温度达到68℃。这种树脂的开发结合了纳米技术和一种专利制造工艺，从而这种树脂具有比现在包装用的聚苯乙烯、聚乙烯、聚对苯二甲酸乙二醇酯更高的耐热性。     

共聚型聚氨乙烯掺混树脂合成

共聚型掺混树脂是在均聚型掺混树脂生产工艺基础上，以引入共聚单体的方式，进行共聚反应制得共聚掺混树脂。所制得的树脂除了保持均聚掺混树脂使用特性外，同时具有良好的塑化加工性能，从而改善制品机械物理性能。     

共聚型聚氯乙烯掺混树脂合成

共聚型掺混树脂是在均聚型掺混树脂生产工艺基础上，以引入共聚单体的方式，进行共聚反应制得共聚掺混树脂。所制得的树脂除了保持均聚掺混树脂使用特性外，同时具有良好的塑化加工性能，从而改善制品机械物理性能。     

新型低黏度苯并噁嗪树脂

介绍了1种新型低黏度苯并噁嗪树脂，用旋转黏度计研究了这种树脂的黏度，用DSC和凝胶化时间测试等研究了其固化反应行为，并对树脂浇注体和复合材料进行了力学性能测试。实验结果表明，这种树脂具有良好的工艺性能和较高的力学性能，可作为树脂传递模塑成型RTM的高性能复合材料基体树脂或高性能封装用树脂。     

低发烟阻燃树脂的性能研究

本文研究了填料对甲基丙烯酸树脂（ＮＳ）性能的影响，表明ＮＳ树脂具有较好的综合性能。填料的加入大大改善了ＮＳ树脂的发烟性。加填料的ＮＳ树脂制成的复合材料具有良好的力学性能和阻燃性能，且燃烧时无烟。     

特性乙烯基酯树脂的技术发展

就国内外乙烯基酯树脂的技术发展和趋势作一总结和概述，简述具有各种特殊理化性能的乙烯基酯树脂及其衍化品种，及其应用，概述具有乙烯基酯树脂和不饱和聚酯树脂综合性能的新产品乙烯基聚酯树脂的性能和应用。     

B.t.β-环糊精包合物的制备及其杀虫效果

制备出苏云金芽孢杆菌（B．t．）β-环糊精包合物,并对包合物进行了差热分析,证明B．t．原粉被β-环糊精包合。室内生物活性测定结果表明,当B．t．原粉与β-环糊精质量比为0．5：2时,包合物对棉铃虫2龄幼虫的杀虫活性最高,确定包合物中B．t．原粉与肛环糊精的最佳质量比为0．5：2。盆栽药效试验结果表明,当B．t．原粉制成环糊精包合物后,与B．t．原粉和B．t．制剂相比,对小菜蛾的防效明显提高。药剂处理后1、3、7d,B．t．环糊精包合物对小菜蛾的防效分别为41．67％、61．54％和60．00％,而B．t．原粉和制剂的防效分别为23．61％、38．46％、32．00％和31．94％、52．31％、46．00％。     

Refractory compounds of basic composition for the monolithin lining of steel-teeming ladles

Conclusions Questions of the method of production of basic ramming compounds at Panteleimonovka Refractory Plant and their use in the monolithic lining of the walls of 160-ton steel-teeming ladles of the No. 2 Converter Shop of Kirvoi Rog Steel Combine are considered.An analysis of the wear of the lining during service showed that it occurs as the result of spalling of the sintered zone and salamandering of the lining. The use of a movable thermally insulated lid made it possible to hold the temperature of the ladle lining within limits of 730–1120°C between heats and to obtain a basic rammed lining life of 21–39 heats as opposed to an average life for the shop of 14.8 heats.A reserve for increasing the ladle basic lining life is optimization of the thermal conditions of its service, including high-temperature heating of the lining before pouring of the metal, the use of thermally insulated lids with the minimum consumption of time for placing of them, an increase in the life of the well refractory to the life of the walls and bottom, and elimination of cooling of the lining between heats.A Discussion: Problems of the Production and Use of Refractories for the Lining of Steel-Teeming Ladles. [For the start of the discussion see No. 8 (1988) and for the continuation Nos. 9–12 (1988) and Nos. 1–3, 5, and 7 (1989).]Deceased.I. I. Glaka, N. F. Drobot, N. V. Kurmaz, B. P. Zinchenko, S. A. Poznyak, I. M. Ryaboshapkin, V. V. Slushko, A. A. Chulkov, Yu. Bormatov, S. I. Vanchyuk, V. I. Dobrovol'skii, B. G. Zhuravel', N. I. Kiyan, L. I. Nekrasov, N. M. Sokolov, P. V. Khomenko, G. A. Nikitenko, S. Dorgobuzov, P. I. Valiev, N. N. Gorbatko, V. I. Kovalenko, and M. I. Lyakhov of Krivoi Rog Steel participated in the preparation and tests of the basic monolithic linings.Translated from Ogneupory, No. 8, pp. 1–4, August, 1989.     

国外生物降解聚合物的种类及主要组分

据１９９６～１９９８年国外有关文献的汇集,由美,日,德等国主要研制,生产的生物降解聚合物种类为：１,单一型生物降解聚合物;（１）合成酯（酸）类;（２）淀粉基材料;（３）天然高分子材料;２、复合型生物降解聚合物;（１）不同种类的烃基互聚物;（２）烃酯（酸）／聚酯（３）脂肪族聚酯／芳香族聚酯共聚物;（３）淀粉基复合型,（５）光／生物降解聚合物;３、可生物降解水溶性聚合物。     

Book Reviews

Physico-Chemical Basis of Formation of Non-Woven Materials, V. 6. Tikhomirov, Legkaya lndustriya Publ. Moscow 1969. 328 pp. Rub. 2.29.

ADHESIVES FOR METALS. THEORY AND TECHNOLOGY, Nicholas J. DeLollis. Industrial Press Inc., New York 1970. 230 pp. $15.00.     

九种致癌染料剥色工艺的优化

针对纺织品上可能存在的九种致癌染料(C.I.酸性红26、C.I.分散橙11、C.I.分散黄3、C.I.分散蓝1、C.I.直接蓝6、C.I.直接黑38、C.I.直接红28、C.I.碱性红9、C.I.碱性紫14),本文研究并比较了不同剥色工艺对不同致癌染料剥色效果的影响.并提出选用加入尿素的甲醇作为剥色剂,使用超声功率为100W的超声波在70℃处理30分钟可以获得比较理想的剥色效果.     

The ruthenium(VIII)-catalysed oxidation of Illinois No. 6 bituminous coal: An application of g.c.-FT-i.r. spectroscopy for structural analysis

The oxidation of Illinois No. 6 coal proceeds readily with ruthenium(VIII) to provide a mixture of aliphatic and aromatic carboxylic acids. The acids were converted into their methyl esters for analysis by g.c.-m.s. and g.c.-FT-i.r. spectroscopy. Mono-, di-, tri- and tetracarboxylic acids are the principal products of the oxidation of this bituminous coal. The g.c.-FT-i.r. approach has enabled the detection of several different lactones that have not been observed previously. The results imply that cyclic ethers are present in low abundance in Illinois coals.     

Analysis of upgraded SRC-11 and H-coal liquid products

Upgraded coal-derived liquids obtained from catalytic hydroprocessing of SRC-11 and H-coal syncrudes have been studied by i.r., p.m.r., g.c.-m.s., and silica gel chromatography. With increase in residence time, nitrogen, oxygen and aromatics decrease, while naphthenes increase substantially. All the upgraded liquids show low viscosity at 298 K (1.3–1.4 mN s m^?2), even though saturate and aromatic fractions varied with processing severity. In the aromatic-1 fraction, 1 -ring aromatics increase, and 3-ring aromatics decrease, with increase in severity of hydroprocessing. G.c.-m.s. analyses indicate a marked qualitative similarity for saturate and aromatic fractions irrespective of syncrude source. Only the heavier end of the aromatic-1 fraction is noticeably different. Tentative identifications based on m.s. and g.c. retention times are made for most of the significant components. 600 M Hz p.m.r. spectra of the upgraded SRC-11 and H-coal liquids appear identical, but the n.m.r. difference technique revealed slight differences between the two liquids in concentrations of certain species.     

Characterization of coals and coal oxidation by magic-angle 13C n.m.r. spectroscopy

Magic-angle ¹³C n.m.r. spectra have been obtained for a series of vitrinite concentrates. Proper modification of the cross-polarization pulse sequence allows separation of protonated and nonprotonated carbon resonances. This technique is used to determine the relative fraction of nonprotonated aromatic carbons for each of the vitrinites, a parameter observed to decrease with increasing rank. Another parameter, related to the aromatic hydrogen content, is also calculated from these data and the results correlate with those from Fourier transform i.r. spectroscopy. The methods used for analysis of the vitrinite concentrates were then applied to the low-temperature oxidation of coal. The fractional aromaticity as determined by n.m.r. increases with longer oxidation times, indicating preferential attack on aliphatic structures. Here the FT-i.r. results are in quantitative agreement with those from n.m.r. Finally, the advantages of using various pulse sequences to extend the range of magic-angle n.m.r. and of combining FT-i.r. and n.m.r. results are discussed in the context of their potential for coal science.     

Mechanical properties of zirconium dioxide single crystals intended for structural applications

Conclusions New structural materials (single crystals obtained from partially stabilized zirconium dioxide) were studied. It was established that their physical and mechanical properties are certainly comparable to those of the other structural materials. We obtained new information regarding the mechanical behavior of the single crystals of zirconium dioxide that would facilitate further development of the technology of these materials and guide the studies on the mechanisms of their resistance to mechanical forces under different loading conditions.Translated from Ogneupory, No. 8, pp. 14–17, 1991.The authors wish to thank V. I. Aleksandrov, M. A. Vishnyakov, Yu. K. Voron'ko, and V. F. Kalabukhov for participating in the research work concerning crystal growth and V. I. Galenko, A. V. Drozdov, A. V. Cheboryukov, and A. I. Fesenko for carrying out mechanical testing.     

NMR- und UV-VIS-Spektroskopische Untersuchungen an Push-pull-Butadienen

N.M.R. and U.V.-VIS Spectroscopic Investigations on Push-pull Butadienes ¹³C-n.m.r., d-n.m.r. and u.v.-vis spectroscopical data show that the push-pull character of the investigated butadienes is lowered by substitution at the carbon atom in 3-position of the butadiene chain.