阻燃聚酯的现状与展望

阻燃聚酯是一种新型功能化聚酯,具有优良的阻燃性能,在内饰材料、服装纺织、工业布等诸多领域都有广泛应用.分析总结了阻燃聚酯的各种工艺方法、多种系列的阻燃剂、阻燃聚酯的新技术和阻燃聚酯的应用展望,并提出了阻燃聚酯的发展趋势和方向.     

国内外非纤用聚酯现状及发展研讨

为促进我国非纤用聚酯及其制品的发展,在介绍国内聚酯生产能力,近些年产量及世界各种用途聚酯历年产量、各自所占比例的基础上,论述了我国聚酯瓶和聚酯膜的制造和需求情况,并对我国聚酯工业及非纤用聚酯制品的发展提出建议。     

PET/PEG共聚反应的动力学研究

在试管合成装置上,以酯化率93%的BHET和分子质量不同的各种PEG为原料,合成了一系列PET均聚酯和PET/PEG共聚酯,研究了共聚酯与均聚酯的反应动力学差异。研究发现,反应温度、时间等工艺条件对(共)聚酯的缩聚反应速度有很大的影响,在相同的工艺条件下,(共)聚酯的反应速度快于PET。     

水性饱和聚酯的制备与性能研究

本文针对水性聚酯树脂的特点,对水性聚酯合成原料选择及各原料对聚酯树脂性能的影响进行了分析,确定了作为涂料成膜材料水性聚酯原料——多元酸和多元醇选择与配伍的基本依据和原则,论述了羧基型水性聚酯、磺酸盐型水性聚酯的合成方法及聚酯树脂水性化各种方法的特点,对水性聚酯的开发与应用前景作了展望。     

不同组份的复合混纤聚酯长丝开发与研究

复合混纤聚酯长丝是采用两种或两种以上不同组份的聚酯,利用它们之间的不同的收缩率差,上染性差异,开发生产异收缩和异色聚酯长丝.本文对异收缩聚酯和异色聚酯的原料选择、制取和复合混纤工艺等进行了研究,认为可以在DTY机上开发各种不同组份的混纤聚酯长丝.     

我国聚酯涤纶生产面临的形势分析

阐述了国际国内各种影响聚酯涤纶供求的因素 ;预测了 2 0 0 0年的价格走势和盈利情况 ;分析了我国聚酯投资现状 ;指出 2 0 0 2年后将再次出现全球聚酯投资热。     

PEN聚酯工艺的研究进展

介绍了聚萘二甲酸乙二醇酯(PEN)聚酯的性能和用途，详细概括了合成PEN聚酯的各种工艺路线研究进展情况。     

国外有关塑料助剂研究的期刊文摘

正二磷基聚酯聚氨酯的合成及其在阻燃纳米涂料中的应用[Polymer Bulletin (Heidelberg, Germany),2018, Ahead of Print]该工作描述了基于二磷的聚酯聚氨酯的合成及其各种方法的表征结果,聚氨酯由聚酯多元醇合成。其中聚酯多元醇经由含有二磷结构的二醇、马来酸酐和邻苯二甲酸酐的反应合成,然后与各种二醇如乙二醇,二甘醇和丙二醇反应     

液体过氧化环已酮在不饱和聚酯中的应用

在体过氧化环已酮广泛应用于各种聚酯玻璃制品和各种聚酯浇铸体、表面涂层等，其质量稳定，性能优异。     

废聚酯再资源化新进展

废聚酯种类不同，再资源化方法及所得产物各不相同，常见的废聚酯处理方法包括机械处理，化学改进，化学降解等，本文概述了废聚酯再资源化各种方法的最新进展情况。     

日化香精在染发产品中的应用

根据染发类产品的特性,分析染发类用香精和其它香精的区别,调配适合用于染发类产品的日化香精,研究不同香型香精在染发产品中的应用。     

超薄高强屏幕保护玻璃发展综述

超薄高强屏幕保护玻璃是触控显示产品的重要保护材料,也是当前较为热门的玻璃品种。超薄屏幕保护玻璃经过多年技术开发和产品迭代更新,已经发展成具有不同组分特点的碱铝硅酸盐系列产品。本文梳理了国内外屏幕保护玻璃产品发展及其迭代历程,总结了不同类型的碱铝硅玻璃产品化学组成特点,分析了不同产品对应的化学强化工艺技术,重点论述了国内外屏幕保护材料用高强透明微晶玻璃的研究现状,同时展望了微晶玻璃未来发展方向,为今后屏幕保护玻璃研发提供借鉴与参考。     

木质生物质的液化及其产物的高效利用研究进展

对国内外木质生物质原料的液化及液化产物的高效利用研究的现状及进展进行了概述,讨论了木质生物质原料液化及其产物的应用前景,重点讨论了不同木质生物质原料液化过程中的主要影响因素,并分析了具有代表性的液化物结构特点,具体介绍了一些液化产物实际应用特别是在胶黏剂制备方面应用的典型实例。对我国该领域研究存在的问题、产业化发展提出了一些看法。     

Sorption of petroleum products by carbon sorbents

A comparative study of the adsorption of petroleum products by micro- and macroporous carbon sorbents was performed. For this purpose, four carbon sorbent samples prepared from various raw materials by various processing techniques were used. The pore structures and adsorption capacities of these sorbents for petroleum products were studied. It was found that the adsorption of petroleum products on porous and nonporous carbon sorbents occurred in different manners. In this case, macroporous sorbents with a weakly developed structure of sorbing micro- and mesopores exhibited a maximum capacity for petroleum products.     

防晒化妆品功效性评价与发展趋势

综述了防晒化妆品的功效性评价方法及发展趋势。主要介绍了紫外线的危害及防晒剂的种类和作用机理,重点介绍了防晒化妆品的各种评价方法,主要包括SPF的人体测试法、仪器测试法、抗水性测试法以及UVA防护的人体测试法及体外测试法等,最后指出防晒剂及防晒化妆品的未来发展趋势。     

Direct Proof of Volatile and Adsorbed Hydrocarbons on Solid Catalysts by Complementary NMR Methods

In this paper, both volatile and strongly adsorbed products of heavy hydrocarbon conversion on a zeolite were investigated by gas-phase and solid-state NMR. For this purpose, the reactions were carried out in sealed glass tubes under vacuum to collect the volatile reaction products. This procedure is demonstrated for pure 2-ethylphenol conversion on ultra-stabilized zeolite Y leading to both the formation of light alkanes and deoxygenation products. The above-mentioned method is useful to improve the understanding of heavy hydrocarbon conversion under batch conditions.     

Thermal oxidation of poly(1-pentene): 1. Indentification of products and mechanisms

Isotactic poly(1-pentene) was degraded in the presence of pure oxygen at 115°C. The functional groups present in the non-volatile products were identified using infra-red spectroscopy. The volatile products formed were identified by means of a relatively new technique which combines thermal and mass chromatography. In this study, fourteen volatile products were detected and identified and their relative abundance estimated. The results obtained could readily be reproduced. Various oxidation mechanisms for these products are postulated.     

Facile and Efficient One-Pot Synthesis of Anthraquinones from Benzene Derivatives Catalyzed by Silica Sulfuric Acid

In connection with our research program directed toward the synthesis of anthraquinones by new catalyst, we achieved a new method for preparation of some anthraquinone derivatives from the reaction of aromatic compounds with phthalic anhydride in the presence of silica sulfuric acid (SSA). The advantages of this method are availability of starting materials, simplicity of the reaction, reusability of catalyst and purity of products. In this reaction, the products were obtained via easy work-up in high yields and short reaction times. The structures of products were assigned by physical data and spectroscopic methods.     

Thermal oxidative degradation of poly(4-methyl-1-pentene). I. Identification of products and mechanisms

Isotactic and atactic poly(4-methyl-1-pentene) powders were degraded in the presence of pure oxygen at temperatures of 145° and 175°C. The functional groups present in the nonvolatile products were identified using infrared spectroscopy. The volatile products that formed were identified by means of a relativly new technique which combines gas chromatography and mass spectroscopy. In this study, seventeen volatile products were detected and identified and their relative abundance estimated. The results obtained could readily be reproduced. Various oxidation mechanisms for these products are postulated.     

新型4-羟基香豆素衍生物的合成与表征

香豆素是自然界天然产物中一类十分重要的有机化合物。以4-羟基香豆素为原料,采用微波合成法"一锅煮"法,合成了系列新型香豆素衍生物,所有产物进行了IR、MS、1HNMR结构表征,其中部分产物为首次合成。为此类抗凝血药物的研究提供了理论技术支持。