PVC高分子合金在电缆桥架中的应用研究

报道了轻量化高分子合金电缆桥架产品的研制。首先通过PVC与尼龙共混改性,开发了一种PVC高分子合金。研究结果表明,PVC高分子合金具有良好的力学性能,优异的防腐蚀性能和阻燃性能。其次,研制了PVC合金高分子材料电缆架桥产品,测试和评估了高分子合金电缆架桥;其技术指标明显优于JB/T12147—2015 《塑料电缆桥架》标准,达到国内先进水平。     

张家港开工高性能尼龙合金项目

近日．飞翔公司苏州翰普高分子材料有限公司5000吨高性能尼龙合金项目在张家港开工。 苏州翰普高分子材料有限公司投资1．5亿元建设的高性能尼龙合金项目，预计产值4亿元，可以创造1．5亿元利税。     

改性工程塑料的发展趋势

随着国内汽车、电气电子、通讯、机械工业的蓬勃发展，改性工程塑料的需求将大幅上升，各种高强度耐热型工程塑料将得到广泛应用。高分子合金，特别是尼龙合金、PC合金将受到市场青睐。     

抗冲击高分子合金

主要介绍了由PK(聚酮)和PA(尼龙-6)组成的高分子合金的结构以及它的耐冲击特性.用拉曼光谱分析了PK与PA的相互作用,分析了PK和PA分子链的运动性.     

PES-C/PA6共混材料的性能研究

尼龙6是机械性能优异的热塑性结晶工程塑料,具有很好的强度、耐磨性能优异,成型性好,因而广泛用于高分子合金的制造。本文研究刚性链聚合物—酞侧基聚醚砜(PES-C)增强尼龙6,采用熔融共混的方法获得一系列PES-C/PA6共混物,使用DSC、TG、SEM等方法对其结构与性能进行表征,结果表明:PES-C的加入对尼龙的结晶产生异相成核的作用,使结晶温度升高,同时也小幅度提高了PA6的玻璃化转变温度。     

尼龙-6合金及应用

综述了国外目前已商品化尼龙 6合金的特性及应用,对各种尼龙 6合金的相容剂及正在研究开发的尼龙 6合金作了介绍,简述了国内尼龙 6合金的现状,展望了尼龙 6合金的发展前景     

尼龙6／马来酸酐接枝聚丙烯合金力学性能和流变行为的研究

本研究利用单螺杆挤出机通过熔融共混制备了尼龙6/接枝聚丙烯塑料合金,并测定了其吸水性、力学性能和流变行为。结果表明:接枝聚丙烯可以改善尼龙6与聚丙烯之间的相容性,合金的吸水率明显降低,在保持较高刚性的同时冲击性能优于尼龙6。流变测定表明:尼龙6/接枝聚丙烯合金的假塑性增加、熔体粘度上升、成型加工性较尼龙6有所改善。     

MC尼龙改性研究进展

简介了MC尼龙的性能、应用、制备工艺以及无机改性MC尼龙的方法,重点叙述了有机小分子改性MC尼龙、直接添加聚合物改性MC尼龙、将柔性高分子链引入MC尼龙大分子链中或分子链末端形成嵌段共聚物等有机改性MC尼龙的方法与效果。     

专利

一种聚苯硫醚/尼龙合金材料及其制备方法公开号:CN104072991A公开日:2014-10-01申请人:上海杰事杰新材料(集团)股份有限公司摘要本发明属于高分子材料技术领域,涉及一种聚苯硫醚/尼龙合金材料及其制备方法。该合金材料由包含以下质量份的组分制成:50~90份聚苯硫醚、10~50份尼龙、2~10份增容剂、0.1~0.5份抗氧剂和0.2~1.0份润滑剂。本发明选择具有高强度、较高韧性的尼龙对聚苯硫醚合金化增韧,加入一定量的增容剂,改善聚苯硫醚与尼龙间的相容性,并使用异氰酸酯作为化学处理剂,连接聚苯硫醚、尼龙的大分子链段,使合金组分间形成良好的界面相容性,从而有效地     

聚烯烃/尼龙合金材料的性能

为了改善尼龙6的综合性能,采用聚烯烃与其复合,制得高分子合金材料,对复合材料的结构和性能进行分析.结果表明:聚烯烃和尼龙6在相容剂的作用下可以较好地复合,并有效地降低了PA6的吸湿性,提高制品的尺寸稳定性;随着相容剂用量的增加,合金体系的拉伸强度、断裂伸长率都有所提高;PA6的低抗冲击性、低温韧性也得到有效的改善.     

Photodecomposition of Aminoanthraquinone Disperse Dyes on Poly(ethylene terephthalate)

The rapid fading on polyester fibres of certain blue anthraquinone disperse dyes under normal conditions of exposure is due to the ease of photochemical de-alkylation of their substituted-amino groups. The products of the photoelimination reaction for a series of dyes have been identified, and a mechanism for the reaction is proposed. The higher photochemical stability of these dyes on cellulose acetate and nylon is perhaps due to hydrogen bonding of the alkylamino groups to the polymer. The influence of wavelength of irradiation, oxygen, moisture and the physical structure of the polymer is discussed.     

聚酰胺工程塑料的发展

介绍国内外聚酰胺工程塑料的发展历史和现状,各种聚酰胺新品种和新成型工艺技术的研究与开发动向,并对我国发展聚酰胺工程塑料提出了建议。     

Multilayered confinement of iPP/TPOSS and nylon 6/APOSS blends

A series of isotactic polypropylene and nylon 6 blends with silsesquioxane (POSS) additives were produced, then layered to nanometer thicknesses to test the effects of confinement upon polymer property modification. POSS is shown to be a poor filler, lacking solubility and favorable interaction with the polymer matrices. It was initially hypothesized that under extreme confinement and orientation, such as in melt-spun fibers, or confined within 2D nanoscale layers, that POSS would undergo forced-assembly into elongated, rebar-like reinforcement structures, or even act as crosslinking molecules for the polymer chains. The current results, however, show POSS existing as large, phase separated aggregates, in order to minimize interactions with the polymer matrix; the aggregates behave as debonded hard particles upon tensile deformation. POSS has been previously shown to enhance the properties of polymer matrices in which the POSS molecules have been grafted to, or copolymerized within the chain, but this is not the case for these POSS blends. In comparison to results from the iPP/DBS/TPOSS system, in which POSS is unable to directly interact with the polymer matrix, and the nylon 6/APOSS system, in which POSS can potentially form hydrogen bonds with the polymer matrix, the results are similar and reveal that POSS blends are largely incompatible with the polymer matrix. Small improvements in blend properties can be made via functionalization of the POSS cage, in order to enhance interactions, but these improvements are quite limited.     

高聚物共混纤维

共混技术是改善合成纤维性能的有效方法。介绍了共混纤维的分类和制造方法，讨论了高聚物的相容性及其对共混纤维的相态结构的影响，对影响基体－微纤型共混纤维的结构和性能的因素作了探讨，并给出了几个有代表性的共混纤维的实例。     

Studies on 3D Printability of Novel Impact Modified Nylon 6: Experimental Investigations and Performance Evaluation

The development of functional polymer parts with complex geometrical shape has been possible through additive manufacturing. In this research work, the issues such as warping, filament clogging, and layer delamination related to fused deposition modeling-based 3D printing of nylon 6 are focused and its poor printability is improved. Nylon 6 is toughened by blending with an impact modifier, ethylene terpolymer. Complex viscosity, storage, and loss moduli of modified nylon increase significantly, which help to improve 3D printability of nylon 6. 3D printing of modified nylon is performed at optimized conditions, such as printing temperature, print speed, bed temperature, and cooling speed. Izod impact strength of 3D printed nylon 6-based blend is observed ≈543 J m⁻¹, which is significantly higher than the value (48 J m⁻¹) available in literature for injection molded pristine nylon 6. Thermomechanical analysis of modified nylon shows higher coefficient of linear thermal expansion in normal direction as compared to that in flow direction, which is due to the orientation of polymer crystals during processing. The voids are observed on the cross-sectional surface of impact fractured sample, which are responsible to produce light-weight 3D printed specimens.     

Tracer Diffusion of Chloride Ions in Nylon 6 Film

Tracer diffusion coefficients of chloride ions in nylon 6 film have been determined by standard techniques combined with liquid scintillation counting. The tracer diffusion coefficients depend markedly on the amount of chloride ion sorbed by the nylon. The observed diffusional flux is a function of two diffusional interaction coefficients relating to the interaction of the diffusing ion with ‘unoccupied’ charge centres in the polymer and with the absorbed water. The interplay of these two interactions may be important in connection with the problem of dyeing barré nylon.     

聚硅酸铝盐絮凝剂的应用及研究进展

无机高分子复合絮凝剂与普通的无机高分子絮凝剂相比有很多优点,近年来受到国内外学者的广泛重视并得到开发应用,聚硅酸铝盐絮凝剂的开发成了研究热点。通过对几种高分子聚硅酸铝盐絮凝剂的介绍,分析了它们的特点、发展现状及应用,指出今后将有广阔的发展前景。     

Amplification effect of platelet type nanoparticles on the orientation behavior of injection molded nylon 6 composites

The effect of platelet type nanoparticles and processing conditions; mold temperature and injection speed, on the development of local microstructure in injection molded nylon 6 parts was investigated. The molded parts exhibit two crystal forms (α and γ) of nylon 6 in varying proportions from skin to core. The γ crystals preferentially grow near the surface regions and α crystal fraction increases with distance from the surface in all molded parts. However, the spatial variation of crystal phases across the thickness in nanocomposites differs from that of unfilled nylon 6. Nanoplatelets induce high levels of orientation of the polymer matrix throughout the thickness of the molded part even at high mold temperatures where nonisothermal effects are highly suppressed and confined to very close proximity of surfaces. These high chain orientation levels observed in nanoparticle filled systems is a result of the shear amplification effect that occurs in small spaces between adjacent nanoparticles of differing velocity. The local preferential crystalline orientation of nylon 6 resin and nanoparticles across the thickness of the molded parts are investigated using a series of structure characterization techniques including microbeam wide angle X-ray, SAXS and TEM.     

Azide Reactive Dyes Part II - Transfer-printing Properties of Sulphonyl- and Aryl-azide Dyes on Nylon 6.6

The transfer-printing properties of dyes containing the sulphonylazide (-SO₂N₃) and arylazide (ArN₃) groups have been examined for nylon 6.6 substrates. After sublimation at 200°C the azide group decomposes rapidly to a nitrene species which reacts with the polymer. Dye fixation occurs by insertion of the nitrene into the carbon-hydrogen bonds of the polymer, thus forming a nitrogen bridge. A competing reaction involves hydrogen abstraction from the substrate to give an amino derivative of the dye which is not covalently bound to the polymer. Fibre-grafting occurs to the extent of about 60–75% for both series of dyes. Unlike the sulphonylazides, the arylazide dyes show a pronounced colour change after transfer, as the thermally-generated amino group is directly conjugated with the dye chromogen.     

聚合物在离子选择电极上的应用

本文概述了聚合物膜离子选择电极的发展,制备、应用等方面的研究情况;将聚合物膜离子选择电极分为固态膜类和液态膜类,分别对其优缺点和发展前景加以分析;并讨论了聚合物在敏感膜中的作用,以及聚合物结构对敏感膜性能的可能影响。