黑推光漆形成机理初探

通过漆酚与铁盐的反应,探讨黑推光漆的形成及其致黑机理,认为传统黑推光漆之所以具有乌黑光亮和超耐久等独特性能是由于生漆中漆酚与铁盐形成了漆酚醌钦(Ⅱ)螯合物。     

黑磷负载漆酚钆核磁造影剂的制备与研究

钆离子核磁共振造影剂在医疗成像领域得到广泛应用，降低其毒副作用一直是学界的热点。漆酚是一种药用天然分子，本研究利用漆酚与钆离子螯合反应，将钆离子螯合后并通过界面反应负载于生物相容性优异的黑磷纳米片上，制备了一种新型核磁造影剂(BP/UR-Gd³⁺)。研究中，通过FT-IR、SEM等测试手段表征了纳米负载漆酚钆螯合物的成功制备，并通过测试造影剂样品的弛豫时间、弛豫速率的分析，得出BP/UR-Gd³⁺具有高边面积比，因此有更多的钆螯合物的活性反应位点，有助于R₁弛豫性的增加，使得BP/UR-Gd³⁺有望成为新型T₁型造影剂。     

漆酚钼高聚物的研究：Ⅱ.漆酚钼螯合物分子中Mo的作用

本文在漆酚钼螯合物高聚物合成、表征的基础上,着重探讨了漆酚钼螯合物分子中Ｍｏ的作用。结果表明,漆酚钼螯合物分子中的Ｍｏ具有使漆酚溶液变黑的作用,在一定的范围内,溶液的吸光度随着四氯氧化钼用量的增加和加热时间的增加而增大,同一溶液的吸光度随着放置时间的延长而增大;漆酚钼螯合物分子中的Ｍｏ还具有催化漆酚使其固化成膜的作用,干燥时间随着四氯氧化钼用量的增加与加热反应时间的增加而缩短。最具特色的是漆酚钼螯     

热固化法制备癸二胺/漆酚膜及其性能研究

利用癸二胺(DMDA)与漆酚混合反应,在120℃高温条件下固化,得到癸二胺/漆酚热固化膜,探究不同比例的癸二胺对漆膜性能的影响。通过傅里叶变换红外光谱(FT-IR)、扫描电子显微镜(SEM)、热重分析(TG)等方法对漆膜进行表征,结果表明：热固化条件下,癸二胺与漆酚发生交联反应,使漆膜表面平整致密,热稳定性和耐碱性得到提升。同时物理机械性能也得到改善,当癸二胺添加量为10%时,铅笔硬度、耐冲击性分别为6H、65cm。     

漆酚钴螯合聚合物的合成

本文研究将漆酚与氢氧化钠反应生成漆酚钠后，再与硝酸钴反应合成漆酚钴螯合聚合物的方法和工艺条件，并采用元素分析、红外光谱、质谱、热谱等测试产物的结构特征及其性能。     

含钆漆酚基聚合物的合成及表征

由漆酚和漆酚苯胺醛缩聚物分别与三氯化钆反应合成含钆漆酚基聚合物〔漆酚钆聚合物 (PUG)和漆酚苯胺钆聚合物 (PUAG)〕。用IR、XPS、DMTA和DSC -TG对产物进行表征。结果表明 ,与Gd(Ⅲ )发生配位反应的是漆酚基聚合物中酚羟基氧原子 ;漆酚基聚合物与Gd(Ⅲ )反应后 ,其侧链进一步交联聚合形成具有较高模量和良好热稳定性的含钆漆酚基聚合物 ,PUAG的耐热性比PUG的好。     

紫外光固化漆酚镧聚合物(PULa)的性能与表征

由漆酚和氯化镧的酒精溶液,采用紫外光固化制备漆酚镧聚合物(PULa),用紫外可见光谱,红外光谱,热重分析等手段进行结构表征和性能测试。结果表明:紫外光固化得到的漆酚镧聚合物(PULa)膜具有良好的柔韧性能、抗冲击性、热稳定性能和抗溶剂性能。     

甲基丙烯酰氧基丙基三甲氧基硅烷/漆酚光固化膜的性能研究

在紫外光辐照下,以甲基丙烯酰氧基丙基三甲氧基硅烷(methacryloxy propyl trimethoxyl silane,简写MPS)和漆酚(简写U)为原料制备甲基丙烯酰氧基丙基三甲氧基硅烷/漆酚光固化膜,并考察了不同原料配比的光固化膜性能。通过红外光谱(FT-IR)、热重分析(TGA)等手段对固化膜进行结构表征和性能测试。结果表明,红外光谱显示甲基丙烯酰氧基丙基三甲氧基硅烷与漆酚发生了聚合反应,且甲基丙烯酰氧基丙基三甲氧基硅烷/漆酚光固化膜具备优良的常规物理机械性能(硬度、附着力、冲击性和柔韧性)、抗溶剂性能、耐化学介质性能及热稳定性能。     

芳香酯基液晶环氧树脂的合成

以对羟基苯甲酸和对苯二酚为原料,用对甲苯磺酸共沸催化法合成对羟基苯甲酸对苯二酚酯;再由对羟基苯甲酸对苯二酚酯与4-溴环氧丁烷进行反应合成酚酯型液晶环氧物质4-(2-(环氧乙烷基)乙氧基)苯甲酸-4-(2-(环氧乙烷基)乙氧基)苯酚酯。研究该化合物与4,4’-二氨基二苯甲烷(DDM)固化反应的固化特性及固化物的力学性能,并对其结构以及固化行为和固化物的形态进行了表征。结果表明该液晶环氧树脂与DDM交联聚合的网络保持了较好的液晶织态,聚合物具有较好的综合性能。     

聚漆酚/无机物杂化材料的研究 I.聚漆酚-SnO_2杂化材料的合成与特性

先由漆酚和四氯化锡合成非螯合型漆酚锡聚合物 ,然后采用水解法由该聚合物与NaOH水溶液制得聚合漆酚 -SnO2 杂化材料。SEM显示SnO2 以针状晶体分散在聚合漆酚基体中 ,杂化膜具有半导性和优良的热稳定性     

紫外光固化法制备漆酚铁聚合物涂料的研究

通过紫外光固化法快速便捷地由漆酚和三氯化铁制备了色泽乌黑、表面平整光亮的漆酚铁聚合物。当漆酚和氯化铁的物质的量比为3∶1,紫外光辐照20s时,漆膜具有优良的常规物理机械性能:光泽度132%,硬度6H,冲击强度50kg.cm,柔韧性0.5mm,附着力1级;良好的抗紫外线性能:紫外光辐照1200h以后,其失光率仅为4.85%;良好的耐热性能:受热320℃时失重5%;优异的抗化学介质性能。     

耐高温漆酚有机硼树脂的合成与结构表征

本文以漆酚与甲醛的缩合反应,产物漆酚缩甲醛中间体为基本骨架,在其分子结构中引入无机硼元素,生成键能较高的B-O键。所制得的漆酚有机硼合成产物具有比漆酚缩甲醛树脂更高的抗氧化能力、耐热性稳定性及瞬时耐高温性能,漆膜附着力、柔顺性、硬度和耐冲击强度等力学性能也有明显提高。     

A rapid approach to urushiol–copper(I) coordination polymer under UV irradiation

Urushiol–metal polymers have attracted more and more attention in China because of their wide applications as a heavy anticorrosive coating in chemical industry. They could also offer many novel properties, including catalytic activity, magnetic property, semiconductive properties, flame retarding performance, etc., and significant progresses have been achieved in synthesis and study on the mechanism of these polymers. In this paper, a rapid method for fabrication of urushiol–copper(I) coordination polymer was developed under UV irradiation within 2 min. The formation and thermo-stability of the cured films were characterized by ESR, XPS, FT-IR, TGA, etc. The results suggested the coordination occurred between copper(I) ion and oxygen under UV irradiation. In the course of UV irradiation, the hydroxyl groups on the phenyl ring of urushiol were dissociated to urushiol semiquinone, and then coordinated with copper(I) ions generated by deoxidization of copper(II) ion. At the same time, crosslinking reaction on the long aliphatic unsaturated side chain occurred to form polymer. TG analysis showed that the polymer had excellent thermo-stability.     

质子酸催化漆酚聚合的反应历程初探

采用红外光谱、紫外光谱、流变仪、GPC和1H-NMR等手段,探讨质子酸催化漆酚聚合的反应历程。结果表明,在质子酸的作用下,漆酚不饱和侧链的双键与质子酸的H+发生亲电加成,并形成碳正离子,该碳正离子与漆酚苯环发生Friedel-Crafts烷基化反应,从而生成漆酚聚合物。     

漆酚缩醛亚胺环氧涂料的研制及其性能

本文利用甲醛与环氧树脂的多元胺固化剂二乙烯三胺、漆酚反应,先合成漆酚醛亚胺(PUFD),再与环氧树脂(ER)混合,使PUFD中的活泼氢与ER中的环氧基反应,制备PUFD/ER涂料。反应过程中多元胺链和环氧基反应时相互缠绕,形成分步互穿网络聚合物。PUFD/ER涂料兼具了漆酚和环氧树脂的优异性能,耐磨蚀,硬度高,柔韧性好,光泽度大。     

Preparation of urushiol-containing poly(methyl methacrylate) copolymers for antibacterial and antifouling coatings

Synthesis of an eco-friendly and efficient antibacterial and antifouling coatings is presented by exploiting urushiol, a natural varnishing material. Since urushiol has inherent outstanding surface-protecting and antimicrobial properties, a series of poly (methyl methacrylate)-urushiol polymer compositions were prepared and fabricated into films. The prepared films were subjected to antimicrobial and antifouling studies. The polymer systems were characterized by various physico-spectroscopic techniques such as ¹H NMR, Fourier transform infrared spectroscopy, differential scanning calorimetry, atomic force microscopy, and thermal gravimetric analysis. The confocal laser scanning micrographs, obtained for Pseudomonas aeruginosa biofilm formation, demonstrated an excellent antimicrobial response of the urushiol-incorporated polymers against this bacterial strain. We also demonstrated an inhibitory attachment effect against Navicula incerta, a fouling microalgal strain.     

Adhesion in polypropylene/aluminum laminates made by extrusion coating

The purpose of this article is to study how processing parameters can promote adhesion in grafted polypropylene/aluminum laminates made by extrusion coating. The density of bonds created at the interface is quantified by X‐ray spectroscopy after dissolution of the polymer film. dynamic mechanical analysis (DMA) and tensile tests are performed to characterize the mechanical properties of polymer films. They are linked with the crystalline structure, as revealed by optical microscopy and X‐ray diffraction. A numerical model of extrusion coating is used to quantify the impact of cooling conditions on adhesion. A good correlation is found between the temperature history, the formation of bonds, and the mechanical properties of the polymer films. High temperature conditions can improve adhesion by increasing the open time for the reaction and the rate of the chemical reaction between grafted polymer chains and aluminum. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009     

Preparation in presence of urushiol and properties of acrylate latex with interparticle bridges

Acrylate latices were prepared by seeded emulsion polymerization of methyl methacrylate (MMA) and butyl acrylate (BA) in presence of urushiol with multifunctional groups (0–6 wt%). The emulsion polymerization was strongly influenced by the urushiol content. With increasing urushiol content, the conversion rate of the monomers first increased then decreased, the stability of emulsion polymerization gradually declined, the average particle size of the latex increased from 115.9 to 175.3 nm, and a change from mono- to bimodal particle size distribution occurred. Interestingly, transmission electron microscopy (TEM) showed that some particles were connected by linear bridges in presence of urushiol. Based on results of ¹H nuclear magnetic resonance (NMR) analysis, such formation of interparticle bridges is due to participation of urushiol in the emulsion polymerization of the acrylate monomers. The content of urushiol also affected the properties of latex films. With increasing urushiol content from 0 to 3 wt%, the adhesion, pencil hardness, and contact angle were markedly improved from grade 6 to grade 2, from B to 3H, and from 22° to 61°, respectively, due to formation of interparticle bridges. When the content of urushiol exceeded 3 wt%, the adhesion and pencil hardness remained unchanged, but the water contact angle markedly declined because of higher surface roughness of the latex film. Furthermore, addition of urushiol enhanced the thermal stability of the latex films.     

漆酚的生物化学活性及其应用进展

简述了漆酚致敏机理、漆酚抗菌抗病毒活性和药用活性;总结了漆酚自聚涂料、漆酚-金属（盐）聚合物及漆酚-有机物聚合物新型材料的研究进展。同时对漆酚衍生物的合成和应用进行了展望。     

水辅助自组装法制备漆酚锆聚合物多孔膜

以漆酚锆聚合物为成膜物质,采用水辅助自组装法制备漆酚锆聚合物多孔膜,用扫描电镜观察其形貌,并研究溶剂、湿度及基板润湿性等对膜形貌的影响。结果表明:当溶剂的配比(体积比)为3:2、环境湿度为85%、潮湿气体流速为400mL/min、聚合物浓度为10.0mg/mL,多孔膜的孔呈圆形且分布均匀,其孔径为0.5~1.0μm。