紫外光固化涂料的研制

研制了一种紫外光固化环氧丙烯酸酯涂料。讨论了光强度、光引发剂、预聚物等对涂料固化性能的影响     

大分子单体对丙烯酸增稠剂印花性能的影响

探讨了丙烯酸酯类大单体对丙烯酸和丙烯酸酯水乳增稠剂的增稠效果及其它性能的影响。结果表明，大单体能显著提高聚合物的增稠效果及抗电解质等性能。     

有机硅单体种类、用量和加入方式对丙烯酸酯乳液涂膜性能的影响

丙烯酸酯乳液是乳液涂料优良的粘合剂,在外墙涂料应用中占主导地位,因耐水性和透湿性的缺陷,限制了在外墙涂料领域的发展。随着高层建筑的兴起,对涂料耐水性、耐侯抗污性的要求也逐渐提高。文中对有机硅氧烷单体的种类、用量和加入方式对丙烯酸酯乳液涂膜性能的影响。实验结果证明,有机硅可以很好的提高涂膜的耐水性、附着力和力学性能,值得我们推广。     

SR-1型UV固化涂料的研制及应用

以脂肪族聚氨酯丙烯酸酯预聚作为基料的UV固化涂料具有固化速度快、附着力强、高光泽、耐候性好等特点,有极好的装饰性,特别适合于户外产品的军光。介绍了该涂料的配方组成和制备,讨论了预聚体的结构、活性稀释剂及施工工艺对附着力的影响。     

含氟丙烯酸酯阴极电泳涂料的制备及防腐性能

选用异佛尔酮二异氰酸酯(IPDI)、封闭剂3,5-二甲基吡唑(DMP)、可阳离子化扩链剂三乙醇胺(TEOA)、含氟丙烯酸酯单体ZonylTM及其它丙烯酸酯单体合成了用于含氟阴极电泳(CED)涂料的阳离子型丙烯酸酯树脂和阳离子型封闭异氰酸酯固化剂(TId). 通过傅立叶变换红外光谱对合成的树脂和固化剂进行了表征;采用差示扫描量热、热重分析法分析了CED涂料的固化行为,发现CED膜可在较低温度(90 ℃附近)开始交联. 对含氟CED膜接触角的测定证实,含氟阴极电泳涂料是得到低表面能涂层的有效方法. 利用电化学阻抗谱对漆膜的耐腐蚀性进行了分析,发现含氟丙烯酸酯的引入可以提高漆膜的防腐性能.     

含氟丙烯酸酯阴极电泳涂料的制备

选用异佛尔酮二异氰酸酯（IPDI）﹑封闭剂3, 5－二甲基吡唑（DMP）﹑可阳离子化扩链剂三乙醇胺（TEOA）﹑含氟丙烯酸酯单体ZonylTM及其它丙烯酸酯单体合成了用于含氟阴极电泳（CED）涂料的阳离子型丙烯酸酯树脂和阳离子型封闭异氰酸酯固化剂TId. 通过傅立叶变换红外（FTIR）对合成的树脂和固化剂进行了表征; 用差示扫描量热（DSC）﹑热重分析（TGA）观测了CED涂料的固化行为, CED膜可在较低温度（90℃附近）开始交联. 对含氟CED膜的接触角的测定证实, 含氟阴极电泳涂料是得到低表面能涂层的有效方法. 利用电化学阻抗谱（EIS）对漆膜的耐腐蚀性进行了分析, 发现含氟丙烯酸酯的引入可以提高漆膜的防腐性能.     

马来酸酐改性环氧豆油丙烯酸酯齐聚物的研究

用马来酸酐和环氧豆油丙烯酸酯反应 ,制成一种改性齐聚物。由该改性齐聚物配制的紫外光固化涂料 ,其涂层固化速度、硬度、附着力等综合性能优于环氧豆油丙烯酯齐聚物。     

热固性丙烯酸酯树脂的工艺概述

热固性丙烯酸酯树脂具有很好的耐紫外线优良性能,它广泛地用作塑料、涂料等工业生产的原材料,和热塑性丙烯酸酯树脂一样,大都以丙烯酸酯、甲基丙烯酸酯和其它乙烯系单体构成共聚物。 一、热固性丙烯酸酯树脂的性能 热固性丙烯酸酯树脂是通过树脂分子侧链上的活性宫能团与其它树脂产生交联反应而成。热固性树脂分子量通常略低于热塑性树脂,以获取不挥发份含量高的树脂溶液。     

多官能度聚氨酯丙烯酸酯树脂的合成及性能研究

以异佛尔酮二异氰酸酯(IPDI)、聚丙二醇(PPG)、丙烯酸羟乙酯(HEA)、三羟基丙烷二丙烯酸酯(TMPDA)及季戊四醇三丙烯酸酯(PETA)为主要原料合成了一系列的多官能度的聚氨酯丙烯酸酯(PUA)预聚物。通过傅立叶红外光谱(FT-IR)分析证实了PUA的结构。研究了固化膜的凝胶含量、力学性能,并通过动态力学热分析(DMA)进行了表征。结果表明:与单官能度丙烯酸酯封端的聚氨酯光固化膜相比,多官能度丙烯酸酯的引入有助于固化膜交联程度的提高,当紫外光照射35 s时,三官能度的丙烯酸酯封端的聚氨酯凝胶含量提高了3.6%,拉伸强度提高了264%。     

紫外光固化松节油聚氨酯丙烯酸酯的合成

为降低聚氨酯涂料的生产成本,提高市场竞争力,采用松节油聚酯二元醇(TP)、甲苯二异腈酸酯(TDI)、丙烯酸羟丙酯(HPA)合成了可紫外光(UV)固化的聚氨酯丙烯酸酯(PUA).研究反应温度、摩尔比、反应时间、催化剂用量对产物合成的影响,并用红外光谱对产品进行表征,考察紫外光固化涂料固化涂膜的铅笔硬度、附着力、耐冲击性、耐候性等性能.结果表明,适宜的工艺条件:原料配比为n(HPA):n(TDI):n(TP)=1.2:1:0.5;第1步反应温度30～35℃,反应时间2.5～3 h,催化剂二月桂酸二丁基锡(DBL)的用量为物料总质量的0.8%,第2步反应温度65～70℃,反应时间2.5～3 h,DBL的用量为物料总质量的0.6%.制得的松节油聚氨酯丙烯酸酯固化涂膜性能良好,能够达到使用要求.     

电致发光有机薄膜中载流子的输运

研究电致发光有机薄膜中载流子的输运过程,迁移率是描述输运过程的关键物理量。根据载流子在格点间跳跃（hopping)输运理论,提出了一个有机薄膜中载流子输运的理论模型,推导出了迁移率的理论公式,以聚对苯乙炔（poly(p-phenylene vinylene)为例,数值计算了其在不同温度和电场下的迁移率,与实验符合得很好。     

可食性甲基纤维素复合膜的制备及性能研究

以甲基纤维素(M C)作为基本的成膜物质制备M C膜,在此基础上通过添加其它物质制备出M C复合膜.用抗张强度(TS)、伸长率(E)和水蒸气透过系数(fW)等性能指标评价膜的性能,并确定各种添加物质的最佳添加量,得到性能较好的M C复合膜.     

棉花膜下滴灌田间小气候规律的试验研究

试验研究表明，棉花膜下滴灌的田间小气候优于普通沟灌，在光、温、水等方面能够较好配置，从而可充分利用光热资源，提高棉花的产量和品质。     

高像质非晶硅薄膜晶体管结构参数的设计

分析了非晶硅薄膜晶体管的开关特性，提出了通断电流和电阻、组成膜厚度、沟道宽长比以及开口率的设计要求和参数取值，讨论了高显示性能和高成品率a—Si TFT结构设计的最新进展。     

膜电位法测定水面痕量成膜物质

成膜物质在水面展开为单分子膜，利用表面膜电位测量仅可以测出空气／水界面的膜电位值，我们发现单位面积上成膜物质的量与膜电位呈很好的线性关系，分析灵敏度达到ｎｇ／ｃｍ＾２级，可于于环保监测。     

现代男西裤结构设计研究

伴随着现代着装审美观念的转变,现代男西裤廓型发生了一定的变化。结合男性下肢体特征和运动规律,对现代男西裤主要部位的采寸、放松量设计以及裆部、腰部、挺缝线等主要部位的结构设计进行了深入的分析和详细的阐述,为提升现代男西裤穿着的功能性、舒适性及美观性提供了充分的理论依据。     

Development of multi-functional nano-paint for energy harvesting applications

The multi-functionality of lead magnesium niobate-lead titanate/paint(PMN-PT/paint) nanocomposite films for energy harvesting via piezoelectric and pyroelectric effects is described. PMN-PT/paint films have been fabricated by a conventional paint-brushing technique to provide a low-cost, low-temperature and low–energy route to create multi-functional films. The properties investigated included dielectric constants, ε' and ε', as a function of temperature, frequency and composition. From these parameters, it is indicated that the dielectric constants and AC conductivity(σ_(AC)) increase with an increase of filler content and temperature, implying an improvement of the functionality of the films. The results revealed that σ_(AC) obeyed the relation σ_(AC) =Aω~s, and exponents, was found to decrease by increasing the temperature. The correlated barrier hopping was the dominant conduction mechanism in the nanocomposite films. The efforts were made to investigate the performance of nanocomposite films to mechanical vibrations and thermal variations. A cantilever system was designed and examined to assess its performance as energy harvesters. The highest output voltage and power for a PMN-PT/paint based harvester with a broad frequency response operating in the-31-piezoelectric mode were 65 mV and 1 nW, respectively.Voltage and power were shown to be enhanced by application of thermal variations. Thus, films could be utilized for combined energy harvesting via piezoelectric and pyroelectric characteristics.     

Self-assembly of mesoscopically ordered chromatic polydiacetylene/silica nanocomposites

Nature abounds with intricate composite architectures composed of hard and soft materials synergistically intertwined to provide both useful functionality and mechanical integrity. Recent synthetic efforts to mimic such natural designs have focused on nanocomposites, prepared mainly by slow procedures like monomer or polymer infiltration of inorganic nanostructures or sequential deposition. Here we report the self-assembly of conjugated polymer/silica nanocomposite films with hexagonal, cubic or lamellar mesoscopic order using polymerizable amphiphilic diacetylene molecules as both structure-directing agents and monomers. The self-assembly procedure is rapid and incorporates the organic monomers uniformly within a highly ordered, inorganic environment. Polymerization results in polydiacetylene/silica nanocomposites that are optically transparent and mechanically robust. Compared to ordered diacetylene-containing films prepared as Langmuir monolayers or by Langmuir-Blodgett deposition, the nanostructured inorganic host alters the diacetylene polymerization behaviour, and the resulting nanocomposite exhibits unusual chromatic changes in response to thermal, mechanical and chemical stimuli. The inorganic framework serves to protect, stabilize, and orient the polymer, and to mediate its function. The nanocomposite architecture also provides sufficient mechanical integrity to enable integration into devices and microsystems.     

Oriented growth and assembly of zeolite crystals on substrates

The aligned array and thin film of zeolites and molecular sieves Possess a variety of potential applications in membrane separation and catalysis, chemical sensors, and microelectronic devices. There are two main synthesis methods for manufacturing the aligned arrays and thin films of zeolites and mo- lecular sieves, i.e. in situ hydrothermal reaction and self-assembly of crystal grains on substrates. Both of them have attracted much attention in the scientific community worldwide. A series of significant progress has been made in recent years. By the in situ hydrothermal synthesis, the oriented nucleation and growth of zeolite and molecular sieve crystals can be achieved by modifying the surface properties of substrstes or by changing the composition of synthesis solutions, leading to the formation of uni- formly oriented muIticrystal-aligned arrays or thin films. On the other hand, the crystal grains of zeo-lites and molecular sieves can be assembled onto the substrste surface in required orientation using different bondages, for instance, the microstructure in the array or thin film can be controlled. This review is going to summarize and comment the significant results and progress reported recently in manufacturing highly covered and uniformly aligned arrays or thin films of zeolites and molecular sieves. It involves （1） in situ growth of highly aligned zeolite arrays and thin films via embedding func-tional groups on the substrste surface, modifying the surface microstructure of substrates, as well as varying the composition of synthesis solutions; （2） assembly of zeolite and molecular sieve crystals on various substrates to form aligned arrays and thin films with full coverage by covalent, ionic, and in-termolecular coupling interactions between crystals and substrates; （3） coupling surface assembly with microcontact printing or photoetching technique to produce patterned zeolite arrays and thin films. Finally, the functionality and applications of zeolite arrays and thin films are briefly intr     

邻苯二胺活性膜的电化学聚合

采用循环伏安法制备了邻苯二胺电聚合膜。研究了聚邻苯二胺（ＯＤＢ）合成过程中单体浓度、扫描速率、溶液中氢离子浓度、电极材料、阴离子种类、聚合时间等对聚合电量的影响,提出了最佳聚合方案,即在０．０１５ｍｏｌ／ＬＯＤＢ＋０．４ｍｏｌ／ＬＫＣｌ＋０．１ｍｏｌ／ＬＨＣｌ溶液中,以１００ｍＶ·ｓ－１的速率循环扫描５０ｍｉｎ。根据红外光谱初步推测：单体浓度低时可聚合形成类似吩嗪的桥式化学结构;而浓度高时形成１,２,４取代的链式结构。