白炭黑载锌无机抗菌剂制备与性能研究

以白炭黑(无定型SiO2)为载体,采用水浴加热搅拌法,通过白炭黑负载Zn2+制备抗菌剂前驱体和前驱体焙烧固化制备了白炭黑载锌无机抗菌剂,并将其在涂料中添加制备了抗菌涂料.对Zn2+浓度、白炭黑固含量、混合液pH值、焙烧温度、焙烧时间等抗菌剂制备条件进行了试验考察和优化,对白炭黑载锌无机抗菌剂和抗菌涂料性能进行了测试表征.结果表明,白炭黑载锌无机抗菌剂和抗菌涂料均具有良好的抑菌性,其中,白炭黑载锌无机抗菌剂最小抑菌浓度为:对大肠杆菌19 mg/mL,对金黄色葡萄球菌6 mg/mL;添加8wt%白炭黑载锌无机抗菌剂涂料抗菌率为:对大肠杆菌90.48%,对金黄色葡萄球菌98.77%.     

偶联剂对纳米材料分散的影响及相关光固化涂料研究

纳米材料由于特殊的结构,不容易在紫外光固化体系中分散稳定,通过不同硅烷偶联剂和钛酸酯偶联剂的处理发现,钛酸酯偶联剂(JN-C)有助于提高纳米材料在紫外光固化体系中的分散稳定性,在此基础上,制备了紫外光固化纳米木器底漆,测试了其硬度、耐水性、耐醇性和耐磨性等理化性能,结果表明该涂料具有良好的理化性能。     

紫外光固化抗菌涂料的研制

采用UV聚合将自身有杀菌作用的杂环低聚物与有机纳米抗菌材料及无机纳米抗菌助剂配合,制成具有长效抗菌和复合抗菌效果的功能性紫外光(UV)固化涂料。检测结果表明:该涂料抗大肠杆菌率高达99.9%以上,抗葡萄球菌率高达99.9%,是一种长效抗菌涂料。     

紫外光固化漆酚基纳米复合涂料性能的对比分析

将紫外光固化技术与有机/无机纳米杂化材料制备技术相结合,以可再生天然生漆为主要原料,制得了紫外光固化漆酚和紫外光固化漆酚基纳米SiO_2/TiO_2/ZnO/OMMT的4种复合涂料。对比分析了其与漆酚甲醛缩聚物的常规物理机械性能、抗紫外线性能、抗溶剂性和耐化学介质性能。结果表明,紫外光固化漆酚和以其为基础的4种纳米复合涂料的各项性能均较漆酚甲醛缩聚物有较大提高。     

无机抗菌剂在涂料中的应用

抗菌涂料是90年代中期国外新开发的功能性涂料，基于对环境卫生和国民健康之需求．国内也积极从事无机抗菌剂及抗菌涂料的研究并取得进展。本文从抗菌剂种类、无机抗菌剂的抗菌机理及主要特点，抗菌涂料制备、性能及检测方法等方面进行了探讨与论述。     

羟基磷灰石抗菌剂在涂料中的应用

通过共沉淀和离子交换的方法,将钛和锌离子共掺杂在羟基磷灰石上,制备了羟基磷灰石抗菌剂。研究了其与另外3种无机抗菌剂(锌型沸石抗菌剂、银型沸石抗菌剂、氧化钛光催化抗菌剂)在涂料中的应用。结果证明:锌型抗菌涂料对大肠杆菌和金黄色葡萄球菌的抗菌效果较差,其余3种类型抗菌涂料具有很好抗菌效果。但是,银型抗菌剂易引起涂料变色,氧化钛光催化抗菌剂在涂料中难分散且易加快涂料老化,而羟基磷灰石抗菌剂既具有良好的抗菌性能,且对涂料性能没有影响。还介绍了羟基磷灰石抗菌剂的抗菌机理。     

纳米Ce/TiO2无机抗菌剂的制备及其性能评价

以纳米锐钛矿型TiO2粉体和硝酸铈为原料,采用浸渍法制备了纳米Ce/TiO2无机抗菌剂,运用抑菌圈法对其抗菌性能进行了评价,并对其抗菌机理进行了探讨. 结果表明,制备得到的纳米Ce/TiO2无机抗菌剂在黑暗中具有优异的抗菌性能,其抗菌机理为稀土元素铈离子溶出抗菌.     

紫外光固化聚合物基 SiO2 纳米 复合材料的研究进展

概述了紫外光固化聚酯丙烯酸酯低聚物的国内外研究进展,并从纳米SiO₂微粒的分散方法方面综述了国内外纳米复合材料的制备方法,同时介绍了以纳米SiO₂作为无机填料的有机-无机纳米复合材料在紫外光固化涂料中的应用情况。     

溶胶-凝胶法制备紫外光固化纳米复合涂料

以常用的环氧丙烯酸(EA)树脂为原料,采用溶胶-凝胶法,制备有机/无机紫外光固化纳米复合涂料。研究了EA树脂含量对溶胶-凝胶过程的影响;实验发现当EA树脂含量高于85%时,随着反应的进行体系会逐渐变浑浊,而EA树脂的含量低于85%时,体系始终是均一透明的。通过紫外光固化技术能够制备无干裂的完整薄膜。在EA中加入纳米SiO2可以改善涂膜的硬度、附着力和抗冲性能。     

LG化学扩产新戊二醇 以增加对华出口

北京天之岩健康科技有限公司研制生产的天爽牌涂料专用无机抗菌剂，不久前通过了北京市科委组织的鉴定。它主要采用纳米组装技术制备抗菌粉体材料，可与各类树脂乳液涂料复合制备抗菌功能的涂料，除增加抗菌功能外，涂料其他性能和加工工艺不受影响。该产品主要有以下特性：一是高效抗     

纳米ZnO/ZnOw/HDPE抗菌性能及力学性能研究

研究了氧化锌晶须（ZnOw）对纳米ZnO／HDPE（高密度聚乙烯）抗菌性能的影响，并对制备的抗菌塑料表面形貌、力学性能等进行表征。结果表明，纳米ZnO／ZnOw／HDPE复合抗菌塑料的抗菌效果优于纳米ZnO／HDPE抗菌塑料的，添加ZnOw的复合抗菌材料在抗菌剂质量分数为2％时，对大肠杆菌的抗菌率已达到99．9％，相当于纳米ZnO的添加量为1.4％时，抗菌率即可达到99．9％。ZnOw可有效改善纳米ZnO的表面分散状态，并且复合抗菌剂的添加对材料的力学性能没有影响。     

软段含离子基团的阴离子型水性聚氨酯胶粘剂的研究——Ⅰ软段结构的影响

本文以含有不同离子基团的聚酯多元醇为软段,采用丙酮法合成了一系列水性聚氨酯乳液。研究了不同离子基团的聚酯多元醇和不同软段结构对其干膜物理机械性能和吸水率的影响。     

Preparation and characterization of konjac glucomannan and sodium carboxymethylcellulose blend films

The novel blend films of konjac glucomannan (KGM) and sodium carboxymethylcellulose (NaCMC) were prepared by casting the mixed polymer aqueous solutions. The physical properties of the blend films from konjac glucomannan and sodium carboxymethylcellulose were investigated by using FT‐infrared (FTIR), wide‐angle X‐ray diffraction (WAXD), differential thermal analysis (DTA), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and measurements of mechanical properties. The experimental results showed that the occurrence of the interactions between KGM and NaCMC molecular chains through hydrogen bond formation, and the physical properties of the films largely depend on the blending ratio. The thermal stability, mechanical properties of both tensile strength, and elongation at break of the blend films were improved by blending KGM with NaCMC. The surface morphology of the films observed by SEM was consistent with the results mentioned above. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 26–31, 2001     

阳离子型水性聚氨酯乳液的合成及表征

合成了一系列的阳离子型水性聚氨酯乳液。研究了软段相对分子质量、预聚体的NCO含量对其干膜物理机械性能的影响以及中和剂种类对乳液性能的影响。通过动态力学分析对其阻尼行为进行了表征。结果表明：预聚体的NCO含量不同即硬段含量不同对阳离子型水性聚氨酯的微相结构和阻尼行为有很大的影响。     

Influence of apple flavor absorption on physical and mechanical properties of poly(ethylene terephthalate) films

Poly(ethylene terephthalate) (PET) films (280‐μm film thickness), which are used in food packaging, were immersed into 160‐ and 320‐ppm apple flavor solution for 14, 28, and 56 days at 5, 25, and 40°C, respectively. At the end of this period, the changes in the PET films were investigated by measuring the mechanical and physical properties. The mechanical properties were determined by examining changes in the Young's modulus. The changes in the physical properties were investigated by Fourier transform IR spectroscopy and scanning electron microscopy (SEM). The formation of microcracks in the structure of PET films was observed by SEM. According to the results of those investigations, the apple flavor affects PET films, even at very low concentrations and temperatures. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 1802–1807, 2006     

Effects of gamma radiation on the dynamic mechanical and swelling behavior of styrene butadiene block and random copolymers

The physical structure of a number of styrene-butadiene copolymers were investigated via dynamic mechanical and swelling studies on uncrosslinked and gamma-radiation cross-linked films that had initially been solvent cast from toluene or methyl ethyl ketone. The mechanical behavior of these films before and after crosslinking was found to depend on the material history as well as the chemical structure of the copolymer, in agreement with observations made by other experimental techniques. A simple morphological interpretation was given to the dynamic mechanical spectra as a function of radiation dosage and a limited discussion of the swelling behavior is included.     

纳米蒙脱土改性天然胶乳的制备及其性能研究

采用胶乳接枝插层法制备了纳米蒙脱土改性天然胶乳，并对其性能进行了研究。结果表明，采用胶乳接枝插层法不仅能实现天然胶乳与甲基丙烯酸甲酯（MMA）的接枝，而且能与有机改性蒙脱土插层。通过这种方法制备的改性胶乳的硫化胶乳胶膜具有优良的物理性能和热力学性能。     

Effect of Graphitic Nanosheets on the Physical Properties of Cyclic Olefin Copolymer Composite Films

In this study, microstructural and physical properties of cyclic olefin copolymer composite films prepared by melt processing method and using of graphitic nanofillers, namely, graphite, graphite oxide, and reduced graphite oxide were investigated. Structural and physical properties of the chemically modified graphites and composite films were characterized by the Fourier transform infrared, X-ray diffractometer, scanning electron microscopy, dynamic mechanical analyzer, and thermogravimetric analyzer methods. It was found that the composite films including reduced graphite oxide exhibited exfoliated structure whereas graphite- and graphite oxide-based films showed intercalated structure. It was also obtained that all composite films showed superior gas barrier performance compared to the cyclic olefin copolymer.     

软段含离子基团的阴离子型水性聚氨酯胶粘剂的研究(Ⅰ)——软段结构的影响

以含有不同离子基团的聚酯多元醇为软段,采用丙酮法合成了一系列水性聚氨酯乳液。研究了不同离子基团的聚酯多元醇和不同软段结构对其干膜物理机械性能和吸水率的影响。     

Chitosan‐finished Antheraea mylitta silk fibroin nonwoven composite films for wound dressing

In this study, we aimed to produce nonwoven wound‐dressing films made of Antheraea mylitta (tasar) silk fibroin by a solution‐casting method. These nonwoven films were finished with chitosan solutions of different concentrations ranging from 0.75 to 2% w/v with a pad–dry method to fabricate nonwoven composite films. Chitosan‐finished tasar fibroin nonwoven composite films (CMTFFs) showed higher mechanical and dynamic mechanical properties as compared to nonwoven tasar fibroin. The physical, structural, and thermal properties of the films were investigated. The hemocompatibility, cytocompatibility, and biodegradation tests showed that the CMTFF was a promising material for use as a wound dressing. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133, 44341.