高效抗污卷铝涂料的研制

通过对各个原材料的深度筛选,合理搭配,研制出高效抗污卷铝涂料。着重研究了主体树脂的改性及各种助剂的应用,制得的涂料具有高效抗污性和抗菌性,同时漆膜具有优异的附着力、机械加工性、耐化学品性和耐腐蚀性,特别适合用于室内外装潢、幕墙、天花吊顶等场合。     

简述OEM汽车涂料的新进展

介绍了OEM汽车涂料的组成及复合涂层体系,全球五大涂料生产商所占汽车涂料市场份额概况以及CED涂料、高固体分涂料、水性涂料、粉末涂料等主要汽车涂料的技术进展情况,并指明了汽车涂料未来发展的方向与挑战。     

New printing inks with barrier performance for packaging applications: Design and investigation

Barrier properties of packaging materials against moisture and oxygen penetration are of high relevance. Enhanced protection of existing materials against weather conditions can be achieved by application of printed coatings. To improve barrier performance of packaging materials, new inks for obtaining printed coatings with a layered structure were developed and investigated. The proposed ink compositions for flexographic printing on paper substrates are based on an environmentally friendly acrylic binder and contain inorganic fillers with platelet particles incorporated in the polymer matrix. Coatings based on the developed printing inks demonstrate significantly decreased water vapour permeability compared to traditional polymer inks. The effect of decreased permeability was investigated considering inks rheological behaviour, the coating structure, mechanical properties, surface energy and water uptake for different ink formulations. The developed inks provide variable optical properties including coatings with a relatively high transparency. The development of the functional barrier inks contributes to saving natural resources by prolonging life performance of packaging materials and goods.     

Aqueous polyacrylate/poly(silicone‐co‐acrylate) emulsion coated fertilizers for slow nutrient‐release application

Waterborne polyacrylate/poly(silicone‐co‐acrylate) emulsions were synthesized to develop coated fertilizers. The effects of the n‐butyl acrylate (BA)/methyl methacrylate (MMA) ratio, vinyltriethoxysilane, and synthesis method on the water resistance, glass‐transition temperature, mechanical properties, and nutrient‐release profiles were investigated. The results show that miniemulsion polymerization with a BA/MMA ratio of 55:45 was the most suitable for slow nutrient‐release applications. Under these conditions, the preliminary solubility rate of the nutrient was about 3%, and the 30‐day cumulative nutrient release was 15% at 25°C. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 40369.     

Polydopamine hydrophilic modification of polypropylene separator for lithium ion battery

The modified polypropylene (PP) separators with self‐polymerization of dopamine on the surfaces are prepared by a simple solution‐immersion method to improve the interfacial hydrophilic and discharge performance. The contact angle test and the liquid electrolyte uptake capacity test results show that the wettability and the electrolyte‐retention ability of polydopamine‐modified separator are improved significantly. The robust and thin polydopamine layer on the surface also enhances thermal performance and tensile strength of the modified PP separator certified by DSC and tensile strength tests. The ionic conductivity of the modified PP separator is up to 3.08 mS·cm^?1, ～2.5 times of the bare separator. Good discharge capacity retention and C‐rate discharge performance are demonstrated by a 2025 coin half‐cell with the liquid electrolyte‐soaked polydopamine modified PP separator sandwiched between lithium metal anode and LiFePO₄ cathode. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 40543.     

The preparation and analysis of chlorinated ethylene vinyl acetate copolymer as coating film in gas‐solid phase

In this article, the feasibility of preparing chlorinated ethylene vinyl acetate copolymer (CEVA) in gas–solid phase is investigated. Furthermore, the structure of the chlorination product and its performance as a coating material are also analyzed. Both the molecular structure and crystallinity of the product are well studied with various characterization methods, including ¹H‐NMR, Fourier transform infrared, gel permeation chromatography, differential scanning calorimeter, and so forth. The results show that the chlorination of EVA in gas–solid phase is feasible and the chlorine content of CEVA can be made over 60%. It is also found that when the chlorine content is low, chlorination can easily occur in ethylene section but rarely happens in vinyl acetate section. Nevertheless, when the chlorine content of CEVA rises over 35%, ? CH in the vinyl acetate section is also found chlorinated. The removal of hydrogen chloride is induced during chlorination, producing double bonds in the main chain. Besides, the trace of ? CCl₂ structure can also be found in the chain of CEVA. After chlorination, the crystallization will change and is negatively correlated with chlorine content. As the film forming material for coating, CEVA has its best performance with 50% chlorine content. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 41093.     

Physical study of room‐temperature‐cured epoxy/thermally reduced graphene oxides with various contents of oxygen‐containing groups

In this study, the effects of different oxygen‐containing group contents in thermally reduced graphene oxides (TRGs) for enhancing the physical properties of epoxy nancomposites was examined. The epoxy/TRG nanocomposites (ETNs) were prepared by a room temperature curing method in the presence of TRGs containing different oxygen‐containing groups and were then characterized by Fourier transform infrared spectroscopy. TRG contents with higher oxygen‐containing group contents (ca 33%) were found to show better dispersion capability in the epoxy matrix than TRGs with lower oxygen‐containing group contents (ca 11%) based on morphological observations by transmission electron microscopy. The better dispersion capability of TRGs with higher oxygen‐containing group contents in ETN membranes was found to lead to significantly enhanced mechanical strength, thermal stability and thermal conductivity based on measurements of dynamic mechanical analysis, tensile tests, thermogravimetric analysis and by the transient plane source technique. © 2014 The Authors. Polymer International published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry     

涂料涂装行业VOC减排浅析

VOC排放问题引起政府的关注,以VOC为代表的特征和毒性污染物已经成为我国大气污染防治的重点。分析了涂料涂装行业VOC减排面临的形势,对比了世界各地区的环保（大气净化）法规,总结了降低VOC的技术措施,提出了削减涂料涂装行业VOC排放量的建议。     

Flame retardancy and thermal property of novel UV-curable epoxy acrylate coatings modified by melamine-based hyperbranched polyphosphonate acrylate

A novel melamine-based hyperbranched polyphosphonate acrylate (MHPA), successfully synthesized via the Michael addition polymerization of 2-(2-amino-ethylamino)-4,6-bisethylamino-1,3,5-triazine with tri(acryloyloxyethyl) phosphate, was blended with the epoxy acrylate (EA) to prepare UV-cured flame retardant coatings. The study of their flammability revealed that MHPA can improve the flame retardancy and the sample with 45 wt% MHPA (EA3) showed a good intumescent behavior when combusted. The results of their thermal degradation displayed that MHPA had a dual effect on the thermal stability of EA: leading to its earlier degradation catalyzed by acidic species from the relatively weak phosphorus-bearing parts, but improving the thermal stability of the char layer at high temperature due to the formed intumescent phosphorus–carbon compounds. Besides, the total release amount of gas products of EA3 was much lower than that of pure EA and various flammable gases like hydrocarbons and highly toxic CO were also reduced     

建筑用红外反射隔热涂料的研究进展

本文详述了红外反射隔热涂料的国内外研究进展,指出了该领域全色系、多功能、智能变色三个研发切入点,提出彩色及深色建筑涂料市场存在巨大缺口,并认为红外反射隔热填料与红外反射颜料、色浆等技术的结合是建筑涂料未来的发展趋势。