环氧聚氨酯—烯类聚合物互穿网络防腐蚀涂料

研制的环氧聚氨酯－烯类聚合物互穿网络（ＩＰＮ）防腐蚀涂料是由组分Ｉ（苯乙烯－丙烯腈聚合物）和组分Ⅱ（环氧聚氨酯）组成的，具有良好的防腐蚀性和附着力，可用于多种设备和设施的防腐蚀。介绍了该涂料的制法。讨论了组分Ⅱ的诸种因素对ＩＰＮ性能的影响。列举了ＩＰＮ涂层的性能指标。     

硅烷偶联剂对光固化PUA/SiO2杂化涂料的改性研究

研究溶胶-凝胶法制备聚氨酯丙烯酸酯（PUA）/纳米二氧化硅（SiO2）复合涂料中加入硅烷偶联剂进行原位改性的作用机理,以期得到性能优良的有机-无机杂化纳米复合涂料。考察了硅烷偶联剂用量的变化对聚氨酯丙烯酸酯涂料性能的影响。结果表明,用硅烷偶联剂对溶胶-凝胶法制备的纳米二氧化硅进行改性,能够实现纳米颗粒的均匀分散,并在其表面形成良好的界面结合层;且适量的硅烷偶联剂的加入使聚氨酯丙烯酸酯涂料显示出优良的机械性能,表现出纳米材料特有的既增强又增韧特性,尤其是耐磨性能可以提高7倍。     

国内期刊荟萃

聚氨酯丙烯酸酯共聚乳液的合成及其涂膜性能;低温快干氨基丙烯酸聚氨酯涂料的研究;耐高温导电导热防腐蚀涂料的研制和机理分析;有机硅改性丙烯酸防老化涂料的制备及性能研究;腰果酚改性环氧无溶剂绝缘防水重防腐涂料在大型石油储备罐中的应用……     

蓖麻油改性环氧聚氨酯防腐蚀涂料的研制

介绍了一种蓖麻油改性的环氧聚氨酯防腐蚀涂料.以蓖麻油改性异氰酸酯预聚物和环氧树脂为基料,以价格较为低廉的滑石粉、钛白粉、沉淀硫酸钡为颜填料制备了成本较低,性能较为优异的防腐蚀涂料.检测了优化条件下制备的涂料的性能.以蓖麻油改性环氧聚氨酯防腐蚀涂料和未经蓖麻油改性的环氧聚氨酯防腐蚀涂料进行防腐蚀性能对比,蓖麻油改性环氧聚氨酯防腐蚀涂料的耐酸、碱、盐水等防腐蚀性能更好.     

国内期刊荟萃

氟聚合物在核壳乳液及耐沾污外墙涂料;萜烯树脂乳液对聚氨酯乳液性能的影响; 复合陶瓷涂层对碳钢防腐蚀性能的电化；累托石有机改性及应用研究；水性UV固化聚氨酯丙烯酸酯涂料的制备及其合成工艺研究……     

一种光固化手感涂料的制备及性能研究

以弹性聚氨酯丙烯酸酯为主体,添加特殊改性脂肪族聚氨酯丙烯酸酯预聚物、消光粉、助剂等制备出了光固化手感涂料,该涂料具有良好的弹性、柔韧性、机械性能。讨论了弹性聚氨酯丙烯酸酯和特殊改性脂肪族聚氨酯丙烯酸酯预聚物的筛选及其对手感等性能的影响。     

IPN改性丙烯酸聚氨酯涂料

利用ＩＰＮ技术将芳香族异氰酸酯引入互穿聚合物网络支，取代部分脂肪族异氰酸酯。由于两种网络的互穿共容作用，使芳香族异氰酸酯造成的耐候性问题有效地得到改进。通过调整丙类烯酸组分的单体组成和涂料配方，研制出一种耐候性的ＩＰＮ改性丙烯酸聚氨酯涂料。曝晒试验结果表明，该涂料的耐候性优于一种市售的脂肪族丙烯酸聚氨酯涂料。     

高光泽耐高温硅丙树脂改性聚氨酯涂料的研究

用有机硅－ 丙烯酸酯共聚树脂对聚氨酯进行改性，以ＨＤＩ／ＴＤＩ预聚物（ＨＴＰ） 作为交联组分，可制备性能优异的高光泽耐高温硅丙聚氨酯涂料。简述了这种涂料的制备方法和影响其性能的因素     

改性聚氨酯涂料的研究进展

综述了醇酸树脂、丙烯酸酯、环氧树脂及有机硅树脂等材料改性聚氨酯涂料的研究方法,并简单介绍了改性后的聚氨酯涂料的特点及性能,同时对今后改性聚氨酯涂料的研究和应用发展作了展望。     

新型防腐蚀水下固化环氧树脂涂料

水下固化环氧树脂涂料用于金属防腐,其形成的涂层防腐蚀性能优异、机械强度高、附着性好。它由多硫化物改性环氧树脂、多元胺固化剂、多磷酸盐和专用助剂等组成。主要用于水上桥梁、港湾设施和护岸设备等水下结构件的防腐蚀涂装。     

江苏油田采油平台用防腐蚀涂料的性能评价

结合各防腐涂料的实际应用特点和不同性能以及泄洪道区域环境特点,比较了10种以上不同配套涂层,分别采用在泄洪道典型区域现场挂片试验和实验室加速试验等试验方法进行各种性能的评价。结果表明:环氧富锌/丙烯酸聚氨酯、IPN/丙烯酸聚氨酯和IPN/环氧煤沥青等配套涂层体系是适合于江苏油田采油平台用的防腐涂料。     

丙烯酸树脂改性的水性聚氨酯耐水性研究

本文研究了用丙烯酸树脂改性的水性聚氨酯耐水性特征。研究结果表明：通过聚氨酯与丙烯酸树脂机械共混能一定程度提高其耐水性;而实施化学共混即核－壳型聚合过程,形成的核－壳型聚合物具有二者树脂分子链相互贯穿与缠结的互穿网络结构,可以实现二者树脂的性能优势互补和耐水性能显著提高。     

环氧-聚氨酯互穿网络防腐蚀涂料

研制的环氧-聚氨酯互穿网络(IPN)防腐蚀涂料具有优异的防腐蚀性能和附着力。介绍了该涂料的制法。列举了IPN涂层的性能指标。讨论了影响涂层性能的各种因素。     

FT—01重防腐蚀涂料的研制与应用

以蓖麻油、甲苯二异氰酸酯、苯乙烯与丙烯腈单体为主要原料，合成了具有互穿网络结构的ＦＴ－０１重防腐蚀涂料。该涂料附着力强，可带锈涂装，耐磨性及防腐蚀性能优异。在酸、碱、水、油、化工大气等环境中应用，具有良好的耐腐蚀性能。     

PU/EP/PPGDA三元IPN弹性体的结构研究

用红外光谱 (IR)、扫描电子显微镜 (SEM )、X光电子能谱 (XPS)研究了以聚氨酯 (PU)为第一网络的三元IPN聚氨酯 /环氧树酯 /聚丙二醇二丙烯酸酯 (IPNPU/EP/PPGDA)弹性体的互穿特性和形态结构。研究结果表明 ,各元素在三元IPN表面和内部分布不一致 ,表明三种聚合物在IPN中的分布是不均匀的 ,这种差异与IPN组成、组成聚合物间的相容性以及形态结构有密切联系     

浇注型聚氨酯阻尼材料研究进展

从无机填料、互穿聚合物网络(IPN)技术、分子结构设计3个方面分析了目前国内浇注型聚氨酯阻尼材料研发现状,指出分子结构设计是制备高强度、高阻尼、耐动态疲劳性能的聚氨酯阻尼材料的有效方法之一。     

交流阻抗技术在S97耐盐雾防腐蚀涂料配方设计中的应用

在S97耐盐雾防腐蚀涂料的配方设计阶段，采用电化学交流阻抗技术确定了环氧云铁防锈底漆和丙烯酸聚氨酯面漆的颜料体积浓度，并对S97耐盐雾防腐蚀涂料的防腐蚀性能进行了研究。     

Recent advances in interpenetrating polymer networks

We review the synthesis, morphology, and physical and mechanical properties of IFNs as well as the related pseudo-IPNs, in which only one of the polymers is crossliriked. Recent studies have shown that the degree of phase separation achieved in these materials is strongly dependent on the compatibility of blends of the linear polymer constituents of the IPN components as well as the kinetics of chain extension and the presence of grafting between component polymers. We illustrate this by a series of IPNs consisting of a polyurethane and an acrylic copolymer. The acrylic is a typical automotive enamel. An enhancement in properties results, which is dependent on the amount of grafting and the kinetics of polymerization. Also discussed are IPNs of a polyurethane and an epoxy, which exhibit a synergism in adhesive properties, and IPNs of a RIM polyurethane with several epoxies and unsaturated polyesters. In addition, also reported are the preliminary studies on the first successful preparation of a three-component IPN, consisting of a polyurethane, an epoxy, and an acrylic.     

Mechanical characterization and modeling stress relaxation behavior of acrylic–polyurethane-based graft-interpenetrating polymer networks

The stress relaxation behavior of acrylic–polyurethane (PU)-based graft-interpenetrating polymer networks (IPNs) was characterized via dynamic mechanical analysis (DMA) and modeled using finite element method (FEM) analysis. Stress relaxation of glassy IPN specimens was experimentally studied under flexural testing, while rubbery IPN specimens were tested in tension. The effects of varying the styrene content in the acrylic copolymer phase, compatibility of the two phases in IPNs, and changing the concentration of acrylic copolymer and PU were studied. A higher percentage of styrene content resulted in higher homogeneity of IPN specimens, and decrease in initial modulus for acrylic copolymer specimens. Additionally, glassy IPN specimens with 90% styrene shows resistance to relaxation as high as acrylic copolymer samples. Experimental results were used to develop a numerical model to study stress relaxation response of specimens. While polymer systems have been studied computationally, numerical modeling of IPN systems is still in its infancy. A three-dimensional FEM model was developed using the Generalized Maxwell model and four-term Prony series constants, which were extracted from the stress relaxation experiments. With four terms in the Prony series, a good match was observed between experimental observations and results from the FEM model.     

The influence of ageing of epoxy coatings on adhesion of polyurethane topcoats and protective properties of coating systems

The dependence of adhesion and protective properties of coating systems on surface properties of epoxy intermediate coatings, aged and non-aged before an application of polyurethane topcoats, were examined. The intermediate coatings were aged 500 h in UV chamber. The surface free energy and polar groups were estimated after ageing. After applying polyurethane topcoats on aged and non-aged epoxy coatings, resistance to salt spray and thermal shocks were tested as well as internal stresses were measured before and after corrosion tests.The results showed that adhesion in coating systems with polyurethane topcoats applied on aged epoxy coatings depends strongly on the degradation degree of epoxy intermediate coatings and the value of generated internal stresses. Coatings with good adhesion retention in corrosion environments have good protective properties even when temporary blistering has occurred.