金银丝保护层涂料中交联助剂的合成及性能研究

本合成了一种交联助剂，将该交联助剂以不同用量分别加到原金银丝保护层涂料中得到了新的涂料，然后涂布于PET镀铝膜，并在170℃烘烤30s后切丝制得金银丝样品。检测样品的各项指标(耐酸碱蒸煮、耐晒、耐有机溶剂、耐磨擦和柔韧性)，确定了交联助剂在金银丝保护层涂料中的作用及其用量的关系。     

固化剂对钢结构用超薄膨胀型水性环氧防火涂料性能的影响

以环氧乳液为基料,聚磷酸铵、三聚氰胺、季戊四醇(APP/MEL/PER)为防火助剂研制了超薄膨胀型钢结构防火涂料。通过调整环氧乳液/固化剂比例,研究了固化剂用量对涂料防火、防腐性能的影响。通过交联度测试进一步讨论了环氧乳液与固化剂比例对涂料性能的影响。结果表明:固化剂占环氧乳液含量20%时,涂层的防火性能和防腐性能均较好。     

核电站用水性环氧涂料的研制

介绍了核电站用水性环氧涂料的配方、合成工艺及性能指标。讨论了水性胺环氧加成物固化剂、颜填料及助剂对涂料性能的影响。所配制的水性环氧涂料与溶剂型环氧涂料性能相当，并达到了核电站专用涂料的性能要求。     

基于水性环氧酯的氧化交联型水性工业防腐涂料的制备

开发了一种应用于工业防腐领域的水性工业涂料。采用特定的丙烯酸乳液和水性环氧酯树脂作为成膜物,添加颜填料和合适的助剂,制备得到水性涂料。研究了水性树脂种类、涂料助剂等配方参数对涂料性能的影响,得到了综合性能优异的水性涂料配方。     

WEC402水性环氧固化剂在水性环氧地坪涂料中的应用

使用WEC4 0 2水性环氧固化剂制备的水性环氧地坪涂料的配方、工艺 ,讨论了固化剂与环氧树脂的配比、颜填料、助剂等对涂料性能的影响。     

耐黄变环氧改性有机硅耐高温涂料的研制

介绍了以环氧改性有机硅树脂为基料,添加耐高温颜料、填料、溶剂、助剂等制备出一种能在200~300℃环境中长期使用而不变色的浅色耐黄变耐高温涂料,该涂料耐高温后具有良好的装饰性能及机械性能。讨论了基料及颜料的筛选及其对耐高温性能的影响。     

水性环氧防腐涂料配方中助剂的应用研究

水性环氧防腐涂料应用对现有社会发展具有重要影响,很多行业发展中为了提升防腐性能,都已经将涂料防腐性能改进作出了分析。实践证明,以助剂添加,能够提升水性环氧防腐涂料防腐性能,对于改进防腐涂料应用控制具有重要保障意义。鉴于此,本文针对水性环氧防腐涂料配方中助剂的应用研究进行了分析,旨在本文研究帮助下,能够为助剂添加与水样环氧防腐涂料应用提供参考。     

双组分水性环氧防腐底漆的研制

采用水性环氧树脂作为基料,添加防锈颜填料、水性助剂以及水性环氧树脂固化剂制备了双组分水性环氧防腐底漆,研究了固化剂活泼氢当量、活泼氢和环氧基当量比、颜填料、流变助剂、防闪锈剂对涂料和涂膜性能的影响,得到了具有良好的物理机械性能和防腐性能的双组分水性环氧防腐底漆。     

纳米二氧化硅浓缩浆在涂料中的应用研究

探讨了Nanos4000-2纳米二氧化硅浓缩浆在涂料中的添加工艺,分析了Nanos4000-2纳米二氧化硅浓缩浆对环氧涂料、聚氨酯涂料性能的影响.研究表明:Nanos4000-2纳米二氧化硅浓缩浆通过前添加研磨工艺加入环氧涂料、聚氨酯涂料中能达到完全分散的状态;采用Nanos4000-2纳米二氧化硅浓缩浆改性后的环氧涂层防腐蚀性有明显提升;用其改性后的聚氨酯涂层的耐老化性、耐磨性、硬度及表面接触角均有所提高,涂层光泽变化不大.     

厚膜型无溶剂环氧重防腐涂料的研究

比较了不同环氧树脂、环氧固化剂、颜填料、助剂等的特性,制备了厚膜型无溶剂环氧涂料,并进行了各项性能的检测,结果表明,该涂料具有极低的VOC含量,符合环保要求,适用于要求长效防腐的钢构件。     

耐保温层下腐蚀涂料的制备及性能研究

以环氧有机硅树脂改性酚醛环氧制备了一种耐保温层下腐蚀涂料,以 TGA（热重分析）、 DMA（动态力学分析）、 DSA（表面接触角分析）等对涂层性能进行评估,考察了树脂比例、固化剂种类、颜填料种类对涂层耐热性能、机械性能和防腐性能的影响。结果表明：环氧有机硅树脂与改性酚醛环氧的质量比为 4∶6 时可有效提高涂膜耐热性能;采用该树脂,以改性脂环胺为固化剂,片状云母氧化铁红为主颜料制备耐温涂料时,涂层具有良好的机械性能、耐热性能、耐腐蚀性能,并通过 250 ℃条件下耐保温层下循环腐蚀性能要求。     

Water uptake of epoxy coatings modified with γ-APS silane monomer

Epoxy resin was modified by a silane monomer, γ-aminopropyltrimethoxy silane (γ-APS), and was used as the protective coatings for LY12 aluminum alloys. The aim of the modification is to reduce the water uptake of polymeric coatings. The water absorption of coatings was measured by coating capacitance method in 3.5 wt.% NaCl aqueous solution. The result indicates that water uptake of epoxy coatings modified with 1.0 wt.% γ-APS decreases compared with pure epoxy coatings, whereas larger amounts of sliane result in the deterioration in performance against water permeation, due to the excessive consumption of epoxide group in epoxy resin by amino-group in silane agent, thus reduce the cross-linking of epxoy coating as a result of presence of excessive curing agent (polyamide). T_g of silane-modified coatings increases slightly after immersion, extremely contrasting with that of pure epoxy coating, which was observed to decrease significantly after water permeation. The formation of Si–O–Si structure resulting from the hydrolysis and condensation of silane components during the immersion in aqueous media may be a reasonable explanation for the abnormal change in T_g of silane-modified coatings. In addition, all silane-modified coatings display better protection performance, which is characterized by higher charge transfer resistances (R_ct) and lower double layer capacitance (C_dl) at substrate/electrolyte interface.     

钢结构用超薄型水性环氧防火防腐涂料的研制

以液体环氧树脂为基料树脂,以水性胺为固化剂;以聚磷酸铵、三聚氰胺、季戊四醇、氯化石蜡为膨胀阻燃体系;以纳米TiO2、可膨胀石墨为增效剂;以复合铁钛粉为防锈颜料,制备了钢结构用超薄型防火防腐涂料。当环氧涂层的交联度达到理论交联度的50％～70％时,涂层既有优良的防火隔热性能,又有优良的防腐蚀性及机械性能。     

Corrosion protection by epoxy/poly(aniline-co-pyrrole)/ZnO nanocomposite coating

Anticorrosion behavior of epoxy/poly(aniline-co-pyrrole)/ZnO (EPAPZ) coating on stainless steel 304 alloys is investigated using the electrochemical impedance spectroscopy (EIS) method, and the coating is compared with epoxy/polyaniline/ZnO (EPAZ) and pure epoxy (EP) coatings. Scanning electron microscopy images are used for structural characterization and to compare the particle size of nanoparticles. EIS result showed that coating resistance for EPAPZ, EPAZ, and EP coatings after 90 days of immersion in 3.5% NaCl was 1.18 × 10⁷, 1.08 × 10⁶, and 4.28 × 10⁴ Ω cm⁻², respectively. In addition, the volume percentage of water absorbed by the coating, which could be obtained by coating capacitance, is 2.81, 4.21, and 9.11, respectively. Immersion tests showed 0.063, 0.194, and 0.752% of weight loss in the metals under EPAPZ, EPAZ, and EP coatings, respectively. These results show that the EPAPZ coating has superior anticorrosive performance compared with EPAZ and EP coatings. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 48265.     

Incorporation of silica network and modified graphene oxide into epoxy resin for improving thermal and anticorrosion properties

In this study, the silica network and functionalized graphene oxide (GO) were incorporated into the epoxy coating systems, which was aimed to improve the thermal property and corrosion resistance of epoxy coatings. First, tetraethyl orthosilicate (TEOS) oligomers and epoxy hybrid was fabricated through sol–gel method. Then the (3-aminopropyl) triethoxysilane (APTES) modified graphene oxide (FGO) was added into the epoxy hybrid composite to obtain anticorrosion coatings. Fourier transform infrared spectroscopy, thermogravimetric analysis (TGA), Raman spectrum, and X-ray photoelectron spectrum were conducted to evaluate the structural information of GO and APTES modified GO nanosheets. The results indicated that the APTES successfully grafted onto the surface of GO sheets. Besides, TGA curves, electrochemical measurements and salt spray test were also carried out to characterize the thermal performance and corrosion resistance of GO based epoxy coatings. The TGA results revealed that the thermal performance of epoxy coating containing silica network and FGO nanofiller (ES/FGO) was significantly strengthened compared to pure epoxy. The initial degradation temperature of epoxy coating was increased from 300 to 343.7°C after incorporation of silica component and FGO. The EIS measurements demonstrated that the impedance modulus of ES/FGO was significantly higher than neat epoxy, which indicated that the corrosion resistance of epoxy was substantially strengthened after introduction of silica component and FGO. The corrosion rate and inhibition efficiency of epoxy composite coatings were also shifted from 1.237 × 10⁻⁷ mm/year and 76.6% (for neat epoxy) to 1.870 × 10⁻⁹ mm/year and 99.6% (for ES/FGO), respectively. The salt spray test also revealed that the silica and FGO can improve the corrosion resistance of epoxy coating. Additionally, the dispersion of GO sheets was also enhanced after the modification of APTES siloxane.     

耐热环氧／有机硅／酚醛树脂涂料的研制

有机硅改性环氧树脂涂料是目前应用比较广的一种耐高温涂料。本研究选用乙氧基封端的有机硅低聚体对环氧树脂进行改性,用酚醛树脂作体系的固化剂,详细对比了改性树脂及涂料制备中时间、温度及用料比例对涂膜性能的影响,制备了一种兼有有机硅、环氧和酚醛树脂优点的可耐500℃以上的高温涂料。     

Effect of the incorporation of montmorillonite-layered double hydroxide nanoclays on the corrosion protection of epoxy coatings

A series of layered double hydroxide (LDH)/montmorillonite (MMT) nanocomposite coating, LDH nanocomposite coating, and MMT nanocomposite coating were successfully prepared. The nanocomposite materials were characterized by X-ray diffraction and scanning electron microscopy (SEM). To understand the effect of MMT and LDH on the corrosion inhibition performance of epoxy resin coatings immersed in 3.5 wt% saline solution at 90°C, electrochemical impedance spectroscopy and an autoclave test were performed on epoxy resin; epoxy resin blended with LDH, MMT, and LDH + MMT (LM) coatings painted on Q345 steel. The metal/coating interfaces were observed by SEM and energy-dispersive spectroscopy. Results showed that addition of LDH and MMT improved the protection properties of the epoxy resin coatings. The corrosion protection of the LM nanocomposite coating was superior to that of the other coatings. This finding can be attributed to the ionic selectivity and barrier effect of MMT and LDH nanoclay platelets dispersed within the composite coatings.     

一种不锈钢用涂层研究

研制了一种适用于奥氏体不锈钢材料的重防腐涂料。介绍了该涂料配方的设计思路。通过盐雾试验对成膜物质进行了筛选,获得了由A、B组分组成的无色透明的重防腐涂料。其中A组份的配方为:1改#性树脂25%,2#改性树脂51%,高沸点溶剂20%,助剂4%。B组份为:环氧树脂50%,增韧树脂10%,溶剂38%,助剂2%。对涂饰该涂料的不锈钢器皿作了工作介质浸泡试验、毒性检测和附着力检测实验。结果表明,经过工作介质浸泡1个月后涂层耐蚀性优良;毒性检测符合国家标准;附着力达到5B等级。     

A study on the anticorrosion performance of the epoxy-polyamide nanocomposites containing ZnO nanoparticles

Epoxy nanocomposites were prepared using different loadings (2, 3.5, 5 and 6.5 wt%) of ZnO nanoparticles. Nanocomposites were applied on steel substrates. Samples were immersed in 3.5 wt% NaCl solution for 1344 h. Corrosion resistance of the coatings was studied by an electrochemical impedance spectroscopy (EIS). The effects of addition of nanoparticles on the mechanical properties of the epoxy coating were studied by a dynamic mechanical thermal analysis (DMTA). Curing behavior of the coatings containing nanoparticles was studied by a differential scanning calorimeter (DSC). Atomic force microscope (AFM) was utilized to investigate the surface topography and surface morphology of the coatings. Coating resistance against hydrolytic degradation was studied by FTIR (Fourier Transform Infrared).Results showed that addition of low loadings of nanoparticles can increase T_g of the composite. Decrease in T_g and cross-linking density of the coating were observed at high loadings of nanoparticles. It was found that nanoparticles can influence the curing behavior of the epoxy coating. Nanoparticles improved the corrosion resistance of the epoxy coating. Increase in coating resistance against hydrolytic degradation was obtained using nanoparticles.     

水性环氧涂料用固化剂的探索

水性环氧涂料是水性涂料发展的重要品种之一,水性环氧涂料用固化剂是影响其涂料性能的主要因素之一,因此开发新型水性环氧涂料用固化剂则别具现实意义.文中对水性环氧涂料用固化剂的发展历程作了探讨,并对各类水性环氧涂料用固化剂的特点进行扼要的解说,从中探索出水性胺加成物固化剂是水性环氧涂料用固化剂中最具发展前景的品种.