无锡万博涂料化工有限公司成功研制新型氟碳涂料系列树脂

对卷材工业而言．氟碳树脂并不陌生，较早的热塑性分散体氟而树脂及涂料的应用已近30年。为改善涂膜．必须拼入丙烯酸树脂，但是普遍采用热塑性丙烯酸树脂．光泽不理想。无锡万博氟碳树脂有限公司自行开发出相容性好的热固性丙烯酸树脂。FEVE氟树脂涂料除了具有PVDF体系具有的颜料润湿性和附着力和柔韧性外．     

羟基丙烯酸聚氨酯珍珠面漆通过鉴定

山东临清洪流化工总公司与省内外几所大学合作承担的省科委重点科研项目HL2 390羟基丙烯SGCT聚氨酯珍珠面漆 ,经过近一年多的开发研制 ,获得成功。通过专家论证和省级鉴定 ,经查索该产品填补国内空白 ,在同类产品中处于世界领先水平 ,可替代国外同类进口漆。该产品以高固体分羟基丙烯酸树脂和高固体分脂肪族异氰酸树脂为主 ,选配高级颜料、助剂和溶剂 ,开发研制而成。HL2 390羟基丙烯酸聚酯珍珠面漆广泛适用于黑色金属、铝合金、塑料、玻璃钢等材料制成的零件及高级轿车、豪华客车、摩托车等高档机电产品的表面涂装。能一次性高厚度成膜…     

船用低温固化丙烯酸聚氨酯防腐蚀涂料

目的研制具有低温固化性能的长效耐候船用丙烯酸聚氨酯面漆。方法采用聚天门冬氨酸树脂对羟基丙烯酸树脂进行改性,配合使用受阻胺光稳定剂与紫外光吸收剂作为体系光稳定剂,选用改性高分子不饱和羧酸盐类分散剂、氟改性聚丙烯酸酯类流平剂、聚酰胺蜡类触变防沉剂,配合使用湿法绢云母、钛白粉、重晶石粉作为体系颜填料。结果通过控制天门冬氨酸树脂NH1420的不同添加量与优化助剂体系、颜填料体系,涂料体系在-5℃环境下表干55 min,实干时间14 h,24 h可复涂,放置10 d后,漆膜硬度可达2H,涂层具有良好的长效耐候性能。结论聚天门冬氨酸树脂有效改善了丙烯酸聚氨酯面漆的低温固化性能,配合使用受阻胺光稳定剂与紫外光吸收剂,提高了涂层的耐候性。研制的船用低温固化丙烯酸聚氨酯防腐蚀涂料具有良好的低温固化性能、机械性能、耐腐蚀性能与耐候性。     

某环氧钢筋涂料防腐蚀性能研究

在海洋环境和使用融雪剂的地方,由氯离子渗透所引起的混凝土内钢筋锈蚀是导致钢筋混凝土结构失效的主要原因。研制了一种用于混凝土内钢筋表面的溶剂型环氧防腐蚀涂料体系。研究了防锈颜料、玻璃鳞片的种类、用量等对底漆和面漆防腐蚀性能的影响。结果表明,选用云母氧化铁和三聚磷酸铝作为底漆防锈颜料,颜料体积浓度(PVC)控制在25%~31%之间,面漆添加27%左右经偶联剂处理后的120目左右玻璃磷片,可获得抗氯离子渗透能力较好的涂层。     

新型喷涂用双组分聚脲 / 丙烯酸聚氨酯复合涂料

采用羟基丙烯酸树脂与聚天门冬氨酸酯制备喷涂用双组分聚脲/丙烯酸聚氨酯涂料,考察了涂料的基本性能,研究了两种树脂的配比、流平剂用量等对涂料性能的影响。结果表明,当羟基丙烯酸树脂与聚天门冬氨酸酯的质量比为35∶45,流平剂用量为0.3%时,涂料具有优良的综合性能和耐老化性能。     

浅谈FVC地坪砂浆涂料的特性

FVC地坪砂浆涂料是浙江永固为华涂料有限公司自行开发的一种新型整体砂浆地坪防腐蚀材料。它由乙烯基酯树脂、聚氯乙烯树脂、氟树脂、氟磷铁颜料、着色颜料及各种助剂组成的三组份防腐涂料,广泛应用于石油化工、造纸、冶金、电镀、热电、矿山等行业的车间、仓库等地面整体面层防腐。     

高装饰性丙烯酸树脂粉末涂料

研究高装饰性丙烯酸树脂粉末涂料,其目的在于增加粉末涂料的新品种。特别是在汽车面漆的涂装中,用装饰性丙烯酸粉末涂料(性能和溶剂型丙烯酸涂料相似)代替溶剂型涂料,以加快我国涂料工业向省能、节资、防止污染的方向发展的步伐,增加涂料品种,缩短涂装技术与世界先进技术的差距,是具有重大意义的。     

丙烯酸原位聚合制备水性铝颜料

通过丙烯酸原位聚合包覆片状铝粉制备水性铝颜料,考察丙烯酸、过硫酸铵、异丙醇和水的用量、反应温度和反应时间对颜料的缓蚀效率和涂膜光泽度的影响.结果表明:在丙烯酸、过硫酸铵、异丙醇、水和片状铝粉的质量比为0.15?0.075?0.5?25?1,95 ℃反应0.5 h的条件下,制备的水性铝颜料缓蚀效率达99.3%,涂膜光泽度为88.3 Gs.通过扫描电镜、激光粒度分析和红外光谱对水性铝颜料进行表征,结果表明水性铝颜料表面包覆了聚丙烯酸.     

地面装备用防腐涂层体系现状及发展趋势

针对地面装备的防腐涂层现状,综述了地面装备用富锌底漆/环氧云铁中间漆/高耐候面漆、环氧防腐涂料/丙烯酸聚氨酯面漆、含氯树脂防腐涂层和有机-无机聚合物涂层4种防腐涂层体系的现状及发展趋势,指出地面武器装备的防腐涂层向长效、环保的方向发展,对防腐涂层的选用具有重要的参考价值.     

防腐涂料应着重发展树脂、颜料和填料

据业内专家认为 ,高性能的合成树脂和颜料、填料是防腐蚀涂料发展的关键。1.树脂。氟树脂 ,尤其是溶剂型氟烯烃共聚树脂的成功开发 ,是今后解决氯碱、农药、硫酸行业苛刻环境中腐蚀的有效途径之一 ;对氟涂料的研究上 ,要注重配套问题。聚苯硫醚 (PPS)、改性漆酚树脂等对较高温度强腐蚀的防护行之有效 ,是值得进一步开发与应用的品种。互穿聚合物网络 (IPN)、共混技术 ,是大分子层次上的设计 ,能够获得综合性能优良的合成树脂 ,可带锈涂装 ,在酸、碱、盐等苛刻环境中应用 ,并取得很好的防护效果。2 .颜料。开发低毒或无毒长效防锈颜料是当…     

新型的治疗阿尔茨海默氏症药物(1-二甲基磷酰基-2,2,2-三氯)-乙基-1-醇烟酸醋对体外神经细胞的作用

目的: 观察本实验室合成的一种治疗阿尔茨海默氏症(AD)的药物(1-二甲基磷酰基-2, 2, 2 -三氯)-乙基^-1-醇烟酸醋(NMF),对体外培养的皮层神经细胞活性的影响以及对海人藻酸(KA)所致的神经损伤的保护作用。方法: 采用体外培养皮层神经元的方法,解剖分离 15 d胚胎小鼠皮层神经细胞, 接种于 96孔板,48 h 后加药并培养 72 h,以 MIT 法 观察 NMF 对小鼠皮层神经细胞活性的影响;同时将接种于 24 孔板的细胞预先给予 NMF,d 3 时加或不加KA处理后,以台盼蓝染色鉴别并计数死、活细胞,可得出细胞的存活率。结果: NMF 明显促进胎鼠皮层神经元活性,其中 NMF1、0. 1、10nmol·L^-1促进神经元活性增殖率分别高达 34.7%、37.4%、36. 7%, NMF 明显促进正常胎鼠皮层神经元存活卒,与对照组比较,10nmol·L^-1 NMF 对皮层神经元的存活率分别提高 39.3%、73.5%。 NMF能显著 对抗 KA 所致的神经元损伤,与 KA 损伤组相比, NMF0.1、10、10nmol·L^-1对损伤皮层神经元的保护率分别为 77.30%、80.10%、84.15%。结论: NMF 明 显促进胎鼠皮层神经元的洁性、提高正常皮层神经元,的存活卒,并能有效地保护KA所致的神经元损伤,提示 NMF 是一种很有潜力的治疗 AD 的药物。     

Three-Dimensional Growth of Coherent Ferrite in Austenite: A Molecular Dynamics Study

Coherent second phase often exhibits anisotropic morphology with specifi c orientations with respect to both the second and the matrix phases. As a key feature of microstructure, the morphology of the coherent particles is essential for understanding the second-phase strengthening eff ect in various industrial alloys. This letter reports anisotropic growth of coherent ferrite from austenite matrix in pure iron based on molecular dynamics simulation. We found that the ferrite grain tends to grow into an elongated plate-like shape, independent of its initial confi guration. The fi nal shape of the ferrite is closely related to the misfi t between the two phases, with the longest direction and the broad facet of the plate being, respectively, consistent with the best matching direction and the best matching plane calculated via the Burgers vector content(BVC) method. The strain energy calculation in the framework of Eshelby's inclusion theory verifi es that the simulated orientation of the coherent ferrite is energetically favorable. It is anticipated that the BVC method will be applicable in analysis of anisotropic growth and morphology of coherent second phase in other phase transformation systems.     

Effect of Short-Time Aging on the Pitting Corrosion Behavior of a Novel Lean Duplex Stainless Steel 2002

The effect of short-time aging in the temperature range between 400 and 1000 °C on the pitting corrosion behavior and mechanical property of a novel lean duplex stainless steel(LDSS) 2002 was investigated through the potentiostatic critical pitting temperature(CPT) tests and the Charpy impact tests. Both the pitting corrosion resistance and the toughness of aged specimens degraded due to the precipitation of detrimental secondary phases and the most significant reduction of CPT and impact energy emerged at 650 °C concurrently. The CPT of LDSS 2002 specimen aged at 650 °C decreased by 28 °C, and the impact energy dropped from 69 to 29 J/cm~2 compared with the solution-annealed sample. Transmission electron microscopy characterization showed that the main precipitates in LDSS 2002 were Cr_2N and M_(23)C_6 along the ferrite–austenite grain boundaries.     

INTRODUCTION TO PATENTS

The invention provides a method of making a mold which can reduce SOx generation rate while preventing decrease in hardening rate in the case of using sulfuric acid for a hardener composition. The method has a mixture step in which fire-resistant particles, a hardener composition and a binder composition are mixed to obtain a composition for a mold. The hardener composition contains sulfuric acid. In the mixture step, sodium carbonate is added. A molar ratio of the sulfuric acid to the sodium carbonate is 0.5 or more and 4.0 or less.     

China Foundry Week 2014

China Foundry Week, hosted by the Foundry Institution of Chinese Mechanical Engineering Society （FICMES） each year, is a large academic event in China. It is one of the ten high-impact activities sponsored by the Chinese Mechanical Engineering Society.     

17th Conference of Hydrodynamic and Electromechanical Control Engineering Call for papers

正1.Contents In order to promote the academic exchanges and technical communication of the research in the field of fluid power transmission and control,fluid control engineering specialized committee of the Chinese Society of Theoretical and Applied Mechanics will hold the 17th Conference of Hydrodynamic and Electromechanical Control Engineering on July 27-29,2014 in Tibet,Lhasa city.     

Information for Contributors

正The Transactions of Nonferrous Metals Society of China,founded in 1991 and sponsored by The Nonferrous Metals Society of China,is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology,including mineral processing,extraction metallurgy,metallic materials and heat treatments,metal working,physical metallurgy,powder metallurgy,with the emphasis     

Preface

<正>We are pleased to present this Special Issue of Transactions of Nonferrous Metals Society of China containing selected papers from the First Asian Conference on Aluminum Alloys(ACAA-2013),held in Beijing,China,13–17 October 2013.This conference has been initiated,with approval of     

Information for Contributors

The Transactions of Nonferrous Metals Society of China, founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, 1NSPEC, CA, METADEX, AJ and JICST.     

Rheology Feature of Simple Metal Melt

The rheology feature of Sb, Bi melt and alloys was studied using coaxial cylinder high-temperature viscometer. The results showed that the curve of torsion-rotational speed for Sb melt presents a linear relation in all measured temperature ranges, whereas for the Bi melt, the curve presents obvious non-Newtonian feature within the low temperature range and at relative high shear stress. The rheology feature of Sb80Bi20 and Sb20Bi80 alloy melts was well correlated with that of Sb and Bi, respectively. It is considered that the rheology behavior of Sb melt plays a crucial role in Sb80Bi20 alloy and that of Bi melt plays a crucial role in Sb20Bi80 alloy.