橡胶与金属的硫化粘接

本文综述了橡胶与金属粘接体系的发展现状，并对粘接性能的影响因素研究进行了归纳。     

粘接技术的应用

粘接技术的应用樊建军（延长油矿管理局永坪炼油厂，陕西省延川县，７１７２０８）粘接技术作为一项新工艺，已广泛应用于许多行业。现在几乎没有不用胶粘剂的地方，也几乎没有不能粘接的材料。我厂自１９９０年以来，采用粘接技术，解决了生产急待解决的难题，节省了资金...     

结构粘接技术在机械工程中的应用

1概述作为机械工程中的结构粘接技术，其进步是进入20世纪后才开始的，与铆接、焊接等联接方法相比有以下明显优势：（1）易于实现异种材料间的结合；（2）可大大减少接合部的应力集中；（3）适于精密组合；（4）可以减小振动和噪声；（5）有显著的经济效益和社会效益。当然结构粘接技术还存在许多缺陷，如质量管理较困难，大型粘接结构的加热硬化处理较困难等，但将结构粘接技术应用于重要结构领域的最大障碍是结构粘接接头的疲劳寿命可靠性预测较困难，因此工程设计人员不敢轻易将结构粘接技术用于重要结构部位，例如飞行器机体，然而这些…     

提高聚烯烃粘接性能的表面改性新技术

北京航空材料研究院研制了一种双组分室温硫化有机硅胶粘剂，工作温度为-60～350℃，颜色为红色或白色，固含量为100％，活性期为1～8h，可以粘接钢、铝、铜、钛合金等金属，也可以粘接硅橡胶和金属，对某些极性高分子材料也可以实现有效粘接。例如粘接硅橡胶和金属，250℃老化200h后室温粘接强度超过2．0MPa，250℃时的粘接强度超过1．0MPa；粘接金     

对杯类产品裂把的分析

对杯类产品裂把的原因进行了详细的分析。其中着重分析了粘接泥浆的各种性能对杯类产品杯把与杯身粘接性的影响，此外还分析了其它因素如粘接面、粘接工艺、干燥过程、烧成等对裂把的影响。     

粘接型氯丁橡胶

粘接型氯丁橡胶（ＣＲ）的特性是具有高粘接性和粘接强度，这主要产生于其高结晶性和高极性。生产方法是在８±１℃进行乳液聚合反应，经冷冻转鼓凝聚、干燥而分离。基本的粘接剂制造方法是将氯丁橡胶、氧化镁、氧化锌及抗氧剂溶于的合适的溶剂中．并加入酚醛树酯以改善对特定材料的粘接件和粘接性保持时间。用甲基丙烯酸接枝而成的接枝型ＣＲ可用于粘接ＰＶＣ。     

含磷酸酯单体的聚合物材料

本文研究了含磷酸酯单体的粘接材料；探讨了牙本质与粘接材料之间界面上的有关问题，结果说明甲基丙烯酸β－羟乙酯脱水后，在牙本质表面能形成与充填材料共聚的活性表面层，在粘接界面产生化学键，达到良好的化学粘接，以此修复骨骼因伤或病变发生缺损或断裂，其粘接强度可达１７．６ＭＰａ。     

粘接与胶粘剂

介绍了胶粘剂的粘接机理、粘接技术和胶粘剂的类型。     

表面、界面的作用与粘接机理〔二）

介绍了材料粘接过程界面区的酸碱作用与化学反应对粘接性能的贡献，其内容包括氢健力的作用，酸碱配位作用的考查，酸碱作用对粘接性能的影响和界面化学结合的形成途径及其对粘接性能的影响。     

力化学处理—一种用于粘接难粘塑料的新方法

力化学粘接法是一种用于粘接聚乙烯和聚四氟乙烯等难粘塑料的新方法，该方法主要通过力化学作用，使胶粘剂与被粘聚合物表面形成部分的化学键结合，从而大大提高接头的胶接强度。本文简要介绍力化学粘接的原理和工艺，评价了力化学粘接的效果，并讨论了影响力化学粘接的主要因素。     

Amphiphilic starch with 3-(trimethylammonium chloride)-2-hydroxypropyl and octenylsuccinyl substituents for strong adhesion to fibers

Amphiphilic starch derivatives with oleophilic octenylsuccinyl (OS) and hydrophilic 3-(trimethylammonium chloride)-2-hydroxypropyl (TMACHP) substituents were derived by the quaternization of acid-treated maize starch with N-(3-chloro-2-hydroxypropyl) trimethylammonium chloride followed by the octenylsuccinylation with octenylsuccinic anhydride. Two series of amphiphilic starches with differential degrees of substitution (DS) and mole percentages of OS to the total substituents introduced onto the starch were characterized by elemental analysis, chemical titration, and FTIR spectroscopy. The effects of the DS and mole percentage on the adhesion of the starch to fibers were investigated using a legal method (FZ/T 15001-2008). The modification was able to significantly improve the adhesion of starch to cotton and polyester fibers due to the reduced surface tension of the cooked starch paste. The adhesion depended not only on the DS of OS and TMACHP substituents, but also on the mole percentage of the OS. The amphiphilic starch had superior adhesion to acid-treated and TMACHP-functionalized starches. The adhesion of the amphiphilic starch was found to reach its maximum at a mole percentage of 70.6% OS. An increase in the total DS reduced the surface tension and favored adhesion, but disfavored reaction efficiency. Based on the adhesion and reaction efficiencies, the amphiphilic starch with a total DS in the range of 0.029–0.051 and a mole percentage of 70.6% OS showed potential for use in warp sizing.     

Adhesion at copper- polyamide 11- copper and aluminum-poly amide 11-aluminum laminate interfaces: influence of metal surface oxidation

Adhesion at copper-polyamide 11-copper and at aluminum-polyamide 11-aluminum laminate interfaces was studied. Metal-polymer-metal laminates were prepared by compression molding using processing conditions similar to the normal melt processing of polyamide 11. The results show that the time of contact at the molding temperature required to reach a constant level of adhesion is significant. Mild oxidation of the metal prior to molding improves the adhesion of polyamide 11 to aluminum; with copper, a monotonic slow decrease in adhesion with the oxidation time is observed. The presence of a metal surface affects the crystallization behavior of polyamide. With a cooling rate of 40-50°C/min, an approximately 15 μm transcrystalline polymer layer is formed with a degree of crystallinity that is almost 10% higher than the material away from the interface. The metal substrate surface oxidation prior to molding does not change the crystallinity profile of the polymer in the bulk. The polymer surface crystallinity is also a function of the time of contact with the metal substrate. The cooling rate and the metal substrate structure and its nucleating activity are responsible for the surface/bulk crystallinity ratio. Although the highly-crystalline polymer surface layer improves the adhesion to some extent, the formation of active species on the polymer surface which are able to react with the metal surface is mostly responsible for the increase of adhesion with time and its ultimate strength.     

硅烷偶联剂WD-60在环氧防腐涂料中的应用

用硅烷偶联剂WD-60对环氧防腐涂料进行改性，制得了具有优异防腐功能的新型环氧涂料。研究了WD-60偶联剂对环氧防腐涂料附着力和耐盐雾腐蚀性能的影响，确定了WD-60偶联剂的最佳用量。结果表明当颜填料和有机溶剂经脱水处理，WD-60偶联剂的用量为1．0％时，可较大幅度地提高环氧涂料的附着力和耐盐雾腐蚀性能，此时环氧涂料的拉开法附着力为16．3MPa，耐盐雾腐蚀达720h。     

Effect of high-temperature heat treatment on the properties of sealant Viksint U-2-28

The dependence of the ultimate shear strength of a lithium aluminosilicate ceramic-to-metal adhesive joint with the sealant Viksint U-2-28 on the thermal history of the samples was studied. A temperature threshold for a change in the strength of the adhesive joint was established. Possible mechanisms for the appearance of this threshold in terms of a change in the contribution of different components of the sealant to its adhesion properties, depending on the thermal aging regimes, are discussed.     

The role of chemical surface modification for structural adhesive bonding on polymers - Washability of chemical functionalization without reducing adhesion

This study investigates the role of surface functionalization to increase adhesion forces on polymers. The effects of two different physical pre-treatment methods (oxygen low-pressure plasma - LPP, vacuum-UV - VUV) are investigated on four different polymer matrices (polyetheretherketone - PEEK, polyetherimide - PEI, polyethersulfone - PES and the epoxy resin RTM6). Polymer surfaces were additionally washed after surface treatment with different polar solvents. Surface chemistry, wettability, and topography were investigated before pre-treatment, after pre-treatment and after washing of the samples using x-ray photoelectron spectroscopy (XPS), contact angle measurements and atomic force microscopy (AFM).The results show, that washing of the samples after pre-treatment lead to a chemical surface condition similar to the initial surface. Interestingly, the tensile bond strength of centrifugal adhesion tensile test (CATT) specimens however remained high. In consequence, the thus far widely accepted understanding of surface functionalization as the dominating factor for adhesion promotion on polymers has to be re-evaluated.     

miR-9-5p,miR-675-5p and miR-138-5p Damages the Strontium and LRP5-Mediated Skeletal Cell Proliferation,Differentiation, and Adhesion

This study was designed to evaluate the effects of strontium on the expression levels of microRNAs (miRNAs) and to explore their effects on skeletal cell proliferation, differentiation, adhesion, and apoptosis. The targets of these miRNAs were also studied. Molecular cloning, cell proliferation assay, cell apoptosis assay, quantitative real-time PCR, and luciferase reporter assay were used. Strontium altered the expression levels of miRNAs in vitro and in vivo. miR-9-5p, miR-675-5p, and miR-138-5p impaired skeletal cell proliferation, cell differentiation and cell adhesion. miR-9-5p and miR-675-5p induced MC3T3-E1 cell apoptosis more specifically than miR-138-5p. miR-9-5p, miR-675-5p, and miR-138-5p targeted glycogen synthase kinase 3 β (GSK3β), ATPase Aminophospholipid Transporter Class I Type 8A Member 2 (ATP8A2), and Eukaryotic Translation Initiation Factor 4E Binding Protein 1 (EIF4EBP1), respectively. Low-density lipoprotein receptor-related protein 5 (LRP5) played a positive role in skeletal development. miR-9-5p, miR-675-5p, and miR-138-5p damage strontium and LRP5-mediated skeletal cell proliferation, differentiation, and adhesion, and induce cell apoptosis by targeting GSK3β, ATP8A2, and EIF4EBP1, respectively.     

Copper plating on titanium alloy 6-2-4-2 using an in situ high voltage pulse followed by plate-up

We have used an in situ technique that removes the oxide from the surface of the alloy titanium 6-2-4-2, followed by copper electroplating of the surface. The oxide removal is accomplished by means of a short voltage pulse from a discharging capacitor between the cathode (titanium) and anode while submerged in the plating solution. Within seconds thereafter, the electrodes are switched to a separate power supply for electroplating copper onto the titanium. From the experimental data, we believe that the oxide is removed by means of dielectric breakdown mechanisms giving rise to a statistical probability that all of the surface oxide is removed. When this occurs, we obtain adherent depositions based on standard tape testing of the deposit. We determine a set of voltage and energy density conditions which are most likely to result in good adhesion. Scanning electron micrographs of adherent copper deposits are presented.     

人LNα4链LG3-4组件的优化表达及活性检测

目的优化人层粘连蛋白α4链LG3-4组件基因在大肠杆菌中的表达条件。方法分别从诱导温度、诱导时间、IPTG浓度等方面进行优化。表达产物经Ni-NTA介质纯化,MTT法检测目的蛋白对人肺癌A549细胞粘附及增殖功能的影响。结果在20℃下,1mmol/L的IPTG诱导6h,目的蛋白呈最佳可溶性表达;在37℃下,2mmol/L的IPTG诱导4h,呈最佳包涵体形式表达。纯化后目的蛋白纯度达96%,且具有良好的增强人肺癌A549细胞伸展和粘附的功能。结论已确立了hLNα4LG3-4重组蛋白在大肠杆菌中的最佳表达条件。     

高效防锈底漆D—31

双组份环氧聚氨酯防锈底漆Ｄ－３１有三个主要特点：（１）极好的防锈性能;（２）漆膜有高度的弹性和柔韧性,从而能适应基材的大形变;（３）优异的附着力。其主要用途除可作为严酷环境下的高效防锈、防腐蚀底漆外,还可用做聚氨酯的层间粘接性能改进剂。     

抗黄变剂在硝基漆中的作用

论述抗黄变剂对硝基漆的储存以及漆膜的黄变性和附着力等性能的影响。