EPDM／甲基乙烯基硅橡胶共混工艺

提高ＥＰＤＭ的混炼温度，加入少量活性剂，再加入甲基乙烯基硅橡胶的共混工艺，与常温共混工艺相比，增加了ＥＰＤＭ与ＶＭＱ的相容性。实验结果表明，该工艺使共混胶胶相结合细微均匀，减小了ＥＰＤＭ与ＶＭＱ硫化速度的差距，降低了共混硫化胶的ｔｇδ，提高了硫化胶的拉伸强度、定伸应力和体积电阻率、降低了永久变形和压缩永久变形。     

白炭黑胶料混炼工艺探讨

研究GK270N型密炼机混炼排胶温度及氧化锌、防老剂加入顺序对白炭黑胶料密炼工艺性能、硫化特性及物理性能的影响。结果表明，排胶温度为160℃时混炼效果好；氧化锌在一段加入，混炼胶门尼粘度降低明显，定伸应力和抗撕裂性能较好；防老剂在一段加入，混炼胶工艺性能及其硫化胶物理性能最差。     

白炭黑胶料混炼工艺探讨

研究GK270N型密炼机混炼排胶温度及氧化锌、防老剂加入顺序对白炭黑胶料密炼工艺性能、硫化特性及物理性能的影响。结果表明，排胶温度为160℃时混炼效果好;氧化锌在一段加入，混炼胶门尼粘度降低明显，定伸应力和抗撕裂性能较好；防老剂在一段加入，混炼胶工艺性能及其硫化胶物理性能最差。     

分散剂FT-78在轮胎胎面胶中的应用

研究分散剂FT-78在轮胎胎面胶中的应用，并与胶易素T-78进行对比试验。加入分散剂FT-78的硫化胶物理性能与加入胶易素T-78硫化胶相差不大，但耐磨性略优；加入分散剂FT-78可以降低混炼能耗、缩短混炼周期；挤出胎面表面光滑、致密性好；可提高胎面胶成品的拉伸强度、撕裂强度和耐磨性；大大降低胶料成本。     

苯甲酸对硫黄硫化NR/SBR胶料性能的影响

采用苯甲酸对含大量炭黑的高硬度胶料性能进行改进。试验结果表明，苯甲酸加入到硫黄硫化的NR／SBR并用胶中，可增大硫化胶的硬度，降低最小门尼粘度，从而提高胶料焦烧的安全性，有利于胶料的加工成型；加入苯甲酸对硫化胶的物理性能影响不大。     

改性脲醛胶的研制

利用加入三聚氰胺，聚乙烯醇等改性剂来改善脲醛胶的耐水性和耐老化性，同时降低游离醛的含量，在使用时加以改性填料，可提高脲醛胶的剪切强度，并降低脲胶醛胶的成本。     

白炭黑在SBR/TPI并用胶中的应用

研究白炭黑和硅烷偶联剂对SBR/反式-1,4-聚异戊二烯(TPI)并用胶性能的影响.结果表明,在SBR/TPI并用胶中加入白炭黑可以保持或提高硫化胶的物理性能,降低生热,当白炭黑/炭黑并用比为32/18时,硫化胶的综合性能较好;在SBR/TPI并用胶中加入硅烷偶联剂可以提高硫化胶的定伸应力、拉伸强度等性能,特别是能减小磨耗和降低生热,但过量加入硅烷偶联剂会降低硫化胶的撕裂强度和抗湿滑性.     

Si 69在炭黑填充NR/BR/NBR共混物中的应用

在炭黑填充NR／BR／NBR共混物中加入Si 69，共混物硫化速度降低、物理机械性能提高；Si 69用量为4份时，硫化胶的综合性能最佳。将140℃下用Si 69处理30min后的炭黑加入NR／BR／NBR共混物，可降低硫化胶在65℃下的tan 6值，表明材料的滚动阻力下降。     

硅橡胶/丙烯酸酯橡胶并用胶的加工与性能

研究了甲基乙烯基硅橡胶（MVQ）／丙烯酸酯橡胶（ACM）并用胶中MVQ与ACM的配比，补强剂，加工工艺及其它添加剂对并用胶性能的影响，结果表明：MVQ与ACM并用后，其耐油性得到较大提高，且随着CM用量的增大，并用胶的耐油性逐步提高；补强剂对提高并用胶耐油性有一定作用，补强剂用量越多，并用胶的耐油性越好；补强剂的加入顺序对并用胶的各项性能有一定影响；加入羟基硅油可降低并用胶的扯断永久变形。     

尿素、硝酸钠对两步法制淀粉胶黏剂几种性能的影响

瓦楞纸板流水线用淀粉胶黏剂的特性越来越受到人们的关注,本文以此为出发点,通过用改性剂尿素和硝酸钠对两步法制备玉米淀粉胶黏剂进行改性研究,探讨了黏度、初黏性和糊化温度这三个性能指标对胶液的影响。结果发现尿素能够在一定程度上增加胶液的黏度,并且加入量超过一定限度,黏度呈直线上升,能够降低初黏性和糊化温度;硝酸钠的加入也在一定程度上降低了胶液的黏度,并且加入量超过一定限度,黏度降低很大。同时也能够降低初黏性。     

碳纤维片材加固胶粘剂的研制

主要探讨了碳纤维片材加固胶粘剂配方的设计和实施，并提出了相应施工工艺。通过鉴定的碳纤维结构胶已经在数百项工程中得到应用，经几年时间考验，证实该胶各项性能指标优良，能充分满足碳纤维片材加固的要求。     

新型铝箔衬纸复合用酪蛋白胶的研制

介绍了一种以干酪素为主要原料研制的铝箔衬纸胶粘剂的配方、制备工艺及技术性能。采用氨水溶解干酪素,硼砂作交联剂。讨论了固含量、碱、交联剂、反应时间、反应温度等因素对胶粘剂的制备与性能的影响。结果表明:在氨水用量为2.5g,尿素22g,硼砂3.5g,反应温度为65℃左右时制得的酪蛋白胶性能最佳。尿素可提高胶的韧性,使胶粘剂形成胶膜,同时可降低胶粘度,增加胶的流动性。     

Finite Element Analysis of Functionally Graded Bond-Lines for Metal/Composite Joints

Failure in adhesive joints is usually the result of the non-uniform distribution of stresses that generally appears along the bond-lines, with peak values near the ends of the overlaps and inner zones where the adhesive essentially does not work. For joints comprised of dissimilar materials, the stress fields are also affected by the absence of symmetry. The present work is focused on “functionally graded adhesive joints” to avoid this phenomenon and to improve the strength of aluminum/composite joints under shear loads. Looking for the most favorable grading of properties, a search/optimization procedure is implemented based on finite element calculations and considering continuous variations of the material responses within the adhesive layer. After this, a comparative analysis of the continuous distributions obtained against discrete/“banded” approximations is performed, as these configurations are more feasible for manufacturing and therefore more suitable for industrialization. In order to avoid singularities appearing in the “banded” solutions simulations, a numerical strategy is proposed to model the transitions between the different adhesive phases.     

Influence of addition curing silicone formulation and surface aging of aluminum adherends on bond strength

In spite of many studies, knowledge about the fundamental factors influencing adhesion between addition curing silicones and aluminum substrates is very limited. The aim of this publication is to evaluate the influence of the formulation and the surface state of the adherend on bond strength. For this purpose, the composition of an addition curing silicone was systematically varied and the effects on both material and bond properties were examined. Additionally, the influence of surface aging at different humidities (0% r. h., 34% r. h., 82% r. h.) of acid etch pretreated aluminum substrates was considered. It is shown that the mechanical properties of the silicone material can be easily adjusted over a wide range by changing the formulation. Although high tensile strengths up to 9.2 MPa for the silicone material can be achieved, lap-shear strengths remain moderate at approximately 3.5 MPa. Predominant adhesive failures show the limited adhesive strength of the basic formulation without additives. Basic ingredients of addition curing silicones without additives are able to reach a certain adhesive strength. However, this strength was quite limited and adhesion promoters are required to further improve adhesion. The humidity at which the pretreated substrates are stored has an overall minor influence on bond strength. Surprisingly, bond strength tends to increase with the storage time of aluminum substrates despite lower surface energies in comparison to freshly pretreated substrates. All in all, the storage conditions of aluminum had a rather small influence on adhesion, whereas the composition of the silicone adhesive strongly influences bond strength.     

Influence of the mechanical behaviour of different adhesives on an interference-fit cylindrical joint

Hybrid adhesive joining techniques are often used in many industrial sectors to design lightweight structures. A hybrid adhesive joint results from the combination of adhesive bonding with other traditional joining methods such as welding and mechanical fastening, with the aim of combining the advantages of the different techniques and overcoming their drawbacks.This study focuses on the interference fitted/adhesive bonded joining technique. In this application, two cylindrical components are coupled together by inserting one into the other, after having placed an adhesive between them. Generally anaerobic acrylic adhesives, also known as “retaining compound” are used for this application. However the effect of the adhesive nature and of its mechanical and adhesive responses on the performance of the hybrid joint is still unclear. The aim of the present research is to improve the understanding of the behaviour of different adhesives, including rigid epoxies and flexible polyurethanes, in the presence of an interference-fit. Static strength of bonded and unbonded interference fit joints have been compared in order to investigate the role of the different adhesives.     

Preparation of a new polymer-modified adhesive mortar using fine iron tailings as aggregate

In this paper, a new polymer-modified adhesive mortar is prepared using the fine iron tailings, eco-cement, redispersible latex powder, additives, and water. In our study, the fine iron tailings are used to replace the natural river sand as the mortar aggregate and the optimal process conditions are determined by the orthogonal experiment. The obtained results are shown as follows: The ratios of cement–sand and polymer–cement are 1:2.5 and 4%, respectively, with the aggregate modulus 0.81 and water reducing agent 0.5% (cement-based). The properties of the polymer-modified adhesive mortar obtained under the optimal process conditions conform to JC/T 547-2005 (China Professional Standard: Ceramic Tile Adhesive). Moreover, the microstructure of the polymer-modified adhesive mortar is studied and discussed. The results show that the network formed by the intertwined polymer film can prevent the merger of micro-cracks and improve the adhesive mortars’ overall cohesion. Therefore, adding polymer to the adhesive mortar can improve its failure stress and enhance its bonding strength.     

无机粒子处理烟用聚丙烯纤维的吸附性能

为了提高聚丙烯纤维的吸附性能,采用烟用粘合剂/纳米SiO2、ZnO和Al2O3对其进行处理。以吸附苯蒸汽作为评价指标,采用静态饱和吸附法和常压流动吸附法测定了处理后的聚丙烯纤维的吸附性能。研究表明:处理后的聚丙烯纤维的吸附性能有了较大提高;其中,采用烟用粘合剂/纳米SiO2处理的聚丙烯纤维的吸附性能最好。     

Improvements and limitation of soy protein-based adhesive: A review

Soy protein is known for its eco-friendly, sustainable, and biodegradable qualities that are likely used as raw material in producing bioadhesive. However, soy protein-based adhesive are lacking in terms of adhesive strength and water-resistance compared to commercial formaldehyde-based adhesives such as phenol and urea-formaldehyde resin. Therefore, continuous research has been done to improve adhesive performance. This can be done via physical or modification methods, including the usage of cross-linking agents, structural modification, enzymatic modification, and the addition of additives. This review will cover these modification methods that give significant enhancement to the water-resistance and adhesive strength of soy protein-based adhesives.     

复合材料/金属胶接结构研究进展及发展趋势

胶接连接应用日渐广泛,特别是在汽车和航空航天等结构领域。首先分析了复合材料/金属胶接连接方式的特点,重点介绍了接头中的次弯曲效应、异质材料间刚度与热膨胀系数的不匹配特性以及载荷传递特性。然后总结了提高胶接接头强度的研究进展,主要包括增大胶接长度和宽度、选择胶黏剂、表面处理、增加胶瘤和被粘合物形状的设计等方面。最后对胶接接头的发展趋势进行了展望。     

一种有机硅改性的水乳型胶粘剂的制备

水乳型丙烯酸密封胶粘剂用于窗玻璃和小接缝的工业密封有二十年的历史,其优点是低毒,无味,无污染和耐候性优良。为改善密封胶的粘接强度和力学性能,文章采用了一种专用于水性体系的有机硅烷,讨论了传统硅烷与其在水乳型丙烯酸密封胶中的应用。结果表明,对比传统硅烷,这种水性硅烷可以在不改变产品稳定性的情况下显著提高密封胶的力学性能和粘接性能。