醇醛—脲醛复合氧化纤维素胶泥粘合剂的研制

本工艺通过复合、脲醛处理、氨处理等办法，使缩醛粘合剂转态，最大限度地限制了类似普通缩醛类粘合剂甲醛的释放，拓宽了两种缩醛粘合剂的用途。     

罗门哈斯水性粘合剂登陆中国

美国罗门哈斯公司生产的干式复合Robond L水性包装粘合剂已全部引人中国市场。新推出的双组分Robond L水性软包装粘合剂，属于丙烯酸系列产品，保持了单组分水性粘合剂的操作简易、快速固化、快速分切、剪切强度高等优点。同时，还具有水性粘合剂的环保、安全、不产生挥发性有机化合物、无芳香胺迁移问题等特点，并且拓展了水性粘合剂的应用领域。     

罗门哈斯水性粘合剂登陆中国

美国罗门哈斯公司生产的干式复合Robond L水性包装粘合剂已全部引入中国市场。新推出的双组分Robond L水性软包装粘合剂，属于丙烯酸系列产品，保持了单组分水性粘合剂的操作简易、快速固化、快速分切、剪切强度高等优点。同时，还具有水性粘合剂的环保、安全、不产生挥发性有机化合物、无芳香胺迁移问题等特点，并且拓展了水性粘合剂的应用领域。     

高速纸板流水线用粘合剂的制备和应用研究

本文对普通Stein－Hull淀粉粘合剂进行政性研究，通过研究各组份对粘合剂粘度及其稳定性、糊化温度、粘接强度等影响，以及流水线车速、纸张种类等对粘接质量的影响，制备高速纸板流水线用粘合剂，并不受纸张克重的制约，同时对粘合剂生产原理和粘接机理进行了探讨．     

酶水解法淀粉粘合剂的制备

酶水解法淀粉粘合剂的制备在瓦楞纸包装行业中，淀粉粘合剂的研制与使用日趋广泛。目前淀粉粘合剂的研制取得了很好的进展。氧化型、改进型淀粉粘合剂主要存在制作工艺长，存放期短等不足。我们在多年研制的基础上，摸索出一套酶水解法淀粉粘合剂的制作工艺，具有制作简单...     

水乳型地毯粘合剂的研制

采用功能性单体，通过乳液共聚，合成了水乳型地毯粘合剂，介绍了该粘合剂的制备方法等。     

用于特种印花的特殊粘合剂

介绍用于特种印花的高粘度混合型粘合剂。述评了金光粘合剂、珠光粘合和银光粘合剂、夜光粘合剂和反光粘合剂、发泡粘合剂和起绒粘合剂、固体物质的转移印花粘合剂、透明粘合剂与消光粘合剂等特殊粘合剂,以及它们加工的适应性。     

水溶性物质对网印粘合剂成膜速度的影响

为了改变网印粘合剂的结膜速度和改善粘合剂的堵网性能，在聚合时加入了水溶性的高分子物和单体，如聚甲基丙烯酸钠、丙烯酸等．实验中发现离子型的聚合物和单体对于抑制网印粘合剂结膜效果明显，可以改善粘合剂的堵网性能，使用丙烯酸的效果优于聚甲基丙烯酸钠的效果．     

糊化淀粉粘合剂新型配方的研究

本文确定了糊化淀粉粘合剂的新配方，使其与同类粘合剂相比具有粘接力强、保管期长、制胶成本低，时间短，设备要求简单等特点。     

高强度结构胶的制备及应用工艺

介绍了ＣＬ－２５、ＣＬ－２６等结构型粘合剂的制备与应用工艺，这几种粘合剂具有强度高、工艺性能好等优点。     

增稠在丙烯酸酯乳液胶黏剂分子设计中的作用

在制备乳液胶黏剂时经常要将乳液增稠。本文从减小乳液胶黏剂的表面张力、提高乳液胶黏剂的稳定性、为不使胶黏剂渗入被粘材料、为使胶黏剂涂复的厚度达到一定的要求等四个方面分析了增稠在乳液胶黏剂分子设计中的作用,并对乳液胶黏剂的增稠方法,内增稠和外增稠作了详细的介绍。     

新型镀铝复合薄膜专用胶粘剂的研究

分析了影响BOPP／VMCPP型镀铝复合薄膜剥离强度的主要因素,即：BOPP和胶粘剂的界面强度;胶粘剂和VM的界面强度;VM和CPP的界面强度,以及胶粘剂的组成、分子结构、相对分子质量分布、单体残存量等,并合成了一种新型的镀铝膜和塑料薄膜复合用聚氨酯胶粘剂;讨论了胶粘剂的相对分子质量、相对分子质量分布、固化温度和时间等因素对粘结性能的影响。试验结果表明：该胶粘剂初粘力强、剥离强度高、溶剂残留量低,适用于快速复合薄膜生产线。     

The Effect of Adhesive Thickness on the Mechanical Behavior of a Structural Polyurethane Adhesive

One parameter that influences the adhesively bonded joints performance is the adhesive layer thickness. Hence, its effect has to be investigated experimentally and should be taken into consideration in the design of adhesive joints. Most of the results from literature are for typical structural epoxy adhesives which are generally formulated to perform in thin sections. However, polyurethane adhesives are designed to perform in thicker sections and might have a different behavior as a function of adhesive thickness. In this study, the effect of adhesive thickness on the mechanical behavior of a structural polyurethane adhesive was investigated. The mode I fracture toughness of the adhesive was measured using double-cantilever beam (DCB) tests with various thicknesses of the adhesive layer ranging from 0.2 to 2 mm. In addition, single lap joints (SLJs) were fabricated and tested to assess the influence of adhesive thickness on the lap-shear strength of the adhesive. An increasing fracture toughness with increasing adhesive thickness was found. The lap-shear strength decreases as the adhesive layer gets thicker, but in contrast to joints with brittle adhesives the decrease trend was less pronounced.     

导电胶性能的影响因素与表征

导电胶有着铅锡焊条没有的好处,所以它作为传统的锡铅焊料的替代品,已经得到了人们越来越多的关注。对于导电胶的组成和功能进行了阐述,介绍了导电胶发展的国内外的现状,说明我国在导电胶方面还有很多工作要做。重点介绍了影响导电胶性能的因素有水分、高温、电化学腐蚀和外力冲击等,并且提出了一定的解决方案。也介绍了五种常见的测试和表征导电胶性能的方法。提出了导电胶未来发展的几个方向,对导电胶的前景进行了展望。     

聚氨酯—环氧树脂胶粘剂的研制

研制出一种无溶剂的双组份聚氨酯 -环氧树脂胶粘剂。结果表明 ;它有较高的粘接强度和伸长率 ,达到半结构胶的要求 ,有较高的耐水和耐温性 ,当一定量聚氨酯预聚体含量时 ,胶粘剂的粘接强度出现最佳值。     

On the intralaminar and interlaminar stress analysis of adhesive joints in plated beams

An improved bimaterial adhesive joint model is proposed for the intralaminar and interlaminar stress analysis of adhesively-bonded interfaces in plated beams with thin or moderately thick adhesive layer. To overcome the limitations or unreasonable assumptions in the existing theoretical joint models, both the shear and normal stresses along two adherend–adhesive interfaces are assumed to be different in the present model, and the adhesive layer is modeled as a simplified 2-D elastic continuum. Deformable interfaces are assembled to establish the continuity conditions between the adherend–adhesive interfaces, and the local deformations near the end of the adhesive layer are fully captured. The longitudinal and transverse displacements of the adhesive layer are introduced as two new independent parameters, and the missing “degrees of freedom” in the conventional elastic foundation models are retrieved. Differential governing equation of an adhesively-bonded bi-layer beam is established, and explicit closed-form expressions of beam forces and interface stresses are derived. Comparisons of the present solution with the existing elastic foundation models as well as the full 2-D continuum elastic solutions by the finite element analysis are conducted to validate the presented model. Parametric studies are then conducted to reveal the roles of the adhesive thickness and local interface deformations on the stress distributions both along the adherend–adhesive interfaces (interlaminar) and through the adhesive layer thickness (intralaminar), from which a feasible measure to reduce the strain or stress concentrations is obtained. The present improved adhesive joint model in plated beams sheds light on the effect of adhesive layer thickness in bimaterial bonding assembly and provides a better understanding of potential interface debonding initiation and its propagation path.     

改性淀粉胶黏剂的研究概况及展望

淀粉以其绿色环保的优点在胶黏剂领域中的应用占有举足轻重的地位,但是单一的淀粉胶黏剂有很多不足之处。满足不了各个领域的多方面需求,因此在一定条件下经过物理、化学或者生物方法对其进行有限度的改性,研制出了各种具有优良性能的改性淀粉胶黏剂并且在各个领域中都有很好的推广应用。根据淀粉胶黏剂在改性方面的研究和开发概况,综合介绍了几种改性淀粉胶黏剂的产物性能及其在包装行业中的推广应用情况,最后指出了淀粉胶黏剂改性的优势及未来发展的方向。     

An improved four-parameter model on stress analysis of adhesive layer in plated beam

The prediction of stresses in an adhesive layer is helpful in revealing the mechanism of debonding failure in plated beams. This study proposes an improved analytical model for the stress analysis of an adhesive layer in a plated beam. The beam and the soffit plate are individually modelled as a single Timoshenko sub-beam with separate rotations, while the adhesive layer is modelled as a two-dimensional elastic continuum in plane stress, which considers different adherend-adhesive interface stresses. The internal forces of the adhesive layer are assumed to satisfy the Timoshenko beam theory, and the shear deformation and bending moment of the adhesive layer can be considered. The internal forces and displacements of the adhesive layer are fully considered in the displacement compatibility equations, and deformable interfaces are assembled so that the effect of interface stresses on local deformation is captured. Based on equilibrium equations and displacement continuity, the governing differential equations of beam forces are derived, and then the analytical solutions of interface stresses and stresses along the thickness of the adhesive layer are obtained. Comparisons of the results of the finite-element analysis and the existing four-parameter model solutions show that the present model is reasonable. The influence of adhesive thickness on stress distributions in adhesive layers is also investigated.     

An efficient analysis model for functionally graded adhesive single lap joints

Employing a functionally graded adhesive the efficiency of adhesively bonded lap joints can be improved significantly. However, up to now, analysis approaches for planar functionally graded adhesive joints are still not addressed well. With this work, an efficient model for the stress analysis of functionally graded adhesive single lap joints which considers peel as well as shear stresses in the adhesive is proposed. Two differential equations of the displacements are derived for the case of an axially loaded adhesive single lap joint. The differential equations are solved using a power series approach. The model incorporates the nonlinear geometric characteristics of a single lap joint under tensile loading and allows for the analysis of various adhesive Young׳s modulus variations. The obtained stress distributions are compared to results of detailed Finite Element analyses and show a good agreement for several single lap joint configurations. In addition, different adhesive Young׳s modulus distributions and their impact on the peel and shear stresses as well as the influence of the adhesive thickness are studied and discussed in detail.     

SBS／MMA／BA／MAA四元接枝共聚及其产物粘接性能

研究了SBS与甲基丙烯酸（MAA）和甲基丙烯酸甲酯（MMA）,丙烯酸丁酯（BA）的四元接枝共聚,探讨了MMA／BA质量比,MMA与BPO用量,反应时间,反应温度及固化时间对粘接性能的影响,并将该四元接枝胶的性能与三元胶和SBS／MMA／BA／AA四元胶进行了比较,结果发现：该四元胶对聚烯烃的粘接强度及室温固化性能优于SBS／MMA／BA三元胶,尤其与异氰酸酯配合使用时,其效果更佳,而且该四元胶的粘接强度,耐水及耐热性能均优于SBS／MMA／BA／AA四元胶。