超耐水干酪素贴标胶的研制

介绍了一种以干酪素为主要原料的酪素商标胶的制备工艺及产品性能，讨论了分散剂、交联剂、淀粉用量、pH值等对酪素胶的制备和性能的影响。     

萃取法制备干酪素

干酪素是一种用途极为广泛的精细化工产品，用萃取法生产工业干酪素，其产品质量优于机械分离法，对生产特级品工业干酪素有一定推动作用。     

萃取法制备干酪素

干酪素是一种用途极为广泛的精细化工产品。用萃取法生产工业干酪素，其产品质量优于机械分离法，对生产特级品工业干酪素有一定推动作用。     

耐水金属箔标签胶的研制

介绍了以干酪素为主研制的耐水金属箔标签胶的制备方法及产品性能，讨论了影响标签胶性能的因素，并对啤酒贴标过程中存在的问题提出了相应的解决方法。     

奶渣生产干酪素的方法

介绍了奶渣生产干酪素的方法，阐明如何生产高质量干酪素。     

超耐水干酪素贴标胶的研制

介绍了一种以干酪素为主要原料研制的酪素商标胶的制备工艺及产品性能，讨论了分散剂、交联剂、淀粉用量、pH值对酪素胶的制备与性能的影响，制备的酪素胶具有好的黏贴性能和超耐水性，可替代进口产品。     

干酪素型啤酒标签胶的研究进展

从制备原理及分散体系、交联剂、改性助剂等方面综述了干酪素型啤酒标签胶的研究进展,并对该领域研究进行了展望。     

以水玻璃为硅源制备纳米孔超级绝热材料

采用廉价的水玻璃为硅源，通过溶胶凝胶法，用离子交换树脂除去钠离子，并进行溶刑替换，用三甲基氯硅烷进行表面修饰，采用常压干燥，制备出具有纳米多孔结构的SiO2超级绝热材料，并用扫描电镜、孔径分布测试仪等对其结构进行表征。     

耐高温聚异氰脲酸酯硬质泡沫塑料的制备

以聚醚多元醇、MDI、三聚催化刑DMP-30、发泡刑、均泡刑等原料，制备了聚氨基甲酸酯改性聚异氰脲酸酯(PU—PIR)硬质泡沫塑料。该硬质泡沫塑料可长期在150℃下使用，是相对于聚氨酯硬质泡塑料的一种耐高温硬质泡沫塑料。可广泛应用于工矿企业设备、管道及建筑业等的隔热保温。     

新型高速干酪素标签胶的研制

介绍了一种水基干酪素胶的制备方法 ,该胶适用于啤酒瓶签的高速粘接 ,具有粘接力强、干燥迅速 ,耐水性好、储存稳定性高等优点。     

环氧树脂胶黏剂在石墨粘接接头的热分解动力学

引言 与传统的铆接、螺栓连接工艺相比,粘接技术因具有操作灵活、简便、生产效率高、生产成本低等优点,而广泛用于化工、汽车、航空、航天等现代结构工程,在工程设计和制造领域的应用持续增长[1-3].     

新型耐高温PI胶粘剂用单体的合成及表征

为了提高聚酰亚胺(PI)胶粘剂的耐热性能,将碳硼烷引入PI分子链中,首次合成出一种新型含碳硼烷的PI单体,并采用红外光谱(FT-IR)法对其结构进行了表征。结果表明:含碳硼烷的PI单体在400～500℃升温过程中可交联固化;以此作为PI胶粘剂的基体,可赋予PI胶粘剂极佳的热稳定性能(500～1 300℃时热失重变化不大),从而为制备耐高温胶粘剂提供了新的途径和新的方法。     

卷烟搭口胶现状和发展

从卷烟搭口胶的安全性和在高速卷烟机上机适应性角度出发,对目前国内聚醋酸乙烯酯共聚物等高速卷烟塔口胶的合成研究发展状况,搭口胶内在的安全隐患,对卷烟吸食品质的影响,及卷烟企业对搭口胶的实际需求进行了讨论,提出安全性能和对吸食品质的影响是高速搭口胶新的功能性指标,必须采用新的技术手段和标准提高和规范高速搭口胶的生产和使用。     

聚酰亚胺薄膜粘接接头内胶黏剂热分解动力学的计算

利用X射线能谱(EDX)分析可以确定不同条件下粘接接头内胶黏剂的元素组成及其变化行为。由于胶黏剂和聚酰亚胺薄膜组成成分不同,可以利用X射线能谱计算出胶黏剂的热失重率,从而计算出聚酰亚胺薄膜粘接接头内胶黏剂的热分解动力学,并和空气环境下胶黏剂热分解活化能进行比较,表明粘接接头内胶黏剂的热分解速率低于空气环境下胶黏剂热分解速率。这种分析测试方法为原位表征粘接接头的性能提供了一种新的分析方法。     

Design of functionally graded joints using a polyurethane-based adhesive with varying amounts of acrylate

Adhesives with graded properties along the bondline are being developed to increase the strength of adhesively bonded joints. Efforts to do this in the past have resulted in mixed results. Two adhesive parameters need to be considered: the geometry of the gradation and the material properties of the adhesive at different gradation levels. In order to consider both of these aspects, a computational model was created to aid in not only the design of adhesive gradations but also judge whether a specific adhesive gradation method will be able to result in strength increases. In this study, the model was introduced and compared with published results. A new adhesive gradation system was created by using a polyurethane-based adhesive with varying amounts of acrylate, and a numerical analysis was performed to determine the potential advantages of the adhesive gradation.     

新型乳白胶的改性研究

介绍了新型多元共聚乳白胶改性的研制,经过改性的乳白胶具有良好的耐水性和较高的胶接强度。     

An adhesive joint strength evaluation method and its application in mechanical engineering

Traditional material joining techniques are facing enormous challenges due to the widely use of new materials in engineering. Therefore, the application of bonding technique in engineering becomes more and more important. In order to facilitate evaluation of the adhesive joint strength, a simple and efficient adhesive joint strength evaluation method which applies to engineering application was proposed in this paper. Tensile and shear stresses were selected as the main research objects in the method considering the complex working conditions that many adhesive structures may face in engineering. Butt joint, single-lap joint and several groups of scarf-joint specimens with different adhesive angles were fabricated. Numerous repetitive tensile tests were conducted to determine the adhesive failure stresses under different conditions. The adhesive failure stress envelope was fitted based on the experimental data and the evaluation method of adhesive joint strength was developed in detail. Finally, verification experiments were designed to determine the validity and reliability of the evaluation method.     

Strength of adhesive joints with adherend yielding: I. Analytical model

A sandwich element can be isolated in all two-dimensional adhesive joints, thereby simplifying the analysis of strain and stress. An adhesive sandwich model has been developed that accommodates arbitrary loading, a bilinear adherend stress-strain response, and any form of nonlinear adhesive behavior. The model accounts for both the bending deformation and the shear deformation of the adherends. Stress and strain distributions in the adhesive were obtained by solving a system of six differential equations using a finite-difference method. For a sample adhesive sandwich, the adhesive strains and stresses from the new model were compared with those of other models. Finally, the model was coupled with an analytical solution for the detached section of an adhesive joint in peel. The stress and strain distributions in the adhesive and the root curvature of the peel adherend were then compared with finite element results. An accompanying article in this issue uses the model with experimental peel data to investigate the suitability of various adhesive failure criteria.     

新型高强度单组分环氧树脂胶粘剂的研制

采用新工艺制备了一种新型高强度单组分环氧树脂胶粘剂。实验结果表明,新型环氧树脂体系具有良好的力学性能、疏水性及耐热性。     

STRENGTH OF ADHESIVE JOINTS WITH ADHEREND YIELDING: I. ANALYTICAL MODEL

A sandwich element can be isolated in all two-dimensional adhesive joints, thereby simplifying the analysis of strain and stress. An adhesive sandwich model has been developed that accommodates arbitrary loading, a bilinear adherend stress-strain response, and any form of nonlinear adhesive behavior. The model accounts for both the bending deformation and the shear deformation of the adherends. Stress and strain distributions in the adhesive were obtained by solving a system of six differential equations using a finite-difference method. For a sample adhesive sandwich, the adhesive strains and stresses from the new model were compared with those of other models. Finally, the model was coupled with an analytical solution for the detached section of an adhesive joint in peel. The stress and strain distributions in the adhesive and the root curvature of the peel adherend were then compared with finite element results. An accompanying article in this issue uses the model with experimental peel data to investigate the suitability of various adhesive failure criteria.