橡胶材料的粘接方法与粘接结构

该专利提供了一种无需抛光加工，且比抛光加工具有更好粘接可靠性的橡胶材料的粘接方法与粘接结构。     

湿面粘接理论

本文叙述了粘接面上水的状态，水影响胶接强度的机理和湿面粘接理论．介绍了按照湿面粘接理论设计的环氧树脂胶粘剂和甲基丙烯酸酯类胶粘剂对混凝有水表面的胶接强度分别提高31％和1．6－2．2倍．     

聚四氟乙烯的表面活化与粘接

叙述了钠－萘溶液活化聚四氟乙烯表面的方法和粘接工艺，并测试了粘接件的主要性能。     

有机硅粘接密封剂

Silicone Solutions公司的SS－67B是一种韧性高、拉伸强度大、固化速度快的单组分RTV有机硅粘接密封剂产品，可用于有机硅假体、垫片和O型圈的生产和修复中。通过使用热空气流，SS－67B几乎可以达到立即固化，可对硅橡胶注射件和挤出件提供优异的粘接性能。 Rubber World,2001,223(5):64     

聚烯烃与金属粘接用CR/CPE-g-MAH胶粘剂的粘接性能的研究(英文)

采用氯丁橡胶（ＣＲ）和ＭｇＯ与氯化聚乙烯接枝马来酸酐（ＣＰＥ－ｇ－ＭＡＨ）共混,制得聚丙烯（ＰＰ）与金属粘接用胶粘剂,室温固化就能获得较高强度。探讨了ＣＲ和ＭｇＯ含量对胶粘剂粘接强度的影响,并考察了这种胶粘剂的耐水性。研究表明,加入ＣＲ和填料有助于提高粘接强度,当ＣＲ／ＣＰＥ－ｇ－ＭＡＨ的质量比为１∶１,且ＭｇＯ含量为３５％时,粘接强度最大,并具有优良的耐水性。     

板式叠层筛网粘接技术的改进

钻井液振动筛是油田钻井固控系统中的关键设备，而筛网又是振动筛的主要结构部分，提高筛网的使用寿命是提高钻井速度、降低钻井成本的重要途径，为了提高筛网粘接质量，便于实现自动化操作，本文通过对板式叠层筛网的粘接前处理，胶粘剂调配与涂敷，加压固化，增加涂敷点等方面的工艺改进，使得粘接的叠层筛网使用寿命提高了3－5倍。     

750公斤空气锤齿轮轴粘接

本文通过750公斤空气锤齿轮轴的粘接,介绍了一般结构粘接的设计实施过程。为粘接产品和用粘接方法修旧利废提供了一套切实可行的设计思路和计算可靠性的方法。     

氧化铜—磷酸盐胶粘剂粘接机理的剖析与探讨

剖析了氧化铜－磷酸盐胶粘剂的粘接机理，提出该交调和固化后，主要生成含有Ｏ－Ｃｕ－Ｏ侧链，并通过－Ｏ－Ｃｕ－Ｏ链桥纵向和横向键合的无机磷酸盐高分子聚合物，是形成高强度粘接内聚力的主要因素。     

小钻头的粘接

1983年7月,由于生产需要我们用无机胶粘剂粘接了几批加长小钻头。其中有φ0.9mm、、φ1.4mm、φ1.6mm、φ2mm等钻头。几年的使用结果证明粘接效果很好,未发生松动现象。粘接工艺如下: 1、粘接结构;套接结构(见结构图)     

无机粘接“定位粘接法”简介

概况我们研制的这种粘接剂,是以特制氧化铜粉及经特殊处理的磷酸铝溶液为基料的无机粘接剂。使用时,按每毫升(C.C.)液体加入4—4.5克粉在铜板上调成稀糊状,即可进行粘接,粘后加热固化即可获得一定的粘接强度。这种粘接方法,具有简单、方便、经济等优点;选用一定的粘接结构及粗糙的粘接表面,可获得较高的粘接强度,并能承受较高和较低的温度。这种无机粘接,老化影响小,固化过程中不收缩,固化后变形影响甚微,有着较为广阔的使用范围。近几年来,在各级领导的关怀重视下,     

高初粘力EPDM/金属界面胶粘剂的研究

在三元乙丙橡胶胶粘剂AE-2基础上,探索了提高EPDM/金属界面胶粘剂初粘力的途径,考察了增粘树脂HX,HY-209,GMA,TX和R11等对胶粘剂初粘力的影响,重点研究了增粘树脂HX用量对EPDM/金属界面粘接性能的影响,确定了高初粘力EPDM/金属界面胶粘剂AE-9配方组成。结果表明,加入增粘树脂HX后EPDM/金属界面胶粘剂初粘力效果最好。胶粘剂AE-9粘接性能优异,剥离强度达到4.0 MPa以上,粘接试样经80℃×180 d热空气老化试验后粘接强度没有降低,老化性能优异。     

磁控溅射镀膜附着力的测试研究

采用铝柱对粘法，通过测试对粘铝柱的粘接强度而得出磁控溅射镀层在聚氨酯涂层上附着力的大小。研究结果表明：胶粘剂品种选取是能否测出镀层附着力最重要的因素，胶层的厚度对镀层附着力测试结果有较大影响，胶层的厚度小与过大都使附着力的测试值偏低。     

Evaluation of the Constrained Blister Test for Measuring Adhesion

The constrained blister test (CBT) was evaluated as a method for measuring adhesion using a model system, electrical tape bonded to polystyrene. Pressure is applied through a circular inlet hole in the substrate, causing the adhesive to “blister” up and peel radially away from the substrate. A glass constraint, placed some distance above the adhesive, limits deformation of the adhesive in the vertical direction and promotes radial peel. By operating at low spacer height (the distance of the constraint above the adhesive) and very low growth rates, the energy spent for deformation of the adhesive and viscoelastic dissipation is minimized. Blister radial growth was linear with time, and growth rate increased linearly with the second power of the energy input. An intrinsic, rate-independent adhesion energy was obtained by extrapolation to zero crack growth rate. The CBT was compared with two peel tests. The dependence of the growth rate on energy input was different, but the extrapolation to zero growth rate gave the same value of the intrinsic adhesion energy.     

蓖麻油型聚氨酯胶粘剂粘合性能的研究

探讨了预聚体合成时二元醇质量分数及胶粘剂配制时—ＮＣＯ／—ＯＨ摩尔比和催化剂（有机锡类）质量分数对蓖麻油型聚氨酯胶粘剂粘合性能的影响。结果表明,预聚体合成时二元醇质量分数为０７０及胶粘剂配制时—ＮＣＯ／—ＯＨ摩尔比为１３时,催化剂质量分数为０００６～０００８和—ＮＣＯ／—ＯＨ摩尔比为１４时,催化剂质量分数为０００４～０００６,胶粘剂的粘合性能最佳;胶粘剂配制时—ＮＣＯ／—ＯＨ摩尔比增大,胶粘剂的粘合性能提高;蓖麻油型聚氨酯胶粘剂的耐水性较好     

CFRP界面胶接性能的研究

本文主要对碳纤维增强树脂基复合材料与金属铝的界面胶接问题进行了研究。对胶粘剂中的环氧树脂、增韧剂及胶接工艺方法进行了一系列的对比试验，从而选择出适用于实际工艺生产的胶粘剂。     

增强聚烯烃聚氨酯胶粘剂性能研究

以端羟基聚丁二烯（HTPB），甲苯二异氰酸酯（TDI）以及有关配合剂为原料，制备了聚烯烃聚氨酯胶粘剂，研究了蓖麻油，三羟甲基丙烷，丙三醇对胶粘性能的影响。测试了胶粘剂的本体强度，粘接强度以及工艺性能。结果表明，以蓖麻油作为胶粘剂的增强剂，与HTPB的羟基（－OH）含量摩尔比为0．25，可以获得力学性能，粘接性能和工艺性能都比较优越的聚烯烃聚氨酯胶粘剂。     

铝合金与硅橡胶的粘接

进行铝合金表面处理工艺、胶粘剂粘接与硫化工艺对粘接强度影响的研究,结果表明采用化学氧化处理方法,可以使铝合金与硅橡胶的粘接强度稳定在３．０ＭＰａ以上。     

Adhesion failure propagation in adhesively-bonded single-lap laminated FRP composite joints

This paper deals with three-dimensional non-linear finite element analyses to study the behaviour of embedded adhesion failure propagation in adhesively-bonded single-lap laminated FRP composite joints clamped at one end and subjected to uniform extension at the other end. Because of loading eccentricity and joint material heterogeneity, the embedded adhesion failure is likely to initiate from the stress singularity points and will propagate from either end of the adhesive layer along the adherend–adhesive interfaces. The effects of interaction of such failures and their propagations along the interfaces of the adherends and adhesive are the main concerns of this paper. The peel and shear stresses have been computed along the mid-surface of the adhesive layer for varying adhesion failure lengths to find out the influence of adhesion failure length on the strength of the joint being analyzed. The concept of fracture mechanics has been used to calculate the strain energy release rate (SERR) as the adhesion failure propagates using the virtual crack closure technique (VCCT). It is seen that mode-II SERR is predominant in the propagation of such adhesion failures. The SERR values computed with respect to the adhesion failure lengths being propagated from the two ends of the adhesive layer are seen to be different.     

Analysis of the Notched Coating Adhesion Test

An analysis of the notched coating adhesion (NCA) test is presented. This simple adhesion test method is appropriate for measuring the interfacial fracture toughness of some classes of coatings and open-faced adhesive bonds. The NCA specimen consists of a single substrate coated with a thin layer of adhesive. The coating is notched to sever the coating and induce sharp interfacial debonds, and the specimen is then loaded in tension. The substrate strain at which coating debonding occurs is recorded and used to determine the critical strain energy release rate. Yielding of the substrate is permitted, and does not significantly affect the calculation of the strain energy release rate. Analytical and finite element analysis are used to quantify the available strain energy release rate for both steady state and laterally-constrained cases. The available strain energy release rate is shown to be quite insensitive to the initial debond length. The specimen geometry results in a mode mix which causes the adhesive to debond along the interface.     

Adhesion between oppositely charged polyelectrolytes in salt solution

The adhesion at the aqueous interface between a polyacid hydrogel and a grafted polycation layer (brush) is shown to be reversible on the addition of sodium chloride, which screens the charges on the gel and brush. Furthermore, it is shown that a double-network (DN) hydrogel both exhibits adhesive failure and stronger adhesion with the brush than a simple poly(methacrylic acid) (PMAA) hydrogel, which undergoes cohesive failure on detachment. The adhesive force at the hydrogel–brush interface significantly increases after adding dilute salt solution (of 0.001 M). Once the concentration of salt solution is raised above 0.05 M, both the adhesive force and work done in detaching both single-network and DN hydrogels from the brush surface are notably reduced. This result confirms that reversible adhesion between a hydrogel and polymer brush in salt solutions is possible, although a DN gel is required for adhesive failure.