氟橡胶与黑色金属的热硫化粘合试验

试验研究了氟橡胶与黑色金属的热硫化粘合。考察了ＣＨＥＭＬＯＫ ＣＨ６０７等５种粘合剂的粘合效果。试验结果表明，香港适树公司的５１２粘合剂与氟橡胶的粘合性能优良，并且具有防锈能力。     

橡胶与金属镀膜的硫化粘合

研究了添加丙烯酸锌的ＥＰＤＭ胶料与锡、锌、镍 磷、镍 硼、钯和钯 磷等金属镀膜的硫化粘合。在金属镀膜为锡、锌、镍 磷和镍 硼的情况下 ,添加丙烯酸锌的ＥＰＤＭ直接硫化到金属表面上 ,不用任何粘合剂便可获得牢固的橡胶与金属的粘合。进行了剥离粘合试验以测定浸入热水前后橡胶与金属的粘合强度 ,结果表明 ,得到了较高的剥离粘合强度和优异的耐热水性能。使用Ｘ射线光电光谱 (ＸＰＳ)分析了金属表面 ,认为金属氧化状态影响了橡胶与金属的粘合强度橡胶与金属镀膜的硫化粘合@涂学忠     

新型橡胶-金属硫化粘合剂的研制

由对亚硝基苯酚封闭的多次甲基多苯基多异氰酸酯（ＰＡＰＩ）和氨基丙基三乙氧基硅烷（ＫＨ５５０）加成物对ＮＲ有很高的热硫化交联活性,它与氯磺化聚乙烯（ＣＳＭ）、氯化橡胶和环氧树脂等配制而成的粘合剂是优异的ＮＲ金属硫化粘合剂,其粘合强度大于橡胶本体的强度。     

橡胶与金属的粘合技术

通常，丙烯酸和甲基丙烯酸的金属盐与过氧化物并用，以便提高饱和和不饱和橡胶的硫化程度。此外还发现，它们可增加橡胶与未经处理的金属和合成纤维同的粘合。由于这个原因。与采用传统粘合剂相比，采用上述粘合剂可大幅度提高粘合强度和减少加工时同。它们还可作为活性助剂与胶料混合，在硫化中起粘合增进剂作用。     

防腐衬里用硬质胶与钢基体粘合的研究

以一种在120℃以下，粘合强度可达8．0MPa的耐高温硬质橡胶粘合剂为例，探讨了硬质胶种类、硫化时间等因素对防腐衬里硬质橡胶与钢基体间粘合的影响。     

橡胶文摘

橡胶文摘袁抗译氟橡胶和金属硫化粘合用的水释粘合剂该粘合剂的组成中有：含氨基的三价羟基硅烷、不饱和的羧酸以及饱和度较低的羧酸或无机酸。例如，用ｒ－氨基丙基三价羟基硅烷（４０％溶液）２．５％、丙基丙烯酸０．２％和ＡｃＯＨ０．１％组成水溶液，涂刷在一块经磷...     

化学镀镍金属骨架与橡胶直接硫化粘合技术

介绍化学镀镍金属骨架与橡胶直接硫化粘合技术。在胶料中添加粘合剂三聚硫氰酸衍生物,可实现化学镀镍金属与橡胶的直接硫化粘合。化学镀镍金属与天然橡胶(NR)轮胎钢丝帘线覆胶胶料、NR建筑减震支座胶料、NR桥梁减震支座胶料和丁腈橡胶(NBR)油封胶料的直接硫化粘合强度较高,其技术可在化学镀镍金属骨架橡胶制品生产中实际应用。     

不同粘合体系对橡胶与镀锌钢丝绳粘合性能的影响研究

研究钴盐粘合体系、树脂类粘合体系和钴盐与树脂并用粘合体系对阻燃钢丝绳芯输送带粘合胶粘合性能的影响。结果表明:3种粘合体系对橡胶与镀锌钢丝绳的粘合均有增进作用,硼酰化钴的增进效果比粘合剂RE/A显著,硼酰化钴和粘合剂RE/A并用体系粘合胶的粘合性能最佳;硼酰化钴分别与粘合剂RK/A或粘合剂PER或粘合剂AS-88组成粘合体系时,粘合胶粘合性能优于硼酰化钴与粘合剂RE/A体系粘合胶,且胶料加工安全性好,硫化胶物理性能优异。     

粘合体系对橡胶-镀锌钢丝绳粘合性能的影响研究

研究钴盐粘合体系、树脂类粘合体系和钴盐与树脂并用粘合体系对阻燃钢丝绳芯输送带粘合胶粘合性能的影响。结果表明:3种粘合体系对橡胶与镀锌钢丝绳的粘合均有增进作用,硼酰化钴的增进效果比粘合剂RE/A显著,硼酰化钴和粘合剂RE/A并用体系粘合胶的粘合性能最佳;硼酰化钴分别与粘合剂RK/A或粘合剂PER或粘合剂AS-88组成粘合体系时,粘合胶粘合性能优于硼酰化钴与粘合剂RE/A体系粘合胶,且胶料加工安全性好,硫化胶物理性能优异。     

橡胶与金属骨架材料粘合强度的影响因素

从金属骨架表面处理、粘合工艺、胶料配方和硫化工艺等方面阐述影响橡胶与金属粘合强度的因素。金属骨架表面处理的重点是根据金属骨架材料的种类和污物的类别选择适合的处理方式、清洗剂和介质;粘合工艺的要点是粘合剂的选择、涂刷厚度和隔绝污染;胶料配方中的极性橡胶和白炭黑有利于粘合,软化剂和增塑剂用量大不利于粘合;硫化工艺方面,适当增大硫化压力、140~150℃温度区间达到正硫化状态有利于提高粘合强度;避免在粘合部位设置模具分型面、注胶口靠近涂胶面和装模时间过长等。     

金属与橡胶粘接用双组份胶液的研制

研制了一种酚醛-丁腈橡胶型双组份胶液,主要应用于橡胶与金属之间、橡胶与橡胶之间及橡胶与其他非金属材料之间的胶接。该胶既可以冷粘、又可以热硫化粘接;且粘接强度较高、耐介质、耐老化等综合性能优良。     

Reactive bonding of natural rubber to metal by a nitrile–phenolic adhesive

The mechanism of adhesive bonding of rubber to metal using an interlayer of bonding agent (adhesive) is discussed with respect to various physical and chemical events such as adsorption at the metal surface, chemical crosslinking within the adhesive, interdiffusion, and formation of interpenetrating networks at the rubber–adhesive interface. An investigation on the peel strength of a natural rubber (NR)–adhesive–metal joint, made by vulcanization bonding using nitrile–phenolic adhesive containing various concentrations of toluene diisocyanate–nitrosophenol (TDI–NOP) adduct, is presented. A single‐coat adhesive, consisting of a p‐cresol phenol formaldehyde resin, nitrile rubber (NBR), and vulcanizing agents in methyl ethyl ketone solvent, was selected for the study. Considerable improvement in the peel strength was obtained by the incorporation of TDI–NOP adduct into the nitrile–phenolic adhesive. The peel strength increases as the concentration of TDI–NOP adduct in the adhesive composition increases, then levels off with a transition from interfacial failure to cohesive tearing of rubber. The peel strength improvement is believed to be attributed to the interfacial reactions between the bonding agent and natural rubber, when TDI–NOP adduct is incorporated. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 2597–2608, 2001     

Study of the nature of interaction of EPDM-40 rubber with an epoxy adhesive

—The mechanism of improving the adhesion of ethylene-propylene rubber to an epoxy adhesive has been studied. The basic factor that improves the rubber adhesion is the formation of chemical bonds between polymer networks of the substrate and the adhesive by reaction of epoxy groups of the adhesive with oxygen-containing groups of the oxidized surface layer of rubber.     

三元乙丙橡胶胶粘剂的研制

介绍了一种EPDM混炼胶与CSM混炼胶共混改性后配制成的一液型胶粘剂,在EPDM-钢、EPDM-NBR、EPDM生胶-EPDM熟胶、EPDM-复合材料等界面粘结中应用,取得了良好的效果,界面粘结强度可以达到3MPa以上,界面贮存性能、工艺性能良好。在大型压力容器内衬材料成型工程中已得到成功应用。     

阻燃型电子元件胶粘剂的难燃性能测试方法

以国标“压敏胶粘带耐燃性试验方法-悬挂法”和国标“电工电子产品着火危险试验-针焰试验方法”为基础,提出了把带状胶粘剂样品看作是一个等同的电子电工零部件、元件,从而可以将GB5169．5-85电工电子产品着火危险-针焰试验方法用于评价阻燃型电子元件胶粘剂的难燃性能。实际结果证明,如果胶粘剂的难燃性能可以通过该标准的要求,则当它被用来粘接电子电工零部件、元件时,不会降低产品的整体难燃等级。结论：这是一种符合实际使用需要的,阻燃型电子元件胶粘剂的难燃性能测试和评价方法。     

胶鞋胶面附着力强度的研究

胶面鞋附着力的波动，会直接影响到其内部质量，物理性能是否达到国际标准。而这一标准直接体现在胶面鞋与鞋里布之间的粘着力。通过改变配方及加工工艺，使胶面鞋附着力达到国际标准。     

Failure behavior of adhesively bonded joints with a rubber modified epoxy adhesive under tensile-shear combined cyclic loading

Rubber-modified epoxy adhesives are used widely as structural adhesive owing to their properties of high fracture toughness. In many cases, these adhesively bonded joints are exposed to cyclic loading. Generally, the rubber modification decreases the static and fatigue strength of bulk adhesive without flaw. Hence, it is necessary to investigate the effect of rubber-modification on the fatigue strength of adhesively bonded joints, where industrial adhesively bonded joints usually have combined stress condition of normal and shear stresses in the adhesive layer. Therefore, it is necessary to investigate the effect of rubber-modification on the fatigue strength under combined cyclic stress conditions. Adhesively bonded butt and scarf joints provide considerably uniform normal and shear stresses in the adhesive layer except in the vicinity of the free end, where normal to shear stress ratio of these joints can cover the stress combination ratio in the adhesive layers of most adhesively bonded joints in industrial applications.

In this study, to investigate the effect of rubber modification on fatigue strength with various combined stress conditions in the adhesive layers, fatigue tests were conducted for adhesively bonded butt and scarf joints bonded with rubber modified and unmodified epoxy adhesives, wherein damage evolution in the adhesive layer was evaluated by monitoring strain the adhesive layer and the stress triaxiality parameter was used for evaluating combined stress conditions in the adhesive layer. The main experimental results are as follows: S–N characteristics of these joints showed that the maximum principal stress at the endurance limit indicated nearly constant values independent of combined stress conditions, furthermore the maximum principal stress at the endurance limit for the unmodified adhesive were nearly equal to that for the rubber modified adhesive. From the damage evolution behavior, it was observed that the initiation of the damage evolution shifted to early stage of the fatigue life with decreasing stress triaxiality in the adhesive layer, and the rubber modification accelerated the damage evolution under low stress triaxiality conditions in the adhesive layer.     

Reusable Dry Adhesive: Aluminium-Aluminium Bonding by Self-Vulcanisable Blend Based on Carboxylated Nitrile Rubber and Chlorobutyl Rubber

A self-vulcanisable blend of chlorobutyl rubber and carboxylated nitrile rubber can be used as an adhesive for aluminium-aluminium bonding. The peel strength depends on the state of cure of the adhesive, testing temperature and carboxyl content of the carboxylated nitrile rubber. At moulding times below 15 minutes, the adhesive was found to be reusable after repeated post-peel mouldings.     

Reusable Dry Adhesive: Aluminium-Aluminium Bonding by Self-Vulcanisable Blend Based on Carboxylated Nitrile Rubber and Chlorobutyl Rubber

A self-vulcanisable blend of chlorobutyl rubber and carboxylated nitrile rubber can be used as an adhesive for aluminium-aluminium bonding. The peel strength depends on the state of cure of the adhesive, testing temperature and carboxyl content of the carboxylated nitrile rubber. At moulding times below 15 minutes, the adhesive was found to be reusable after repeated post-peel mouldings.     

白炭黑原位填充的改性室温硫化硅橡胶胶黏剂

采用原位填充白炭黑与甲基丙烯酸(酯)改性相结合的方法制备了室温硫化(RTV)硅橡胶胶黏剂,用红外光谱与凝胶渗透色谱表征了RTV硅橡胶的结构及其胶黏剂的相对分子质量,用扫描电子显微镜分析了白炭黑的分散性,并考察了胶黏剂对金属铝黏接性能的影响因素。结果表明,RTV硅橡胶、甲基丙烯酸(酯)与白炭黑形成了共聚物;随着白炭黑含量的增加,胶黏剂的相对分子质量分布变宽;当偶联剂γ-氨丙基三乙氧基硅烷/正钛酸四丁酯(质量比3)质量分数为1.5%,白炭黑质量分数为1.5%,交联剂原硅酸四乙酯及催化剂二月桂酸二丁基锡的质量分数分别为1.0%,0.1%时,胶黏剂粘接铝的最大剪切强度可达到5.64MPa。