新型聚酰亚胺-环氧胶粘剂的制备及性能研究

在环氧树脂ES216中加入不同含量的新型聚酰亚胺粉末,制得胶粘剂。通过热失重分析、接触角、拉伸强度及凝胶化时间测试研究了聚酰亚胺用量对环氧胶性能的影响。结果表明,随着聚酰亚胺用量增加,环氧胶的耐热性、疏水性提高,拉伸剪切强度下降,表观活化能提高。聚酰亚胺的质量分数为15%时,胶粘剂的起始热分解温度378.4℃,表面能39.0 mJ/m2;拉伸剪切强度20.9 MPa;表观活化能58.5 kJ/mol,综合性能优良,增韧效果最好。     

改性环氧丙烯酸酯胶粘剂的合成与性能

本文研究了环氧丙烯酸酯的改性，采用双马来酰亚胺、环氧树脂、丙烯酸酯、改性剂为主要原料合成了改性环氧丙烯酸酯胶粘剂．运用IR、DSC等分析测试手段研究了该胶粘剂的固化行为。运用TGA、DTA等分析手段研究了该胶粘剂固化后的热稳定性．同时，用改性环氧丙烯酸酯胶粘剂制得了聚酰亚胺薄膜挠性印刷电路基板并测试了有关性能．     

环氧树脂胶粘剂的耐热改性研究进展

介绍和评述了环氧树脂胶粘剂耐热和增韧改性的若干体系,如高官能度环氧、环氧-酚醛、环氧-丁腈、环氧-芳胺、环氧-芳胺-双亚胺、环氧-链烯基酚-双亚胺、环氧-双羟、羧亚胺、环氧-聚酰亚胺和环氧-氰酸酯等的研究和应用情况。     

用DSC测定环氧胶粘剂的固化反应特性

前言环氧胶粘剂是主要的胶粘剂之一。而环氧胶粘剂的最终产品的性能除了与其配方组成有关外,也与其加工工艺条件有很大关系,往往稍加变动其配方组成或加工条件,就会引起产品性能的很大改变。因此有必要对环氧胶粘剂的配方和加工条件进行抽样分析和质量控制。     

胶接技术开发动向

综述乳液、热熔、压敏、环氧、丙烯、酸系、聚酰亚胺、UV固化和可见光固化、功能性胶等各类胶粘剂的最新成就以及新聚合材料的合成、表面处理、废料回收利用等方面的技术发展现状,由此反映当前胶粘剂领域的开发指向。     

高性能聚酰亚胺胶粘剂的研究进展

聚酰亚胺凭借其优良的耐高温特性，在高科技领域中具有重要应用前景。本文综述了近年来高性能聚酰亚胺胶粘剂的研究以及应用进展。从聚酰亚胺胶粘剂的分类及改性的研究现状进行分析，重点描述了在聚酰亚胺中引入大体积基团、聚硅氧烷、活性端基等方法进行的结构改性，阐述了将聚酰亚胺与碳纤维和纳米无机颗粒组合的组分改性研究进展，并对高性能聚酰亚胺胶粘剂的发展前景作了展望。     

提高环氧胶粘剂耐热性的研究进展

介绍了耐热环氧胶粘剂的主要性能特点,论述了近年来在提高环氧胶粘剂耐热性方面所采用的方法,同时指出了耐热环氧胶粘剂的研究发展方向。     

聚酰亚胺齐聚物改性胶粘剂的制备及性能研究

利用2,2-双[4-（4-氨基苯氧基）苯1丙烷及偏苯三酸酐合成聚酰亚胺齐聚物,并用此齐聚物改性环氧树脂胶粘剂。使用红外光谱、凝胶化时间、接触角和拉伸剪切强度对改性胶粘剂性能进行表征。结果表明,齐聚物的加入对环氧树脂固化反应具有促进作用;当100质量份环氧中加入16份齐聚物时,胶粘剂力学性能最佳;当齐聚物用量为20份时;胶粘剂表面能最高。     

耐高低温环氧有机硅胶粘剂的力学性能研究

介绍了一种研制的室温固化、耐高温、耐低温环氧有机硅胶粘剂。通过对胶粘剂的剪切强度分析，探讨了原料配比，偶联剂等因素对环氧有机硅胶粘剂力学性能的影响。研究表明，增韧剂在胶粘剂中含量适当时（质量比25％，能与固化剂充分反应，有机硅与环氧树脂也能获得较好的相溶性，制备的环氧有机硅胶粘剂的综合性能较优；硅烷偶联剂能改善胶膜界面层的胶接强度，提高环氧有机硅胶粘剂的剪切强度。     

环氧胶粘剂耐热性的研究进展

介绍了耐热环氧胶粘剂的主要性能特点,论述了近年来在提高环氧胶粘剂耐热性方面所采用的方法,同时指出了耐热环氧胶粘剂的研究发展方向.     

Plasma-Sprayed Aluminum and Titanium Adherends: III

The durability of aluminum and titanium adherends, plasma-sprayed with polymeric coatings, and bonded with an epoxy and a polyimide adhesive has been investigated. Organic-polymeric coatings were plasma-sprayed using epoxy, polyester, polyimide, and cyanate ester components. Durability was investigated using a wedge-type specimen by exposing the specimens to an environmental cycle that included low temperature, high relative humidity at elevated temperature, high temperature at atmospheric pressure in air, high temperature in a vacuum, and room temperature. The systems exhibiting durability comparable with that for adherends treated using standard solution methods, included aluminum or titanium coated with a bis-maleimide/cyanate ester (B-CE) or a bis-maleimide-LaRC TPI-1500^® (B-TPI) mixture and bonded with an epoxy or a polyimide adhesive. For these B-CE- and B-TPI-coated specimens, failure during exposure to the environmental cycle occurred in the adhesive, indicating a favorable adherend/plasma-sprayed coating interaction.     

Improvement in the adhesion of polyimide/epoxy joints using various curing agents

An improvement in the adhesion strength of polyimide/epoxy joints was obtained by (1) introducing a functional group on the polyimide surface, (2) improving the mechanical properties of the epoxy adhesive, (3) increasing the curing temperature, and (4) using polyamic acid as an adhesion‐promoting layer. The functional group on polyimide was introduced via treatment with aqueous KOH. An adhesion‐promoting layer was formed by spin coating polyamic acid onto a modified polyimide surface. The maximum adhesion strength of the polyimide/epoxy joint was obtained using polyamic acid as both the adhesion‐promoting layer and as the curing agent. The surface energy of the modified polyimide was examined using contact angle measurements and Fourier transform infrared spectroscopy, and the peel strength was determined by the T‐peel method. The peeled surfaces were analyzed using scanning electron microscopy and X‐ray photoelectron spectroscopy.© 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 812–820, 2002     

热塑性聚酰亚胺增韧环氧树脂胶粘剂的研制

利用热塑性聚酰亚胺粉末增韧改性环氧树脂,得到了综合性能优异的胶粘剂体系,并对其凝胶化时间、接触角、表面能、疏水性、耐热性等各项性能进行了研究。     

聚酰亚胺-环氧树脂胶黏剂的固化动力学研究

以2,2-双[4-(4-氨基苯氧基)苯基1丙烷(BAPOPP)和2,2-双[4-(3,4-二羧基苯氧基)苯基]丙烷二酐(BPADA)为原料在室温下于DMAe溶剂中合成了一种新型聚酰亚胺,并用其改性环氧树脂体系获得聚酰亚胺-环氧体系胶黏剂.利用差示扫描量热计(DSC),以不同的升温速率对聚酰亚胺-环氧树脂胶黏剂进行DSC...     

国外粘合剂工业进展

综述近年度美国、欧洲和亚洲国家的粘合剂工业现状.以及在乳液、压敏、热熔、UV 固化、环氧、聚氨酯、丙烯酸酯、聚酰亚胺、点焊胶等各类胶粘剂领域正在研究开发的课题,指出粘合剂工业的发展动向。     

Adhesion promotion for epoxy resin/copper and polyimide/copper joints by a two-component coupling system of poly(4-vinylimidazole) and cystamine

A two-component coupling agent layer on copper, produced by immersion of copper in poly(4-vinylimidazole) solution and then in cystamine solution, showed better anticorrosive performance and higher adhesive strength for epoxy resin and polyimide than each single component even at high temperature.     

Surface Preparation of a Stainless Steel for Adhesive Bonding

The surface preparation of stainless steel of identified martensitic structure has been studied in relation to the strength of adhesive bond with an epoxy-phenoiic, an epoxy and a polyimide adhesive. Attention has been given to replacing the inefficient mechanical removal of deposited carbon (“smut”) by chemical means. Seven different chemical treatments by acids or acid combinations were tried. Hydrofluoric or sulphuric acids modified by nitric or oxalic acids respectively were most satisfactory followed by chromic acid desmutting.     

开孔聚酰亚胺泡沫粘接性能研究

探讨了BHPI-J-2010胶粘剂的固化度、耐热性、固化工艺、粘接铝的拉剪强度及粘接聚酰亚胺泡沫的可行性;研究了BHPI—J-2010胶粘剂粘接聚酰亚胺泡沫／45号钢的拉伸性能及固化工艺;考查了开孔聚酰亚胺泡沫／45号钢粘接试样高温拉伸和蠕变性能及胶粘剂的使用寿命。结果表明,BHPI—J-2010胶粘剂对开孔聚酰亚胺泡沫具有良好的粘接性能。