蜂窝夹层结构面板胶粘剂的研究

介绍了蜂窝夹层结构用面板胶SY -2 4B胶膜的力学性及工艺性能 ,并将其与双组分糊状胶SY -2 1作对比。实验结果表明 ,SY -2 4B胶膜具有更高的综合性能与耐疲劳性能 ,制成的蜂窝夹层结构具有更高的可靠性     

J-125铝合金复合层板结构胶膜的研制

介绍了J-12 5改性环氧结构胶膜的基本组成和固化条件 ,并讨论了各组成及固化参数对胶粘剂力学性能的影响。该胶具有良好的综合性能 ,可广泛应用于铝合金层板胶接结构。     

铝蜂窝芯材拼接胶膜的应用

研制了一种铝蜂窝芯材拼接胶膜，介绍了该胶膜的基本组成和成膜工艺，描述了铝蜂窝芯材拼接胶膜的拼接工艺和固化规范，并对拼接性能进行了测试。     

耐热200℃双马改性环氧结构胶膜的研究

研制了一种双马改性环氧结构胶膜,探讨了主要组份对胶粘剂胶接性能的影响,考核了胶粘剂的耐热、耐老化等综合性能。该胶不但对金属之间具有良好的粘接强度,而且对双马树脂基复合材料具有良好的粘接性能。用扫描电镜(SEM)观测固化产物断裂面的微观形态为均相增韧结构;通过示差扫描量热法(DSC)测定该胶的热变形温度为211℃,用热重分析法(TG)测定该胶固化物明显热失重温度为378℃。热力学分析试验表明该胶可以在200℃下长期工作,提高了国内环氧类型膜状胶粘剂的耐温等级。     

Fabrication and evaluation of structural film adhesive using oxazolidinone modified novolac epoxy resin

Epoxy film adhesives are of prime importance for the fabrication of lightweight honeycomb structures for aerospace industries. This work involves the synthesis of oxazolidinone modified epoxy novolac resin (EPN-OXA) via the reaction of EPN and toluene diisocyanate. EPN-OXA was characterized by Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, gel permeation chromatography, and epoxy equivalent weight. EPN-OXA was blended with solid epoxy resin, polyethersulfone (PES) toughened liquid epoxy resin, dicyandiamide, and aluminum powder to fabricate a film adhesive curing at 170–180 °C. Effect of additives and curative on the adhesive property was studied to optimize the composition. Effect of PES on the optimized composition was studied in detail. The best composition exhibited lap shear strength of 370 ± 10 kgf cm⁻² at 25 °C and the strength was retained to 75% at −196 °C and 52% at 120 °C. PES significantly enhanced the interfacial strength at different temperatures (~1.6-fold at −196 and 25 °C and ~1.8-fold at 120 °C). It also improved tensile strength and fracture toughness by 1.4- and 2-fold, respectively. The toughening effect of PES was further confirmed by scanning electron microscopy images. PES marginally reduced the glass-transition temperature and it exhibited no effect on thermal stability. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 47520.     

碳/环氧面板-铝蜂窝夹层结构件损伤修补工艺

本文介绍了我单位研制的某型号卫星碳/环氧面板-铝蜂窝夹层结构件结构特点及损伤情况，且对损伤修补内容作了较详细叙述．     

氟橡胶-金属粘接用环氧胶固化动力学研究

采用具有高热变形温度的砜类聚合物制备的增粘剂,配制了可用于氟橡胶与金属粘接的环氧胶粘剂,通过凝胶时间的测定、差式扫描量热法(DSC)和傅立叶变换红外光谱(FTIR)研究了胶粘剂的固化反应过程及动力学。结果表明,胶粘剂在固化反应过程中有一个宽广且平缓的放热峰,对固化十分有利。胶粘剂固化反应表观活化能为63.8 kJ/mol,固化反应级数为0.891。     

纸质蜂窝夹芯的粘接技术

按纸质蜂窝夹芯材料的生产过程，较为详细地介绍了它的生产工艺和关键工序应掌握的技术以及各项工艺参数。     

结构型紫外线固化胶粘剂的研究

介绍了结构型紫外线固化胶粘剂的特征及应用，重点研究了影响结构型紫外线固化胶粘剂粘接强度的因素。     

中温固化单组分环氧胶膜的研究

通过混合3种不同牌号的环氧树脂获得了膜状的胶粘剂,以双氰胺为固化剂,配合改性的固化促进剂,再加入丁腈橡胶等其他添加剂进行中温固化,经优化确定最后的配比为m(E-44)∶m(E-20)∶m(F-44)∶m(改性丁腈-40)∶m(双酚A)∶m(改性双氰胺固化剂)∶m(改性固化促进剂)=55∶25∶20∶15∶12∶10∶5.得到的固化产物具有优异的综合性能,贮存期较同类产品长3个月.     

结构胶在航空工业中的研究现状及进展

随着航空工业的迅猛发展,结构胶在航空工业中的使用日益广泛。综述了结构胶在航空领域中的研究进展,阐述了国内外航空用结构胶的近况,详细分析了目前客机中结构胶的需求及其应用的关键技术,并对今后航空用结构胶的发展趋势进行了展望。     

Mechanical analysis of structural adhesive for marine joints

A structural adhesive from I.C.R., X07 Extreme®, was fully characterised through tensile test, static and dynamic lap-shear strength test, cleavage peel test and DSC. Lap-shear tests were performed by using either aluminium, stainless steel and glass fibre reinforced polymer as substrate and after aging the specimen under extreme environmental conditions. The performance of this novel adhesive was compared to that of a structural adhesive of a competitor. The work summarises the typical procedures intended for the qualification of a structural adhesive for marine joints.     

Electrolyte‐resistant epoxy for bonding batteries based on sandwich structures

Adhesives that are stable in Li‐ion battery electrolytes are required to realize the potential of new battery designs that integrate structural elements with energy storage. Here, several polymers, commercial adhesives, and sealants were investigated to bond and seal a Li‐ion battery sandwich panel. Gravimetric electrolyte uptake measurements were compared with Hansen solubility parameters to predict long‐term durability of the materials exposed to battery electrolyte. The durability of adhesively bonded joints with an epoxy adhesive, which was selected as the lowest electrolyte uptake material, was examined using single lap shear strength tests and three‐point bending tests in a fabricated sandwich panel. The strength of the epoxy decreased after exposure to battery electrolyte due to solvent uptake in the bond. The addition of lithium hexafluorophosphate to the ethylene carbonate/dimethyl carbonate mixture severely decreased the strength with respect to the pure solvents. In device testing, the sandwich panel did not show any visible damage or leakage when loaded to above 1000 N during three‐point bending tests. Using sol extraction measurements and differential scanning calorimetry analyses, the optimized curing temperature for the epoxy adhesive ranged from 80 to 100 °C. At these temperatures, the cured adhesive had a highly crosslinked structure with low sol extraction. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135, 46059.     

HT-623钢桥面板铺装环氧结构胶的开发及应用

由环氧树脂、改性胺固化剂、端羧基液体丁腈橡胶增韧剂等材料合成的HT- 623环氧结构胶,可室温固化,常温剪切强度≥20MPa, 82℃和-49℃剪切强度均≥15MPa,冲击强度≥30kJ·m-2,主要用于钢桥面铺装工艺中粘接碎石层,然后再在粘接面上铺装沥青桥面,防止沥青层起壳、脱落等现象发生。     

One-component epoxy adhesive for repair of cell phone board

The development of a one-component epoxy adhesive for cell phone board repair was described. The most important goal of this study is to obtain long storage stability in conjunction with the curing reaction process at a relatively low temperature of 95 °C. Bisphenol-A type, bisphenol-F type, and NBR-based epoxy resins were used as the basic resins. Dicyandiamide (DICY) was used as a curing agent, and 2-methylimidazole (2MI) was used as an accelerator. 2MI was encapsulated using a copolymer of methacrylic acid and dodecyl methacrylate to achieve latent curing performance. After mixing the epoxy resin with DICY and encapsulated 2MI, this curing system showed excellent storage stability with almost no viscosity increase for 2 months at 20 °C, and full curing was achieved at 95 °C for 50 min. We determined the optimum formulation of the epoxy adhesive for adhesion of a cell phone board after the measurement of physical properties.     

固化平稳的丙烯酸酯结构胶的研制

以异丙苯过氧化氢、硫脲衍生物和自制促进剂为引发体系，制备了一种双主剂型丙烯酸酯结构胶，并对其固化放热峰温度、固化时间、剪切强度等方面进行测定。结果表明，与一般丙烯酸酯结构胶粘剂相比，该胶粘剂具有固化放热平稳，放热峰温度低等鲜明特点。     

氯丁橡胶与金属热硫化型胶膜的研究

采用机械共混法和胶料成膜技术制备出一种酚醛树脂(PF)-橡胶型膜状胶粘剂(胶膜)。结果表明:当n(37%甲醛)∶n(苯酚)∶n(氢氧化钠)=1.8∶1∶0.1、反应温度为70℃和反应时间为2.5 h时,合成的甲阶PF具有较高的羟甲基含量(28.3%),满足PF-橡胶型胶膜的制备要求;当m(氯丁橡胶)∶m(氯化天然橡胶)∶m(PF)∶m(炭黑)=100∶(5～10)∶(70～80)∶40、m(PF)∶m(硼酚醛树脂)=4∶1时,胶膜的剪切强度超过5.0 MPa、180°剥离强度超过4.0 kN/m且胶接件的破坏形式多为橡胶内聚破坏;该胶膜具有较好的热稳定性(热失重温度为300℃左右),满足氯化橡胶生胶片与金属之间的热硫化胶接要求;该胶膜与适宜底胶配合而成的双涂型胶接体系,可实现氯化橡胶生胶片与树脂基复合材料之间的热硫化胶接。     

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。     

增粘树脂在SBS改性胶粘剂中的应用

研究了增粘树脂在SBS改性胶粘剂中的应用，其中包括增粘树脂品种、用量对胶粘剂剥离强度的影响，同时研究了该胶粘剂对各种鞋材的粘结性。结果表明，该胶对许多鞋材的初粘力和剥离强度都达到了制鞋业的要求。     

室温固化双组分环氧树脂结构胶的研究

以环氧树脂(EP)和二乙烯三胺基甘油正丁基醚(593)固化剂为基体,以自制底胶和预处理过的石英粉为填料,制取室温固化双组分EP结构胶。研究了不同配方、粘接工艺对EP结构胶粘接性能的影响。实验结果表明,该EP结构胶在室温条件下具有优异的粘接性能,用于粘接45#钢/钢时,其室温拉伸剪切强度为27.4MPa;该EP结构胶浇铸体的拉伸强度为44.6MPa,拉伸模量为6.82GPa;一种新的自制底胶和经KH-560偶联剂处理过的石英粉填料是拉伸剪切强度显著提高的关键因素。