以双马树脂为原料,加入氰酸酯、聚芳醚砜、发泡剂等填料,并通过混料、延压成膜等工艺制备出耐高温发泡胶膜J-381.通过万能拉力机测试了发泡胶膜在不同温度下的管剪、压缩和抗拉等性能;管剪测试表明该发泡胶具有优异的粘结性能和耐温性能:-55℃、25℃和150℃管剪强度均不小于8MPa,205℃管剪强度大于4MPa.与多种材料的抗拉测试结果表明J-381与各种材料具有优异的粘结性能:铝-铝抗拉强度9.2MPa;钛-钛抗拉强度5.9MPa;双马基复材-双马基复材抗拉强度5.9MPa.J-381与典型环氧树脂发泡胶膜、氰酸酯树脂发泡胶膜和国外双马树脂发泡胶膜的基本性能也进行了比较.

用耐热的环氧树脂、改性环氧树脂(自制)、稀释剂、紫外荧光粉、脂肪多胺、聚醚胺和促进剂按一定比例混合,制备了一种可用于干式空心电抗器包封绝缘微裂纹检测及修复的渗透剂.并通过万能拉力机、介电测试仪,电镜等对渗透剂的基本性能、介电性能、微观结构等性能进行了考察.结果 表明,本渗透剂对干式空心电抗器包封绝缘结构的复合材料有良好的浸润性、渗透性以及粘接性能,并有着较好的耐热性能,可保证干式空心电抗器整个工作温区内正常运行,固化后的渗透剂具备优秀的机械和电气性能:拉伸剪切强度为8.64MPa,冲击强度为34.5kJ/m2,体积电阻率为8.1×101SQ ·cm,电气强度为26.4kV/mm,适合干式空心电抗器包封绝缘微细裂纹户外的判定及修复.

在航空航天领域,发泡结构胶黏剂应用广泛,其作用是提高制件的整体力学性能.另外,由于其密度低,有利于制件的减重.介绍了发泡结构胶的特点、作用、应用部位.主要阐述了发泡结构胶在国内外的发展历程和发泡结构胶的品种,列举了部分中温、高温发泡结构胶的主要性能指标.详述了波音公司对发泡结构胶的分类和标准要求,并对发泡结构胶黏剂的研发方向做出了展望.

提供了一种制备氰酸酯预聚物/聚砜共混树脂的工艺,该工艺过程平稳、温和、易控制.通过红外光谱IR研究,随着反应时间的延长,-OCN的红外特征吸收峰变弱,triazine特征吸收峰明显增强.随着PSF/BADCy比值提高,共混树脂的常温剪切强度相应增加;低含量的PSF对树脂高温(230℃)强度影响不大,高含量时,高温剪切强度降低明显.通过DMA分析,共混物只体现出BADCy相关的Tg值,BADCy预聚物和PSF树脂事实上形成一种互穿网络结构(IPN).共混树脂的真实Tg值为230℃左右.E'-T关系表明,只有高含量的PSF才对BADCy有明显的增韧作用.Tan δ～T关系表明,Tanδ=0.02,总体上共混树脂的韧性不高.通过TG分析,共混树脂的初始分解温度达到400℃,是一种优异的耐高温材料,共混树脂的失重过程完全遵从BADCy自身的热氧化分解规律.

The toughening modification methods of cyanate ester resins, including the modification methods with the thermoset resins, the thermoplastic resins, the rubber elastomers or the nanoparticles, and other methods, were briefly introduced in this paper.

以氰酸酯树脂和中空玻璃微球为原料制备了复合泡沫.通过检测复合泡沫的剪切强度、平面拉伸强度以及压缩强度评价复合泡沫的机械性能.结果表明,复合泡沫的机械性能由玻璃微球的性质以及在复合泡沫中的含量决定.微球的密度越大,泡沫的机械性能越高,反之亦然.泡沫的力学性能与微球的含量几乎呈线性降低的关系.通过TG分析表明,复合泡沫的热性能主要由氰酸酯本身性质决定,起始分解温度为400℃,但在高温阶段,微球的存在加速了复合泡沫的分解速率.在180℃下经过30d热老化试验,复合泡沫的热失重不明显,但固化物的外观颜色加深.

对J-273高温固化发泡胶进行了力学性能、耐水煮、耐盐雾等性能的测试.研究结果表明,J-273高温固化发泡胶的综合性能满足波音BMS5-90V标准的要求,而且具有良好的质量批次稳定性,可广泛用于金属或各种复合材料构成的夹芯蜂窝结构件中,适于蜂窝零件的周边、侧面和与之相接的梁、肋、腹板之间的结构胶接.

研制了一种双组分室温固化型糊状环氧树脂胶粘剂.该胶具有双增韧机制,即环氧组分采用端羧基液体丁腈橡胶(CTBN)增韧,固化剂采用了分子结构内具有多个醚键的胺类作内增韧.该胶粘剂可在室温下固化,且具有厚胶层高强度的特性,即胶层厚度在0.1～1.6 mm内可保持剪切强度基本不变,已用于无人机复材机翼结构件的胶接、各种复材结构件的粘接与修理,取得了良好的效果.

对J-262高温氰酸酯发泡胶黏剂进行了力学性能、介电性能、耐水煮、耐盐雾、湿热老化等性能的测试.研究结果表明:J-262高温氰酸酯发泡胶黏剂既有传统环氧树脂型高温发泡胶黏剂的力学性能,又具备优良的介电性能,其综合性能满足波音BMS5-90V标准的要求.J-262高温氰酸酯发泡胶黏剂对铝材、PMI泡沫以及纸蜂窝都有良好的粘接力,发泡胶固化后的本体强度大于PMI泡沫以及纸蜂窝的本体强度,可以用于PMI泡沫、纸蜂窝与铝材之间粘接和填充,而且具有良好的质量和批次稳定性,可广泛用于金属或各种复合材料构成的夹芯蜂窝结构件中,以及蜂窝零件的周边、侧面和与之相接的梁、肋、腹板之间的结构胶接.

研究合成了甲基苯基乙烯基有机硅树脂、甲基苯基氢基有机硅交联剂、配位铂催化剂,再通过优化组合,制备出高透明、高折光率LED封装用有机硅胶黏剂,确定封装胶的凝胶温度100℃、固化温度110.9℃和后处理温度142.2℃,固化反应热△H为-7.74J/g.讨论了树脂、交联剂、催化剂配比对封装胶力学性能影响.分别研究了80℃、120℃、150℃下封装胶的固化状态,发现封装胶的力学特点是低温下剪切强度不高,高温强度不低.所制备的封装胶热稳定性高,通过TG分析,失重拐点在260℃左右;封装胶的光学性能优异,其透光率为98％、折光率为1.51.

The trapezoid polyphenylsilsesquioxane resin and heat-resistance sticky silicone resin were synthesized.An adhesive was prepared by blending filler,promoter,catalyst and the proportional mixture of the two silicone resins mentioned above.The bonding property between titanium alloy and thermal insulation material with above-mentioned adhesive was discussed.This adhesive was a kind of room temperature curing silicone adhesive,its bonding property was good either to titanium or to heat insulation blanket and the weight loss of the adhesive was small even at 650 ℃.The prepared adhesive could satisfy the practical bonding request between titanium alloy and heat insulation material.

The foaming agents and its classification were introduced in this paper. Thermal decomposition of foaming agent and thermal expansion type foaming agent applied in foaming adhesive were also discussed. Effect of the two foaming agents on foaming structural adhesive performance was particularly expounded. Due to the different foaming mechanism of the two foaming agents,different bubbles was formed after curing. The closed bubble formed when thermal expansion type foaming agent was used,so the relevant adhesive strength was improved after curing. The content of foaming agent in adhesive altered the density of the cured adhesive. The different strength with the different density may has important guiding function for bonding parts and application requirements.

Polyarylethersulfone with cardo group(PES-C)was blended with the bisphenol A cyanate(BCE).Then the prepolymerization of the cyanate in the blend was conducted under a certain conditions,finally a kind of bisphenol A cyanate prepolymer systems modified with PES-C was obtained.Via FT-IR and DSC,the curing process was determined.The prepolymer and cured prepolymer was characterized by SEM separately.The impact strength and the bonding strength between aluminum alloy and the modified systems were investigated.The results showed that the PES-C polymer played a significant toughening effect on CE prepolymers and the modified systems had a good dielectric property,the shear adhesion performance was excellent from RT to 230℃(the shear strength was over 20MPa).The modified systems could be applied as matrix resin for high temperature resistant structural adhesive.

首先研究了PT/BADCy二元树脂体系的力学性能和耐热性能,结果表明:BADCy的加入可以改善PT树脂韧性,体系中PT树脂比例越高,灼烧后混合树脂的残留率越高。还重点研究了PT/BADCy/PASF三元树脂体系,力学分析表明:PASF的加入,大大提高了体系的韧性,当含量为10%wt时,常温、200℃以及300℃剪切强度分别为20.88、22.78、14.36MPa,90°常温剥离强度为26.89N/cm。热学分析表明:不同含量PASF的三元树脂体系的热降解趋势基本一致,高温灼烧后残留率大致相同。PASF树脂的耐热性、耐灼烧型与PT/BADCy相当,三者可以实现理想匹配。

The phthalonitrile resin is a novel kind of structural resin,which has excellent mechanical performance at high temperature and heat-oxidation stability.A series of phthalonitrile resins made by the Navy Research Laboratory(NRL) of the United States were outlined.Firstly,phthalonitrile resins with various type of bridge chains were summarized,including the structure of monomers,the preparation methods and the heat-resistance.Secondly,the curing mechanism,the curing agent types and characters were discussed.At last,the application fields were introduced,which included hot melt adhesives,the phthalonitrile-epoxy blends,the fiber-reinforced composites.It was pointed out that it was essential for research worker in china to synthesize new bis-phthalonitrile monomers having proprietary intellectual property rights and the application of phthalonitrile resin in the field of high temperature should be widen.

The second generation acrylate adhesives have been largely applied in the bonding field just because their advantages such as room temperature curing and suitable for oleic surface bonding.Still,they have some disadvantages such as short pot life,not stability in long term store and not being applied with large amount at one time,so their application have been restricted in some places.For the need in the manufacture of Lead-acid battery,in this work,a new oxide-reduction system for catalytic curing is developed.It has the following advantages:the reducing agent in the reaction is produces continuously and consumed in the curing reaction course,so the amount of the reducing agent in the reaction is kept lower level and that makes the whole curing course steady and smooth.At the case of the amount of the formulated adhesive is 12g,its gel time is 1h and the most high temperature caused by the exothermic reaction is not higher than 50℃.Now,it is possible to use acrylate adhesives in the manufacture of Lead-acid storage battery.

Some famous and more effective high temperature resistant structural Adhesives used in the area of airplane and space industries of former Soviet Union were introduced in this paper.

s:The chemical structure, synthesis methods, development and application of carborane and carborane-containing copolymers super heat-resistant adhesives were reviewed in this paper.

The characteristics and the applications of silicone pressure sensitive adhesive were introduced. The history and current situation of research and development for this kind of adhesive were reviewed. The future prospect of silicone pressure sensitive adhesive was looked forward to.

The development of low temperature curing and high temperature serving adhesives in the field of inorganic and elementary organic chemistry in Russia was introduced in this paper.