中国胶粘剂2002年1～5期目录索引

第一期1　ＳＹ - 2 4中温固化胶接体系6　互穿网络法增韧环氧树脂胶粘剂的研究9　废聚酯在聚酰胺热熔粘合剂合成中的应用1 2　油气管道接口热收缩带用固定片的研制1 5　木材加工用单组分室温湿气固化异氰酸酯树脂的研制1 9　微泡型单组分聚氨酯胶粘剂的研制2 2　聚醋酸乙烯酯乳液胶粘剂的改性研究2 5　ＳＡ/ＳＢＲ/ＰＶＡｃ三元地毯胶的研制2 8　带有压敏性的环氧胶带的研制31　聚氨酯锚固胶的研制34　聚醋酸乙烯酯乳液粘合剂生产新方法36　氯化乙丙胶的合成及其改性ＰＶＣ胶粘剂的配制39　国产ＣＲ - 2 4 4粘结型氯丁橡胶的性能及加工应用4…     

单组分室温固化环氧建筑胶粘剂的研究动向

环氧建筑胶粘剂是一类应用非常广泛的建筑结构胶。本文结合应用实际,简述了单组分室温固化环氧建筑胶包括湿气固化型建筑胶粘剂、丙烯酸改性环氧建筑胶粘剂、单组分环氧乳液胶粘剂等的研究进展,并着重介绍了以酮亚胺为固化剂的建筑胶的几个典型研究案例。     

醇对单组分湿固化异氰酸酯胶粘剂性能的影响

研究讨论了不同分子量聚氧化乙烯二元醇对常温湿固化异氰酸酯胶粘剂性能的影响与作用,以及不同种类多元醇对胶粘剂湿固化特性的影响。聚氧化乙烯多元醇因含有亲水性较强的氧乙烯链,而适于制备湿固化胶粘剂;通过使用适量的催化剂可使一般异氰酸酯胶粘剂实现常温湿固化。     

木材用单组分湿固化聚氨酯胶粘剂的合成

以多亚甲基多苯基多异氰酸酯(PAPI)、聚丙二醇(PPG-N210)和催化剂2,2'-二吗啉二乙基醚(DMDEE)为主要原料合成了一种木材用单组分湿固化聚氨酯胶粘剂,分析了NCO含量、催化剂用量、扩链系数对胶粘剂性能的影响,并与国内外木材用胶粘剂进行了比较。结果表明,NCO质量分数为12.3%、催化剂用量为0.1%、扩链系数为0.2,制得的胶粘剂室温固化且固化速度快,粘接性能较好,适合于木材的粘接。     

单组分环氧树脂胶粘剂的研究现状

综述了单组分环氧树脂胶粘剂的发展现状,介绍了湿气固化型、微胶囊包覆型、潜伏性固化剂型以及阳离子光固化等类型的单组分环氧胶的研究进展,重点讨论了潜伏性固化剂型环氧胶的改性方法及效果。     

NCO含量对单组分聚氨酯树脂性能影响

以聚氧化丙烯二醇、聚四氢呋喃二醇、甲苯二异氰酸酯和噁唑烷潜固化剂为原料制备单组分聚氨酯树脂。通过红外光谱、固化时间、力学性能、吸水率和粘接强度测试等表征手段研究了预聚物NCO含量对单组分聚氨酯树脂结构与性能的影响。结果表明,随着NCO含量的增加,固化时间增加,硬度、拉伸强度和断裂伸长率逐渐增加,吸水率先降低后升高,粘接强度先增加后降低;当NCO质量分数为8%时,单组分聚氨酯树脂的综合性能达到最优。     

单组分湿固化聚氨酯塑胶跑道面层胶

研究了以TDI、改性MDI及聚丙二醇醚为主要原料的单组分湿固化聚氨酯胶粘剂的合成。所合成的胶粘剂产品具有较好的初粘度与适宜的固化时间,断裂强度可达9MPa,伸长率可达230%,用于塑胶跑道面层胶,物理机械性能优异,并对减少游离异氰酸酯挥发进行了尝试。     

发泡型单组分聚氨酯胶粘剂的固化过程与动态力学性能的研究

发泡型单组分聚氨酯胶粘剂是由多元醇与多异氰酸酯合成的,用水固化。本工作的单组分胶粘剂的特点是室温固化、无溶剂,低粘度、发泡性好、粘接强度高。主要是为了满足引进自动生产线的工艺要求而研制的,用于粘接PVC贴塑钢板与岩棉,是船舶和舰艇建     

汽车用单组分湿固化聚氨酯胶粘剂研究进展

分别从异氰酸酯封端和硅烷封端两方面概述了近年采国内外汽车用单组分湿固化聚氨酯胶粘剂(PU胶)的研究开发进展。     

DSC法研究异氰酸酯胶黏剂与高含水率木材的固化反应

单组分湿固化异氰酸酯胶黏剂易发生反应,可常温固化.为研究水分与温度对湿固化异氰酸酯胶黏剂固化反应的影响,更好地掌握湿固化异氰酸酯胶黏剂的应用条件,采用DSC方法研究了单组分湿固化异氰酸酯胶黏剂与高含水率木材的胶接固化反应,并根据Kissinger方法求得单组分湿固化异氰酸酯胶黏剂的活化能.结果表明:随着升温速率的提高,固化反应的起始温度升高,但体系反应滞后于温度的上升;随着木材含水率的升高,固化反应起始温度降低,其活化能为84.25kJ·mol-1.     

Near Infrared Spectroscopy for On-line Monitoring of Alkali- Free Cloth/Phenolic Resin Prepreg During Manufacture

A NIR method was developed for the on-line monitoring of alkali-free cloth/phenolic resin prepreg during its manufacturing process. First, the sizing content of the alkali-free cloth was analyzed, and then the resin, soluble resin and volatiles content of the prepreg was analyzed simultaneously using the FT-NIR spectrometer. Partial least square (PLS) regression was used to develop the calibration models, which for the sizing content was preprocessed by 1stDER +MSC, for the volatile content by 1stDER +VN, for the soluble resin content by 1stDER +MSC and for the resin content by the VN spectral data preprocessing method. RMSEP of the prediction model for the sizing content was 0.732 %, for the resin content it was 0.605, for the soluble resin content it was 0.101 and for volatiles content it was 0.127. The results of the paired t-test revealed that there was no significant difference between the NIR method and the standard method. The NIR spectroscopy method could be used to predict the resin, soluble resin and the volatiles content of the prepreg simultaneously, as well as sizing content of alkali-free cloth. The processing parameters of the prepreg during manufacture could be adjusted quickly with the help of the NIR analysis results. The results indicated that the NIR spectroscopy method was sufficiently accurate and effective for the on-line monitoring of alkali-free cloth/phenolic resin prepreg.     

水性自干防腐涂料的制备

以环氧树脂与丙烯酸单体接枝共聚得到的水性自干环氧丙烯酸树脂为防腐涂料基料、钛铁粉为防腐颜料制得水性高效防腐涂料。研究了树脂中环氧树脂的用量、涂料中防腐颜料的种类和用量对涂料防腐性能的影响。结果表明,树脂中环氧树脂E-44的用量为30%、钛铁粉的用量为5%时,防腐涂料具有优异的防腐性能和力学性能。     

玉米秸秆木质素改性环氧树脂的制备与性能

将玉米秸秆木质素与双酚A环氧树脂混合,于100℃下预处理1 h,以改善环氧树脂的性能。对预处理后环氧树脂的黏度进行了测试,对改性环氧树脂与聚酰胺固化后材料的力学性能、动态力学性能、热稳定性以及燃烧性能进行了综合测试,考察了不同质量分数的玉米秸秆木质素对改性环氧树脂性能的影响。结果表明:以固化体系的总质量为基准,在w(木质素)=0~7%的范围内,与未添加木质素的环氧树脂相比,随着木质素质量分数的增加,改性环氧树脂22℃下的黏度从1 220 m Pa·s增大到13 220 m Pa·s;改性环氧树脂固化物的弯曲强度随木质素质量分数的增加先升高后降低,在w(木质素)=3%时达到最大值83.2 MPa,但其冲击强度下降,由20.7 MPa降低为13.6 MPa;改性环氧树脂固化物的玻璃化转变温度(Tg)随木质素质量分数的增加而增加,w(木质素)=5%时Tg提高了4.8℃;改性环氧树脂固化物的热稳定性有所改善,w(木质素)=7%时热失重50%的温度提高13℃,同时木质素的加入能够改善环氧树脂的阻燃性能。     

废弃棉短绒模板纤维素碳化机理的研究及多孔碳的制备

以废弃棉短绒为模板,采用溶胶凝胶技术制备出新型多孔碳模板,研究了纤维素碳化的机理。多孔碳的收缩率随着树脂/棉短绒复合体中树脂含量的增大而减小;所得多孔碳的气孔率随着树脂/棉短绒复合体中树脂含量的增大而减小,也随着碳化温度的升高而减小;多孔碳的弯曲强度随着树脂/棉短绒复合体中酚醛树脂含量的增大而增大,也随着碳化温度的升高而增大。     

PA6/ABS共混物性能研究

将聚酰胺6（PA6）与市售的丙烯腈-丁二烯-苯乙烯（ABS）树脂共混,制备PA6/ABS共混物。研究了ABS树脂的用量对PA6/ABS共混物力学性能的影响;采用苯乙烯及丙烯腈共聚物（SAN）和ABS粉料熔融共混制得不同胶含量的ABS/SAN共混物。研究了不同胶含量的ABS/SAN共混物对PA6/ABS共混物力学性能的影响。在PA6/ABS/SAN共混物中引入苯乙烯-丙烯腈-马来酸酐共聚（SAM）树脂取代部分SAN树脂,研究了SAM树脂的加入及引入顺序的不同对共混物性能的影响。结果表明, ABS树脂的用量在50%～60%左右时共混物性能最佳。随ABS/SAN共混物胶含量提高,共混物的拉伸强度、弹性模量、弯曲强度和弯曲模量逐渐降低。随SAM树脂替代SAN量增加,共混物的拉伸和弯曲性能先降低后增加。但共混物熔体流动速率降低明显,而SAM树脂的引入顺序对共混物的力学性能影响不大。     

The effect of sizing on composite properties for materials used in the shuttle filament wound case

An epoxy resin and a sized carbon fiber have been used to produce a light-weight filament wound case for the Space Shuttle. The sizing facilitates fiber handling during winding but may affect the amount of resin absorbed by the fiber during impregnation and the final mechanical properties of the composite. Naval Ordnance Lab rings were wound to study the effect of the sizing content on the resin absorption by the fiber bundles, the final tensile properties of the composite, and the type of failure observed at burst. The resin content of the rings studied was between 20 to 40 percent, and the sizing content, 0 to 1.6 percent by weight. Results showed that the sizing content was a critical parameter which determined the amount of resin absorbed by the fibers. The final tensile strength was dependent on the amount of sizing present. The tensile strength decreased by as much, as 60 percent when a low resin and high sizing content were present. The type of failure at burst was a function of resin content rather than size content.     

一种丙烯酸改性乳化环氧树脂的制备与研究

提供了一种制备改性环氧树脂乳液的新方法,以丙烯酸酯类为聚合性单体,加入环氧树脂,利用乳液聚合方法制成了环氧树脂含量达50％的丙烯酸酯改性环氧树脂乳液。通过测试交联度,证明环氧树脂确实参与了聚合反应。同时,还对乳化剂、功能性单体以及环氧树脂含量对乳液稳定性、产品收率、吸水性以及各项力学性能的影响问题进行了研究,得出：丙烯酸对环氧树脂的聚合交联起到了决定性的作用,丙烯酰胺的引入大大提高了乳液的稳定性和力学性能,环氧树脂含量越多产品性能越接近纯环氧树脂,聚合应采用阴、非离子复合乳化剂。     

高强水基环氧砂浆的研制

研制开发了一种高强水性环氧乳液砂浆,确定了水性环氧乳液砂浆的基本组成:水性环氧乳液掺量为5%,促进剂掺量1.25%(相水性环氧乳液的质量百分比),消泡剂掺量为0.3%(水性环氧乳液的质量百分比),并在此基础上加入适量的高效减水剂和保水增稠剂,最终得到了一种性能优良的水性环氧乳液砂浆.     

Effect of epoxy resin on morphology and physical properties of PVC/organophilic montmorillonite nanocomposites

Poly(vinyl chloride)/organophilic montmorillonite (PVC/OMMT) nanocomposites were prepared by means of melt blending. A liquid epoxy resin was used to aid PVC chains in intercalating into silicate layers. The effects of the preparation methods and epoxy resin contents on the melt intercalation of PVC were investigated. The morphology development, mechanical properties and optical properties of the PVC/OMMT composites were tested as functions of epoxy resin content and OMMT content. Wide‐angle X‐ray diffraction, transmission electron microscopy and scanning electron microscopy were used to characterize the morphology of the resulting composites. After being pretreated by the epoxy resin, the OMMT layers were largely intercalated into the PVC matrix, and even exfoliated at high epoxy resin content. The addition of epoxy resin led to a decrease in optical clarity of the composites but improved the processing stability, as indicated by yellowness index and haze measurement. However, the optical clarity of the composites containing 4 phr of epoxy resin (PVC/E‐OMMT) was improved by increasing the OMMT content, as shown by light transmission. Both the tensile strength and notched Izod impact strength of the PVC/E‐OMMT composites reached their maximum values when the OMMT content was 0.5 phr and the epoxy resin content was 2 phr. With further increase of the OMMT content and the epoxy resin content, the tensile strength decreased but was still higher than that of original PVC. The method of addition of epoxy resin had little effect on the physical properties but mainly influenced the morphology of PVC/OMMT nanocomposites. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 2184–2191, 2003     

三官能环氧树脂在聚乳酸交联挤出发泡中的应用

将三官能团环氧树脂作为交联剂用于聚乳酸（PLA）的挤出化学发泡成型,研究了三官能环氧树脂含量对PLA熔融结晶性能、交联度、熔体强度的影响以及对PLA化学挤出发泡试样的泡孔形态的影响。结果表明,随着三官能环氧树脂含量的增加,冷结晶温度提高,且添加三官能环氧树脂后熔融峰由单峰变成双峰,结晶峰面积、熔融峰面积以及结晶度都是先增加后减少的趋势;PLA体系的交联度和熔体强度的显著提高随着三官能团环氧树脂的增加;PLA体系泡孔破裂减少,开孔率减少,泡孔尺寸先减小后增大;较佳挤出机头温度为170~175 ℃。