共查询到17条相似文献,搜索用时 109 毫秒
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耐高温胶粘剂的研究进展 总被引:5,自引:0,他引:5
文章对当前国内外耐高温胶粘剂进行综述。介绍了各类耐高温胶粘剂的物化性能,以及提高耐高温胶粘剂耐高温性能的一些技术途径和改性方法,并对今后耐高温胶粘剂的发展趋势进行展望。 相似文献
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综述了耐高温热固性树脂胶粘剂的发展过程与研究现状,介绍了近年来国内外几种性能优异的热固性树脂胶粘剂,提高其高温性能的一些主要途径和改性方法,并介绍了新型功能填料在树脂中的应用情况,最后对耐高温热固性树脂胶粘剂的总体发展趋势进行了展望。 相似文献
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化学交联法改善氧化淀粉胶粘剂性能的研究 总被引:1,自引:0,他引:1
以硼砂、甲苯二异氰酸酯(TDI)、环氧氯丙烷和三聚氰胺-甲醛树脂等分别作为氧化淀粉的交联改性剂,研究了交联改性剂类型对氧化淀粉胶粘剂耐水性、干燥速率等影响。结果表明:经交联改性后,氧化淀粉胶粘剂的耐水性及干燥速率均明显提高;当交联改性剂为三聚氰胺-甲醛树脂时,相应胶粘剂的吸水率(58.9%)相对最低、干燥时间(700 s)相对最短,说明其改性效果相对最好;当交联改性剂为硼砂时,相应胶粘剂的吸水率(144.9%)相对最高、干燥时间相对最长,说明其改性效果相对最差。用三聚氰胺-甲醛树脂交联改性淀粉胶粘剂制成的瓦楞纸板,在常温水中浸泡48 h后不开胶,完全满足包装纸箱用相关标准的耐水性指标要求。 相似文献
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A. J. Kinloch 《Polymer International》1983,15(1):83-83
In recent years a new generation of advanced structural adhesives has become available. They are typically based upon epoxy resins modified by the presence of a second phase of dispersed rubbery particles. This multiphase microstructure results in the material possessing a considerably higher toughness or crack resistance, compared to the unmodified, single-phase resin, but with only a minimal reduction in other important properties such as modulus and high-temperature and creep resistance. Even more recently, polyimide adhesives have also been toughened employing this principle. The present paper considers the following aspects:
- 1 The chemistry of rubbery-toughened thermosetting polymers developed for adhesive applications.
- 2 Structure-property relationships of multiphase adhesives which incorporate a dispersed rubbery phase or rigid particulate fillers. The mechanisms of toughening are discussed and related to the microstructure. The effects of volume fraction, particle size and particle size distribution on the polymer's fracture energy are also described
- 3 The particular problems encountered when using such toughened multiphase adhesives in structural joints are reviewed, including aspects of joint design and environmental effects.
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