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clytze_520

金虫 (小有名气)

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A curing agent for epoxy resins prepared by reacting 25- and 26-bis(aminomethyl)-bicyclo[2.2.1]heptanes (1 equivalent of the active hydrogen in the amino group) with an epoxy resin (a reaction product of bisphenols or a novolak resin with epichlorohydrin; an epoxy equivalent of 150-300 g/eq.; two or more epoxy groups per molecule; bisphenol-A diglycidyl ether or bisphenol-F diglycidyl ether in particular)(0.025-0.50 equivalents of the epoxy group). The reaction temperature is 40.degree.-120.degree. C. The amount of the curing agent is within the range of 20-75 parts by weight relative to 100 parts by weight of an epoxy resin to be cured. The curing agent has a high curing rate at a room temperature and the epoxy resins cured by it have a good appearance as well as excellent adhesion water resistance and chemical resistance. Therefore the curing agent is suitable for paints civil engineering and construction materials adhesives casting resins laminates etc.
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小浩子郭

金虫 (正式写手)

【答案】应助回帖

感谢参与,应助指数 +1
环氧树脂的固化剂是通过25、26-二(氨甲基)双环[2.2.1]庚烷(与氨基酸中的氢活性相同)与环氧树脂反应制得的,并且这种环氧树脂(是双酚的反应产物或者是酚醛清漆树脂与环氧氯丙烷结合的产物,一个环氧当量大约是150-300g/当量,两个或两个以上环氧树脂组为一个分子,尤其是双酚A环氧丙醚或者双酚F环氧丙醚是这个样子的)(为0.025-0.5环氧基的等价物)。反应温度为40--120度,如果加入环氧树脂的量为100质量数,则固化剂应加入量的质量数为20-75。固化剂在室温下就有很高的固化率并且环氧树脂拥有一个良好的表面以及优异的附着力、耐水性和耐化学腐蚀性。因此,固化剂适用于油漆土木工程和建筑材料粘合剂铸造树脂复合材料等。
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2楼2014-09-26 16:58:11
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