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�������պ����ѧѧ�� 2007, Vol. 33 Issue (01) :119-122    DOI:
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Analysis of the properties for epoxy curing agents with reactivity and toughening
Yang Yang, Chen Gong*
School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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ժҪ ���ɻ��Ӻͼ�ȩ���γɵĶ�����Ϊԭ��,�ϳ���һ�����ͽṹ�Ļ����̻���˫(2-�ǻ�-3 -���һ����׻�-5-�ɻ�����)����(BA),���ú������(IR)���˴Ź�����(1HNMR)�����˲���ṹ.ͨ���� ʾɨ������(DSC)�о��˸ù̻����ķ�Ӧ����,ȷ���̻��������������Ϊ43.19%.�̻� ��֬��̬��ѧ����(DMA)����,����BA���ӽṹ�д������ɻ�,�̻���ᷢ����β��- �ɳ�, �ܹ������֬����.��ѧ���ܲ��Է���BA�̻���֬�ij��ǿ�ȱ���ͨ���㰷�̻���֬����� ��36.91����,֤��BA���и߻��Ժ�����˫��Ч��.
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Abstract�� A type of novel epoxy curing agent, Bis(2-hydroxy-3-amidoethylaminemethyl-5 -nonylphenyl) methane(BA) was synthesized from dimer which was obtained from n onylphenyl and formaldehyde. The structure of this curing agent was attributed b y IR and ��1��HNMR. The reactivity of the curing agent was investigated by using the differential scanning calorimetry(DSC), and the optimum content of BA used in c uring process was definited at 43.19% in weight. From the results of dynamic mec hanical analysis(DMA), the ���- relaxation contributed by the nonyl of BA was con firmed, which increased the toughness of the cured resins. The results of mechan ical performance test demonstrates that the impact strength of the resins cured by BA was ��36.91%�� higher than that of the resins cured by normal aromatic amine. In conc lusion, BA is a elasticizer and active curing agent for epoxy resins.
Keywords�� curing agents   epoxy resins   reactivity   toughening     
Received 2006-01-19;
About author: �� �� (1981-), ��, ����������,˶ʿ��, chengong@buaa.edu.cn.
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����, �¹�.һ�ֻ��Ի������͹̻������ܷ���[J]  �������պ����ѧѧ��, 2007,V33(01): 119-122
Yang Yang, Chen Gong.Analysis of the properties for epoxy curing agents with reactivity and toughening[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2007,V33(01): 119-122
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2007/V33/I01/119
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