دراسة تأثير الحجم الحبيبي للدقائق و درجة حرارة التشكيل على الخواص الميكانيكية للمواد المركبة ذات الأساس من البوليمر
This research deals with the study of the effect of adding pure aluminum powder of different sizes (106μm, 250μm,1-2mm)to novolac materials. This has been achieved by hot pressing matrix and reinforcement materials, after preparing the matrix from novolac (85%of phenol formaldhyd and 15%of hexamethy...
| Format: | Article |
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| Language: | English |
| Published: |
Unviversity of Technology- Iraq
2007-05-01
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| Series: | Engineering and Technology Journal |
| Online Access: | https://etj.uotechnology.edu.iq/article_181328_863875be8487b959d050c544d56c98c8.pdf |
| Summary: | This research deals with the study of the effect of adding pure aluminum powder of different sizes (106μm, 250μm,1-2mm)to novolac materials. This has been achieved by hot pressing matrix and reinforcement materials, after preparing the matrix from novolac (85%of phenol formaldhyd and 15%of hexamethylin tetra amin as hardener with the assistance of an acid).After sieving the matrix to the required particles size , a compression pressure (15Mpa) has been applied for 30 minutes as forming time, and under different forming temperature degrees ranging from75,100,125,150,200co. So their influence on the matrix characteristics and the compound material is studied.The results have shown that the addition of particles to the matrix improves to a great extent the mechanical properties, since testing deflection and hardness have shown an increase in direct proportion to increase in the grain size of the additive particles, which work as nucleas to increase the cross linking of the matrix.The tests show the best forming temperature is 150co which gives best properties. |
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| ISSN: | 1681-6900 2412-0758 |