| مقاله الیاف طبیعی در رزین (انتقال چوبی کائوچو در مواد مرکب )
In this study resin transfer molded composites were made in commercial resin transfer molding equipment by direct substitution of jute bast fiber for glass random fiber mats The goal was to determine their suitability for use in resin transfer molding equipment with regard to resin flow air entrainment and surface properties Mechanical prope
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| دسته بندی | پلیمر |
| فرمت فایل | zip |
| حجم فایل | 161 کیلو بایت |
| تعداد صفحات فایل | 6 |
Mechanical testing
Tensile tests on specimens measuring 25 by 250
mm were conducted according to ASTM 638-90 and
flexural tests on specimens measuring 11 by 140 mm
by ASTM 790-90 at the Forest Products Laboratory
Engineering Mechanics Laboratory with load applied
perpendicular to the surface of the fiber mat. A
crosshead speed of 5 mm/min. was used. The stressstrain
curves were analyzed using a three-parameter
hyperbolic tangent model that has been shown to
accurately represent the stress-strain behavior. The
composite specimens were all tested to failure. Information
collected in the tests included tensile strength
at failure, tensile modulus, flexural strength, and
flexural modulus. Notched and unnotched highspeed
impact performance of the composites (13 by
65 mm) was evaluated by Izod impact according to
ASTIM D 256.
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