Effect of macromolecular coupling agent on the property of PP/GF composites

Silane‐grafted polypropylene manufactured by a reactive grafting process was used as the coupling agent in polypropylene/glass‐fiber composites to improve the interaction of the interfacial regions. Polypropylene reinforced with 30% by weight of short glass fibers was injection‐molded and the mechan...

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Bibliographic Details
Published in:Journal of applied polymer science 1999-03, Vol.71 (10), p.1537-1542
Main Authors: Qiu, Wulin, Mai, Kancheng, Zeng, Hanmin
Format: Article
Language:English
Subjects:
Applied sciences
composite
Exact sciences and technology
glass fiber
macromolecular coupling agent
Mechanical properties
Physical properties
Polymer industry, paints, wood
polypropylene
Properties and testing
silane-grafted polypropylene
Technology of polymers
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Summary:Silane‐grafted polypropylene manufactured by a reactive grafting process was used as the coupling agent in polypropylene/glass‐fiber composites to improve the interaction of the interfacial regions. Polypropylene reinforced with 30% by weight of short glass fibers was injection‐molded and the mechanical behaviors were investigated. The results indicate that the mechanical properties (tensile strength, tensile modulus, flexural strength, flexural modulus, and Izod impact strength) of the composite increased remarkably as compared with the noncoupled glass fiber/polypropylene. SEM of the fracture surfaces of the coupled composites shows a good adhesion at the fiber/matrix interface: The fibers are coated with matrix polymer, and a matrix transition region exists near the fibers. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 71: 1537–1542, 1999
ISSN:0021-8995
1097-4628
DOI:10.1002/(SICI)1097-4628(19990307)71:10<1537::AID-APP1>3.0.CO;2-E