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Article: Mechanical properties and structural characteristics of dynamically photocrosslinked PP/EPDM blends*.
- Article from:
- Polymer Engineering and Science
- Article date:
- November 1, 2003
- Author:
CopyrightCOPYRIGHT 2003 Society of Plastics Engineers, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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INTRODUCTION
Polypropylene (PP) as a thermoplastic is widely used in many fields, such as building materials, furniture, automobiles, the toy industry, and so on. However, its main disadvantage is its poor impact resistance, especially at low temperatures. Therefore, PP is usually modified with elastomers such as ethylene-propylene-diene terpolymer (EPDM) to improve its impact strength (1-4). In recent years, many researchers have studied dynamic vulcanization of PP/EPDM blends by peroxide or phenolic systems (5-9) in order to increase the impact strength, at low temperatures. But these methods have some disadvantages, such as the short half-life of the thermal ...