Interfacial and Mechanical Properties of Continuous Fiber-Reinforced PP via Pre Impregnated Winding

Abstract

In this paper, a continuous glass fiber-reinforced polypropylene prepreg was prepared by fiber treatment with a silane coupling agent and MAH-g-PP resin. Continuous glass fiber-reinforced polypropylene sheets were made from prepreg and PP mats by hot-pressing; they displayed exceptional performance. This paper studies the effects of maleic anhydride grafting on the polypropylene crystallinity and MAH-g-PP content in the prepreg, and the mechanical properties of the composites. The results showed that modifying PP with maleic anhydride decreased the tacticity of the polypropylene molecular chain, which reduced the crystallinity and melting point. An excellent interface formed between the polypropylene and fiber after the glass fiber was treated with a silane coupling agent and MAH-g-PP resin. The mechanical properties of the polymer materials displayed more favorable properties as MAH-g-PP content increased; the ideal MAH-g-PP content was 50%.

Study on the mechanical properties of ramie fiber/polypropylene composites prepared by hot pressing after the carding machine mixing

“…The modification of maleic anhydride grafted polypropylene (MAPP) [22][23][24] and silane-treated NF has been studied a lot, but the benefits of the combined use of the two have only been reported in a few papers, 25 most of which are related to PP/GF composites. 26,27 As of now, the application of plant-based fibers in plastics is mostly based on powdered filler phases, 28 which are blended with thermoplastic polymers using refiners, 29 extruders, 30 and other processing methods. Although this blending method can mix the components sufficiently and is suitable for large-scale production, the structure of the plant-based fibers in the resulting samples is severely damaged and the effective length of the fibers was drastically reduced, which caused a weakening of the reinforcing phase effect (Figure S1).…”

“…The modification of maleic anhydride grafted polypropylene (MAPP) 22–24 and silane‐treated NF has been studied a lot, but the benefits of the combined use of the two have only been reported in a few papers, 25 most of which are related to PP/GF composites 26,27 . As of now, the application of plant‐based fibers in plastics is mostly based on powdered filler phases, 28 which are blended with thermoplastic polymers using refiners, 29 extruders, 30 and other processing methods.…”

Review of research on basalt fibers and basalt fiber-reinforced composites in China (I): Physicochemical and mechanical properties

“…Basalt fibers (BFs) are formed by drawing molten basalt (one of the most widely distributed volcanic rocks on the earth, for which the primitive magma originates from the upper mantle 1 ) at high temperatures ranging from 1450 to 1500°C. Since BFs have excellent mechanical and physical properties, 2–10 such as excellent acid and alkali corrosion resistance, 11–14 high-temperature resistance, 15 and good insulation characteristics against electromagnetic radiation, 16 heat, and sound, 17,18 most BF-reinforced composites, such as BF-reinforced concrete (BFRC), 19 asphalt, 20 and resin, 21 exhibit excellent properties. These materials can be widely used for fire protection, 22,23 environmental protection, 24,25 medical devices 26–29 vehicle and ship manufacturing, 30,31 construction, 8,32–34 pipelines 35 and other fields.…”

Studies on changes in the temperature field and recrystallization properties of glass fiber reinforced polypropylene composite strip winding process

“…Since the middle of the 20th century, thermoplastic resin matrix composites have attracted wide attention from industries and researchers due to the advantages they offer, and thus have become gradually a focus of intense research specifically in the direction of high-strength glass fiber thermoplastic composites which have an enormous annual growth rate of 5%, promising a steady development. 1,2 The thermoplastic composite material has excellent impact toughness, fatigue damage resistance, and corrosion resistance; it has strong specific strength and specific stiffness; the molding speed is fast, and the production efficiency is high; the fiber prepreg tape does not need to be stored at low temperature, and has excellent welding properties. Owing to the above, thermoplastic composites have been rapidly developed in the automotive, chemical, and aerospace industries.…”