such as lower strength and increased temperature sensitivity of polymer fibres and much higher density of metal fibres. There is hence a strong need for new ideas on how to improve the failure strain of fibre-reinforced composites. The basic question is whether a brittle material can be made ductile through intelligent design..
Self-reinforced polymer composites are gaining increasing interest due to their higher ductility compared to traditional glass and carbon fibre composites. Here we consider a class of PET composites comprising woven PET fibres in a PET matrix. While there is a significant literature on the development of these materials..
Apr 15, 2016 . However, no literature is available on the notch sensitivity of self-reinforced polymer composites. . (up to 142%) and high breaking strength retention (up to 81%) due to the superior ductile nature of the srrPETs, which induces plastic yielding near the hole thereby reducing the stress concentration effect
On the other hand self-reinforced polymer composites (SRPC) seem to be a viable alternative to GF-PP composites, where the matrix and the reinforcement are from the same polymer family thereby easy . ductility and the forming parameters of the material are very important to manufacture a good quality product
The objective at first was to self-reinforce fibers melt spun using this polymer through hot compaction, which also required additional processing of the melt spun . As a result, in Chapter 4, an additional polymer, poly(xi-caprolactone) (PCL), was added to improve the ductility of the composite, and this incorporation was..
Penetration impact resistance is one of the key advantages of self-reinforced composites. This is typically measured using the same setup as for brittle fibre . In conclusions, the sample dimensions of ductile fibre composites should be . The mechanical properties of polymers can also be increased by inducing molecular
composites. In a patented process, high-modulus polypropylene tapes are compacted to form a self- reinforced, thermoformable polypropylene sheet. The recently commercialized material . This self-reinforced, or single polymer, composite is formed by . PP reinforcement is always ductile and cannot fracture. Downstream..
the composite more brittle compared to neat polymer. By die-ding the brittleness of the composite can be eliminated. Not only the bioactivity and controlled degradation rate of composite but also structure and mechanical properties achieved during die-ding make the self-reinforced bioactive glass- bioabsorbable..
Apr 23, 2017 . While conventional fiber-reinforced polymer composites offer high strength and stiffness, they lack ductility and the ability to absorb energy before failure. This work investigates hybrid fiber composites for structural applications comprised of polymer, steel fiber, and glass fibers to address this shortcoming
metal-reinforced, metal hybrid and self-reinforced composites. [1,3,2,46] and braided laminates [7,8] to achieve ductility or pseudo-ductility. The approaches that incorporate steel fibres. [1,3] and thin steel layers  in a metal-hybrid polymer composite, take advantage of the inherent ductility of the metal to provide the
Shape memory polymer composites are high-performance composites, formulated using fibre or fabric reinforcement and shape memory polymer resin as the matrix. Since a shape memory polymer resin is used as the matrix, these composites have the ability to be easily manipulated into various configurations when they..
Abstract. Creep deformation of polymers results from their inherent viscoelastic nature that changes polymer's shape with time. . Keywords: polymer composites, self-reinforced PET composites, creep behavior, time-temperature superposition principle. eXPRESS . srrPET composites exhibited superior ductile behav-
Jul 9, 1996 . A brief overview of the novel technology of self-reinforced composites based on liquid crystalline polymer (LCP)/thermoplastic and LCP/LCP blends is presented. Various aspects of the composite technology are considered including mixing, transition temperatures, factors governing LCP fibrillations,..
Introduction. The negative environmental impact of the steadily increasing use of plastic and composite materials requires the development of new combinations of materials, possibly with improved properties, but with reduced environmental harm. Consequently, the development of recycling-friendly thermoplas-
May 5, 2016 . Here we show that it is possible exploit this design in order to create self-healing structural composites by using thin supramolecular polymer interfaces . In the latter case, the encapsulation can act as reinforcement and these materials can reach high strengths but are not able to heal repeatedly as the..
Dec 20, 2017 . Self-reinforced composites (SRCs), in which the reinforcement and matrix are composed of the same polymer, have been increasingly used due to their high impact resistance, high ductility and excellent processability [1,2]. At the same time, their application has been limited to non-structural applications..
properties of the self-reinforced polypropylene composites and compared to non-reinforced counterparts of identical additive contents. . Self-reinforced polymer composites (SRPCs) are composed of similar or identical polymeric materials for both .. The ductility factor was calculated as the ratio of the total impact energy..
Adhesion enhancement and damage protection for carbon fiber-reinforced polymer (CFRP) composites via silica particle coating. June 2018. Kyungtae Kim | Yong . The brittle-to-ductile transition in tensile and impact behavior of hybrid carbon fibre/self-reinforced polypropylene composites. June 2018. Marina Selezneva..
22.214.171.124 Fabrication methods for self-reinforced polymer composites .... 21. 126.96.36.199 Quality assessment of self-reinforced polymer composites ..... 25 ... dipentaerythritol. Dr ductility factor. DSC differential scanning calorimetry. DTG derivative thermogram. DTGS deuterated triglycine sulfate. E. Young's modulus. Eb
In contrast with carbon fibre composites, self-reinforced (or all-polymer) composites have an excellent toughness, but a relatively low stiffness and strength. They consist of . At an optimal fraction however, the ductility and impact resistance of SRPP can be maintained, while still achieving a substantial increase in stiffness..