Study on Preparation and Properties of Ramie Fiber Reinforced Composites

Abstract

Ramie fibres were surface treated in order to enhance the interfacial interaction between ramie natural fibres and vinyl resin matrix. The fibres are exposed to three different treatment ways in this paper. The surface topography and binding force influenced by the treatments were characterized by contact angle and mechanical property. Single fibre pull-out tests combined with SEM characterization of the fracture surfaces were used to identify the interfacial strengths and to reveal the mechanisms of failure.

A Review of Cellulosic Fibre Surface Modification Techniques - The Case of Ramie

“…In similar investigations, CNT grafted fibre composites with 0.7 weight % CNT showed a 38.17% increase in flexural strength [67]. Combined alkali, silane treatment, and CNT grafting flexural strength [62]. Improved interfacial bonding increases flexural strength.…”

“…Hui et al found that ramie fibre-reinforced vinyl resin composites' tensile strength increased after alkali and silane treatments of the fibre, except for NaIO4-treated composites. The tensile strength of silane (KH570) treated ramie fibre-reinforced vinyl resin composite increased by 26.46% https://doi.org/10.31881/TLR.2024.069 [62]. Dilfi KF.…”

“…Alkalihttps://doi.org/10.31881/TLR.2024.069 treated fibre composites resulted in an improvement of 4.89% in flexural strength [67]. According to Hui et al, the flexural strength of silane(KH550) treated ramie fibre-reinforced vinyl resin composites increased by 57.97% [62]. In a similar investigation, silane-treated ramie fibre-reinforced epoxy composites exhibited an increase of 19.34% in flexural strength [67] which further confirmed that in addition to alkali treatment silane coupling agent modification has a good effect.…”

Flame-Retarding Modification for Ramie/Benzoxazine Laminates and the Mechanism Study

“…13 Therefore, natural materials including cellulose-rich fibers extracted from natural fibers and their polymer composites have regained interest in the last few decades, because of their low cost, low density, good mechanical properties and ample supply of fibers from renewable resources. 14 Ramie fiber, which comes from the phloem tissue of the plant known as "china grass", is one of the oldest textile fibers. 15 It has a significantly smaller diameter (10−60 μm) and consequently a higher aspect ratio than sisal fiber (200−300 μm in diameter) of the same length.…”

“…Nevertheless, increasing pressure from environmental activists, preservation of natural resources and attended stringency of laws passed by developed countries leads to the invention and development of natural materials with a focus on renewable raw materials . Therefore, natural materials including cellulose-rich fibers extracted from natural fibers and their polymer composites have regained interest in the last few decades, because of their low cost, low density, good mechanical properties and ample supply of fibers from renewable resources . Ramie fiber, which comes from the phloem tissue of the plant known as “china grass”, is one of the oldest textile fibers .…”