Hemp Fibre Reinforced Composites

2017 ◽  
Author(s):  
Ivana Schwarzova ◽  
Nadezda Stevulova ◽  
Tomas Melichar
Keyword(s):  
Physical And Mechanical Properties ◽  
High Strength ◽  
Sustainable Construction ◽  
Component Part ◽  
Reinforced Composites ◽  
Hemp Fibre ◽  
And Performance ◽  
Water Absorbability ◽  
Industrial Hemp ◽  
Fibre Reinforced Composites

The conventional homogeneous materials can no longer effectively satisfy the growing demands on product capabilities and performance, due to the advancement in products design and materials engineering. Therefore, the fibre reinforced composites with better properties and desirable applications emerged. Natural fibres have high strength to low weight ratios and have good sound and thermal insulation properties. Combination of organic filler and inorganic matrix creates high-quality products such as fibre boards and composites. The great importance is attached to industrial hemp as source of the rapidly renewable fibres and as non-waste material. Industrial hemp fibre has great potential in composite materials reinforcement. However, improving interfacial bonding between fibres and matrix is an important factor for its using in composites. This paper deals with hemp fibre reinforced composites in civil engineering as component part of sustainable construction. Prepared lightweight composites based on original and pre-treated hemp hurds are characterized by selected physical and mechanical properties (density, thermal conductivity, water absorbability, compressive and tensile strength) in dependence on used inorganic binder (traditional Portland cement and alternative MgO-cement).

scholarly journals EFFECTS OF FILLERS ON PROPERTIES OF ONE-PART POLYURETHANE SEALANTS WITH PRESENCE OF A LATENT CURING AGENT

2019 ◽  
Vol 62 (9) ◽  
pp. 60-65
Author(s):  
Kseniya A. Timakova ◽  
Yury T. Panov
Keyword(s):  
Mechanical Properties ◽  
Relative Elongation ◽  
Physical And Mechanical Properties ◽  
High Strength ◽  
Oil Absorption ◽  
Curing Agent ◽  
Dispersed Filler ◽  
General Complex ◽  
And Performance ◽  
Filled Composite

In this study, the effects of fillers on the technological properties of polyurethane sealants and the physical and mechanical properties of air moisture curing sealants are investigated. The sequence of loading the components in the dissolver, factoring in the presence of a latent curing agent, is demonstrated. It was found that when filling within 20-80 parts weight per 100 parts weight of the pre-polymer, the general complex of physical and mechanical properties remains high. With the introduction of mineral dispersed filler, the tear strength increases, but the relative elongation at break decreases. The increase in the tensile strength occurs up to a certain limit, after which there is a decrease in the strength of the sealant. It was shown that based on the oil absorption value of the fillers, the type and the amount of a filler for the sealant can be evaluated, as oil absorption directly depends on the particle size, surface area and particle shape of the filler. It was observed that for maintaining high physical and mechanical properties of the composite and the optimum viscosity of the sealant, it is preferable to combine two kinds of fillers with different oil absorption. It was established that the application of fillers with high and low oil absorption has a positive effect on the technological and performance properties of sealants. The filler with high oil absorption contributes to the thixotropy of the sealant, while the filler with low oil absorption allows to form a more highly filled composite while preserving the high strength characteristics.

scholarly journals A Rheological Study of Fibre Reinforced Composites and The Factors That Affect Rheological Behaviour During Impregnation Process: A Review

2021 ◽  
Vol 89 (2) ◽  
pp. 167-181
Author(s):  
Nurul Zuhairah Mahmud Zuhudi ◽  
Firdaus Aqil Mohd Fadzil ◽  
Muzafar Zulkifli ◽  
Ahmad Naim Ahmad Yahaya ◽  
Nurhayati Mohd Nur ◽  
...  
Keyword(s):  
Rheological Behaviour ◽  
Newtonian Fluids ◽  
Flow Behaviour ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Impregnation Process ◽  
Rheological Study ◽  
And Performance ◽  
Fibre Reinforced Composites

Rheological behaviour is an important factor affecting the flow behaviour of a fluid and many aspects related to this, mainly in the manufacturing process of fiber reinforced composites, either for Newtonian fluids or non-Newtonian fluids. During impregnation process, the viscosity changes with temperatures and their strain rate, has influenced the resin flow behaviour during curing process. In this paper, a review on the rheological studies of fiber reinforced composites for both, synthetic and natural based fibers, respectively, are presented. In addition to that, this review paper highlighting a few research studies conducted in literature on the main factors that affecting the rheological quality and performance of the composites. The aims of this review, mainly to capture the trend ranging from the recent five years back and summarize the various studies via experimental, theoretical or modelling works. Furthermore, also aiming to provide an ideal baseline information in the selection of the methods regarding rheological study to ensure better quality of pre-preg product and fibre reinforced composites can be produced in the author’s future work.

scholarly journals Graphene-Coated Sensor Yarn for Composite Preforms

Proceedings ◽  
2020 ◽  
Vol 32 (1) ◽  
pp. 21
Author(s):  
Fernando ◽  
Ali ◽  
Tan ◽  
He
Keyword(s):  
High Strength ◽  
Textile Fibre ◽  
Reinforced Composites ◽  
Low Weight ◽  
Strength And Stiffness ◽  
Fibre Reinforced Composites

There is extensive research to demonstrate that textile fibre reinforced composites can produce high strength and stiffness at a low weight allowing them to become excellent candidates for applications requiring improved strength and lighter structures compared to their metallic counterparts. [...]

scholarly journals Fibre Reinforced Composites in Pipeline Applications: Design Issues and Current Research

2000 ◽  
Author(s):  
Fernand Ellyin ◽  
John Wolodko ◽  
David Dorling ◽  
Alan Glover ◽  
Tom Jack
Keyword(s):  
Corrosion Resistance ◽  
Composite Materials ◽  
Weight Ratio ◽  
High Strength ◽  
Attractive Alternative ◽  
Reinforced Composites ◽  
Material Behaviour ◽  
Global Behaviour ◽  
Composite Pipes ◽  
Fibre Reinforced Composites

Fibre reinforced polymeric composites used in pressure retaining structures are seen as an attractive alternative to products made from conventional materials due to their corrosion resistance and high strength-to-weight ratio. The reluctance in adopting composite materials, however, is due to a limited understanding of the material behaviour under a variety of loading and environmental conditions, and lack of qualified design methodologies. It is the purpose of this paper to address fundamental and applied issues regarding their feasibility and current limitations in pipeline applications. A review of pertinent research results with respect to the local and global behaviour in composite pipes will be discussed.

scholarly journals Effect of basalt fibre hybridisation on post-impact mechanical behaviour of hemp fibre reinforced composites

2015 ◽  
Vol 75 ◽  
pp. 54-67 ◽  
Author(s):  
Hom Nath Dhakal ◽  
Fabrizio Sarasini ◽  
Carlo Santulli ◽  
Jacopo Tirillò ◽  
Zhongyi Zhang ◽  
...  
Keyword(s):  
Mechanical Behaviour ◽  
Reinforced Composites ◽  
Basalt Fibre ◽  
Hemp Fibre ◽  
Post Impact ◽  
Fibre Reinforced Composites
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