Woven Structures from Natural Fibres for Reinforcing Composites

Aina Bernava, Maris Manins, Guntis Strazds

Abstract


The increase of production of woven structures from natural fibres for reinforced composites can be noticed in different sectors of economy. This can be explained by limited sources of raw materials and different environmental issues, as well as European Union guidelines for car manufacture [4]. This research produced 2D textile structures of hemp yarn and polypropylene yarn and tested the impact of added glass fibre yarn on the mechanical properties of the woven structures and the composites produced from them. The woven structures were manufactured using hand looms or industrial looms (CТБ-175) using one layer technique. The mechanical testing of the reinforcements showed that the parameters of the looms had significant impact on the properties of the reinforcements. However, the desired improvement of strength by adding glass fibre to the fabric was not achieved. The one, two, three and four layer composites were produced in a hydraulic press using reinforcements woven from hemp yarn and polypropylene yarn. The mechanical testing of composites showed that the tensile strength of the composites and the tensile stress at maximum load depends on number of the reinforcement layers, but the tensile extension of the composites and the modulus of elasticity are not closely related to the number of reinforcement layers, but rather on elasticity of yarn used in weaving. Swelling of composites in water was detected.


Keywords:

Natural fibre, woven reinforcement, hemp yarns, flax yarns.

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References


Singh A., Vishvendra M.S., Study of Mechanical Properties of Hybrid Natural Fiber Composites. A Thesis for degree of Bachelor of Technology In Mechanical Engineering, Department of Mechanical Engineering National Institute of Technology Rourkela, 2011.

Westman M.P., Fifield L.S., Kafentzis T.A., Laddha S.G., Simmons K.L., Natural Fiber Composites: A Review, Pacific Northwest National Laboratory, 2010. http://dx.doi.org/10.2172/989448

Joshi S.V., Drzal L.T., Mohanty A.K., Arora S., Are natural fiber composites environmentally superior to glass fiber reinforced composites? Comp.Part A, vol. 35, 2004, pp. 371–376. http://dx.doi.org/10.1016/j.compositesa.2003.09.016

Holbery J., Houston D., Natural-Fiber-Reinforced Polymer Composites in Automotive Applications, Materials, Design and Manufactoring for Lightweight Verhicles, Woodhed Publishing Ltd, 2010, pp. 235–306.

Carus M. World-wide Market Data on Hemp and Other Bast Fibres, Presentation of 11th EIHA Conference Wesseling, 21.05 2014, Rewiev 19, 06. 2014.

Ramakrisha M., Kurmar V., Singh Y.N., Recent Development in Natural Fibre reinforced Polypropylene composites, Journal of Reinforced Plastics and Composites, vol. 28, 2009, pp. 1169–1189. http://dx.doi.org/10.1177/0731684407087759

Shahzad A., Isaac D.H. and Alston S.M., Mechanical Properties of Hemp Fibre Composites, http://compositesuk.co.uk/ Rewiev 07.10. 2014.

Jamrichova Z., Akova E., Mechanical Testing of Natural Fibre Composites for Automotive Industry, University Review 2013, vol. 7,

no. 3, 20–25.




DOI: 10.7250/msac.2015.005