Hargitai, HRacz, I2007-01-222007-06-072007-01-222007-06-072005-09Hargitai, H and Racz, I. 2005. Development of hemp fibre - PP nonwoven composites. Proceeding of the 8th Polymers for Advanced Technologies International Symposium, Budapest, Hungary, 13-16 September 2005http://hdl.handle.net/10204/1440http://hdl.handle.net/10204/1440Non-woven mats from hemp and polypropylene fibres in various proportions were produced and hot pressed to make composite material. The effect of hemp fibre content and anisotropy in non-woven mats resulting from the carding technology were examined on the basis of the three-point bending, tensile and impact properties of the resultant composite materials. Because of the hydrophilic nature and poor dimensional stability of cellulosic fibres due to swelling, the effect of water sorption on mechanical performances was also investigated. Optimal mechanical properties were achieved in composites made from 40-50% of hemp fibre by weight. As it was expected, better mechanical properties were found in the specimens cut from the composite sheets parallel to the direction of carding. A strong decrease in three point bending properties was noticed after immersing the composite samples in distilled water for 19 days, while the impact strength increased. Double carding of raw materials resulted in a decreased anisotropy in composite material.110042 bytesapplication/pdfenCopyright: 2006 Wiley-V C H Verlag GMBHCompositesPolypropyleneRenewable resourcesStructure-property relationsConference PresentationHargitai, H., & Racz, I. (2005). Development of hemp fibre - PP nonwoven composites - Conference Paper. Polymers for Advanced Technologies International Symposium. http://hdl.handle.net/10204/1440Hargitai, H, and I Racz. "Development of hemp fibre - PP nonwoven composites - Conference Paper." (2005): http://hdl.handle.net/10204/1440Hargitai H, Racz I, Development of hemp fibre - PP nonwoven composites - Conference Paper; Polymers for Advanced Technologies International Symposium; 2005. http://hdl.handle.net/10204/1440 .TY - Conference Presentation AU - Hargitai, H AU - Racz, I AB - Non-woven mats from hemp and polypropylene fibres in various proportions were produced and hot pressed to make composite material. The effect of hemp fibre content and anisotropy in non-woven mats resulting from the carding technology were examined on the basis of the three-point bending, tensile and impact properties of the resultant composite materials. Because of the hydrophilic nature and poor dimensional stability of cellulosic fibres due to swelling, the effect of water sorption on mechanical performances was also investigated. Optimal mechanical properties were achieved in composites made from 40-50% of hemp fibre by weight. As it was expected, better mechanical properties were found in the specimens cut from the composite sheets parallel to the direction of carding. A strong decrease in three point bending properties was noticed after immersing the composite samples in distilled water for 19 days, while the impact strength increased. Double carding of raw materials resulted in a decreased anisotropy in composite material. DA - 2005-09 DB - ResearchSpace DP - CSIR KW - Composites KW - Polypropylene KW - Renewable resources KW - Structure-property relations LK - https://researchspace.csir.co.za PY - 2005 T1 - Development of hemp fibre - PP nonwoven composites - Conference Paper TI - Development of hemp fibre - PP nonwoven composites - Conference Paper UR - http://hdl.handle.net/10204/1440 ER -