Characterization of a thermoforming composite material made from hemp fibers and polypropylene

Ciupan, Emilia; Lăzărescu, Lucian; Filip, Ioan; Ciupan, Cornel; Campean, Emilia; Cionca, Ioan; Pop, Emanuela

doi:10.1051/matecconf/201713708003

Cited by 7 publications

(7 citation statements)

References 4 publications

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“…Studies regarding the properties and applications of composite materials obtained using hemp fibres as reinforcing agents and various matrices, such as polyethylene [ 23 , 24 , 25 ], cement [ 26 , 27 ], polyurethane [ 28 ], polylactic acid [ 29 ] and polypropylene [ 30 , 31 , 32 , 33 , 34 , 35 , 36 ], are presented in the literature. Different authors have highlighted compression molding, extrusion, and injection molding as technologies suitable for processing the composites [ 37 , 38 , 39 , 40 , 41 , 42 ].…”

Section: Introductionmentioning

confidence: 99%

Characterisation of Hemp Fibres Reinforced Composites Using Thermoplastic Polymers as Matrices

Stelea

Filip²,

Lisă

et al. 2022

Polymers

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Hemp fibres used as a reinforcing agent and three polymeric matrices (polypropylene, bicomponent, recycled polyester) were used to obtain composite materials by needle punching and heat pressing. The influence of the hemp/matrix ratio and the nature of the matrix on the properties of the composites were analysed. The obtained composites were characterised by physical–mechanical indices, thermal analysis (thermogravimetry (TG), differential thermogravimetry (DTG) and Differential Scanning Calorimetry (DSC)), Fourier Transform Infrared Spectroscopy (FTIR-ATR) analysis, Scanning Electron Microscopy (SEM) and Chromatic measurements. The mechanical properties of composites are influenced by both the hemp/matrix ratio and the nature of the matrix. The thermal stability of composites decreased as the amount of hemp increased (for the same mass losses, the decomposition temperature decreased significantly for composites containing a quantity of hemp greater than 50%). Regarding the nature of the matrix, for the same mass loss, the highest decomposition temperature was presented by the composites containing recycled polyester as matrix, and the lowest one was presented by composites containing polypropylene fibres as matrix. The FTIR and SEM analyses highlight the changes that occurred in the structure of the composite, changes determined both by the amount of hemp in the composite and by the nature of the matrix.

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Section: Introductionmentioning

confidence: 99%

Characterisation of Hemp Fibres Reinforced Composites Using Thermoplastic Polymers as Matrices

Stelea

Filip²,

Lisă

et al. 2022

Polymers

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“…The Zwick/Roell Z150 machine was used to perform the tensile tests. The following machine parameters were used [1]:…”

Section: Planning Of the Measurement Experimentsmentioning

confidence: 99%

“…The results are presented in Table III. The input data were chosen so as to form certain groups:  Group 1: inputs that have the layers oriented the same (1 and 2), and the tensile forces opposedpairs of rows (1,16), (3,17), (5,18), (30,35);  Group 2: inputs that have the same values as some of the training data -(1,0), (1,45), (1,90), (2,0), (2,45), (2,90);  Group 3: input pairs that have their layers oriented the same (1 or 2), and the traction forces acting on directions symmetrical to the direction of the training forcepairs of rows (1,4), (6,9), (11,14), (20,23), (25,28), (30,33);  Group 4: the rest of the data.…”

Section: Data Used In the Validation Phase Of The Annmentioning

confidence: 99%

Determining the Mechanical Properties of a New Composite Material using Artificial Neural Networks

Ciupan¹,

Ciupan²,

Jucan³

2018

IJETT

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The paper studies the possibility of using artificial neural networks (ANN) to determine certain mechanical properties of a new composite material. This new material is obtained by a mixture of hemp and polypropylene fibres. The material was developed for the industry of upholstered furniture. Specifically, it is intended for the making of elements of the support structure of some upholstered goods (chairs, armchairs, sofa sides) with the objective of replacing wood. The paper aims to calculate the following mechanical properties: maximum tensile strength and maximum elongation.

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“…The mechanical properties of the composite material created by Marbor were studied in view of its appropriate description [22].…”

mentioning

confidence: 99%

“…The stress-strain curves and the calculation of the characteristic sizes (Figure 4) were completed using the program of the machine. The mechanical parameters of the composite material that has 50% hemp fiber and 50% polypropylene are shown in Table 3 [22]. Table 3.…”

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confidence: 99%

Opportunities of Sustainable Development of the Industry of Upholstered Furniture in Romania. A Case Study

Ciupan

Câmpean

et al. 2018

Sustainability

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Wood is used as a raw material in various industries, including the production of furniture, which puts pressure on the exploitation of the forests and the continuous reduction of their surfaces, with undesirable effects on the environment. The paper provides a way of sustainably manufacturing furniture by replacing wood with composite materials based on natural fibers obtained from fast-growing renewable crops (hemp, willow, flax, etc.) and at the same time a method of assessing the forest areas which can be saved from cutting. The method’s algorithm is based on the estimation of forest area that ensures the annual consumption of wood for the production of furniture, both in the conventional production of furniture and in the unconventional one, where part of the products is made of composites. The agricultural areas required to be cultivated with technical plants to provide the natural fibers necessary for the wood replacement composite were also determined. The case study, based on the data of an upholstered furniture company, shows that replacing only part of the wood for the production of furniture can save about 3000 hectares of beech forests per year and the necessary plant fibers can be obtained from a surface area about 10 to 100 times smaller.

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Characterization of a thermoforming composite material made from hemp fibers and polypropylene

Cited by 7 publications

References 4 publications

Characterisation of Hemp Fibres Reinforced Composites Using Thermoplastic Polymers as Matrices

Characterisation of Hemp Fibres Reinforced Composites Using Thermoplastic Polymers as Matrices

Determining the Mechanical Properties of a New Composite Material using Artificial Neural Networks

Opportunities of Sustainable Development of the Industry of Upholstered Furniture in Romania. A Case Study

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