scholarly journals Polypropylene composites filled with glass microspheres and basalt fiber

2020 ◽  
pp. 72-76
Author(s):  
Nguen Kong Tinh ◽  
N. M. Chalaya ◽  
V. S. Osipchik
Keyword(s):  
Elastic Modulus ◽  
Impact Strength ◽  
Basalt Fiber ◽  
Tensile Yield Strength ◽  
Technological Properties ◽  
Basalt Fibers ◽  
Glass Microspheres ◽  
Polypropylene Composites ◽  
Melt Index ◽  
The Impact

The physicomechanical and technological properties of polypropylene-based composites filled with basalt fibers (BF) and glass microspheres (GM) are studied. It is shown that the introduction of short BFs and glass microspheres into PPs while ensuring good “fiber-matrix” adhesion by adding maleic anhydride-grafted polypropylene (MAPP) leads to a significant increase in the elastic modulus and tensile yield strength. The impact strength of composites improves with increasing fiber content in the presence of GM. The melt index and thermomechanical stability of the developed composites increase.

Studies on Mechanical Properties of Discontinuous Glass Fiber/Continuous Glass Mat/Polypropylene Composite

2002 ◽  
Vol 10 (4) ◽  
pp. 299-306 ◽  
Author(s):  
Xiaodong Zhou ◽  
Qunfang Lin ◽  
Gance Dai
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Glass Fiber ◽  
Matrix Resin ◽  
Continuous Glass ◽  
Polypropylene Composites ◽  
Melt Index ◽  
Discontinuous Fiber ◽  
Glass Mat ◽  
The Impact

The mechanical properties of discontinuous glass fiber/continuous glass fiber mat/polypropylene composites were investigated. The mechanical properties increased with increasing areal weight of the continuous glass mat, whereas the suitable content of discontinuous fiber was also depended on the mat areal weight. The impact strength of composites initially decreased due to the addition of discontinuous glass fiber, but increased when the content of discontinuous glass fiber further increased. Comparisons between the 4 mm discontinuous fiber length and the 12 mm fiber showed that the longer discontinuous glass fiber was advantageous to the mechanical properties of composite system. The modification of the interfacial adhesion between reinforcements and matrix resin by using functionalized polypropylene played a significant role in improving the mechanical properties of the composites. But the impact strength decreased above 5% of MA-g-PP level (with respect to matrix resin). It was also found that using a matrix resin with a high melt index was beneficial impregnation with the mechanical properties improving accordingly.

Effects of microcrystalline cellulose on the mechanical properties of low-density polyethylene composites

2018 ◽  
Vol 32 (3) ◽  
pp. 297-311 ◽  
Author(s):  
Yousef Ahmad Mubarak ◽  
Raghda Talal Abdulsamad
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Impact Strength ◽  
Tensile Properties ◽  
Microcrystalline Cellulose ◽  
Weight Fraction ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Ldpe Composites ◽  
The Impact

This work was intended to provide an understanding of the effect of microcrystalline cellulose (MCC) on the mechanical properties of low-density polyethylene (LDPE). The impact resistance and the tensile properties of low-density LDPE/MCC composites were investigated. The weight fraction of MCC was varied at (0, 0.5, 1, 2.5, 5, 10, 20, and 30 wt%). The obtained blends were then used to prepare the required tensile and impact testing samples by hot compression molding technique. It has been found that MCC has a strong influence on the mechanical properties of LDPE. At a low MCC weight fraction, there was a little improvement in the ultimate strength, fracture stress, and elongation at break, but at a high MCC weight fraction, the tensile properties were deteriorated and reduced significantly. The addition of 1 wt% MCC to LDPE enhanced the mentioned properties by 10, 25, and 6%, respectively. While at 30 wt% MCC, these properties were lowered by 36, 25, and 96%. The elastic modulus of LDPE composites was improved on all MCC weight fractions used in the study, at 20 wt% MCC, an increase in the elastic modulus by 12 folds was achieved. On the other hand and compared with the impact strength of pure LDPE, the addition of MCC particles enhanced the impact strength, the highest value obtained was for LDPE composites filled with 10 wt% MCC where the impact strength enhanced by two folds.

Modelling the Impact Strength of Polymeric Materials

2017 ◽  
Vol 44 (10) ◽  
pp. 27-32 ◽  
Author(s):  
G.A. Lushcheikin
Keyword(s):  
Elastic Modulus ◽  
Impact Strength ◽  
Theoretical Analysis ◽  
Polymeric Materials ◽  
Double Support ◽  
Reinforcing Fillers ◽  
Impact Bending ◽  
The Impact

A theoretical analysis of the process of determining the impact strength under double-support impact bending (the Charpy notched impact strength), aN, is carried out, on the basis of which analytical dependences of aN on the elastic modulus, the parameters of the relaxation mobility of the polymer, the temperature, and the content of reinforcing fillers are proposed. The results of experiments confirm the correctness of the proposed methods for calculating aN.

scholarly journals Predicting of Impact Strength and Elastic Modulus of Polypropylene/EPDM/Graphene/Glass Fiber Nanocomposites by Response Surface Methodology

2021 ◽  
Vol 15 (2) ◽  
pp. 169-177
Author(s):  
Faramarz Ashenai Ghasemi ◽  
Ismail Ghasemi ◽  
Sajjad Daneahpayeh ◽  
Meysam Nouri Niyaraki
Keyword(s):  
Elastic Modulus ◽  
Impact Strength ◽  
Glass Fiber ◽  
Response Surface ◽  
Hybrid Nanocomposites ◽  
Experimental Planning ◽  
Surface Method ◽  
Maximum Value ◽  
Graphene Glass ◽  
The Impact

In the present manuscript, Response Surface Method (RSM) of the experimental planning was applied to optimize the mechanical properties such as impact strength and elastic modulus of polypropylene (PP)/ethylene propylene dine monomer (EPDM) /grapheme Nano sheets (GnPs)/ glass fiber hybrid nanocomposites. According to a Box-Behnken method, three levels of parameters were used for EPDM (5, 10 and 15 wt.%), GnPs (0, 1 and 2 wt.%) and glass fiber (10, 20 and 30 wt.%). In addition, specimens were studied using differential scanning calorimeter (DSC) and scanning electron microscopy (SEM) to see their morphology and thermal properties. It was discovered that GnPs, glass fiber and EPDM played an important role in impact strength and elastic modulus of the nanocomposites. To reach the maximum value of the impact strength and elastic modulus simultaneously, the best amount of additives was about 0.82 wt.% of GnPs, 30 wt.% of glass fiber and 15 wt.% of EPDM. The gained R2 values and the corresponding diagrams showed a desirable accordance (above 0.93 for all the responses) with the experiments and those guessed by the RSM.

scholarly journals An Experimental Study on the Effect of Nanomaterials and Fibers on the Mechanical Properties of Polymer Composites

Buildings ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 7
Author(s):  
Chanachai Thongchom ◽  
Nima Refahati ◽  
Pouyan Roodgar Saffari ◽  
Peyman Roudgar Saffari ◽  
Meysam Nouri Niyaraki ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Impact Strength ◽  
Modulus Of Elasticity ◽  
Graphene Nanosheets ◽  
Charpy Impact ◽  
Tensile Tests ◽  
Basalt Fibers ◽  
Low Weight ◽  
Internal Mixer ◽  
The Impact

This study aims to explore the tensile and impact properties (tensile strength, modulus of elasticity, and impact strength) of polypropylene (PP)-based nanocomposites reinforced with graphene nanosheets, nanoclay, and basalt fibers. The response surface methodology (RSM) with Box–Behnken design (BBD) was adopted as the experimental design. An internal mixer was used to prepare compounds consisting of 0, 0.75 and 1.5 wt% graphene nanosheets, 0, 10 and 20 wt% basalt fibers, and 0, 3 and 6 wt% nanoclay. The samples were prepared by a hot press machine for mechanical testing. The tensile tests were run to determine the tensile strength, and modulus of elasticity, and the Charpy impact tests were performed to assess the impact strength. It was found that the addition of basalt increased the tensile strength, modulus of elasticity, and impact strength by 32%, 64% and 18%, respectively. Also, the incorporation of the low-weight graphene nanosheets increased the tensile and impact strength by 15% and 20%, respectively, Adding graphene nanosheets generally improved the modulus of elasticity by 66%. Similarly, the addition of nanoclay improved the tensile strength by 17% and increased the modulus of elasticity by 59%, but further addition of it decreased the impact strength by 19%. The values obtained by this experiment for the mechanical property were roughly close to the data yielded from desirability optimization.

scholarly journals Impact Properties and Water Uptake Behavior of Old Newspaper Recycled Fibers-Reinforced Polypropylene Composites

Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1079 ◽  
Author(s):  
David Hernández-Díaz ◽  
Ricardo Villar-Ribera ◽  
Francesc X. Espinach ◽  
Fernando Julián ◽  
Vicente Hernández-Abad ◽  
...  
Keyword(s):  
Impact Strength ◽  
Glass Fiber ◽  
Water Uptake ◽  
Coupling Agent ◽  
Material Selection ◽  
Fiber Reinforced ◽  
Polypropylene Composites ◽  
Lignocellulosic Fibers ◽  
Recycled Fibers ◽  
The Impact

Natural fiber-reinforced thermoplastic composites can be an alternative to mineral fiber-based composites, especially when economic and environment concerns are included under the material selection criteria. In recent years, the literature has shown how lignocellulosic fiber-reinforced composites can be used for a variety of applications. Nonetheless, the impact strength and the water uptake behavior of such materials have been seen as drawbacks. In this work, the impact strength and the water uptake of composites made of polypropylene reinforced with fibers from recycled newspaper have been researched. The results show how the impact strength decreases with the percentage of reinforcement in a similar manner to that of glass fiber-reinforced polypropylene composites as a result of adding a fragile phase to the material. It was found that the water uptake increased with the increasing percentages of lignocellulosic fibers due to the hydrophilic nature of such reinforcements. The diffusion behavior was found to be Fickian. A maleic anhydride was added as a coupling agent in order to increase the strength of the interface between the matrix and the reinforcements. It was found that the presence of such a coupling agent increased the impact strength of the composites and decreased the water uptake. Impact strengths of 21.3 kJ/m3 were obtained for a coupled composite with 30 wt % reinforcement contents, which is a value higher than that obtained for glass fiber-based materials. The obtained composites reinforced with recycled fibers showed competitive impact strength and water uptake behaviors in comparison with materials reinforced with raw lignocellulosic fibers. The article increases the knowledge on newspaper fiber-reinforced polyolefin composite properties, showing the competitiveness of waste-based materials.

Effect of Tetradecyl Methyl Acrylate-Maleic Anhydride Copolymer on the Mechanical Properties of Glass Mat Reinforced Polypropylene Composites

2005 ◽  
Vol 13 (4) ◽  
pp. 403-413
Author(s):  
Shanhua Zhou ◽  
Zhiyu Xu ◽  
Xin Liu ◽  
Yan Gao ◽  
Qingzhi Dong
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Impact Strength ◽  
Flexural Strength ◽  
Polypropylene Composites ◽  
Monomer Ratio ◽  
Maleic Anhydride Copolymer ◽  
Glass Mat ◽  
The Impact ◽  
Interfacial Modifier

A new interfacial modifier made of tetradecyl methylacrylate-maleic anhydride copolymer (TMA- co-MAH) was prepared and characterized. The effect of reaction time and monomer ratio on the gross conversion and MAH content in the copolymer was studied. When the glass mat was treated with TMA- co-MAH solutions and compounded with PP, the MAH group of the interfacial modifier formed strong interactions with the glass mat and the long side chain of the interfacial modifier entangled firmly with the polypropylene matrix. In comparison with maleated polyolefins, the higher MAH content of the TMA- co-MAH resulted in better interfacial adhesion between the PP and the glass mat resulting in increased flexural strength and modulus, and the ductility of the TMA- co-MAH introduced a ductile interlayer into the interface of the glass mat reinforced polypropylene composites (GMT-PPs) to achieve higher impact strength. Therefore the mechanical properties of composites treated with TMA- co-MAH were all superior to those of GMT-PPs treated with maleic anhydride grafted polypropylene (PP- g-MAH) solutions when they were used at the same level. The effects of anhydride content, concentration of copolymer and compounding time on the mechanical property of GMT-PPs were investigated. With the optimal monomer ratio, MAH:TMA = 7:3, a 3% copolymer solution and a compounding time of 5 min, the impact strength, flexural strength and modulus of GMT-PPs treated with the new interfacial modifier were all improved significantly compared with composites treated with 0.3% PP- g-MAH solution.

scholarly journals Effects of coating with different ceromers on the impact strength, transverse strength and elastic modulus of polymethyl methacrylate

2015 ◽  
Vol 34 (3) ◽  
pp. 379-387 ◽  
Author(s):  
Esma Başak GÜL ◽  
Mustafa Hayati ATALA ◽  
Bekir EŞER ◽  
Nilüfer Tülin POLAT ◽  
Meltem ASİLTÜRK ◽  
...  
Keyword(s):  
Elastic Modulus ◽  
Impact Strength ◽  
Polymethyl Methacrylate ◽  
Transverse Strength ◽  
The Impact

The Effect of Hyperdispersant on the Mechanical Properties and Morphology of Sisal Fiber/Polypropylene Composites

2011 ◽  
Vol 250-253 ◽  
pp. 839-842
Author(s):  
Chun He Yu ◽  
Shao Rong Lu ◽  
Zhi You Yang ◽  
Kuo Liu ◽  
Xin Fan
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Flexural Strength ◽  
Water Solubility ◽  
Experimental Results ◽  
Sisal Fiber ◽  
Polypropylene Composites ◽  
Pp Composites ◽  
Flexible Segment ◽  
The Impact

In order to enhance the interfacial interactions between the sisal fiber (SF) and the polypropylene (PP) matrix, a water-solubility hyperdispersant which has amphipathic structure and flexible segment was used. Experimental results revealed that when the content of hyperdispersant is 5 percent, the impact strength of the composites was 27.4 kJ·m-2 and the flexural strength of SF/PP composites was 40.1 MPa, which was 64 and 34 wt% higher than that of unmodified systems, respectively. Meanwhile, the crystallinity of the composites also leads to an increase.

scholarly journals Impact Strength of Hybrid Epoxy–Basalt Composites Modified with Mineral and Natural Fillers

2021 ◽  
Vol 5 (3) ◽  
pp. 56
Author(s):  
Danuta Matykiewicz ◽  
Mateusz Barczewski ◽  
Marwan Suleiman Mousa ◽  
Mavinkere Rangappa Sanjay ◽  
Suchart Siengchin
Keyword(s):  
Impact Strength ◽  
Epoxy Resin ◽  
Epoxy Matrix ◽  
Basalt Fiber ◽  
Fiber Reinforced Composites ◽  
Maximum Force ◽  
Reinforced Composites ◽  
The Impact ◽  
Natural Fillers ◽  
Natural Additives

The aim of this study was to evaluate the influence of mineral and natural additives (2.5; 5; 10 wt.%) on the impact strength of epoxy–basalt composites. Three types of filler were used to modify the epoxy matrix: basalt powder (BP), basalt microfiber (BF) and sunflower husk ash (SA). The impact strength and the maximum force were determined for the materials. The results of the conducted research confirm that the addition of a powder fillers to the epoxy matrix of basalt fiber reinforced composites is an effective method of improving their impact characteristic. The introduction of fillers to epoxy resin allowed to improve the impact properties of all tested groups of laminates. Moreover, in all cases, the introduction of the filler increased the maximum force needed to damage the composite sample and their hardness. For the modified materials, an increase in impact strength was recorded, respectively: by 44% for composites with BP, by 7.5% for composites with BF and by 2.5% for composites with SA.

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