Use of Glass Particles from Recovered LCD Screen Components as Fillers for Polyamide-6

2014 ◽  
Vol 798-799 ◽  
pp. 628-631
Author(s):  
Natalia Massaro ◽  
Douglas Morais ◽  
Samuel Marcio Toffoli ◽  
Ticiane Sanches Valera
Keyword(s):  
Electron Microscopy ◽  
Tensile Strength ◽  
Impact Strength ◽  
Polyamide 6 ◽  
Particle Sizes ◽  
Loss On Ignition ◽  
The Matrix ◽  
Izod Impact ◽  
The One ◽  
Scanning Electron

Glass from computers’ LCD monitor screens were recovered, ground and used as filler for Polyamide-6. The composites contained 10 wt% of glass particles. Two particle sizes were tested: glass particles smaller than 106 μm (ABNT#150 sieve) and smaller than 53 μm (ABNT#270 sieve). The filler was evaluated by loss on ignition and the composites by tensile strength and Izod impact strength. The morphology was characterized by scanning electron microscopy (SEM). The value of Young’s modulus of composites processed with glass particles smaller than 53 μm was higher than the one for PA-6. The properties of impact strength, tensile strength, and elongation of PA-6 were reduced with the addition of filler, and the composite containing glass particles smaller than 53 μm showed the lowest reduction in mechanical properties (about 6% in the tensile strength and about 48% in impact strength). The micrographs of fracture surfaces of tensile strength specimens showed weak adhesion particle/matrix and uniform distribution of the particles in the matrix, especially in the composite with finest particle sizes.

In Situ Polymerization Approach to Magnesium Hydroxide-Reinforced PA6 Composites

2011 ◽  
Vol 399-401 ◽  
pp. 457-460
Author(s):  
Li Li Xu ◽  
Yu Hao Deng ◽  
Ye Wang ◽  
Chang Hua Liu ◽  
Sheng Peng Liu
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Magnesium Hydroxide ◽  
In Situ Polymerization ◽  
Polyamide 6 ◽  
Elongation At Break ◽  
Izod Impact ◽  
Scanning Electron

Polyamide 6 (PA6)/magnesium hydroxide (MH) nanoparticles composites have been prepared by in situ polymerization of ε-caprolactam in the presence of pristine MH and γ-aminopropyl-triethoxysilan ( KH550 ) grafted MHs (MMH). Compared with pure PA6, the tensile strength and elongation at break of PA6/MH and PA6/MMH composites shown obvious increasement and attain maximum at loading of 3 wt% MHs. The tensile strength and elongations at break of PA6/MMH composites exhibited notably enhancement contrast with that of PA6/MH composites. Comparing with PA6/MH composites, the izod impact strength of PA6/MMH composites were also improved. Scanning electron microscopy (SEM) shown that MMH particles were homogeneous dispersed in PA6 matrix due to the surface modification of grafting KH550.

Tensile Property of the Flax/Polyester Composites after Water Treatment

2011 ◽  
Vol 194-196 ◽  
pp. 1740-1744 ◽  
Author(s):  
Qiu Hong Wang ◽  
Gu Huang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Water Treatment ◽  
Tensile Property ◽  
Unsaturated Polyester ◽  
Water Immersion ◽  
The Matrix ◽  
Polyester Composites ◽  
Scanning Electron

Flax fabric was woven and composites were produced by using the VARI technique with flax fabric as the reinforcement and unsaturated polyester as the matrix. Laminates with two, three and four layers were fabricated respectively. After saturated in the water for different durations of time (7, 14, 21 and 30 days), the tensile strength of the composites was tested. After being soaked in the water for 7, 14 and 21 days, the tensile strength of the two-layer composites was decreased. For the three and four layers specimens, the tensile strength was increased initially with water treatment for 7 and 14 days,and decreased for 21 and 30 days. Scanning electron microscopy (SEM) confirmed that it might be contributed to the thickness of the two-layer composites. The thinner specimen is easier to be damaged by the penetrated moisture owing to the delamination between the fiber and the matrix after water immersion. For the three and four layers specimens, their contradictory tensile strength suggests that the thicker specimen can delay the moisture permeation and is of better water durability.

scholarly journals Simultaneous Improvement in the Tensile and Impact Strength of Polypropylene Reinforced by Graphene

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Li Juan
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Fracture Surface ◽  
Impact Strength ◽  
Melt Blending ◽  
Elongation At Break ◽  
Morphological Behavior ◽  
Scanning Electron

The nanocomposites of polypropylene (PP)/graphene were prepared by melt blending. The effects of the dosage of graphene on the flow and mechanical properties of the nanocomposites were investigated. The morphologies of fracture surfaces were characterized through scanning electron microscopy (SEM). The graphene simultaneous enhanced tensile and impact properties of nanocomposites. A 3.22% increase in tensile strength, 39.8% increase in elongation at break, and 26.7% increase in impact strength are achieved by addition of only 1 wt.% of graphene loading. The morphological behavior indicates the fracture surface of PP/graphene is more rough than that of pure PP.

scholarly journals Study of Betel Nut Husk Fibre Reinforced Polymer Composite

2019 ◽  
Vol 6 (2) ◽  
pp. 378-385
Author(s):  
Hoo Tien Nicholas Kuan ◽  
Kennedy Jadum ◽  
Mahshuri Yusof ◽  
Sim Nee Ting ◽  
Chee Khoon Ng
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Volume Fraction ◽  
Hardness Test ◽  
Betel Nut ◽  
Compression Moulding ◽  
The Matrix ◽  
Fibre Reinforced Polymer ◽  
Scanning Electron

The mechanical properties of oxo-biodegradable high-density polyethylene (oxo-HDPE) composites reinforced betel nut husk (BNH) fibre were studied in this research. A neat oxo-HDPE laminate and four betel nut fibre reinforced oxo-HDPE composites were fabricated using hot press compression moulding method. The composites contain 7%, 12%, 17%, and 22% fibres volume fraction respectively. The cross section of the composite was observed under scanning electron microscopy (SEM) and all five laminates are put through tensile test and hardness test. The result of the study shows that adding betel nut husk (BNH) fibres as reinforcement increases its tensile strength, specific tensile strength, and hardness of the composites. The good lamination observed under scanning electron microscopy (SEM) enable good transfer and distribution of stresses from the matrix to the fibres.

scholarly journals PENGARUH LIMBAH ABU PEMBAKARAN BIOMASSA KELAPA SAWIT TERHADAP SIFAT-SIFAT FISIKA DAN MEKANIK HIGH IMPACT POLYSTYRENE

2015 ◽  
Vol 4 (3) ◽  
pp. 23-28
Author(s):  
Fadhilla Asyri ◽  
Kartini Noor Hafni ◽  
A. Haris Simamora
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Impact Strength ◽  
Specific Gravity ◽  
Physical And Mechanical Properties ◽  
High Impact ◽  
Elongation At Break ◽  
Scanning Electron

This study aims was to determine the effect of palm oil fuel ash (POFA) composite as filler on the physical and mechanical properties of high impact polystyrene (HIPS) composites. The research methodology included preparation of raw materials, treatment POFA (hydration process of POFA), mixing using tumbler and then extruder, molding composite specimens, and testing. The variables used were weight ratio of HIPS with 140 mesh POFA at 95/5; 92.5/7.5; 90/10. The composites were tested by Fourier Transform Infrared (FTIR), ash content, specific gravity, tensile strength, elongation at break, impact strength, hardness test, and Scanning Electron Microscopy (SEM). The results of FTIR characterization shows the formation of –OH bonding that was suspected as Si-OH or Si-hydrat. Results of physical and mechanical properties of the composites shows that increase of the filler composition in HIPS-POFA composites until the ratio of 90/10, increase the specific gravity to 7.2% of the original, tensile strength did not change significantly to 28.4 MPa, elongation at break decreased to 2.7%, impact strength decreased to 3.183 KJ/m2, and the hardness increased to 110.5, and Scanning Electron Microscopy (SEM) test show the transformation of POFA structure on treated POFA and intercalation between the matrix and POFA.

Polyolefin Composites Filled with Magnesium Hydroxide

2002 ◽  
Vol 10 (6) ◽  
pp. 447-456 ◽  
Author(s):  
Song Zhu ◽  
Yong Zhang ◽  
Yinxi Zhang
Keyword(s):  
Tensile Strength ◽  
Impact Strength ◽  
Flexural Strength ◽  
Magnesium Hydroxide ◽  
Acid Anhydride ◽  
Low Density Polyethylene ◽  
Linear Low Density Polyethylene ◽  
Izod Impact ◽  
The Impact ◽  
Scanning Electron

In this study, modified and non-modified composites of polypropylene (PP) and linear low-density polyethylene (LLDPE) filled with magnesium hydroxide (Mg(OH)2) were investigated, and maleic acid anhydride-grafted PP or LLDPE (MAH-g-PP, or MAH-g-LLDPE) were used as polymer modifiers. In the composites, when the LLDPE was partially replaced by MAH-g-LLDPE, the notched Izod impact strength, tensile strength, and flexural strength of the composites increased, while the modulus decreased. When the PP was partially replaced by MAH-g-PP, the tensile strength and flexural strength of the composites increased, and the impact strength and modulus changed slightly. The phase structure of the composites was characterized using scanning electron microscopy (SEM), dynamic mechanical thermal analysis (DMTA), and differential scanning calorimeter (DSC).

Effect of water absorption on mechanical and tribological properties of Indian ramie/epoxy composites

2021 ◽  
pp. 135065012110056
Author(s):  
Rajiv Kumar ◽  
Mir I Ul Haq ◽  
Sanjay M Sharma ◽  
Ankush Raina ◽  
Ankush Anand
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Impact Strength ◽  
Water Absorption ◽  
Epoxy Composites ◽  
Absorption Test ◽  
Mechanical And Tribological Properties ◽  
Water Absorption Test ◽  
Scanning Electron

In the present work, the water absorption behaviour of Indian ramie/epoxy composites and its effect on mechanical and tribological behaviour have been investigated. The composites fabricated using the hand layup technique were immersed in distilled water at room temperature for water absorption test for a period of 120 days. Mechanical and tribological properties were evaluated for composites with 30 wt.% ramie fibre loading. The results obtained were compared with that of the dry specimen. Mechanical properties including tensile strength, flexural strength, impact strength and hardness were evaluated. A reduction of 16.85%, 13.63%, 21.02% and 3.33% in tensile strength, flexural strength, impact strength and hardness was observed after the water immersion, respectively. Friction and wear behaviour was also investigated for water immersed specimen. Frictional coefficient decreased for the developed composites and wear performance reduced after the water absorption test. Fractured surfaces post to mechanical testing and worn out surfaces of tribological test samples were examined by scanning electron microscopy. The weakening of fibre–matrix interface was observed in the scanning electron microscopy micrographs, which appears to be the main cause for the degradation of properties.

scholarly journals Analysis of PLA Composite Filaments Reinforced with Lignin and Polymerised-Lignin-Treated NFC

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2174
Author(s):  
Diana Gregor-Svetec ◽  
Mirjam Leskovšek ◽  
Blaž Leskovar ◽  
Urška Stanković Elesini ◽  
Urška Vrabič-Brodnjak
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Glassy State ◽  
Nanofibrillated Cellulose ◽  
Dynamic Mechanical Properties ◽  
Initial Modulus ◽  
Surface Modified ◽  
Scanning Electron

Polylactic acid (PLA) is one of the most suitable materials for 3D printing. Blending with nanoparticles improves some of its properties, broadening its application possibilities. The article presents a study of composite PLA matrix filaments with added unmodified and lignin/polymerised lignin surface-modified nanofibrillated cellulose (NFC). The influence of untreated and surface-modified NFC on morphological, mechanical, technological, infrared spectroscopic, and dynamic mechanical properties was evaluated for different groups of samples. As determined by the stereo and scanning electron microscopy, the unmodified and surface-modified NFCs with lignin and polymerised lignin were present in the form of plate-shaped agglomerates. The addition of NFC slightly reduced the filaments’ tensile strength, stretchability, and ability to absorb energy, while in contrast, the initial modulus slightly improved. By adding NFC to the PLA matrix, the bending storage modulus (E’) decreased slightly at lower temperatures, especially in the PLA samples with 3 wt% and 5 wt% NFC. When NFC was modified with lignin and polymerised lignin, an increase in E’ was noticed, especially in the glassy state.

The Preparation and Property Research on Laponite-Poly (L-Lactide) Composite Film

2013 ◽  
Vol 750-752 ◽  
pp. 1919-1923 ◽  
Author(s):  
Guo Xian Zhou ◽  
Ming Wei Yuan ◽  
Lin Jiang ◽  
Ming Long Yuan ◽  
Hong Li Li
Keyword(s):  
Electron Microscopy ◽  
Thermal Stability ◽  
Tensile Strength ◽  
Composite Film ◽  
Composite Films ◽  
Complexing Agent ◽  
Solution Blending ◽  
Method Of Solution ◽  
Thermal Stability Of ◽  
Scanning Electron

The laponite-poly (L-lactide) composite films are prepared by the method of solution blending with polylactide (PLA) and laponite. The result shows that the homogeneous and smooth composite film is prepared with 1, 4-dioxane. Thermogravimetry analysis (TG) and tensile strength studies demonstrate that the thermal stability and tensile strength are improved with the laponite added. The scanning electron microscopy (SEM) measurement indicates that the pores of composite films get uniform and network structure is more and more compact with compared to pure PLA film. The present study reveals that the laponite as a complexing agent can improve the mechanical properties and thermal stability of PLA.

scholarly journals Preparation and Mechanical Properties of Graphene Oxide: Cement Nanocomposites

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Fakhim Babak ◽  
Hassani Abolfazl ◽  
Rashidi Alimorad ◽  
Ghodousi Parviz
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Graphene Oxide ◽  
Cement Mortar ◽  
Cement Matrix ◽  
Cement Composites ◽  
Xrd Diffraction ◽  
Calcium Silicate Hydrates ◽  
The Matrix ◽  
Scanning Electron

We investigate the performance of graphene oxide (GO) in improving mechanical properties of cement composites. A polycarboxylate superplasticizer was used to improve the dispersion of GO flakes in the cement. The mechanical strength of graphene-cement nanocomposites containing 0.1–2 wt% GO and 0.5 wt% superplasticizer was measured and compared with that of cement prepared without GO. We found that the tensile strength of the cement mortar increased with GO content, reaching 1.5%, a 48% increase in tensile strength. Ultra high-resolution field emission scanning electron microscopy (FE-SEM) used to observe the fracture surface of samples containing 1.5 wt% GO indicated that the nano-GO flakes were well dispersed in the matrix, and no aggregates were observed. FE-SEM observation also revealed good bonding between the GO surfaces and the surrounding cement matrix. In addition, XRD diffraction data showed growth of the calcium silicate hydrates (C-S-H) gels in GO cement mortar compared with the normal cement mortar.

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