Development of New TiO2 Nanoparticles Modified Photosensitive Resin for Rapid Prototyping

2020 ◽  
Vol 12 (2) ◽  
pp. 244-248
Author(s):  
Yiwen Xu ◽  
Shengcai Qi ◽  
Yuanzhi Xu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Flexural Strength ◽  
Rapid Prototyping ◽  
Tensile Modulus ◽  
Heat Stability ◽  
Scanning Calorimetry ◽  
Photosensitive Resin ◽  
Cost Efficient ◽  
Thermal Stability Of

The objective of this study is to enhance the thermal and mechanical properties of the photosensitive resin for RP (Rapid Prototyping) modifying with TiO2 nanoparticles NPs. The coupling agent KH570 was chosen for treating the surface of TiO2 NPs. The influence of the TiO2 content on the viscosity and the curing depth of photosensitive resin were analyzed in this study. We also tested the mechanical properties such as tensile modulus, tensile strength, hardness and flexural strength. Using differential scanning calorimetry, we tested the thermal stability of the modified photosensitive resin. Modified photosensitive resin's comprehensive performance was really good when the content of TiO2 was at 0.25%, the increase in tensile strength from 24.3 to 46.9 MPa was noticed to be 89%, the increase in tensile modulus from 1990 to 2251 MPa was noticed to be 18%, the increase in hardness and flexural strength was noticed to be 5 and 6%, respectively. Moreover, the heat stability and plasticity of the modified photosensitive resin are also enhanced. This paper gives a cost-efficient method of improving the functioning of photosensitive resin for RP.

Mechanical Property Improvement of Poly(Butylene Succinate) by Reinforcing with Modified Fumed Silica

2014 ◽  
Vol 1025-1026 ◽  
pp. 215-220 ◽  
Author(s):  
Sasirada Weerasunthorn ◽  
Pranut Potiyaraj
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Flexural Strength ◽  
Fumed Silica ◽  
Tensile Modulus ◽  
Silica Particles ◽  
Melt Mixing ◽  
Butylene Succinate ◽  
Ir Spectrophotometry

Fumed silica particles (SiO2) were directly added into poly (butylene succinate) (PBS) by melt mixing process. The effects of amount of fumed silica particles on mechanical properties of PBS/fumed silica composites, those are tensile strength, tensile modulus, impact strength as well as flexural strength, were investigated. It was found that the mechanical properties decreased with increasing fumed silica loading (0-3 wt%). In order to increase polymer-filler interaction, fumed silica was treated with 3-glycidyloxypropyl trimethoxysilane (GPMS), and its structure was analyzed by FT-IR spectrophotometry. The PBS/modified was found to possess better tensile strength, tensile modulus, impact strength and flexural strength that those of PBS/fumed silica composites.

scholarly journals Effect of Ading Nanocarbon Black on the Mechanical Properties of Epoxy

2014 ◽  
Vol 7 (1) ◽  
pp. 94-108
Author(s):  
Amer Hameed Majeed ◽  
Mohammed S. Hamza ◽  
Hayder Raheem Kareem
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Impact Strength ◽  
Flexural Strength ◽  
Carbon Black ◽  
Modulus Of Elasticity ◽  
Tensile Modulus ◽  
Dispersion Method ◽  
Carbon Black Nanoparticles

The study covers the effect of nanocarbon black particles (N220) on some important mechanical properties of epoxy reinforced with it [carbon black nanoparticles]. The nanocomposites were prepared with (1 to 10 wt. %) of carbon black nanoparticles using ultrasonic wave bath machine dispersion method. The results had shown that the tensile strength , tensile modulus of elasticity, flexural strength and impact strength are improved by (24.02%,7.93%,17.3% and 6% ) respectively at 2wt % .The compressive strength and hardness are improved by (44.4%, 12%) at 4wt%.

scholarly journals Effects of Nanoclay on Tensile and Flexural Properties of Pineapple Leaf Fibre Reinforced Phenolic Composite

2019 ◽  
Vol 8 (2S4) ◽  
pp. 473-476 ◽  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Flexural Strength ◽  
Tensile Properties ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Tensile Modulus ◽  
Flexural Properties ◽  
Hot Press ◽  
Phenolic Composite

Phenolic based PALF/nanoclay hybrid composites was prepared by adding Montmorillonite (MMT) as filler at different loading (1%, 2% and 3%) by using hot press technique. Obtained results indicated that adding MMT in PALF/phenolic composites considerably improves the tensile and flexural strength and modulus. Tensile properties showed that the tensile strength increased after adding MMT though tensile modulus decreased. Flexural strength and modulus were enhanced after adding MMT up to 2%, further addition of MMT declined the properties. 2% MMT showed better tensile and flexural properties. 3% MMT/PALF hybrid composite showed no further improvement in tensile properties after 2% MMT, however the flexural properties were reduced. 3% MMT did not improved much maybe agglomeration accrued. PALF/nanoclay/phenolic hybrid composites revealed good mechanical properties that encourage to use for structural purposes.

scholarly journals Optimizing Processing Parameters for Hybridized Kenaf/PALF Reinforced HDPE Composite

2011 ◽  
Vol 471-472 ◽  
pp. 674-679 ◽  
Author(s):  
I.S. Aji ◽  
E.S. Zainuddin ◽  
Abdan Khalina ◽  
S.M. Sapuan
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Flexural Strength ◽  
Processing Speed ◽  
Flexural Modulus ◽  
Tensile Modulus ◽  
Processing Parameters ◽  
Optimum Processing ◽  
Internal Mixer

This work is aimed at achieving optimum processing parameters for Kenaf/PALF/HDPE. Processing parameters like temperature, speed of rotor and duration of composite mixing in an internal mixer were examined. Oven conditioned and unconditioned specimen were prepared and tested. The best tensile strength and tensile modulus were obtained at an optimum processing parameters of 190oC, 40rpm, and 15min for temperature of processing, speed of rotor and duration of mixing respectively, while 190oC, 40rpm and 20min gave the best flexural strength and 190oC, 40rpm and 25min for flexural modulus. Conditioning of composite tends to reduce its tensile modulus while increasing its strength and flexural modulus. All samples were produced at only 10w%(mass) of fibre in the composite at 1:1 and less than 0.3mm fibre ratio and length respectively. Utilization of these parameters according to end requirement can help in achieving optimum mechanical properties on hybridized composites.

scholarly journals Development of green MMT-modified hemicelluloses based nanocomposite film with enhanced functional and barrier properties

BioResources ◽  
2019 ◽  
Vol 14 (4) ◽  
pp. 8029-8047
Author(s):  
Kassim M. Haafiz ◽  
Owolabi F. A. Taiwo ◽  
Nadhilah Razak ◽  
Hashim Rokiah ◽  
Hussin M. Hazwan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Nanocomposite Film ◽  
Tensile Modulus ◽  
Water Vapor Permeability ◽  
Physical And Mechanical Properties ◽  
Barrier Properties ◽  
Nanocomposite Films ◽  
Vapor Permeability ◽  
Scanning Calorimetry

A biocomposite was successfully prepared by blending montmorillonite (MMT)/hemicellulose from oil palm empty fruit bunches (OPEFB) with carboxymethyl cellulose (CMC) through solution casting. The composite was characterized by scanning electron microscopy (SEM), Fourier transmission infrared spectroscopy (FT-IR), and X-ray diffraction (XRD). The results displayed good compatibility between the mixtures of the blended MMT/hemicellulose and CMC due to the hydrogen bonding and electrostatic interaction. There was an improvement in the thermal analysis through their thermogravimetry analysis (TGA), derivative thermogravimetry (DTG), and differential scanning calorimetry (DSC), mechanical properties (tensile strength and tensile modulus),and water vapor permeability (WVP). The best values of tensile strength and tensile modulus of 47.5 MPa and 2.62 MPa, respectively, were obtained from 60H-40CMC-MMT nanocomposite films. The results showed that the mixture of the blended MMT/hemicelluloses and CMC produced a robust nanocomposite film with improved physical and mechanical properties, demonstrating that it is a promising candidate for green packaging applications.

scholarly journals Improvement in Mechanical Properties of Cantala Fiber and Short Cantala/Recycled High-Density Polyethylene Composite through Chemical Treatment

2017 ◽  
Author(s):  
Wijang Wisnu Raharjo ◽  
Rudy Soenoko ◽  
Yudy Surya Irawan ◽  
Agus Suprapto
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Flexural Strength ◽  
Alkali Treatment ◽  
Amorphous Material ◽  
Tensile Modulus ◽  
Fiber Surface ◽  
Degree Of Crystallinity ◽  
Polyethylene Composite ◽  
Treated Fiber

The improvement of mechanical properties of cantala fiber and its composites. Treatments including alkali, silane, and the combination of both were carried out to modify the fiber surface. The influence of chemical treatments on fiber properties such as the degree of crystallinity and tensile strength was investigated. A variety of short cantala fiber reinforced rHDPE composites were produced by hot press, and the effect of fiber treatment on the flexural strength of composites was observed. SEM observations also carried out to highlight these changes. The result shows that alkali treatment improves tensile strength and tensile modulus of alkali treated fiber (NF12) which was predicted as a result of the enhancement of the cellulose crystallinity. In contrast, the tensile strength and tensile modulus of silane (SF05) and alkali-silane treated fiber (NSF05) decreased compared to untreated fiber (UF) which is caused by the addition of amorphous material. The tensile strength of alkali-silane treated fiber (NSF05) was lower than alkali treated fiber (NF12), but the composites prepared with NSF05 showed the highest increment of flexural strength of 25.9%. This may be due the combination of alkali and silane treatment helped in the better formation of fiber-matrix interface adhesion.

scholarly journals Performance Evaluation of Cellulose Nanofiber with Residual Hemicellulose as a Nanofiller in Polypropylene-Based Nanocomposite

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1064
Author(s):  
Mohd Nor Faiz Norrrahim ◽  
Hidayah Ariffin ◽  
Tengku Arisyah Tengku Yasim-Anuar ◽  
Mohd Ali Hassan ◽  
Nor Azowa Ibrahim ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Weight Loss ◽  
Tensile Strength ◽  
Performance Evaluation ◽  
Flexural Strength ◽  
Decomposition Temperature ◽  
Cellulose Nanofiber ◽  
Hemicellulose Removal ◽  
Reinforcement Material

Residual hemicellulose could enhance cellulose nanofiber (CNF) processing as it impedes the agglomeration of the nanocellulose fibrils and contributes to complete nanofibrillation within a shorter period of time. Its effect on CNF performance as a reinforcement material is unclear, and hence this study seeks to evaluate the performance of CNF in the presence of amorphous hemicellulose as a reinforcement material in a polypropylene (PP) nanocomposite. Two types of CNF were prepared: SHS-CNF, which contained about 11% hemicellulose, and KOH-CNF, with complete hemicellulose removal. Mechanical properties of the PP/SHS-CNF and PP/KOH-CNF showed an almost similar increment in tensile strength (31% and 32%) and flexural strength (28% and 29%) when 3 wt.% of CNF was incorporated in PP, indicating that hemicellulose in SHS-CNF did not affect the mechanical properties of the PP nanocomposite. The crystallinity of both PP/SHS-CNF and PP/KOH-CNF nanocomposites showed an almost similar value at 55–56%. A slight decrement in thermal stability was seen, whereby the decomposition temperature at 10% weight loss (Td10%) of PP/SHS-CNF was 6 °C lower at 381 °C compared to 387 °C for PP/KOH-CNF, which can be explained by the degradation of thermally unstable hemicellulose. The results from this study showed that the presence of some portion of hemicellulose in CNF did not affect the CNF properties, suggesting that complete hemicellulose removal may not be necessary for the preparation of CNF to be used as a reinforcement material in nanocomposites. This will lead to less harsh pretreatment for CNF preparation and, hence, a more sustainable nanocomposite can be produced.

Mechanical properties of low-density paper

2020 ◽  
Vol 35 (1) ◽  
pp. 61-70
Author(s):  
Na Young Park ◽  
Young Chan Ko ◽  
Lili Melani ◽  
Hyoung Jin Kim
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Structural Change ◽  
Tensile Testing ◽  
Tensile Modulus ◽  
Gauge Length ◽  
Efficiency Factor ◽  
Low Density ◽  
Tensile Stiffness ◽  
Lower Tensile Strength

AbstractFor the mechanical properties of paper, tensile testing has been widely used. Among the tensile properties, the tensile stiffness has been used to determine the softness of low-density paper. The lower tensile stiffness, the greater softness of paper. Because the elastic region may not be clearly defined in a load-elongation curve, it is suggested to use the tensile modulus which is defined as the slope between the two points in the curve. The two points which provide the best correlation with subjective softness evaluation should be selected. Low-density paper has a much lower tensile strength, but much larger elongation at the break. It undergoes a continuous structural change during mechanical testing. The degree of the structural change should depend on tensile conditions such as the sample size, the gauge length, and the rate of elongation. For low-density paper, the tensile modulus and the tensile strength should be independent of each other. The structure efficiency factor (SEF) is defined as a ratio of the tensile strength to the tensile modulus and it may be used a guideline in developing superior low-density paper products.

Influence of the Composition of Cement Mortars Modified by Lime or Polymers on the Mechanical Properties and Microstructure of Mortars

2013 ◽  
Vol 592-593 ◽  
pp. 647-650 ◽  
Author(s):  
Małgorzata Lenart
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Reinforced Concrete ◽  
Flexural Strength ◽  
Polyvinyl Alcohol ◽  
Polymer Composites ◽  
Adhesion Strength ◽  
Hardened Cement ◽  
Cement Mortars ◽  
Styrene Butadiene

Cement – polymer composites are nowadays widely used in repair systems not only in case of concrete or reinforced concrete constructions but also in masonry. Polymers addition for example already at 5% m.c. modifies the structure of the cement – polymer composite in a way that many of the mechanical properties such as flexural strength, tensile strength or adhesion to substrates are improved. The paper presents the results of tests such as flexural, compressive or adhesion strength to ceramic substrate of hardened cement mortars with different composition, as well as selected cement mortars modified by two polymers: polyvinyl alcohol and styrene – butadiene polymer dosed at 5 % m.c. Four types of cement mortars modified by lime (component used in historical constructions as well as in contemporary masonry mortars) are also examined for comparison.

Mechanical and microstructural properties of polystyrene based composites: positron lifetime spectroscopic and DSC studies

2011 ◽  
Vol 31 (2-3) ◽  
Author(s):  
Abdullah Mohammed Ali Mohammed Altaweel ◽  
Jaya Madhu Raj ◽  
Malalvalli Nagarajaiah Chandrashekara ◽  
Puttegowda Ramya ◽  
Parthasarathy Sampathkumaran ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Free Volume ◽  
Positron Lifetime ◽  
Tensile Modulus ◽  
Silica Content ◽  
Scanning Calorimetry ◽  
Dsc Studies ◽  
Microstructural Property ◽  
Calcium Aluminosilicate

Abstract Polystyrene (PS) based composites respectively with cenosphere (CS) and calcium aluminosilicate (CAS) as fillers were studied using the positron lifetime technique to reveal the correlation between free volume, a microstructural property, and mechanical properties of the composites (tensile strength and tensile modulus). The thermal stability of the composites was determined using differential scanning calorimetry. The results showed that addition of CAS filler lead to a significant improvement in the mechanical properties of the composite, whereas addition of CS resulted in improvement in tensile modulus only. Both PS/CAS and PS/CS composites showed enhancement in thermal stability compared with that of the pure PS matrix. The positron results showed that the average free volume size for the PS/CAS composite (at 40 phr CAS) was reduced significantly compared with that of the pure PS. These results are understood in terms of the influence of silica content, filler-matrix interaction, and particle size.

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