scholarly journals Investigation of the Effect of Polycarbonate Rate on Mechanical Properties of Polybutylene Terephthalate/Polycarbonate Blends

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Ngoc-Thien Tran ◽  
Nga Thi-Hong Pham
Keyword(s):  
Tensile Strength ◽  
Impact Strength ◽  
Flexural Strength ◽  
High Impact ◽  
High Tensile Strength ◽  
Polybutylene Terephthalate ◽  
Izod Impact Strength ◽  
Izod Impact ◽  
High Impact Strength ◽  
The Impact

Polybutylene terephthalate (PBT) is a brittle polymer with the disadvantage of low impact toughness, so it is not easy to meet the requirements of both high tensile strength, flexural strength, and high impact strength. In this study, PBT/polycarbonate (PC) blends at different ratios of 95/5, 90/10, 85/15, and 80/20 are investigated. Tensile strength, flexural strength, and unnotched Izod impact strength are studied according to the ASTM D638, ASTM D790, and ASTM D256 standards. The results show that tensile strength, which increased with increasing PC content, is 53.00, 62.34, 60.59, 62.98, and 64.46 MPa for 0, 5, 10, 15, and 20% PC samples. Flexural strength and elastic flexural testing of PBT/PC blends are higher than neat PBT. In addition, the unnotched Izod impact strength of PBT/PC is also higher than PBT. However, when PC content increases, impact strength tends to decrease. Impact strength is 44.82, 80.46, 68.82, 50.45, and 48.05 kJ/m2 corresponds to 0, 5, 10, 15, and 20% PC, in which 5% PC sample is twice as high as the impact strength of PBT. Microstructure of the blends has shown that PC has become dispersed phase in PBT matrix. The size and quantity of dispersed PC particles increase with increasing PC rate in the blend. Thus, when adding PC, PBT/PC all meet the requirements of high tensile strength, flexural strength, and high impact strength. The PBT/5% PC model gives the highest impact strength while still ensuring durability, which potential application for making car door handles.

Physical Properties of Four Acrylic Denture Base Resisns

2005 ◽  
Vol 6 (4) ◽  
pp. 93-100 ◽  
Author(s):  
Thomas R. Meng ◽  
Mark A. Latta
Keyword(s):  
Impact Strength ◽  
Flexural Strength ◽  
Physical Properties ◽  
Flexural Modulus ◽  
Heat Processing ◽  
Denture Base ◽  
Test Fixture ◽  
Izod Impact Strength ◽  
Izod Impact ◽  
The Impact

Abstract Resistance to impact fracture and high flexural strength are desirable properties of denture base acrylics. The purpose of this laboratory study was to determine the Izod impact strength, the flexural strength, the flexural modulus, and the yield distance for four premium denture resins. Bar specimens 86 x 11 x 3 mm of Lucitone 199, Fricke Hi-I, ProBase Hot, and Sledgehammer Maxipack were fabricated following the manufacturer's instructions for heat processing. The bars were surface finished using silicon carbide paper to 600 grit. Ten specimens from three lots of each material were made (n=30). Flexural strength, flexural modulus, and yield distance were determined by testing the specimens to failure using a three-point test fixture. Izod impact strength was determined using an Izod tester on un-notched specimens generated from the flexural test (n=60). Analysis of variance (ANOVA) and post-hoc Tukey's test were used for statistical comparison of each property. There were significant differences in the physical properties among the denture acrylics tested. Lucitone 199 demonstrated the highest impact strength, flexural strength, and yield distance (p<0.05). Lucitone 199 with an Izod impact strength of 5.5 ± 1.2 N·m, a flexural strength of 99.5 ± 4.5 MPa, and yield distance of 9.9 ± 0.76 mm exhibited statistically greater results than Fricki Hi-I, ProBase Hot, and Sledgehammer Maxipack. Fricki Hi- I with a yield distance of 7.3 ± 1.1 mm was statically greater than ProBase Hot and Sledgehammer Maxipack. Fricki Hi-I, ProBase Hot, and Sledgehammer Maxipack were statistically similar for the Izod impact strength and flexural strength tests performed. ProBase Hot and Sledgehammer Maxipack yielded statistically similar results for all tests performed. Flexural modulus had an inverse relationship to the impact strength, flexural strength, and yield distance. Citation Meng TR, Latta MA. Physical Properties of Four Acrylic Denture Base Resins. J Contemp Dent Pract 2005 November;(6)4:093-100.

scholarly journals Impacts of Modified Graphite Oxide on Crystallization, Thermal and Mechanical Properties of Polybutylene Terephthalate

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2431
Author(s):  
Hongyan Li ◽  
Zhijun Wei
Keyword(s):  
Thermal Stability ◽  
Tensile Strength ◽  
Electron Microscope ◽  
Impact Strength ◽  
Degree Of Crystallinity ◽  
Polybutylene Terephthalate ◽  
Elongation At Break ◽  
X Ray ◽  
Izod Impact ◽  
The Impact

In this study, the surface modification on graphene oxide (GO) was performed using octadecylamine (ODA). Furthermore, polybutylene terephthalate/GO (PBT/GO) composites were prepared to elucidate the role of GO surface modification on the mechanical performance, thermal stability and crystallization behavior. Results of Fourier transform infrared spectra (FT-IR), Raman spectrum, thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and transmission electron microscope (TEM) revealed that ODA was successfully grafted on GO. Differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD), tensile test, Izod impact strength test and TGA were carried out on the PBT/GO composites. Results indicated that the addition of raw GO can enhance the crystallization temperature and degree of crystallinity and can slightly improve the thermal stability and tensile strength of the composites. However, the impact strength and elongation at break were seriously decreased owing to the poor compatibility between the GO and PBT matrix. Once the modified GO was added, the crystallization temperature and degree of crystallinity were greatly increased. The tensile strength increased greatly while the elongation at break and Izod impact strength were efficiently maintained; these were evidently higher than those of PBT/raw GO. Moreover, thermal stability was greatly enhanced. SEM (scanning electron microscope) observation results on the impact-fractured surface clearly confirmed the improved compatibility between the modified GO and PBT matrix. A related mechanism had been discussed.

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).

scholarly journals Comparison of Flexural Strength between Fiber-Reinforced Polymer and High-Impact Strength Resin

2008 ◽  
Vol 173 (10) ◽  
pp. 1023-1030 ◽  
Author(s):  
Denis Vojvodic ◽  
Franjo Matejicek ◽  
Ante Loncar ◽  
Domagoj Zabarovic ◽  
Dragutin Komar ◽  
...  
Keyword(s):  
Impact Strength ◽  
Flexural Strength ◽  
High Impact ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
High Impact Strength

Electrical and Mechanical Properties of Carbon Aerogels / Phenolic Resin for Nanocomposites

2011 ◽  
Vol 236-238 ◽  
pp. 1725-1730 ◽  
Author(s):  
Wei Jen Chen ◽  
Ming Yuan Shen ◽  
Yi Luen Li ◽  
Chin Lung Chiang ◽  
Ming Chuen Yip
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Flexural Strength ◽  
Phenolic Resin ◽  
Surface Conductivity ◽  
Carbon Aerogels ◽  
Polymer Resin ◽  
The Impact ◽  
Humidity Environment

This study used carbon aerogels (CA) and phenolic resin in fixed proportations to produce nano high polymer resin, and used poly ehtylene oxide (PEO) as the modifying agent for phenolic resin to improve the mechanical properties of phenolic resin and promote the surface conductivity. The prepared nano high polymer resin and carbon cloth were made into nano-prepreg by using ultrasonic impregnation method, and a nano-prepreg composite material was prepared by using hot compacting and cut to test pieces to measure its mechanical properties and surface conductivity as well as the influence of temperature-humidity environment (85°C/168hr and 85°C/85%RH/168hr) on mechanical properties. The result showed that the surface conductivity increased by 64.55%, the tensile strength at room temperature increased by 35.7%, the flexural strength increased by 18.4%, and the impact strength increased by 101%. In hot environment (85°C/168hr), the tensile strength decreased by 23.8%, the flexural strength increased by 3.1%, and the impact strength increased by 84.6%. In high temperature-high humidity environment (85°C/85% RH/168hr), the tensile strength decreased by 29.6%, the flexural strength decreased by 17%, and the impact strength increased by 95.7%.Introduction

scholarly journals Excellent impact strength of ethylene-methyl acrylate copolymer toughened polycarbonate

RSC Advances ◽  
2015 ◽  
Vol 5 (106) ◽  
pp. 87589-87597 ◽  
Author(s):  
Nisha Bagotia ◽  
Bhanu Pratap Singh ◽  
Veena Choudhary ◽  
D. K. Sharma
Keyword(s):  
Tensile Strength ◽  
Impact Strength ◽  
Methyl Acrylate ◽  
Izod Impact Strength ◽  
Acrylate Copolymer ◽  
Izod Impact ◽  
Ethylene Methyl Acrylate

The notched izod impact strength of PC/EMA blends showed a positive blending effect and increased 381% with incorporation of a very little amount of EMA (5%) with a marginal decrease in tensile strength of PC.

scholarly journals Properties of Pavement Quality Concrete Prepared with Recycled Coarse Aggregate

2020 ◽  
Vol 8 (5) ◽  
pp. 3186-3192 ◽  
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Impact Strength ◽  
Flexural Strength ◽  
Coarse Aggregate ◽  
Strength Characteristics ◽  
Laboratory Environment ◽  
Recycled Coarse Aggregate ◽  
The Impact ◽  
Remarkable Reduction

The investigation is intended to evaluate the impact of substitution of demolished concrete debris as coarse aggregate (CA) in pavement quality concrete (PQC). The strength characteristics of PQC such as compressive strength, tensile strength, flexural strength and impact strength after adding recycled coarse aggregate (RCA) are experimentally determined in laboratory environment. Specimens of M30 grade concrete were prepared and tested. The RCA was substituted up to 50% by replacing CA content. Based on the investigation results, it was found that reduction of slump value due to the substitution of RCA in concrete. There is no remarkable reduction of compressive strength and flexural strength up to 30% and 40 % replacement of CA respectively in all the curing periods. The impact strength was reduced due to addition of RCA and observed 8% reduction after adding 20% RCA. It is suggested that RCA may be used up to 20% as CA in PQC.

scholarly journals Investigation of Hybrid Composite Properties Fabricated from Bagasse Fibers Reinforced with Al2O3 and SiC for Light Weight Applications

2021 ◽  
Vol 8 ◽  
pp. 48-56
Author(s):  
Yobsan Alemu Heyi ◽  
Gutata Kabeta Woyessa ◽  
Moera Gutu Jiru ◽  
Genet Bekele Alemu ◽  
Lamrot Kebede ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Impact Strength ◽  
Flexural Strength ◽  
Hybrid Composite ◽  
Filler Materials ◽  
Manufacturing Companies ◽  
Design Data ◽  
The Government ◽  
The Impact ◽  
Bagasse Fiber

The primary purpose of this study was to investigate mechanical properties of hybrid composite fabricated from bagasse fibers reinforced with Al2O3 and SiC for automotive purposes. The technique applied was referred to as the hand layup technique for the fabrication of composite. The experiment was conducted based on Taguchi L9 orthogonal array design. Data shows that the maximum tensile and flexural strength were 39.9 and 56.1 MPa respectively. Hardness and impact strength were 75.05 HV and 14 J respectively. The results indicated that the increasing Al2O3 and SiC wt.% increase the tensile strength and after bagasse fiber wt.% reaches optimum values the tensile strength decreased. Increasing Al2O3 wt.%, increases flexural strength and after bagasse fiber and SiC wt.% reaches optimum values, flexural strength was decreased. Increasing bagasse fiber wt.% increases the hardness of composite, and increasing Al2O3 and SiC wt.% increases the hardness, then after reaching optimum values the hardness was decreased. Increasing Al2O3 wt.% after the optimum values decrease the impact strength, and increasing bagasse fiber and SiC wt.% increase impact strength. The developed hybrid composite material was found to be improved the properties of composites after addition of Al2O3 and SiC powder as filler materials. This thesis recommends higher institutes, automotive companies, manufacturing companies, the construction sector and the government to conduct on how to utilize this abundant waste of bagasse fiber resource.

Study on Application of Modified Polyethylene in Preparation of Wood-Plastic Composites

2010 ◽  
Vol 150-151 ◽  
pp. 379-385
Author(s):  
Qun Lü ◽  
Qing Feng Zhang ◽  
Hai Ke Feng ◽  
Guo Qiao Lai
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Flexural Strength ◽  
High Density Polyethylene ◽  
Wood Flour ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
The Matrix ◽  
The Impact

The wood-plastic composites (WPC) were prepared via compress molding by using the blends of high density polyethylene (HDPE) and modified polyethylene (MAPE) as the matrix and wood flour (WF) as filler. The effect of MAPE content in the matrix on the mechanical properties of the matrix and WPC was investigated. It was shown that the change of MAPE content in the matrix had no influence on the tensile strength of the matrix, but markedly reduced the impact strength of the matrix. Additionally, it had significant influence on the strength of WPC. When the content of wood flour and the content of the matrix remained fixed, with increasing the content of MAPE in the matrix, the tensile strength and the flexural strength of WPC tended to increase rapidly initially and then become steady. Moreover, with the increasing of MAPE concentration, the impact strength of WPC decreased when the low content of wood flour (30%) was filled, but increased at high wood flour loading (70%).

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