scholarly journals Studies on Fabrication and Characterization of Nanoclay Reinforced Nylon-6 composites: Enhancement of Heat distortion Temperature

2010 ◽  
Vol 13 (1-2) ◽  
pp. 67
Author(s):  
S. Manocha ◽  
Valay Solanki ◽  
Nikesh Patel ◽  
L.M. Manocha
Keyword(s):  
Tensile Strength ◽  
Impact Strength ◽  
Crystallization Rate ◽  
Fracture Morphology ◽  
Nylon 6 ◽  
Degree Of Crystallinity ◽  
Tensile Fracture ◽  
Processing Temperature ◽  
Izod Impact Strength ◽  
Izod Impact

<p>Organically modified nanoclay (cation exchange capacity of 135 to 145 meq/100 g) was used as nanophase reinforcement for fabrication of nylon-6 nanocomposites. The thickness of clay platelets varied form 1.2 nm to 1.3 nm with 3.485 nm as d-spacing. Nylon 6/nanoclay composites were fabricated with loading of 2.5, 5.0 and 10 wt.% nanoclay via direct melt compounding technique using conventional twinscrew extruder. Processing temperature profile from hopper to header was 230-240-245-260 °C and screw speed was maintained at 180 rpm. The nylon 6/clay nanocomposites were characterized for thermal and mechanical properties. The structural properties were characterized by Differential Scanning Calorimeter (DSC) and X-ray diffraction analysis. The tensile fracture morphology was analyzed by using Scanning Electron Microscope (SEM). DSC nonisothermal curves show an increase in the crystallization temperature with increasing degree of crystallinity. The crystallization rate of the nanoclay reinforced nylon 6 composites was found to be significantly faster than that for the pristine nylon 6 and suggests that the layered silicates act as nucleating centers. XRD result shows that addition of nanoclay by this technique favors the formation of γ-crystalline phase in nylon 6/nanoclay composites. Due to this, there is substantial enhancement in the tensile strength and Izod impact strength. A variation from 700 to 971 Kg/cm<sup>2</sup> for tensile strength and from 3.0 to 3.4 Kg.cm/cm of notch for Izod impact strength. The detailed results are presented.</p>

Effect of the Addition of a Brazilian Sodium Smectite Clay in Toughened Nylon-6

2014 ◽  
Vol 798-799 ◽  
pp. 743-746
Author(s):  
Douglas Morais ◽  
Nicole Raymonde Demarquette ◽  
Ticiane Sanches Valera
Keyword(s):  
Impact Strength ◽  
Nylon 6 ◽  
Mechanical Tests ◽  
X Ray Diffraction ◽  
Smectite Clay ◽  
X Ray ◽  
Izod Impact Strength ◽  
The Matrix ◽  
Izod Impact ◽  
Vinyl Butyral

In this work, the effect of the incorporation of a sodium smectite clay (Brasgel) in Nylon-6 toughened with Poly (vinyl butyral) film (PVB film) was evaluated. The composites contain 60 wt.% of Nylon-6, 40 wt.% of PVB film and 5 wt.% of clay, relative to the total weight of the mixture. The clay was previously purified by sedimentation, and dried in a spray-dryer at 150°C. The composites were obtained by extrusion, in two steps: step 1 - mixture of nylon-6 with clay (called master of nylon-6) and step 2 - mixture of master of nylon-6 with PVB film. The clay was characterized by X-ray diffraction and X-rayfluorescence. The composites were characterized by mechanical tests (tensile and notched Izod impact strength), X-ray diffraction and scanning electron microscopy (SEM). The composites showed significant increase in the values of the notched Izod impact strength, when compared to the ones for pure nylon-6, and kept the stiffness of the matrix phase.

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 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.

scholarly journals PHYSICAL AND MECHANICAL AND THERMOPHYSICAL PROPERTIES OF POLYMER COMPOSITES BASED ON RECYCLED POLYPROPYLENE FILLED WITH RICE HUSK

2020 ◽  
Vol 17 (35) ◽  
pp. 703-712
Author(s):  
Aynur R. SADRITDINOV ◽  
Aygiz G. KHUSNULLIN ◽  
Artur A. PSYANCHIN ◽  
Elena M. ZAKHAROVA ◽  
Vadim P. ZAKHAROV
Keyword(s):  
Tensile Strength ◽  
Impact Strength ◽  
Polymer Composites ◽  
Rice Husk ◽  
Impact Energy ◽  
Thermophysical Properties ◽  
Modulus Of Elasticity ◽  
Izod Impact Strength ◽  
Recycled Polypropylene ◽  
Izod Impact

The relevance of the study is due to the deterioration of the environmental situation in the world associated with an increase of plastic waste, which determines the feasibility of developing methods for their involvement in recycling for the production of plastic products. Thereby, this article is aimed at studying the patterns of changes in the physical and mechanical and thermophysical properties of polymer composites based on recycled polypropylene filled with rice husk in the absence of compatibilizers. The leading approach to the study of this problem is the determination of the modulus of elasticity in flexure, tensile strength at break, strain-to-failure, and bending strain, bending temperature under load and Vicat softening temperature, Charpy V-notch impact energy and Izod impact strength, as well as the thermophysical parameters of polymer composites. The article shows that with an increase in the content of rice husk in a polymer composite based on recycled polypropylene, an increase in the modulus of elasticity in flexure occurs. Filling polypropylene with rice husk slightly reduces the tensile strength and significantly reduces the elasticity of the polymer. Recycled polypropylene has a higher Charpy V-notch impact energy than Izod impact strength. Filling the polymer with rice husk leads to a decrease in impact strength according to both Charpy and Izod, and with a compound content of more than 5 phr, both of these indicators are almost identical. In this case, there is a slight increase in the onset temperature of the composites, which determines their thermal stability during processing. It was revealed that polymer composites containing 2-10 mass parts of rice husk are characterized by an increased degree of crystallinity of the polymer phase. The materials of the article are of practical value for the processing of recycled thermoplastic polymers, as well as the creation of biodegradable polymer composites.

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.

Investigation of Blends of sPS/B30, B30/iPP and sPS/iPP/B30: Mechanical and Thermal Properties

2014 ◽  
Vol 541-542 ◽  
pp. 288-292
Author(s):  
Xiao Yu Yang ◽  
Xin Hua Wu ◽  
Yang Feng Zhao ◽  
Qi Gu Huang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Thermal Properties ◽  
Impact Strength ◽  
Mechanical And Thermal Properties ◽  
Izod Impact Strength ◽  
Impact Tester ◽  
Izod Impact ◽  
Better Than

The mechanical and thermal properties of B30/iPP, B30/sPS and sPS/iPP/B30 blends were investigated by unnotched izod impact tester, DSC and tensile strength tester. The results showed that the mechanical properties of B30/iPP, B30/sPS and sPS/iPP/B30 blends were better than that of homopolymer B30 and sPS. The blend of sPS/B30 with the ratio of 80/20, unnotched izod impact strength was 41.2 KJ/m2, tensile strength 32.5 MPa. The blend of B30/iPP with the ratio of 90 to 10, the unnotched izod impact strength was 46.2 KJ/m2 and the tensile strength 27.2 MPa; and the blend of sPS/iPP/B30 with the ratio of 90/10/10, the unnotched izod impact strength was 42.3 KJ/m2, and the tensile strength 33.7 MPa. DSC result showed that in the blend system of B30/iPP and sPS/iPP/B30 the iPP-Tg region shifted toward the sPS-Tg. However, the sPS-Tg shifted inward slightly.

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