Preparation and Properties of Epoxy Matrix for Composite Cable Core

2011 ◽  
Vol 239-242 ◽  
pp. 2606-2611
Author(s):  
Xian Fu Li ◽  
Lai Chen ◽  
Ting Ting Zeng ◽  
Jia Bao Zhang ◽  
Rui Cheng Bai ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Electron Microscope ◽  
Carbon Fibers ◽  
Main Body ◽  
Curing Agent ◽  
Resin System ◽  
Elongation At Break ◽  
The Matrix ◽  
Heat Deformation ◽  
Scanning Electron

According to the requirements of aluminum conductor composite cores, a kind of resin system was developed with TGDDM as main body, and self-made flexible epoxy SUC-1 as auxiliary, plus methyl hexahydrophthalic anhydride as curing agent. The gel rate of the system was high enough to meet the demands of pultrusion technique. The heat deformation temperature of cured sample reached 194°C, and the tensile strength achieved 62.95Mpa. The elongation at break matched that of carbon fibers. The interfacial bonding between the matrix and the fibers, observed by scanning electron microscope, was tight without debonding phenomenon.

scholarly journals Splitting of Islands-in-the-Sea Fibers (PA6/COPET) during Hydroentangling of Nonwovens

2007 ◽  
Vol 2 (4) ◽  
pp. 155892500700200 ◽  
Author(s):  
Mbwana Suleiman Ndaro ◽  
Xiang-yu Jin ◽  
Ting Chen ◽  
Chong-wen Yu
Keyword(s):  
Tensile Strength ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Water Jet ◽  
Elongation At Break ◽  
Sem Micrographs ◽  
Fiber Splitting ◽  
Data Analyses ◽  
Scanning Electron

This paper summarizes the investigations of hydroentangled islands-in-the-sea (PA6/COPET) fiber webs. An increase in water jet pressure improved the tensile strength and fiber splitting while elongation at break decreased. Scanning Electron Microscope (SEM) micrographs and ANOVA (MS Excel ™) were used for characterizing fiber splitting and data analyses respectively. It can be concluded that with a new innovation in spinnerette design and modification of co-polyester structure, PA6/COPET, fibers can be split in the hydroentanglement process without dissolution of the sea component.

Mechanical and Vulcanization Behaviors of SBR/N330 and SBR/N330/PBMCN Nanocomposites

2011 ◽  
Vol 230-232 ◽  
pp. 103-106
Author(s):  
Hai Tao Liu ◽  
Jing Feng Zhang ◽  
Yi Guang Tian ◽  
Xue Jun Weng ◽  
Shi E Lin
Keyword(s):  
Tensile Strength ◽  
Electron Microscope ◽  
Mass Fraction ◽  
Partial Replacement ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Melt Mixing ◽  
Elongation At Break ◽  
Styrene Butadiene ◽  
Scanning Electron

Mechanical and vulcanization behaviors of styrene-butadiene rubber(SBR)/N330 and SBR/N330/PBMCN nanocomposites were investigated via partial replacement of SBR with pyrophyllite based modified composite nanopowder(PBMCN), which were prepared by melt mixing procedure. Results show a fairly good dispersion of PBMCN in the SBR/N330/PBMCN composites characterized by field-emission scanning electron microscope (FESEM). Mechanical and vulcanization behaviors of the as-abtained pruducts were measured according to GB/T 528-2009 and GB/T 16584-1996, respectively. Near properties in tensile strength, elongation at break and vulcanization behaviors were observed in SBR/N330/PBMCN nanocomposites when SBR was partially replaced by PBMCN for 8% mass fraction. A possible reinforcement mechanism of PBMCN to SBR/N330/PBMCN nanocomposites is also dicussed based on the experiment.

Properties of Compatibilized SAN/NR Blends

2012 ◽  
Vol 488-489 ◽  
pp. 62-66
Author(s):  
Jareenuch Rojsatean ◽  
Supakij Suttireungwong ◽  
Manus Seadan
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Electron Microscope ◽  
Maleic Anhydride ◽  
Impact Strength ◽  
Melt Blending ◽  
Elongation At Break ◽  
Reactive Agents ◽  
Internal Mixer ◽  
Scanning Electron

The blend of poly(styrene-co-acrylonitrile) (SAN) and natural rubber (NR) is immiscible and incompatible which lead to poor mechanical properties. Many methods can be carried out to improve the compatibility. In this work, the potential of various reactive compatibilizers in SAN and NR blend was explored. The morphological and mechanical properties were compared. The melt blending of SAN and NR were prepared in an internal mixer with various types of reactive agent such as styrene-co-maleic anhydride (SMA), maleic anhydride (MA), peroxide and mixed reactive agents. The morphological textures of the blends were investigated by scanning electron microscope. Mechanical properties including tensile strength, impact strength and elongation at break were measured. The results of morphological observations revealed that SAN/NR blend with reactive agent, the mixture of SMA and MA show the smallest and the most uniform dispersed NR particles, where the size of NR particle is about 1 µm. The mechanical properties of the blends revealed impact strength and elongation at break were increased with addition of reactive agents. SAN/NR blend with the mixture of SMA and MA showed the highest elongation at break but it had lower impact strength than the blend with SMA.

MORFOLOGI DAN PROPERTI CAMPURAN KARET ALAM/POLYPROPYLENE YANG DIVULKANISASI DINAMIK DALAM INTERNAL MIXER

REAKTOR ◽  
2007 ◽  
Vol 11 (2) ◽  
pp. 71
Author(s):  
Bahruddin Bahruddin ◽  
Sumarno Sumarno ◽  
Gede Wibowo ◽  
Nonot Suwarno
Keyword(s):  
Differential Scanning Calorimetry ◽  
Tensile Strength ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Scanning Calorimetry ◽  
Elongation At Break ◽  
Izod Impact ◽  
Internal Mixer ◽  
Scanning Electron

Morfologi dan properti campuran (blend) karet alam jenis SIR-20/polypropylene (NR/PP) yang divulkanisasi dinamik dalam internal mixer telah dipelajari. Blend dibuat dengan rasio berat NR/PP 10/90, 20/80, 50/50, 60/40 dan 70/30 dan komposisi sulfur 3 dan 5 phr (per hundred rubber). Proses pencampuran dilakukan pada suhu 180 oC dan kecepatan rotor 60 rpm. Analisa morfologi menggunakan SEM (Scanning Electron Microscope) dan DSC (Differential Scanning Calorimetry). Properti mekanik yang diukur meliputi tensile strength, elongation at break, izod impact, tearing dan hardness, berdasarkan standar ASTM. Didapatkan bahwa peningkatan rasio NR/PP menghasilkan distribusi partikel NR yang makin merata dengan ukuran yang makin kecil. Morfologi blend menunjukkan sistem dua fasa dan vulkanisasi fasa NR terjadi secara parsial dalam matrik PP. Peningkatan rasio NR/PP dan komposisi sulfur dapat meningkatkan properti elongation at break, namun menurunkan properti tensile strength, izod impact, tearing dan hardness. Elongation at break tertinggi yang dapat diperoleh adalah 70% pada rasio blend NR/PP 70/30 dan komposisi sulfur 5 phr.

scholarly journals Composite fabrication from fat extracted limed fleshing: solid waste management in tannery

2021 ◽  
Vol 56 (3) ◽  
pp. 215-222
Author(s):  
MA Hashem ◽  
MHR Sheikh ◽  
Rahamatullah ◽  
M Biswas ◽  
MA Hasan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Fourier Transform ◽  
Electron Microscope ◽  
Solid Waste ◽  
Solid Waste Management ◽  
Elongation At Break ◽  
Composite Fabrication ◽  
Negative Effect ◽  
Scanning Electron

In tannery, fleshing is the unavoidable solid waste which has negative effect on the environment. Fleshing contains fat, and protein.In this work, fat extracted fleshing was used for composite fabrication. After collecting limed fleshing, fat was extracted in water bath.The fat extracted fleshing was dried, ground,passes through 80-mesh and homogenized.For proper adhesion and bonding with fleshing powder, epoxy resin and hardener were mixed at various ratios and poured onto an aluminum sheetfor 24 h curing. The mechanical properties of the composite were investigated by tensile strength, elongation at break, and Young’s modulus. The composite was characterized by Fourier Transform Infrared (FTIR) Spectroscopy and Scanning Electron Microscope (SEM) for related functional groups and surface analysis. The investigation provided satisfactory information on the proper bonding of the fleshing powder and resin/hardener. The approach explores the valorization of he waste for managing solid waste in the tannery. Bangladesh J. Sci. Ind. Res.56(3), 215-222, 2021

Mechanical and Morphology Properties of Polypropylene/ Nano-CaCO3 Composites

2013 ◽  
Vol 774-776 ◽  
pp. 625-628
Author(s):  
Teng Fei Shen ◽  
Fa Chao Wu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Electron Microscope ◽  
Maleic Anhydride ◽  
Interfacial Adhesion ◽  
Tensile Tests ◽  
Melt Blending ◽  
Elongation At Break ◽  
High Fraction ◽  
Scanning Electron

To provide polypropylene (PP) with better excellent mechanical properties, nanoCaCO3 particles are incorporated into PP matrix by melt blending in this work. To improve the mophology between PP and nanoCaCO3, maleic-anhydride grafted PP (PP-g-MAH) was added as a compatibiliser. The results showed that PP-g-MAH indeed enhanced the interfacial adhesion of PP /nanoCaCO3 composites, which is demonstrated by the measurement of scanning electron microscope (SEM). The results of tensile tests revealed that the inclusion of nanoCaCO3 slightly increased modulus and decreased tensile strength and significantly increased the elongation at break. At high fraction of nanoCaCO3, the elongation at break was declined. The nanosized feature, shape and dispersion conditions of nanoCaCO3, played important roles in determining the performances of PP/nanoCaCO3 composites.

Investigation of the Effect of Mechanical Activation of Powder Components on the Properties of Polyimide Composites

2020 ◽  
Vol 992 ◽  
pp. 353-358
Author(s):  
N.I. Cherkashina ◽  
O.V. Kuprieva ◽  
N.V. Kashibadze
Keyword(s):  
Tensile Strength ◽  
Mechanical Activation ◽  
Relative Elongation ◽  
Tensile Modulus ◽  
Elongation At Break ◽  
Dispersed Filler ◽  
The Matrix ◽  
Polyimide Composites ◽  
Polyimide Matrix ◽  
Scanning Electron

This study presents the results of an analysis of the influence of joint mechanical activation of a polyimide matrix and tungsten (IV) oxide (WO2) on the mechanical properties of their composites. Mechanical activation of the powder components of the matrix and the filler is performed in a vortex jet mill. The ultimate tensile strength, tensile modulus and relative elongation at break of the composites are all investigated. When using mechanical activation, an increase in tensile strength of 9% is observed with a content of 30 wt.% WO2 filler and of 12% with a content of 70 wt.% WO2 filler compared to composites in which the joint mechanical activation of components is not used. Using scanning electron microscopy, it is shown that the use of mechanical activation by dispersing in a jet-vortex mill made it possible to achieve a uniform distribution of highly dispersed filler based on tungsten dioxide in a polyimide matrix.

scholarly journals Study on the Dissolution and Precipitation Behavior of Self-Designed (NbTi)C Nanoparticles Addition in 1045 Steel

Metals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 184
Author(s):  
Hongwei Zhu ◽  
Haonan Li ◽  
Furen Xiao ◽  
Zhixiang Gao
Keyword(s):  
Tensile Strength ◽  
Electron Microscope ◽  
Optical Microscope ◽  
Cast Steels ◽  
Uniform Dispersion ◽  
The Matrix ◽  
Thermo Calc Software ◽  
Particle Strengthening ◽  
1045 Steel ◽  
Addition Amount

Self-designed (NbTi)C nanoparticles were obtained by mechanical alloying, predispersed in Fe powder, and then added to 1045 steel to obtain modified cast steels. The microstructure of cast steels was investigated by an optical microscope, scanning electron microscope, X-ray diffraction, and a transmission electron microscope. The results showed that (NbTi)C particles can be added to steels and occur in the following forms: original ellipsoidal morphology nanoparticles with uniform dispersion in the matrix, cuboidal nanoparticles in the grain, and microparticles in the grain boundary. Calculations by Thermo-Calc software and solubility formula show that cuboidal (NbTi)C nanoparticles were precipitated in the grain, while the (NbTi)C microparticles were formed by eutectic transformation. The results of the tensile strength of steels show that the strength of modified steels increased and then declined with the increase in the addition amount. When the addition amount was 0.16 wt.%, the modified steel obtained the maximum tensile strength of 759.0 MPa, which is an increase of 52% compared with to that with no addition. The hardness of the modified steel increased with the addition of (NbTi)C nanoparticles. The performance increase was mainly related to grain refinement and the particle strengthening of (NbTi)C nanoparticles, and the performance degradation was related to the increase in eutectic (NbTi)C.

Fabrication and Properties of Lignin/Castor Oil-Based Composites

2011 ◽  
Vol 311-313 ◽  
pp. 1535-1538 ◽  
Author(s):  
Hong Juan Wang ◽  
Hai Yan Xiao ◽  
Feng Qiang Sun ◽  
Jian Hua Zhang
Keyword(s):  
Fourier Transform ◽  
Electron Microscope ◽  
Free Radical ◽  
Composite Materials ◽  
Scanning Electron Microscope ◽  
Castor Oil ◽  
Morphology And Structure ◽  
The Matrix ◽  
Facile Route ◽  
Scanning Electron

Novel bio-based composites were developed from maleate castor oil (MACO) and lignin through free radical initiated copolymerization between MACO and diluent monomer styrene(St). The morphology and structure of the composites were characterized by Fourier transform infrared spectroscope (FTIR) and scanning electron microscope (SEM). The mechanical and thermal behaviors of the composites were investigated, which showed the incorporation of a little of lignin in the castor oil based polymer can enhance the tensile properties of the matrix polymer greatly. This work provides a facile route to prepare bio-based composite materials from castor oil and lignin and can be extended to prepare other bio-based materials from reproducible resources.

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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