Antistatic surface properties of plastics using donor-accepter molecular compounding antistatic agent

2018 ◽  
Vol 38 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Takuro Watanabe ◽  
Hiroyoshi Hamanaka ◽  
Tomomi Sano ◽  
Hiroshi Ito
Keyword(s):  
Tensile Strength ◽  
Optical Communication ◽  
Surface Resistance ◽  
Plastic Material ◽  
Transparent Plastic ◽  
High Transparency ◽  
Antistatic Property ◽  
Plastic Composite ◽  
Excellent Property ◽  
Content Range

Abstract In order to obtain transparent plastic material with antistatic property for optical communication application, cyclo olefin polymer (COP)/BN105 composite materials prepared by using injection molding have been evaluated. Surface resistance of the molded product decreased to 2×1011 Ω/sq along with an increase in BN105 content range up to 2 wt%. The samples showed excellent property to prevent the surface from dust adhesion. In addition, the samples containing BN105 less than 5 wt% did not show any decrease in transmittance without any significant change of tensile strength. The results indicate COP/BN105 as a promising plastic composite material with sufficient antistatic property as well as high transparency.

scholarly journals Right paraduodenal hernia with extensive bowel gangrene treated with staged surgery: a Bogota bag followed by resection in a low-resource setting

2021 ◽  
Vol 14 (4) ◽  
pp. e239250
Author(s):  
Vijay Anand Ismavel ◽  
Moloti Kichu ◽  
David Paul Hechhula ◽  
Rebecca Yanadi
Keyword(s):  
Plastic Material ◽  
Successful Outcome ◽  
Paraduodenal Hernia ◽  
Transparent Plastic ◽  
Low Resource ◽  
Entire Small Bowel ◽  
Resource Setting ◽  
Low Resource Setting ◽  
Right Paraduodenal Hernia ◽  
Bowel Gangrene

We report a case of right paraduodenal hernia with strangulation of almost the entire small bowel at presentation. Since resection of all bowel of doubtful viability would have resulted in too little residual length to sustain life, a Bogota bag was fashioned using transparent plastic material from an urine drainage bag and the patient monitored intensively for 18 hours. At re-laparotomy, clear demarcation lines had formed with adequate length of viable bowel (100 cm) and resection with anastomosis was done with a good outcome on follow-up, 9 months after surgery. Our description of a rare cause of strangulated intestinal obstruction and a novel method of maximising length of viable bowel is reported for its successful outcome in a low-resource setting.

Effect of press force in tensile strength and surface quality of press formed wood plastic composite products

2019 ◽  
Author(s):  
Sami Matthews ◽  
Amir Toghyani ◽  
Panu Tanninen ◽  
Marko Hyvärinen ◽  
Ville Leminen ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Surface Quality ◽  
Wood Plastic Composite ◽  
Plastic Composite

scholarly journals DIMENSIONAL STABILITY AND TENSILE STRENGTH OF WOOD PLASTIC COMPOSITE FORMED WITH HIGHER PLASTIC CONTENT

2020 ◽  
Vol 4 (3) ◽  
pp. 609-614
Author(s):  
K. J. Lawal ◽  
A. Oluyege ◽  
T. S. Bola ◽  
K. S. Aina ◽  
B. C. Falemara ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Water Absorption ◽  
Wood Species ◽  
Dimensional Stability ◽  
Strength Properties ◽  
Thickness Swelling ◽  
Plastic Composite ◽  
Wood Particles ◽  
Mixing Proportion ◽  
Waste Particles

This study investigated the dimensional stability and strength properties of plastic bonded composites produced from wood waste particles and polyethylene using extruder. The composites were produced from wood species such as such as: Triplochiton scleroxylon, Terminalia superba and Gmelina arborea at a mixing proportion of 60:40 (plastic/wood) on a weight by weight basis. Evaluation of properties was carried out in accordance with the American Standard Testing Methods of 570 and 790 to determine the dimensional stability and strength properties of the composites. The results of findings revealed that water absorption and thickness swelling of the wood composites ranged from 10.08% to 15.36% and 4.33% to 5.58% respectively after 24hours and 48hours immersion in water. Tensile strength also ranged between 29.4MPa and 45.6MPa. Composite board made from T. superba wood particles had the lowest significant water absorption (10.08%), thickness swelling (4.33%) and highest significant tensile strength (45.6MPa) compared to composites produced from G. arborea and T. scleroxylon wood particles. It was observed that high density wood species exhibit lower water intake, lower thickness swelling and higher tensile strength, while the contrary is the case for lower density wood species. In conclusion, the three tree species used for the study could be recommended for the production of wood composite like particle board, fibre board, wood cement boards and others.

Evaluation of a Plastic Composite Produced with Residues of Sugarcane Bagasse and Polypropylene without Additives

2015 ◽  
Vol 1088 ◽  
pp. 407-410
Author(s):  
Rosane A.G. Battistelle ◽  
Barbara Stolte Bezerra ◽  
Ivaldo D. Valarelli ◽  
Luiz A. Melgaço N. Branco ◽  
Eduardo Chahud ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Water Absorption ◽  
Sugarcane Bagasse ◽  
Mechanical Characterization ◽  
Impact Resistance ◽  
Thickness Swelling ◽  
Plastic Composite ◽  
Recycled Polypropylene ◽  
Tension Tests ◽  
Absorption Thickness

In this research the aim was produce and evaluate a plastic composite using recycled polypropylene (PP) and fibers from sugarcane bagasse residues (SC), without the use of additives. This analysis was based on laboratorial tests for physical and mechanical characterization, according to the standards ASTM D256-00, D638-101 and D570-98 were analyzed: water absorption, thickness swelling, impact resistance, tensile strength and its correspondent deformation. For comparison it was elaborated three different compositions: 100% PP; 80% PP+20%SC; 70%PP+30%SC. The results indicate a positive correlation with the content of fiber and water absorption and thickness swelling. In the tension tests, the composites with fibers increase the value of resistance for physical efforts, bringing advantages as durability and integrity of the material, showing a viability of the composites.

Antistatic properties of transparent plastics using a donor-accepter molecular compound antistatic agent

2018 ◽  
Vol 38 (6) ◽  
pp. 555-561
Author(s):  
Takuro Watanabe ◽  
Tomomi Sano ◽  
Hiroshi Ito
Keyword(s):  
Composite Material ◽  
Optical Communication ◽  
Electric Resistivity ◽  
Molecular Compound ◽  
Transparent Plastic ◽  
Distribution Measurement ◽  
Transmission Electron ◽  
Dispersion State ◽  
Base Polymer ◽  
Injection Molded

AbstractIn a study of antistatic transparent plastic for optical communication purposes, we previously prepared cyclo olefin polymer (COP)/BN105 composite material and confirmed the improvement of dust resistance as well as good antistatic property on the surface of the molded product. In this study, BN105 composite material using fluorene-based polymer (FBP) as base polymer was newly prepared and the injection molded product was evaluated. In the results, the surface electric resistivity of the molded product was reduced to 6.69×1011Ω/sq and good dust resistance similar to that of COP/BN105 was shown. In addition, the dispersion state of additive molecules inside the BN105 composite molded product was observed by transmission electron microscope, and molecule weight distribution measurement was also conducted for the molded product.

The Effect of MAPE Compatibilizer Agent on the Tensile Strength of Recycled PET/HDPE Plastic Composite

2019 ◽  
pp. 484-489
Author(s):  
Nik Ruqiyah Nik Hassan ◽  
Noor Mazni Ismail ◽  
Dewan Muhammad Nuruzzaman ◽  
Noraini Mohd Razali ◽  
Suriati Ghazali
Keyword(s):  
Tensile Strength ◽  
Recycled Pet ◽  
Plastic Composite ◽  
Compatibilizer Agent

Microstructure and Mechanical Properties of Eco-2024-T3 Aluminum Alloy

2012 ◽  
Vol 602-604 ◽  
pp. 623-626 ◽  
Author(s):  
Seon Ho Kim ◽  
Kyu Sik Kim ◽  
Shae K. Kim ◽  
Young Ok Yoon ◽  
Kyu Sang Cho ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Yield Strength ◽  
Fatigue Limit ◽  
Tensile Tests ◽  
Fatigue Tests ◽  
Economic Advantage ◽  
Microstructure And Mechanical Properties ◽  
Excellent Property

In this study, the microstructures and mechanical properties of the recently developed Eco-2024-T3 alloy were examined. Eco-2024 is made using Eco-Mg (Mg-Al2Ca) in place of element Mg during the manufacture of alloy 2024-T3. This is an alloy that has economic advantage and excellent properties. Alloy Eco-2024 showed smaller crystal grains that were distributed more evenly compared to the existing alloy 2024-T3. It consisted of Al matrices containing minute amounts of Al2CuMg, Al2Cu, and Ca phases and showed microstructures with reduced amounts of Fe phases or oxide. As a result of tensile tests, this alloy exhibited yield strength of 413 MPa, tensile strength of 527 MPa, and elongation of 15.4%. In other words, it showed higher strength than the existing alloy 2024 but was similar to the existing alloy 2024 in terms of elongation. In fatigue tests, alloy Eco-2024-T3 recorded fatigue limit of 330 MPa or around 80% of its yield strength; this is a much more excellent property compared to the existing alloy 2024-T3, which has fatigue limit of 250 MPa. Based on the aforementioned results, the correlation between the excellent mechanical properties of alloy Eco-2024-T3 and its microstructure was examined.

Optically Transparent Nanocomposite Based on Cellulose Nanofibers from Newspapers and Polyurethane

2012 ◽  
Vol 174-177 ◽  
pp. 905-911 ◽  
Author(s):  
Xue Ting Li ◽  
Da Gang Li ◽  
Li Xu ◽  
Yu Mei Wang ◽  
Dong Liang Lin
Keyword(s):  
Tensile Strength ◽  
Elastic Modulus ◽  
Cellulose Nanofibers ◽  
Three Dimensional ◽  
High Strength ◽  
Wood Powder ◽  
Sem Images ◽  
High Transparency ◽  
Dimensional Network ◽  
Optically Transparent

The goal of this paper was to develop an optically transparent nanocomposite with high strength by reinforcing polyurethane (PU) with cellulose nanofibers (CNFs) extracted from newspapers. The FE-SEM images show that through chemical and mechanical treatments, newspaper CNFs with diameters ranged from 20 to 100 nm and an aspect ratio of over 1000 were successfully obtained as well as wood powder. They were cross-linked together and formed a special three-dimensional network structure. The nanocomposite was fabricated by impregnating the CNF sheet into transparent PU resin and cured under ultraviolet. Results demonstrate that the transparency of newspaper CNF/PU nanocomposite was as high as wood CNF/PU nanocomposite. The elastic modulus and tensile strength of newspaper CNF/PU composite were increased roughly eighteen times and two times respectively while retaining the high transparency of PU, which was nearly the same with wood CNF/PU composite.

Effects of Atmospheric Plasma Treatment on the Surface Properties of Wood-Plastic Composites

2013 ◽  
Vol 718-720 ◽  
pp. 176-185 ◽  
Author(s):  
Kimmo Hämäläinen ◽  
Timo Kärki
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Contact Angle ◽  
Tensile Strength ◽  
Plasma Treatment ◽  
Atmospheric Plasma ◽  
Wood Plastic Composite ◽  
Plastic Composite ◽  
Plastic Composites ◽  
Scanning Electron

Wood-plastic composites are a group of materials with potential to penetrate markets currently dominated by plastic or wood products. The surface properties of wood-plastic composite materials have been found to be similar to those of polyolefin materials, thereby presenting a challenge to the use of adhesive joining methods. Plasma chemistry can be performed to improve the adhesive properties of polyolefin materials. In this research, the effect of atmospheric plasma treatment on polypropylene and spruce (Picea abies) wood-plastic composite surfaces is investigated by contact angle measurement with sessile drop method and tensile strength tests of glued samples. The plasma treatment is performed on extruded WPC profiles. Confocal Raman microscopy and scanning electron microscopy are used for analysis of the material surface. The results show an increase in the contact angle of plasma treated WPC materials and an improvement in the tensile strength of glued samples following plasma treatment. Observation of the Raman spectrum indicates an increase in polar groups after plasma treatment. Scanning electron microscopy shows changes in the surface of the treated samples, which can be seen as increased porosity, possibly due to etching as a result of the plasma treatment. It is concluded that atmospheric plasma treatment for adhesion improvement of WPC materials can therefore be applied successfully, although it has a mechanical effect on the surface of the material.

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