Degradation of polyester film in alkali solution

2000 ◽  
Vol 78 (14) ◽  
pp. 2454-2463 ◽  
Author(s):  
D. Raghavan ◽  
K. Egwim
Keyword(s):  
Alkali Solution ◽  
Polyester Film

scholarly journals Towards One-Dollar Robots: An Integrated Design and Fabrication Strategy for Electromechanical Systems

Robotica ◽  
2020 ◽  
pp. 1-17
Author(s):  
Wenzhong Yan ◽  
Ankur Mehta
Keyword(s):  
Low Cost ◽  
Integrated Design ◽  
Single Layer ◽  
Constant Current ◽  
Electromechanical Systems ◽  
Robot Controller ◽  
Electrical Oscillation ◽  
Robotic Devices ◽  
Sewing Threads ◽  
Polyester Film

SUMMARY To improve the accessibility of robotics, we propose a design and fabrication strategy to build low-cost electromechanical systems for robotic devices. Our method, based on origami-inspired cut-and-fold and E-textiles techniques, aims at minimizing the resources for robot creation. Specifically, we explore techniques to create robots with the resources restricted to single-layer sheets (e.g., polyester film) and conductive sewing threads. To demonstrate our strategy’s feasibility, these techniques are successfully integrated into an electromechanical oscillator (about 0.40 USD), which can generate electrical oscillation under constant-current power and potentially be used as a simple robot controller in lieu of additional external electronics.

The Permeability of Polyester Film (PEN) to Copper Ions

2013 ◽  
Vol 18 (5) ◽  
pp. 358-368 ◽  
Author(s):  
S. Berdous ◽  
D. Berdous ◽  
N. Saidi-Amroun ◽  
D. E. Akretche ◽  
M. Saidi
Keyword(s):  
Copper Ions ◽  
Polyester Film

POTENTIAL USE COCONUT MILK AS ALTERNATIVE TO ALKALI SOLUTION FOR GEOPOLYMER PRODUCTION

2016 ◽  
Vol 78 (11) ◽  
Author(s):  
Gahasan Fahim Huseien ◽  
Jahangir Mirza ◽  
Mohd Warid Hussin ◽  
Mohd Azreen Mohd Ariffin
Keyword(s):  
Compressive Strength ◽  
Alkali Solution ◽  
Coconut Milk ◽  
Fine Aggregate ◽  
Strength Tests ◽  
Last Stage ◽  
The Cost ◽  
The Impact ◽  
Potential Use ◽  
Control Samples

This work aims to verify the feasibility of utilizing coconut milk as the alkali activator solution in geopolymer production and the impact on mortar properties; geopolymer mortar is  still more expensive than ordinary Portland cement mortar simply because the cost of alkali solution. Coconut milk is extensively available in Malaysia and very rich in potassium and sodium. In this research, the coconut milk was used as alkali solution (100%) at first, and then replaced by NaOH, Na2SiO3 and in the last stage mixed with NaOH and Na2SiO3 at 50%. Normal solution component of Na2SiO3 and NaOH with 8 M, and used as control samples. Binder to fine aggregate (B:A) and solution to binder (S:B) ratios were fixed at 1.5 and 0.30 respectively. Multi blend binder based geopolymer mortar are used in this study. The samples were cured with different conditions, cured at room temperature and oven temperature of 60 and 90°C. Compressive strength tests were carried out to determine the properties of hardened mortar. The samples prepared with coconut milk showed low compressive strength as compared to control samples, The results demonstrated that using coconut milk as alternative to alkali solution in geopolymer industry is not a viable option.

scholarly journals Chemical Creep of Polyester Film

1965 ◽  
Vol 68 (5) ◽  
pp. 998-1001
Author(s):  
Rempei GOTO ◽  
Naomi HAYAMA
Keyword(s):  
Polyester Film
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