Polyurea – The New Generation of Lining and Coating

2010 ◽  
Vol 95 ◽  
pp. 85-86 ◽  
Author(s):  
Eitan Zur
Keyword(s):  
Mechanical Strength ◽  
Chemical Resistance ◽  
Wastewater Treatment Plants ◽  
New Technology ◽  
Setting Time ◽  
Hydrolytic Stability ◽  
Moisture Sensitivity ◽  
High Mechanical Strength ◽  
The World ◽  
New Generation

Few seconds setting time, superior flexibility along with high mechanical strength and moisture insensitivity are only a small portion of the characteristics of the unique technology named Polyurea. This technology is on the move around the globe and recently some intriguing projects were done also in Israel. This paper is a brief introduction of the Polyurea technology. Nearly two decades ago, a new technology was introduced to the world. It was not an innovative semi-flexible Epoxy, with a better UV stability. Nor was it a new kind of fast set Urethane, with improved chemical resistance. Rather, it was a new generation of polymers, which is free of some of the drawbacks of the old conventional coatings. It is well known, for example, that epoxies excels in chemical resistance, high mechanical strength and hardness. However, it is also known that in spite of the great advance of recent years, epoxies still tend to be brittle and crack due to thermal stress and other causes. Chalking and yellowing caused by UV exposure is another notorious characteristic of Epoxies. Urethanes on the other hand are very flexible and have excellent weatherabilty. But what about hydrolytic stability, moisture sensitivity during the application and chemical resistance issues? There is much room for improvement on this regard. Polyurea combines high mechanical strength, unusual elongation, excellent water resistance and good chemical resistance. UV stability of some Polyureas is nothing less than high quality aliphatic urethanes. Therefore, in recent years the Polyurea technology is on the move all over the world in diverse fields, such as the building, petrochemical and chemical industries, corrosion protection, flooring, water systems and wastewater treatment plants, bridges and tunnels, etc.

Physical, chemical, thermal, and mechanical assessments of Roselle-reinforced composites

2012 ◽  
Vol 32 (2) ◽  
Author(s):  
Ashish Chauhan ◽  
Balbir Singh
Keyword(s):  
Mechanical Strength ◽  
Moisture Absorption ◽  
Chemical Resistance ◽  
Phenol Formaldehyde ◽  
Graft Copolymers ◽  
Young Modulus ◽  
Hibiscus Sabdariffa ◽  
Reinforced Composites ◽  
High Mechanical Strength ◽  
Physicochemical Changes

Abstract Hibiscus sabdariffa stem fiber has 73.9% cellulose, high mechanical strength and is found in abundance throughout the world. Hibiscus sabdariffa graft copolymers were synthesized, characterized by FTIR, XRD, TGA, DTA, and SEM techniques, and evaluated for physicochemical changes in properties such as moisture absorption, chemical resistance against 1 n NaOH and 1 n HCl. These graft copolymers were reinforced in phenol-formaldehyde polymer matrix to form biocomposites that were characterized by advanced techniques and evaluated for physicochemicothermal resistance. The mechanical strength was accessed on the basis of hardness, flexural strength, Young modulus, and stress at the limit of proportionality, which was found to be high. These novel materials could have numerous scientific and industrial application to pave the way for development of technology.

High temperature and wear resistant materials with enhanced performance propertie

2020 ◽  
pp. 30-34
Author(s):  
B. N. Satbaev ◽  
A. Kh. Nurumgaliev ◽  
Yu. I. Shishkin ◽  
E. O. Aimbetova ◽  
N. T. Shalabaev ◽  
...  
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Strength ◽  
Chemical Resistance ◽  
New Technology ◽  
High Chemical ◽  
Wear Resistant ◽  
High Chemical Resistance

The results of studies of obtaining self-sintering refractory masses are presented. A new technology for their manufacture is proposed. The basis of the resulting masses are baritecontaining components (barite or viterite concentrates). High chemical resistance, refractoriness, mechanical strength, hardness and wear resistance determine the scope of their application ― the manufacture of refractory products, linings, putties and concrete.

Fabrication of tough epoxy with shape memory effects by UV-assisted direct-ink write printing

Soft Matter ◽  
2018 ◽  
Vol 14 (10) ◽  
pp. 1879-1886 ◽  
Author(s):  
Kaijuan Chen ◽  
Xiao Kuang ◽  
Vincent Li ◽  
Guozheng Kang ◽  
H. Jerry Qi
Keyword(s):  
Thermal Stability ◽  
3D Printing ◽  
Mechanical Strength ◽  
Shape Memory ◽  
Chemical Resistance ◽  
Shape Memory Polymers ◽  
Excellent Thermal Stability ◽  
High Mechanical Strength ◽  
Practical Applications ◽  
Shape Memory Effects

3D printing of epoxy-based shape memory polymers with high mechanical strength, excellent thermal stability and chemical resistance is highly desirable for practical applications.

Students in the New Millennium

2013 ◽  
pp. 118-139
Author(s):  
Jianxiong Wu
Keyword(s):  
Emerging Technologies ◽  
New Technology ◽  
Educational Practice ◽  
Clear Understanding ◽  
Black And White ◽  
The Past ◽  
The World ◽  
New Generation ◽  
New Millennium

Vast and fast technological advancements mark the new millennium. New emerging technologies are changing the world and our society at a magnitude and scope never witnessed before. Who are our students in this new millennium? What do they look like? Are they a fundamentally different new generation as some claim, or do they still look similar to us in many ways? A clear understanding of the characteristics of our students is vitally important for our educational practice. The current study was conducted to contribute to this understanding. The findings of the study show that while students nowadays do enjoy a much broader access to new technology than students of the past, they still look similar to us in many ways. As educators, it is important for us to treat our students as individuals instead of just labeling them and placing them in a black and white dichotomy.

scholarly journals The New Social Necessity – Data Privacy

2021 ◽  
Author(s):  
Aaloka Anant ◽  
Ramjee Prasad
Keyword(s):  
Social Structure ◽  
Data Privacy ◽  
Technology Development ◽  
New Technology ◽  
Intelligent Machines ◽  
Business Operations ◽  
Use Of Technology ◽  
The World ◽  
Major Shift ◽  
New Generation

Data Privacy is a more prominent necessity than ever in the world we live. The world is so much connected with use of technology than ever in the course of history. Intelligent Machines and technology with thinking power of its own is defining new standards of business operations. Increasing dependency of new generation of people on social technology platforms and digital economy, comes with a big demand from economic and social structure to not only adopt but embed technology. In the same way technology to adopt the social practices like a central governance, democratic values and privacy interlaced with this structure. This paper presents the argument that the protection of privacy of the data subjects is a must have in order to retain the current social structure. We must have a way of using information out of the vast datasets without impacting individuals, indicating a major shift in technology development processes in practice.  The new social necessity drives the new technology necessity.    

Penerapan Rinfo Sebagai Media Pendukung Untuk Proses Pembelajaran Pada Perguruan Tinggi Raharja

CCIT Journal ◽  
2014 ◽  
Vol 8 (1) ◽  
pp. 101-115
Author(s):  
Untung Rahardja ◽  
Khanna Tiara ◽  
Ray Indra Taufik Wijaya
Keyword(s):  
Learning Process ◽  
Human Life ◽  
Learning Tools ◽  
Integrated Learning ◽  
Civilizing Process ◽  
The World ◽  
The Future ◽  
Two Factors ◽  
Life Education ◽  
New Generation

Education is an important factor in human life. According to Ki Hajar Dewantara, education is a civilizing process that a business gives high values ??to the new generation in a society that is not only maintenance but also with a view to promote and develop the culture of the nobility toward human life. Education is a human investment that can be used now and in the future. One other important factor in supporting human life in addition to education, which is technology. In this globalization era, technology has touched every joint of human life. The combination of these two factors will be a new innovation in the world of education. The innovation has been implemented by Raharja College, namely the use of the method iLearning (Integrated Learning) in the learning process. Where such learning has been online based. ILearning method consists of TPI (Ten Pillars of IT iLearning). Rinfo is one of the ten pillars, where it became an official email used by the whole community’s in Raharja College to communicate with each other. Rinfo is Gmail, which is adapted from the Google platform with typical raharja.info as its domain. This Rinfo is a medium of communication, as well as a tool to support the learning process in Raharja College. Because in addition to integrated with TPi, this Rinfo was connected also support with other learning tools, such as Docs, Drive, Sites, and other supporting tools.

The Process of Globalization and Its Impact on Media

2016 ◽  
Vol 1 (4) ◽  
pp. 150
Author(s):  
Veton Zejnullahi
Keyword(s):  
New Technology ◽  
World Order ◽  
Modern Society ◽  
Media Access ◽  
Four Corners ◽  
The World ◽  
The Media ◽  
The Republic ◽  
Human Eyes ◽  
The Impact

The process of globalization, which many times is considered as new world order is affecting all spheres of modern society but also the media. In this paper specifically we will see the impact of globalization because we see changing the media access to global problems in general being listed on these processes. We will see that the greatest difficulties will have small media as such because the process is moving in the direction of creating mega media which thanks to new technology are reaching to deliver news and information at the time of their occurrence through choked the small media. So it is fair to conclude that the rapid economic development and especially the technology have made the world seem "too small" to the human eyes, because for real-time we will communicate with the world with the only one Internet connection, and also all the information are take for the development of events in the four corners of the world and direct from the places when the events happen. Even Albanian space has not left out of this process because the media in the Republic of Albania and the Republic of Kosovo are adapted to the new conditions under the influence of the globalization process. This fact is proven powerful through creating new television packages, written the websites and newspapers in their possession.

DMV 59

Alloy Digest ◽  
2009 ◽  
Vol 58 (8) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Mechanical Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Mechanical Strength ◽  
Temperature Performance

Abstract DMV 59 is the material of choice for a wide variety of applications where significant corrosion resistance and high mechanical strength is necessary. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: Ni-672. Producer or source: Mannesmann DMV Stainless USA Inc.

BOFORS 2RM2

Alloy Digest ◽  
1965 ◽  
Vol 14 (5) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Low Temperature ◽  
Mechanical Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Cast Steel ◽  
Heat Treating ◽  
High Mechanical Strength ◽  
Temperature Performance

Abstract BOFORS 2RM2 is a hardenable stainless cast steel having good weldability, high mechanical strength and improved corrosion resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low temperature performance and corrosion resistance as well as casting, forming, heat treating, machining, and joining. Filing Code: SS-169. Producer or source: Aktiebolaget Bofors.

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