This document discusses the use of nanoadditives in lubricants to improve tribological performance. It explains that nanoadditives such as oxides and sulfides can form protective transfer layers on metal surfaces in boundary lubrication regimes. The document discusses how functionalizing nanoadditives can improve their dispersion stability in lubricants. Test results show that lubricants with nanoadditives reduced wear rates in engines and bearings compared to conventional lubricants. In summary, nanoadditives provide improved lubrication and wear protection by forming protective surface layers at the interface of moving parts.
For more than 75 years we've fostered an unexpected, innovative way of looking at and solving challenges. From the soles of the boots that first walked on the moon to tires that more tightly hug the roads here on earth, we invent solutions that work- solutions that deliver real results.
(www.witcollubricants.com) Witmans Industries Pvt. Ltd. is an ISO 9001:2008 certified business entity engaged in manufacturing, supplying, trading and exporting a comprehensive assortment of Industrial Oil, Greases, Paints and Waxes. Our range is developed in strict accordance with the global quality standards by utilizing premium quality raw material, modern machinery & genuine techniques. Owing to the qualitative fabrications, our range is widely appreciated for high thermal stability, rust, corrosion, wear, foam & moisture resistance and durability.
Special Features
Super sound insulation
PUR extra clean
Increased underfoot comfort
No wax no polish
3 printed all over design in a wide range of shades
Pure PVC transparent wear layer
VOC compliant
This course will help you in building the real-time web application in ExpressJS.
Express.JS acts as a framework for the web applications built on node.for more details http://lyncschool.com/python-training
Suitable for: 1. Technical Personnel and Decision-Makers are encouraged to participate in this training. 2. DECISION MAKERS: Technical Directors, Managers, Purchasers. 3. TECHNICAL PERSONNEL: Lecturers, Technical Sales, Marketing, Failure Analysis, Research & Development, Quality Control and Assurance, Production Engineers or Technicians. The characteristic of surface and near-surface regions of materials can be characterised by various surface analysis techniques. Applications of many engineering materials are determined by the surface and near-surface structures. Therefore, the well being of this region is essential in order to obtain a pre-required condition for those materials to be applied for a specific application. Typically, failure of engineering products may be traced back to surface/near-surface contamination or surface reconstruction. In order to obtain more information related to the failure, in-sight of these regions need to be exposed. This course is outlined to introduce basic principles of surface science, which serve as an essential foundation to explain the operation concepts and applications of several important surface analysis techniques. Know-how of interpreting the analysis data is also explained in this “easy-to-follow” and “easy-to-understand” training course. With these and the support of brief but sufficient fundamental theories, skill of selecting a relevant technique with respect to its practical engineering usage will be covered. Ultimate goal for this course is to increase level of knowledge in making a correct technical decision to solve surface related issues and transform knowledge into applications.
Top 10 things a fresh programmer should know - Dao Ngoc KhanhDevDay.org
This session, targeted at newly graduates and students, shares some tips on how we can prepare a good foundation for a software career.
Topic present by Dao Ngoc Khanh - Developer at Axon Active Vietnam - at DevDay Da Nang 2015
Ember.js is an opinionated web framework, that allows developers to focus less on boilerplate, and focus more on what makes their app unique. We'll go over some of the best practices of using Ember for cross-device development, and then build an app from a single codebase that produces a standalone desktop app, an in-browser web app and an iOS/Android app.
Along the way we'll cover:
* A high level overview of the Ember.js ecosystem, including build tools and "add-ons"
* Recent improvements to Ember's view layer, and the ramifications on mobile performance
* Best practices for tooling & build pipelines, to maintain your cross-device compatibility
For more than 75 years we've fostered an unexpected, innovative way of looking at and solving challenges. From the soles of the boots that first walked on the moon to tires that more tightly hug the roads here on earth, we invent solutions that work- solutions that deliver real results.
(www.witcollubricants.com) Witmans Industries Pvt. Ltd. is an ISO 9001:2008 certified business entity engaged in manufacturing, supplying, trading and exporting a comprehensive assortment of Industrial Oil, Greases, Paints and Waxes. Our range is developed in strict accordance with the global quality standards by utilizing premium quality raw material, modern machinery & genuine techniques. Owing to the qualitative fabrications, our range is widely appreciated for high thermal stability, rust, corrosion, wear, foam & moisture resistance and durability.
Special Features
Super sound insulation
PUR extra clean
Increased underfoot comfort
No wax no polish
3 printed all over design in a wide range of shades
Pure PVC transparent wear layer
VOC compliant
This course will help you in building the real-time web application in ExpressJS.
Express.JS acts as a framework for the web applications built on node.for more details http://lyncschool.com/python-training
Suitable for: 1. Technical Personnel and Decision-Makers are encouraged to participate in this training. 2. DECISION MAKERS: Technical Directors, Managers, Purchasers. 3. TECHNICAL PERSONNEL: Lecturers, Technical Sales, Marketing, Failure Analysis, Research & Development, Quality Control and Assurance, Production Engineers or Technicians. The characteristic of surface and near-surface regions of materials can be characterised by various surface analysis techniques. Applications of many engineering materials are determined by the surface and near-surface structures. Therefore, the well being of this region is essential in order to obtain a pre-required condition for those materials to be applied for a specific application. Typically, failure of engineering products may be traced back to surface/near-surface contamination or surface reconstruction. In order to obtain more information related to the failure, in-sight of these regions need to be exposed. This course is outlined to introduce basic principles of surface science, which serve as an essential foundation to explain the operation concepts and applications of several important surface analysis techniques. Know-how of interpreting the analysis data is also explained in this “easy-to-follow” and “easy-to-understand” training course. With these and the support of brief but sufficient fundamental theories, skill of selecting a relevant technique with respect to its practical engineering usage will be covered. Ultimate goal for this course is to increase level of knowledge in making a correct technical decision to solve surface related issues and transform knowledge into applications.
Top 10 things a fresh programmer should know - Dao Ngoc KhanhDevDay.org
This session, targeted at newly graduates and students, shares some tips on how we can prepare a good foundation for a software career.
Topic present by Dao Ngoc Khanh - Developer at Axon Active Vietnam - at DevDay Da Nang 2015
Ember.js is an opinionated web framework, that allows developers to focus less on boilerplate, and focus more on what makes their app unique. We'll go over some of the best practices of using Ember for cross-device development, and then build an app from a single codebase that produces a standalone desktop app, an in-browser web app and an iOS/Android app.
Along the way we'll cover:
* A high level overview of the Ember.js ecosystem, including build tools and "add-ons"
* Recent improvements to Ember's view layer, and the ramifications on mobile performance
* Best practices for tooling & build pipelines, to maintain your cross-device compatibility
OUTDATED PRESENTATION: To view updated version, please visit ISSUU, SCRIBD, YUMPU, and do the same presentation title search or use search engine. Slideshare does not allow file update at this time. - THANK YOU.
==
(Part 2 of 2)Scientific Investigative Report of Commercialized Examples(continuous updating summary): on conventional low cost energy cleantech, as well as uniquely high efficiency less known technologies with various debatable & difficult to replicate claims. The analysis includes questionable purported ideas that various technological lobby or special interest groups can influence scientific integrity on peer review system or generate public opinion on reality of energy tech effectiveness.
LENR-Cold Fusion technology's effect itself is in virtual acceptance by Mainstream Western Science and the next step is when the various available commercialized "free energy" generators, if such devices work, would become officially endorsed by mainstream outlets.
In this scenario, a string of other related technologies would also be reviewed by mainstream full scientific protocol for the first time for the accelerated improvement of human life across the board, while alleged past tech discrediting by some influential groups, if existed, would likely to be increasingly known to the public whether accepted as valid or not.
data science @NYT ; inaugural Data Science Initiative Lecturechris wiggins
inaugural Data Science Initiative Lecture @ Brown University
2015-12-04
https://www.eventbrite.com/e/data-science-at-the-new-york-times-tickets-19490272931
Slides from our CodeMash 2013 Precompiler session, "Web Development with Python and Django", including a breezy introduction to the Python programming language and the Django web framework. The example code repository is available at https://github.com/finiteloopsoftware/django-precompiler/
Shown for the first time at the VII Moscow International Lubricant Week, Molykote® experts present a new range of lubricants developed through the use of unique patented technology.
New silicone copolymer lubricants combine the thermal stability of phenyl siloxanes with the wear resistance of fluoro siloxanes to deliver increased wear resistance even at high temperatures. The balance of phenyl and fluoro groups can be adjusted to produce the ideal solution for each tribological challenge.
With high-temperature lubricity achieved, without sacrificing low-temperature operation, these new oils and greases function effectively in a wide range of temperatures (-35°C to 220°C) – delivering superior performance against ester based lubricants. With a lower density than PFPE lubricants, they offer lower cost-per-use and their wide additive acceptance delivers additional properties such as corrosion and oxidation resistance.
See the results of the research and development along with a direct comparison against a range of silicone, PFPE and ester based lubricants.
A wide range of applications are emerging as we work with industry to launch further ranges within this group. Contact your Molykote representative now to request a development sample.
Norton introduces a new abrasive range for centerless coil and glass polishing. W448 is made from aggregate technology where cork and silicon carbide grains are precisely structured and engineered to size, to create a consistent surface finish with improved belt life.
Texaco Meropa si presenta come un olio per ingranaggi che assicura una elevata stabilità terminca ed un'ottima resistenza all'ossidazione. I Texaco Meropa distribuiti su Fornid assicurano una lubrificazione ottimale di tutti gli ingranaggi industriali
Momentive has launched two new products, ECC3011 and ECC3051S conformal coatings that can withstand harsh operating conditions, helping to prevent the occurrence of corrosion on vital PCB components and surfaces.
Exporting and supplying a range of automotive care products like engine carbon cleaner, lubricant spray, lubricating oil additives. These are used for various maintenance services in automotive industry such as Heavy Duty Release Lubricant, 20 ST Paste, Anti Seize Paste, Chuck Paste, Engine Clear Coat, Engine Oil Additives, Automotive Rubbing Compound..
Using additives to drive coefficient of friction and wear reduction in plasticsmolykotetl
Plastics are increasingly replacing metals in many applications, offering a cheaper yet reliable alternative. Yet material replacement can lead to new lubrication challenges. Presented for the first time at the Polytrib conference in Slovenia, we share exciting new experimental evidence on the effectiveness of additives in both external and internal application.
See experimental results and comparative evidence of Dow Corning® silicone additives, such as Dow Corning® HMB-1103, Dow Corning® 50-011 and Dow Corning® 31-441 pellets and powders. Tested in a range of polyamide (PA) and polyoxymethylene (POM) applications results are compared against commonly used compounds, such as PFTE.
Interested in further information?
Join the discussion below and don’t forget to share the presentation through LinkedIn or Twitter by clicking the buttons below.
1. Tec Star S.r.l.
Viale Europa, 40 – 41011 Campogalliano (MO), Italy
Tel. +39059 526845 – Fax +39059 527000
Nanocomposite Materials: lubricants
Dr. Alberto Borghi
Tec Star Srl - President | CEO
2. Tec Star S.r.l.
Viale Europa, 40 – 41011 Campogalliano (MO), Italy
Tel. +39059 526845 – Fax +39059 527000
Summary
Nanoadditives for tribological
performance in lubricants
How they work
Dispersion and stability
liquid and grease nanocomposite lubricants:
tribological properties: tribological properties
Example of applications
3. Tec Star S.r.l.
Viale Europa, 40 – 41011 Campogalliano (MO), Italy
Tel. +39059 526845 – Fax +39059 527000
BOUNDARY LUBRICATION regime is critical for wear and friction. To work in this condition, people add to
lubricants chemical EP additives. Tipical additives are based on Chlorine, Sulfur, Phosphorus, Zinc, etc.
Main problems using these kind of chemical additives are due to chemical incompatibility, temperature
effect, pollution.
Nanoadditives for tribological performance in
lubricant: how they work
4. Tec Star S.r.l.
Viale Europa, 40 – 41011 Campogalliano (MO), Italy
Tel. +39059 526845 – Fax +39059 527000
Nanoadditives for tribological performance in
lubricant: how they work
sheared
transfer layers
arranged on
the surface for
boundary
layer
lubrication
Nanoparticles as additives for lubricants are:
oxides and/or sulfides
spherical or onion like structure
functionalized or not
chemically inert
insensitive to temperature
small dimensions: allow them to easly enter
the contact area
low concentration
5. Tec Star S.r.l.
Viale Europa, 40 – 41011 Campogalliano (MO), Italy
Tel. +39059 526845 – Fax +39059 527000
Nanoadditives for tribological performance in
lubricant: dispersion and stability
Uncoated
DCG
S1-coated
DCG
S2-coated
DCG
S3-coated
DCG
Average
Agglomerate
size (µm2)
1.7 1.1 0.6 0.35
Sedimentation
time (days)
3 8 >14 4
Silane functionalization
S1 - Silane n°1 Long pol. chain
S2 - Silane n°2 Mid pol. chain
S3 - Silane n°3 Short pol. chain
DCG = dichalcogenide structure
7. Tec Star S.r.l.
Viale Europa, 40 – 41011 Campogalliano (MO), Italy
Tel. +39059 526845 – Fax +39059 527000
Nanoadditives for tribological performance in
lubricant: tribological properties of mineral oil
Tribological test: Wear Rate (WR) vs different
kinds of nanoparticles:
• Room Temperature
• Vertical Load = 500N
• Rotational Speed = 200 rpm
• Time = 30 min.
• Block Material = 39NiCrMo5
• Mineral Oil ISO 320 (M320)
• Nanoparticles Concentration = 0.05 wt.%
• Kind of Nanoparticles = variable
1. Best results = DCG2
2. Others kinds of nanofiller increase the WR
3. Main problem = Nanoparticles dispersion
and stability
4. DCG2 is more stable with respect to the
other ones
8. Tec Star S.r.l.
Viale Europa, 40 – 41011 Campogalliano (MO), Italy
Tel. +39059 526845 – Fax +39059 527000
Nanoadditives for tribological performance in
lubricant: tribological properties of mineral oil
Tribological test: WR vs Concentration of
Nanoparticles (NPs) :
• Room Temperature
• Vertical Load = 500N
• Rotational Speed = 200 rpm
• Time = 30 min.
• Block Material = 39NiCrMo5
• Mineral Oil ISO 320 (M320)
• NPs concentration = variable
• NPs = DCG2
WR doesn’t change with respect to the
concentration of DCG2 NPs.
The decrease of WR in roughly 35%.
9. Tec Star S.r.l.
Viale Europa, 40 – 41011 Campogalliano (MO), Italy
Tel. +39059 526845 – Fax +39059 527000
Tribological test: WR vs NPs concentration:
• Room Temperature
• Vertical Load = 700N
• Rotational Speed = 870 rpm
• Time = 30 min.
• Block Material = CuSn12
• Synthetic Oil PAG ISO320 (P320)
• NPs concentration = variable
• NPs = DCG2
WR decrease vs concentration of NPs.
WR decrease = roughly 80%.
Nanoadditives for tribological performance in
lubricant: tribological properties of synthetic oil
10. Tec Star S.r.l.
Viale Europa, 40 – 41011 Campogalliano (MO), Italy
Tel. +39059 526845 – Fax +39059 527000
Nanoadditives for tribological performance in
lubricant: tribological properties of synthetic oil
Tribological test: WR vs Vertical Load:
• Romm Temperature
• Vertical Load = variable
(low 470N, medium 700N, high 950N)
• Rotational Speed = 870 rpm
• Time = 30 min.
• Block Material = CuSn12
• Synthetic Oil PAG ISO320 (P320)
• NPs concentration = 1 wt.%
• NPs = DCG2
NPs decrease the WR with respect oil without NPs.
11. Tec Star S.r.l.
Viale Europa, 40 – 41011 Campogalliano (MO), Italy
Tel. +39059 526845 – Fax +39059 527000
Nanoadditives for tribological performance in
lubricant: tribological properties of grease
Weld Load (WL) measures were performed with a four-ball apparatus, according to ASTM D 2596.
The Weld Load is in kilograms and it represents the lowest applied load in kilograms force at which the rotating
ball seizes and then welds to the three stationary balls.
The four-ball Wear Rate (WR) test (ASTM D2266) is run for 60 min at 1,200 rpm with a load of 40 kg.
12. Tec Star S.r.l.
Viale Europa, 40 – 41011 Campogalliano (MO), Italy
Tel. +39059 526845 – Fax +39059 527000
Nanoadditives for tribological performance in
lubricant: example of applications
Bearing
Grease Nanoadditive has a positive impact on the bearing lubricity which led to:
1. Bearing friction reduction
2. Reduction in the operating temperature of bearings during the test
3. Significant improvement of the bearing service time (in about 100%),
4. Increasing of bearing dynamic load by about 30%.
Comparison of wear and tear of the inner
bearing rings.
Wear and tear of orbits is about the same
even though the bearing lubricated with
grease with the additive ran about a two
fold number of hours.
13. Tec Star S.r.l.
Viale Europa, 40 – 41011 Campogalliano (MO), Italy
Tel. +39059 526845 – Fax +39059 527000
Nanoadditives for tribological performance in
lubricant: example of applications
Worm gearbox
Yield and
Temperature vs
Synthetic Oil:
normal and
nanocomposite
14. Tec Star S.r.l.
Viale Europa, 40 – 41011 Campogalliano (MO), Italy
Tel. +39059 526845 – Fax +39059 527000
Nanoadditives for tribological performance in
lubricant: example of applications
WORK IN PROGRESS
Drawing Metal
We compare Chlorinated oil and Nanocomposite oil
Result: the speed of work increased by 15-20%
15. Tec Star S.r.l.
Viale Europa, 40 – 41011 Campogalliano (MO), Italy
Tel. +39059 526845 – Fax +39059 527000
Contacts
Dr. Alberto Borghi
borghi@tec-star.it
TEC STAR Srl
Viale Europa, 40
41011 Campogalliano (MO) - Italy
Tel (+39)059.526845
Fax (+39)059.527000