1. The document discusses the mechanisms of adhesion, which can be divided into chemical bonding and physical bonding. Chemical bonding involves primary bonds formed by electron sharing or exchange, and secondary bonds formed through mechanical linking. Physical bonding involves mechanical interlocking, diffusion, adsorption, and electrostatic forces.
2. Mechanical interlocking occurs when an adhesive penetrates pores and irregularities in a substrate to create a mechanical link. Diffusion bonding is caused by compatibility between polymer chains that allows for mixing and penetration. Adsorption bonding is through intermolecular attraction like van der Waals forces, requiring wetting of the substrate. Electrostatic bonding arises from separation of charges at interfaces, affecting polar adhesives.
Introduction, types, raw material, reaction mechanism, manufacturing process, flow sheet of production process, properties, applications, industries in India, commercial name
Lecture notes on Structure and Properties of Engineering Polymers
Course Objectives:
The main objective is to introduce polymers as an engineering material and emphasize the basic concepts of their nature, production and properties. Polymers are introduced at three levels; namely, the molecular level, the micro level, and macro-level. Through knowledge of all three levels, student can understand and predict the properties of various polymers and their performance in different products. The course also aims at introducing the students to the principles of polymer processing techniques and considerations of design using engineering polymers.
Additives of Polymer, Additives of plastic, Improve properties of Plastic, Ty...Jaynish Amipara
additives of plastic.
uses of filler in plastic.
types of a heat stabilizer.
types of lubricant.
types of plasticizer in plastic.
plastic in antioxidant.
Introduction, types, raw material, reaction mechanism, manufacturing process, flow sheet of production process, properties, applications, industries in India, commercial name
Lecture notes on Structure and Properties of Engineering Polymers
Course Objectives:
The main objective is to introduce polymers as an engineering material and emphasize the basic concepts of their nature, production and properties. Polymers are introduced at three levels; namely, the molecular level, the micro level, and macro-level. Through knowledge of all three levels, student can understand and predict the properties of various polymers and their performance in different products. The course also aims at introducing the students to the principles of polymer processing techniques and considerations of design using engineering polymers.
Additives of Polymer, Additives of plastic, Improve properties of Plastic, Ty...Jaynish Amipara
additives of plastic.
uses of filler in plastic.
types of a heat stabilizer.
types of lubricant.
types of plasticizer in plastic.
plastic in antioxidant.
Paints and lacquers: Coatings have dual uses of protecting the substrate and being decorative. (The paint on large industrial pipes is presumably only for the function of preventing corrosion).
Rheological test can be very helpful tools for polymer processing and development. This presentation is designed to be an informative introduction and guide to rheological tests, and finding correlations between equipment and processing techniques.
Miscibility and Thermodynamics of Polymer BlendsAbhinand Krishna
Presentation includes classification of polymer blends based on miscibility, phase diagram of polymer blends and thermodynamics polymer blends which includes Gibbs energy theory and Flory-Huggins Theory
Adhesion is one of the essential properties in printing Ink and coatings industry that ensures the coating (or ink film) remains adhered to the surface for long especially under aggressive conditions.
Paints and lacquers: Coatings have dual uses of protecting the substrate and being decorative. (The paint on large industrial pipes is presumably only for the function of preventing corrosion).
Rheological test can be very helpful tools for polymer processing and development. This presentation is designed to be an informative introduction and guide to rheological tests, and finding correlations between equipment and processing techniques.
Miscibility and Thermodynamics of Polymer BlendsAbhinand Krishna
Presentation includes classification of polymer blends based on miscibility, phase diagram of polymer blends and thermodynamics polymer blends which includes Gibbs energy theory and Flory-Huggins Theory
Adhesion is one of the essential properties in printing Ink and coatings industry that ensures the coating (or ink film) remains adhered to the surface for long especially under aggressive conditions.
The increasing importance of studies on soft matter and their impact on new
technologies, including those associated with nanotechnology, has brought intermolecular
and surface forces to the forefront of physics and materials science, for these are the
prevailing forces in micro and nanosystems. With experimental methods such as the atomic
force spectroscopy (AFS), it is now possible to measure these forces accurately, in addition
to providing information on local material properties such as elasticity, hardness and
adhesion. This review provides the theoretical and experimental background of AFS,
adhesion forces, intermolecular interactions and surface forces in air, vacuum and in solution
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Adhesion describes the attractive forces between a biological material and mucus or mucous membrane. 1. Mucous membranes adhere to epithelial surfaces such as the gastrointestinal tract (GI-tract), the vagina, the lung, the eye, etc. They are generally hydrophilic as they contain many hydrogen macromolecules due to the large amount of water (approximately 95%) within its composition. However, mucin also contains glycoproteins that enable the formation of a gel-like substance. 1. Understanding the hydrophilic bonding and adhesion mechanisms of mucus to biological material is of utmost importance in order to produce the most efficient applications. For example, in drug delivery systems, the mucus layer must be penetrated in order to effectively transport micro- or nanosized drug particles into the body. 2 Bioadhesion is the mechanism by which two biological materials are held together by interfacial forces.
A security or wellbeing standard is a standard which obliges cond.docxannetnash8266
A security or wellbeing standard is a standard "which obliges conditions, or the reception or utilization of one or more practices, means, systems, operations, or procedures, sensibly vital or fitting to give sheltered or fortifying occupation". A standard is sensibly important or fitting inside the importance of Section 652(8) on the off chance that it generously lessens or disposes of critical hazard, and is monetarily achievable, mechanically attainable, and practical, and is reliable with earlier Agency activity or is a legitimized takeoff, is upheld by generous confirmation, and is better ready to effectuate the Act's reasons than any national agreement standard it supersedes. A standard is mechanically plausible if the defensive measures it obliges as of now exist, can be brought into presence with accessible innovation, or can be made with innovation that can sensibly be required to be created. A standard is monetarily possible if industry can retain or go on the expenses of consistence without undermining its long haul benefit or focused structure. See ATMI, 452 U.S. at 530 n. 55; AISI, 939 F.2d at 980. A standard is financially savvy if the defensive measures it requires are the minimum expensive of the accessible options that attain to the same level of assurance.
Area 6(b)(7) approves OSHA to incorporate among a standard's prerequisites naming, observing, medicinal testing and other data social occasion and transmittal procurements. All norms must be profoundly defensive. At long last, at whatever point useful, guidelines might "be communicated regarding target criteria and of the execution coveted." As examined in different places in this introduction, OSHA has established that dangers connected with steel erection exercises posture critical dangers to workers and that the procurements of the last administer are sensible and important to shield influenced representatives from those dangers. The Agency evaluates that full consistence with the current and overhauled steel erection standard will diminish the danger of recognized dangers. This constitutes a generous decrease of noteworthy danger of material damage for the uncovered populace of pretty nearly 56,840 steel erection representatives.
OSHA has established that there are no innovative hindrances to agreeability with the last run the show. As examined in Section IV, Summary and Explanation of the Final Rule, the rulemaking record demonstrates that a large portion of the prerequisites contained in the last manage are now as a rule use all through the business. OSHA additionally presumes that agreeability is monetarily doable on the grounds that, as reported in the Final Economic Analysis, all directed parts can promptly assimilate or go on consistence expenses and the standard's expenses, advantages, and agreeability prerequisites are reliable with those of other security norms. The record demonstrates plainly that steel erection workers face noteworthy dangers and that agre.
Standard plank for wood lamination on khaya ivorensisIzzah Noah
khaya ivorensis species
wood lamination
standard for ripping and planing wood
lamination with two different types of surfaces
rough and smooth surface glue surfaces
khaya ivorensis have interlocking grain which easy to split( wood defect)
Six species of wood in light, medium and heavy hardwood category.
Characteristics of the wood such as color, shape of pore, density range etc.
The physical properties of wood that affect adhesive bonding
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
The Art of the Pitch: WordPress Relationships and Sales
Mechanism of adhesion
1. 1
TABLE OF CONTENT
No. Title Pages
1 Abstract (Mechanism Of Adhesion) 2
2 Introduction 2
3 Chemical Bonding
Primary Bond/ Secondary Bond
3
4 Physical Bonding
Mechanical Interlocking
Diffusion Theory
Adsorption
Electrostatic
4
5 Conclusion 6
6 References 6
2. 2
ABSTRACT
MECHANISM OF ADHESION
The analysis of adhesion uses various technique of thought, depending on one’s field of expertise,
and therefore treatment of the phenomena observed can be considerably different. This variety of
approaches is emphasized by the fact that many theoretical models of adhesion have been
proposed, which together are both complementary and contradictory. Adhesion is the action of
adhering to a surface or object. In the other word, it is the main application of adhesion in bonding
by adhesives, this technique replacing at least partially, more classical mechanical attachment
techniques such as bolting or riveting. Adhesion can be divided by two bond component; chemical
bond and physical bond. In chemical bond it is consist primary and secondary bond. For the physical
bond, it is consist four type bonding theory; mechanical interlocking, diffusion theory, adsorption
and electrostatic theory. In fact, the term ‘adhesion’ covers a wide variety concept of bonding ideas,
depending on whether the subject is broached from a molecular, microscopic or macroscopic point
of view about formation of the interface of failure of the formed system.
INTRODUCTION
Adhesion is a process of a substance bind or glued together to the surface of another
substance or substrate. The mechanism of adhesion has been explores for dotage. Many theories
have been introduced for adhesion phenomena. Nonetheless, there is no complete explanation of
what exactly adhesion mean. The briefly explanation of adhesion can be define as it is the bonding of
an adhesive to an object or a surface is the sum of a number of mechanical, physical, and chemical
forces that overlap and influence one another. It is requires two type of bonding; chemical bonding
and physical bonding. It is also can be defined as the tendency of same or different substrate which
is bind together by using adhesion.
On the other hand, according Benjamin E. Russ, adhesion is the binding force between two
different materials, whereas cohesion is the binding force between two similar materials. When two
materials are brought into contact with each other, the surface molecules interact, giving rise to
attractive forces that may be physical, chemical or electrostatic (corresponding to adsorption,
covalent bonding or van der Waals forces, respectively). When the molecules are similar, as in the
case of two 'glue molecules,' the cohesive force causes the glue to stick to itself. When the
molecules are dissimilar, as in the case of a glue molecule and a molecule of the substrate (the
surface the glue is sticking to), the adhesive force holds the glue to the substrate. Hence, the
'stickiness' of tape is caused by a combination of the molecular forces of the glue material sticking to
itself as well as holding onto the substrate.
3. 3
CHEMICAL BONDING
Chemical bonding is a form of adhesive bonding involving a reaction that results in covalent
bonds between the molecules of the adhesive and the surface material. The chemical bonding
mechanism suggests that primary chemical bonds may form across the interface. In chemical bond
consist two category of bond which is primary and secondary bond. Chemical bonds are strong and
make a significant contribution to the intrinsic adhesion in some cases.
PRIMARY/SECONDARY BONDING
Primary bond can be defined as a bond that forms between atoms and that involves the exchanging
or sharing of electrons. Whereas, secondary bond can be explain with it relies on the mechanical
linking of an adhesive to a material.
4. 4
PHYSICAL BONDING
Moreover, physical bond consist four types of theory; mechanical interlocking, diffusion
theory, adsorption and electrostatic. Adsorption theory is a form of adhesive bonding involving the
attraction between the molecules of an adhesive and a surface material. The bonding of an adhesive
to an object or a surface is the sum of a number of mechanical, physical, and chemical forces that
overlap and influence one another. As it is not possible to separate these forces from one another,
we distinguish between mechanical interlocking , caused by the mechanical anchoring of the
adhesive in the pores and the uneven parts of the surface, electrostatic forces, as regard to the
difference in electro negativities of adhering materials, and the other adhesion mechanisms dealing
with intermolecular and Chemical bonding forces that occur at the interfaces of heterogeneous
systems. This chemical adhesion mechanism is explained in the case of the intermolecular forces by
the adsorption theory, and in the case of chemical interactions by the chemisorption theory. The
processes that play a role in the bonding of similar types of thermoplastic high-polymer materials,
e.g. homogeneous systems, can be determined with the diffusion theory.
MECHANICAL INTERLOCKING
The mechanical interlocking theory of adhesion can briefly explain that proper adhesion occurs only
when an adhesive penetrates into the pores, holes and crevices and other distortion of the substrate
and locks mechanically to the substrate. The adhesive must not only wet the substrate, but also have
the right rheological properties to penetrate pores and openings in a reasonable time.
DIFFUSION THEORY
The diffusion model explains the concept of adhesion by the compatibility between polymers and
the movements that occur in the polymer chains. When two polymers are compatible, its polymer
chains are able to mix up between them, resulting in partial penetration between the 2 materials, as
a result of these penetrations anchorage areas and adhesion points take place. The mobility and
degree of penetration of the polymers is determined directly by their molecular weight, so that short
polymer chains have high mobility and penetrate into the other material before the long polymer
chain. Rouse model and reptation model give a detailed explanation of the movements that occur
between the polymer chains which produce the diffusion. Using this theory can explain the
phenomenon of adhesion that occurs between polymeric materials, plastic welding, plastic binding
with adhesives, etc...
5. 5
ADSORPTION THEORY
The adsorption mechanism theory suggests that bonding is the process of intermolecular attraction
(van der Waals bonding or permanent dipole, for example) between the adhesive and the adherend
at the interface. An important factor in the strength of the bond according to this theory is the
wetting of the adherend by the adhesive. Wetting is the process in which a liquid spreads onto a
solid surface and is controlled by the surface energy of the liquid-solid interface versus the liquid-
vapor and the solid-vapor interfaces. In a practical sense, to wet a solid surface, the adhesive should
have a lower surface tension than the adherend. The adsorption theory or model explains the
phenomenon of adhesion based on concepts such as contact angle, wet ability and surface tension.
When the adhesive has a lower surface tension compared to the substrate surface energy, it is
capable of wetting the surface, generating a contact angle less than 90 °, thus generating the
adhesion between the adhesive and substrate. Against the mechanical model and the model of
diffusion, adsorption model explains the phenomenon of adhesion without penetration by the
adhesive to the substrate; the adhesion is generated by the contact between the adhesive and
substrate.
ELECTROSTATIC THEORY
Electrostatic forces may also be a factor in the bonding of an adhesive to an adherent. These forces
arise from the creation of an electrical double layer of separated charges at the interface and are
believed to be a factor in the resistance to separation of the adhesive and the adherend. Adhesives
and adherends that contain polar molecules or permanent dipoles are most likely to form
electrostatic bonding according to this theory.
6. 6
CONCLUSION
The stronger adhesion of bonds between mechanically or chemically roughened surfaces is based on
the enlargement of the effective surface (contact surface between the adhesive and the substrate),
and an increase in the number of active centres, e. g. edges, corners, and faulty parts which, as in
the heterogeneous catalysis, increase the interactive forces in the interface adhesive/surface.
REFERENCES
Scientific American tm online journal; http: //www.specialchem4adhesives.com /resources
/adhesionguide/index.aspx?id=factors
http://www.adhesiveandglue.com/adhesive-definition.html
http://solutions.3m.com/wps/portal/3M/en_US/Adhesives/Tapes/Support/Technical-News-
Articles/?PC_7_U00M8B1A00NI60IDFIPS8T3HR2000000_assetId=1319232951956
http://www.toolingu.com/definition-670120-41242-chemical-bonding.html
http://www.scientificamerican.com/article.cfm?id=what-exactly-is-the-physi