In English, Doc! How Do Adhesives Work?
Some of us just dont really care how adhesives work. They work, and thats all we need to know. Some of us are what youd call armchair scientists, and we read technical manuals full of terminology that reads like a foreign language to the average Joe.
Most of us probably fall somewhere in between. We like to know how stuff works, but we dont want to attend a university of science.
So, for the curious layman, heres a general description of how industrial adhesives work:
Obviously, an adhesive is a compound that will adhere, bond, or attach two or more items together (or it had better, if they dont want us switching brands), everybody knows that. Its the science behind it that not everyone is familiar with. Adhesives work in one of four ways. The most common are mechanical and chemical bonding
The simpler and more common form of adhesion. In mechanical bonding, the bond formed between the adhesive and the surface occurs when the adhesive works its way into the small pores of the surface. It acts as if millions of microscopic screws and bolts were driven into both surfaces to hold them together.
Chemical bonding is when an adhesive actually bonds with the surface on a molecular level. This would be the same thing as what happens when two atoms of Hydrogen bond with one atom of Oxygen, hence, H2O, or water. Certain chemicals are simply attracted to each other. Hydrogen especially has a tendency to bond with whatever other atoms it happens to find lying around.
The Seldom Used Alternatives
The third and fourth seldom used methods include the use of van der Waals forces, and moisture aided diffusion of the adhesive into the surface of well okay the third and fourth are kind of difficult to explain in laymans terms, and theyre not very common anyways, so lets just talk about the first two for now.
A Little More on Mechanical Bonding
Mechanical adhesion doesnt strictly happen on a microscopic scale. Velcro, zippers, pins, staples, safety pins, and buttons are all forms of mechanical adhesion. Mechanical refers to the fact that it is simply some physical shape holdin
g the two surfaces together, like a pair of hands clasping tightly.
In glues and adhesives, the mechanical adhesion through the pores of the surfaces occurs thanks to the drying or curing process. When the glue goes on, its in a thin, liquid adhesive form, which still allows either surface to move freely. This liquid form also allows the adhesive to soak into the pores of the surface. When it begins to dry and become solid, it works, just as Velcro, as just a bunch of hooks holding the two objects together.
One More Thing About Chemical Adhesion
Chemical adhesion is more complex and only happens on a microscopic scale. It works by forming a compound between the chemicals of the two surfaces. The reason this form isnt quite as popular for epoxy adhesive manufacturers should be obvious. Chemical adhesion happens all the time in nature, but its kind of a difficult thing to engineer at ones leisure. Only certain chemicals can be easily bonded to one another, and manmade adhesives to aid in chemical bonding is still a relatively undiscovered frontier.
By: Rebecca Wilmot
Article Directory: http://www.articledashboard.com
Permabond is a leading manufacturer of engineering adhesives, supplying high-quality industrial adhesives to customers worldwide. Permabond has offices in The Americas, Europe and Asia and a worldwide network of distributors to assist you with your specific bonding and sealing requirements. To learn more, please visit Adhesives.
Effective Venture Capital Business Plans
Dealing with Disappointments
CII seeks rationalisation of taxes for manufacturing sector
Harrow Escorts Can Make Even a Gloomy Day Exciting and Bright
What Bare copper wire really is?
Residential Generators, 2nd Edition – U.S. Market and World Data
Government Contracts: The New Revenue Stream For Medical Practices
HVAC in the U.S., 2nd Edition Green and Global Market Research Reports
How to Locate and Tom Traffic Redeem Online Coupon Codes?
A Help Desk Can Make Your Customers Happy and Loyal