Composites are materials made from two or more constituent materials that are combined to produce unique properties. Concrete is a common composite made of cement (binder) and gravel (reinforcement), and rebar can be added to make it stronger. Plastics composites are made of synthetic polymers like hydrocarbons and alcohols. Dental composites are synthetic resins used as restorative materials and adhesives in dentistry. Polymer composites use long chains of bonded molecules called polymers, commonly known as plastics or resins. The earliest uses of composites date back to 1500 BC by ancient Egyptians and Mesopotamians who used mud and straw mixtures for building. Later, Mong
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Composites
1. Composites
What’s a composite?
A "composite" is when two or more different
materials are combined together to create a
superior and unique material. A common
example of a composite is concrete. It consists
of a binder (cement) and a reinforcement
(gravel). Adding another reinforcement (rebar)
transforms concrete into a three-phase
composite.
2. Plastics composites
• The plastic substance is a synthetic
macromolecular structure, and which is
constituted by a large number of molecules of
hydrocarbons, alcohols and other organic
composites, ie the plastic is an organic
substance given the amount of carbon among
numerous molecules.
• The plastic may be formed, and is usually
formed by the action of heat and pressure either
natural and artificial heat and pressure.
3. Dental composites
• Dental composite resins are types of
synthetic resins which are used in
dentistry as restorative material or
adhesives.
4. Polymer composites
• The term polymer is commonly used today
in the plastics and composites industry,
and it is often used to imply the meaning
of "plastic" or "resin".
• A polymer is chemical compound where
molecules are bonded together in long
repeating chains.
6. Origen & History
The firts uses of composites date back to the
1500s B.C. when early Egyptians and
Mesopotamians settlers used a mixture of ud
and straw to create strong and durable
building.
7. Origen & History
Later, in 1200 AD, the Mongols invented the
first composite bow. Used a combinations of
wood, bone and “animal glue”, bows were
pressed and wrapped with birch bark.
8. Uses
It is uses since S.XX. in the most varied fields:
aeronáutica, manufactures of prostheses, astro
and cosmonautica, marine engineering, civil
engineering, camping items, etc.
9. Uses in Odontology.
Se utilizan en odontología para obturar dientes.
A diferencia de la amalgama de plata, que
necesita tener unas cavidades especiales
(cavidades de Black) para su obturación, el
composite se adhiere micromecánicamente a la
superficie del diente sin depender de la
cavidad.
10. Uses in Odontology.
Se utilizan en odontología para obturar dientes.
A diferencia de la amalgama de plata, que
necesita tener unas cavidades especiales
(cavidades de Black) para su obturación, el
composite se adhiere micromecánicamente a la
superficie del diente sin depender de la
cavidad.