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phenolic

 
Dictionary: phe·no·lic   (fĭ-nō'lĭk, -nŏl'ĭk) pronunciation
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adj.
Of, relating to, containing, or derived from phenol.

n.
Any of various synthetic thermosetting resins, obtained by the reaction of phenols with simple aldehydes and used to make molded products and as coatings and adhesives. Also called phenolic resin.


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Sci-Tech Encyclopedia: Phenolic resin
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One of the condensation products of phenols or phenolic derivatives with aldehydes such as formaldehyde and furfural. The phenol-formaldehyde resins, developed commercially between 1905 and 1910, were the first truly synthetic polymers and have found wide usage. They are characterized by low cost, dimensional stability, high strength, and resistance to aging.

Phenolic resins can be cast from syrupy intermediates or molded from B-stage solid resins. Laminated products can be produced by impregnating fiber, cloth, wood, and other materials with the resin. An important type of phenolic resin product is rigid foam. Cured phenolic plastics are rigid, hard, and resistant to chemicals (except strong alkali) and to heat.

Some of the uses for phenolic resins are for making precisely molded articles, such as telephone parts, for manufacturing strong and durable laminated boards, or for impregnating fabrics, wood, or paper. Phenolic resins are also widely used as adhesives, as the binder for grinding wheels, as thermal insulation panels, as ion-exchange resins, and in paints and varnishes. See also Adhesive; Ion exchange; Phenol; Plastics processing; Polymerization.

Wikipedia: Phenolic resin
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Phenolic resin can include any of various synthetic thermosetting resins such as Bakelite, obtained by the reaction of phenols with simple aldehydes such as formaldehyde. Phenolics can be used to make molded products including pool balls, laboratory countertops,[1] and as coatings and adhesives.

Phenolic material properties are useful in myriad industrial applications. Phenolic laminates are made by impregnating one or more layers of a base material such as paper, fiberglass or cotton with phenolic resin and laminating the resin-saturated base material under heat and pressure. The resin fully polymerizes (cures) during this process. The base material choice depends on the intended application of the finished product. Paper phenolics are used in manufacturing electrical components such as punch-through boards and household laminates. Glass phenolics are particularly well suited for use in the high speed bearing market. Phenolic micro-balloons are used for density control.

Trade names

  • Bakelite is made from phenolic resin and wood flour.
  • Richlite is made from phenolic resin and paper.
  • Novotext is essentially cotton-reinforced Bakelite
  • Tufnol is made from phenolic resin and cotton or linen fabric.[2]
  • Syndyne phenolic laminates are made from phenolic resin and kraft/cotton paper or cotton fabric.[3]

See also

References

  1. ^ http://www.locscientific.com/Phenolic_Resin_Specs.pdf
  2. ^ "TUFNOL Fabric laminates". Tufnol. http://www.tufnol.com/tufnol/default.asp?id=21. 
  3. ^ "SYNDYNE Phenolic laminates". Syndyne. http://www.syndyne.com.tw/. 


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Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.  Read more
Sci-Tech Encyclopedia. McGraw-Hill Encyclopedia of Science and Technology. Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Phenolic resin".  Read more