Archive for the ‘General’ Category

  • Introduction and principle of UV

    May 3, 13 • 1720 Views • General • • No Comments

    Introduction and principle of UV INTRODUCTION TO UV RADIATION: Electromagnetic radiation is always emmited by the sun of various wavelengths.Many radiations are visible to our eyesight but many are not.the ray beyond the violet light which is invisible to our

  • PROPORTIES AND USES OF BUNA-S

    May 3, 13 • 22572 Views • General • • 4 Comments

    PROPORTIES AND USES OF BUNA -S The material was initially marketed or originated with the brand name Buna S. Its name derives Bu for butadiene and Na for sodium (natrium in several languages including Latin, German and Dutch), and S for styrene  PROPORTIES

  • Buna N – Properties and Uses

    May 3, 13 • 34908 Views • General • • 7 Comments

    Buna N – Properties and Uses Buna-N is a commonly used elastomer. Buna-N is also known as Nitrile rubber, NBR or Perbunan.It is synthetic rubber copolymer of acrylonitrile(ACN) and butadiene. Elastomer is natural or synthetic material which does not

  • Preparation of Glyptal

    May 3, 13 • 27520 Views • General • • 2 Comments

    Polymer is a chemical compound or mixture of compounds which consist of repeating structural units.These are very large molecules which is made by adding many small molecules called monomers to form large chains.polymers may be natural or synthetic.Example of

  • Preparation of PMMA

    May 3, 13 • 5946 Views • General • • 1 Comment

    PMMA (POLY METHYL METHACRYLATE) PREPARATION OF PMMA -: PMMA is a transparent thermoplastic , used as a light weight or shatter-resistant alternative to glass. PREPARATION OF PMMA-: Preparation of PMMA with high yield by room temperature suspension