TBL Peiris

  NITRILE RUBBER Nitrile rubber is a synthetic polymer. It is produced by a combination of two copolymers, acrylonitrile and butadiene molecules. It is also known as Buna-N or NBR(Nitrile Butadiene Rubber). The Acrylonitrile content of the rubber contains between 15%-40% which determines its properties of the rubber. Nitrile rubber is prepared by either a hot or cold polymerization process using water as the medium. Properties of NBR The significant property of NBR is its excellent resistance to oils and aromatic solvents. The amount of oil resistance is determined by the percentage of acrylonitrile content. The higher the acrylonitrile content, the better the oil resistance As Acrylonitrile content increases, increase the mechanical properties and less permeable to gases.  With reduced Acrylonitrile content, NBR is more flexible at lower temperatures. NBR exhibits excellent abrasion resistance, resistance to cut, tearing and compression set characteristics NBR maintains its r...

  STYRENE-BUTADIENE RUBBER-SBR   SBR is a general-purpose synthetic rubber, produced by emulsion polymerization using copolymers Styrene and Butadiene. If the emulsion polymerization is done at a low temperature like 5°C, then the produced polymer is called cold SBR, while if the polymerization takes place at an elevated temperature around 50°C is referred to as hot SBR. Atypical recipe for cold emulsion SBR polymerization at 5°C Ingredient                                                                 Parts by weight                              Function Butadiene                                    ...

RUBBER AS A MATERIAL IN THE AUTOMOTIVE INDUSTRY Rubber is a necessary material as an element for automobiles, because of its inherent characteristics possess it. Robber possesses original characteristics such as big transformation and restoration, which other engineering materials do not have. Most of the rubber produced worldwide is consumed for making automotive rubber products. If you are considered a modern automobile, it contains more than two hundred different parts are wholly or in considerable parts are made with rubbers. Including tires and tubes, the average rubber component weight per car is about 65kg. From the simplest two-wheeler to the aerospace shuttle, the types of automobile rubber components used are between 4500-5000. WHY RUBBER IS USED FOR AUTOMOTIVE COMPONENTS The answer is rubber's salient characteristics which are inherent to it. Mechanical strength of rubbers Abrasion resistance  Chemical and petroleum oil resistance Hot and cold temperature sustainability ...