Acrylonitrile Butadien Research Paper

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NAME: Anurag Srivastava DIGITAL ASSIGNMENT ASSIGNMENT-III Class Nbr: 3720 Course Code: CHY1001 Acrylonitrile butadiene styrene Acrylonitrile butadiene styrene or commonly known as ABS is a type of thermoplastic polymer with chemical formula (C8H8)x(C4H6)y(C3H3N)z. ABS is a terpolymer made by polymerizing styrene and acrylonitrile in the with poly butadiene. The values can differ 15-35% acrylonitrile, 5-30% butadiene and 40-60% styrene. The final product is a long chain of poly butadiene criss-crossed with shorter chains of poly(styrene-co-acrylonitrile). The nitrile groups from neighbouring chains, being polar, attract each other and bind the chains together, making ABS stronger than pure polystyrene. The styrene gives the plastic a shiny,…show more content…
This application exploits the fact that PTFE has excellent dielectric properties. This is especially true at high radio frequencies, making it suitable for use as an insulator in cables and connector assemblies and as a material for printed circuit boards used at microwave frequencies. Combined with its high melting temperature, this makes it the material of choice as a high-performance substitute for the weaker and lower-melting-point polyethylene commonly used in low-cost applications. In industrial applications, owing to its low friction, PTFE is used for applications where sliding action of parts is needed: plain bearings, gears, slide plates, etc. In these applications, it performs significantly better than nylon and acetal; it is comparable to ultra-high-molecular-weight polyethylene (UHMWPE). Although UHMWPE is more resistant to wear than PTFE, for these applications, versions of PTFE with mineral oil or molybdenum disulfide embedded as additional lubricants in its matrix are being manufactured. Its extremely high bulk resistivity makes it an ideal material for fabricating long-life electrets, useful devices that are the electrostatic analogues of…show more content…
It is a thermosetting phenol formaldehyde resin, formed from a condensation reaction of phenol with formaldehyde. It was developed by the Belgian-American chemist Leo Baekeland in New York in 1907. Properties Bakelite has a number of important properties. It can be molded very quickly, allowing identical units to be mass-produced. Moldings are smooth, retain their shape and are resistant to heat, scratches, and destructive solvents. It is also resistant to electricity, and prized for its low conductivity. It is not

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