![Nylon is formed by the condensation reaction of
two components:
Diamine (a compound containing two amino
[NH2] groups—e.g., hexamethylenediamine)
Dicarboxylic acid (containing two carboxyl
[CO−OH] groups—e.g., adipic acid),
Or may be formed by the self-condensation of an
amino acid or an amino-acid derivative.](https://image.slidesharecdn.com/20-11-141218115404-conversion-gate02/85/polyamides-11-320.jpg)
polyamides
- 6. Polyamide Artificial PA Aliphatic PA Nylon Aromatic PA Kevlar / Nomax Natural PA Silk / Wool
- 8. Nylon => Developed in the 1930’s at DuPont by Wallace Carothers and his team of researchers, Kevlar => In the early 1960s, DuPont was interested in developing “super fibers” due to the prior valuable invention of nylon, In 1965, research scientist Stephanie Kwolek from DuPont discovered “kevlar” Nomex=> material developed in the early 1960s by DuPont and first marketed in 1967,
- 9. What are polyamides? A polyamide is a polymer family that contains recurring amide groups of: R-CO-NH-R’ as integral parts of the main polymer compound. They are formed either by the polymerization of an amino acid or the condensation of a polyamine with a carboxylic acid in which the structural units are linked by amide group bonding them together.
- 11. Nylon is formed by the condensation reaction of two components: Diamine (a compound containing two amino [NH2] groups—e.g., hexamethylenediamine) Dicarboxylic acid (containing two carboxyl [CO−OH] groups—e.g., adipic acid), Or may be formed by the self-condensation of an amino acid or an amino-acid derivative.
- 13. Nylon 6 Carpolactam Nylon 6,4 1,4 diamino butane Adipic acid Nylon 6,6 Hexamethylene diamine Adipic acid Nylon 6,10 Hexamethylene diamine Sebacic acid Nylon 6,12 Hexamethylene diamine Dodecenadioic acid
- 14. Kevlar is formed by condensation reaction of two components: Para-phenylene diamine Terephthaloyl (PPD-T) chloride,
- 15. An inherently flame-resistant, high-temperature fiber It is sold in both fiber and sheet forms and is used as a fabric wherever resistance from heat and flame is required, Nomex is formed by condensation reaction of two components: Para-phenylene diamine Terephthaloyl (PPD-T) chloride,
- 29. Solid nylon can be manufactured by: Extrusion Injection molding Casting
- 33. » Extrusion » Spinning Wet spinning Dry spinning Melt spinning Gel spinning
- 41. Polyamides are prepared by poly- condensation between dicarboxylic acids and diamines. They have the general structure as follows: where R is —CH2— or Polyamides
- 42. The aliphatic polyamides are generally known as NYLONS. There are different types of nylons Nylon
- 43. . Nylon-6:6 This is one way of making nylon 6,6 in the laboratory In a nylon plant, it's usually made by reacting adipic acid with hexamethylene diamine: (polyhexamethylene adiamide)
- 44. Nylon 6 is only made from one kind of monomer called caprolactam. It's made by a ring opening polymerization and self condensation polymerization. Slef Condensationion Polymerization: Nylon 6
- 46. Nylon- 6,10 It is prepared by the condensation reaction between Hexamethylene diamine and Sebacic acid.
- 47. Nylon 6,12 Nylons are the polyamide products from the polycondensation of diamines with dicarboxylic acids. Dodecanedioic Acid (DDDA) is used as the diacid monomer in Nylon 6,12 adhesives, resins and filaments.
- 48. resilience
- 51. It is prepared by the condensation polymerization Kevlar poly-para-phenyleneterephthalamide
- 52. The structure of Kevlar
- 56. Variation of luster: nylon has the ability to be very lustrous, semi lustrous or dull, Durability and high elongation, Excellent abrasion resistance, High resistance to insects, fungi, molds and many chemicals, Melts instead of burning, Good specific strength, Absorbs more water,
- 57. » High strength to weight ratio. » Low ductility. » High modulus of rigidity (structural rigidity). » Low electrical conductivity. » High chemical resistance. » Low Thermal Shrinkage » High toughness (work-to-break). » Excellent dimensional stability. » Low machinability. » Flame retardant, self-extinguishing
- 58. Heat and Flame Resistant High Ultraviolet Resistance High Chemical Resistance Low Thermal Shrinkage Formable for Molded Parts Low Elongation to Break
- 60. TEXTILES
- 61. Nylon insulation on electric wires are used due to its solvent ,wear and abrasion resistance.
- 62. Nylon Bike Made Using Satellite Technology is as Strong as Steel!
- 65. Nylon Pipe Fitting Tube Nylon Pipes Industrial Applications
- 70. Ropes made from polyamides are used by rock and ice climbers.
- 72. Kevlar Kevlar is a very strong material - about five times as strong as steel,
- 73. Kevlar used extensively in the manufacture of panels and wings for fighter jets..
- 74. •Kevlar® 49 and –High-modulus type used primarily in fiber optic cable, ropes, cables, and composites for marine applications. Kevlar® 100
- 78. Nylon sutureS are used in soft tissue of cardiovascular and neurological procedures.