nylon 66 BY.zagros
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This document presents information about nylon 6,6 polymer. It discusses the history of nylon 6,6's development beginning in 1927. It then describes the synthesis of nylon 6,6 which involves a step-growth polymerization of hexamethylene diamine and adipic acid. The document outlines the physical and chemical properties of nylon 6,6 including its elasticity, stiffness, melting point, and resistance to chemicals. Common applications of nylon 6,6 are mentioned such as uses in pipes, machine parts, carpets, and tires due to its strength, rigidity, and stability at high temperatures. Finally, advantages like heat and chemical resistance and disadvantages such as water absorption are highlighted.
![Introduction
ï‚— Nylon-6,6 is a type of polymer.
ï‚— It is commonly known as nylon.
ï‚— The IUPAC name for nylon 6,6 is- Poly[imino(1,6-
dioxohexamethylene) imnohexamethylene.
ï‚— Other name hexane-1, 6 diamine
Poly(hexamethylene adipamide), Poly[imino(1,6-
dioxohexamethylene) iminohexamethylene]
ï‚— The simple molecular formula for nylon 6,6 is -
C12H22N2O2.
ï‚— The CAS number is: 32131-17-2
ï‚— The molecular weight is: 262.345840 g/mol.](https://image.slidesharecdn.com/874bf414-3984-48be-aa69-70c49328ce8b-160223140014/85/nylon-66-BY-zagros-4-320.jpg)
nylon 66 BY.zagros
- 1. University of Soran college of science Presenting by ZAGROS A. OMAR SUPERVISER: Mr. ZRAR 2015-2016
- 2. Outline History Iintroduction Synthesis Mechanism Chemical & physical property Application of nylon Advantages Disadvantages SUMMARY & REFRENCE zagrozaqeanay @gmail.com 2
- 3. HISTORY The development of nylon6,6 was started from 1927 by means of many researchers, notably among them W.H.Carothers. and P.Schlack
- 4. Introduction ï‚— Nylon-6,6 is a type of polymer. ï‚— It is commonly known as nylon. ï‚— The IUPAC name for nylon 6,6 is- Poly[imino(1,6- dioxohexamethylene) imnohexamethylene. ï‚— Other name hexane-1, 6 diamine Poly(hexamethylene adipamide), Poly[imino(1,6- dioxohexamethylene) iminohexamethylene] ï‚— The simple molecular formula for nylon 6,6 is - C12H22N2O2. ï‚— The CAS number is: 32131-17-2 ï‚— The molecular weight is: 262.345840 g/mol.
- 5. synthesis •Materials  Hexamethlenediamine (1,6-hexanediamine)  Adipic acid,  Solvent: tap water and cyclohexane.
- 6. H O O ║ ║ H2N-CH2-CH2-CH2-CH2-CH2-CH2-NH + HOC-CH2-CH2-CH2-CH2-COH H O O │ ║ ║ H2N-CH2-CH2-CH2-CH2-CH2-CH2-N-C-CH2-CH2-CH2-CH2-C-OH + H2O (Nylon 6,6)
- 7. Mechanism of preparation ï‚— nylon is made by a reaction which is a step- growth polymerization, and a condensation polymerization. Nylons are made from diacids and diamines. If you want to see what adipic acid and hexamethylene diamine
- 13. Physical Properties • Elasticity: Breaking extension is 20-40%. • Stiffness: 20-40 gm/den. • Moisture regain: 3.5-5%. • Specific gravity: 1.14. • Abrasion resistance: Excellent. • Dimensional stability: Good. • Resiliency: Excellent. • Softening point: Nylon 6,6 – 229 °C • Melting point: Nylon 6,6 – 252 °C • Hand feel: Soft and smooth.
- 14. Chemical Properties Alkali: Nylon is substantially inert to alkalis. Organic solvent: Most of the solvent have little or no effect on nylon. Light: No discoloration. Biological: Neither micro organism nor moth, larvae attack nylon. Electrical: High insulating properties Flammability: Burns slowly. Extremely chemically stable
- 15. Application of nylon Nylon 6-6 is frequently used when high mechanical strength, great rigidity, and good stability under heat is required . It is used for:  pipes,  various machine parts.  carpet fiberes  airbags, tyres, ropes Etc…. .
- 16. Advantages ï‚— High elongation ï‚— Nylon 6,6 is very stable. ï‚— Heat resistance ï‚— Chemical resistance to hydrocarbons ï‚— High resistance to: insects, fungi and animals, molds, mildew, rot ï‚— Nylon 6,6 has high tensile strength ï‚— Used in carpets and nylon stockings ï‚— Melts instead of burning ï‚— Highly resilient ï‚— Used in many military applications ï‚— Used in the industry
- 17. Disadvantages  - Requires UV stabilization  - High water absorption  -Poor chemical resistance to strong acids and bases  - Attacked by oxidizing agents  - Attacked by strong acids and bases  Etc…
- 19. z.onl y
- 20. ANY QUESTION? Time for discussion. &