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Karinna Lopez

on 28 January 2013

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Transcript of Nylon

Nylon The Chemical Process Physical structure of
nylon Characteristics Properties Performance of
nylon in apparel and interior textiles
+Resistant to natural degradation

+Nylon is resistant to molds, mildew, rot, and many chemicals

+Although susceptible to damage from sunlight, damage does not occur quickly enough to minimize disposal problems with nylon products Environmental concerns
& sustainability of nylon Karinna Lopez & Anali Morales What is Nylon?

Two sets of molecules are combined
One set has an acid group on each end, the other has an amine group on each end

The result of this combination is a substance that is known as nylon 6, 6 or 6

The name is based on the number of carbon atoms between the two acid groups and the two amine groups

Compound combined into a chain of carbon atoms

Produced using specially designed machine

Molten nylon is forced into a spinneret, creating strands Aesthetics

Abrasion resistance

Thermal retention

Appearance Retention
Dimensional stability
Elastic recovery

Recommended Care Synthetic fiber
Made from basic raw materials

“Nylon” is a generic term for the family of
synthetic polymers known as polyamides.

“Any manufactured fiber in which the fiber forming substance is any long-chain synthetic
polyamide in which less than 85% of the
amide linkages are attached directly to two
aromatic rings." A Closer Look
High Examples Why Nylon? WWII & DuPont
Replacement for silk, hemp

First synthetic fiber and first fiber developed in US

1939: DuPont produces nylon 6,6; introduced to public in women's hosiery
Nylon moves through the spinneret and is exposed to the air

Air causes strands to harden immediately

The fibers are stretched to create strength and elasticity

Drawing: the filaments are unwound and then rewound onto another, smaller spool

Used to align the molecules into a parallel structure.

Products are created by weaving the filaments together Nylon 6,6 Nylon 6 Made of hexamethylene diamine and adipic acid

Heat setting 205 C (401 F)

Softening point 250 C (482 F)

Pleats and creases can be heat-set at higher temps

Difficult to dye Made of caprolactam

Heat setting 150 C (302 F)

Softening point 220 C (428F)

Better dye affinity; takes deeper shades

Softer hand

Greater elasticity, recovery; fatigue resistance

Better weathering properties, e.g. sunlight resistance Production The Manufacturing Process Manufacturing Chemical Exceptionally strong


Abrasion resistant


Resistant to damage from oil, chemicals Easy to wash

Can be precolored, dyed in wide range of colors


Low in moisture absorbency Variable Poor
Moderate High
Excellent Machine- wash (apparel)
Dry extraction method (interior textiles) - Nylon is processed from petrochemicals

- The production of nylon consumes more energy than it does the production of polyester or cotton How is Nylon Used? Carpets Single most important use
Aesthetic appearance, durability, appearance retention, ability to be cleaned in place Apparel Lingerie

Nightgowns, pajamas, etc

sheer hosiery

Active sports wear, swimwear Performance nylon fibers Workwear, hunting apparel, etc. Technical Uses Cars
Upholstery fabric, carpets, trunk linking, door and visor trims, seat belts

Sporting goods
Parachutes, cords and harnesses, fishing nets, golf bags, tents, sleeping bags

Consumer goods
Umbrellas, tooth & hair brushes, luggage, backpacks, camera bags, instrument strings

Industrial uses
Mechanical parts, military supplies Available in multifilament and monofilament

Can have bright, semi-dull, or dull lusters

Round cross section, uniform throughout

Transparent unless delustered or solution dyed

Molecular chains are long and straight
with no side chains or cross linkages Aesthetics Smooth, lightweight, high strength
Luster can be selected for end use
Drape can very Durability Outstanding durability
Excellent abrasion resistance Comfort Low absorbency
Development of static electricity
Not as comfortable as natural fibers Appearance Retention Highly resistant when heat-set
Has excellent compressional resiliency
shrinkage resistance
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