What is the Difference Between Nylon 6 and Nylon 66?

Nylon 6 and Nylon 66 are the main products of nylon.

Nylon is strong and wear-resistant, and its strength can even be compared with steel wire of the same thickness; Adding 15% nylon into wool can increase its wear resistance by 3.5 times. Besides polypropylene, nylon is the lightest synthetic fiber. Nylon has strong fatigue resistance; Flatness is second only to polyester; The bending and folding resistance is 7-8 times higher than that of cotton fiber; Nylon has excellent chemical stability.

The breaking elongation of nylon varies with varieties; Nylon is a kind of fiber which is easy to dye among synthetic fibers.

Nylon has no advantages in light resistance, hygroscopicity and heat resistance.

Nylon was developed by DuPont Company of the United States, and nylon 66 was synthesized for the first time. Later, nylon 6 was made by German chemists.

Structure of Nylon 6 and Nylon 66

Nylon 66 is poly (hexamethylene adipate) and nylon 6 is polycaprolactam.

Nylon 66 is 12% harder than Nylon 6. Theoretically, the higher the hardness, the more brittle the fiber is and the easier it is to break. But in the use of carpet, this slight difference is indistinguishable.

Cleaning and Antifouling Properties of Nylon 6 and Nylon 66

These two properties are influenced by the cross-section shape of the fiber and the anti-fouling treatment of the back road. However, the strength and hardness of the fiber itself have little influence on cleaning and antifouling.

Melting point and elasticity of Nylon 6 and Nylon 66

The melting point of nylon 6 is 220°C, and that of nylon 66 is 260 C.. However, it is not a difference for the temperature conditions of carpet.

The lower melting point makes nylon 6 have better resilience, fatigue resistance and thermal stability than nylon 66.

Wear Resistance and Dust Resistance of Nylon 6 and Nylon 66

Clemson University in the United States once conducted an experiment with nylon 6 carpet and nylon 66 carpet at Tampa International Airport for two and a half years. The carpet is in a state of extremely high traffic. As a result, nylon 6 is slightly better than nylon 66 in color retention and pile wear resistance. There is no difference in dust resistance between the two yarns.

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What is the Difference Between Nylon 6 and Nylon 66?

Structure of Nylon 6 and Nylon 66

Cleaning and Antifouling Properties of Nylon 6 and Nylon 66

Melting point and elasticity of Nylon 6 and Nylon 66

Wear Resistance and Dust Resistance of Nylon 6 and Nylon 66

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