What types of nylon are there? What is the difference in heat resistance between nylon and nylon?

Answer Nylon is the trade name of polyamide fiber. There are many varieties, but their molecular backbones are all composed of amido groups

Nylon has many characteristics, such as its relative density is lighter than polyester, its hygroscopicity is greater than polyester, its strength and wear resistance exceed polyester, it has good elasticity and is easy to color, but its heat resistance is worse than polyester. When dyeing and finishing nylon, the effect of temperature on fiber properties must be considered.
The heat resistance performance reference of nylon 6 and nylon 66 is shown in Table 1-3.

Table 1-3 Heat resistance of nylon 6 and nylon 66

During the dyeing and finishing of nylon, if the temperature is close to the melting point, severe shrinkage will occur and the fiber will turn yellow. Generally, the heat setting temperature of nylon 6 should not exceed 160°C.

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