Supply High Quality Polyamide 6 / Nylon 6 CAS:63428-83-1

polyamide (PA), usually called Nylon, is a hetero-chain polymer containing amide group (-NHCO-) in the main chain. It can be divided into two categories: aliphatic and aromatic. It is the earliest developed and most used thermoplastic engineering material.

Polyamide-6 is aliphatic polyamide, with light weight, strong strength, wear resistance, weak acid and alkali resistance and some organic solvents, easy molding and processing and other excellent properties, widely used in fiber, engineering plastics and film and other fields, but PA6 molecular chain segment contains strong polarity amide groups, easy to form hydrogen bonds with water molecules, The product has the disadvantages of large water absorption, poor dimensional stability, low impact strength in dry state and low temperature, poor acid and alkali resistance.

Nylon for toughness angular translucent or milky crystalline resin, as engineering plastics nylon molecular weight is generally 1.5- 30,000 nylon has high mechanical strength, high softening point, heat resistance, low friction coefficient, wear resistance, self-lubricating, shock absorption and silence, oil resistance, weak acid resistance, alkali resistance and general solvent, good electrical insulation, self-quenching, non-toxic, odorless, Good weather resistance, poor staining. The disadvantage is that the water absorption is large, which affects the dimensional stability and electrical properties. Fiber reinforcement can reduce the water absorption of the resin, so that it can work at high temperature and high humidity.

Polyamide is mainly used for synthetic fiber. Its most prominent advantage is that the wear resistance is higher than all other fibers, 10 times higher than cotton, 20 times higher than wool. Adding a little polyamide fiber to the blended fabric can greatly improve its wear resistance. When stretched to 3-6%, the elastic recovery rate can reach 100%; Can withstand tens of thousands of bending without breaking. The strength of polyamide fiber is 1-2 times higher than that of cotton, 4-5 times higher than that of wool, and 3 times that of viscose fiber. However, polyamide fiber has poor heat and light resistance and poor retention, making clothes not as crisp as polyester. In addition, polyamide 66 and polyamide 6 used for clothing have the shortcomings of poor moisture absorption and dyeing. For this reason, new polyamide fibers of polyamide 3 and polyamide 4 have been developed, which have the characteristics of light weight, excellent wrinkle resistance, good air permeability and good durability, dyeing and heat setting, so it is considered to be very promising.

physicochemical property

monomer
The monomer of nylon 6 is caprolactam, which is a polymer compound synthesized from caprolactam.