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Polyamide (PA)

Polyamide (PA)
CAS No.: 63428-84-2
Molecular Formula: C23H26N2O4
Molecular Weight: 394.471
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+86 18765828098
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Product Introduction

Polyamide (PA)—commonly known as nylon—is a class of synthetic polymer materials featuring repeating amide groups in their main chains. Capable of being processed into either synthetic fibers or engineering plastics, polyamides are characterized by high strength, wear resistance, and corrosion resistance, and are widely used in sectors such as textiles, automotive manufacturing, and machinery.


CHEMICAL PROPERTIES

IndexPA6 (Polyamide 6)PA66 (Polyamide 66)
Molecular FormulaC6H13NOC36H66N6O6
Density0.9±0.1 g/cm31.09 g/cm3
Boiling Point255.0±0.0 ∘C at 760 mmHg452.1∘C at 760 mmHg
Melting Point220∘C250∼260∘C
Flash Point102.2±18.4 ∘C227.2∘C
SolubilitySoluble in formic acid, phenol, m-cresol, concentrated sulfuric acid, DMF, etc.; Insoluble in ethanol, ether, acetone, ethyl acetate and hydrocarbons.Soluble in acetic acid and phenolic compounds
Tensile Strength60∼75 MPa70∼85 MPa
Flexural Strength80∼100 MPa100∼120 MPa
Unnotched Impact Strength80∼100 kJ/m290∼120 kJ/m2
Saturated Water Absorption7∼9%3∼4%
Thermal Decomposition Temperature>300∘C>350∘C


SAFETY INFORMATION

Tensile Strength (MD / TD)≥180 MPa
Nominal Tensile Strain (MD / TD)≤180%
Heat Shrinkage Rate - Machine Direction (MD)≤3.0%
Heat Shrinkage Rate - Transverse Direction (TD)≤2.0%
Haze≤7.0%
Dynamic Coefficient of Friction (Untreated Surface / Untreated Surface)≤0.6
Wetting Tension (Treated Surface)≥50 mN/m
Oxygen Transmission Rated0≤0.015 mm≤10.0×10−4 cm3/(m2⋅d⋅Pa)
Oxygen Transmission Rated0>0.015 mm≤5.0×10−4 cm3/(m2⋅d⋅Pa)


PRODUCT USAGE

Polyamide (commonly known as nylon, PA) is a thermoplastic polymer featuring amide groups (-CONH-) in its backbone. It combines high strength, wear resistance, self-lubricating properties, chemical resistance, and excellent electrical insulation, though it is characterized by high moisture absorption and dimensional stability that is significantly affected by humidity. Primarily utilized as a synthetic fiber and as one of the five major engineering plastics, it is widely used to replace metal in the automotive, electronics, machinery, and textile sectors.

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FAQ

Q: Are you a factory or a trading company?

A: We are a company integrating manufacturing and trading.

Q: Can you provide samples for testing before mass production?

A: Of course. We can send you samples free of charge, and we also include a COA. However, you will be responsible for the shipping fee.

Q: How can I get an accurate quote?

A: Please provide the exact product specifications, particle size, color, and intended use, and we will provide you with an accurate quote.

Q: Can you provide a COA?

A: Of course, but only for standard products. If you require an accurate COA, we will produce and test samples before providing you with an accurate COA.

Q: Do you accept ODM or OEM services?

A: Yes, we offer customized services for ingredients, packaging, and labeling. We have strong design capabilities. Please contact us to design your own brand.

Q: Can I visit your factory before placing a large order?

A: Of course. We welcome you at any time.

Q: What is the loading port?

A: Usually Qingdao or Tianjin.

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