What is PA?

PolyamideIt is the general term for polymers containing amide groups in the repeating units of the main chain of macromolecules. Polyamides can be prepared by ringopening polymerization of internal acid amines, and can also be obtained by polycondensation of diamines and dibasic acids. Polyamide (PA) refers to a polymer containing polar amide groups (CONH-) in the main chain. Originally used as a raw material for fiber manufacturing, PA has become a widely used engineering plastic in the industry because of its toughness, wear resistance, self-lubricating, and wide operating temperature range.

   Polyamide plastic is developed on the basis of polyphthalamide fiber. It is the first thermoplastic plastic that can withstand the load. It is also the variety with the largest output, the most variety, and the most versatile among the five general engineering plastics. Guangzhou Aote Engineering Plastics Co., Ltd. has excellent PA injection technology and provides plastic parts processing.

    The main varieties of nylon are nylon 6 and nylon 66, occupying an absolute dominant position. Nylon 6 is polycaprolactam, while nylon 66 is polyhexamethylene adipamide. Nylon 66 is 12% harder than nylon 6, followed by nylon 11. Nylon 12, nylon 610, nylon 612, in addition to nylon 1010, nylon 46, nylon 7, nylon 9, nylon 13, new varieties include nylon 6I, nylon 9T and special nylon MXD6 (barrier resin), etc., modified nylon There are many varieties, such as reinforced nylon, monomer cast nylon (MC nylon), reaction injection molding (RIM) nylon, aromatic nylon, transparent nylon, high impact (super tough) nylon, electroplated nylon, conductive nylon, flame-retardant nylon , Nylon and other polymer blends and alloys, etc., meet different special requirements, and are widely used as substitutes for traditional materials such as metal and wood.

The main characteristics of PA

1. Excellent mechanical properties. Nylon has high mechanical strength and good toughness.

2. Good self-lubricating and friction resistance. Nylon has good self-lubricity and low friction coefficient, so it has a long service life as a transmission component.

3. Excellent heat resistance. Highly crystalline nylon such as nylon 46 has a high heat distortion temperature and can be used for a long time at 150¡ãC. After PA66 is reinforced with glass fiber, its heat distortion temperature reaches 250¡æ or more.

4. Excellent electrical insulation properties. Nylon has high volume resistance and high breakdown voltage resistance, making it an excellent electrical and electrical insulation material.

5. Excellent weather resistance.

6. Water absorption. Nylon has high water absorption, saturated water can reach more than 3%. Affect the dimensional stability of the parts to a certain extent.

Industry Application of PA

   With the development of the petrochemical industry and other industries, it has provided abundant and inexpensive raw materials and a broad market for the development of nylon engineering plastics. Nylon is mainly used in automobile industry, electrical and electronic industry, transportation industry, machinery manufacturing industry, wire and cable communication industry, film and daily necessities. Nylon used in the automotive industry accounts for about 1/3 of the total nylon consumption. It mainly utilizes the comprehensive performance of nylon wax with low density and excellent properties to meet the requirements of light-weight and energy-saving automobiles. In particular, it uses its mechanical strength, wear resistance, oil resistance, self-lubrication and other characteristics to manufacture various bearings, gears, pulleys, oil pipes, oil reservoirs, oil-resistant gaskets, protective covers, support frames, wheel covers, guides, etc. Flow plate, fan, air filter housing, radiator water chamber, brake pipe, engine cover, door handle, etc. Guangzhou Aote Engineering Plastics Co., Ltd. has excellent PA injection technology and provides high-quality plastic parts processing.