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Classification of Modified Nylon and PA Modified Material

Release time:

2022-08-31 00:00

Modified nylon is divided into: 1, reinforced nylon 2, flame retardant nylon 3, transparent nylon 4, wear-resistant nylon 5, toughened nylon.

Due to the strong polarity of PA, it has strong hygroscopicity and poor dimensional stability, but it can be changed by modification.

1. Flame retardant PA

Due to the addition of flame retardants in PA, most of the flame retardants are easy to decompose at high temperatures, releasing acidic substances, which have a corrosive effect on metals. Therefore, plasticizing elements (screw, rubber head, rubber ring, rubber gasket, flange, etc.) need to be plated with hard chromium. Process, try to control the barrel temperature can not be too high, the injection speed can not be too fast, in order to avoid the rubber material temperature is too high and decomposition caused by discoloration and mechanical properties of the product.

2. Weather resistant PA

Additives such as carbon black to absorb ultraviolet rays are added to PA, which greatly enhance the self-lubricating property of PA and the wear of metal, and will affect the blanking and wear of parts during molding and processing. Therefore, it is necessary to adopt a combination of screw, barrel, rubber head, rubber ring and rubber gasket with strong feeding capacity and high abrasion resistance.

3. Transparent PA

It has good tensile strength, impact strength, rigidity, abrasion resistance, chemical resistance, surface hardness and other properties. It has high light transmittance and is similar to that of optical glass. The processing temperature is 300-315 ℃. During molding and processing, it is necessary to strictly control the barrel temperature. Too high melt temperature will cause the product to change color due to degradation, and too low temperature will affect the transparency of the product due to poor plasticization. The mold temperature is as low as possible, and the high mold temperature will reduce the transparency of the product due to crystallization.

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Nylon Modified Material Market Application

Technical parameters of nylon

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What is the market demand and development of nylon?

The high-strength changes in the nylon market will become larger and larger, and new reinforcement materials such as inorganic whisker reinforcement will become larger and larger. Carbon fiber reinforced PA is mainly used for vehicle engine parts, mechanical parts and aviation equipment parts.

The difference between modified nylon material and pure nylon

There are two common materials on the market: modified nylon materials and pure nylon. What is the difference between these two materials? Compared with pure nylon, modified nylon material has greater impact toughness, stiffness, temperature resistance, creep and fatigue. The modified nylon material has mechanical elongation, molding shrinkage, water absorption and abrasion resistance.

Commonly used modified nylon performance application

Modified nylon is one of the five major engineering plastics, which has the characteristics of many varieties, large output and wide application. However, due to the wide variety of modified nylon, some products have similarities in the application field, and some products are very different and need to be carefully distinguished.

Generation Principle of Modified Nylon

The polymerization reaction of modified nylon is carried out below the polymer dissolution point. The late stage of polymerization is characterized by a rapid increase in content, and at the same time, with the polymer knot and condensation. People usually react directly.

Performance advantages of modified nylon

Nylon is a kind of engineering plastics with excellent mechanical properties, outstanding corrosion resistance, oil resistance, heat resistance, high modulus and so on. Reinforced, flame retardant modification, can significantly improve its heat resistance, modulus dimensional stability and flame retardancy, modified nylon is widely used as a substitute for metal, wood and other traditional materials, used in automotive, electrical and electronic, power tools and other industries.

Nylon Modified Material Market Application

Nylon raw material as the base material, by adding chemical or physical additives, through physical mixing or chemical reaction will change the physical and chemical properties of nylon itself, the formation of plastic granular products. The addition of a compatibilizer to the reinforced nylon G-5 cause the glass fiber to react with the nylon to produce a chemical bond that improves strength and toughness. Toughened nylon can be added with a toughening agent G-1. Abrasion resistant nylon, halogen free flame retardant nylon, conductive nylon, flame retardant nylon and so on. What are the uses of modified nylon?