What are the types and performance characteristics of nylon?
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- Unsolveddestoon
- 2021-08-07 13:04
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- 1Flooranonymity
- 2021-08-15 13:29
According to the different monomers used in the preparation of nylon, aliphatic nylon is divided into three categories:
1. Nylon made of amino acid or lactam. It is represented by a number, such as PA6, PA12, etc. The number represents the number of carbon atoms in the carbon chain of the monomer.
2. Nylon made of diamine and dibasic acid, represented by two numbers, such as PA66, PA610 and PA1010.
3. Copolymerized nylon is represented by the corresponding combination number of the above two types of nylon. After the combination number, the mass ratio of each component in the polycondensation reaction is indicated in parentheses, such as PA66/6 (60:40), which means that it is composed of 60 parts of PA66. A copolymer made from salt and 40 parts of caprolactam.
The main characteristics of nylon are excellent mechanical properties, such as high tensile strength, good toughness, resistance to repeated shocks and vibrations, and a temperature range of 40~100℃; good wear resistance, low friction coefficient, excellent self-lubricating; electrical insulation Good performance, arc resistance; easy to color and non-toxic; resistance to oil, hydrocarbons, esters and other organic solvents, easy to process and shape. The shortcomings are high water absorption, poor dimensional stability, and intolerance to polar solvents such as water and alcohols. These shortcomings can be overcome by modification methods such as reinforcement and filling, and other properties can be greatly improved.
Nylon can be processed by a variety of molding methods, such as injection, extrusion, casting, and molding. As an engineering plastic, nylon is mainly used to make wear-resistant and stressed transmission parts, and has been widely used in machinery, transportation, instrumentation, electrical, electronics, communications, chemical and medical equipment and daily necessities.
1. Nylon made of amino acid or lactam. It is represented by a number, such as PA6, PA12, etc. The number represents the number of carbon atoms in the carbon chain of the monomer.
2. Nylon made of diamine and dibasic acid, represented by two numbers, such as PA66, PA610 and PA1010.
3. Copolymerized nylon is represented by the corresponding combination number of the above two types of nylon. After the combination number, the mass ratio of each component in the polycondensation reaction is indicated in parentheses, such as PA66/6 (60:40), which means that it is composed of 60 parts of PA66. A copolymer made from salt and 40 parts of caprolactam.
The main characteristics of nylon are excellent mechanical properties, such as high tensile strength, good toughness, resistance to repeated shocks and vibrations, and a temperature range of 40~100℃; good wear resistance, low friction coefficient, excellent self-lubricating; electrical insulation Good performance, arc resistance; easy to color and non-toxic; resistance to oil, hydrocarbons, esters and other organic solvents, easy to process and shape. The shortcomings are high water absorption, poor dimensional stability, and intolerance to polar solvents such as water and alcohols. These shortcomings can be overcome by modification methods such as reinforcement and filling, and other properties can be greatly improved.
Nylon can be processed by a variety of molding methods, such as injection, extrusion, casting, and molding. As an engineering plastic, nylon is mainly used to make wear-resistant and stressed transmission parts, and has been widely used in machinery, transportation, instrumentation, electrical, electronics, communications, chemical and medical equipment and daily necessities.