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General engineering plastics
by：CSSSLD
2021-01-23
Nylon insoluble in most non-polar solvent, aliphatic hydrocarbons, especially gasoline, oil, and animal and plant oil has excellent resistance to alkali class is more stable, but not resistant to strong alkali.
In addition to a few varieties, such as injection molding processing and nylon 11, nylon 12, most varieties of hygroscopicity.
Due to water absorption after many performance have great changes, various properties of vendors often to state of DAM and 50% RH said the performance of two kinds of condition.
engineering plastics 3% of plastic production 6%. Although the total amount is not big, but the product high use value, development speed is much higher than common plastic. Engineering plastics can be divided into two types: general engineering plastics and special engineering plastics. Polyamide, polycarbonate, pom, polyphenylene oxide, and thermoplastic polyester is currently recognized the five common engineering plastics. Compared with common thermoplastics, general engineering plastics with excellent mechanical properties, electrical properties, heat resistance and dimensional stability, such as machinery, automobile, electronic has extensive application in civil industry.
nylon varieties are generally has high mechanical strength and impact toughness, fatigue strength is commonly 20% of tensile strength 30%. Nylon with excellent frictional resistance and abrasion resistance, self-lubrication. Oil free of friction coefficient is usually to 0. 1 - 0. 3, all kinds of abrasion resistance of nylon with nylon 1010 as the best. Most varieties of long-term use of temperature is generally about 80 ℃, the individual varieties of up to 150 ℃, brittle temperature can reach - generally 30℃。
in order to adapt to market demand, more general engineering plastics in the high performance and functional aspects of seeking more space for development, continuously introduce new varieties, and accelerate the upgrading of market products. New species include a variety of fiber reinforced composite material, nanometer material modification of composite materials, special engineering plastics alloy, and general engineering plastics mixing between HunGeJin. Nylon, polyamide, commonly known as PA for short, is a typical crystalline form thermoplastic engineering plastics.
polyamide engineering plastics is the earliest one was found to be able to withstand the load. Polyamide engineering plastics in the production and consumption of the first, accounting for about one-third of the total engineering plastics. Polyamide is on the main chain contains many repeated amide group of thermoplastic polymers. The main varieties are nylon 6, nylon 66, nylon 610, nylon 612, nylon 1010, nylon 11, nylon 12 and their modified products. With nylon 6, nylon 66 landslide.
engineering plastics is the plastic can be used as the engineering material. Specifically, refers to can be used as a structural material, can be widely in injection molding processing temperature range, under mechanical stress and harsh chemical plastics used in the physical environment. Also some scholars think that the tensile strength is greater than 50 mpa, tensile modulus is greater than 2500 mpa, the impact strength greater than 60 j/m, and long-term thermal stability above 100 ℃ in the plastic for engineering plastics.
polyamide can be made with diamine and dibasic acid via polycondensation reaction, can also be made from lactam through the poly. The naming of nylon is generally according to participate in the reaction monomer to determine the number of carbon atoms. Is a great variety of nylon, but on the main chain containing polarity amide groups, so there are many things in common. The number of carbon atoms in a unit for each variety structure is different, the performance also vary, bibulous rate is larger varieties of nylon, its performance and the moisture content and dry state relations.
more excellent articles: ABS resin injection molding processing, click directly.
http://www。 csssld。 cn//html/2017/Info_0210/490。 HTML
nantong on suye's official website: http://www. csssld。 cn//
engineering plastics 3% of plastic production 6%. Although the total amount is not big, but the product high use value, development speed is much higher than common plastic. Engineering plastics can be divided into two types: general engineering plastics and special engineering plastics. Polyamide, polycarbonate, pom, polyphenylene oxide, and thermoplastic polyester is currently recognized the five common engineering plastics. Compared with common thermoplastics, general engineering plastics with excellent mechanical properties, electrical properties, heat resistance and dimensional stability, such as machinery, automobile, electronic has extensive application in civil industry.
nylon varieties are generally has high mechanical strength and impact toughness, fatigue strength is commonly 20% of tensile strength 30%. Nylon with excellent frictional resistance and abrasion resistance, self-lubrication. Oil free of friction coefficient is usually to 0. 1 - 0. 3, all kinds of abrasion resistance of nylon with nylon 1010 as the best. Most varieties of long-term use of temperature is generally about 80 ℃, the individual varieties of up to 150 ℃, brittle temperature can reach - generally 30℃。
in order to adapt to market demand, more general engineering plastics in the high performance and functional aspects of seeking more space for development, continuously introduce new varieties, and accelerate the upgrading of market products. New species include a variety of fiber reinforced composite material, nanometer material modification of composite materials, special engineering plastics alloy, and general engineering plastics mixing between HunGeJin. Nylon, polyamide, commonly known as PA for short, is a typical crystalline form thermoplastic engineering plastics.
polyamide engineering plastics is the earliest one was found to be able to withstand the load. Polyamide engineering plastics in the production and consumption of the first, accounting for about one-third of the total engineering plastics. Polyamide is on the main chain contains many repeated amide group of thermoplastic polymers. The main varieties are nylon 6, nylon 66, nylon 610, nylon 612, nylon 1010, nylon 11, nylon 12 and their modified products. With nylon 6, nylon 66 landslide.
engineering plastics is the plastic can be used as the engineering material. Specifically, refers to can be used as a structural material, can be widely in injection molding processing temperature range, under mechanical stress and harsh chemical plastics used in the physical environment. Also some scholars think that the tensile strength is greater than 50 mpa, tensile modulus is greater than 2500 mpa, the impact strength greater than 60 j/m, and long-term thermal stability above 100 ℃ in the plastic for engineering plastics.
polyamide can be made with diamine and dibasic acid via polycondensation reaction, can also be made from lactam through the poly. The naming of nylon is generally according to participate in the reaction monomer to determine the number of carbon atoms. Is a great variety of nylon, but on the main chain containing polarity amide groups, so there are many things in common. The number of carbon atoms in a unit for each variety structure is different, the performance also vary, bibulous rate is larger varieties of nylon, its performance and the moisture content and dry state relations.
more excellent articles: ABS resin injection molding processing, click directly.
http://www。 csssld。 cn//html/2017/Info_0210/490。 HTML
nantong on suye's official website: http://www. csssld。 cn//
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