Do you really know everyone at the nylon class reunion?

Nylon classAbout

the nylon class, do you know all these class members? Do you know how they got their student numbers? Do you know what they are good at? Next, let's learn about it with the editor ~

the naming of the nylon class number

1. Nylon polymerized by lactam ring-opening, called nylon x, abbreviated as PAx. For example, PA6 is obtained by ring-opening polymerization of caprolactam.

2. The polymer obtained by polycondensation of diacids and diamines is called nylon xy, where x represents the number of carbon atoms contained in the main chain part of the diamine, and y represents the number of carbon atoms contained in the main chain part of the diacid, such as PA610 is obtained by polycondensation of sebacic acid and hexanediamine.

3. Referred to as repeated diamine or diacid, such as msorc-phenylenedimethylamine referred to as MXDA, so the polymer between isophthalamine and adipic acid is called nylon MXD6.

Nylon class reunion sign-in book

1. Nylon 46 (PA46)

2. Nylon 4T (PA4T)

3. Nylon 56 (PA56)

4. Nylon 6 (PA6)

5. Nylon 66 (PA66)

6. Clear nylon (semi-aromatic nylon)

7. Nylon 6T (PA6T)

8. Nylon MXD6

9. Nylon 610 (PA610)

10. Nylon 612 (PA612)

11. Nylon 9T (PA9T)

12. Nylon 10T (PA10T)

13. Nylon 1010 (PA1010)

14. Nylon 11 (PA11)

15. Nylon 12 (PA12)

16. Nylon 1212 (PA1212)

17. Nylon 1313 (Aramid 1313)

18. Nylon 1414 (PA1414)

Nylon classmates

The students in the nylon class are active in all walks of life, so let's get to know them one by one.

1. Nylon 46 (PA46)

Polyamide46 or Nylon46; Abbreviated as PA46. Nylon 46, also known as polyamide 46, that is, polyadipyl butyldiamine.

Its outstanding characteristics are high crystallinity, high temperature resistance, high rigidity, and high strength. Mainly used in automobile engine and peripheral parts, such as cylinder head, cylinder base, oil seal cap, transmission. In the electrical industry, it is used in contactors, sockets, coil frames, switches and other fields that require high heat resistance and fatigue strength.

2. Nylon 4T (PA4T)

English name: Polyamide4T or Nylon4T; Abbreviated as PA4T. Nylon 4T, PA4T is the first high-temperature nylon synthesized since entering the 21st century. It has been 2007 years since it was born on September 9, 27, and it is the first high-temperature nylon invented after 10 in the polymer group. The structural formula is as follows:

The melting point of PA4T pure resin is very high, exceeding its decomposition temperature, and if it is not copolymerized modified to reduce its melting point, it cannot be commercialized, and it is difficult to promote. Therefore, PA4T is promoted in the market, generally requires copolymerization modification, and the common means is to copolymerize with PA66 and/or PA6 to reduce the melting point. After modification, the comprehensive mechanical properties are excellent, the fluidity is good, the electrical properties are excellent, the chemical corrosion resistance and the high temperature resistance are outstanding, which can meet the requirements of electronic and electrical, mobile terminals and other fields.

3. Nylon 56 (PA56)

English name: Polyamide56 or Nylon56; Abbreviation: PA56. Nylon 56 is formed by polycondensation of pentanediamine and adipic acid, the extraction of which can come from natural organisms. Its molecular formula is:

Eco-friendly, good performance, can improve the comfort of the end fabric. Its water absorption, glass transition temperature, strength, softness, moisture absorption, resilience are better than some products of nylon 6, nylon 66 and polyester.

4. Nylon 6 (PA6)

English name: Polyamide6 or Nylon6, abbreviated as PA6; Nylon 6, also known as polyamide 6, that is, polycaprolactam, obtained by caprolactam ring polycondensation, molecular structure:

It is a translucent or opaque opaque resin with superior mechanical properties, stiffness, toughness, wear resistance and mechanical shock absorption, good insulation and chemical resistance. Widely used in auto parts, electronic and electrical parts and other fields.

5. Nylon 66 (PA66)

Polyamide66 or Nylon6; PA66 for short; Nylon 66, also known as polyamide 66, is polyadipylhexanediamine. Molecular Structural Formula:

Compared with nylon 6, its mechanical strength, stiffness, heat resistance and wear resistance, creep resistance is better, but the impact strength and mechanical shock absorption performance are reduced. It has a wide range of applications in automobiles, drones, electronic and electrical, etc.

6. Clear nylon (semi-aromatic nylon)

English name: polytrimethyl hexamethylene terephthalamide; transparent polyamide resin； Transparent nylon is an amorphous polyamide, chemical name: polyterephthaloyltrimethylhexanediamine. Its molecular formula is:

The transmittance of visible light is 85%~90%. It inhibits the crystallization of nylon by adding components with copolymerization and stereoscopic obstacles to the nylon component, thereby producing an amorphous and difficult-to-crystallize structure, which maintains the original strength and toughness of nylon and obtains transparent thick-walled products. The mechanical properties, electrical properties, mechanical strength and rigidity of transparent nylon are almost at the same level as PC and polysulfone.

7. Nylon 6T (PA6T)

Polyamide6T or Nylon6T; Abbreviated as PA6T. Nylon 6T, also known as polyamide 6T, is polyterephthalylhexanediamine.

Its outstanding features are high temperature resistance (melting point of 370 °C, glass transition temperature of 180 °C, can be used for a long time at 200 °C), high strength, dimensional stability, good soldering resistance, making PA6T particularly suitable for electronic connectors for adhesive technology (SMT). Mainly used in automotive parts, oil pump covers, air filters, heat-resistant electrical parts such as wire harness wiring panels, fuses, etc.

8. Nylon MXD6

Nylon-MXD6 is the generic name for a wide range of polyamides produced by Mitsubishi Gas Chemical Corporation from M-XYLENEDIAMINE (MXDA). It is a crystalline polyamide produced by polycondensation of isophthalamine MXDA with adipic acid. Unlike nylon 6 and nylon 66, nylon MXD6 is an aliphatic polyamide that contains an aromatic ring in its backbone. The chemical structure is as follows:

Compared with nylon 6 and nylon 66, nylon MXD6 has the following good characteristics:

1. Greater strength and modulus of elasticity;

2. High glass transition temperature;

3. Low water absorption and moisture permeability;

4. Good crystallization speed and easy molding and manufacturing;

5. Good gas barrier performance.

These characteristics have led to many different applications for nylon-MXD6 as a packaging and molding material, as well as the production of monofilament.

Nylon-MXD6 is an excellent gas barrier to oxygen and carbon dioxide quality. Under certain conditions, its gas-resistance ratio is higher than that of copolymer resins, such as ethylene vinyl alcohol (EVOH), vinylidene chloride (PVDC) and acrylnitrile (pan).

The molding specifications of nylon-MXD6 meet the molding standards of other materials. This means that nylon MXD6 can be co-injection molded and co-extruded to produce laminated containers, bottles and packing sheets using polyethylene terephthalate (PET), polypropylene (PP) or polyethylene (PE).

9. Nylon 610 (PA610)

English name: Poly[imino-1,6-hexanediylimino(1,10-dioxo-1,10-decanediyl)]; Polyamide 610; Nylon 610; PA610 for short. Nylon 610, also known as polyamide 610, is polysunadiylhexanediamine. Molecular Structural Formula:

Translucent creamy white. Its strength is between nylon 6 and nylon 66. Small specific gravity, low crystallinity, low water absorption, good dimensional stability, good wear resistance, self-extinguishing. Used in precision plastic accessories, oil pipelines, containers, ropes, conveyor belts, bearings, textile machinery parts, electrical and electronic insulation materials and instrument shells, etc.

10. Nylon 612 (PA612)

English name: Polyhexamethylene dodecanamide; Polyamide 612; Nylon 612; PA612 for short. Nylon 612, also known as polyamide 612, that is, polydodecanoylhexanediamine. The molecular structural formula is:

Nylon 612 is a kind of nylon with good toughness, smaller density than 610, extremely low water absorption, excellent wear resistance, small molding shrinkage, excellent hydrolysis resistance and dimensional stability. The most important use is to make monofilament and cable wrapping for high-end toothbrushes.

11. Nylon 9T (PA9T)

English name: Polyamide9T or Nylon9T; Abbreviated as PA9T. Nylon-9T, also known as polyamide-9T, is polyterephthaloylnonanediamine. Its molecular formula is:

Its outstanding features are: small water absorption, water absorption rate of 0.17%; Good heat resistance (melting point of 308 °C, glass transition temperature of 126 °C), its welding temperature is as high as 290 °C. Mainly used in electronics, electrical appliances, information equipment and automotive parts.

12. Nylon 10T (PA10T)

English name: Polyamide10T or Nylon10T; Abbreviated as PA10T. Nylon 10T, also polyamide 10T, that is, polyterephthaloyldecanediamine. Its molecular formula is:

Its main features are very low moisture absorption, high temperature resistance, excellent toughness, rigidity and dimensional stability, good fluidity and processing performance, easy coloring, high strength of welding fusion line, melting point up to 300~316 °C, density of 1.42g/cm3. PA10T has a benzene ring and a long diamine flexible long chain, which makes the macromolecules have a certain degree of compliance, so as to have a high crystallization rate and crystallinity, which is suitable for rapid prototyping. Widely used in LED reflection bracket, motor end cover, brush bracket, gear, etc.

13. Nylon 1010 (PA1010)

English name: Polyamide1010; Nylon1010； Abbreviated as PA1010. Nylon 1010, also known as polyamide 1010, that is, polysunadiyl sunflowerdiamine. Molecular Structural Formula:

Nylon 1010 is made from castor oil as the basic raw material, which was first successfully developed and industrialized by Shanghai celluloid factory in China. Its biggest feature is that it has high ductility, can be drawn to 3~4 times the original length, and high tensile strength, excellent impact and low temperature, not brittle at -60 °C, and has excellent wear resistance, ultra-high toughness and good oil resistance, widely used in aerospace, cable, optical cable, metal or cable surface coating.

14. Nylon 11 (PA11)

Polyamide11 or Nylon11; Abbreviated as PA11. Nylon 11, also known as polyamide 11, that is, polyundecalactam. The molecular structural formula is:

It is white translucent. Its outstanding features are low melting temperature and wide processing temperature, low water absorption, good low temperature performance, and good flexibility that can be maintained at -40 °C ~ 120 °C. Mainly used in automobile oil pipelines, brake system hoses, optical fiber cable coating, packaging film, daily necessities, etc.

15. Nylon 12 (PA12)

English name: Polyamide12 or Nylon12; Abbreviated as PA12. Nylon 12, also known as polyamide 12, that is, polydodecamide. The molecular structural formula is:

It is similar to nylon 11, but its density, melting point and water absorption are lower than nylon-11. Due to its large amount of flexibilizer, it has the properties of combining polyamide and polyolefin. Its outstanding features are high decomposition temperature, low water absorption, and excellent low temperature resistance. Mainly used in automobile oil pipelines, instrument panels, accelerator pedals, brake hoses, muffling parts of electronic appliances, cable sheaths.

16. Nylon 1212 (PA1212)

English name: Polyamide 1212; Nylon1212； Abbreviated as PA1212. It is obtained by polycondensation of dodecadiamine and dodecanoic acid. Its molecular formula is:

PA1212 has the lowest water absorption rate in nylon, good dimensional stability, oil resistance, alkali resistance, good wear resistance, chemical resistance, good transparency, and excellent toughness at low temperatures. Widely used in aerospace, automobile, textile, instrumentation, medical equipment, etc.

17. Nylon 1313 (Aramid 1313)

English name: Polyamide1313; Nomex； Nylon1313； Abbreviated as PA1313. Sophthaloyl chloride and m-phenylenediamine are obtained by polycondensation of monomers, and their molecular structure formula is:

Nomex has much higher mechanical properties and heat resistance than aliphatic PA (as a fiber fabric, the life is 8 times that of aliphatic PA fiber cloth and 20 times that of cotton cloth), good heat aging resistance (after 250°C after 2000h heat aging, the surface resistivity and volume resistance remain unchanged), and can still maintain good electrical properties in higher temperature or humid environments. It is mainly used for H-class electrical insulation materials and the preparation of high-performance fibers (HT-1 fibers).

18. Nylon 1414 (PA1414)

English name: Polyamide1414; Kevlar； Nylon1414。 Abbreviated as PA1414. Polyphthalamide. Its molecular formula is:

The molecule is mainly composed of a rigid benzene ring, which belongs to a highly rigid polymer, its molecular structure has a high degree of symmetry and regularity, and there are strong hydrogen bonds between the macromolecular chains, so that the polymer has the characteristics of high strength, high modulus, high temperature resistance, low density, small heat shrinkage, good dimensional stability, etc., and can be made into high-strength, high-modulus fibers.