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Plastic raw materials such as nylon PA6 PA66 PA46 PA12 characteristics of nylon

Source:http://www.cnjuncheng.net Posted On:2016-7-22 18:12:50

Plastic raw materials such as nylon PA6 PA66 PA46 PA12 characteristics of nylon


  Nylon (Nylon, Polyamide, referred to as PA) is composed of polyamide resin composition of the plastic.

  This kind of resin can be obtained by polycondensation of dibasic acid and dibasic acid. It can also be obtained by ring-opening polymerization of lactam formed by dehydration of amino acid. Unlike PS, PE and PP, PA does not change with the increase of heating temperature. Softening, but in a narrow temperature near the melting point of softening, melting point is obvious, melting point: 215-225 ℃. Once the temperature reaches the flow.

  PA variety, mainly PA6, PA66, PA610, PA11, PA12, PA1010, PA612, PA46, PA6T, PA9T, MXD-6 aromatic amide and so on. PA6, PA66, PA610, PA11, PA12 are the most commonly used.

  Nylon-like engineering plastics appear on the appearance of horny, toughness, surface brightness, white (or milky white) or yellowish, transparent or translucent crystalline resin, it is easy to be made into any color. As the engineering plastic nylon molecular weight is generally 1.5-3 million.

  Their density is slightly greater than 1,

  Density: 1.14-1.15 g / cm3.

  Tensile strength:> 60.0Mpa.

  Elongation:> 30%.

  Bending strength: 90.0Mpa.

  Notched impact strength: (KJ / m2)> 5.

  Nylon shrinkage of 1% to 2%.

  Attention should be paid to the dimensional change of moisture absorption after molding. Water absorption of 100% relative to saturated moisture absorption 8%.

  The use of temperature can be between -40 ~ 105 ℃.

  Melting point: 215-225 ° C.

  Suitable wall thickness is 2-3.5mm.

  PA mechanical properties such as tensile and compressive strength with temperature and moisture absorption and change, so the water is relatively PA plasticizer, adding glass fiber, the tensile compressive strength can be increased by about 2 times, temperature ability is also Accordingly, the wear resistance of the PA itself is very high, so it can be operated without lubrication. If you want to obtain special lubricating effect, you can add sulfide in the PA.

  PA performance of the main advantages are:

  1. High mechanical strength, good toughness, high tensile, compressive strength. Than the tensile strength than metal, compared with the compression strength and metal, but its rigidity than metal. Tensile strength close to the yield strength, more than twice as high ABS. The shock, stress vibration absorption capacity, the impact strength is much higher than the average plastic, and better than acetal resin.

  2. Outstanding fatigue resistance, the workpiece after repeated inflection can still maintain the original mechanical strength. Common escalator handrails, new bike plastic wheels and other cyclical fatigue is very obvious occasions, often the application of PA.

  3. High softening point, heat resistance (such as nylon 46, high crystalline nylon heat distortion temperature is high, can be long-term use at 150 degrees.PA66 after glass fiber reinforced, the heat distortion temperature of 250 degrees or more).

  4. The surface is smooth, the friction coefficient is small, wear-resisting. When the mechanical components for the activities of self-lubricating, low noise, friction is not too high when the lubricant can be used; if you really need to use lubricants to reduce friction or help heat, water oil, grease and so can choose. As a result, the transmission member has a long service life.

  5. Corrosion-resistant, very alkali and most of the salt solution, but also resistant to weak acids, oil, gasoline, aromatic compounds and general solvents, inert to aromatic compounds, but not strong acid and oxidants. Resistant to gasoline, oil, fat, alcohol, weak 堿 erosion and have a good anti-aging ability. Can be used for lubricating oil, fuel and other packaging materials.

  6. Self-extinguishing, non-toxic, odorless, good weather resistance, inert to biological erosion, a good anti-bacterial, anti-mildew ability.

  7. Has excellent electrical properties. Good electrical insulation, high volume resistance of nylon, high breakdown voltage, in the dry environment, can be used for frequency insulation material, even in high humidity environment still has good electrical insulation.

  8. Parts of light weight, easy to dye, easy to shape. Because of a lower melt viscosity, rapid flow. Easy filling, mold filling point after the high-speed, can quickly shape, so the molding cycle is short, high production efficiency.

  Gears, gears, gears, cams, bevel gears, oil pipelines, oil storage tanks, oil and gas pipelines, oil and gas pipelines, and other industries. The main products of the company are: automotive, electrical and electronic industries, transportation, machinery manufacturing industry, Air hood, radiator water chamber, brake pipe, hood, door handle. Bearings, gears, pulleys Pump impeller, blades, high pressure seals, Cylinders, Cylinders, Cylinders, Cylinders, Cylinders, Cylinders, Cylinders, Cylinders, Cylinders, Roller Bearings, , Oil-resistant gaskets, oil-resistant containers, housings, hoses, cable sheathing, shears, pulley covers, shaper slides, electromagnetically distributed seats, cold fitting, gaskets, bearing cages, cars and tractors All kinds of oil pipelines, piston, rope, transmission belts, textile machinery, industrial equipment, zero fog, and daily necessities and packaging films.


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