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Plastic raw materials PA6 PA66 PA46 PA12 and other characteristics of nylon

Source:http://www.cnjuncheng.net/ Posted On:2016-9-30 17:09:28
Plastic raw materials PA6 PA66 PA46 PA12 and other characteristics of nylon, nylon (Nylon, Polyamide, referred to as PA) is composed of polyamide resin composition of 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, the density: 1.14-1.15g / 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 100% relative humidity saturated suction 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, a higher tensile and 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.PA performance of the main shortcomings; 1 easy to absorb water. Water absorption, saturated water can reach more than 3% .2 poor light resistance. .3. Injection molding technology requirements more stringent:4. Will absorb water, alcohol and swelling, intolerance of strong acid and oxidants, acid materials can not be used.Use Nylon is mainly used in the automobile industry, electrical and electronic industry, transportation industry, machinery manufacturing industry, wire and cable communications, film and daily necessities.Manufacturing all kinds of bearings, gears, round gears, cams, bevel gears, oil pipes, , Hood, bracket, wheel cover, baffle, fan, air filter housing, radiator water chamber, brake pipe, hood, door handle. Bearings, gears, pulley pump impeller, blade, high pressure seal Roller, pump impeller, fan blade, worm wheel, propeller, screw, cable, roller, roller, pump, oil pump, Nuts, oil-resistant gaskets, oil-resistant containers, housings, hoses, cable sheathing, shears, pulley covers, shaper sliders, electromagnetically distributed seats, cooler equipment, gaskets, bearing cages, Tractors on a variety of pipeline, piston, rope, transmission belts, textile machinery, industrial equipment, zero fog, and daily necessities and packaging films, and so on.Plastic raw materials PA6 PA66 PA46 PA12 and other characteristics of nylonKey words: PA6 nylon plastic raw material PA6 PA46 PA12Note: The above information from Ruian Jun Cheng Plastic Manufacturing Co., Ltd. finishing release reproduced please specify copyright: http: // www.cnjuncheng.net

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