Chemical name Acrylonitrile-Butadiene-Styrene Polymer
The English name Acrylonitrile Butadiene StyreneABS resin is one of the five major synthetic resins. It has impact resistance and heat resistance. It has excellent properties, low temperature resistance, chemical resistance and electrical properties. It also has the characteristics of easy processing, stable product size, good surface gloss, etc. It is easy to paint and color, and can also be used for surface metal spraying, electroplating, welding, heat treatment, etc. Secondary processing such as pressing and bonding, it is widely used in industrial fields such as machinery, automobiles, electronic appliances, instrumentation, textiles and construction. It is a thermoplastic engineering plastic with extremely wide uses. ABS resin is currently the polymer with the largest output and the most widely used. It organically unifies the various properties of PS, SAN, and BS, and has excellent mechanical properties with balanced toughness, hardness, and rigidity. ABS is a terpolymer of acrylonitrile, butadiene and styrene. A represents acrylonitrile, B represents butadiene, and S represents styrene. ABS plastic - general performance
The appearance of ABS is opaque and ivory-colored granules, and its products can be colored and have high gloss. The relative density of ABS is about 1.05 and its water absorption rate is low. ABS has good bonding properties with other materials and is easy to surface print, coat and plating. The oxygen index of ABS is 18 to 20. It is a flammable polymer with a yellow flame, black smoke, and a special cinnamon smell.
Mechanical properties
ABS has excellent mechanical properties, its impact strength is excellent, and can be used at extremely low temperatures; ABS has excellent wear resistance and good dimensional stability. It is also oil-resistant and can be used for bearings under medium load and speed. The creep resistance of ABS is greater than that of PSF and PC, but smaller than that of PA and POM. The flexural strength and compressive strength of ABS are among the worst among plastics. The mechanical properties of ABS are greatly affected by temperature.
Thermal properties
The heat distortion temperature of ABS is 93~118℃, and the product can be increased by about 10℃ after annealing treatment. ABS can still show a certain degree of toughness at -40°C and can be used in the temperature range of -40~100°C.
Electrical properties
ABS has good electrical insulation and is almost unaffected by temperature, humidity and frequency, and can be used in most environments.
Environmental performance
ABS is not affected by water, inorganic salts, alkali and various acids, but it is soluble in ketones, aldehydes and chlorinated hydrocarbons and is affected by glacial acetic acid. , vegetable oil and other corrosion will cause stress cracking. ABS has poor weather resistance and is prone to degradation under the influence of ultraviolet light; after being exposed outdoors for half a year, the impact strength drops by half.
Processing properties of ABS plastic
ABS, like PS, is a thermoplastic with excellent processing properties and can be processed by common processing methods.
The melt fluidity of ABS is better than PVC and PC, but worse than PE, PA and PS, and similar to POM and HIPS; the flow characteristics of ABS are non-Newtonian fluids; its melt viscosity and processing temperature Both are related to shear rate, but are more sensitive to shear rate.
ABS has good thermal stability and is not prone to degradation. ABS has a high water absorption rate and should be dried before processing. The drying conditions for general products are a temperature of 80~85°C and a time of 2~4 hours; for products with special requirements (such as electroplating), the drying conditions are a temperature of 70~80°C and a time of 18~18 hours. ABS products are prone to internal stress during processing. The size of the internal stress can be tested by immersing it in glacial acetic acid. If the stress is too great and the product is absolutely prohibited from stress cracking, it should be annealed. The specific conditions are to place it in a hot air circulation at 70~80°C. Leave in the drying box for 2~4 hours and then cool to room temperature. ABS plastic-ABS uses The largest application areas of ABS resin are automobiles, electronic appliances and building materials. Applications in the automotive field include automotive dashboards, body exterior panels, interior trim panels, steering wheels, sound insulation panels, door locks, bumpers, ventilation ducts and many other components. In terms of electrical appliances, it is widely used in electronic appliances such as refrigerators, televisions, washing machines, air conditioners, computers, and copiers. In terms of building materials, ABS pipes, ABS sanitary ware, and ABS decorative panels are widely used in the building materials industry. In addition, ABS is also widely used in packaging, furniture, sports and entertainment products, machinery and instrumentation industries.
Introduction to some brands of acrylonitrile-butadiene-styrene polymer ABS
Product name, model, place of origin, melting index g/10min, characteristics and uses
9715A Jilin Chemical 16 Used in automobiles, home appliances, electronic product shell accessories, toys, daily necessities and other industries and products.
0215A Jihua 20 Used in automobiles, home appliances, electronic product shell accessories, toys, daily necessities and other industries and products.
750 Daqing Petrochemical 4.5 has easy mobility, OA equipment, groceries, etc.
301 Lanhua 1.3-2.3 is suitable for various ordinary casing parts, household appliances, lamps, etc. Miscellaneous goods.
510 Liaoning Huajin 2.5 is used in automobiles, home appliances, electronic product housing accessories, toys, daily necessities and other industries and products.
757K Zhenjiang Chimei 4.2 TV front shell, copier Case, telephone case, cosmetic box
707K Zhenjiang Chimei 1.9 telephone case, lamp holder, toys, office supplies, home appliance buttons.
757 Taiwan Chimei 1.8 TV front casing, copier casing, telephone casing, cosmetic box
747 Original white Taiwan Chimei 0.8 safety helmet, motorcycle fender, shoe heel, Snow sports equipment, etc.
747 Magnetic White Taiwan Chimei 1.2 Ultra-high strength, for injection molding.
777D Taiwan Chimei 6 Ultra-heat resistance.
777B Taiwan Chimei 6.5 has good heat resistance.
758 Taiwan Chimei has good transparency
765B Taiwan Chimei 4.2 has flame retardancy, light resistance and heat resistance.
750 Kumho, South Korea 4.5 Home appliances, auto parts.
GP-22 BASF 13-23 Home appliances, auto parts.
121H South Korea LG 20 vacuum cleaner, mixer
AG15A1 Ningbo Taihua shoe heels, toys, clocks and speaker casings, suitcases, etc.
Remarks: *With Without *, there are two different test methods. * is the result of testing under 21.6kg pressure at 200℃, and without * is the result of testing under 5kg pressure at 200℃