ABS plastic - ABS resin is one of the five synthetic resins, its impact resistance, heat resistance, low temperature resistance, chemical resistance and excellent electrical properties, but also has an easy to process, product size stability, surface gloss and other characteristics, easy to paint, coloring, but also for the surface of the metal spraying, plating, welding, hot pressing and bonding and other secondary processing, widely used in machinery, automobiles, electronics and electrical appliances, Instruments, textiles and construction and other industrial fields, is a thermoplastic engineering plastics with a wide range of uses.
ABS resin is currently the largest production, the most widely used polymers, it will PS, SAN, BS of the various properties of the organic unity, both tough, hard, rigid balance of excellent mechanical properties.ABS is acrylonitrile, butadiene and styrene terpolymer, A on behalf of the acrylonitrile, B on behalf of the butadiene, S on behalf of the styrene.
ABS Plastic-Name
Chemical name Acrylonitrile-butadiene-styrene plastic
English name Acrylonitrile Butadiene Styrene plastic
ABS plastic-Properties
General Properties
ABS is an opaque ivory-colored granule, and its products can be
Colorful and have high gloss.ABS has a relative density of about 1.05 and low water absorption.ABS combines well with other materials, and is easy to be printed, coated, and plated.ABS has an oxygen index of 18-20, and is a flammable polymer, with yellow flames, black smoke, and a peculiar odor.
Mechanical properties
ABS has excellent mechanical properties, its impact strength is very good, can be used at very low temperatures; ABS has excellent wear resistance, good dimensional stability, and oil resistance, can be used for medium load and speed under the bearing. the creep resistance of ABS is greater than the PSF and
PC, but smaller than the PA and
POM. the bending strength and compression strength of ABS is the worse of the plastics. the mechanical properties of ABS is greatly affected by the temperature. The mechanical properties of ABS are greatly affected by temperature.
Thermal properties
The heat distortion temperature of ABS is 93~118℃, and the products can be increased about 10℃ after annealing treatment.ABS can still show certain toughness at -40℃, and can be used in the temperature range of -40~100℃.
Electrical properties
ABS has good electrical insulation and is virtually unaffected by temperature, humidity and frequency, and can be used in most environments.
Environmental Properties
ABS is not affected by water, inorganic salts, alkali and a variety of acids, but can be dissolved in ketones, aldehydes and chlorinated hydrocarbons, glacial acetic acid, vegetable oils and other erosion will produce stress cracking.ABS weathering is poor, easy to produce degradation under the action of ultraviolet light; in the outdoors in half a year, the impact strength decreased by half.
Processing performance of ABS plastic
ABS is a thermoplastic with excellent processing performance like PS, and can be processed by common processing methods.
ABS melt fluidity is better than
PVC and PC, but worse than
PE, PA and PS, similar to POM and
HIPS; ABS flow characteristics of non-Newtonian fluids; its melt viscosity and processing temperature and shear rate have a relationship, but the shear rate is more sensitive.
ABS thermal stability is good, not easy to degrade the phenomenon; ABS water absorption is high, should be dried before processing. General products drying conditions for the temperature 80 ~ 85 ℃, time 2 ~ 4h; for special requirements of the products (such as plating) drying conditions for the temperature 70 ~ 80 ℃, time 18 ~ 18h. ABS products in the processing of easy to produce internal stress, the size of the internal stress can be tested by immersing in glacial acetic acid; such as stress is too large and the products of the stress cracking absolutely prohibit, annealing should be carried out, the specific conditions for the put in the 70 ~ 80 ℃ hot air circulation in the drying oven 2 ~ 4h, and then cooled to room temperature can be.
ABS plastic - the production of ABS main raw materials and auxiliary raw materials
Main raw materials
1.1,3-Butadiene
2.Styrene
3.Acrylonitrile
Auxiliary raw materials
Auxiliary raw materials include emulsifiers, molecular weight adjusters, initiators, dispersants, terminators, antioxidants and coagulants.
ABS plastic-ABS production methods
ABS production method is divided into blending method and grafting method. Now most of the world's major producers use grafting and then blending method, this method is divided into emulsion grafting - suspension SAN blending method, emulsion grafting - suspension SAN blending method, emulsion grafting - propriety SAN blending method. The emerging propriety grafting method has great advantages in terms of production costs and environmental impact, and is the focus of future research.
ABS plastic-ABS classification
ABS according to the impact strength can be divided into: ultra-high impact type, high impact type, medium impact type and other varieties;
ABS can be divided into: injection, extrusion, calendering, vacuum, blow molding and other varieties according to the differences in molding process;
ABS according to the use and performance characteristics, but also can be divided into: general-purpose grade, heat-resistant grade, plating grade, flame retardant grade, transparent grade, anti-static, extrusion plate grade,
pipe grade and other varieties.
ABS plastic-ABS applications
The largest application areas for ABS resin are automobiles, electrical and electronic appliances, and building materials. The use in the automotive field includes automotive instrument panels, exterior body panels, interior decorative panels, steering wheels, acoustic panels, door locks, bumpers, ventilation ducts and many other parts. In terms of electrical appliances, it is widely used in refrigerators, televisions, washing machines, air conditioners, computers, copiers and other electronic appliances. As for building materials, ABS pipes, ABS sanitary ware, ABS decorative plates are widely used in the building materials industry. In addition ABS is widely used in packaging, furniture, sports and recreational goods, machinery and instrumentation industry.
