PC/ASA

Thermoplastics > Alloys

PC/ASA acrylonitrile Styrene Acrylate and Polycarbonate
Blends, also called alloy, alloy or blend, the acrylonitrile Styrene Acrylate and Polycarbonate PC/ASA, produces parts with toughness, heat resistance and dimensional stability. Many properties of this combination are intermediate to those with the ASA or PC themselves. The acrylic rubber ASA has greater stability than butadiénico ABS rubber so that the molded products with PC / ASA have greater resistance interferes with ABS manufactured on or ABS / PC. The tenacity of the parts not affected over time by accelerated aging tests. On the other hand, the PC / ABS league has some limitations r esistance poor chemistry, m wing weatherability, b aja fatigue resistance.
Symbols			Formula
PC/ASA ASA/PC ASA-PC PC-ASA PC número de registro CAS 25971-63-5 ASA número de registro CAS 26299- 47-8
Proprierties PC/ASA
High impact resistance even at low temperatures high strength high stiffness Processability Low total and high dimensional accuracy contraction Paintable High brightness Cromables Weatherproof UV resistant Low moisture absorption HDT high Chemical resistance range Moldability
Products range PC/ASA
ASA / PC is provided in a wide variety of degree including unfilled / unreinforced and grade containing glass fiber, mineral filler, hybrid two or goes filled with special additives and special lubricant, colored degrees, high gloss, cromables, high impact, with improved thermal properties, reinforced, flame-retardant, conductors, high density. Since the polycarbonate lends itself to a wide variety of products, properties and regulatory approvals, it can be adapted to meet the needs of specific applications.
Physica and mechanical properties PC/ASA
The presence of acrylonitrile conducive opacity polymers that contain, for this reason, all items of PC / ASA are opaque. The material is permeable to most gases or vapors normally found in the atmosphere, carbon vapor, water, oxygen and nitrogen dioxide can pass through this plastic. Parts molded PC / ASA can expon erse to ultraviolet radiation or outdoor without these conditions affect the plastic sensitively due to Acrylonitrile. Has dimensional stability, toughness, rigidity and hardness are joined in the PC / ASA.
Thermal properties PC / ASA
You can be added flame retardants in the alloy and allowing use applications that require this feature. Thermally parts can withstand high temperature as 115 ° C continuous use and HDT of 108 ° C.
Electrical Properties PC / ASA
Being a slightly polar material, with a high TG and low water absorption, the electrical properties are hardly affected by the temperature variation, frequency (up to 106 Hz) and humidity within normal working ranges. The alloy is basically insulating to electric current.
Optical Properties PC / ASA
PC / ASA saves on painting costs, while offering a good surface quality and shine in the shade. Prolonged exposure to sunlight produces a frangible thin film, causing a color change and reducing the surface gloss and flexural strength. Pigmentation in black provides greater resistance to weathering
Chemical properties of PC / ASA
The chemical structure of this alloy resists the action of saturated compounds, oils, greases and diluted acids environmental conditions, but strong bases as sodium hydroxide, ammonia and amines affect the material due to carbonate having.
Processability PC / ASA
PC / ASA can be easily molded by injection, extrusion or molding or using the rotation system. The high impact are more difficult because having a higher rubber content makes them more viscous.
Compound PC/ASA
PC and ASA mixtures device selectable double screw extruder .The manufacturing method has a great influence on the morphology of the PC / ASA.
Notes
Polycarbonates (PC) are used in the automotive industry two physical and mechanical as high impact strength and ductility properties. Polycarbonates are mixed with t erpolímeros of ABS (acrylonitrile-butadiene-styrene) and ASA (acrylonitrile styrene acrylate) for indoor and outdoor applications automotive component to achieve good fitness yp mechanical roperties. Resistance requirement than 50 kJ / m2 impact. L os degrees of PC / ASA with stabilization UV are developed for exterior applications unpainted. Matrix PC / ASA UV stabilized performance of UV exposure of 1500 has a total of 1890 kJ / m2mostrra degradation of polycarbonate is to celerada by UV radiation in the presence of oxygen and moisture. The change is within the control limits. After exposure the sample for 500 h, as UV radiation. UV degradation of PC / ASA leads to several important changes in its IR spectrum. The main impairments were based on photooxidation and Photo-Fries rearrangement PC, color change to the yellowing of the polymer.
Applications PC/ASA
Among the uses of PC / ASA include the bodies and housings for household appliances, because the supporting material suitably UV radiation, weathering and heat. There are other alloys competing with this material, such as ABS / PC and modified polyamides which also support the elements. It has increased in recent years dramatically the production of various automotive parts with this plastic because of its light weight and low cost. D ue to the properties of PC / ASA are good enough for many applications, among which are; Switches, sockets, cable channel, enclosures, housings transformer.