Popular Design for High Impact Abs Material - Excellent Performance ASA-GF, FR for out door products – Siko

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Popular Design for High Impact Abs Material - Excellent Performance ASA-GF, FR for out door products – Siko Detail:

Acrylonitrile styrene acrylate (ASA), also called acrylic styrene acrylonitrile, is an amorphous thermoplastic developed as an alternative to acrylonitrile butadiene styrene (ABS), but with improved weather resistance, and is widely used in the automotive industry. It is an acrylate rubber-modified styrene acrylonitrile copolymer. It is used for general prototyping in 3D printing, where its UV resistance and mechanical properties make it an excellent material for use in fused deposition modeling printers.

ASA is structurally very similar to ABS. The spherical particles of slightly cross linked acrylate rubber (instead of butadiene rubber), functioning as an impact modifier, are chemically grafted with styrene-acrylonitrile copolymer chains, and embedded in styrene-acrylonitrile matrix. The acrylate rubber differs from the butadiene based rubber by absence of double bonds, which gives the material about ten times the weathering resistance and resistance to ultraviolet radiation of ABS, higher long-term heat resistance, and better chemical resistance. ASA is significantly more resistant to environmental stress cracking than ABS, especially to alcohols and many cleaning agents. N-Butyl acrylate rubber is usually used, but other esters can be encountered too, e.g. ethyl hexyls acrylate. ASA has lower glass transition temperature than ABS, 100 °C vs 105 °C, providing better low-temperature properties to the material.

ASA Features

ASA has good mechanical and physical properties

ASA has strong weather resistance

ASA has good high temperature resistance

ASA is a kind of anti-static material, can make the surface less dust

ASA Main Application Field

Widely used in machinery, instrumentation, automotive parts, electrical and electronic, railway, home appliances, communications, textile machinery, sports and leisure products, oil pipes, fuel tanks and some precision engineering products.

Field	Application Cases
Auto Parts	Exterior mirror, radiator grille, tail damper, lamp shade and other external parts under harsh conditions such as sun and rain, strong wind blowing
Electronic	It is preferred to be used for the shell of durable equipment, such as sewing machine, telephone, kitchen equipment, satellite antenna and other all-weather shell
Building field	Roof siding and window material

ASA

SIKO ASA Grades And Description

SIKO Grade No.	Filler(%)	FR(UL-94)	Description
SPAS603F	0	V0	Especially good at out-door products, weather resistant, good strength by glassfiber reinforced.
SPAS603G20/30	20-30%	V0

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