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High Rigidity ASA

Updated: 2026-08-06

Overview

High Rigidity ASA is a specialized terpolymer derived from acrylonitrile, styrene, and acrylate rubber. It is engineered to deliver superior mechanical performance and environmental resistance compared to standard ASA or ABS plastics. The acrylate component provides exceptional weatherability, making it a preferred choice for applications exposed to sunlight, rain, and temperature fluctuations. Unlike traditional plastics, High Rigidity ASA retains its mechanical properties (e.g., tensile strength, dimensional stability) even under prolonged outdoor exposure. This makes it a cost-effective alternative to metals or painted plastics in industries like automotive, where it is used for mirror housings, grilles, and trim components.

Physical and Chemical Properties

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High Rigidity ASA exhibits a balanced combination of stiffness and impact resistance, with a tensile strength ranging from 40–60 MPa and a notched Izod impact strength of 10–30 kJ/m². Its thermal stability allows continuous use at temperatures up to 80–90°C, though formulations with heat stabilizers can extend this range. The material's UV resistance stems from the acrylate rubber phase, which absorbs and dissipates ultraviolet radiation without degrading. Chemically, it resists alkalis, dilute acids, and oils but may swell in aromatic hydrocarbons. Its low water absorption rate (<0.5%) ensures minimal dimensional changes in humid environments.

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Main Applications

In the automotive sector, High Rigidity ASA is used for exterior parts requiring both aesthetics and durability, such as bumper fascias, roof rails, and door handles. Its color retention eliminates the need for painting, reducing production costs. Construction applications include window profiles, siding, and fencing due to its resistance to fading and warping. Consumer goods like garden equipment, outdoor furniture, and sports gear benefit from its lightweight yet robust nature. In electronics, it serves as a housing material for solar inverters and outdoor surveillance cameras, where UV protection is critical.

Safety and Storage

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High Rigidity ASA is classified as non-hazardous under normal handling conditions. However, processing at high temperatures (e.g., injection molding) may release small amounts of styrene or acrylonitrile vapors, requiring adequate ventilation. Dust generated during machining should be controlled to prevent respiratory irritation. Storage recommendations include keeping the material in its original packaging to avoid moisture absorption, which can affect processing. Pellets should be dried at 80–85°C for 2–4 hours before use if exposed to humid environments. Shelf life is typically 12–24 months when stored properly.

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B2B Procurement Guide

When sourcing High Rigidity ASA, buyers should prioritize suppliers with ISO 9001 certification and material traceability. Key specifications to verify include UV stability (e.g., QUV testing results), impact modifiers (if required for low-temperature performance), and regulatory compliance (e.g., RoHS, REACH). For large-volume orders, negotiate pricing based on resin market trends, as ASA prices fluctuate with acrylonitrile feedstock costs. Consider regional suppliers to minimize logistics expenses. Samples should be tested for color consistency and mechanical properties before bulk procurement.

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