ASA/ABS composite board is made by compounding ASA (acrylic styrene acrylonitrile copolymer) with ABS (acrylonitrile butadiene styrene copolymer) through co extrusion and other processes. It usually uses ASA as the surface layer and ABS as the substrate, combining the weather resistance of ASA with the strength and toughness of ABS. It has outstanding outdoor durability and processing adaptability, and high comprehensive cost-effectiveness. The following is a detailed analysis of its core performance advantages:
Excellent weather resistance and anti-aging performance
UV resistance and weather resistance: ASA does not contain double bonds, and its weather resistance is about 10 times that of pure ABS. The xenon lamp aging test can reach more than 5000 hours, and it is not easily yellowed, brittle, or dull after long-term outdoor exposure. After 5 years of outdoor use, the surface glossiness retention rate can still reach about 85%, which is 30% higher than pure ABS.
Long term appearance stability: ASA's molecular structure enables it to resist UV radiation, oxidation, and moisture erosion, with excellent color stability. It is not easy to fade after long-term use and can maintain product appearance consistency.
High and low temperature resistance: Combining the low temperature impact resistance of ABS with the heat resistance of ASA, it can maintain stable performance in a wide temperature range of -40 ℃ to 80 ℃ and adapt to different climatic environments.
Excellent mechanical properties
High impact strength: Inheriting the high impact toughness of ABS, it is not easily brittle at low temperatures, can withstand large external forces and impacts, is not easily deformed or damaged, and is suitable for making components with high impact resistance requirements.
Good balance of rigidity and toughness: It combines rigidity and toughness, with moderate bending and tensile strength, meeting the load-bearing requirements of structural components, while also possessing a certain degree of flexibility, making it easy to process and shape.
Excellent dimensional stability: low water absorption, small shrinkage rate after molding, not easily deformed under temperature and humidity changes, ensuring product accuracy and assembly adaptability.
Wear resistant and scratch resistant: The surface ASA layer has high hardness, good scratch resistance and wear resistance, which can reduce surface damage in daily use and extend the service life.
Excellent chemical stability and protective performance
Chemical corrosion resistance: It has good resistance to saturated hydrocarbons, inorganic salt solutions, weak acids and bases, and various oils, and is not prone to stress cracking. It is suitable for outdoor and chemical contact risk scenarios.
Moisture resistance and electrical insulation: Good moisture resistance, not easily affected by humid environments, and also has excellent electrical insulation performance, which can be used in fields such as electrical enclosures.
Thermal stability and flame retardancy: High thermal stability, not easily decomposed due to high temperature during processing and use; Some models can achieve flame retardancy through formula adjustment to meet specific safety requirements.
Good adaptability to processing and decoration
Easy to process: Maintain the easy processing characteristics of ABS, with a high melt index, and can be formed through various processes such as vacuum forming, injection molding, cutting, drilling, milling, etc., resulting in high production efficiency.
Diversified surface treatment: It can achieve various surface effects such as high gloss, matte, frosted, and patterned, and is easy to print (UV printing, screen printing, etc.), spray, and film, meeting personalized decoration needs.
Reliable composite process: Co extrusion or hot pressing composite processes are commonly used, with tight interlayer bonding, making it difficult to separate layers during molding and stretching, and good structural stability.
High cost-effectiveness and environmental advantages
Cost controllable: The composite structure with ABS as the base material and ASA as the surface layer ensures weather resistance while being lower in cost compared to pure ASA board, with outstanding comprehensive cost-effectiveness.
Lightweight and environmentally friendly: With a density of about 1.1g/cm ³, it is lighter than some traditional materials such as fiberglass and recyclable, in line with the trend of environmental protection and lightweight.
Typical application scenarios
This board is widely used in automotive exterior parts (grilles, rearview mirror shells), building exterior wall panels, outdoor furniture, air conditioning covers, advertising boards, electric vehicle decorative parts, refrigerator panels, etc., especially suitable for long-term outdoor use and fields with high requirements for appearance and durability