Stabilizers. Fillers.
Pigments. Flame retardants.
Modifying plastics.
Plastic additive reference. UV stabilizers, antioxidants, flame retardants, glass fiber, mineral fillers. Modify base plastic properties for specific applications.
Key principles.
Outdoor service
HALS (hindered amine), UV absorbers. Extend outdoor life 5-20×.
Heat stability
Prevent oxidative degradation during processing and service.
UL94 ratings
Bromine, phosphorus, aluminum hydroxide. Per UL94 V-2/V-1/V-0 rating needed.
Stiffness
15-50% glass loadings. 2-5× stiffness improvement.
Cost reduction
Talc, calcium carbonate. Cheaper, lower properties.
Internal/external
Improve flow, reduce friction. Critical for processing.
FAQ
Why use additives?
Modify base plastic for specific application — UV stability, flame retardancy, stiffness, cost reduction.
Glass-filled vs unfilled?
Glass-filled 2-5× stiffer, harder, lower elongation. Easier to mold thin walls.
UV stabilization extent?
Standard ABS 1-2 year outdoor. UV-stabilized 5-15 year. Carbon-black 20+ year.
Flame retardant tradeoffs?
Bromine: highly effective but environmental concerns. Phosphorus: less effective but more sustainable.
Color additives?
Pigments (insoluble) or dyes (soluble). Pigments more lightfast. Choose per UV stability needs.
Cost impact?
Glass fiber 30% loading raises cost ~50%. Premium additives (UV, flame) add $1-3/kg.
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