UV Masterbatch — Plastic Fading, Chalking, or Cracking Outdoors

1. Problem

Plastic parts and films exposed to sunlight lose color, become chalky, or crack after months outdoors.

2. Symptoms

• Color fading or shift after outdoor exposure
• White chalky surface (chalking)
• Surface micro-cracking under stress
• Loss of tensile / impact after 6-24 months
• Agricultural or geotextile fabric tearing under load

3. Investigation (Before Prescribing an Additive)

Before recommending any Masterbatch, work through these checks:

• Confirm the exposure profile — geographic region (kLy/year), hours/day, seasons.
• Distinguish UV degradation from thermal or chemical attack.
• Check current formulation — is any UV package present (HALS, UV absorber)?
• Check pigment choice — some pigments accelerate degradation, some (carbon black) protect.
• Check base resin — LDPE and PP are more UV-sensitive than HDPE and PET.

Not every symptom needs an additive — sometimes the correct answer is a resin change, a process change, or drying. Investigation prevents wasted spend on a Masterbatch that does not fix the true root cause.

4. Candidate Masterbatch Family

One family commonly evaluated is UV Masterbatch — typically a HALS-based, UV-absorber-based, or combined system dispersed in a polymer carrier. The right chemistry depends on service life, exposure, and any pigment interaction.

This page does not prescribe a specific SKU. Grade selection depends on the RFQ Mini Technical Specification at the bottom.

5. Polymer Considerations

Carrier must match base resin. HALS and pigment interactions must be confirmed (e.g., some HALS interact with acidic pigments). Carbon-black-pigmented parts often already have inherent UV protection.

For polymer-specific carrier compatibility, see Wave 8 — Polymer × Masterbatch.

6. Application Examples

Common applications where this problem appears:

• Agricultural film (Wave 10 Film cluster)
• Geotextile and FIBC (Wave 10 Raffia cluster)
• Outdoor pipe and conduit (Wave 10 Pipe cluster)
• Automotive exterior parts (Wave 10 Injection cluster)

7. RFQ Mini Technical Specification (9 Fields)

Under Application-First Selling v1.0 and Problem-First Discovery v1.0, an RFQ from this page should include every field below so the supplier can respond without a clarifying round-trip:

1. Polymer — grade + MFI
2. Indoor / Outdoor service — service environment
3. UV exposure — region (kLy/year), hours/day, expected years
4. Processing method — film, injection, blow, pipe, sheet, raffia
5. Color target — color family + Pantone/RAL if applicable
6. Thickness / gauge / wall — µm or mm
7. Expected lifetime — months or years
8. Regulatory requirements — FDA, EU 10/2011, NSF-61, REACH, RoHS, UL, or industry-specific
9. Annual volume — kg or MT/year

Continue Your Path

• Understand the engineering → Wave 2 — Color Masterbatch Explained
• Match by polymer → Wave 8 — Polymer × Masterbatch
• Match by application → Wave 10 — Application × Masterbatch
• Prepare specifications → use the 9-field checklist above
• Submit RFQ → /quote

Allzone supplies industrial Masterbatch across North America. We do not publish inventory or lead-time claims on knowledge pages. Submit an RFQ with the 9 fields above for a technical response.