Automotive Industry

Automotive Silicone Masterbatch & PP Anti-Scratch Solutions

Scratched door panels, floating glass fibers on a visible PP bumper bracket, squeaky trim that fails the scratch-and-mar test — these are the defects that cost automotive Tier-1s the most rework hours. Xiangxi's PP anti-scratch agents (DX75 series), silicone masterbatches and carrier-free silicones are engineered specifically for automotive interior and exterior compounds, improving scratch resistance, surface feel and fiber coverage while meeting low-VOC and low-migration requirements.

Key Challenges in Automotive Plastics

• Failing scratch & mar tests — interior PP parts must pass standardized scratch tests (e.g., cross-hatch, five-finger scratch) with low scratch gloss and width.
• Floating fiber (glass fiber exposure) — GF-reinforced PA/PP parts show fibers on the surface, causing poor appearance and paint issues.
• Sticky injection and frequent mold cleaning — high-fastness resins cause mold deposit and slow cycles.
• VOC and odor limits — interior materials must meet strict low-VOC, low-fogging requirements from OEMs.
• Long-term aging — parts must keep appearance and mechanical performance over 10+ years of service.

Recommended Xiangxi Solutions

1. PP Anti-Scratch Agent — DX75 Series

The DX75 series PP anti-scratch agent significantly reduces scratch visibility and coefficient of friction on talc-filled and unfilled PP interior parts. It stays non-precipitating over the part's lifetime, keeping the surface stable after wiping and sunlight aging.

2. Non-Carrier Silicone Masterbatch & Powder

Our carrier-free silicone series disperses ultra-high molecular weight siloxane directly into PA, PP and PC without a carrier resin conflict. It eliminates floating fiber in glass-filled exterior parts, improves demolding, reduces mold cleaning frequency and keeps parts dimensionally stable.

3. Overmolding & Toughening Masterbatch

For soft-touch overmolding and impact modification of interior trim, the overmolding & toughening masterbatch improves adhesion between hard skeleton and soft TPE layers, reducing delamination risk.

Typical Automotive Applications

Why Automotive Tier-1s Work with Xiangxi

Founded in 2016 in Xiamen, China, Xiangxi is a national-level high-tech enterprise with 28+ patents, 8+ production lines and 20,000+ tons/year capacity, managed under ISO9001. Our additives are designed to help compounds meet OEM low-VOC expectations and REACH/RoHS compliance, and our R&D team (40% of staff) provides formulation support, test-method alignment and stable batch-to-batch supply for automotive programs.

FAQ — Automotive Plastics

Which grade should I use to pass the five-finger scratch test on talc-filled PP?

The DX75 series is our standard choice for talc-filled interior PP. Dosage is typically 1–3%; we support lab scratch testing on your compound to fix the grade and loading before production.

Can the non-carrier silicone remove floating fiber on glass-filled PA bumper brackets?

Yes. Because it contains no carrier resin, the siloxane phase coats and wets the glass fiber surface, suppressing fiber exposure while improving flow — a common fix for GF-PA and GF-PP appearance defects.

Do Xiangxi additives precipitate or cause fogging over time?

No. Our siloxane systems are high molecular weight and non-migrating, so they do not bloom, precipitate or fog — a key difference from low-molecular-weight silicone oils.

Send us your scratch-test spec or a failing part photo — contact our engineers for a free trial recommendation within 24 hours.