Craters and fisheyes are common in waterborne coatings on low-energy substrates (e.g., PE plastics) or oily surfaces. Chemi Tech wetting agents address these through molecular innovation:
Craters stem from local tension mismatch, while fisheyes arise from oil contamination. Chemi Tech’s fluorocarbon-modified agents provide:
Oil Tolerance: Emulsify contaminants to prevent fisheyes in imperfectly cleaned automotive parts;
Rapid Migration: Reduce dynamic tension to ≤25 mN/m within 3–5 seconds, eliminating spray-induced craters.
For nylon and silicone (surface energy <30 mN/m), phosphate-acrylate agents offer:
Polar Anchoring: Hydrogen bonding with substrates enhances adhesion;
Spreading Enhancement: 0.3% addition increases coverage on nylon by 50%, preventing edge retraction.
Automated lines require millisecond-level spreading. Key features include:
Low-Shear Stability: Maintain microflow integrity to protect molecular structures (e.g., in PCM coatings);
Dynamic Tension Control: Instant tension reduction (<100 ms) ensures uniformity on complex geometries.
Agents improve final appearance by optimizing material distribution:
Pigment Stabilization: Prevent floating in high-pigment systems (e.g., metallic paints);
Gloss Consistency: Reduce micro-pits in matte coatings, narrowing gloss fluctuation from ±5 GU to ±2 GU.
Smart Dosing: Gradient additions (0.1%–1.0%) based on substrate type;
Synergy Validation: Compatibility with matting agents/thickeners to avoid competitive migration.
Guangzhou Chemi Tech New Material Co., Ltd.
Address : No. 3 Road, Lanshan Village, Xiancun Town, Zengcheng District, Guangzhou City
Contact : +86-19820415595(Manager Fang)
Tel : +86-13414362583(Manager Lee)
E-mail : crystal@gzchemitech.com