Leveling Defects in Robotic Housing Coatings

Robotic housing coatings demand ultra-smooth surfaces (Ra≤0.2μm), yet waterborne acrylics often develop orange peel and edge craters due to substrate tension variations. A leading manufacturer reported 0.5–2mm wavy defects on curved surfaces, causing 15GU gloss fluctuation in metallic coatings.

Chemi Tech's Innovation:

KMP-735 features:

Polyether-polysiloxane copolymer (MW 8000–12000 Da) reducing dynamic surface tension to 22mN/m (25℃)

Dual-functional anchoring (carboxyl/epoxy groups) enabling molecular-level spreading on aluminum/zinc substrates

Crater resistance with 300% improved defoamer synergy

Case Evidence:

Adding 0.8% KMP-735 (0.3% grinding + 0.3% adjustment + 0.2% pre-filtration):

60° gloss uniformity improved from 85±8GU to 92±1GU (ISO 2813)

Leveling time on curved surfaces reduced from 120s to 40s

Line speed increased to 4.5m/min, boosting annual output by 180,000 units

Deployed on servo motor housings and joint covers, compatible with waterborne PU/acrylic systems.