Production of gypsum-based cultured stone and wall tiles: Optimized selection of RTV2 silicone molds

Gypsum-based cultured stone requires specific requirements for mold surface finish and demolding performance. Our RTV2 liquid silicone is optimized for gypsum casting, ensuring a perfect surface and smooth demolding.

Gypsum-based cultured stone and decorative wall tiles are widely popular in interior decoration applications due to their lightweight, fire resistance, and ease of installation. The production of gypsum stone places specific requirements on RTV2 silicone molds.

Challenges of Gypsum Casting:

The unique properties of gypsum slurry affect mold performance:

• High surface detail requirements: Gypsum has an extremely strong ability to replicate fine textures; any imperfections in the mold will be visible in the finished product.
• Rapid curing speed: Gypsum hardens within 15–30 minutes, and the released heat can stress the mold material.
• Water absorption: Gypsum absorbs moisture from the mold surface; improper mold material formulation may lead to sticking.
• Abrasiveness: Gypsum particles have slight abrasiveness; long-term use will wear down the mold surface.

Our RTV2 Liquid Silicone for Plaster Casting:

We offer RTV2 silicone specifically optimized for plaster casting:

• Ultra-smooth Surface: Ensures flawless, defect-free surfaces on plaster castings.
• Excellent Release Properties: Plaster can be easily demolded without release agents, protecting fine details.
• Heat Resistance: Resistant to the exothermic heat of plaster curing without degradation.
• Abrasion Resistance: Surface quality remains unchanged after hundreds of plaster castings.

Production Efficiency: The rapid curing characteristics of plaster allow factories to complete 4–8 casting cycles per day, making mold durability paramount. Our plaster-grade RTV2 liquid silicone allows for 300–600 castings per mold, providing interior stone and wall tile manufacturers with high productivity and low per-mold costs.

Keywords: Plaster cultured stone molds, RTV2 plaster casting, plaster wall tile silicone, plaster mold materials