Overview
Polymeric Marisan is a two-component polyurethane-based grouting material designed for rapid sealing and stabilization in demanding industrial environments. It reacts upon mixing to form a rigid or flexible foam, depending on the formulation. Originally developed for mining and tunneling, its use has expanded to civil engineering and infrastructure repair due to its adaptability and performance under extreme conditions. The material is favored for its fast curing time, which allows for quick project turnaround, and its ability to bond strongly to diverse substrates, including concrete, rock, and metal. Its waterproofing capabilities make it ideal for applications where moisture ingress is a concern.
Physical and Chemical Properties
Polymeric Marisan exhibits low viscosity before curing, enabling deep penetration into cracks and fissures. Upon curing, it expands to fill voids and hardens into a durable, closed-cell foam with high compressive strength (typically 10–30 MPa). The cured material is resistant to water, acids, alkalis, and hydrocarbons, ensuring long-term stability in harsh environments. Its reaction time and expansion ratio can be adjusted by modifying the mixing ratio or adding catalysts, providing flexibility for different project requirements. The material is typically supplied in dual-component cartridges or bulk containers for large-scale applications.
Main Applications
In mining, Polymeric Marisan is used to stabilize loose rock formations and seal water leaks in shafts and tunnels. In construction, it repairs concrete cracks, anchors bolts, and reinforces foundations. The material is also employed in oil and gas wells for zonal isolation and pipeline sealing. Recent innovations include its use in earthquake-prone areas for structural reinforcement and in underground utilities to prevent soil erosion. Its lightweight yet strong foam structure minimizes additional load on existing structures, a critical factor in retrofitting projects.
Safety and Storage
Uncured Polymeric Marisan contains isocyanate compounds, which require handling with nitrile gloves and protective eyewear. Adequate ventilation is essential to avoid inhalation of vapors during application. Spills should be contained and cleaned with absorbent materials before curing occurs. Storage temperatures should remain between 5°C and 25°C to prevent premature polymerization. Containers must be kept tightly sealed to avoid moisture absorption, which can degrade performance. Shelf life is typically 12 months from production if stored properly.
B2B Procurement Guide
When sourcing Polymeric Marisan, prioritize suppliers with ISO 9001 certification to ensure consistent quality. Request technical data sheets (TDS) detailing curing time, expansion ratio, and bond strength. For large projects, consider on-site testing to verify compatibility with local environmental conditions. Bulk purchases (e.g., 200 kg drums) can reduce costs by 15–20%. Logistics planning is crucial, as some formulations may require temperature-controlled transport. Establish a supplier audit process to evaluate raw material sourcing and manufacturing practices, particularly for projects with sustainability requirements.
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