Overview
Polyurethane adhesive putty for marble is a two-component, solvent-free bonding and gap-filling system designed for repairing, fixing, and leveling marble, natural stone, and decorative surfaces. It provides high adhesion strength, chemical resistance, and durable mechanical stability.
Description
This adhesive putty is based on polyurethane prepolymer (Part A) and a hardener (Part B). When mixed, it forms a paste with excellent filling performance, moisture resistance, and long-term durability on marble substrates.
Definition
A solvent-free, high-viscosity polyurethane putty formulated for structural bonding and repair of marble surfaces.
Meaning
The product functions both as a strong adhesive and a repair putty for cracks, holes, broken edges, and surface imperfections on marble.
Preparation Method
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Blend Polyurethane Prepolymer: Heat gently if required to adjust viscosity.
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Add Fillers: Incorporate calcium carbonate or marble powder for body.
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Add Additives: Include thixotropic agents, wetting agents, plasticizers.
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Introduce Hardener: Mix with isocyanate-based curing agent before use.
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Adjust Consistency: Modify filler ratio depending on application thickness.
How to Make (Procedure)
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Mix Part A (polyurethane resin blend) with Part B (curing agent) at the recommended ratio.
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Stir until a uniform putty texture is obtained.
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Apply directly to clean, dry marble surfaces.
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Allow curing at room temperature.
Manufacturing Process
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Prepolymer synthesis
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Addition of fillers and rheology modifiers
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Vacuum deaeration
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Packaging as two components
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Final QC tests (viscosity, curing time, adhesion)
Formula
Part A (Resin Base):
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Polyurethane prepolymer
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Marble powder
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Calcium carbonate
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Thixotropic agent
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Dispersing additive
Part B (Hardener):
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Polyisocyanate curing agent
Formulations
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Standard Repair Grade
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High-Strength Structural Grade
Production Process
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Controlled blending → filler dispersion → viscosity adjustment → filtration → packaging as 2K system.
Properties
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Strong adhesion to marble
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Solvent-free, low odor
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High chemical and abrasion resistance
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Excellent gap-filling characteristics
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Moisture-resistant curing
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Easy to sand and polish after curing
Applications
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Marble crack repair
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Bonding marble slabs
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Fixing broken edges
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Filling holes, gaps, and imperfections
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Restoration and construction applications
Usage
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Mix two components before application
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Apply with spatula
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Allow full cure before sanding or finishing
Types
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Repair putty
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Structural bonding putty
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Fast-cure formulation
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High-viscosity paste grade
Advantages
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Excellent adhesion strength
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Long-lasting structural performance
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Easy application
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Compatible with natural stone
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High mechanical and chemical resistance
SUMMARY
Polyurethane adhesive putty for marble is a solvent-free, two-component bonding and repair system offering high strength, durability, and excellent filling capacity. It is widely used for marble restoration, fixing, and structural bonding in construction and decorative applications.
