POLYURETHANE ADHESIVE PUTTY FOR STONE
What is Polyurethane Adhesive Putty for Stone
Polyurethane adhesive putty for stone is a solvent-free, high-strength, two-component bonding material designed for fixing, filling and repairing natural stones, marble, concrete and similar mineral substrates. It provides excellent adhesion, flexibility, impact resistance and long-term durability.
Description of Polyurethane Adhesive Putty for Stone
This adhesive putty is formulated using polyols, isocyanates, mineral fillers and rheology modifiers to create a thixotropic, easy-to-apply structure. It cures through a chemical reaction between components A and B, forming a tough and moisture-resistant polymer network.
Definition of Solvent-Free Polyurethane Adhesive Putty for Stone
A solvent-free system means the adhesive contains no volatile organic solvents. The curing takes place entirely through polymerization, allowing safer application, minimal shrinkage and stronger adhesion.
Overview of Two-Component and Solvent-Free Polyurethane Adhesive Putty for Stone
Two-component polyurethane systems offer controlled curing, high chemical resistance and superior bonding to stone surfaces. The absence of solvents enhances environmental compatibility and mechanical stability.
Meaning of Polyurethane Adhesive Putty for Stone
The term refers to a heavy-duty stone bonding material with putty-like consistency, used particularly in construction, restoration and industrial stone applications.
Preparation of Solvent-Free Polyurethane Adhesive Putty for Stone
Component A (polyol blend) is mixed with fillers, pigments and additives until homogeneous. Component B (isocyanate) is added right before application. The mixture is applied directly to the stone surface and allowed to cure fully.
Prepare Polyurethane Adhesive Putty for Stone
The two components must be measured accurately, blended thoroughly and applied quickly to avoid premature curing.
Making Polyurethane Adhesive Putty for Stone
Production requires controlled mixing, proper viscosity adjustment and quality testing for curing time, hardness and adhesion strength.
Make Solvent-Free Polyurethane Adhesive Putty for Stone
The formulation typically includes polyether or polyester polyols, MDI-based isocyanates, calcium carbonate, silica, thickeners and adhesion promoters.
Polyurethane Adhesive Putty for Stone Manufacturing Process
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Pre-blend polyols with additives.
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Add fillers and mix to uniform paste.
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Degas mixture.
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Package Component A and Component B separately.
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Perform QC tests.
Formula of Polyurethane Adhesive Putty for Stone
Sample formulation (indicative):
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Polyol blend
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MDI-based hardener
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Mineral fillers (CaCO₃, silica)
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Plasticizers
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Adhesion promoters
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Rheology modifiers
Formulations of Solvent-Free Polyurethane Adhesive Putty
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A-Component: Polyol + filler + additives
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B-Component: Isocyanate hardener
Polyurethane Adhesive Putty for Stone Production Process
Components are produced separately, matched for reactivity, and packaged as a two-component system for end-user mixing.
Properties of Solvent-Free Polyurethane Adhesive Putty for Stone
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High adhesion strength
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Excellent flexibility
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Chemical and water resistance
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Thixotropic, non-sag structure
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Long open time and durable curing
Applications of Polyurethane Adhesive Putty for Stone
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Fixing and bonding natural stones
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Marble repair and restoration
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Filling cracks and gaps in stone
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Heavy-duty construction bonding
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Structural stone reinforcements
Usage of Two-Component Solvent-Free Polyurethane Adhesive Putty for Stone
Mix A+B at specified ratio, apply to clean and dry stone surfaces, clamp if needed, allow curing under recommended conditions.
Types of Solvent-Free Polyurethane Adhesive Putty for Stone
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Fast-curing PU putty
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Flexible PU stone putty
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High-viscosity gap-filling PU adhesive
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Structural stone bonding putty
Advantages of Polyurethane Adhesive Putty for Stone
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Strong adhesion to porous mineral surfaces
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Solvent-free, low-odor formulation
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Excellent durability
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Shock and vibration resistance
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Suitable for indoor/outdoor use
Summary
Polyurethane adhesive putty for stone is a high-performance, solvent-free, two-component adhesive designed for bonding and repairing stone, marble and similar mineral materials. Its polymer structure provides exceptional mechanical strength, moisture resistance and long-term durability. With optimized formulations, it serves as a premium bonding solution for construction, industrial and restoration applications.
