Mortar-Grade PU Foam Sealant

Product Introduction

Mortar-Grade PU Foam Sealant is an innovative composite foaming material.lt integrates the high adhesivenes of poyurethane with the mechanical strength of mortarforming a lightweight,high-strength fiing material with excelen performance. ts unique foam.mortar composite structure not only maintains the fexibity and constructiorpossesses compressive and high-temperature resistance characteristics similar to cement-based materials. it is specially designed forconvenience of polyurethane but alsobuildina structure reinforcement, sealing.and heavy-dutyfilling requirements

Main components
Diphenylmethane diisocyanate (MDl), polyether polyol, blowing agent,catalyst, surfactant, additives, etc.

Product Features
Composite Structure Performance: The polyurethane foam matrix wraps inorganicmortar particles, combining elasticity and rigidity.

Ultra-high Compressive Strength: The compressive strength after curing can reachover 5MPa, far exceeding ordinary foam adhesives.

Low Shrinkage Rate: Excellent volume stability (curing shrinkage rate <1%), avoidingthe risk of cracking.
Hydrophobic and Moisture-proof: Closed-cell rate >90%, no leakage or mildew inlong-term water immersion environments.

Convenient Construction: Retaining the polyurethane spraying process, no mechanicalmixing required, directly sprayed into shape.

Applications

Building reinforcement and joint filling:

Concrete expansion joints/post-cast strips: Low shrinkage and high compressivestrength to prevent cracking and water seepage.

Autoclaved Aerated Concrete (AAC) block joints: Solves the cracking problem oftraditional mortars and enhances wall integrity.

Prefabricated building joints: Quickly fills installation gaps of PC components, combin-ing elasticity and strength.
Underground engineering:

Deformation joints in metro tunnels and post-cast strip filling in basements (forimpermeability-required scenarios).

Industrial floors:
.Sealing expansion joints in factory floors (resistant to forklift ).Although foam mortar-type polyurethane foam adhesive has relatively high compressivestrength , it is not recommended to be used alone as a structural load-bearing material.
Application Scenarios & Alternative Solutions

Application	Whether Applicable	Alternative Solutions
Non-load-bearing filling(such as partition wall gaps)	Yes	/
Reinforcernent of load-bearing walls/columns	No	Anchoring adhesive + high-strength grouting material
Sealing of floor expansion joints	Partialy applicable	Combined with silicone sealant + fiber reinforcernent
Fixing of pipeline supports and hangers	No	Chemical anchor bolts or mechanical anchoring

Construction Steps
1.Inverted Application: Keep the can inverted, slowly press the valve, and fillevenly from the bottom of the gap upward.

2.Dosage Control: The filling amount should not exceed 50%-70% of the gapvolume (to reserve expansion space).

3.Trimming and Curing:
After initial curing for 10-30 minutes, trim excess foam with a blade.

4.Full Curing: Sanding, painting,and other subsequent treatments can beperformed after 24 hours.

Environmental Requirements for Product Use
Optimal Construction Temperature: 5°C to 35°C

Humidity impact:if humidityis too low(<30%),curing time may be prolonged. lt is recommended to spray water mist to accelerate curing.
Packaging & Storage
15 pieces per carton (750m per piece). Customization is supported.

Shelf Life: 12 months (unopened)Store in a cool environment at 5°C~25°C. Avoid exposure to high or lowtemperature extremes.

Key Technical Specifications  Production Standard :JC936-2004

(This product manual is for reference only. The specific performance shall be subject to the actual test report.)For MSDS (lMaterial Safety Data Sheet) or customized technical solutions, please contact our technical personnel.