Fire-Resistant PU Foam Sealant (B1 level)

Product Introduction

Fire-Resistant PU Foam Sealant is a one-component, moisture-curing, multi-purpose elastic sealing materal esigned for filing and insulating. t is widelyused for seaing gapsaround bulding doorshwindows, expansion joints,and holes,Upon contactwith ai, the product rapidly expands and soidifes into a fexible closed-celfoam structure, offeringexcelent adhesion,sound insulation, and thermal resistance.,ldeal forconstnuction gaps requiring high fire performance, this sealant meets B1-grade fre safety standards andis suitable for insulation projects demanding strict fireproofing.

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

Product Features
High Expansion Rate: High vertical expansion rate for full and dense filling.

Rapid Curing: Surface drying time of 10-20 minutes (at 25°C/50%RH).

Strong Adhesion: Bonds to various substrates such as concrete, wood, metal, and PVC.
Low Shrinkage: Low shrinkage rate after curing for long-term stability.

Wide Temperature Resistance: Withstands -40°C to +90°C, suitable for harsh environments.

Eco-Friendly & Low VOC: Formaldehyde-free.

Applications
Construction & Decoration:
Gap filling for door and window frames
Sealing of wall gaps and joints

Blocking of pipe penetrations and openings

Insulation Projects:
Thermal insulation repair for cold storage, air conditioning ducts, and solar water heaters
Horticulture & Landscaping:
Flower arrangement and garden landscaping (lightweight and aesthetically pleasing)

Automotive & Marine:
Soundproofing and shock-absorbing filling for cavity spaces

Other Applications:
Fixing of billboards and signage
Vibration damping for equipment, machinery, etc.

Usage Guide
Pre-construction Preparation
1. Clean the substrate: Ensure the construction surface is dry, free of oil stains,and loose particles.
2. Shake the product well: Forcefully shake the can for 20-30 seconds before use to ensure the materials are evenly mixed.

3. Install the spray gun: lf using a gun-type package, install a special foam glue gun.
Construction Steps
1.Inverted Application: Keep the can inverted, slowly press the valve, and fill evenly from the bottom of the gap upward.

2.Dosage Control: The filling amount should not exceed 50%-70% of the gap volume (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 be performed 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.