Introduction of Aofeng brand fire grade PU foam sealant

The main purpose:

Filling and dustproofing of cracks and holes, sealing of the remaining holes in the air-conditioning tunnel, sealing, heat insulation and sound insulation of the centralized heating system of pipes and sewers.

Introduction of PU foam sealant

1. Introduction of polyurethane foam sealant

Polyurethane (PU) foam sealant is a one-component, moisture-curing, multi-purpose polyurethane foam filled elastomeric sealant. It fills the polyurethane prepolymer, catalyst and gas propellant into the pressure-resistant iron aerosol can. During the construction, the aerosol-like colloid is sprayed to the part to be applied through the matching glue gun or manual nozzle, and the molding is completed in a short time. , foaming, bonding and sealing processes. Generally, the dry time is within 10 minutes (at room temperature 20 °C), and the dry time varies with ambient temperature and humidity. Under normal circumstances, the total dry time in summer is about 4-6 hours, and in winter, it takes 24 hours to zero. It will take longer or longer to dry. The cured foamed elastomer has excellent properties such as bonding, waterproofing, heat expansion and contraction, heat insulation, sound insulation and even flame retardant (limited to flame retardant type), and is widely used for building door and window seams, component expansion joints and filling of holes. seal. Under normal conditions of use (and in the presence of a coating on the outside), it is estimated that the service life is not less than ten years, and the cured foam maintains good elasticity and bonding in the temperature range of -10 ° C to 80 ° C. force. The decorative elf management system case display can quickly and accurately display various case pictures, let customers understand their needs in an intuitive way, quickly make budgets for customer needs, and enhance customer experience.

2. Use and construction precautions

Remove dirt, grease, and spray the surface to be filled with a little water mist.

It is used in the temperature range of 0 °C ~ 40 °C. If it is used in the cold season, in order to ensure the use effect, it is recommended to preheat the tank in a 30 °C environment.

Shake vigorously up and down for more than one minute before construction. Keep the tank in an inverted state during construction.

After the construction of each tank is completed, please clean the threaded part of the glue gun with special cleaning agent. After each continuous construction, please clean the whole glue gun tube with special cleaning agent to avoid curing blockage.

Repair and cutting should be done after the foam has fully cured. It is worth noting that cutting the foamed skin will reduce the foam strength and reduce the sealing and waterproofing of the foam.

This product is not resistant to UV rays and is recommended to be further covered and painted.

3. Safety instructions

It is forbidden to puncture or burn tanks and empty tanks. Keep away from fire and heat sources during construction.

During the transportation and storage process, open flame is strictly forbidden to avoid impact and sun exposure. The temperature of the tank should not exceed 45 °C. It can't be inverted. Under normal conditions, the tank is under pressure. If it is improperly handled, there is a danger of explosion (or bursting).

Wear eye protection and gloves during construction and ensure good ventilation.

If the foam accidentally touches the eyes and skin, wash it off with a cleanser immediately, then rinse with water and consult a doctor if necessary. The cured foam is generally only mechanically removed.

This product contains an isocyanate component, and the uncured colloid is irritating.

Keep tanks and empty cans out of reach of children to avoid accidents and dangers.

This product belongs to flammable and explosive dangerous goods. Please carry out transportation and storage according to relevant regulations. Store the product in a cool and dry place below 25 °C. The shelf life is generally about 9-12 months.

With strong technical force and excellent production equipment, Aofeng Group can produce a full range of high, medium and low grade polyurethane foam sealants. Welcome new and old customers to come to buy!