Foaming principle, scope of use and functions of styrofoam

One-component polyurethane foam(OCF )is a product of the cross-combination of aerosol technology and polyurethane foam technology, It is a kind of polyurethane prepolymer Special polyurethane products filled with chemicals, foaming agents, catalysts and other components into pressure-resistant aerosol cans. When the material is sprayed from the aerosol can, the foamy polyurethane material will rapidly expand and solidify with air or moisture in the matrix in contact to form foam. The cured 0CFfoam has various effects such as caulking, bonding, sealing, heat insulation, and sound absorption. It is an environmentally friendly, energy-saving, and easy-to-use building material that can be used in Sealing, sealing, gap filling, fixing and bonding, thermal insulation and sound insulation, especially suitable for sealing, sealing and waterproofing between plastic steel or aluminum alloy doors, windows and walls.

Classification, differences and usage of styrofoam：

Foam rubber split gun type and tube type（commonly saidOneone-time）Two types, the tubular type is mainly used for retail design, which means that the tubular type is only suitable for plugging holes and preventing leaks in homes with small spaces. Moreover, generally the quality of tube-type products is not very good. Most companies will not use tube-type packaging and high-quality products, because tube-type products The pressure is lower than that of the gun type, so sometimes it cannot be drilled cleanly, and it is easy to cause problems such as the valve not being able to be driven out. In addition, the bubble holes produced by the tube type product are not as delicate as those of the gun type, and the expansion force is relatively large. The cost of the gun type is actually lower than that of the tube type.

How to use gun-type products and steps：

1, Get itOneClean the polyurethane foam gun with polyurethane cleaning agent to ensure smooth flow;

2. Get it again A bottle of foaming agent, hold the middle of the can body firmly with your hands, and shake it vigorously along the transverse direction of the can body for at least 20 times to ensure that the prepolymer in the can is fully mixed font>;

3、Remove the protective leather cover of the valvei on the foaming agent thread ring, remove the cleaning agent from the foaming gun, and remove the foaming agent along the threads Install the can body onto the interface of the foaming gun;

4. Hold the handle of the foaming gun, ensure that the material tank is placed above and the foaming gun is below the material tank. Open the flow at the rear of the foaming gun. Control valve;

5. Aim the gun head at the bottom or inside of the part to be filled, and gently pull the trigger to start construction. It can be adjusted to the appropriate flow through the flow relief valve behind the foaming gun;

6、一After the can is sprayed, if you still need to fill it, you can immediately remove the empty can and follow the instructions 3Reinstall the foaming agent and continue Construction;

7、After the construction is completed, remove the material tank in time and replace it with a special cleaning agent to clean the foaming gun to prevent the residual material from solidifying, clogging and damaging the foaming gun.

Details to note when using styrofoam：

A, before applying glue and installing the door frame, it is best to spray some water on the wall, so that the fixed line will be faster and the expansion force will be smaller. , and the stability is good.

B. 一Must be fixed.

C, apply glue from bottom to top , playing left to right. Because foam glue has a certain after-effect, when applying glue, the muzzle of the gun should be pointed toward one side of the wall, not the door frame一While applying glue, you only need to fill the gap 50% full. The glue will slowly fill the gap automatically, which not only saves glue, but also This reduces the expansion force and ensures that the glue deep in the gap can fully absorb moisture. It is best to apply glue at a constant speed to ensure that the door will not be damaged. Many customers reported that the swollen door was caused by improper use.