Styrofoam is a kind of special polyurethane product which is filled with polyurethane prepolymer, foaming agent, catalyst and other components in a pressure-resistant aerosol can. When the material is sprayed from the aerosol can, the foamed polyurethane material will rapidly expand and react with air or the moisture in the contacted matrix to form a foam. The cured OCF foam has various effects such as caulking, bonding, sealing, heat insulation, and sound absorption. Next Xiaobian introduced to everyone the use of styrofoam and styrofoam features.
How to use styrofoam
1. Take a polyurethane foam gun and clean it with polyurethane cleaning agent to ensure smooth flow;
2, then take a bottle of foaming agent, hand tightly hold the middle of the can body, along the transverse direction of the can body and shaken at least 20 times, must ensure that the prepolymer in the tank is fully mixed;
3, remove the protective cover of the valve on the foaming agent thread ring, remove the cleaning agent on the foam gun, follow the thread to the foaming agent cans fitted to the interface of the foam gun; 4 clench foam gun handle Make sure the tank is on top.
4. Clench the handle of the foam gun to ensure that the material tank is placed above, and the foam gun is under the material tank, open the flow regulating valve at the rear of the foam gun;
5. The tip of the gun should be at the bottom or inside of the part to be filled, gently pull the trigger to start the construction. It can be adjusted to the appropriate flow through the flow adjustment valve behind the foam gun.
6. After a tank is sprayed, if it is still to be filled, the empty tank can be immediately removed, and the foaming agent can be reinstalled according to the method of the third point and the construction can be continued.
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 so as to prevent the residual material from solidifying, clogging and destroying the foaming gun.
Styrofoam Features
1. Chemical stability, long service life, no pollution to the surrounding environment; self-extinguishing from the open flame, and only charring without dripping when burned, the size and shape of the carbonized layer is basically unchanged, can effectively block the entry of air and prevent the fire. Spread, good fire safety performance.
2. Super self-adhesive performance (without any intermediate adhesive material), solid bonding with roof and exterior walls, good wind resistance and resistance to wind pressure; overall spraying construction, eliminating “hot festival†and “cold bridge†completely Flexible gradient technology can effectively prevent cracking of the waterproof layer; mechanized operation, automatic batching, uniform quality, fast construction, and short cycle.
3, excellent insulation performance, is the lowest thermal conductivity coefficient (≤ 0.024), the highest thermal resistance of all building materials in China, thermal conductivity is only half of the EPS foam polystyrene board.
4. Continuously dense skin of styrofoam and nearly 100% high-strength interconnected closed-cell pores have ideal water impermeability. The spray coating method is used to achieve continuous and seamless waterproof insulation layer, forming a seamless roof and integral external wall thermal insulation shell, with excellent waterproof and impermeability.
The quality of styrofoam
1, judging from the color after the plastic. High quality styrofoam is milky white (not white). The color is blackish gray or particularly yellow is not very good (indicating the use of cheap and inferior quality raw materials made of finished products, in order to achieve cost reduction purposes);
2. When the styrofoam goes out of the gel, the foam that is shot can not be too thin or too thick. If the foam is too dilute, it will collapse and the thick foam will dry out more easily;
3. After the styrofoam cures, cut the foam to see the cells, and the cells are even and fine for good foam. If the cells are large, it means that the density is not good. (Only the density is high, the styrofoam is waterproof. , sound insulation, elastic hardness and other performance guarantee);
4, to see the foam surface, good foam surface gutter-like, smooth but the gloss is not very bright; poor foam surface smooth, wrinkled;
5, look at the size of the foam, good bubble foam full round; poor foam foaming small, and showing a collapse (partially poor styrofoam in production to reduce costs and have an advantage in the market to adjust the formula The large amount of foaming, resulting in a certain cost, can only reduce the density, large foam, small elasticity, hardness is not high);
6, to see the adhesive, good foam adhesion, poor adhesion is poor (the bond strength is not good will cause the building surface and aluminum alloy or door sleeve bond is not solid or even unable to hang);
7, squeezing styrofoam blocks by hand, good dimensional stability of the glue. After being completely cured, it is elastic, too soft and too hard is not good, and partially poor rubber is inelastic, and can not be restored or restored after pressing with a finger after curing.
Editor's summary: How to use styrofoam and the characteristics of styrofoam are introduced here. I hope to be helpful to everyone. If you want to know more related information, you can pay attention to this website information.
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