Polyurethane foam is also commonly known as caulking. It is a special thermal insulation and waterproof material. It plays a very important role in construction projects. It is easy to use and has high construction efficiency. At present, the quality of caulking produced by polyurethane foam filling equipment on the market is uneven. Therefore, before construction, in order to ensure the sealing and waterproof quality of the building, the quality of the caulking must be carefully checked. The following summarizes several methods that can identify the quality of caulking produced by polyurethane foam filling equipment. I hope it will be helpful for everyone when choosing foam.
Appearance of foam caulking
1. Observe its color: Good quality caulking produced by filling is very bright and white when it is punched out. If the color is black, gray or yellow, it indicates that the quality is poor.
2. Observe its density: After the caulking is punched out of the can, it is air-dried and solidified, and then the foam is cut. The pores of good quality caulking are fine and uniform. If the pores are large, it indicates that the density is poor and the quality is poor.
3. Observe its foaming size: high-quality caulking foaming agent foam is usually round and full, low-quality foam, small foam or even shrunken.
4. Observe viscosity: high-quality caulking agent has good viscosity and sticks firmly. Low-quality ones have poor adhesion, are not firm or even easy to fall off.
5. Smell the odor: high-quality caulking agent has no obvious irritating odor, and inferior ones are usually accompanied by a pungent smell.
6. Look at the foam surface: good styrofoam caulking agent foam, the foam produced is not too thin or too thick, the surface is gully-shaped, and the surface of poor-quality caulking agent is generally wrinkled.