Can you apply polyurethane also to plastic surfaces?
There are types of plastics to which polyurethane foam can and cannot be applied. While polyurethane foam is compatible with polystyrene sheets (such as EPS, XPS), rigid polyurethane sheets, plastics such as polyester and rigid PVC, its compatibility with plastics such as PE, PP, silicone, and Teflon will not be satisfactory. For this reason, knowing the type of surface you will apply will play an active role in getting a better quality result.
I haven’t finished all of the polyurethane foam and put it away in my storage. When I wanted to apply it again after a few days, the foam which dried in the pipet made the can unusable. What can I do?
Spare pipette set enables you to use the can over and over again in such cases. If you do not have a spare pipet, you can use your foam again by cutting the tip of the pipet that contains hardened PU foam inside it.
Can I use aerosol polyurethane foams also for sound insulation?
The priority of polyurethane foams with a closed-cell structure is to provide thermal insulation. However, foams with an open-cell structure may also be preferred in terms of sound insulation.
Are polyurethane foams resistant to high temperatures?
The structures of polyurethane foams break down when they are exposed to temperatures of 90 °C and above for a long time. On the other hand, they endure temperatures of 130 °C and above for hours.
What should I use in projects that require a fire safety procedure?
Projects with fire safety procedures (for example, in the construction of buildings such as fire exits, hospitals, schools, etc.) make the use of foam and sealants with fire retardant properties obligatory.
Should I throw away the aerosol foam that I have consumed?
On the contrary to the practice in many EU countries, unfortunately, there is no institution in our country which collects consumed aerosol foam cans for recycling. Even if it is used until the end, 20-40 grams of polyurethane polymer and propellant mixture may remain in each can and this creates a risk in terms of environmental pollution. For this reason, we recommend you to keep the can waiting upside down for a while for its contents to completely empty before you throw it away.
Is it inconvenient to use PU foam, the life span of which is close to ending?
The polyurethane prepolymer in the aerosol can becomes noticeably thicker as the expiry date of the product closes. The most important result of this situation for the end-user will be the decrease in the amount of foam (outcome) obtained from a can.
What is the difference between adhesive PU foams from standard PU foams?
The most important feature expected from standard foams is gap filling. For this reason, the swelling of the foam is considered as high performance. However, adhesive foams are stronger, superiorly adhering to surfaces and less swelling in order not to push the surface to which it adheres over time.
What does foam with guns mean?
Foams with guns offer many advantages both economically and technically for masters who continuously use foams. The most important of these is that the amount of foam obtained from a can increases by up to 50%. Thus, the applicator can finish the application by using a much less number of can foams. Foams with guns swell are quite limited way compared to standard foams, and they are an ideal option with these properties particularly for door installation. Another important point required to emphasize is that foams with guns are lighter than foams with a pipette. Thus, their vertical surface stability is higher, particularly in wide gaps. Another important point required to be careful about while using gun foam is the usage of a quality application gun.
Is less-swelling PU foam better?
Not every time! For example, a master, who installs a door does not want the foam to swell much and stretch the door frame, on the other hand, a master, who will fill the gaps for general purposes, saves money in the application by choosing the foam that swells too much.
What is the benefit of painting over PU foams?
PU foam is not resistant to direct sunlight. In the course of time, it will discolor and its mechanical properties will weaken. Painting over the PU foam will weaken such negative effects.