When the weather turns cold every year, especially in the north, you must also feelvery coldBar? In factpolyurethane foamWe feel cold just like us, even in winterSomeQuestion, so what are the main problems we often see? Here, authorMade something for everyoneOrganization , remind everyone that this is not a quality problem of the styrofoam, so don’t worry, it is Environmentproblem.
1. Slow curing speed ,bubblesLow density
PolyurethaneFoam glueThe application temperature is5-35℃, 蕞Best application The temperature is 21-25℃. In severe cold and low temperature environments, orDry and low humidity environment,The foam will solidify slowly and the cell density will be low.
2. Surface powdering Crisp
PolyurethaneFoam glue is a type of polyurethane product. The surface of polyurethane products will powder and become brittle at low temperatures. It is a common feature of polyurethane products, not a product quality issue. With the passage of storage time, this powdering phenomenon will gradually disappear until it returns to its normal state without affecting its use.
The speed of state transition time is related to the actual temperature of the use environment. The higher the temperature, the shorter the time, the lower the temperature, the longer the time. Generally curing can return to normal state within 48-72 hours. During this period, do not press or cut the surface of the foam to avoid damaging thecellsstructure, resulting inPolyurethane foamCannot return to normal state.
3. Polyurethane foamHollow Phenomenon
Styrofoam itself has good thermal insulation and waterproof properties. After the foam rubber is cured, water vapor cannot easily enter the interior, resulting in insufficient water vapor in the internal foam and the curing reaction cannot proceed, resulting in a hollow interior. At the same time, the winter climate itself is relatively Drying, exacerbating the problem.
4, the glue is not smooth
The low temperature in winter will cause Polyurethane foamThe viscosity of the material increases, and the propelling gas in the bottle is not easy to vaporize. If the staff does not use it during use FullWhen the foam is shaken, it is easy to see that the foam is thin at the front and thin at the back The problem is that the foam glue gun is not smooth or even cannot be used.
These four questions are winterFoam glue ‘sCommonproblems. Don’t worry if you encounter such a situation in winter. There is actually a solution. Let’s introduce it next time. If you are interested, please follow us.
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