There are all kinds of decoration materials on the market, and many people may not be familiar with styrofoam , do not know what it is used for, and do not know whether it is environmentally friendly and healthy. Xiao Bian today to introduce some knowledge about the styrofoam, styrofoam do not know can do a simple study. 1, what is styrofoam As the name implies, it is a kind of glue with foaming characteristics and adhesive properties. It is mainly used for filling, sealing and bonding at the seams and holes in windows and doors of house buildings. It is a polyurethane elastic sealing foam material that relies on moisture curing. In fact, this glue is filled with polyurethane prepolymers, foaming agents, catalysts, cross-linking agents, etc. into high-pressure iron cans and filled with propane and other gases. At present, it is divided into two types, gun-type and tube-type. The use of the two is different. The gun-type is required to use a special polyurethane foam gun to use, and the tube type is required to be equipped with a disposable hose. 2, foaming principle 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. Cured foam after curing has a variety of effects such as caulking, bonding, sealing, heat insulation, sound absorption, etc. It is an environmentally friendly, energy-saving and easy-to-use building material that can be used for sealing plugging, filling in gaps, and fixing bonding. , Insulation and sound insulation, especially for sealing or watertight sealing between steel or aluminum alloy doors and windows and walls. 3, styrofoam toxic Most of the adhesives used today are polyurethanes, of which paint is the main component. Therefore, it is necessary to pay attention to the ventilation and ventilation when using them. It is recommended to buy products produced by regular manufacturers; after the renovation is completed, more windows will be used for ventilation. However, this glue is an environmentally friendly product and is one of the new building materials recommended by the country. In fact, there will be some odor when playing this kind of glue. The size of odor depends on which product you choose. It can also reflect the quality of the product. In addition, the cured glue can be in contact with food. However, since this glue is still a chemical, people should pay more attention when using it. Xiao Bian concludes: The above is an introduction to what is styrofoam and its principle and styrofoam toxic. Today, its application in our daily life is still relatively extensive, and many places are inseparable from this glue, so we need more good choices. It is recommended that everyone choose the best time to choose a quality guaranteed brand, must not choose a small brand of styrofoam in order to get cheap, so as not to let it affect our physical health, which is what we do not expect. Automobile Bearing ,Bearings For Cars,Bearings Auto,Bearing Automobile NINGBO DEMY (D&M) BEARINGS CO.,LTD , https://www.demybmtbearing.com
