Take you through the story of sealant

In theory, the use of sealing function of the adhesive is sealant, from the "sealant" three words can be seen that it should take into account the two main uses, "sealing" the main use and the main use of "glue". The main use of "sealing" indicates that the use of the environment is often there is a gap, must be used to fill the gap with sealant and then have the effect of blocking the environment. The main use of "glue" indicates that the use of the environment is likely to have external force, sealant must have mechanical force and clearance surrounding raw materials fusion more closely.

But everyone understands the sealant everyday, usually only refers to a single component of moisture curing elastic sealant. According to different key components, the one-component moisture curing sealant of Shengqun new material can be divided into three types: polyurethane sealant, modified silane polyether adhesive (MS) and silicone adhesive. These three kinds of sealant have their own advantages.

Single component moisture curing sealant under the condition of curing will cause byproducts, polyurethane material sealant byproduct is carbon dioxide, modified silane polyether glue (MS) byproduct is alcohol, these kinds of sealant byproducts are more safe.

Silicone glue can be divided into many different types according to the differences in its byproducts. The deacidified byproduct is acetic acid, which will corrode many materials such as metal, concrete, lacquer and contain unpleasant and pungent acid taste. Deketoxime type, byproducts will also etched copper and other raw materials; In addition, there are dealcoholization type, deamidation type, dehydroxylamine type, acetone type. Therefore, when using silicone adhesive, we must ensure that the byproduct is not harmful to the bonding material and its surrounding environment.

Sealant is the most widely used in building construction. Silicone adhesive is generally applied around laminated glass, but at the same time laminated glass must be fixed with other mechanical equipment. Modified silane polyether adhesive (MS) is usually used in exterior paneling, solid wood wallboard, construction column, aluminum profile around, wall joint and other parts, because modified silane polyether adhesive (MS) has high impact toughness, at the same time taking into account excellent aging resistance, suitable for outdoor. The application of polyurethane sealant in interior decoration will be more, because it can be used to plug a variety of places, but also can bear the weight to assemble mirror glass, cabinet table, etc., at the same time, its byproduct is carbon dioxide, which is not easy to etch indoor soft surface, nor will there be pungent smell.

Most of the new material polyurethane sealant and modified silane polyethers (MS) can meet the requirements of LEED-NC "Green Building Review Standards for New Buildings or Major Retrofit Projects, Version 2.2" of the United States Green Building Council (USGBC), and the content of volatile organic compounds is lower than their respective category limits. All the sealants of Shengqun new materials meet the requirements of GB33372 "Adhesive Volatile Organic Compound Limit" the most stringent industry.