Xinyi single-component polyurethane construction sealant national standard highway bridge special caulking seal

厂家：

衡水德祥

规格：

600ml

型号：

单组份

Xinyi single-component polyurethane construction sealant, national standard highway bridge special caulking seal Xinyi single-component polyurethane construction sealant national standard highway bridge special caulking seal Xinyi single-component polyurethane construction sealant national standard highway bridge special With caulking seal, Xinyi single-component polyurethane construction sealant, national standard highway bridge, specially equipped with caulking seal, Xinyi single-component polyurethane construction sealant, national standard highway bridge, specially equipped with caulking seal The glue sealant is packaged in the shape of a ham. One-component polyurethane building sealant sealant is easy to use and ready to use. It has a wide range of uses and is essential for caulking. One-component polyurethane building sealant sealant is a black paste with good toughness, high bonding strength, easy extrusion and excellent sealing performance. The following features are also a major factor in its sales: weather resistance, aging resistance, strength resistance and humidity resistance. Before making a prepayment, please be sure to communicate with customer service about the specifications, color, packaging, usage and other attributes of the required product to avoid unnecessary misunderstandings.
The principle description of one-component polyurethane sealant mainly includes the following three points:
Adjustment of surface drying time and curing speed of one-component polyurethane sealant, changing the feeding ratio of prepolymer synthesis/appropriate Increase the prepolymer content by using a composite catalyst or appropriately increase the amount of catalyst.
. Adjustment of the amount of single-component polyurethane sealant. The modulus of building sealant is generally not too high. In addition to the adhesive force being large enough, the elongation at break is generally greater than the % modulus. It is appropriate. Sealants with different modulus can be produced by appropriately adjusting the polyol structure, molecular weight, purity, prepolymer dosage, prepolymer content, plasticizer, etc. type and dosage.
One-component polyurethane sealant has balanced construction properties. In actual use, it is required that the facade construction does not flow. This requires the addition of white carbon black, organic bentonite, fibrous talcum powder, surface-treated calcium carbonate and carbon black, etc. Make one-component polyurethane sealant thixotropic.