Polyurethane sealant Technical parameters Polyurethane sealant Detailed introduction: Polyurethane sealant has the following characteristics: excellent wear resistance; low temperature flexibility; wide range of performance adjustable; mechanical strength; good adhesion; good elasticity, with excellent recovery Sex, can be suitable for dynamic joints; good weather resistance, service life up to 15 to 20 years; excellent oil resistance; resistance to biological aging; affordable.
Polyurethane sealants also have some drawbacks. Such as: can not be long-term heat; light-colored formulations susceptible to ultraviolet light aging; single-component adhesive storage stability and external impact of the package, usually slow curing; high temperature thermal environment may generate bubbles and cracks; many occasions need bottom Tu. At the same time, the water resistance of polyurethane sealant is also poor, especially the alkali-resistant water is not good.
Polyurethane sealant classification Polyurethane sealant is generally divided into two types of single-component and two-component, single-component moisture curing type, two-component reaction curing type. Single-component sealant is convenient to construct, but cures slowly. The two-component sealant has fast curing and good properties. However, it needs to be formulated according to whether it has fluidity, and polyurethane sealant can be divided into non-sagging type. )) and self-leveling. Non-hanging type is used for vertical surface, inclined surface, ceiling and other occasions. Before the curing, it will not be offset, slide or flow due to the self-weight of the strip. The self-leveling type is specially used for horizontal applications. According to the nature after use, it can be divided into non-dry type, semi-dry type and full-cured elastomer type.
What is the technical parameter of polyurethane sealant
l Technical parameters: 
Model Polyurethane Sealant Dry Time: 15 - 60 min, Low Temperature Properties: -45°C No Break, Service Temperature: -45 - 90°C
Curing speed: 4 - 6mm/24h, solid content (%): ≥95, shear strength: ≥5.0Mpa,
Recommended construction temperature: 10 - 40°C, tensile strength: ≥6.0Mpa, density: 1.1 - 1.2 g/cm
Shore A hardness: 55 – 65, Appearance: black uniform paste, sag: 0mm What are the technical parameters of polyurethane sealant?
l Product Features ◇ One-component, moisture curing, no façade construction;
具有 Flexible, good initial viscosity, medium strength;
粘接 Good adhesion to various materials such as glass and aluminum plates;
良好 Good sealing performance;
拉 Short drawing when interrupting glue;
æ— No corrosion or penetrating pollution to the substrate;
低 Low volatile odor;
优良 Excellent anti-aging properties:
Hengshui Shenghong Rubber & Plastic Products Co., Ltd. specializes in the production of rubber sealing tapes, waterstop tapes, polyethylene closed-cell foam rubbers, and plastic blind ditch. It has rich production experience and technical strength, and it has a certain degree in the rubber production industry. Influence, our rubber products have been applied in many domestic key projects, and have been fully affirmed by users and praised by many experts for technical exchanges (V letter with number) QQ hotline
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