What are the characteristics of polysulfide sealant?

Roofing engineering is a very important part of the construction project. When it comes to roofing, everyone immediately thinks of waterproofing membranes, insulation layers, protective layers, gutters, etc., as well as the functions of roofing such as insulation, drainage, and anti-leakage. ; The material we are going to introduce today is closely related to roof drainage and anti-leakage. It is a new type of roof fine stone concrete protective layer grating joint filling material - two-component polysulfide sealant. In the past, the grouting material used on our roofs was usually asphalt grease. However, when the temperature is high in summer, this material melts and becomes soft and easily penetrates or volatilizes. In winter, when the temperature is low, it agglomerates and hardens, which can easily cause large problems on the roof. Leakage risk. The two-component polysulfide sealant is less affected by temperature, is heat-resistant and aging-resistant, and bonds well with the concrete surface. It is an excellent elastic sealing material.

1. Two-component polysulfide sealant uses liquid polysulfide rubber as the main agent, adding reinforcing agents, tougheners, tackifiers, thixotropic agents and other additives to form a base paste; it is made of metal oxides, etc. Configured as vulcanized rubber, the two components can be solidified into elastic sealing materials after mixing;

2. It has excellent resistance to fuel, hydraulic oil, water and various chemicals, as well as heat resistance and atmospheric aging resistance.

3. Non-sagging, high elongation, low modulus polysulfide building sealant becomes a rubber-like high elastomer after complete curing. Mixing ratio: main agent (A): curing agent (B)=100:10 (parts by mass, under standard conditions), changes with seasons and regional temperatures. The amount of curing agent used can be used to adjust the pot life. The range of component B is between 8 and 12.

What are the characteristics of polysulfide sealant?

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