Polysulfide sealant for insulating glass sealing, metal, joints, concrete wall underground engineering (such as tunnel, cave), reservoirs, reservoirs and other structures of waterproof sealing, and road repair, restore the telescopic runway expansion joint sealing, sealing the crack of building complex.
Specific properties and applications of two-component polysulfide sealant
A two-component polysulfide sealant mainly used in construction, municipal, subway, tunnel, airport runway, highway, bridge expansion project of seam, settlement joints deformation crack sealing seal, two-component polysulfide sealant is suitable for water, swimming pool, reservoir, dam, power plants, sewage treatment works and for drainage system engineering in all kinds of expansion joint leakage sealing seal.
Below we detail the c h a racteristics of two-component polysulfide sealant products:
1. First of all, environmental protection non-toxic: Although liquid polysulfide sealant a little sulfur smell odor, but gradually solidified by the adsorption of filler. The polysulfide sealant produced by our company was tested by the Institute of environmental and sanitary engineering of Chinese Academy of preventive medicine, L, D50, 20g / kg. According to the national toxicity classification standard, it belongs to non-toxic grade. Therefore, the two-component polysulfide sealant can be used for water storage, swimming pools, water works and other waterproof projects.
2. Good air tightness: two component polysulfide sealant not only has good elasticity, but also its tightness in elastic sealant is also good. At present, after the hot melt butyl rubber adhesive in a variety of known. Can the good sealing performance of the construction project.
3. Cohesiveness: as sealant, the most important thing is to have excellent adhesion. This polysulfide sealant is applied to the vertical seam or top seam of the building,
The phenomenon of sealant flowing from the construction seam can not occur. Polysulfide sealant has a good bond to cement, steel, glass, wood, natural stone, etc.. The general construction and water conservancy project should use the low modulus and high elongation of polysulfide sealant, the bond strength is more than 0.2Mpa, elongation is greater than or equal to 300％.
4, water resistance: polysulfide sealant on the sea water, tap water, distilled water is stable, compared to the sea water (salt) of the weight change is minimal.
5, acid and alkali performance: polysulfide sealant is not strong enough acid and alkali. But it is stable for dilute inorganic acids, alkalis and various salts.
6, heat aging performance: polysulfide sealant thermal aging performance is very good, can long-term in a 40 120 degrees Celsius conditions work.
7, good radiation resistance: polysulfide sealant r_ ray performance is very good.
Water expansion type water sealing ring (slice) is aimed at crossing the structure of construction joints, cracks, reinforcement, pipes and other iron parts are more vulnerable to corrosion. The structural strength is reduced, which directly threatens the building safety, reduces the service life, or influences the equipment and facilities can not be used properly.
Application of water expansion water stop ring in waterproof of pile foundation
Do waterproofing in the basement when the pile head is the weak link of the waterproof, water expandable sealing ring is a very good solution to this point, seal ring in reinforced pile head set down, into a sealing ring size specifications are 16, 18, 20, 22, 25, 28 mm etc., can well prevent water flowing along the pile head and bottom slab cracks, so as to improve the quality of basement waterproof, easy to use, is a new waterproof material is good.