One. Silicone structure sealant curing slow

  Silicone structural adhesive curing slow, according to years of technical service experience, most of the following three reasons:

  The curing speed is slow due to low ambient temperature and humidity.Solution: improve the use of the environment and maintenance environment temperature, such as the use of closed space to set the greenhouse, air conditioning heating methods to maintain the maintenance environment temperature at 10-40℃, humidity maintained at 50-90%;

  (2) The curing speed is slow caused by low ambient temperature and humidity.Solution: Confirm whether the proportion of component A and B is normal through the breaking time, and increase the proportion of component B appropriately within the range of the manufacturer's allowable adjustment proportion to speed up the curing speed.

  Silicone structural adhesive has expired or its own quality problems.Solution: check the production batch number of the glue, confirm whether the glue is within the shelf life, choose the silicone structural glue with guaranteed quality and brand.

  Two. Structural adhesive width is not enough: the actual width is less than the design width

  There are two main reasons for the insufficient bonding width of structural adhesive:

  ① The glue injection is not full.Solution: glue injection is continuous and uniform, and the nozzle can extend into the joint at least half of the depth.After the glue injection, it should be repaired.

  (2) the joint assembly size is small.Solution: assemble joints in strict accordance with the design size of plastic joints.

  Three. Structural colloids have bubbles or holes

  Structural adhesive colloid has bubbles and holes for two main reasons:

  ① The glue injection is not full.Solution: ibid.

  (2) When the glue machine is mixed with air, dense bubbles appear in the colloid.Solution: ensure that the glue machine is trouble-free, and exhaust the air before use after changing the barrel.

  The above problems are serious harm to the safe application of structural adhesive.During the construction process, it is necessary to ensure that the size of the structural adhesive meets the design requirements, and the adhesive is full with no bubbles and holes.Hope customers in the process of using glue, should avoid these problems, to ensure the safety of curtain wall.

  Silicone structural sealant is very important for the quality and safety application of hidden frame curtain wall."Good glue" is the premise to ensure quality and safety, "good glue" is an important process to realize the safe application of hidden frame curtain wall.

  Glue machine:

  Glue machine is specialized in the control of adhesives and other coatings and drip, coated on the surface of the product automation equipment.It is through compressed air to paint into the hose, and then through the program control, the paint in accordance with the preset path for drip or coating.

  Working principle: compressed air is fed into the glue bottle (syringe), and the glue is pressed into the feeding tube connected with the piston chamber. When the piston is in the upper stroke, the piston chamber is filled with glue. When the piston pushes the glue needle down, the glue is pressed out of the needle nozzle.The amount of glue dripped is determined by the distance of the piston, which can be manually adjusted or controlled in the software.