Structural uses and applications of glue

Time：2013-08-30 15:36:52 Hits：1388

Structural glue is high intensity, ie compressive strength> 65MPa, Steel - Steel is pulling the adhesive strength> 30MPa, shear strength> 18MPa, can withstand greater loads and aging resistance, fatigue resistance, corrosion resistance, the expected life of the stable performance, suitable to withstand strong structure bonding adhesive.
 

Therefore, the structure of glue can be widely used in metal, ceramic, plastic, rubber, wood material or the same kind of bonding between different kinds of materials, but also can partially replace the welding, riveting, bolting, and other traditional connection type, with surface stress distribution , on the part no heat impact and deformation. Among them, the structural glue is mainly used in engineering components reinforcement, anchoring, bonding, repair, etc.; such as bonding steel, carbon fiber stick, anchorage, crack reinforcement, sealing, patching holes, spike paste, surface protection, concrete stick access and so on.

 

Many types of glue structure, although different types of structural adhesive, the use of different methods, but roughly the same. High-strength structural adhesive with BD811 example to illustrate the use of the glue structure:

 

1, surface treatment: treat repair parts to be bonded or roughened, and then cleaning agent;

2, the preparation: mass ratio A: B = 4:1 or 3:1 volume ratio of the A, B groups were mixed and used within specified operating time.

3, coating: tuned to the glue evenly coated on the surface of the object;

4, curing: 20 ~ 25 ℃ cured for 24 hours or 20 ~ 25 ℃ cured for 2 hours +80 ℃ 2 hours, to use, and should be used if the heating temperature is low or the curing time extended to promote cure.

 

Structural glue production, the need for reactor, grinding machine, universal testing machine, aging chamber, Rally and other advanced production and testing equipment, investment is relatively large. To this end, the domestic production structure relatively few manufacturers of glue, glue structure used mostly abroad.