What is the difference between good and bad glass glue in the case of glass curtain wall falling off?

Glass curtain wall accident falling off, according to media reports: one is due to the government regulatory departments do not pay attention to, two is the glass curtain wall glass glue has reached the service life, resulting in glass aging after falling off, three is part of the cheaper glass glue quality standards do not meet the national standards, resulting in glass curtain wall falling off.... It can be seen that between the good and bad of glass, to prevent the occurrence of safety accidents has a very important significance to their own home safety, reduce the occurrence of door and window accidents, please choose a brand, quality guaranteed safe and reliable glass glue!

Good glue

Whether the glass glue product meets the national standards, you can see whether there is the inspection report of the relevant authority testing center.
Good bonding strength, adhesion, no shrinkage, no matter how long it will be elastic, smooth surface, shiny. True weatherproof glue doesn't harden, it doesn't shrink, it's elastic, and it stays elastic.
Take a piece of A4 paper and do the butterfly test. Flatten the paper. Put glass glue on it. Within a week or so, the air will absorb the water, the glue will dry, the glass glue will not shrink, the paper will not deform, and it will not change color. Dullness (maintains shine), immutability (nail compression elasticity) is proven to be good, safer to use, more comfortable, and will not crack.
If you want to use it once, use a non-shrinking glass glue.
Bad plastic

Poor quality glass glue deviates from the national standards should be achieved, so the price is very low, buy home will shrink aging hardening, and the surface lacks luster, dark color, yellow. If the glass glue open fission hard, is the problem of glue; The strength of glass glue is too strong to give any elasticity when pressed down with nails.
Poor quality glass glue will shrink and harden. After a year or two, these ingredients will slowly wear off and become harder and harder, completely inelastic, which can easily lead to aging. The pieces fell off.
Poor quality glass glue placed on the roof, exposed to sun and rain, will leak after a few days. It will be at room temperature - probably no problem, but during periods of high temperature, it will be a safety hazard. The flexible packaging structural glue of about 8 yuan on the market is far from the national structural plastic standard. Once used in the structure assembly, it seems to be loaded with a time bomb. If the glass is broken, the consequences may be catastrophic.
In addition, a good glass adhesive also needs to have qualified, skilled construction team according to the procedure operation, in order to achieve better results.