How to purchase correct silicone sealant to different construction substrates

30. How to do compatibility test?

Answer: Strictly speaking, the compatibility test between the adhesive and the building base material should be carried out in the building material testing department recognized by the state. However, due to periodic reasons, the period of the structure obtained from the inspection in these departments Longer and higher cost. If there is such a necessary project, of course, you must do an inspection report from a competent national authority testing agency to determine whether to use a certain building material product, and a general project can provide the substrate to the glass sealant manufacturer for compatibility testing ( Competent manufacturers generally have testing equipment). Test results can be obtained in about 45 days for structural adhesives, and 35 days for neutral and acidic adhesives. The easiest and quickest way is that the user can try the glass sealant on a small amount of substrates. After it is fully cured, observe the surface effect and test its peel strength by hand to easily determine whether the adhesion and tensile strength of the glass sealant product are consistent.

31. Is it necessary to check the manufacturer's production license to purchase structural adhesive? Is the structural adhesive that is not a nationally recognized structural adhesive manufacturer absolutely not allowed to buy?

Answer: In the past, the production and sales of silicone structural adhesives implemented a license system because silicone structural adhesives are generally used in curtain wall assembly. Building curtain walls of tens of meters or even hundreds of meters are used for glass curtain walls or stone curtain walls. The silicone structural adhesive plays the role of bonding and fixing, which shows the power of the structural adhesive. If structural rubber products that do not meet the national technical standards and quality regulations enter the market in large quantities, they will inevitably cause major harm and immeasurable losses to the country and people’s lives and property. It can be seen that the country has high requirements for structural adhesives and strict production management is very necessary. At present, the country has relaxed the restrictions on the production and sales of silicone structural adhesives. As long as the structural adhesive products have passed the test of a nationally recognized building product testing agency, they can be produced, sold and used.

32. Why are large aquariums easy to burst?

Answer: In foreign countries, aquariums with a height of 0.6m-1m are called large-scale aquariums. In our country, those with a height of 0.8m or more, and some 1.2m, 1.5m or even higher aquariums are called large-scale aquariums. The aquarium mainly relies on aquarium sealant for structural bonding, so the performance of the aquarium sealant is required to be particularly high. It requires not only good peel strength, but also good flexibility, which is the most common type of glass sealant. defect. Because most glass sealant follow the principle of high strength and poor flexibility, or good flexibility but low strength. Therefore, ordinary glass glue hits the large aquarium easily to cause the phenomenon of tank explosion.