1、 Look at the appearance: there are big secrets hidden in the details
Get the sealant, don't rush to use it, carefully observe the packaging and gel state. High quality product packaging with clear printing, complete brand, model, production date and other information, and tightly sealed bottle mouth without damage. After extruding the colloid, the truly good colloid is delicate and uniform, without particles or bubbles, and has a pure color. If the colloid is cloudy, clumped, or has a dark color, then be careful, it is likely that the raw materials are impure or the production process is not up to standard.
2、 Smell: A pungent odor is a 'danger signal'
Open the sealant and gently smell it close. Qualified silicone sealant may have a slight odor before curing, but it is definitely not a pungent or uncomfortable smell. If you smell a strong sour, foul odor, or a pungent smell similar to paint thinner, it indicates that a large amount of inferior solvents or harmful additives may have been added to the adhesive. This type of adhesive not only has a poor user experience, but long-term exposure may also pose a health hazard. It should be discarded decisively!
3、 Curing test: dual verification of time and effect
Apply a small amount of colloid onto a clean glass or metal surface and observe the curing process. Under normal circumstances, neutral silicone sealant will initially cure within 24 hours, forming an elastic gel; The curing speed of acidic adhesive is slightly faster, and it can dry out in 1-2 hours. If the product does not cure after a few days of application, or if it becomes hard like a stone or soft like rubber putty after curing, it indicates that there is a quality problem with the product. The surface of the solidified colloid should be flat and smooth, without cracks or bubbles. It should have good elasticity and rebound when pressed by hand, and not easily break when pulled.
4、 Experiment: Simple operation as shown in the real chapter
The viscosity of sealant directly determines whether it can "stick to its post". A simple bonding test can be done: find two clean materials (such as glass or ceramic tiles), evenly apply the sealant on the surface, compact and stick them together, and pull them hard after they are completely cured. High quality silicone sealant can tightly bond with materials, causing internal breakage of the gel when pulled, rather than detachment from the surface of the material; If it separates from the material with a gentle pull, it indicates that the adhesive strength of this adhesive is not good. In practical scenarios, it is easy to encounter problems such as leakage and mold growth.
5、 Verification: Authoritative endorsement brings peace of mind
When purchasing, be sure to check if the product has any relevant certification marks. Common authoritative certifications include China Green Ten Ring Certification (indicating that the product meets environmental requirements), ISO certification, etc. These certified products have undergone strict testing in terms of quality, environmental friendliness, and are more trustworthy. In addition, you can also log in to the brand's official website or call the official customer service phone number to check the authenticity and quality inspection report of the product, providing double protection and making purchases more reassuring.
Conclusion
By mastering these techniques for identifying the quality of silicone sealant, you can easily choose a reliable "protective guard" for your home next time you make a purchase. If you have any questions during the use of sealant, please feel free to contact us.
Company website: www.gfkjgs.com