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  • 2EthylHexanoicAcid Impact on Silicone Seals

2EthylHexanoicAcid Impact on Silicone Seals

Discussion on the influence of 2-ethylhexanoic acid on silicone sealant
Recently, various chemical substances have been widely used in industry. Among them, 2-ethylhexanoic acid, its properties and characteristics, can not be ignored in the influence of silicone sealant.

Silicone sealant is often used in construction and machinery industries. Because of its excellent adhesion, weather resistance and airtightness, it can ensure the stability, leakage-proof and protection of the object. However, when 2-ethylhexanoic acid encounters it, its shape is different.

2-ethylhexanoic acid, or the chemical structure of silicone sealant. This acid contains an active carboxyl group, which may react chemically with the silicon-oxygen bond or organic group in the silicone sealant. If the carboxyl group meets the silicon-oxygen bond, or the silicon-oxygen bond is broken, the molecular chain of the sealant is short, and the degree of polymerization is reduced. The change of the molecular chain must lead to the rational change of the sealant.

Looking at its physical properties, the first is viscosity. Due to the short molecular chain, the viscosity of the sealant may decrease. When sizing, or falling, it is difficult to ensure uniform thickness. On complex surfaces, it is especially difficult to form a regular rubber layer. The second is mechanical. The molecular chain is weak, and the tensile strength and tear strength of the sealant are reduced. When subjected to external force, it is easy to break, crack, and bear the original stress, which may cause the seal to fail at the sealing of building structures and mechanical connections, and cause water vapor and gas to enter, damaging objects.

Furthermore, 2-ethylhexanoic acid may harm the weather resistance of silicone sealants. Weatherproof, sealants are exposed to nature for a long time and resist temperature change, light, and wind and rain. 2-ethylhexanoic acid is stored in the interior, or is catalyzed by light and heat to cause oxidation and degradation of sealants. Over time, sealants may yellowen and brittle, lose their elasticity and stickiness, and gradually lose their sealing effect.

In summary, 2-ethylhexanoic acid has a deep impact on silicone sealants. Industrial users must carefully observe its distribution and storage to avoid its harm and preserve the advantages of silicone sealants, in order to ensure the stability of the industry and the long-term effect of the product.