Will long-term storage of fluorinated round bottles affect their anti-permeability performance?

The basis of the anti-permeability performance of fluorinated round bottles
The reason why fluorinated round bottles have a certain anti-permeability ability is mainly due to their material properties and the presence of the fluorinated layer. Fluorination treatment usually forms a dense and uniform fluoropolymer film on the surface of the bottle, which can effectively reduce the permeability of gases and liquids and improve the sealing and chemical stability of the bottle. Therefore, the anti-permeability performance depends to a large extent on the integrity of the fluorinated layer and the stability of the material itself.

Physical changes that may be caused by long-term storage
During long-term storage, fluorinated round bottles may be affected by external factors such as temperature fluctuations, humidity changes, and mechanical stress. High temperature or repeated hot and cold changes will cause microstructural changes in the plastic substrate, such as relaxation or rearrangement of molecular chains, which may affect the adhesion and continuity of the fluorinated layer. At the same time, excessive humidity in the storage environment may also penetrate into the surface of the bottle, causing local softening or corrosion. The above changes will cause fine cracks or shedding of the anti-permeability layer, reducing its anti-permeability effect.

Effect of chemical environment on anti-permeability performance
If there are volatile organic compounds, acidic and alkaline gases or other corrosive substances in the storage environment, long-term contact may cause chemical erosion to the fluoride layer. Although the fluoride layer has a certain chemical resistance, it is not completely inert. Continuous exposure to certain strong corrosive environments may gradually destroy the fluoride layer, resulting in a decrease in anti-permeability performance. In addition, if there are residual pollutants on the surface of the bottle during storage, it will also aggravate the occurrence of chemical reactions and shorten the effective period of the anti-permeability layer.

Mechanical damage and anti-permeability performance
If the fluorinated round bottle is scratched, collided or indented during storage and transportation, it may cause partial detachment of the fluorinated layer or damage to the substrate. Local damage will form a permeation channel, making it easy for gas and liquid to pass through the bottle, thereby affecting the overall anti-permeability ability. Long-term stacking or improper placement will also cause deformation of the bottle and increase the risk of microcracks. Therefore, mechanical damage is one of the common reasons for the decrease in anti-permeability performance.

Storage conditions for anti-permeability performance maintenance
In order to slow down the deterioration of the anti-permeability performance of fluorinated round bottles, storage conditions must be strictly controlled. It is recommended that the storage environment be kept dry, light-proof, well-ventilated, and avoid extreme temperature and humidity fluctuations. The storage area should avoid contact with corrosive gases and chemicals, and the bottle surface should be kept clean and pollution-free. Reasonable stacking to avoid overload compression and mechanical shock can effectively reduce the impact of physical damage. Standardized storage management helps to maintain the integrity and stable performance of the fluorinated layer.

Experimental observation of the relationship between storage time and performance
Related experimental studies have shown that the anti-permeability performance of fluorinated round bottles may decay to a certain extent with the extension of storage time. Specifically, it is manifested as a slight increase in gas permeability and liquid permeability, especially in high temperature and high humidity environments. However, under reasonable storage conditions, the performance changes are small in the short term (several months to one year) and can still meet the requirements of conventional use. When stored for a long time (more than several years), the performance degradation trend is more obvious, and regular testing and evaluation are required.

Importance of regular testing
In order to ensure that the fluorinated round bottles have good anti-permeability before use, it is recommended to conduct regular testing during long-term storage. The test items usually include appearance inspection, fluorinated layer integrity test, gas and liquid permeability test, etc. Through scientific testing methods, changes in anti-permeability performance can be discovered in time to determine whether the bottle is suitable for continued use, avoiding leakage or contamination of contents due to performance degradation.

Maintenance and regeneration measures
When it is found that the anti-permeability performance of the fluorinated round bottle has declined, maintenance and repair measures can be considered. For example, the function of the surface fluorinated layer can be restored through professional cleaning, re-fluorination and other processes. For some severely damaged bottles, they should be stopped from use to avoid safety hazards. Overall, reasonable maintenance management and technical support can help extend the service life of the fluorinated round bottle and maintain its anti-permeability performance.