In modern industrial production, sealant is widely used in the assembly and protection of various products. With the wide application, the corrosion problem of PC (polycarbonate) screw column is gradually highlighted. This corrosion will not only affect the appearance of the product, but also seriously weaken the structural strength of the product and shorten its service life. How to effectively reduce the corrosion influence of sealant on PC screw column? This paper will explore this problem from multiple perspectives and propose practical solutions.
 
 
1. Understand the cause of the corrosion
In order to reduce the corrosion effect of sealant on PC screw column, it is necessary to understand the cause of this corrosion. The composition of sealant is complex and usually contains silicone, polyurethane and acrylic chemicals. When these chemicals come into contact with the PC material, chemical reactions may occur, leading to the decomposition or degradation of the PC material. Environmental factors such as temperature and humidity can also aggravate this corrosion.
1.1 Effect of the chemical composition
Different types of sealants have different chemical composition, so the influence on the PC screw column is also different. For example, some sealants contain acidic or alkaline substances that react with the PC material, causing tiny cracks on the surface, which can expand further under stress, eventually leading to the fracture or shedding of the screw column.
1.2 Influence of environmental factors
At high temperature and high humidity environment, the chemical reaction speed of the sealant will be greatly increased. This not only aggravates the corrosion of the PC screw column, but may also lead to the thermal degradation of the PC material itself. Therefore, in the design and selection of sealant, we must consider the use environment of the product, and choose the suitable sealant type and formula.
 
2. Solution- -Choose the suitable sealant
In order to effectively reduce the corrosion effect of sealant on PC screw column, selecting the suitable sealant is a crucial step.
 Ordinary sealant itself is highly corrosive to PC, the glue stress is too high, or the high content of volatile substances in the curing process, which will cause the stress extrusion or chemical corrosion of the screw column, resulting in fine cracks on the surface.
 Xiaobian for you to introduce a particularly suitable for the screw column near the use of sealant water. ENIENT EG0510 Series of modified siloxane sealant. It is very flexible and flexible after curing, which can disperse the stress around the screw column. It has extremely low volatile organic compounds during curing and contains no VOC and therefore does not lead to PC decomposition. It is neutral glue and does not have any corrosion on the PC surface.
 
3. Improved process design
In addition to choosing the appropriate sealant, improving the process design is also an important means to reduce the impact of the sealant on the PC screw column corrosion. Reasonable process design can not only reduce the direct contact between the sealant and the PC screw column, but also can effectively control the influence of environmental factors on corrosion.
3.1 Increase the isolation layer
Adding an isolation layer to the surface of the PC screw column can effectively prevent the chemical components in the sealant from making direct contact with the PC material. This isolation layer can be used with coating or film material, the specific selection should be based on the actual situation.
3.2 Control the amount of glue applied
Reasonable control of the amount of glue, avoid excessive sealant coating on the PC screw column, can reduce the incidence of corrosion. The control of glue amount should be determined according to the specific requirements of the product and the actual use.
3.3 Improve the glue coating process
Using advanced coating technology, such as automatic coating equipment and precision coating technology, can improve the uniformity and precision of coating, and reduce the corrosion problems caused by uneven coating.
 
4. Optimize the environmental conditions
In the process of production and use, optimizing environmental conditions is also one of the effective measures to reduce the corrosion of PC screw column. By controlling the ambient temperature, humidity and the quality of air.
4.1 Control of the temperature
During the production process, the strict temperature control can reduce the chemical reaction rate between the sealant and the PC material. Especially in high temperature operation, the exposure time under high temperature environment should be shortened as far as possible to avoid the thermal degradation of PC materials.
4.2 Control the humidity
Humidity is one of the important factors affecting the corrosion of sealant and PC material. Keeping the production environment dry, it can effectively reduce the occurrence of chemical reactions. In the process of storage and use of products, high humidity environment should be avoided as far as possible to prolong the service life of the product.
4.3 Air quality management
Some chemical components in the sealant will volatilize in the air, forming corrosive gases. By improving the air quality, such as adding ventilation equipment and air filtration devices, the impact of these corrosive gases on the PC screw bars can be reduced.
 
5. Strengthen material testing and certification
To ensure the compatibility of sealant and PC material, adequate material testing and certification shall be conducted before the selection of sealant. This should include not only chemical compatibility tests, but also environmental tolerance tests and long-term use tests.
5.1 Chemical compatibility test
Chemical compatibility testing can determine whether a chemical reaction occurs between the sealant and the PC material. By simulating tests in the actual use environment, we can screen sealant products that are harmless or less corrosive to PC material.
5.2 Environmental tolerability test
Environmental tolerance testing includes tests under high temperature, high humidity, ultraviolet light, and the purpose is to assess the stability and reliability of sealants under different environmental conditions. Through these tests, sealants suitable for use in specific environmental conditions can be selected.
5.3 Long-term use test
Long-term use testing is an important means to assess the impact of sealant on PC materials during long-term use. By simulating the long-term use environment, the potential corrosion problems can be found, and the formulation and use method of the sealant can be timely adjusted.
 
 Vi. Summary and outlook
Although the corrosion problem of sealant on PC screw column is complicated, its influence can be effectively reduced through scientific methods and reasonable measures. Understanding the cause of corrosion, choosing the right sealant is one of the most critical links, and strengthening the material testing and certification is an important step to ensure the quality of the finished product. How to reduce the impact of sealant on PC screw column corrosion, I believe that you have the answer after reading this article.
 
 
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Reference article source: ENIENT® British Chemical shares technical data and case release