The influence of sealing structure on the vulcanization effect is mainly reflected in the following aspects:
First, the integrity of the sealing structure
The integrity of the sealing structure is one of the key factors affecting the vulcanization effect. If there are defects in the sealing structure, such as cracks, holes or loose connections, key components such as vulcanizing agents and accelerators may leak during the vulcanization process, resulting in incomplete vulcanization reactions and subsequently affecting the performance of the vulcanized products. For instance, during the vulcanization process of rubber seals, if the sealing performance of the mold is poor, the vulcanizing agent may escape from the gaps, resulting in insufficient vulcanization in certain areas and causing leakage or insufficient strength of the seals during use.
Second, the geometric shape of the sealing structure
The geometric shape of the sealing structure also has a significant influence on the vulcanization effect. Sealing structures of different shapes are subject to different pressure distributions, temperature gradients and penetration degrees of vulcanizing agents during the vulcanization process, thereby affecting the uniformity and depth of the vulcanization reaction. For instance, when complex-shaped seals are vulcanized, there may be differences in the degree of vulcanization between the inside and outside, resulting in inconsistent performance. In addition, the thickness and width of the sealing structure also affect the vulcanization speed. Thicker structures may require a longer vulcanization time to ensure full vulcanization inside.
Third, material compatibility of the sealing structure
The compatibility between the materials used in the sealing structure and the vulcanization system is crucial to the vulcanization effect. If the material has an adverse reaction with the vulcanizing agent or accelerator, it may lead to vulcanization failure or the generation of adverse by-products. For instance, some plastic or metal seals may undergo chemical reactions with vulcanizing agents during the vulcanization process, leading to damage to the sealing structure or a decline in the performance of the vulcanization products. Therefore, when choosing sealing structural materials, their compatibility with the vulcanization system should be fully considered.
Fourth, the thermal conductivity performance of the sealing structure
During the vulcanization process, temperature is an important factor affecting the vulcanization reaction rate and the performance of the product. The thermal conductivity of the sealing structure determines the distribution and transfer efficiency of heat during the vulcanization process. If the thermal conductivity of the sealing structure is poor, it may cause local temperatures to be too high or too low, affecting the uniformity of the vulcanization reaction and the performance of the product. For instance, during the high-temperature vulcanization process, if the sealing structure fails to dissipate heat effectively, it may lead to local overheating, causing degradation or performance degradation of the vulcanization products.
Fifth, the stress distribution of the sealing structure
During the vulcanization process, the sealing structure may be subjected to stress from various factors such as vulcanization pressure, mold constraints and material shrinkage. Uneven stress distribution may lead to deformation or cracking of the sealing structure, thereby affecting the vulcanization effect. For instance, when vulcanizing rubber seals, if the mold design is unreasonable or the vulcanization pressure is too high, it may cause residual stress to occur in the seals during the vulcanization process, affecting their sealing performance and durability during use.