How does paste rubber moisture absorbent reduce bubbles in rubber products?
Publish Time: 2025-04-14
In the production process of rubber products, the bubble problem has always been a headache. Bubbles not only affect the appearance quality of rubber products, but may also reduce their physical properties and service life. In order to effectively reduce bubbles in rubber products, paste rubber moisture absorbent came into being and gradually became an indispensable part of the rubber industry.Causes of bubbles in rubber productsThe bubbles in rubber products mainly come from the moisture in the raw materials, the volatiles in the additives, and the air mixed in the production process. When these gases are not discharged in time during the rubber vulcanization process, bubbles will form inside the rubber products. The moisture in the raw materials is one of the main reasons for the generation of bubbles, especially when the rubber material is damp during storage and transportation, the moisture will penetrate into the rubber, resulting in a large number of bubbles during the vulcanization process.How paste rubber moisture absorbent worksPaste rubber moisture absorbent is a chemical substance specially used to absorb moisture in rubber. It usually exists in a paste form, which is easy to mix evenly with rubber materials. The main components of paste rubber moisture absorbent are usually substances with strong water absorption, such as calcium oxide, silica gel, etc. These substances can react chemically or physically absorb with the water in the rubber, thereby removing the water from the rubber.During the rubber mixing process, paste rubber moisture absorbent is added to the rubber material in an internal mixer or an open mixer for mixing. The moisture absorbent will quickly combine with the water in the rubber to form a stable compound or adsorb on the surface of the moisture absorbent. In this way, in the subsequent vulcanization process, the water will no longer be converted into gas, which effectively reduces the generation of bubbles.Advantages of paste rubber moisture absorbentEfficient moisture absorption: paste rubber moisture absorbent has a strong moisture absorption capacity and can quickly absorb moisture from the rubber to ensure that the rubber material reaches an ideal dry state before vulcanization.Easy to mix: The paste form makes it easier for the moisture absorbent to mix evenly with the rubber material, avoiding the problem of bubbles caused by uneven local moisture absorption.Good stability: paste rubber moisture absorbent remains stable during storage and use, and is not easy to decompose or fail, ensuring its long-term moisture absorption effect.Environmental protection and safety: Many paste rubber moisture absorbents are made of environmentally friendly materials, which are harmless to the human body and the environment, and meet the environmental protection requirements of the modern rubber industry.Application examples and effectsIn practical applications, paste rubber moisture absorbent is widely used in the production of various rubber products, such as tires, sealing strips, hoses, etc. Taking tire production as an example, adding an appropriate amount of paste rubber moisture absorbent in the rubber mixing stage can significantly reduce the number of bubbles generated during the tire vulcanization process. This not only improves the appearance quality of the tire, but also enhances its wear resistance and service life.In addition, paste rubber moisture absorbent can also be used in conjunction with other additives, such as vulcanizers, accelerators, etc., to jointly optimize the performance of rubber products. By reasonably adjusting the amount of moisture absorbent and the mixing process, the bubbles in rubber products can be minimized while maintaining their excellent physical properties.Rubber filler paste rubber moisture absorbent is an effective means to reduce bubbles in rubber products. Through its strong moisture absorption capacity and easy mixing characteristics, paste rubber moisture absorbent can significantly reduce the moisture content in rubber, thereby reducing the generation of bubbles during vulcanization. With the continuous development and innovation of the rubber industry, the application prospects of paste rubber moisture absorbent will be broader.
