What is the connection between foamed silicone tubing and its performance

Information sourced from:Internet Published on:2024-02-19

1、 Density: Foamed silicone tubing and any foam product are important properties. Currently, the mainstream density in the market is between 0.3 and 1.0, and the conventional non foaming density is stably controlled at 1.2, which is one of the connections. In addition, the density of foam products directly affects the final unit price of the product. The higher the foam density, the higher the unit price will also increase. Therefore, before considering the use of foam silicone tubing, it is necessary to hold it in place. The density should not be too high or too low. It is recommended to use foam silicone tubing for bicycles and fitness equipment, and choose products with a density between 0.5 and 0.7. Industrial silicone insulation tubing, high-temperature resistant foam silicone tubing, and sealing products use a density between 0.3 and 0.5. As mentioned earlier, the conventional silicone density of 1.2 will harden slightly, while the foam silicone will decompose the density of 1.2 into 0.3-1.0 through a special process to become a sponge like silicone product. Has the hardness also become softer?
From this, it can be seen that the higher the density of foam, the higher the hardness, and it is impossible to adjust the hardness under the premise of controlling the density. In other words, as the foam density increases, the hardness will also increase, and as the density decreases, the hardness will definitely decrease. Therefore, it can be concluded that the density of foamed silicone tubing is related to the final price, applicable environment, hardness, and belongs to the category of pulling one engine to move the whole body.


2、 Hardness: Firstly, the hardness unit used for foaming silicone tubing is different from that of conventional silicone tubing. The former uses Shore C, while the latter uses Shore A. These two can be converted to each other. After foaming silicone tubing, it will appear sponge like and the hardness will be relatively low, so Shore C is used. Secondly, the relationship between hardness and density is interrelated, with one hardness increasing and the other hardness also increasing. The positive and negative deviation of the hardness of foamed silicone gel is 1-3 ° larger than that of non foamed products. When produced, the hardness is difficult to control and mostly falls within the normal range of ± 5-6 °. The testing equipment also needs to be matched with a hardness tester for testing. Other testing instruments cannot be used in the silicone field. The foamed silicone rubber tube is circular and needs to be cut and placed on a flat surface for compression testing using scissors, or filled with a circular plug to provide sufficient support to withstand pressure from the hardness monitoring instrument to detect the hardness of the product.
Yongle Rubber has passed the ISO9001 system and specializes in customized production of platinum silicone hoses, peristaltic pump silicone hoses, food and medical molded silicone parts, and plastic sealing components. Taking "developing better products, providing better services, and creating a better image" as the competitive strategy, we continuously carry out transformation and management innovation to enhance the comprehensive competitiveness of the enterprise.
 
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