What's the difference between solid silicone and liquid silicone?

November 03, 2023

Liquid and solid processes are the most common processing methods in the silicone rubber products industry. The silicone products produced by these two processes are widely used and have many types. However, solid processing and liquid processes have different advantages and disadvantages, which also make it difficult for many consumers. How to choose, what are the differences and advantages and disadvantages?

Silicone products and other products are also divided into three, six, nine, etc., different product quality effects choose different processing methods, and the difference between liquid and solid is here, so when you customize silicone products, choose the solid processing method if it is acceptable , Then there is no need to choose a liquid process, because solid silica gel is cheaper than liquid silica gel in terms of cost. The same applies to molds, but there are also differences in quality.

In terms of appearance: the product quality difference lies in the appearance parting line. For appearance products, the solid-state molding process is to open the mold for discharging and then close the mold for compression and solidification, while for the liquid state, the mold is combined into the mold template and injected into When the mold is cured at high temperature, the parting lines of the products are naturally different. The basic industry standard parting line of molded silicone products is about 0.1mm, which is already a very thin parting line, so if your product is not an exterior part, It is not recommended to use liquid injection molding process.

In terms of efficiency: each has its own advantages. The molding speed of liquid silicone products is faster than that of solid rubber. At present, low-temperature platinum vulcanization has already been used in the solid molding process, and the efficiency is not much worse for the same product. However, in terms of product structure and shape, different products are different. More complex structures are better for liquid processing, while products such as silicone seal rings are naturally processed by solid technology.

In terms of materials: the price difference between solid silicone and liquid silicone products is still quite large so far. Liquid glue is nearly twice as high as that of solid glue. Therefore, the cost of natural solid glue will be higher in terms of product cost. The effect of the liquid water-like material is different. The silicone product produced by the liquid glue has a better texture, better stretch and resilience, and the feel of the solid glue is not low. At present, liquid glue can reach 99% pure and transparent, but solid glue can't achieve this effect.
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In terms of quality: in terms of performance and service life, there is not much difference between solid silicone products and liquid glues. The main reason is the function of the product. They all possess the unique properties of silicone.

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