When we use liquid silica gel to make silica gel mold products, we need to adjust the hardness of silica gel according to the characteristics of the production product. The hardness we talk about now refers to the hardness of the silica gel products after curing with molding liquid silica gel.Silicone has one thing about it: it's soft.But in some cases, it needs to harden, the common way to harden is to add MQ resin to silicone rubber.There are many uses, and the hardness required is also different.For example, a chocolate mold needs a hardness of 20-25 degrees, and a sex toy needs a hardness of 0-0 degrees or less.In addition, the harder the silica gel, the more brittle the product, the worse the performance, may be broken.

    The following is a list of some common hardness and suitable for some areas of liquid silicone molding, and the hardness of molding corresponding to common products in life.

0-5 degrees (including below 0 degrees) plus molding liquid silica gel, the product feels super soft, and the hardness of human skin is similar.Suitable for adult products, chest pad, shoulder pad, patch, non-slip pad and other flexible silicone rubber products, simulation of human face mold, simulation of human body body modeling.5 degrees plus molding liquid silica gel, harder than 0-5 degrees of silica gel, soft touch, and rubber band hardness is about the same.Suitable for fondant mold, soap mold, pad printing rubber.

    10-20 degrees plus molding liquid silica gel, softness, good tensile, generally continuous, harder than the rubber band.Suitable for filling molding process, such as candle handmade soap, candy chocolate, gypsum line, handicrafts, etc.

    25-35 degrees plus molding liquid silica gel, high hardness, not easy to deformation, good performance, and eraser hardness is similar, suitable for piecebrush mold.Such as cement products, cultural stone sandstone relief, resin crafts, tire mold, etc.

    40 degrees plus molding liquid silica gel, hardness is hard, the performance is poor, and the hardness of the sole is almost the same, generally used for filling, such as electronic sealant, sealing dust-proof waterproof shockproof, etc., is not recommended for mold opening process.

45-60 degrees plus molding liquid silica gel, very hard, almost no performance and plastic, very brittle, a pull on the bad, and after the oxidation of plastic products, a touch on the broken.The range is about the same as 40 degrees.

    The above is the common hardness of liquid silicone molding, if you need more detailed understanding of the product, specific products corresponding to specific silica gel, you can directly consult our new best silicone.