At present, there are three kinds of silicone watches on the market, 1. Jelly Watch Jelly Watch adopts a large square or round meter, combined with a thick silicone strap. The design is inspired by Jelly's appearance characteristics, with bright colors and outstanding personality. Manufacturers will also add LED lights to the dial to increase the dynamics of jelly watches. 2. The watchband adopts the encapsulation technology of silica gel industry, and the elastic steel sheet is positioned on the font and pressed once in a vulcanizing machine. The strap has both the elasticity of steel sheet and the soft feel of silicone. At the same time, it also adds the interest of shrapnel to the watch. 3. Negative ion watches Negative ion watches are made by adding some ion trace elements such as negative ion powder and titanium powder to the silica gel raw materials for mixing, so that the silica gel surface has trace radiation and promotes blood circulation. Silicone rubber has better high and low temperature resistance than ordinary pure organic rubber. Traditional rubber will be frozen and brittle in the space where the sun can't shine, and the sealing time is long. As an aerospace material, silicone rubber is not afraid of high temperature and can resist cold. Whether in the extreme environment of 300°C or-90 C, it can keep the balance of chemical structure without losing its original elasticity.

Compared with natural rubber, there will be no bacteria breeding. And its surface tension is very low, it is not easy to be soaked and deformed by sweat and rain, and it has strong waterproof and corrosion resistance. Therefore, the mission life of silicone rubber products in the natural environment can reach several decades.

Silicone rubber is not omnipotent, and its tear resistance belongs to the lower category of rubber. Therefore, the joint between the silicone strap and the metal buckle is prone to small cracks due to large external force. Therefore, when using the silicone strap, you need to pay attention to the connection between the strap and the metal buckle, and don't pull it hard. In addition, the silicone strap should be cleaned with a soft cloth to remove some hard dust particles to prevent them from scratching the silicone surface and producing small cracks, which can also effectively extend the life of the strap. The history of making ceramics is quite long, which can be said to be one of the oldest production technologies. The traditional ceramic preparation process refers to various products made by mixing, molding and calcining clay or clay-containing mixture, in which the calcination is carried out in a kiln with a specific temperature and atmosphere. The high-tech ceramics used in ceramic watches obviously have to go through more sophisticated preparation processes.

The raw materials of new ceramics are ultrafine zirconia and titanium carbide powder, the particle size is about one thousandth of a millimeter, which is about one fifth of the diameter of human hair. They are homogenized and a predetermined shape can be obtained by CIM (Ceramic Injection Molding). In this way, the shapes of accessories such as watchcases and watchbands can be obtained. The CIM preformed material is put into a special furnace for high temperature sintering.

After the ceramic watchcase and watchband are made and molded, they are polished according to the required surface effect, and finally a lubricated surface texture is formed. The biggest characteristics of high-tech ceramic materials are high hardness, scratch resistance, lasting color and skin-friendliness. The biggest disadvantage is brittleness (which is also a common problem of high hardness materials), so try to avoid collision and falling in use. The advantages and complicated technological process of ceramic watches are doomed to be expensive. A brand-name ceramic watch costs tens of thousands or even hundreds of thousands of yuan. Pay attention to the authenticity when buying. In addition to the general experience in purchasing famous watches, we should pay special attention to the following points when purchasing ceramic watches:

1, weight: not necessarily heavy. Traditional high-end watches are mostly made of precious metals, so they are heavier than ordinary stainless steel watches, but ceramic materials are lighter and may not be significantly heavier than metal watches.

2. Hardness: The metal is not hard enough. In life, metal is considered as a very hard material, and many merchants will scratch their watches with metal to show their wear resistance. Be careful at this time, because from the perspective of materials science, metal is very "soft", and the highest hardness of metal is 1000, so it doesn't mean it must be a ceramic product. The hardness of glass is 5000-6000, so it is more reliable to experiment with glass than with metal (the hardness of high-tech ceramics is about 10000).