We are not unfamiliar for the rubber strap . The silicone strap material as the new favorite , the movement is often diving in the watch . On the surface, this strap and rubber strap is very similar to the traditional , but it seems that differences between them.
Silicone is a huge family , divided into two major inorganic silica and organic silica ethnic lines . Inorganic silica is a highly active adsorption material , usually with sodium silicate and sulfuric acid reaction , and by aging, acid bulbs and a series of post-processing process prepared . Its main ingredient is silica , the structure like a sponge . Holes connected with each other to form a huge surface area of capillary absorption system to absorb and condense the water vapor equal to 40% of weight , so much for the desiccant . Although it is not used for the production of inorganic silicone bracelet , but the watch is often used in nursing - Just watch silica particles and water into the airtight container after a few hours out , then watch the water Will be lost.
Our daily use more organic silica gel , which is divided into silicone rubber, silicone resins and silicone oil , are a special synthetic rubber in rubber . Watch band material often used , it is organic silica gel in a small branch of the family , that is room temperature vulcanized silicone rubber silicone rubber (RTV).
Production of silicone rubber material is silica , methanol and hydrochloric acid , through a series of complex chemical processes can eventually be silicone rubber . This silicone rubber due to the lower molecular weight in liquid at room temperature , it is also known as "liquid silicone . " Mixes in liquid silicone crosslinker and platinum catalyst, then its into the model , after a period of curing reaction can be cured molding ( at room temperature the reaction can be , so as silicone rubber , can be slightly heated Improve the response speed) . And form the final product. Plus various additives can fill silicone materials have different specific gravity, hardness , strength , color and texture .
Pure silicone rubber than organic rubber has better resistance to high and low temperature performance. Traditional rubber in the sun can not shine on the space, will be frozen brittle , sealed during the sealing effect . As space was developed for silicon rubber material , the biggest feature is not afraid of high temperature and can withstand cold . Whether in the 300 ° C or -90 ° C in extreme environments , it may be poised to keep the chemical structure , without losing the original flexibility.
Compared with the natural rubber will not have the growth of bacteria . Low surface tension and its not easy to be soaked in sweat and rain deformation , and a strong water corrosion. Therefore, the silicone rubber product in the natural environment of the mission life of up to several decades.
Silicone rubber is not all-powerful , the tear resistance of rubber is lower in the category. Therefore, silicone strap with metal ring connections more vulnerable to external forces generated some small cracks . So use silicone bracelet , you need to pay attention to the connection strap with metal ring part , do not pull vigorously . In addition, the seasonal wipe clean soft cloth silicone strap, removal of hard, durable particles of dust , silicone to prevent scratches the surface of its small gap , but also effectively extends the strap life .
Silicone rubber with the general method to identify more complex by IR absorption peaks of the spectrum is different from the corresponding materials science to determine the species . But consumers can only be identified through the senses . Generally speaking, colorless and tasteless silicone products , when without a transparent color , if you add a different dye and can be black and color silicone gel . However, there will be some more or less rubber smell . Protein with a point of natural rubber itself, the taste of processed rubber with sulfur , will produce a special flavor . As for some people to judge through the flexibility that the silicone rubber touch softer than it is wrong. As ordinary rubber or resin material with different additives , the same can be achieved with much different silicone products flexibility.
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