Liquid silicone rubber typical liquid silicone rubber is soft and elastic, non-toxic, tasteless and clear, medical safety, namely high food safety, can be used for artificial breast (breast) stuffing. Liquid silica gel can be endowed with corresponding functions by participating in conductive and thermal conduction wave and other functional materials. Other application areas such as mold making, electronic module filling and sealing.
There are many kinds of liquid silicone rubber. General manufacturers can make different varieties of viscosity, different curing speed, different colors and different mechanical strength according to their needs. Typical self-adhesive liquid transparent silica gel type such as TG-8402, non-self-adhesive liquid silica gel
Liquid silicone rubber can be divided into single-component liquid silica gel and two-component liquid silica gel according to its packaging shape, and can be divided into condensation liquid silica gel and molding liquid silica gel according to its crosslinking mechanism. Condensation type liquid silicone rubber a small number of molding liquid silicone rubber can be vulcanized into elastomer at room temperature, so it is also called room temperature vulcanized silicone rubber (REFERRED to as RTV rubber).
Combined with packaging shape and cross-linking mechanism liquid silica gel can be classified as follows:
One component liquid silica gel:
1, condensation type liquid silica gel -RTV:
(1) Deacetic acid TYPE RTV
(2) Dealcoholized RTV
(3) Deketoxime type RTV
(4) Deamidation type RTV
(5) Deaminated RTV
(6) Deacetone TYPE RTV
2, add molding liquid silica gel -LTV
Two, two component liquid silica gel:
1, condensation type liquid silica gel -RTV:
(1) Dealcoholized RTV
(2) Dehydrogenated RTV
(3) Deaminated RTV
(4) Dehydroxylamine TYPE RTV
Liquid silica gel is relative to solid high temperature vulcanized silicone rubber, which is liquid glue, has good fluidity, fast vulcanization, more safe and environmental protection, and can fully reach the requirements of food grade. According to the functional groups contained in the molecular structure (that is, the crosslinking point) orientation, often the liquid rubber with functional groups dividend two categories: one is the functional group at both ends of the molecular structure is called teleclaw type liquid rubber; The other is the active functional groups in the main chain random distribution, that is, the so-called in the molecular structure with functional groups, called non-teleclaw type liquid rubber.
Silicone rubber is linear polysiloxane as the base polymer (raw rubber), to participate in crosslinking agent, reinforcing filler and other coordination agent, by collaboration, vulcanization, composed of elastomer. According to its commodity shape, silicone rubber is divided into two categories: mixed silicone rubber and liquid silicone rubber. Liquid silicone rubber is different from mixed silicone rubber, which is made of linear polysiloxane with moderate degree of polymerization as the base polymer cooperative filler, various additives and additives with self-leveling or thixotropic base material (Compound). When using generally do not need large processing equipment, according to the variety and use of extrusion, injection type, coating, in the atmosphere or heating vulcanization forming elastomer. This book comprehensively and systematically introduces the basic knowledge of liquid silicone rubber. The content includes: condensation RTV silicone rubber base polymer and coordination agent; Condensed single component RTV silicone rubber; Add molding liquid silicone rubber and so on.
Liquid silicone rubber can be used for trademarks, products, pacifiers, medical supplies, coating, impregnation and perfusion, etc. Used for crystal glue, polyurethane, epoxy resin molding mold, injection molding process, cake mold and other silicone products, widely used in the electronic industry electronic components of moisture, shipping, insulation coating and sealing data, on the electronic components and components of dust, moisture, shock and insulation maintenance effect. If tongming gel is selected to encapsulate electronic components, it can not only play a shockproof and waterproof maintenance effect, but also see the components and detect the faults of components with the probe to replace them, and the damaged silicon gel can be again sealed and repaired. Can also be used to make gypsum, wax, epoxy resin, polyester resin, polyurethane resin and low melting point alloy products molding mold, Applied to artificial leather high frequency embossing, shoe surface and bottom modeling, the production of arts and crafts, ceramics, toys, furniture, household appliances and electronic components industry imitation and gypsum, cement data molding, wax products molding, the production of models, data modeling, etc