With the development and progress of science and technology, people on the addition reaction mechanism and deepening the cognition on silicone rubber reinforcing theory, through the use of surface water treatment high reinforcing silica, hateful to join the high proportion of reinforcing filler, concentration of crosslinking and extender chain technology, etc., not only greatly improve the mechanical strength and molding liquid silicone rubber, the mixed type of silicone rubber.

  In addition, along with the liquid injection moulding machine performance and the improvement of automation level, liquid silicone rubber injection molding is widely used in the preparation of light quality and high yield of products, such as maternal and child supplies, pacifiers, TV anode cap mechanical rubber parts, electronic appliances, automobile rubber parts, medical care with a rubber pieces, photocopiers plastic roller, and various sealing washer, etc.

  Liquid silicone products processing equipment has silicone injection machine, pressing machine.Its raw material is water thick, divided into A, B two components.Its principle is: the use of the press to A, B components of the raw material in accordance with the appropriate proportion of the mix evenly pressed into the injection machine barrel mixing, through the nozzle and then pressed into the hot mold cavity molding.

  So what are the advantages of liquid injection molding silicone rubber technology compared with the traditional hot curing technology?The following is a detailed introduction of the advantages and disadvantages of liquid silicone injection molding process.

  Advantages: the process forming temperature is relatively low, 90 to 140℃ can be.It can be used for both high temperature resistant metal materials and less high temperature resistant plastic wrap molding, which has advantages over solid hot pressing molding.High yield and easy to automate production.

  First, the viscosity of liquid silicone rubber is low, which can not only be pumped, but also realize the continuous and automation of the whole process of metering, mixing and injection molding, and can also form products of various complex shapes and structures.

  Two, vulcanization speed, can be completed within 20-30s, forming cycle is not more than 1min, not only save energy, manpower, but also improve the production efficiency.

  Low molding pressure, accurate measurement, high mold precision, products without burrs and defects, not only save raw materials, there is no post-processing process.

  Liquid injection molding silicone rubber is usually provided to users in the form of A and B component packaging. When used, only A and B components can be mixed into the injection molding machine according to the same volume or the same quality, and molded into products under heating and pressure.In order to ensure the accurate measurement of materials, the viscosity and relative density of group A and GROUP B should be basically the same.The curing properties and physical properties of the curing silicone rubber are quite different from those of potting adhesive, optical fiber coating and chip contact coating.

  Disadvantages: the cost of raw materials is several times higher than solid silica gel raw materials.

  Through the above introduction you have an understanding of liquid silicone injection molding process?Welcome to discuss with us if you have any questions or understandings. Xinjia is looking forward to your consultation and attention.