Injection Molding Liquid Silicone

- Mar 03, 2021-

Injection molding liquid silicone (LSR) is a new type of silicone material that is non-toxic, odorless, has excellent weather resistance and chemical inertness. It is one of the high-grade silicone products that has developed rapidly in recent years. This kind of silica gel has low self-viscosity (it has certain fluidity and indeterminate shape before vulcanization), and can be fed by metering mixing equipment, using special injection molding equipment to mix the two components, injection molding, and then rapid vulcanization to form products.

Compared with traditional materials, liquid injection molding silica gel has many advantages: short molding cycle, high degree of automatic molding, low vulcanization temperature, no by-products in the vulcanization process, high product precision, no trimming, and long product life. Become a substitute for popular synthetic rubber materials and high-end applications.

The operation method of Dongguan liquid silica gel:

Mix the silica gel and the curing agent at a ratio of 100:2, and pay attention to mixing evenly to prevent the silica gel from being uncured;

Put the stirred silica gel into a vacuum machine for vacuuming to remove bubbles. The purpose of this is to completely eliminate bubbles and make the finished product smoother and bubble-free. If there is no vacuum machine, the curing time of the silicone can be extended, and the bubbles can also be discharged, but the effect is not very satisfactory.

Coat the mold species and mold frame that have been made with release agent, and fix the mold species in the middle of the mold frame, leaving a certain distance around. Pour the silica gel that has eliminated the bubbles into the mold frame slowly and steadily until the silica gel can completely cover the mold, and then wait for it to solidify. (If it is an addition molding silica gel, it can also be put in the oven to heat and cure, and it will be fully cured in about 10 minutes)