Many of the current crafts are made of silicone mold glue, because it is simple in situ molding process, mold simulation is strong, with permanent demoulding effect, imitation agate, imitation jade, imitation mahogany, imitation ivory, carving crafts, gypsum products, cultural relics copy, silicone mold glue can achieve the effect you want.






However, many people in the industry admit that they have encountered a "roadblock" - rubber bubbles, and the silicone mold glue in the production process produces a large number of bubbles, making the appearance of industrial products bumpy and unbeautiful. But as the saying goes, "a mountain is higher than a mountain", the development of silicone mold rubber defoamer, so that rubber bubbles no longer dare to misbehave. In the face of many good and bad defoaming products on the market, it is necessary to deeply understand the reasons for the foaming of mold glue, so as not to take too many detours.






Let's first understand the causes of mold foam?


First, insufficient exhaust leads to blistering.


Silicone raw materials are placed in the hot vulcanization molding mold, because there will be air residue at the moment of closing the mold, it will cause bubbles on the surface of silicone products after silicon molding.






Second, silicone vulcanization problem.


Lower than the normal vulcanization temperature of silica gel, silica gel is easy to produce bubbles after molding. The hot vulcanization temperature is too high, the surface of the silicone will begin to form during the molding process, once the vulcanization degree is thorough, the air trapped in the interior is difficult to discharge.






Third, the structure of the mold is unreasonable.


The design of silica gel molding mold is not reasonable, including the setting of exhaust holes, the selection of the position of the closing line, etc., which is a reason for the bubbles generated by silica gel molding.






Fourth, no silicone mold defoamer was added.


Silicone mold adhesive defoamer has a special effect on the foam produced by epoxy resin, resin production, AB glue, floor paint and other systems, especially excellent effect on micro-foam, with a small amount, fast defoaming, long foam suppression time, good water solubility, no oil spots and other advantages, will not affect the film formation and will not produce shrinkage holes, fish eyes and other problems.






What is silicone mold defoamer?


It is made of ether, fatty acid and a variety of active additives through a special process, easy to disperse in water-based systems, strong self-emulsification, good defoaming, foam suppression lasting, especially for water-soluble polymers and medium, low and high viscosity systems have special effects, will not produce fish eye and needle eye phenomenon






What are the characteristics of silicone mold defoamer?


1, anti-foaming, anti-foaming force is strong, the amount is small, does not affect the basic properties of the foaming system.


2, good heat resistance, chemical stability, strong versatility, non-combustible, non-explosive, does not cause environmental pollution.


3, its performance can be comparable to imported products, and the price is more obvious advantages.






Where can silicone mold defoamer be used?


Silicone mold adhesive defoamer can be used in rubber coating, natural synthetic rubber, fluorocarbon paint, Armenian rubber, natural latex, resin paint, paint resin, fluorine rubber coating, natural rubber, water-based latex coating, synthetic fiber, synthetic resin emulsion, synthetic rubber and other products.