Demoulding is an important process in the production process of reclaimed rubber model products. Reclaimed rubber seal products are typical model products. Smooth mold release is one of the things that these rubber product manufacturers are most interested in seeing; the method to improve the demolding process of reclaimed rubber products. There are many, among them, the use of release agents is the quickest way. What is the mechanism of release agent in the production of reclaimed rubber products? What skills should you use when choosing a reclaimed rubber release agent?
The rubber product release agent is a functional additive between the mold and the vulcanized reclaimed rubber product. It acts as a barrier to reduce the friction and attraction between the reclaimed rubber and the mold surface, preventing the regenerated rubber and the mold surface from sticking after vulcanization. Even the release of the reclaimed rubber product without tearing occurs; the rubber release agent acts as a barrier between the rubber and the mold because the critical surface tension of the release agent is small and it is difficult to be wetted by the liquid. , so as to achieve mold release.
Recycling rubber manufacturers should master the following techniques when selecting and using mold release agents.
1. Reclaimed rubber release agent selection techniques: The reclaimed rubber product release agent should have a certain degree of thermal stability and chemical inertness. The rubber mold does not corrode the mold when it is in contact with it. When it is heated, it is not prone to charring and decomposition; it can be used during use. A uniform film or polymer layer is formed on the mold surface; it does not react with the reclaimed rubber compound; it does not contaminate the reclaimed rubber mold; it does not affect the color of the reclaimed rubber product. Choosing a good quality mold release agent can further improve the fluidity of the reclaimed rubber compound and improve the yield of recycled rubber products.
2, Reclaimed rubber release agent use skills: In order to improve the release properties of recycled rubber products, apply the release agent should be uniform, wipe uneven release of the release agent at any time, smear multiple low-strength release agent than once The stripping effect of applying a high concentration of release agent is good, because repeated repeated (usually 2-3 times) helps the release agent to be evenly dispersed between the reclaimed rubber and the mold and greatly reduces the release agent contamination. Frequencies of the problem; when using the reclaimed rubber product molds for the first time, the mold release agent should be applied multiple times until the mold release agent in the reclaimed rubber mold is applied evenly; in addition, the high concentration of the mold release agent is easily adsorbed on the surfaces of the regenerated rubber molds. Gas, so the release agent concentration should not be too high, through the test to select the most suitable concentration of the release agent, if just the concentration of the selected water-soluble release agent is too high, try to use pure water or drinking water dilution.
The reclaimed rubber product release agent is an external lubricant. To improve the release process of reclaimed rubber products, internal lubricants can also be used to reduce the adhesion between them. Later, Xiao Bian will continue to discuss with you the various lubricants in reclaimed rubber products. The kind and use of skills.
Exclusive original article [commercial authorization] reprint, excerpt and excerpt in any form are prohibited without written authorization. Focus on Hongyun rubber: learn the process formula and raw material technology of producing rubber products from recycled rubber to help you reduce costs and increase profits