The main function of efficient release agents in the manufacturing process is to prevent or reduce mechanical damage during the molding of molded products. And silicone release agent is a release agent made from silicone as raw material. Its advantages include good heat resistance, moderate strength, easy formation of uniform isolation film, long release life, non-toxic, good luster, and no affinity with resin. It is widely used in various occasions such as plastics and rubber. Organic silicone release agent is currently the mainstream product in the mid-range market of rubber and plastic release agents, used in polypropylene, rubber, and polycarbonate ♂ Vinyl and polyvinyl chloride resins are widely used in the processing. Organosilicon release agents are widely used in the processing of various adhesives and plastics, including extrusion and injection molding processes, as well as in the molding of molded products. Next, the editor of Jianyi Chemical will take you to understand how to apply silicone release agents and the main application scope of silicone release agents.
1 Correct selection of efficient release agent
Organic chlorosilanes with corrosive initial reactions can only be used as the base material for mold release agents on corrosion-resistant substrates of glass and ceramic lamps. about— For the rapid injection molding processing of small products, it is advisable to use gas type silicone release agents; The application of large-scale hot mold processing products can use water lotion silicone release agent; Using the processing technology of cold film tools, it is not suitable to use aqueous release agents such as lotion, because the moisture retention on the mold surface will affect the molding accuracy of products, such as waiting for the moisture to evaporate before molding processing will take a long time, so it is better to use solution release agents with faster solvent volatilization to process rubber and plastic products with cold molds, so as to reduce the drying waiting time of release agents.
For the demolding of adhesive coated rubber products, non migratory silicone demoulding agents must be selected, and migratory demoulding agents should not be used to prevent the migration of demoulding agent components from the surface of the product and hinder the bonding of the coating. In terms of demolding and peeling force, the operation of partially migrating with the demolding agent usually has a smaller peeling force than the operation of migrating without the demolding agent component, that is, the former is easier to demold.
2 Process of using release agent
The application of silicone release agent in the molding process of rubber products is roughly as follows:
1Cleaning and processing of molds
2Coating organic silicon release agent
3Curing release agent for demolding (if needed)
4Repetitive product molding and processing
5Repeatedly apply release agent (when the release agent fails)
3 Application of Organic Silicon Release Agent
1. Rubber tire processing release agent
2. Aerosol type silicone release agent
3. High temperature resistant silicone release agent for aramid fabric molds
4. High temperature resistant non migratory silicone release agent for aerospace engineering
5. Efficient dip coating anti sticking and isolation agent
