The recently popular vapor degassing process is essentially a silicone oil release agent, which is used in reasonable amounts, provides good results, and is easy to use. It primarily consists of a moderate amount of coalescing siloxane (silicone oil) and a human vaporizer (Freon or equivalent).
The demolding agent can be directly mixed with the granular material. By adding 0.01% to 0.05% white oil in the material, it not only facilitates demolding but also reduces the friction coefficient of the material and the viscosity of the melt, thereby decreasing pressure loss during the process.
Release agents are widely used in the plastic industry, offering numerous functions. In practical applications, careful selection is required to meet production needs. In terms of application methods, paste release agents should be applied with a brush, while sprayable release agents are used with a spraying device. Due to the difficulty in forming a regular and even film layer with paste release agents during application, the plastic parts may have wave marks or stripes after demolding, so it is recommended to use sprayable release agents as much as possible.
Antistatic agents, flame retardants, and repellents are indispensable components of plastic compositions. Typically, plastics accumulate static charges between the mold or equipment surface during the molding process (which can be exacerbated in subsequent processing or handling), leading to dust attraction on the static surface. Excessive static can pose a risk to personal safety and even cause fires. Antistatic agents are used to create a conductive molecular layer on the workpiece surface to prevent static phenomena. The addition of repellents is to resist, avoid, and eliminate the potential侵蚀 by rodents, insects, bacteria, and other organisms during storage, transportation, and use.
For thermosetting plastics, sometimes a cross-linking agent (curing agent) is required. The two interact and cross-link with each other (the resin molecules develop into a three-dimensional structure and gradually form a giant network).
In certain applications, special-purpose additives are added to plastic components to meet specific requirements, a typical example being the foaming agent in foam plastic products. Provided by Dihao Plastic Container Co., Ltd., manufacturer of PE water tanks; please credit the source upon redistribution!