Plastic Product Release Agent

Plastic product release agent is an auxiliary substance used in the plastic processing process. Its primary function is to form a隔離膜 between the mold and the plastic product, preventing the plastic product from sticking to the mold during demolding, thereby ensuring the integrity of the product and production efficiency.

Definition and Usage

Plastic product release agent is a functional substance that exists between the mold and the product. Its main function is to facilitate the demolding operation and prevent damage to the product caused by forced removal. The隔離性 of the release agent depends on its surface properties, with its notable characteristic being a small critical surface tension, making it difficult to be wetted by liquids, thereby achieving the demolding effect.

Types and Composition

Plastic product release agents can be categorized into external release agents and internal release agents based on their usage. External release agents are directly applied to the mold, while internal release agents are added to the resin during the heating and molding process. They are compatible with liquid resin but incompatible with cured resin, forming a隔離膜. Based on their state, release agents can be classified into film-type, solution-type, paste-type, and wax-type, among others.

Performance Requirements

An ideal plastic product release agent should possess the following properties:

Thermal stability and chemical inertness: It should not corrode the mold surface and should leave no residual decomposition products.

Non-toxic: It should not affect the color of the product and should be safe and non-toxic.

Easy to prepare and use: It should be convenient to operate and should not affect the appearance and performance of the product.