Silicone masterbatch: a solution to the problem of mold mouth material accumulation
In the plastic processing industry, mold mouth accumulation is a common problem that can lead to surface defects in products, affecting product quality and production efficiency. Silicone masterbatch, as an effective additive, has shown significant effectiveness in solving this problem. This article will explore how silicone masterbatch can help solve the problem of mold mouth material accumulation and analyze its mechanism of action.
1. Overview of Material Accumulation at the Mold Mouth
Mold mouth accumulation refers to the accumulation of material at the outlet of the mold during plastic processing, forming deposits that are difficult to remove. This phenomenon usually occurs in injection molding, extrusion and other processes, especially in the processing of high viscosity and high melting point plastic materials. Accumulated material not only causes uneven and uneven surface of the product, but also may cause damage to the mold and increase production costs.
2. Introduction to Silicone Masterbatch
Silicone masterbatch is a plastic additive containing silicone compounds, which has excellent thermal stability, chemical stability, and lubricity. During the plastic processing, silicone additives can function in the following ways:
-* * Reduce friction coefficient * *: Silicone masterbatch can reduce the friction between plastic and mold, thereby reducing the formation of material accumulation.
-Improving fluidity: Silicone masterbatch can improve the fluidity of plastics, making them easier to pass through molds and reducing the possibility of material accumulation.
-* * Preventing Adhesion * *: Silicone additives can form a protective film on the surface of plastic to prevent adhesion between plastic and mold, thereby reducing material accumulation.
3. Mechanism of action of silicone masterbatch
3.1 Reduce friction coefficient
The silicone compound in the silicone masterbatch can form a lubricating film at high temperatures, which can significantly reduce the friction coefficient between the plastic and the mold. The decrease in friction coefficient means that the flow of plastic in the mold is smoother, reducing the accumulation of material caused by friction.
3.2 Improving liquidity
Silicone masterbatch can also improve the flowability of plastics. Good flowability is the key to reducing material accumulation during plastic processing. Silicone additives reduces the viscosity of plastic, making it easier for plastic to pass through narrow parts of the mold, thereby reducing the formation of material buildup.
3.3 Preventing Adhesion
During high-temperature processing, plastic is prone to adhere to the surface of the mold, forming material deposits. Silicone additives can form a protective film on the surface of plastic, which can effectively prevent the adhesion between plastic and mold, and reduce the formation of material accumulation.
4. Application effect of silicone masterbatch
In practical applications, silicone additives has been proven to effectively solve the problem of mold mouth material accumulation. By adding an appropriate amount of silicone masterbatch, plastic processing companies can:
Improving product quality: reducing surface defects and enhancing the overall appearance and performance of the product.
Improve production efficiency: reduce downtime caused by clearing accumulated materials and improve production efficiency.
Extend mold life: Reduce mold wear and damage, and extend the service life of the mold.
