PBT (polybutylene terephthalate) masterbatch is a high-performance plastic coloring agent. The following is a detailed analysis of it:

1、 Definition and Characteristics

Definition: PBT masterbatch is a coloring agent made by dispersing pigments or dyes at appropriate concentrations in polyester resin (PBT) and processing them through special processes.

characteristic:

Excellent electrical insulation performance: PBT itself has excellent electrical insulation performance, which makes PBT masterbatch widely used in the field of electrical and electronics.

High temperature stability: PBT masterbatch can maintain stable performance at high temperatures and is not easily faded or deformed.

Good mechanical performance: It has high mechanical strength and can meet the requirements for the mechanical properties of the product.

Good chemical corrosion resistance: It has good stability against various chemical substances and is not easily corroded or has adverse reactions.

2、 Performance parameters

The main performance parameters of PBT masterbatch include density, melt flow rate (MFR), particle size distribution, thermal deformation temperature, thermal stability, dielectric constant, dielectric loss tangent, volume resistivity, surface resistivity, acid and alkali resistance, and moisture and heat resistance. These parameters collectively determine the processing performance, usability, and color effect of PBT masterbatch.

3、 Application Fields

Fiber optic cable manufacturing: PBT masterbatch plays a key role in fiber optic cable manufacturing, used to manufacture insulation layers in fiber optic cables to ensure their performance and quality.

In the field of electrical and electronic engineering, PBT color masterbatch is widely used due to its excellent electrical insulation performance and high temperature stability, such as coloring components such as connectors and electronic casings.

Automotive manufacturing: In automotive manufacturing, PBT masterbatch can be used to manufacture automotive interior and exterior components, such as door panels, seats, etc., providing a beautiful appearance and stable performance.

Other fields: It can also be used in construction, medical equipment and other fields to meet the requirements for product color, performance and environmental protection.

4、 Production process and quality control

Production process: The production process of PBT masterbatch includes steps such as pigment dispersion, melt blending, extrusion granulation, etc. During the pigment dispersion process, it is necessary to ensure that the pigment is evenly dispersed in PBT resin; During the melt blending process, it is necessary to control process parameters such as temperature and rotational speed; During the extrusion granulation process, it is necessary to ensure the uniformity and size stability of the particles.

Quality control: Strictly inspect raw materials to ensure that the quality of pigments, dispersants, PBT resins, etc. meets the requirements. Real time monitoring of various process parameters and production data during the production process to ensure stable product quality. Conduct strict quality inspections on finished products, including testing of appearance, color, dispersibility, heat resistance, and other aspects.

5、 Precautions for use

Processing temperature: Select the appropriate processing temperature based on the melting point and thermal stability of PBT masterbatch to avoid product quality issues caused by excessively high or low temperatures.

Uniformity of mixing: During the processing, it should be ensured that the PBT masterbatch is evenly mixed with the uncolored resin to avoid color differences or spots.

Storage conditions: PBT masterbatch should be stored in a dry, cool, well ventilated place, away from direct sunlight and high temperature environment to maintain its stable performance.