China SABIC ULTEM 2210EPR Manufacturer, Supplier, Factory

The shrinkage rate of plastic reflects the degree of dimensional reduction in a plastic part after it is removed from the mold and cooled. Factors affecting plastic shrinkage include the type of plastic, molding conditions, and mold structure. Different plastics exhibit varying shrinkage rates. Additionally, the shrinkage rate is significantly influenced by the part's shape, complexity of internal structure, and the presence of inserts.

Injection molding often encounters burn marks, a critical defect that severely impacts product appearance and quality. This article deeply analyzes the root causes of burn marks and proposes systematic countermeasures.

In the wave of the low-altitude economy, engineering plastics have become an indispensable "unsung hero" for drones and electric vertical take-off and landing (eVTOL) aircraft, thanks to their lightweight, high strength, and corrosion resistance. From reinforced nylon used in robust fuselages and landing gears, to polycarbonate forming transparent and impact-resistant canopy covers; from the stable performance of polyetheretherketone (PEEK) in high-temperature motor components, to the exceptional strength that carbon fiber composites provide for rotors and primary structures—engineering plastics play a critical role in reducing weight, extending range, structural design, and safety protection. They quietly support the performance breakthroughs and commercial adoption of low-altitude aircraft, serving as a vital foundation for the ascent of this new economic paradigm.

PES is a high-performance specialty engineering plastic. Thanks to its unique molecular structure, it maintains excellent mechanical strength and dimensional stability even under long-term high-temperature environments (above 180°C). It also offers transparency, hydrolysis resistance, flame retardancy, and is BPA-free. Widely used in medical devices (e.g., reusable sterilizable instruments), electronics (high-temperature connectors), and automotive components, PES is a critical material for high-end industrial and technological products.

In the engineering plastics industry, color difference control has moved far beyond visual judgment. The L, a, b values form the internationally recognized three-dimensional coordinate system for color, representing lightness, red-green hue, and yellow-blue hue respectively. Understanding these three numbers is the key to correctly interpreting colorimeter reports and pinpointing the root cause of color deviation—whether it comes from material batch variation, drying process instability, or injection molding parameter drift.

SpaceX plans to launch one million AI satellites, ushering in an era of space-based computing. High-performance plastics such as PEEK and LCP, with lightweight and extreme-environment resistance, become key aerospace materials, opening new opportunities for engineering plastics importers.