The development of offshore and onshore low-wind-speed wind power has driven the rapid increase in the length and root diameter of wind turbine blades, accompanied by the emergence of crazing issues in the infusion process of ultra-large blade roots.

The long-term service reliability of structural materials and components in high-temperature environments is one of the core challenges in the design of high-end equipment such as aerospace and energy power systems. Among them, creep—a phenomenon where materials undergo continuous deformation over time under constant stress and high temperature—is the key mechanical behavior that limits their service life and safety.

Applying coating treatment on product surfaces can not only significantly improve product appearance, enhance their artistry and aesthetics, but also increase the wear resistance and corrosion resistance of product surfaces, thereby playing a role in protecting products. Therefore, coating has become an essential surface treatment process in modern product manufacturing industry. The adhesion of coatings on products or substrates is a key parameter for coating quality control, which has a significant impact on ensuring coating quality, product appearance and service life.

Nowadays, consumers' pursuit of electronic products has gone beyond mere functionality, shifting toward more extreme aesthetic experiences and more reliable usage quality. Devices such as ultra-thin laptops, tablets, and smartphones not only need to be lightweight and portable but also robust and durable.

Transmission Electron Microscope (TEM), commonly referred to as transmission electron microscopy, projects an accelerated and focused electron beam onto an extremely thin sample. Electrons collide with atoms in the sample and change direction, resulting in solid-angle scattering. The magnitude of the scattering angle is related to the density and thickness of the sample, thus forming images with varying brightness. These images are displayed on imaging devices (such as fluorescent screens, photographic films, and charge-coupled devices) after magnification and focusing. Due to the extremely short de Broglie wavelength of electrons, the resolution of transmission electron microscopes is much higher than that of optical microscopes, reaching 0.1–0.2 nm with a magnification range of tens of thousands to millions of times. Therefore, transmission electron microscopes can be used to observe the fine structure of samples, even the structure of a single row of atoms—tens of thousands of times smaller than the smallest structures observable by optical microscopes.

Polycarbonate (PC) is a commonly used engineering plastic with excellent mechanical and chemical properties. During processing, storage, and application, PC comes into contact with air, and the external environment can easily affect its structure and performance, leading to varying degrees of aging of the material, which impairs its properties and service life.

The interior of an automobile is a complex environment constructed from a variety of materials, including leather, plastics, fabrics, adhesives, shock absorption and sound insulation materials, etc. During the processing and usage stages, these materials continuously emit hundreds of volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs). Collectively, these substances form what we perceive as the "in-vehicle odor".

Company A reported to our center that it had commissioned a third-party testing institution to conduct a tensile strength test on PA6 material. The result showed it was qualified (≥140MPa), but the internal test result of Company A was unqualified (125-135MPa). Due to the significant difference between the test results, Company A commissioned the Analysis and Testing Center of NERC-APM to conduct a root cause analysis of this abnormal situation.

After approximately a century of development, a variety of light sources are available for laboratory use, including enclosed carbon arc lamps, sunlight-type carbon arc lamps, fluorescent ultraviolet lamps, xenon arc lamps, metal halide lamps, and high-pressure mercury lamps. The technical committees related to polymeric materials under the International Organization for Standardization (ISO) mainly recommend three types of light sources: sunlight-type carbon arc lamps, fluorescent ultraviolet lamps, and xenon arc lamps.

The mechanical response and failure mode of materials under high strain rates are completely different from those under static conditions. The static design criteria, analysis, calculation, and verification used in engineering are entirely inconsistent with those under high strain rates—meaning the current static response characteristics of materials cannot meet the needs of simulating and predicting the deformation modes and failure modes of automotive components under special stress conditions.

Two-color injection molding refers to an injection molding process where two materials of different types or colors are plasticized separately, then injected into the mold cavity sequentially or simultaneously to produce plastic molded products with two different colors or material types.

In recent years, with the enhancement of food safety awareness and the in-depth advancement of sustainable development strategies, the safety and environmental friendliness of Food Contact Materials (FCMs) have become the focus of global attention. China has increasingly tightened safety supervision over food contact materials, and its standard system has been continuously improved. On September 16, 2025, five national standards for the determination of food contact materials under the GB 31604 series will be formally implemented. These new standards not only provide a more scientific testing basis for traditional food contact materials but also pose new challenges to the emerging post-consumer recycled plastics (PCR).