On March 13, 2025, Earthmother Energy-Saving Technology Co., Ltd., in collaboration with Beijing Technology and Business University and SABIC (China) Research & Development Co., Ltd., successfully developed the key industrial technology for supercritical continuous extrusion foaming of polyphenylene oxide (PPO) sheets. This achievement has passed the scientific and technological appraisal organized by the China National Light Industry Council and the China Plastics Processing Industry Association.

The expert review committee—chaired by Academician Jian Xigao of the Chinese Academy of Engineering, and Wang Zhanjie, President of the China Plastics Processing Industry Association—unanimously agreed that the overall technology of this project has reached an international advanced level, with the PPO continuous extrusion foaming process achieving a world-leading position.

This milestone marks the successful development of the world’s first high-performance extruded foamed PPO material, filling a critical global gap in the field. It provides essential technological support for the transformation and upgrading of the engineering plastics industry.

Appraisal Conclusion:

Overall Technology Reaches International Advanced Level

The appraisal meeting was jointly organized by the China National Light Industry Council and the China Plastics Processing Industry Association. The review committee, consisting of seven leading experts in polymer materials—including Academician Jian Xigao—conducted a rigorous professional evaluation of the scientific and technological achievement.

During the appraisal, the committee visited Earthmother’s customized continuous extrusion foaming production line and inspected the production site. Experts also reviewed comprehensive documentation, including the project work report, technical report, third-party testing report, user feedback, novelty search report, and records of patents and publications.

Following in-depth discussions and expert inquiries, the committee concluded that the project’s technical documentation was complete and met appraisal requirements. The project was recognized as an original industrial technology whose overall technical level is internationally advanced, offering broad application prospects and significant social benefits.

Technological Breakthrough:

Comprehensive Performance Enhancement with Vast Application Potential

The project uses a special PPO compound co-developed by SABIC and Beijing Technology and Business University. Building on Earthmother’s breakthrough advancements in extrusion foaming PPO technology, the Earthmother R&D team conducted dozens of extrusion foaming experiments. By continuously optimizing equipment selection, process parameters, and mold systems, the team successfully developed a new generation of dedicated continuous extrusion foaming equipment for PPO, capable of efficient and stable operation under high-temperature conditions.

With Earthmother’s customized continuous extrusion foaming production line, this advanced PPO foam material has achieved successful industrial-scale production.

This high-performance extruded foamed PPO material not only demonstrates outstanding mechanical properties, but also achieves V-0 level flame retardancy, low dielectric constant, and other critical features. Furthermore, it supports low-carbon, clean manufacturing and customized production capabilities.

Industrialization and Commercialization:

At present, the project has applied for multiple invention and utility model patents, and one technical paper has been published. The production equipment and processes have been fully stabilized and standardized, enabling high-efficiency, low-cost, and large-scale industrial manufacturing. The technology has successfully transitioned to full industrialization, laying a strong foundation for transformative progress in the engineering plastics industry.

Anchored in Global Leadership:

Earthmother Accelerates the Development of a New Materials Ecosystem

As a strategic cornerstone of the national economy and a focal point of global high-tech competition, the advanced materials industry is embracing unprecedented development opportunities. Against the backdrop of China’s dual carbon goals and the rapid upgrade of industries, the market demand for low-carbon, high-performance new materials is experiencing explosive growth.

Founded in 2005, Earthmother has been deeply engaged in the field of innovative eco-friendly foaming technologies and the research, development, and manufacturing of advanced foamed materials for many years. Through this journey, the company has accumulated profound technical expertise and extensive practical experience, backed by strong R&D capabilities, robust innovation, and a comprehensive production system.

Looking ahead, Earthmother will continue to focus on the R&D and manufacturing of forward-looking, leading-edge polymer materials, constantly consolidating and expanding its technological leadership. We are committed to providing global customers with superior and highly competitive green material solutions, steadily advancing toward our strategic goal of becoming a world-class manufacturer of foamed products.

At the same time, Earthmother will further deepen close cooperation with upstream and downstream partners across the industry chain, as well as universities and research institutions at home and abroad. Together, we aim to build an efficient and sustainable innovation ecosystem, drive technological breakthroughs and industrial upgrades in the global high-performance materials sector, and contribute Earthmother’s expertise and strength to the high-quality development of the international new materials industry.