April 20, 2025 – The field of chemical materials research and development has witnessed another innovative achievement. The patent application for “A Preparation Method of Anti-Shrinkage Polypropylene Material” submitted by Suzhou Runjia Engineering Plastics Co., Ltd. in November 2024 has entered the public notification stage. This technological innovation is expected to bring new breakthroughs in optimizing the performance of polypropylene materials.
This patent focuses on the shrinkage problem of polypropylene materials and showcases unique ingenuity in raw material formula design. According to the patent abstract, the raw materials for the anti-shrinkage polypropylene material are composed of polypropylene, low-shrinkage modifier A, low-shrinkage modifier B, toughening agent, compatibilizer, and other components, mixed in specific weight ratios. Specifically, 90 – 100 parts of polypropylene serve as the base material, combined with 8 – 12 parts of low-shrinkage modifier A and 10 – 15 parts of low-shrinkage modifier B. Additionally, additives such as whiskers and dimethylhydrocarbylchlorosilane are incorporated to form a multi-component composite system.
As AsiaMB has learned, this formula is far from a simple combination of raw materials. Instead, it achieves performance upgrades through the synergistic effects of various components. The low-shrinkage modifiers, toughening agents, and modified whiskers work in concert to inhibit the shrinkage of polypropylene at the molecular structure level, significantly enhancing the material’s anti-shrinkage properties. Once this technology is industrially applied, it will effectively address issues such as dimensional deviation and deformation caused by shrinkage in polypropylene products. This will provide higher-quality material options for industries with strict dimensional accuracy requirements, such as automotive components and electronic appliance casings, and further promote the improvement of manufacturing standards in related industries.