Zhenhai Refinery successfully developed new ultra-low ash high-end polypropylene products

On May 6, Zhenhai Refinery's No.
1 polypropylene plant used domestic high-activity catalysts for the first time, and successfully developed a new polypropylene product PPH-C03 for ultra-low ash electrical membranes, marking Zhenhai Refinery's high-end polypropylene products.
A solid step
.

This product is a "three-self" product independently developed by Sinopec Ningbo New Materials Research Institute, independently compounded with high-efficiency additives, and independently sold
.
Compared with traditional polypropylene products, the electrical film material has the characteristics of ultra-low ash content.
Ash content is an important indicator to measure the electrical film material
.
The new products are used in lithium-ion battery diaphragms, capacitor films and other fields.
Raw materials with high ash content are prone to pressure fluctuations due to melt flow during the film formation process, which will increase the frequency of filter replacement.
Ash content also affects the dielectric constant of capacitor films.
, breakdown voltage and actual working parameters such as service life
.

It is understood that at this stage, domestic special materials for electrical membranes basically rely on imports, which have the characteristics of high technical barriers and high added value
.
The New Materials Research Institute benchmarks foreign products, determines core technical indicators and technical routes, screens high-activity catalysts, optimizes the formulation of additives, and formulates high-efficiency functional additives
.
In view of the current difficulties of complex process control and no production experience, relevant departments of Zhenhai Refinery and New Materials Research Institute jointly tackled key problems, conducted extensive research and repeated demonstrations, and formulated a detailed production plan
.

This production process has created four firsts, namely, the first use of high-activity catalysts, the first time to significantly reduce the amount of co-catalyst triethylaluminum, the first time to use ultra-low concentration electron donors, and the first time to use self-compounded low-ash additives
.
A total of 42 tons of new PPH-C03 products have been produced, which will be sent to downstream users for trial feedback in the near future, providing strong support for further optimization and improvement of product quality in the future
.