Is ExxonMobil's PP 3155E5 so hard to beat?
The new production capacity of polypropylene plants has increased sharply. It is estimated that 10 million tons of new production capacity will be added from 2019 to 2020. New petrochemical enterprises will list polypropylene for non-woven fabrics as one of the key development brands.
Light, soft, and functional non-woven fabrics have become a hot spot for development. Polypropylene resins are required to have better fluidity and meet the requirements of the 3rd and 4th generation imported high-speed production lines of German Reifen to produce ultra-fine denier nonwovens. According to the requirements of spinning, the fiber reaches 1.0 to 1.5D, or even 0.5 to 0.9D.
Auxiliary Development Hotspot 1:
Low-odor, high-efficiency, high-flow peroxide degrader
EXXON3155E5, SECCO 2040, Luoyang Petrochemical Y35X, etc. Imported and domestic non-woven polypropylene special materials are produced by peroxide degradation method.
Peroxide breaks the polypropylene molecular chain, improves the melting index, makes the molecular weight distribution more uniform, and improves the spinnability.
EXXON3155E3, as a benchmark grade for non-woven fabrics, has the advantages of low odor and good spinnability, and petrochemical enterprises have followed suit. In addition to catalysts, polymerization processes, propylene raw materials and other influencing factors, peroxide degraders with high degradation efficiency, low peroxide residues, and low odor are the focus of development.
Liquid peroxides are commonly used, such as peroxide 101, etc. With the continuous improvement of transportation safety and storage safety requirements, liquid peroxides have the risk of being inflammable and explosive. Peroxide has become the preferred product of petrochemical enterprises.
Auxiliary manufacturers can pay attention to the development of solid peroxide masterbatch, pay attention to safety, low odor, low residue, low dosage, and meet the requirements of petrochemical enterprises to add additives
auxiliaries Development Hotspot 2:
Development of high-efficiency, discoloration-resistant antioxidant additive package
High-end medical and sanitary non-woven fabrics have high requirements for whiteness and yellowing resistance. Adding peroxides during production consumes antioxidants, and at the same time easily causes yellowing of polypropylene resin, making the color of the non-woven fabric produced yellow or red. Non-woven fabrics are easily discolored when stored in a humid and hot environment, resulting in unqualified products.
Auxiliary manufacturers can focus on the development of high-efficiency antioxidants that are resistant to discoloration, which can not only stabilize the melting index of polypropylene, ensure that the oxidation induction period is qualified, and ensure the stability of production, so that polypropylene has the Better processing fluidity, non-woven fabrics have better appearance, storage stability and quality.
Auxiliary Development Hotspot 3: High Flow Processing Aids
Few petrochemical companies add lubricants and processing aids to improve fluidity when producing polypropylene for non-woven fabrics , Spinnability reports.
Foreign petrochemical enterprises are also difficult to obtain relevant processing aid information due to technical confidentiality reasons.
Auxiliary manufacturers can learn from the method of adding processing aids such as PPA organic fluorine additives to polypropylene for film and pipe to improve the efficiency of blown film and pipe extrusion, and study the addition of processing aids to polypropylene To improve the spinnability effect.
The really expected effect is to use processing aids (non-fluorine additives) to replace peroxides to achieve the effect of high-speed fine denier spinning.
Auxiliary development hotspot 4:
Safe, non-irritating, antibacterial auxiliary development
With the progress of society, medical, women, children, elderly Human non-woven hygiene products have higher requirements for antibacterial, antibacterial, and deodorant. At present, petrochemical plants have tried to develop professional antibacterial polypropylene non-woven materials, and Yangzi Petrochemical and Zhenhai Refinery have made active attempts, reaching the scale of batch production of 100-ton antibacterial polypropylene resin.
The antibacterial polypropylene special material N40Q developed by Zhenhai Refinery has been popularized and applied in Shanghai Fengwei Garment Accessories Co., Ltd., Jinjiang Besta and other enterprises, and the feedback is good.
Auxiliary manufacturers can focus on the development of antibacterial additives with high safety, discoloration resistance, small particle size and good dispersion, which can meet the needs of high-speed production of fine denier antibacterial non-woven fabrics.
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