Pp melt-blown material and preparation method thereof

Abstract

The invention relates to the technical field of melt-blown raw materials, in particular to a pp melt-blown material and a preparation method thereof. The pp melt-blown material is prepared from the following raw materials: polypropylene, a cooling master batch, melt-blown powder, an auxiliary agent and a stabilizer. The peroxide content concentration of the pp melt-blown material is 6000 ppm to 7500 ppm. The pp melt-blown material has the beneficial effects that the cooling master batch, the melt-blown powder and the auxiliaries are adopted according to the proportion, so that the melting number of the polypropylene material is greatly increased, the pp melt-blown material with high melt index and low ash content can be prepared, the processing temperature can be reduced, the requirements of energy conservation and environmental protection are met, and the PP melt-blown material prepared by the method is safe and harmless to human bodies. The pp melt-blown material prepared by the preparation method disclosed by the invention is stable in gram weight, environment-friendly, pollution-free and high in superior product rate, and the melt-blown fabric prepared from the pp melt-blown material disclosed by the invention has high uniformity and consistency and cannot be broken in a filamentation process.

Description

technical field [0001] The invention relates to the technical field of melt-blown raw materials, and more specifically, to a PP melt-blown material and a preparation method thereof. Background technique [0002] Polypropylene (PP) is widely used as a thermoplastic polymer in various fields. Due to the difference in the catalysts and polymerization processes used, the properties of the obtained polymers are very different. In different application fields, various performance indicators The requirements are different, so it is necessary to achieve the required performance indicators through blending modification. At present, cooling masterbatches are mostly used to increase the melt index of polypropylene materials, reduce processing temperature, shorten product molding cycle time, and reduce energy consumption. However, ordinary cooling masterbatches have a greater impact on the overall performance of materials after they are added to the material formula. Among them, those ...

AI Technical Summary

Problems solved by technology

However, the existing pp melt-blown materials are powders polymerized by catalysts containing phthalate plasticizers, and plasticizers are very harmful to the human body. In production, low-melt polypropylene is used to add over The process of oxide degradation generation; low melting means that when polypropylene passes through the barrel of the pelletizing extruder quickly, the peroxide cannot be 100% degraded, the degradation reaction cannot be completely completed, and a large amount of peroxide will remain, and the decomposition and reaction are not complete The residual peroxide will enter the non-woven fabric product under high-temperature melt blown, making the non-woven fabric product smelly or even peculiar; the uniformity of the existing melt-blown raw materials is poor, resulting in the melt-blown non-woven fabric produced The gram weight is unstable, and the filaments are easy to break during the filament forming process; the rate of superior products is low