Novel formula and processing process of polypropylene melt-blown nonwoven

Abstract

The invention discloses a novel formula of a polypropylene melt-blown nonwoven. The novel formula comprises the following ingredients in percentage by weight: 2 to 15 percent of a graphene material, 0.001 to 0.1 percent of high-carbon alkanes, 80 to 87 percent of polypropylene particles, 1 to 6 percent of an auxiliary agent and 5 to 9 percent of titanium dioxide. The graphene material comprises one of graphene and oxidized graphene, or a combination of the graphene and the oxidized graphene. The auxiliary agent comprises any one of a coupling agent, a dispersant and an antioxidant, or a combination of more of the coupling agent, the dispersant and the antioxidant. The dispersant is any one of triethyl hexyl phosphate, methyl anyl alcohol, cellulose derivatives, polyacrylamide and fatty acid polyethylene glycol ester. The coupling agent comprises titanates, and the titanates comprise butyl titanate and titanium tetraisopropanolate. The polypropylene melt-blown nonwoven has an antibacterial property and a charge adsorption property; the filtering effect is good; the dust holding capacity is great; the use safety is high; and the quality and the performance of the melt-blown nonwovenare excellent. A preparation method has the advantages of mild melting condition and low production difficulty.

Description

technical field [0001] The invention relates to the technical field of melt-blown cloth, in particular to a formula of a novel polypropylene melt-blown cloth and a processing technology thereof. Background technique [0002] The melt-blown method began in the 1950s. It is a method of preparing ultra-fine fibers by blowing polymer melts with high-speed, high-temperature airflow to make them stretch rapidly. Polypropylene has become one of the most common and popular varieties in the melt blown process due to its rich source of raw materials, simple synthesis method, good processability and excellent mechanical properties. [0003] The polypropylene melt fiber produced by melt blown technology is very thin, and the obtained melt blown cloth has a large specific surface area, small pores and large porosity, so the application characteristics such as filterability, shielding, heat insulation and oil absorption are other It is difficult to achieve the non-woven fabric produced b...

AI Technical Summary

Problems solved by technology

But it can have the following problems in specific application: (1) the dispersion problem of adding inorganic filler

Inorganic fillers of different sizes have obvious effects on the properties of polymers. Generally, the smaller the particle size, the better the overall performance of the polymer can be improved. However, if the filler is too small, there will be agglomeration problems.

Once the inorganic filler is aggregated in the fiber, the toughness of the fiber aggregate is extremely poor

(2) Control of the amount of inorganic filler added

[0008] During the filtering process of the existing melt-blown cloth structure, the traditional melt-blown cloth structure is not ideal for filtering pollutants such as smog. Part of the melt-blown cloth is made by adding graphene materials to become a molten integrated structure , can not be disassembled and replaced during use, and discarded directly after use, resulting in waste