Method for producing environment-friendly polypropylene high-end fiber material

Abstract

The invention discloses a method for producing an environment-friendly polypropylene high-end fiber material. The preparation method comprises the following four steps: preparing raw materials, establishing a production line, preparing a polypropylene base material and performing rheology control. The melt index of the material is 40-45 g / 10 min, the yellow index of the material is smaller than orequal to -1.0, the isotacticity of the material is larger than or equal to 95.5%, the ash content of the material is smaller than or equal to 200 mg / kg, and the tensile yield stress of the material is larger than or equal to 31 MPa. The number of fish eyes is less than or equal to 10 / 1520 cm <2>. The production material disclosed by the invention does not contain phthalate, and a brand-new non-peroxide degradation agent is added in rheological process control, so that the defects of a traditional peroxide degradation agent are avoided, and the problems of color change, peculiar smell and thelike of a product are solved. In order to further improve the product performance, through optimization of additives and optimization of compatibility, the material is clearer, the fiber thickness ismore uniform, and the hand feeling and the impression are better. The material prepared by the production method can be used as a melt-blown fabric raw material for preparing masks, and can greatly relieve the situation of shortage of raw materials for producing medical protective articles at present.

Description

technical field [0001] The invention relates to the technology in the field of melt-blown cloth materials, in particular to a method for producing high-end fiber materials of environmentally friendly polypropylene. Background technique [0002] In recent years, the domestic polypropylene fiber material market for non-woven fabrics has developed rapidly, especially high-grade PP fibers such as fine denier, ultra-fine denier, melt-blown non-woven fabric and other special resins, but most of them still need to be imported from abroad. This part of raw materials accounts for more than 25% of the market. Imported raw materials are mainly used for the production of export products, such as medical and sanitary products with high quality requirements such as masks, women's sanitary napkins, and baby diapers. Compared with imported raw materials, there are deficiencies such as large fluctuations in melt index (MFR), high impurity content, prone to discoloration, and peculiar smell....

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Problems solved by technology

[0017] In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a method for producing high-end environmentally friendly polypropylene fiber materials. The production materials do not contain phthalates, and the rheological process control By adding a new non-peroxide degradation agent, it avoids the defects of traditional peroxide degradation agents and solves the problems of color change and odor of the product

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