Preparation and application method of electret material for degradable resin

Abstract

The invention relates to preparation of an electret material for degradable resin. The preparation of the electret material adopts micron attapulgite and an organic acid aqueous solution as raw materials. The preparation process of the electret material is as follows: A: preparing the organic acid aqueous solution, then adding the micron attapulgite material, fully stirring and uniformly mixing; B, transferring into a drying oven for heat preservation, and then cooling to room temperature; and C, filtering to obtain the surface modified attapulgite electret material. The invention discloses an application method of the electret material for the degradable resin. The application method comprises the following steps of A, preparing surface-modified attapulgite electret master batches; and B, mixing the electret master batches with biodegradable plastic serving as a melt-blown cloth production raw material in proportion to obtain a melt-blown cloth finished product containing the electret master batches. According to the preparation and application method of the electret material for the degradable resin provided by the invention, during production and melt-blowing, a die head of an extruder can be prevented from being blocked, electrostatic charges can be effectively stored, the retention time of the charges in melt-blowing cloth can be prolonged, a relatively high electret effect can be achieved by using a small amount of the material, and the filtering efficiency can be effectively improved by terminal application. On the basis, the electret material for the degradable resin provided by the invention has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of preparation and application methods of raw materials for producing melt-blown cloth, in particular to a preparation and application method of electret materials for degradable resins. Background technique [0002] The non-woven fiber cloth produced by the melt-blown method is a polymer chip such as a degradable resin with a high melt flow rate. It is first heated by an extruder to form a high-temperature melt of the flowing polymer, and then the melt is spun from the extruder. Spinning fine stream is formed by spraying from the hole, and the high-speed hot air flow on both sides of the extruder clamps the high-temperature melt stream, and then it is drawn and stretched to form an ultra-fine fiber shape, and then gathered on the matching receiving device to form The net structure uses the waste heat of the melt that has not been completely cooled to bond the fibers to each other to form a non-woven fabric ...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the existing organic electret materials used in the production of non-woven fabrics due to the defects in materials and preparation processes, and the fact that inorganic electret materials will increase the inspection costs of enterprises and lead to unstable product quality, the present invention provides a product based on attapulgite and organic The acid is used as raw material to prepare organic electret materials, which can be firmly combined with the degradable resin reactivity of the raw material for non-woven fabrics in the production of non-woven fabrics, effectively inhibiting the precipitation of electret materials due to the weak combination of electret materials and resins. phenomenon, and can effectively store electrostatic charge, prolong the charge retention time in the melt-blown cloth, achieve a higher electret effect with a small amount of use, reduce the air resistance of the same gram weight of non-woven products, and achieve higher filtration efficiency Preparation and application method of electret material for degradable resin

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