Ageing resisting master batche for spinning polypropylene material and products and preparation method for ageing resisting master batche

Abstract

The invention discloses ageing resisting master batche for spinning polypropylene material and products and a preparation method for the ageing resisting master batche. The ageing resisting master batche is prepared from the following raw materials in parts by weight: 65-80 parts of polypropylene resin, 2-5 parts of a hindered phenol anti-oxidant, 3.5-6 parts of an auxiliary anti-oxidant, 8-17 parts of a light stabilizer, 3-6 parts of a dispersing agent, and 1-2 parts of a processing additive. The preparation method comprises the following steps: (1) mixing all the raw materials uniformly; (2) conducting melt extrusion and pelletization. The prepared ageing resisting master batche can effectively restrain the thermal degradation of polypropylene in a spinning manufacturing process, remarkably delays photooxidation aging and thermo-oxidative aging of spinning polypropylene products in outdoor using environment, remarkably prolongs the service life, and has the functions of improving the processability of resin, removing accumulation at die head and improving spinning efficiency.

Description

technical field [0001] The invention relates to an anti-aging master batch for spinning polypropylene materials and products and a preparation method thereof. Background technique [0002] As one of the five general-purpose plastics, polypropylene (PP) is widely used. There are a large number of tertiary carbon atoms in the molecular chain structure of polypropylene, which makes PP vulnerable to oxygen attack and oxidation. Therefore, various polypropylene products are easily affected by external factors such as light and heat during processing and use. Aging phenomenon (that is, thermal oxygen aging or photooxidative aging), seriously affects the performance of the product (such as mechanical properties), resulting in a greatly shortened product life. [0003] Especially for spinning polypropylene products such as PP non-woven fabrics, during the spinning process, due to the small diameter of polypropylene filaments, they are more susceptible to thermal and oxygen aging, r...

AI Technical Summary

Problems solved by technology

In addition, in the PP spinning process and the production process of PP spinning products, although the dispersants such as PE wax and calcium stearate used in the formula have the effect of lubricating and improving the processing performance of the resin, when the formula contains inorganic fillers, Especially when the filling fraction of inorganic filler is high, it is very easy to cause adverse effects such as increase of extruder pressure and extrusion temperature, increase of current loss, decrease of spinning efficiency and die accumulation.

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