Colored ETPU shoe sole and preparation method thereof

Abstract

The invention discloses a colored ETPU shoe sole and a preparation method thereof, relating to the technical field of shoe sole materials. The colored ETPU shoe sole contains the following raw material components in parts by weight: 10-20 parts of isophorone diisocyanate, 20-40 parts of polyester polyol, 10-20 parts of polyether polyol, 2-5 parts of a chain extender, 1-5 parts of white carbon black and 1-2 parts of a mixture of at least two color master batches with different colors, wherein the color master batches contains the following raw material components in parts by weight: 25-30 partsof TPU, 30-50 parts of pigments, 1-5 parts of a dispersing agent, 0.5-1.5 parts of a heat stabilizer, 0.5-1.5 parts of a light stabilizer, 10-20 parts of a filler, 6-8 parts of a compatilizer and 6-10 parts of a lubricant. By adding pigments and the compatilizer into the base material of TPU, the consistency of the pigments is increased; by adding the dispersing agent, the dispersity of the pigments is improved; by utilizing the heat stabilizer and the light stabilizer, the photo-thermal oxidation of a benzene ring structure of polyurethane can be resisted, so that the situation that the color of TPU is influenced by the yellowing is avoided; and by utilizing isophorone diisocyanate, the shoe sole is strong in light resistance, heat resistance and oxidation resistance and is unlikely to yellow, and the product quality is improved.

Description

technical field [0001] The invention relates to the technical field of shoe sole materials, more specifically, it relates to a colored ETPU shoe sole and a preparation method thereof. Background technique [0002] At present, most foaming materials are based on plastic, and a large number of air bubbles are obtained inside the plastic matrix by adding physical or chemical foaming agents. Foamed materials are widely used in daily necessities, packaging and automobiles due to their light specific gravity, heat insulation, shock absorption and sound absorption. Thermoplastic polyurethane (TPU) can be roughly divided into polyester and polyether types. Its hardness range is very wide (50HA-80HD), and it has excellent wear resistance, high mechanical strength, good water resistance, oil resistance and can be melted and recycled. Etc. TPU foam material not only retains the excellent properties of the original matrix material, but also has good resilience, low density and can be ...

AI Technical Summary

Problems solved by technology

[0003] Conventional TPU shoe materials are generally white. In order to enrich the appearance of TPU shoe materials, such as forming colored or mixed-color TPU shoe materials, it is necessary to add color masterbatch when manufacturing ETPU particles. Due to the interaction between color masterbatch and TPU Poor tolerance will lead to color drift, difficult to balance the color, and reduce product quality

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