PU foaming shoe material capable of releasing negative ions and preparation method thereof

Abstract

The invention discloses a PU foaming shoe material capable of releasing negative ions and a preparation method thereof. The PU foaming shoe material is prepared from the following raw materials in parts by weight: 70-80 parts of polyester polyurethane, 12-16 parts of ethylene-vinyl acetate copolymer, 5-7 parts of styrene-ethylene-butadiene-styrene block copolymer, 4-6 parts of a negative ion additive, 1.2-1.7 parts of 4-methylbenzenesulfonyl hydrazine, 0.45-0.55 parts of triethylene diamine, 0.08-0.12 parts of triallyl isocyanurate, 2-3 parts of talcum powder, 2-4 parts of titanium dioxide, 1-2 parts of zinc oxide, 2-4 parts of stearic acid and 1.5-2.7 parts of zinc stearate, wherein the negative ion additive is a mixture of opal powder and medical stone powder, and the mass ratio of opalpowder to medical stone powder is 1: (0.6-0.8). The PU foaming shoe material capable of releasing negative ions is small in density and light in weight; the indentation hardness is high, the tensile strength is high, and the mechanical property is good; the rebound rate is high, the compression set rate is low, the elasticity is good, and permanent deformation is not likely to happen in the usingprocess; and the overall performance is excellent.

Description

technical field [0001] The invention relates to the field of PU foam materials, in particular to a PU foam shoe material capable of releasing negative ions and a preparation method thereof. Background technique [0002] With the rapid development of the footwear industry, the varieties of sole materials are increasingly diversified. The polyvinyl chloride and rubber solid soles that dominate the traditional footwear industry have been gradually replaced by the emerging rubber and plastic foam shoes. The main materials of foam soles generally include polyvinyl chloride (PVC), polyethylene (PE), styrene-butadiene-styrene copolymer (SBS), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA) )Wait. [0003] Polyurethane material is the abbreviation of polyurethane, the English name is polyurethane, it is a kind of polymer material. Polyurethane is an emerging organic polymer material, known as the "fifth largest plastic", and is widely used in many fields of the national...

AI Technical Summary

Problems solved by technology

[0006] 1. Low density and good mechanical properties cannot be well taken into account, or due to poor foaming effect, the mechanical properties and other properties are greatly reduced, and the comprehensive properties such as strength are poor;

[0007] 2. The rebound rate is average, the compression permanent deformation is large, the elasticity is poor, and the permanent deformation is easy to occur during use;

[0008] 3. It cannot release negative ions, which cannot meet the needs of consumers for the diversity of functions.

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