Sponge material for preparing yellowing-resistant cotton pad and preparation method thereof

Abstract

The invention provides a sponge material for preparing a yellowing-resistant cotton pad and a preparation method thereof, and belongs to the technical field of polymer synthesis. The sponge material is prepared by adopting a following method which comprises the following steps of preparation of a polyurethane resin component: enabling polyether polyol and isocyanate to react to obtain the polyurethane resin component, wherein the mass percentage content of an isocyanate radical is 7.5% to 8.5%, and the sum of the contents of formaldehyde, acetaldehyde and acrylaldehyde in the polyether polyoldoes not exceed 1 mug / g; preparation of a foaming agent component: uniformly mixing water, an emulsifying agent and a pore-forming agent, so that the foaming agent component is obtained; and foaming:uniformly mixing 100 parts by mass of the polyurethane resin component and 100 to 200 parts by mass of the foaming agent component, pouring into a mold, curing and oven-drying, so that the sponge material is obtained. The sponge material provided by the invention not only has excellent hydrophilicity and hand feeling comfortableness, but also has no unfavorable influence on a skin of a human body,moreover, has lower VOC (Volatile Organic Compound) emission, and is excellent in yellowing-resistant property and environmentally friendly in preparation method.

Description

technical field

[0001] The invention belongs to the field of polymer synthesis, and in particular relates to a sponge material for preparing anti-yellowing makeup cotton and a preparation method thereof. Background technique

[0002] Cosmetic cotton is one of the cosmetic products that people often use in modern society. It is small and beautiful, and is especially favored by modern women. There are many kinds of cotton pads currently on the market, which can be roughly divided into two types: latex and non-latex. The following foam materials are commonly used cosmetic cotton raw materials.

[0003] Wet-process polyurethane is to dissolve polyurethane in dimethylformamide, add a pore-forming agent and mix well, and the resulting mixture is filled and gelled in a designated mold, and then eluted with a large amount of water to form a wet-process polyurethane foam. Although wet-process polyurethane foam has a smooth texture and a good touch, dimethylformamide has a large bur...

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