Low-fluoride-silicon waterborne polyurethane emulsion and elastic film product thereof

Abstract

The invention provides low-fluoride-silicon waterborne polyurethane emulsion and an elastic film product thereof, and belongs to the technical field of polyurethane and applications thereof. The low-fluoride-silicon waterborne polyurethane emulsion comprises, in weight, 15-40% of diisocyanate, 40-80% of polymer diol, 0.2-15% of polysiloxane diol, 0.4-5.0% of fluorine-containing chain extenders, 1-5% of chain extenders I, 1-10% of hydrophilic chain extenders, 0-5% of cross-linking agents and 0-10% of neutralizers. The materials are polymerized and emulsified to prepare the emulsion. According to the polyurethane emulsion prepared from the materials, the content of fluoride and silicon is low, and the elastic film product prepared from the polyurethane emulsion is high in strength, good in elasticity, surface property, water resistance and compactness, easy to release, free from toxicity and characteristic odor and not sensitized and can prevent adhesion, effectively isolate various viruses and effectively replace elastic film products such as gloves, organ bags, condoms and penetration bags prepared from natural emulsion.

Description

technical field [0001] The invention belongs to the technical field of water-based polyurethane emulsion and its application, and in particular relates to a low-fluorine silicon water-based polyurethane emulsion and elastic film products thereof. Background technique [0002] Elastic film products such as gloves, organ bags, condoms and osmotic bags are usually prepared by dipping and molding natural latex. Traditional natural latex thin-walled products have high elasticity and good flexibility, and can play a certain barrier role. However, there are natural cracks between 5000-70000 nanometers in the molecular structure of natural latex, which is harmful to viruses with smaller molecular scales. (such as HIV, hepatitis B virus, papillomavirus, etc.) lack of effective blocking ability. And natural latex contains ingredients such as allergic water-soluble protein, and about 8% of people in the crowd are allergic to latex. [0003] Polyurethane materials have high strength, ...

AI Technical Summary

Problems solved by technology

However, the preparation process of fluorine-containing raw materials is generally complicated, the synthesis conditions are harsh, and the price is expensive.

[0009] Organic fluorine and silicone have their own advantages and disadvantages in the modification of water-based polyurethane, but there is no report on the introduction of fluorine and silicon into polyurethane materials to improve its performance.

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