Polyurethane material and preparation method thereof

Abstract

The invention provides a polyurethane material and a preparation method thereof. The polyurethane material is prepared from the following raw materials in parts by weight: 100 parts of polyether polyol mixed material, 3-6 parts of wollastonite powder, 1-2 parts of mould proof additive, 60-80 parts of isocyanate mixed material, 30-40 parts of a hardening agent, 35-45 parts of a foaming agent, 40-50parts of a filler, 5-8 parts of an antibacterial agent, 1-4 parts of a slipping agent, 2.5-6 parts of a catalytic crosslinking agent, 3-5 parts of a chain extender, 0.1-2 parts of an antioxidant, and2-5 parts of a flame retardant. The polyurethane material is preferentially developed for a powder puff, thus the powder puff prepared based on the material can provide good adaptability and compatibility for the skin of the human body, compared with a powder puff prepared from traditional latex and existing industrial polyurethane, the powder puff prepared based on the material has the unique advantages of being better in skin friendliness, free of chip falling, odourless, antibacterial, high in elasticity, better in oil control property, more convenient to clean, exquisite in hand feeling,environmentally friendly and the like, meanwhile, the invention provides a brand-new polyurethane preparation technology, and the prepared polyurethane material has the wide application prospects.

Description

technical field [0001] The invention belongs to the field of polymers, and in particular relates to a polyurethane material and a preparation method thereof, in particular to a polyurethane material capable of being used for making powder puffs and a preparation method thereof, in particular to a polyurethane material for a high-elastic antibacterial powder puff and its preparation method. Background technique [0002] The existing polyurethane materials basically belong to industrial polyurethane materials. Although they have been widely used in industry, their application in the field of cosmetics is not mature, but in fact, high-quality polyurethane materials have great potential in the field of cosmetics due to their unique properties. The application potential, especially the application potential on cosmetic powder puff is huge. [0003] There are many kinds of traditional powder puff products. In terms of use, there are powder puffs for washing face, cosmetic powder ...

AI Technical Summary

Problems solved by technology

[0004] (1) Natural latex powder puffs are easy to age, have a short service life, and are severely shed during use, and have average water absorption. At the same time, they will smell of latex, and latex is an allergen, which can easily cause skin allergies

[0005] (2) Chemically synthesized latex powder puffs are more toxic during the production process and emit more toxic gases, so the finished powder puffs produced will more or less contain a certain amount of toxic gases, potentially endangering human health; and dandruff during use It is better than natural latex powder puff, but the problem of chipping can not be solved

There are also some polyurethane-based powder puffs in the prior art, such as the existing patents with patent application numbers CN201310404967.1 and CN201710621139.1. The powder puffs are prepared based on polyurethane polymerization, and the raw materials generally include polyether polyols, isocyanates, and hardeners. , foaming agent, catalyst, etc., but the performance of polyurethane puffs in the prior art is very limited compared with the performance of traditional latex puffs. For example, in the selection of polyether polyols and isocyanates, only common raw materials are used. Polyether polyols and isocyanates are combined to improve the performance of polyurethane prepolymers. The hardening agents are basically common polyols. This polyol hardening agent is a mature hardening aid in the chemical industry. There is no outstanding technical effect in the preparation of polyurethane puffs. The foaming agent distilled water is equipped with commonly used silicone surfactants. Similarly, this commonly used silicone surfactant does not play a unique role in the preparation of polyurethane puffs. , the most critical thing is the choice of catalyst. In the prior art, ether catalysts are mostly used, with general catalytic activity and low toxicity. Therefore, the raw materials for the preparation of polyurethane powder puffs in the prior art are essentially the raw materials for the preparation of industrial polyurethane. That is to say, the polyurethane powder puff in the prior art is essentially only the molding application of polyurethane working raw materials in the powder puff mold. There is no special research on human skin in the prior art, which can be friendly to human skin and can be clearly distinguished at the same time. Polyurethane puff preparation technology based on traditional latex

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