Method for preparing acrylic resin modified graphene oxide leather tanning agent

Abstract

The invention relates to a method for preparing an acrylic resin modified graphene oxide leather tanning agent. Pollution becomes a main problem that hampers the sustainable development of leather industry, wherein a chrome tanning agent is one of leading pollution sources. The method comprises the following steps of: adding concentrated sulfuric acid into a mixture of graphite powder and sodium nitrate, adding potassium permanganate, raising the temperature, reducing the temperature, washing, and dispersing by using ultrasonic waves to obtain an aqueous solution of graphene oxide; and adding methacrylic acid and acrylic acid into the aqueous solution of graphene oxide, treating by using ultrasonic waves, heating, dripping an initiator solution, keeping the temperature, reacting, and controlling the solid content to be 15 percent to obtain a product. The leather tanning agent can be used as a main tanning agent and is used for tanning leather; the tensile strength, the tearing strength and the breaking elongation of the tanned leather are equivalent to those of chrome tanned leather, and the tanned leather has soft and smooth handfeel; the leather tanning agent can substitute pollutional tanning agents such as a chrome tanning agent, an aldehyde tanning agent and the like, so that the pollution of the chrome tanning agent is reduced or eliminated from the source; and the leather tanning agent has a good application prospect.

Description

Technical field [0001] The present invention involves a preparation method for a leather tannis, which specifically involves a preparation method for a aligo oxide citrine tannant in acrylic. Background technique [0002] At present, the main problem that plagues the sustainable development of the leather industry is the problem of pollution, of which chromium tannis is one of the most important sources of pollution.In response to the pollution of chromium tannasters, the current solutions to the domestic and foreign solutions are: First, the use of high -efficiency chromium tannasas to improve the penetration and absorption of chromium tannants in the skin fiber, and reduce the amount of chromium waste in the production process.Generally, only 60%to 70%of the leather fiber is absorbed by the leather fiber. The absorption rate after using high -efficiency chromium tannasas was increased to more than 90%.The second is to replace chromium tannants with aluminum, iron, tadpoles, tit...

AI Technical Summary

Problems solved by technology

There is still a certain gap between the quality of leather tanned by these tanning agents and chrome tanning agents, and there are also problems of pollution and resource shortage after a large amount of aluminum, zirconium, and titanium tanning agents are used; vegetable tanning agents are derived from the roots and stems of certain plants. Extracted from leaves, leaves, etc., a large amount of use will lead to the result of forest destruction; syntans are sulfonated products of phenol and formaldehyde condensation products, which will cause formaldehyde pollution and excessive formaldehyde content in leather products during synthesis and use. Formaldehyde is considered a carcinogen

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