Nano silicon dioxide-doped nanocellulose material as well as preparation method and application thereof

Abstract

The invention provides a nano silicon dioxide-doped nanocellulose material as well as a preparation method and the application thereof. Nano silicon dioxide and a nanocellulose material are at least bonded by part of hydrogen bonds; based on 100% of the total mass of the nano silicon dioxide-doped nanocellulose material, the content of the nano silicon dioxide is 70-90% by mass. The nano silicon dioxide has relatively good dispersibility in rubber, so that the nanocellulose material connected with the nano silicon dioxide by part of hydrogen bonds is dispersed uniformly in the rubber, the useof a silane coupling agent and other surfactants can be reduced, and a specific gravity of the product is reduced while indirectly reducing costs of the product; moreover, the nanocellulose material is a green and environment-friendly material, so that the pressure on environments caused by traditional modified materials can be relieved.

Description

technical field [0001] The invention belongs to the technical field of modified materials, and relates to a nano-silicon dioxide-doped nano-cellulose material and a preparation method and application thereof. Background technique [0002] Cellulose is an abundant natural renewable biopolymer material, which is widely distributed in higher plants, in addition to marine animals, algae, bacteria, fungi and invertebrates. Cellulose undergoes mechanical shearing and chemical action to decompose the cellulose fiber into its substructure nano-units laterally to produce nanocellulose (MFC). Due to its high modulus, renewable, and degradable characteristics, it has become a hot topic in recent years to use it to reinforce polymer materials such as rubber. However, nanocellulose, like other nanomaterials, has strong agglomeration, poor dispersion in rubber and other polymer materials, and cannot play its role. At present, there is no simple and low-cost method for adding and dispersi...

AI Technical Summary

Problems solved by technology

CN107892762 discloses a preparation method based on discarded bamboo pulp fiber paper and hydrogenated nitrile rubber composite material. First, the discarded bamboo pulp fiber paper is stirred and pulverized into pulp at high speed, and after alkaline hydrolysis, the homogeneity reaches nanometer level to become nanocellulose. After hydrogenation and modification of nitrile rubber latex by hydrazine method, oxidized starch is added for compounding, and then mixed with other additives to make oxidized starch composite hydrogenated nitrile rubber latex, and then nanocellulose is added to the latex to toughen the latex. A composite material based on waste bamboo pulp fiber paper and hydrogenated nitrile rubber was prepared by this method. Although this method can improve the dispersion of nanocellulose, the nanocellulose still cannot be completely dispersed evenly, and the process is too cumbersome, which increases rubber mixing. The energy consumption problem in the process increases the production cost

[0005] CN107419599 discloses a carboxymethyl cellulose modified nano-silica, which consists of the following raw materials and parts by mass: 8-12 parts of carboxymethyl cellulose, 2-3 parts of nano-silica, 80 parts of sodium styrene -85 parts, 20-30 parts of ethyl acetate, the carboxymethyl cellulose modified nano-silica prepared by it has good performance and can be applied to paper making, but it does not pay too much attention to its Whether other polymer materials can be used as reinforcing materials and dispersion performance

Images