Crop straw fiber modification method

Abstract

The invention discloses a crop straw fiber modification method, and belongs to the technical field of environmental protection. The method includes the steps: removing floating dust from crop straws,placing the crop straws into a drying container, drying the crop straws and performing heat treatment; placing the crop straws after heat treatment into an explosion-proof container, and performing squeezing, stretching and microwave blasting on the crop straws after heat treatment; adding phosphoric acid solution and cellulose adsorbents into the crop straws after squeezing, stretching and microwave blasting, and stewing the crop straws; performing alkali treatment on the crop straws in sodium hydroxide solution; adding silane coupling agents and acrylic acid mixed graft modifiers and ethanoland water mixed solution into the crop straws after alkali treatment, and drying the mixture. The crushing degree and the surface roughness of the crop straws are increased by the aid of squeezing, stretching and microwave blasting, surface adsorbents are removed, surfaces are roughened to form oxidation products, straw fiber surface active points are increased, and dispersity of fibers is improved.

Description

technical field [0001] The invention relates to a fiber modification method, in particular to a crop straw fiber modification method, and belongs to the technical field of environmental protection. Background technique [0002] China is a country with a large population and a country with rapid economic development. In the 21st century, it will face the dual pressures of economic growth and environmental protection. It is of great significance to promote national economic development and environmental protection. Crop straw is a common resource. It used to be treated by simple incineration, which seriously polluted the air. Nowadays, the use of straw is more widely explored. come out. [0003] The chemical composition of crop straw is very close to that of wood, but its structure is loose, its fiber cell content is lower than that of wood, its solution extract content is higher, its ash content is larger, and its surface activity is lower than that of wood fiber. Therefore,...

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Problems solved by technology

[0003] The chemical composition of crop straw is very close to that of wood, but its structure is loose, its fiber cell content is lower than that of wood, its solution extract content is higher, its ash content is larger, and its surface activity is lower than that of wood fiber. Therefore, straw fiber needs to be pretreated, and alkali treatment is commonly used. The method can improve the dispersibility of straw fiber and enhance its response ability, but it will also reduce the tensile strength of fiber to a certain extent. Therefore, starting from changing the surface activity of crop straw, the surface of crop straw is treated to improve its surface activity. , laying the foundation for the industrial application of crop straw

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