Preparation method of functionalized plant fiber plaster material

Abstract

The invention relates to a preparation method of a functionalized plant fiber plaster material. The preparation method comprises the steps of: firstly, conducting semi-carbonization treatment to plant fiber to obtain modified plant fiber, and then evenly mixing the modified plant fiber, a plaster, a water-reducing agent, an air entraining agent, a gas-forming agent, a thickener, lime and cement, to obtain the functionalized plant fiber plaster material. The preparation method has the beneficial effects of being large in waste consumption quantity and strong in product functionality, as well as the advantages that 1) the maximum plant fiber consumption quantity can achieve 50%, thus being conductive to saving resource consumption in the production process of products; 2) after being modified, the plant fiber integrates the toughness and strong adsorbability, the porosity and specific surface area of the material can be increased, from the basic phase (plaster and semi-carbonized fiber) to the internal structure of the material all have certain humidifying and heat-preserving functions, and compared with the existing energy-saving material, the functionalized plant fiber plaster material is high in waste utilization rate, and strong in functionality, and the product can obtain good properties of fracture resistance, moisture absorption, heat preservation and the like.

Description

technical field [0001] The invention specifically relates to a preparation method of a functional plant fiber gypsum material, which is mainly used in the field of building materials. Background technique [0002] my country is a large agricultural country, and the amount of agricultural waste discharged every year is astonishing. According to statistics, the amount of crop straw produced in my country is about 70 million tons every year, and the total amount of straw resources available for collection is as high as 60 million tons every year. After the crops are harvested, in order to ensure the re-cultivation of the land, a large amount of crop stalks are burned, which not only wastes natural resources, but also pollutes the environment, causing CO 2 And PM2.5 seriously exceeded the standard. With the enhancement of people's awareness of environmental protection, the treatment of crop straw has aroused people's high attention. [0003] At present, there have been a lot o...

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Problems solved by technology

[0004] In terms of literature: such as Ai Taotao studied the use of MgCl 2 , MgO as cementing material and plant fiber to prepare plant fiber decorative board formula (Ceramics, 2008 No. 8), Zhu Heqing et al. studied the application of plant fiber cement hollow lightweight wallboard in construction (Building wood-based panels, 2001 No. 4), Yang Zijiang et al. studied the plant fiber gypsum slag reinforced block (new wall material, No. 5, 2006)..., analyzing these documents, it can be found that when using plant fibers to prepare building materials, most of them are directly The method of using plant fibers, but when using plant fibers directly, there are generally problems such as easy aging and poor interface properties.

[0005] In terms of patents: there have been contents of direct compounding of gypsum and plant fibers to prepare plant fiber-gypsum composite materials, but analysis of these patents reveals that the plant fibers involved in the relevant claims have not been modified, but directly used, such as Plant fiber gypsum board light steel keel fireproof partition wall (01279630), a preparation method of plant fiber gypsum block (01138351), a production method of plant fiber reinforced and toughened fluorogypsum paper panel (201010545685), etc., using these Methods Plant fibers can be used to obtain certain thermal insulation properties, but other functions are difficult to realize. At the same time, because the surface of plant fibers contains some waxy materials, its setting time and interface properties are difficult to control.

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