Method for producing medium-density fiberboard through branches and trunk of ricinus communis and stalks of miscanthus
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A technology of fiberboard, branches, applied in the field of plywood
Active Publication Date: 2014-12-03
亚丹生态家居(荆门)有限公司
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However, there is no patent application for fiberboard produced by using castor plant branches and Miscanthus stalks as raw materials
Method used
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[0021] (1) Firstly, the castor-oil branches and Miscanthus stalks with a moisture content of 35%-40% are cut into 15-30mm pieces with a drum chipper respectively, and the ratio of castor-oil branch pieces and Miscanthus stalk fragments is 45:55. Proportionally mixed, screened by a screening machine to remove oversized debris, crumbs and other impurities;
[0022] (2) Afterwards, put the mixture of qualified castor-oil branch fragments and Miscanthus stalk fragments into the precooking tank of the heat mill, and pass through the low-pressure steam for humidification and preheating. The preheated saturated steam pressure is 0.3MPa, and then the fragments are passed through The feeding screw is sent to the vertical digester of the thermal grinder, cooked at 170°C, the cooking time is 4min, and the steam pressure is 0.7MPa. After the fragments are softened and the moisture content is 35% to 50%, the fibers are separated by grinding with a thermal grinder , the grinding pressure is...
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Abstract
The invention provides a method for producing a medium-density fiberboard through branches and trunk of ricinus communis and stalks of miscanthus. The method comprises the following steps: 1, after the branches and trunk of ricinus communis and stalks of miscanthus are mixed, cutting the mixture into pieces; 2, humidifying and preheating the pieces, and performing fiber separation through a defibrator; 3, applying urea resin, an ammonium chloride curing agent and a paraffin waterproofing agent after fiber mixing, and uniformly mixing; 4, drying the fiber mixture; 5, screening the dried fibers, and manufacturing the fiber rough board through hot pressing of a hot press; 6, cooling the rough board, cutting edges and sanding, so as to obtain the finished product medium-density fiberboard. The medium-density fiberboard manufactured through the method provided by the invention is smooth in surface, uniform in fiber texture, moderate in density, good in dimensional stability, good in machining performance, high in bonding strength, static bending strength and plane tensile strength, good in elastic modulus, strong in bolt holding force, and low in moisture absorption and water absorption performance. According to the method, the branches and trunk of ricinus communis and stalks of miscanthus are used to produce the fiberboard, that branches and trunk of ricinus communis are cut down in successive years for updating is achieved and the forest fire caused by stalks of miscanthus is eliminated, and the method is suitable for areas, where ricinus communis and miscanthus grow.
Description
technical field [0001] The invention relates to plywood, in particular to a plywood fiberboard produced from castor-bean branches and miscanthus stalks. Background technique [0002] Known for: castor ( Ricinus communis ) belongs to Euphorbiaceae, annual or perennial herb, shrub or tree-like plant, generally 1-4.5m high. Castor has wide adaptability, is easy to grow, and is resistant to barrenness, drought, and salinity. Castor is one of the top ten oil crops in the world. The oil content of its seeds is as high as 46% to 56%. Castor oil is widely used in chemical industry, medicine, etc. Castor stalks and cortex are rich in fibers, which can be used as raw materials for papermaking and artificial cotton . Miscanthus ( Miscanthus ) is a general term for various miscanthus plants, containing about 15 to 20 species, belonging to the Gramineae family, mostly born in subtropical low-altitude areas. Wait, there are not many ways to use it. At present, castor bean branches ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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