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High strength fiberboard and production method thereof

A high-strength fiber and production method technology, which is applied in the direction of fiberboard, fiber raw material processing, cellulose raw material pulping, etc., can solve the problems of insufficient strength, and achieve the effects of low cost, convenient collection of raw materials, and simple process

Inactive Publication Date: 2009-06-17
ZHEJIANG FORESTRY UNIVERSITY
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Problems solved by technology

CN1172199 discloses Cheng Yongcun's "lightweight high-strength composite wallboard" patent application technology, which uses the upper and lower layers of lightweight dressing boards as the surface layer, and uses mineral wool boards, rock wool boards, expanded pearl boards, microfiber boards or pottery. Cotton board is used as the composite board bonded by the core layer, and it is used as the wall material. The board is light in weight, but it must have a large thickness to achieve a certain strength, otherwise the strength is not high enough

Method used

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  • High strength fiberboard and production method thereof

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Embodiment 1

[0016] Embodiment 1 (the value of each item of embodiment 1 in the comparison table): standby is equivalent to 90 parts by weight of raw wood pulp under the dry state, i.e. raw paper pulp or waste paper pulp and 5 parts by weight of phenolic glue through deinking treatment, and put the pulp into In the water, use a beater to beat into micron-level fiber-resolved pulp, remove it to a rolling mill and dehydrate it to a moisture content of 30%, and put it into a phenolic glue pool with a water-to-glue ratio of 0.5:1 for dipping. For the phenolic glue with a viscosity of 15 seconds and a solid content of 40%, stir it for 1 minute, pick it up, squeeze it out until the sizing amount is 5%, dry it at 45-55°C until the moisture content is 6%, and then put it on the belt Grind into micron-sized lint-like materials in a pulverizer with a cooling device, or directly put them into a freezer for freezing and then immediately crush them into micron-sized pulverized materials, and lay them in...

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Abstract

The invention relates to a high strength fiber board which comprises 90-95 portions of paper pulp by weight and 5 to 10 portions of adhesive by weight. When the paper pulp which is raw paper pulp or deinked wastepaper paper pulp is taken as a raw material, a board body shows a maple color, and the density of the high strength fiber board is 1.3 to 1.5g / cm3. When the thickness of the high strength fiber board is 3mm, the static bening intensity of the high strength fiber board is 85 to 95MPa, the elasticity modulus of the high strength fiber board is 15000 to 17000MPa, and the inner bonding strength of the high strength fiber board is 2 to 5MPa. The production of the high strength fiber board comprises the following eight steps of: the pulping and the deinking of the paper pulp, squeezing for dehydration, gum dipping, squeezing for degumming, drying or refrigeration, crushing, mat formation and hot pressing. The high strength fiber board made according to the method has the advantages of single raw material, convenient collection, low cost, high strength of manufactured boards, and is especially suitable for being used as decorative boards and bottom boards on the high-level vehicles.

Description

technical field [0001] The invention relates to a method for producing fiberboard, in particular to a method for producing fiberboard with pulp and organic adhesives. Background technique [0002] CN101209568 discloses the technology in the patent application of Lu Hongying's "lightweight fiberboard and its preparation method", which is an improved wet-process fiberboard production method, which uses wood slices to cook or heat grind, homogeneous pulping, and slab forming , secondary dehydration, drying and shaping, protective layer coating, sanding and thickness setting, edge trimming and packaging, etc. In addition to adhesives, polyacrylamide flocculants, aluminum sulfate, paraffin, polyvinyl alcohol, whitening agent, high-strength cellulose, many raw materials, high production cost, and the strength and density of the undisclosed product in this application, there is no way to check the level of its strength and the weight of its quality. CN1172199 discloses Cheng Yongc...

Claims

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Application Information

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IPC IPC(8): D21J1/18D21C3/00D21C5/02D21C9/18B27N1/00B27N3/12B27N3/08D21J3/12
CPCY02W30/64
Inventor 金贞福于红卫
Owner ZHEJIANG FORESTRY UNIVERSITY
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