Method for pressing fire-proof material from bamboo wood filament and strip or shavings

A technology of shavings and silk strips, applied in the field of bamboo and wood fiber, to achieve the effects of ensuring safety, optimizing the ecological environment, and protecting forests

Inactive Publication Date: 2008-07-02
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no technical report on pressing bamboo...

Method used

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Examples

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Effect test

Embodiment 1

[0020] Embodiment 1: cut the peeled side boards of small-diameter Chinese fir into 60cm long board sections, and use the equipment and method introduced in CN200510118910.0 to cut thick and wide or thin wood with a diameter of 3mm and a length of no more than 600mm Silk strips, natural drying or drying, moisture content 15%, dipped in 1% diamine hydrogen phosphate fireproof liquid for 7 seconds, dried to 20% moisture content, then dipped in melamine modified urea-formaldehyde glue for 10 seconds After draining, carry out high-temperature steam drying to a moisture content of 8%, and then pave. The wood strands are laid into the square material mold, and the pressure is 7Mpa. After forming, put it together with the mold in an environment with a temperature of 90°C. After curing for 15 hours, Prepare a square material with a thickness of 55 mm and a width of 92 mm. Cool to 55°C and unload for later use.

Embodiment 2

[0021] Embodiment 2: the poplar wood shavings collected, thickness≤2mm, width and length are not equal, dry naturally to moisture content 25%, spray with the melamine modified urea-formaldehyde glue that is 45% with concentration, with glue amount be 12%, Then dry to a moisture content of 5%, pave and solidify in a multi-layer hot press after laying on the backing board. The hot pressing temperature is 130°C, the pressure is 1.8Mpa, and the time is 10min. 3 The plates were cooled to 60°C and discharged for later use.

Embodiment 3

[0022] Embodiment 3: with the moso bamboo shavings collected, thickness 1.5mm, width and length are not equal, dry naturally to moisture content 15%, dip in the melamine-modified phenolic resin glue that concentration is 25% for 15 seconds, then dry to moisture content The rate is 10%. After paving, it is hot-pressed in a multi-layer press. The hot-pressing temperature is 170°C, the pressure is 3.5Mpa, and the time is 30min. The thickness is 32mm and the density is 900kg / m. 3 The plates are unloaded for later use after cooling.

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Abstract

The invention provides a method which presses fireproof material by taking bamboo wood strips or wood shavings as raw material. The bamboo wood strips or wood shavings are prepared, collected, dried to meet the requirement of water-content, dipped by fireproof liquid, drained after gluing, and dried again to provide the water content less than or equal to 4% to 4-12%; die-entering pavement or pad plate upper pavement of a multilayer hot press is carried out; under the pressure of 1-10Mpa, the die is hotly solidified for 5-48h under the environment of 50-100 DEG C; after being heated to 100-180 DEG C in the hot press and solidified for 0.6-2.0min/mm of unit thickness, the material is released for standby after being cooled. The fireproof material is especially suitable for application in building industry and furniture industry, is taken as building material, furniture material and facility material in the buildings of housing, schools, conference halls and ballrooms, meets fire-control safety requirement, and is beneficial for ensuring possession and personal safety. Nowadays almost overall forest banning is carried out all over the world, and thinnings, leftover materials, lap wood and fruticose stalks are taken as raw material, thus effectively solving the source problem of bamboo wood material and having active ecological conservation meaning at the same time.

Description

technical field [0001] The invention relates to a method for pressing bamboo and wood fibers, especially bamboo and wood strands or shavings into fireproof materials through chemical fireproof treatment. Background technique [0002] Raw bamboo, logs and their threads and wood shavings are inflammable materials, and their use as building materials is subject to certain restrictions. Due to the requirements of fire safety, the demand for fireproof building materials has greatly increased, and relevant patented technologies have been disclosed one by one. CN1186517 announced the patented technology of Nanjing Forestry University's "production method for high fire-resistant wooden fire doors". Using standard wood as the raw material for door frames and door panels requires a large amount of logs that meet the specifications. In today's world where logging is generally prohibited, raw materials are difficult and expensive. high. Although the flame-retardant board and the fire-p...

Claims

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Application Information

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IPC IPC(8): B27N3/00B27N1/00B27N1/02B27N3/08B27N3/10B27N3/18
Inventor 钱俊傅深渊金永明
Owner ZHEJIANG FORESTRY UNIVERSITY
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