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Nanometer hydroxide wood composite material and preparation method thereof

A nano-magnesium hydroxide, hydroxide technology, applied in nanotechnology, impregnated wood, nanotechnology and other directions, to achieve good flame retardant performance, improve the level of rational utilization and utilization, and excellent mechanical properties.

Inactive Publication Date: 2013-01-16
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these treatment methods can only partially solve one of the problems. Therefore, the real practical application of fast-growing forest timber urgently needs a method that can solve the two problems of fast-growing forest timber in one step.

Method used

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  • Nanometer hydroxide wood composite material and preparation method thereof
  • Nanometer hydroxide wood composite material and preparation method thereof
  • Nanometer hydroxide wood composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Populus 69 (poplar), a fast-growing forest widely planted in northern Anhui Populus deltoids cv. I-69 / 55 ). The logs are peeled and sawn into boards with a thickness of about 5cm. After air-drying in a ventilated place, the boards are processed into 20 mm (radial direction)×20 mm (chord direction)×30 mm (longitudinal direction), with a volume of 12cm 3 With a mass of 3.0 g, the wood was pretreated for 1 hr using ultrasound to increase the reactive groups of the wood. Prepare 100 mL 1.0 mol L -1 Al(NO3 )·9H 2 O and 3.0 mol L -1 CO(NH 2 ) 2 Add concentrated ammonia water to adjust pH = 6. Use a vacuum decompression system (vacuum degree of 0.1 MPa) to vacuum impregnate the precursor liquid for 24 hours, then inject about 6-8 mL of the precursor liquid into the wood matrix. Pour the impregnated wood block into a hydrothermal reaction kettle, heat at 120 °C for 12 hr, take out the test piece after cooling to room temperature, wash it with deionized water, and then dr...

Embodiment 2

[0033] Populus 69 (poplar), a fast-growing forest widely planted in northern Anhui Populus deltoids cv. I-69 / 55 ). The logs are peeled and sawed into boards with a thickness of about 5 cm. After air-drying in a ventilated place, the boards are processed into 20 mm (radial direction)×20 mm (chord direction)×30 mm (longitudinal direction), and the wood is pretreated by microwave for 3 hours. To increase the active groups of wood. Prepare 100 mL 1.0 mol L -1 NaAlO 2 solution, using a vacuum decompression system to vacuum impregnate the precursor liquid for 24 hours, inject about 6-8 mL of the precursor liquid into a volume of 12 cm 3 In a wood matrix with a mass of 3.0 g. Pour the impregnated wood block into a hydrothermal reaction kettle, heat at 60 °C for 12 hr, or directly heat the wood block at 60-100 °C in an oven for 6-12 hr, cool to room temperature, take out the test piece and wash it with deionized water Afterwards, vacuum degree is 0.1 atm at 70 °C, and vacuum dry...

Embodiment 3

[0036] Populus 69 (poplar), a fast-growing forest widely planted in northern Anhui Populus deltoids cv. I-69 / 55 ). The logs are peeled and sawed into boards with a thickness of about 5 cm. After being placed in a ventilated place to dry, the boards are processed into 20 mm (radial) × 20 mm (chord) × 30 mm (longitudinal), and the wood is pretreated by microwave for 3 hours. Increase the reactive groups of wood. Prepare 100 mL 0.2mol·L -1 Mg(NO 3 ) 2 9H 2 O and 0.2 mol L -1 CO(NH 2 ) 2 The mixed solution was mixed and concentrated ammonia water was added to adjust the pH=5, and the precursor liquid was vacuum impregnated for 24 hours and injected into the wood matrix using a vacuum decompression system. Pour the impregnated wood block into a hydrothermal reaction kettle, heat at 160 °C for 10 hr, take out the test piece after cooling to room temperature, wash with deionized water, and then dry it in vacuum at 0.1 atm at 70 °C for 48 hr to obtain inorganic Flame retar...

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Abstract

The invention discloses a nanometer hydroxide wood composite material. The nanometer hydroxide wood composite material is a high-quality composite wood material which consists of fast-growing wood serving as a base body and inorganic nanometer hydroxide serving as a reinforcing body. The inorganic nanometer hydroxide is uniformly filled in nanometer cavities among microfibers of the fast-growing wood, and is nanometer aluminum hydroxide, nanometer aluminum oxyhydroxide, nanometer magnesium hydroxide or nanometer magaldrate. The nanometer wood composite material is prepared from the fast-growing wood serving as the base body for the first time by a (microwave) hydrothermal method, surface activity and dispersion conditions of nanometer particles in a matrix and influence of a boundary structure on the mechanical property and the flame retardant property of the composite material are researched, so that filled wood is strengthened and has multiple functions of flame retardance, smoke suppression and the like, and the novel material with the excellent mechanical property and the good flame retardant property is obtained.

Description

technical field [0001] The invention relates to a nano hydroxide wood composite material and a preparation method thereof. Background technique [0002] At present, my country's resources and environment are facing very severe challenges. Non-renewable resources are increasingly depleted and the environment is overwhelmed. In order to ensure sustainable economic development, renewable and non-polluting biomass resources and biomass materials should be fully utilized. Wood is currently the only recyclable engineering material. Using abundant wood resources to develop environmentally friendly and recyclable bio-based materials is of great significance for energy conservation and emission reduction, development of circular economy, and construction of a resource-saving and environment-friendly society. As my country started to implement the natural forest protection project in 1998, the contradiction between supply and demand of high-quality timber has increased sharply. my cou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/02B27K3/52B82Y30/00
Inventor 姚晓林刘盛全汪友明张复殿宛翠秀徐高祥张春艳艾琼
Owner ANHUI AGRICULTURAL UNIVERSITY
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