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Preparation method of wood-organic-inorganic hybridized nano composite material based on doped nano POSS (Polyhedral Oligomeric Silsesquioxane)

A nanocomposite material and nanotechnology, applied in the field of wood composite material preparation, can solve the problems of poor mechanical properties, low impact toughness and poor thermal stability of wood-inorganic (nano) composite materials

Active Publication Date: 2014-03-26
SHANDONG AGRICULTURAL UNIVERSITY
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  • Claims
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Problems solved by technology

[0004] In order to solve the technical problems of poor thermal stability, low impact toughness and poor mechanical properties of wood-inorganic (nano) composite materials in wood-organic polymer composites, the present invention provides a wood-organic-inorganic hybrid based on nano-POSS doping. chemical nanocomposites

Method used

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  • Preparation method of wood-organic-inorganic hybridized nano composite material based on doped nano POSS (Polyhedral Oligomeric Silsesquioxane)
  • Preparation method of wood-organic-inorganic hybridized nano composite material based on doped nano POSS (Polyhedral Oligomeric Silsesquioxane)
  • Preparation method of wood-organic-inorganic hybridized nano composite material based on doped nano POSS (Polyhedral Oligomeric Silsesquioxane)

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specific Embodiment approach 1

[0033] Specific embodiment one: the preparation method of the wood-organic-inorganic hybrid nanocomposite material based on nano POSS doping in this embodiment is carried out according to the following steps:

[0034] 1. Weigh 1 mass part of the functional monomer and the toughening agent and mix them uniformly, the mass of the toughening agent is 1% to 150% of the mass of the functional monomer to obtain a monomer solution;

[0035]2. Weigh 0.1% to 10% POSS (with organic amine functional groups) of the monomer solution mass obtained in step 1, then dry the POSS for 24 hours at 105°C and 0.01MPa under vacuum drying conditions, and then dehydrate the POSS with tetrahydrofuran The dried POSS is dissolved to obtain a POSS tetrahydrofuran solution with a POSS mass concentration of 1% to 20%, and the POSS tetrahydrofuran solution is added to the monomer solution in step 1, and stirred evenly to obtain a transparent monomer solution in which nano-POSS is dissolved;

[0036] Three, t...

specific Embodiment approach 2

[0049] Embodiment 2: This embodiment differs from Embodiment 1 in that the mass of the toughening agent in step 1 is 50% of the mass of the functional monomer. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0050] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in Step 2, 5% POSS by weight of the monomer solution obtained in Step 1 is weighed. Others are the same as in the first embodiment.

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Abstract

The invention provides a preparation method of a wood-organic-inorganic hybridized nano composite material based on doped nano POSS (Polyhedral Oligomeric Silsesquioxane), which relates to a preparation method of a composite wood material. The preparation method disclosed by the invention solves the technical problems that the heat stability and the impact toughness of a wood-organic-polymer composite material is poor and low, and the mechanical property of a wood-inorganic (nano) composite material is poor. The preparation method disclosed by the invention comprises the following steps of: firstly, dissolving nano POOS (containing an organic amine function group) into a monomer solution and compounding an initiator and a cross-linking agent with the monomer solution to form an impregnation solution; after wood is placed into the impregnation solution and then is placed into a reaction tank, sealing and vacuumizing the reaction tank, removing vacuum of the reaction tank, and pressurizing the reaction tank by air; reducing the pressure of the reaction tank to normal pressure, taking out the wood, and covering the impregnated wood by aluminum-foil paper; and heating the wood, removing the aluminum-foil and continuously heating the wood, thus obtaining the wood-organic-inorganic hybridized nano composite material. The compatibility between a wood substrate interface and a polymer of the wood-organic-inorganic hybridized nano composite material is good, and the wood-organic-inorganic hybridized nano composite material has the advantages of good mechanical strength, heat stability, dimension stability, and corrosion resistance.

Description

technical field [0001] The invention relates to a method for preparing wood composite materials. Background technique [0002] Most of the wood-organic polymer composites prepared based on monomer impregnation and polymerization have good mechanical properties and durability (corrosion resistance and dimensional stability), and retain the ecological environment material characteristics of wood. There is a market demand in the field of materials and decorative materials for special places, and it is of great significance to the efficient utilization of wood, especially low-quality wood; but most of these materials have low thermal stability due to the poor heat resistance of polymers (such as The maximum pyrolysis temperature is a measure), even lower than the wood itself, and the impact toughness of this type of material is significantly reduced due to the brittle characteristics of the polymer, which limits the widening application of this type of material. [0003] The im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/00
Inventor 李永峰董晓英路则光
Owner SHANDONG AGRICULTURAL UNIVERSITY
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