Method for preparing nanometer SiO2 doped wood-organic-inorganic hybrid nanometer composite material
A nano-composite material and nano-technology, applied in the field of preparation of wood composite materials, can solve the problems of poor thermal stability, low impact toughness, poor mechanical properties of wood-inorganic (nano) composite materials, etc., to improve brittleness and high mechanical properties Performance and thermal stability, effect of improving interfacial compatibility
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specific Embodiment approach 1
[0034] Specific implementation mode 1: This implementation mode is based on nano-SiO 2 The preparation method of the doped wood-organic-inorganic hybrid nanocomposite material is carried out in the following steps:
[0035] 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;
[0036] 2. Weigh 0.1% to 1% nano-SiO of the mass of the monomer solution obtained in step 1 2 (with unsaturated double bonds on the surface), and then nano-SiO 2 Drying treatment for 24h under vacuum drying conditions of 105°C and 0.01MPa, and the dried nano-SiO 2 Add it into the monomer solution, and then ultrasonically treat it for 40min at a temperature of 15°C to 30°C and a frequency of 300Hz to obtain nano-SiO 2 Uniformly dispersed monomer mixed solution;
[0037] Three, take by weighing cross-linking agent, initiator and acetone, wherein 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] Specific embodiment three: the difference between this embodiment and specific embodiment one is that in step two, the nano-SiO that accounts for 0.5% of the monomer solution quality that step one obtains is weighed 2 (with unsaturated double bonds on the surface). Others are the same as in the first embodiment.
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