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Biomass pearl oyster-simulated material and preparation method thereof

A technology of biomass and imitation pearls, applied in the field of composite materials, can solve the problems of loss of beautiful color on the surface, flammability, insufficient mechanical properties, etc., and achieve the effect of expanding application fields, simple preparation process, and strong operability

Active Publication Date: 2020-01-24
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Defects of fiberboard, such as insufficient mechanical properties and hygroscopic expansion, will lead to a decrease in the dimensional stability of the wood, easy to be corroded by bacteria, easy to be polluted by organic matter and cause the surface to lose its beautiful color, and serious surface deterioration will occur after being exposed to ultraviolet rays. It is flammable when there is a fire source, which greatly limits the scope and field of use of fiberboard.

Method used

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  • Biomass pearl oyster-simulated material and preparation method thereof
  • Biomass pearl oyster-simulated material and preparation method thereof
  • Biomass pearl oyster-simulated material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A method for preparing wooden pearl oyster material, comprising the following steps:

[0029] S1: After pulverizing the wood fiber, with nano-CaCO 3 Dissolved together in distilled water to form a suspension, the mass ratio of the wood fiber: nanometer substance: distilled water is 1:5×10 -4 : 20; then the suspension is sent into the colloid mill at 2500rpm, and the suspension is obtained after 10h of processing, and then the suspension is sent into the disc grinder at 2500rpm to process 10h, to obtain nano-material-wood fiber Composite material suspension, the particle size of the nano-substance-wood fiber composite material suspension is 50-500nm; S2: the nano-suspension obtained in S1 is mixed with 3.632g / L NaCl, 0.113g / L NaCl 2 SO 4 , 0.332g / LNaHCO 3 , 0.328g / L MgCl 2 ·6H 2 O, 0.284g / L CaCl 2After uniform mixing with a mixed salt solution composed of 0.177g / L KCl, keep the reaction at 40°C for 60h to obtain a mineralized nano-lignofiber suspension, and pre-coo...

Embodiment 2

[0031] A method for preparing wooden pearl oyster material, comprising the following steps:

[0032] S1: After pulverizing the wood fiber, with nano-CaCO 3 Dissolved in distilled water together to form a suspension, the mass ratio of the wood fiber: nanometer substance: distilled water is 1:20:20; then the suspension is sent to a colloid mill with a rotation speed of 3000rpm, and the suspension is obtained after 5 hours of treatment liquid, and then the above-mentioned suspension was sent to a disc grinder with a rotating speed of 3000rpm for 5h to obtain a nano-material-wood fiber composite suspension, and the particle size of the nano-material-wood fiber composite suspension was 50 -500nm; S2: Mix the nanosuspension obtained in S1 with 3.632g / L NaCl, 0.113g / L NaCl 2 SO 4 , 0.332g / L NaHCO 3 , 0.328g / L MgCl 2 ·6H 2 O, 0.284g / L CaCl 2 After uniform mixing with a mixed salt solution composed of 0.177g / L KCl, keep the reaction at 60°C for 36h to obtain a mineralized nano-li...

Embodiment 3

[0034] A method for preparing wooden pearl oyster material, comprising the following steps:

[0035] S1: After pulverizing the wood fiber, with nano-CaCO 3 Dissolved in distilled water together to form a suspension, the mass ratio of the wood fiber: nanometer substance: distilled water is 1:0.02:20; then the suspension is sent to a colloid mill with a rotation speed of 2880rpm, and the suspension is obtained after 6 hours of treatment liquid, and then the above-mentioned suspension was sent to a disc grinder with a rotation speed of 2880rpm for 6h to obtain a suspension of nano-material-wood fiber composite material, and the particle size of the suspension liquid of nano-material-wood fiber composite material was 50 -500nm; S2: Mix the nanosuspension obtained in S1 with 3.632g / L NaCl, 0.113g / L NaCl 2 SO 4 , 0.332g / LNaHCO 3 , 0.328g / L MgCl 2 ·6H 2 O, 0.284g / L CaCl 2 After uniform mixing with a mixed salt solution composed of 0.177g / L KCl, keep the reaction at 50°C for 48h...

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Abstract

The invention discloses a preparation method of a biomass pearl oyster-simulated material. The preparation method is characterized by comprising the following steps: S1, attaching a nano material to biomass fiber uniformly by using a thermal grinding method so as to prepare a nano-material / bio-fiber composite material mixed suspension; S2, using a freeze casting method to prepare a layered pearl oyster structure-simulated matrix mixed suspension from the mixed suspension obtained in the step S1; and S3, immersing an organic polymer material in the matrix mixed suspension obtained in the step S2, and then performing hot pressing so as to obtain the wood-like pearl oyster material. The preparation method is more environmentally friendly, the prepared pearl oyster-simulated biomass-simulatedlayered material has higher mechanical strength and higher specific strength, and novel performance is given to the material through functional groups, so that the material has a wide range of application.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a bionic pearl oyster material and a preparation method thereof. Background technique [0002] In the long-term evolutionary process of nature, biological materials with perfect organizational structure and unique excellent properties have been formed, such as the gums of mammals, bones and shells of molluscs, etc., especially the pearl oyster layer in shells has outstanding mechanical properties And it has attracted much attention, such as the shell of abalone is mainly composed of CaCO 3 And a small amount of biological macromolecules, its hardness is ordinary CaCO 3 Twice that of crystal, toughness is ordinary CaCO 3 More than 1000 times of the crystal. These structures are mainly formed by using pre-organized templates formed by the self-assembly of organic macromolecules (proteins, polysaccharides, lipids, etc.), and depositing inorganic molecules on them through molecu...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L33/12C08L23/06C08L29/04C08K3/00C08K3/26C08K3/36C08K3/16C08K3/30C08K3/22
CPCC08K2003/162C08K2003/166C08K2003/2241C08K2003/2275C08K2003/265C08K2003/3045C08K2201/011C08L97/02C08L33/12C08K3/00C08K3/26C08K3/16C08K3/30C08L23/06C08K3/36C08L29/04C08K3/22
Inventor 孙庆丰陈逸鹏党宝康
Owner ZHEJIANG FORESTRY UNIVERSITY
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