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Polylactic acid wood plastic composite material used for 3D printing musical instrument and preparation method and application thereof

A composite material and polylactic acid wood technology, which is applied in the field of polylactic acid wood-plastic composite materials and preparation, can solve the problems that the device cannot be polished, painted, and is not suitable for printing musical instruments, and achieves a simple and easy preparation scheme, good mechanical strength and Toughness, a wide range of effects

Inactive Publication Date: 2018-10-12
SOUTH CHINA AGRI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem in the prior art that devices prepared by 3D printing of wooden polylactic acid composite materials cannot be polished and painted, and are not suitable for printing musical instruments. Lactic acid wood-plastic composite material;

Method used

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  • Polylactic acid wood plastic composite material used for 3D printing musical instrument and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A polylactic acid wood-plastic composite material for 3D printing musical instruments is blended by the following components by mass percentage: modified rosewood powder 5 wt%, polylactic acid 86 wt%, toughening agent 5 wt%, nano inorganic Filler 3 wt% %, lubricant 1 wt%;

[0038] Wherein, the nano-inorganic filler may preferably be one or both of nano-silicon dioxide, nano-titanium dioxide, and carbon nanotubes. The lubricant may preferably be zinc stearate.

[0039] The toughening agent is preferably SEBS (styrene-butadiene-styrene block copolymer), SBS (thermoplastic polystyrene-polybutadiene-polystyrene block copolymer), TPU (thermoplastic polyurethane elastomer ), TPEE (thermoplastic polyester elastomer) in one or more mixtures.

[0040] The above-mentioned polylactic acid wood-plastic composite material is prepared by the following method:

[0041] S1. Utilize chemical modifier to prepare wood flour into modified wood flour, the specific steps are as follows: ...

Embodiment 2

[0049] The difference between this example and Example 1 is that the polylactic acid wood-plastic composite material used for 3D printing musical instruments is blended from the following components by mass percentage: 20wt% modified acacia wood powder, 62wt% polylactic acid , toughening agent 10 wt%, nano-inorganic filler 5 wt%, lubricant 3 wt%.

[0050] Above-mentioned step S1 is carried out according to the following method:

[0051] S11. Alkali treatment of wood powder, soak 300 mesh acacia wood powder in 5wt% NaOH aqueous solution (the mass ratio of acacia wood powder and NaOH aqueous solution is 1:15) and stir at room temperature for 24 hours, then wash the spruce wood powder with deionized water until Neutral, after filtering with a filter, place the wood powder in an oven at 90 °C for 12 h to obtain alkali-treated wood powder.

[0052] S12. Put the alkali-treated wood powder obtained in step S11 into a reaction vessel containing 5 wt% to 10 wt% maleic anhydride-absolu...

Embodiment 3

[0056] The difference between this example and Example 1 is that the polylactic acid wood-plastic composite material used for 3D printing musical instruments is blended with the following components by mass percentage: modified maple wood powder 15.5wt%, polylactic acid 70wt% %, toughening agent 8wt%, nano inorganic filler 4.5wt%, lubricant 2wt%.

[0057] Above-mentioned step S1 is carried out according to the following method:

[0058] S11. Alkali treatment of wood powder, soak 300 mesh maple wood powder in 5wt% NaOH aqueous solution (the mass ratio of acacia wood powder and NaOH aqueous solution is 1:15) and stir at room temperature for 24 hours, then wash the spruce wood powder with deionized water to Neutral, after filtering with a filter, place the wood powder in an oven at 90 °C for 12 h to obtain alkali-treated wood powder.

[0059] S12. Put the alkali-treated wood powder obtained in step S11 into a reaction vessel equipped with 10 wt% silane coupling agent-absolute et...

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Abstract

The invention discloses a polylactic acid wood plastic composite material used for a 3D printing musical instrument and a preparation method and an application thereof. The polylactic acid wood plastic composite material comprises the following components by mass percentage: 5-30 wt% of modified wood powder, 62-86 wt% of polylactic acid, 5-10 wt% of a flexibilizer, 2-5 wt% of a nano inorganic filling material, and 1-3 wt% of a lubricant. The polylactic acid wood plastic composite material has the excellent characteristics of stretching resistance, bending resistance, and impact resistance, theimpact resistance can be tested through a FDM-type 3D printer, the surface of the composite material is polished and varnished, and the polylactic acid wood plastic composite material is completely suitable for the 3D printing musical instrument.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and in particular relates to a polylactic acid wood-plastic composite material used for 3D printing musical instruments, a preparation method and an application thereof. Background technique [0002] Polylactic acid (PLA) is a commonly used FDM-type 3D printing polymer material. Its advantage is that it has no unpleasant smell when it melts. It is derived from biomass and can be completely biodegraded. It is non-toxic and harmless to the human body. Plastic, injection molding and other conventional processing methods, the processing technology is simple, so it is widely used. However, its poor mechanical properties, poor toughness, easy fracture, low melting point, and poor thermal stability greatly limit the application range of 3D printing materials. Therefore, the mechanical properties and thermal stability of PLA are usually improved by adding reinforcing materials such as carbon f...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L97/02C08L53/02C08L75/04C08L67/00C08K5/098C08K3/04C08K3/22C08K3/36B33Y70/00B27K3/04B27K5/04B27K5/00
CPCB27K3/04B27K5/001B27K5/04B33Y70/00C08K2003/2241C08K2201/011C08L67/04C08L2201/06C08L2205/035C08L2207/04C08L97/02C08L53/02C08L53/025C08L75/04C08L67/00C08K5/098C08K3/041C08K3/22
Inventor 董先明董倩倩李凯夫周武艺陆子天钟锐
Owner SOUTH CHINA AGRI UNIV
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