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Polymethylmethacrylate composite material for 3D printing and preparation method thereof

A polymethyl methacrylate and composite material technology, which is applied in the field of composite materials, can solve the problems of high printing temperature, few types, high configuration requirements, etc., and achieves the effects of broad market prospects and simple preparation process.

Inactive Publication Date: 2014-11-26
TAICANG BIQI NEW MATERIAL RES & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

3D printing molding technology has the following advantages: fast molding speed (more than 6 times that of other processes), simple equipment operation, suitable for office environment, and can realize colorful, multi-phase solid structure molding; its disadvantages are: it needs to be specially developed for spraying fluid (ink)
[0005] 3D printing technology cannot be promoted and applied on a large scale at present, mainly limited to 3D printing materials
At present, the types of materials used for 3D printing are still relatively small, which cannot meet the requirements of industrial applications.
In addition, conventional 3D printing technology is a fusion deposition molding technology, which requires maintaining a high printing temperature, usually greater than 200 ° C, which puts forward higher configuration requirements for 3D printers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Crush 60g of polymethyl methacrylate plastic with a viscosity average molecular weight of 200,000-700,000 into 60-100 mesh particles; under nitrogen atmosphere, dissolve 1g of acrylic acid in 27g of ethyl acetate, add 1g of azobisisobutyl Nitrile, placed at room temperature for 60 minutes, then sequentially added 1g p-nitrobenzoic acid, 10g isobutyl cyanoacetate, stirred at room temperature for 120 minutes, then added 60g polymethyl methacrylate particles, continued to stir at room temperature for 120 minutes, obtained for 3D printed polymethyl methacrylate composite.

[0028] The material is 3D printed at 35°C, and the density of the material after molding is 1.16g / cm 3 , the tensile strength is 102MPa, the flexural modulus is 2400MPa, and the shrinkage rate is 1.31%.

Embodiment 2

[0030] Crush 30g of polymethyl methacrylate plastic with a viscosity average molecular weight of 500,000-2 million into 60-100 mesh particles; under nitrogen atmosphere, dissolve 1g of acrylic acid in 40g of ethyl acetate, add 2g of azobisisobutyl Nitrile, placed at room temperature for 180 minutes, then added 7g p-nitrobenzoic acid, 20g isobutyl cyanoacetate in turn, stirred at room temperature for 240 minutes, then added 30g polymethyl methacrylate particles, continued to stir at room temperature for 240 minutes, obtained for 3D printed polymethyl methacrylate composite.

[0031] The material is 3D printed at 10°C, and the density of the material after molding is 1.21g / cm 3 , the tensile strength is 121MPa, the flexural modulus is 2678MPa, and the shrinkage rate is 0.79%.

Embodiment 3

[0033] Crush 30g of polymethyl methacrylate plastic with a viscosity average molecular weight of 200,000-2 million into 60-100 mesh particles; under nitrogen atmosphere, dissolve 10g of acrylic acid in 20g of ethyl acetate, add 1g of azobisisobutyl Nitrile, placed at room temperature for 120 minutes, then sequentially added 9g p-nitrobenzoic acid, 30g isobutyl cyanoacetate, stirred at room temperature for 160 minutes, then added 30g polymethyl methacrylate particles, continued to stir at room temperature for 180 minutes, obtained for 3D printed polymethyl methacrylate composite.

[0034] The material is 3D printed at 20°C, and the density of the material after molding is 1.19g / cm 3 , the tensile strength is 108MPa, the flexural modulus is 2498MPa, and the shrinkage rate is 1.11%.

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Abstract

The invention discloses a polymethylmethacrylate composite material for 3D printing and a preparation method thereof. The preparation method comprises the following steps: dissolving acrylic acid in ethyl acetate, adding zaodiisobutyronitrile, placing at room temperature, then sequentially adding paranitrobenzoic acid and isobutyl cyanacetate, stirring at room temperature, subsequently adding polymethylmethacrylate particles and continuously stirring at room temperature to obtain the polymethylmethacrylate composite material for 3D printing. The polymethylmethacrylate composite material comprises 30-60 percent of polymethylmethacrylate, 10-30 percent of isobutyl cyanoacetate, 1-10 percent of crylic acid, 20-40 percent of ethyl acetate, 1-2 percent of zaodiisobutyronitrile, and 1-10 percent of paranitrobenzoic acid. The composite material prepared according to the preparation method can be used for 3D printing within the temperature range of 10-35 DEG C, and the polymethylmethacrylate composite material for 3D printing and the preparation method thereof are easily popularized and applied due to simple preparation process, easy availability of the raw materials and low production cost.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a polymethyl methacrylate composite material for 3D printing and a preparation method thereof. Background technique [0002] Three-dimensional printing (Three Dimensional Printing, 3DP) is developed by E. Sachs et al. proposed in 1992 that based on the principle of inkjet printers, material droplets are ejected from the nozzle, and solidified layer by layer according to a certain path. The method is to divide the model into a series of units according to a certain method based on the 3D-CAD model obtained by the 3D scanning (or design) of the entity, usually in the direction of the z-axis into two-dimensional thin layers of a certain thickness, The spraying command is generated by the program control, and after spraying and solidifying layer by layer, a three-dimensional solid device is obtained. 3D printing molding technology has the following advantages: fast moldin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08F220/06C08F4/04C08K5/101B29C67/00
Inventor 蓝碧健
Owner TAICANG BIQI NEW MATERIAL RES & DEV
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