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PLA (polylactic acid) modified material for 3D (three-dimensional) printing and preparation method thereof

A modified material, 3D printing technology, applied in the field of 3D printing materials, can solve the problem of high product price, achieve the effect of smooth product surface, increased compatibility, and easy processing

Inactive Publication Date: 2018-02-13
NINGXIA KOCEL MOLD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, 3D printing materials are highly exclusive to equipment. In the high-end application field of 3D printing, the printing materials used in China can only rely on imports, resulting in extremely high product prices

Method used

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  • PLA (polylactic acid) modified material for 3D (three-dimensional) printing and preparation method thereof
  • PLA (polylactic acid) modified material for 3D (three-dimensional) printing and preparation method thereof
  • PLA (polylactic acid) modified material for 3D (three-dimensional) printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] According to the amount of PLA modified material prepared, according to the component distribution ratio of Example 1 in Table 1, weigh the raw materials of each component of the preparation, wherein, other additives are used according to the ratio of Example 1 in Table 2, and then press The PLA modified material of this embodiment is prepared respectively in steps:

[0024] a. Dry raw materials: Dry the polylactic acid resin with a molecular weight of 50,000-60,000 and a melt flow index of not more than 10-11g / 10min (190°C, 2.16kgf) at 100°C for 4.5h, and set aside;

[0025]b. Treatment of inorganic fillers and coupling agents: Make the coupling agent into an aqueous solution, then add acetic acid to adjust the pH value to 4.5, add the solution to the inorganic filler with a particle size of 2500 mesh in the form of spray, and then use a high-speed mixer to mix evenly and place Half an hour, dry at 50°C for 1 hour, then raise the temperature to 80°C and dry for 1 hou...

Embodiment 2

[0029] According to the amount of the prepared PLA modified material, according to the component distribution ratio of Example 2 in Table 1, weigh the raw materials of each component of the preparation, wherein, other additives are used according to the ratio of Example 2 in Table 2, and then press The PLA modified material of this embodiment is prepared respectively in steps:

[0030] a. Dry raw materials: Dry the polylactic acid resin with a molecular weight of 70,000-80,000 and a melt flow index of 12-13g / 10min (190°C, 2.16kgf) at 80°C for 6h, and set aside;

[0031] b. Inorganic filler and coupling agent treatment: Make the coupling agent into an aqueous solution, then add acetic acid to adjust the pH value to 5, add the solution to the inorganic filler with a particle size of 3000 mesh in the form of spray, and then use a high-speed mixer to mix evenly, place Half an hour, dry at 60°C for 0.5 hours, then raise the temperature to 100°C and dry for 0.5 hours, set aside; ...

Embodiment 3

[0035] According to the amount of the prepared PLA modified material, according to the component distribution ratio of Example 3 in Table 1, weigh the raw materials of each component of the preparation, wherein, other additives are used according to the ratio of Example 3 in Table 2, and then press The PLA modified material of this embodiment is prepared respectively in steps:

[0036] a. Dry raw materials: dry polylactic acid resin with a molecular weight of 90,000-100,000 and a melt flow index of not more than 13-14g / 10min (190°C, 2.16kgf) at 90°C for 65 hours, and set aside;

[0037] b. Treatment of inorganic fillers and coupling agents: Make the coupling agent into an aqueous solution, then add acetic acid to adjust the pH value to 5, add the solution to the inorganic filler with a particle size of 3500 mesh in the form of spray, and then use a high-speed mixer to mix evenly and place Half an hour, dry at 55°C for 0.7 hours, then raise the temperature to 90°C and dry for...

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Abstract

The invention relates to a high-intensity high-toughness PLA (polylactic acid) modified material for 3D (three-dimensional) printing and a preparation method thereof in the technical field of a 3D printing material. The high-intensity high-toughness PLA modified material for 3D printing is characterized by being prepared from the following ingredients in parts by mass: 100 parts of PLA, 10 to 30 parts of inorganic filling materials, 5 to 10 parts of toughening agents, 6 to 10 parts of anti-impact modifying agents and 4 to 10 parts of other auxiliary agents. The modified and prepared PLA modified material achieves an environment-friendly effect and is nontoxic; the printing is smooth; no odor exists; no pollution exists; the safety coefficient is high; a printing finished product has the excellent characteristics of bright and clean surface, beautiful appearance, uniformity, stable dimension, shrinkage difficulty and the like; the PLA modified material is suitable for being used by an FDM 3D printer; waste materials can be completely recovered and recycled; the cost is reduced; the resource utilization rate is also improved. The product manufacturing technological process is short;the equipment requirements are simple; the manufacturing process is simple and convenient; the operation is convenient; the severe chemical process operation is omitted; the preparation method is verysuitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of 3D printing materials, in particular to a high-strength and high-toughness PLA modified material for 3D printing and a preparation method. Background technique [0002] FDM technology is the most widely used and most vital 3D printing technology. Printing materials are the main technical bottleneck for the further development of 3D printing. The consumables suitable for FDM 3D printers must not only meet the requirements of high mechanical strength, toughness, low shrinkage, and suitable melting temperature, but also have a small cooling shrinkage. And a uniform structure, so that there will be no uneven distribution of internal stress and different cooling shrinkage during 3D printing, which will cause problems such as performance defects of the printed product, and it must meet safety, non-toxic, non-irritating, etc. Environmental requirements. [0003] Consumables currently suitable for FDM 3D printi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L13/00C08L15/00C08L33/04C08K13/06C08K9/06C08K9/04C08K3/34C08K3/26C08K7/08C08K3/30B33Y70/00
CPCC08L67/04B33Y70/00C08K2003/3045C08L2201/08C08L2205/035C08L13/00C08L15/00C08L33/04C08K13/06C08K9/06C08K9/04C08K3/34C08K3/26C08K7/08C08K3/30
Inventor 李天才郭永斌张景豫张勇
Owner NINGXIA KOCEL MOLD
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