PLA/POE composite material for 3D printing of chest and abdomen fixing bands

A 3D printing and composite material technology, which is applied in the field of PLA/POE composite materials and its preparation, can solve the problem of unsuitable 3D printing chest and abdomen fixation belt, no obvious improvement of PLA heat resistance and impact strength, and adverse effects on the performance of the final product and other problems, to achieve the effect of smooth printing process, beautiful appearance, and easy industrial production

Inactive Publication Date: 2018-01-19
HEILONGJIANG XINDA ENTERPRISE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese patent application publication number CN103665802A discloses a PLA material modification method that can be used for 3D printing. The method uses inorganic nanomaterials as a toughening agent to toughen and modify PLA. Although this method can enhance the toughness of polylactic acid, But there is no obvious improvement in the heat resistance and impact strength of PLA
Unavoidable adverse effects on the performance of the final product
[0009] Although the above research has improved some properties of polylactic acid, it also has corresponding disadvantages and is not suitable for 3D printing chest and abdomen fixation belts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method of the modified polylactic acid composite material applicable to 3D printing adopts the following steps:

[0032] (1) 50 parts (weight ratio, the same below) of polylactic acid 4032D, 35 parts of polyolefin elastomer (POE) 600C, 5 parts of crosslinking agent benzoyl, 9 parts of silica, 1 part of calcium zinc stabilizer;

[0033] (2) Weigh each material according to the ratio in (1), mix in a high-speed mixer for 5 minutes, set the temperature of the high-speed mixer to 40°C, and set the speed to 2500r / min to obtain a premix, and place the premix in an oven medium, dry at 50°C for 3 hours;

[0034] (3) Place the dried premix obtained in (2) in a twin-screw extruder for extrusion and drawing. The temperature of the twin-screw extruder is set as follows: 155°C, 160°C, 170°C, 170°C, 170°C ℃, 170℃, 170℃, 170℃, 175℃, 180℃. The screw speed is 110r / min, and the feeding speed is 4.6 r / min;

[0035] (4) The polylactic acid wire obtained in (3) is 3D prin...

Embodiment 2

[0037] The preparation method of the modified polylactic acid composite material suitable for 3D printing adopts the following steps:

[0038] (1) 70 parts (weight ratio, the same below) of polylactic acid 4032D, 25 parts of polyolefin elastomer (POE) 600C, 5 parts of crosslinking agent benzoyl, 9 parts of carbon nanotubes, and 1 part of calcium zinc stabilizer;

[0039] (2) Weigh each material according to the ratio in (1), mix in a high-speed mixer for 3 minutes, set the temperature of the high-speed mixer to 50°C, and set the speed to 3000r / min to obtain a premix, and place the premix in an oven medium, dry at 50°C for 3 hours;

[0040] (3) Place the dried premix obtained in (2) in a twin-screw extruder for extrusion and drawing. The temperature of the twin-screw extruder is set as follows: 155°C, 160°C, 170°C, 170°C, 170°C ℃, 170℃, 170℃, 170℃, 175℃, 180℃. The screw speed is 110r / min, and the feeding speed is 4.6 r / min;

[0041] (4) The polylactic acid wire obtained in (...

Embodiment 3

[0043] The preparation method of the modified polylactic acid composite material suitable for 3D printing adopts the following steps:

[0044](1) 64 parts (weight ratio, the same below) of polylactic acid 2003D, 30 parts of polyolefin elastomer (POE) capa6500, 3.5 parts of crosslinking agent benzoyl, 2 parts of graphene, 0.5 parts of calcium zinc stabilizer;

[0045] (2) Weigh each material according to the ratio in (1), mix in a high-speed mixer for 5 minutes, set the temperature of the high-speed mixer to 40°C, and set the speed to 2500r / min to obtain a premix, and place the premix in an oven , drying at 50°C for 3 hours;

[0046] (3) Place the dried premix obtained in (2) in a twin-screw extruder for extrusion and drawing. The temperature of the twin-screw extruder is set as follows: 165-170°C, 170-175°C, 175-180°C ℃, 175-180℃, 175-180℃, 175-180℃, 175-180℃, 175-180℃, die head temperature 180-185℃, screw rotation speed 150-180r / min, feeding speed 10 -15r / min;

[0047] (4)...

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PUM

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Abstract

The invention relates to a PLA / POE composite material for 3D printing of chest and abdomen fixing bands and a preparation method of the material. The material is prepared from the following raw materials in percentage by mass: 50-70 parts of polylactic acid (PLA), 25-45 parts of polyolefin elastomer (POE), 1-5 parts of a cross-linking agent, 2-10 parts of an inorganic filler and 0.5-1 part of a stabilizer. The raw materials are mixed by a high-speed mixer, and extruding drawing is performed by using a double-screw extruder. Compared with the prior art, the composite material prepared by the preparation method disclosed by the invention has good flexibility, and meanwhile the impact strength, heat resistance and elongation at break are all greatly improved, so that the performance requirements of the chest and abdomen fixing bands can be met. The composite material is used for 3D printing of the chest and abdomen fixing bands, the printing is smooth, and the finished product has the advantages of smooth surface, attractive appearance, uniformity, stable size and the like.

Description

technical field [0001] The invention belongs to the field of polymer materials and is suitable for 3D printing materials, in particular to a PLA / POE composite material suitable for 3D printing chest and abdomen fixing belts and a preparation method thereof. Background technique [0002] 3D printing technology, a type of rapid prototyping technology, is a technology based on digital model files, using bondable materials such as metal or plastic, to construct objects by slicing and printing layer by layer. It has been widely developed in the fields of mold design, industrial machinery parts manufacturing, automobiles, aviation, medicine and medicine. 3D printing technology mainly includes stereolithography, laser sintering, fusion lamination, etc. Among them, fusion lamination printing (FDM) is an extremely important one, and its application range is also extremely wide. [0003] The main principle of Fused Deposition Printing Technology (FDM) is to heat the thermoplastic mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L23/08C08K5/07C08K3/36C08K7/24C08K3/04B33Y70/00B33Y80/00B29C47/92B29C48/92
Inventor 周利波刘刚谢众
Owner HEILONGJIANG XINDA ENTERPRISE GRP
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