3D printed PLA consumable and preparation method thereof

A 3D printing and consumable technology, applied in the direction of additive processing, etc., can solve the problems of lack of flexibility and elasticity, affecting PLA products, easy bending and deformation, etc., and achieve low cost, simple process, and environment-friendly effects

Inactive Publication Date: 2015-06-03
LIFENG NEW MATERIAL TECH SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 3D printing technology is a revolutionary industrial molding technology. Raw materials can be directly formed by 3D printers. It is based on a digital model file, using powdered metal or plastic and other bondable materials, through layer-by-layer printing. The technology of constructing objects does not need to go through the manufacture of molds, which saves the time and cost of mold manufacturing. With the rapid development of 3D printing technology, its requirements for materials are also rapidly increasing. The existing 3D printing consumables are mainly PLA plastic ( Polylactic acid), ABS, nylon618, PVA, etc. Among them, since PLA plastic is a new type of biodegradable material, it is made of starch raw materials proposed by renewable plant resources (such as corn), and the starch raw materials are made through fermentation process Lactic acid is then converted into polylactic acid by chemical synthesis, which has good biodegradability, can be completely degraded by microorganisms in nature after use, and finally produces carbon dioxide and water without polluting the environment, which is very beneficial to the protection of the environment and is a recognized environmental Friendly material, in line with US FDA standards. Therefore, PLA plastics are widely used in 3D printing materials. Although PLA plastics have high tensile strength and compression modulus in applications, they are hard, poor in toughness, lack of flexibility and Elasticity, easy to bend and deform, these shortcomings limit its application. In order to overcome the shortcomings of PLA plastics in application, most of the PLA products on the market are modified from PLA plastics and processed into PLA products. Both are copolymerized with other resins, and the added resin copolymers account for a high proportion of PLA products, thus affecting the environmental protection and degradation performance of PLA products, and losing the advantages of PLA plastic itself

Method used

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  • 3D printed PLA consumable and preparation method thereof

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preparation example Construction

[0038] Correspondingly, the embodiment of the present invention provides a method for preparing PLA consumables for 3D printing, the flow chart of the preparation method is as follows figure 1 Shown, this preparation method comprises the steps:

[0039] (1) Weigh the formula components

[0040] Weigh the PLA plastics, pigments and additives respectively according to the formula of the above-mentioned 3D printing PLA consumables;

[0041] (2) Prepare the mixture

[0042] Put the PLA plastics, pigments and additives weighed in step (1) into a high-speed mixer and mix for 5-20min, and mix evenly to obtain a mixture;

[0043] (3) Preparation of PLA color plastic pellets

[0044] Add the mixture obtained in step (2) into a twin-screw extruder, and couple extruding to obtain PLA colored plastic pellets;

[0045] (4) Preparation of 3D printing PLA consumables

[0046] Put the PLA colored plastic pellets obtained in step (3) into a 3D wire making machine to prepare PLA consumable...

Embodiment 1

[0053] The 3D printing PLA consumables of this embodiment, by weight percentage, consist of the following components:

[0054] PLA plastic 99.5%, pigment 0.2%, additive 0.3%.

[0055] Its preparation method is as follows:

[0056] (1) take each component by above-mentioned percentage by weight;

[0057] (2) Put the PLA plastics, pigments and additives weighed in the step (1) into a high-speed mixer and mix for 5-20min, and mix evenly to obtain a mixture;

[0058] (3) Add the mixture obtained in step (2) into a twin-screw extruder, and couple and extrude to obtain PLA colored plastic pellets. The process conditions of the twin-screw extruder are: the extrusion temperature is 200-230°C, The aspect ratio of the twin-screw extruder is 40:1-52:1, and the speed of the twin-screw extruder is 300-550rpm;

[0059] (4) Put the PLA colored plastic pellets obtained in step (3) into a 3D wire making machine to prepare PLA consumables for 3D printing.

Embodiment 2

[0061] The 3D printing PLA consumables of this embodiment, by weight percentage, consist of the following components:

[0062] PLA plastic 99.4%, pigment 0.3%, additive 0.3%.

[0063] Its preparation method is as follows:

[0064] (1) take each component by above-mentioned percentage by weight;

[0065] (2) Put the PLA plastics, pigments and additives weighed in the step (1) into a high-speed mixer and mix for 5-20min, and mix evenly to obtain a mixture;

[0066] (3) Add the mixture obtained in step (2) into a twin-screw extruder, and couple and extrude to obtain PLA colored plastic pellets. The process conditions of the twin-screw extruder are: the extrusion temperature is 200-230°C, The aspect ratio of the twin-screw extruder is 40:1-52:1, and the speed of the twin-screw extruder is 300-550rpm;

[0067] (4) Put the PLA colored plastic pellets obtained in step (3) into a 3D wire making machine to prepare PLA consumables for 3D printing.

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Abstract

The invention belongs to the field of 3D printers and provides a 3D printed PLA consumable and a preparation method thereof. The 3D printed PLA consumable is prepared from the following raw materials in percentage by weight: 99.3-99.7% of PLA plastic, 0.1-0.3% of pigments and 0.2-0.4% of auxiliaries. The preparation method comprises the following steps: weighing the components in percentage by weight; uniformly mixing the weighed components to obtain a mixture; adding the obtained mixture into a double screw extruder; coupling and extruding to obtain PLA colored plastic particles; and then adding the PLA colored plastic particles into a 3D twine machine to prepare the 3D printed PLA consumable. According to the 3D printed PLA consumable, a high-quality, environment-friendly and naturally degradable PLA product is manufactured by utilizing PLA plastic on the premise that the environment-friendly degrading advantage of the PLA plastic is not changed, and the preparation method is simple in step, easy to control and low in cost.

Description

technical field [0001] The invention belongs to the field of 3D printers, in particular to a 3D printing PLA consumable and a preparation method thereof. Background technique [0002] 3D printing technology is a revolutionary industrial molding technology. Raw materials can be directly formed by 3D printers. It is based on a digital model file, using powdered metal or plastic and other bondable materials, through layer-by-layer printing. The technology of constructing objects does not need to go through the manufacture of molds, which saves the time and cost of mold manufacturing. With the rapid development of 3D printing technology, its requirements for materials are also rapidly increasing. The existing 3D printing consumables are mainly PLA plastic ( Polylactic acid), ABS, nylon618, PVA, etc. Among them, since PLA plastic is a new type of biodegradable material, it is made of starch raw materials proposed by renewable plant resources (such as corn), and the starch raw mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04B29C47/92B29C67/24B33Y70/00B29C48/92
Inventor 吴錬楷
Owner LIFENG NEW MATERIAL TECH SHENZHEN
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