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A kind of plastic powder spheroidization method
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A technology of plastic powder and plastic, applied in the field of plastic processing, can solve the problems of deformation, irregular shape of powder material, hollow printing device, etc., and achieve the effect of high promotion value
Active Publication Date: 2016-08-17
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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Problems solved by technology
Plastic powder is the most common 3D printing consumable. It has the advantages of low printing temperature, good adhesion, and simple raw material preparation methods. shape, granular, block or rod, which will cause the printed device to be prone to hollow, deformation, collapse and other phenomena, which cannot meet the industrial precision and strength requirements of the terminal printed device
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Embodiment 1
[0037] The plastic powder spheroidization method of the present embodiment includes:
[0038] a. Take 100 parts of PS material powder,
[0039] b. Add PS powder into 500 parts of toluene, stir and mix to obtain a concentrated solution of PS;
[0040] c. Slowly add the concentrated solution in step b to the dispersant water dropwise, and stir the dispersant at a speed of 850r / min. During this process, the plastic is continuously precipitated in the dispersion and finally a fine plastic powder is obtained;
[0041] d. First, filter the mixed liquid in step c to obtain plastic powder, then rinse with water, and dry to obtain PS powder with high spheroidization rate.
[0042] In this embodiment, the volume of the concentrated plastic solution added in step c does not exceed 20% of the volume of the dispersion.
[0043] Adopt the plastic powder that present embodiment method makes such as figure 1 , 2 shown, where figure 1 For the comparison of PS powder particle size before a...
Embodiment 2
[0045] The plastic powder spheroidization method of the present embodiment includes:
[0046] a. Take 10 parts of PA12 material powder,
[0047] b. Add PA12 powder into 20 parts of solventchloroform, stir and mix to obtain a concentrated solution of PA12;
[0048] c. Slowly add the concentrated solution of step b into the dispersant (methanol) and stir the dispersant at a speed of 1000r / min. During this process, the plastic will continue to precipitate in the dispersion and finally obtain fine plastic powder body;
[0049] d. First filter the mixed liquid in step c to obtain plastic powder, and then rinse with methanol; after drying, PA12 spheroidized powder with high spheroidization rate can be obtained.
[0050] In this embodiment, the volume of the concentrated plastic solution added in step c does not exceed 20% of the volume of the dispersion.
[0051] It should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the pr...
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Abstract
The invention discloses a plastic powder spheroidizing method. The method comprises the steps that a, plastic raw materialpowder to be spheroidized is taken; b, the plastic raw materialpowder is added into solvents, the plastic raw material powder is dissolved, and concentrated solutions of to-be-spheroidized plastic are prepared; c, the concentrated solutions in the step b are added into dispersion liquid, and the plastic powder is gradually precipitated out of the dispersion liquid; d, the plastic powder precipitated out in the step c is cleaned and dried, and a product is obtained, wherein the plastic powder and the dispersion are not dissolved in the dispersion liquid. Solutions of to-be-thinned plastic are prepared firstly, the solutions are added into dispersing agents which are not dissolved with the plastic and the solvents to be intensely agitated, at the moment, plastic originally dispersed into the solvents is continuously precipitated under the action of shear force and surface tension, and finally plastic spheroidizing powder is obtained.
Description
technical field [0001] The invention belongs to the field of plastic processing, and relates to a plastic powder spheroidization method, in particular to a method for preparing 3D printing raw materials by spheroidizing plastic powder. Background technique [0002] 3D printing technology is a kind of additive manufacturing technology. It has the advantages of high material utilization rate, direct printing of products according to design drawings, unlimited design space, and no need for product assembly. It is especially suitable for manufacturing complex structural parts. [0003] At present, 3D printing technology has been widely used in consumerelectronics, automobiles, aerospace, molds, national defense and military industry, industrial design, regenerative medicine and other fields, and countries all over the world have also shown strong interest in 3D printing technology and formulated Relevant strategic planning, such as the "National Advanced Manufacturing Strategic...
Claims
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Patent Type & Authority Patents(China)
IPC IPC(8): B29B9/08B29B9/12
CPCB29B9/08B29B9/12B29B2009/125
Inventor 张代军黎静谭陆西段宣明
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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