Preparation method for 3D printing support material based on photoinduced reversible micelles

A technology of 3D printing and supporting materials, applied in the field of 3D printing, can solve problems such as inseparable support, affecting the shape of parts, production deviation, etc., to achieve the effect of improving fluidity, not easy to warp products, and good compatibility

Inactive Publication Date: 2018-07-20
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The magic of 3D printers is that they can print complex designs into three-dimensional objects by superimposing layers. However, many people do not know that not all objects can be printed successfully. Some complex models cannot be formed without open support
[0008] Light-curing 3D printing is often used to manufacture complex structural parts. There are often voids and suspended parts in these complex structures. In order to avoid deformation of these voids and suspended parts due to incomplete curing during the rapid printing process Affect the shape of the workpiece and cause deviations in subsequent production

Method used

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  • Preparation method for 3D printing support material based on photoinduced reversible micelles

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Experimental program
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Effect test

Embodiment 1

[0031] The preparation of 3D printing support material based on light-induced reversible micelles, the steps are as follows:

[0032] a. Mix polystyrene microspheres with a particle size of 2-5 μm and sodium lauryl sulfate solution with a mass concentration of 0.25%, disperse ultrasonically for 30-60 minutes, add dibutyl phthalate, swell for 6 hours, and then Add toluene to continue swelling for 5-8 hours, continue to add styrene, divinylbenzene, and dibenzoyl peroxide, and swell for another 12 hours, centrifuge the product, separate, add dichloromethane to the separated microspheres, and extract for 24 hours , washed three times with methanol, filtered, and vacuum-dried at 60°C for 15 hours to obtain hollow porous polymer microspheres;

[0033] The mass ratio of polystyrene microspheres, sodium lauryl sulfate solution, dibutyl phthalate, toluene, styrene, divinylbenzene, and dibenzoyl peroxide is 5:1.5:4:6:5 :0.5:0.2;

[0034] b. In a fluidized bed, spray a crosslinking age...

Embodiment 2

[0039] The preparation of 3D printing support material based on light-induced reversible micelles, the steps are as follows:

[0040] a. Mix polystyrene microspheres with a particle size of 2-5 μm and sodium lauryl sulfate solution with a mass concentration of 0.25%, disperse ultrasonically for 60 minutes, add dibutyl phthalate, swell for 5 hours, and then add toluene Continue to swell for 6 hours, continue to add styrene, divinylbenzene, and dibenzoyl peroxide, and swell for another 15 hours. Centrifuge and separate the product. Add dichloromethane to the separated microspheres, extract for 25 hours, and then use methanol Washing 4 times, filtering, and vacuum drying at 60°C for 14 hours to obtain hollow porous polymer microspheres;

[0041] The mass ratio of polystyrene microspheres, sodium lauryl sulfate solution, dibutyl phthalate, toluene, styrene, divinylbenzene, and dibenzoyl peroxide is 5:1.2:3:6:4 :0.8:0.3;

[0042] b. In a fluidized bed, spray a crosslinking agent ...

Embodiment 3

[0047] The preparation of 3D printing support material based on light-induced reversible micelles, the steps are as follows:

[0048] a. Mix polystyrene microspheres with a particle size of 4 μm and sodium lauryl sulfate solution with a mass concentration of 0.25%, ultrasonically disperse for 51 minutes, add dibutyl phthalate, and swell for 7 hours, then add toluene to continue swelling 6h, continue to add styrene, divinylbenzene, dibenzoyl peroxide, and then swell for 13h, centrifuge and separate the product, add dichloromethane to the separated microspheres, extract for 24h, and wash with methanol for 3 times, filter, and vacuum dry at 60°C for 16 hours to obtain hollow porous polymer microspheres;

[0049] The mass ratio of polystyrene microspheres, sodium lauryl sulfate solution, dibutyl phthalate, toluene, styrene, divinylbenzene, and dibenzoyl peroxide is 8:0.5:4:7:4 :0.7:0.3;

[0050] b. In a fluidized bed, spray a crosslinking agent and hydroxyazobenzene into the hol...

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Abstract

The invention belongs to the technical field of 3D printing and particularly relates to a preparation method for a 3D printing support material based on photoinduced reversible micelles. According tothe preparation method for the 3D printing support material based on the photoinduced reversible micelles, a crosslinking agent and hydroxyazobenzene are sprayed on hollow porous polymer microspheresin a fluidized bed, the surfaces of the polymer microspheres are crosslinked by increasing temperature gradually to introduce azobenzene groups, the microspheres and dimeric surfactant are mixed and frozen and solidified in the microspheres, and the microspheres are made to carry the dimeric surfactant to obtain the support material. According to the preparation method for the 3D printing supportmaterial based on the photoinduced reversible micelles, by means of the manners that the dimeric surfactant is loaded into the hollow microspheres containing the azobenzene groups and a photorheological reversible micelle system is obtained by compounding, the flowability of the supporting material before illumination is increased, the supporting material is made to have the characteristic of rapid response and is taken as the 3D printing supporting material by virtue of the invertible light isomerisation property of the supporting material, meanwhile, the support material has good compatibility with various polymer printing materials, and product warping and other phenomena are not prone to occur.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a preparation method of a 3D printing support material based on light-induced reversible micelles. Background technique [0002] Rapid prototyping technology is a new type of prototyping technology developed in the 1980s. Rapid prototyping is based on the principle of material dispersion and accumulation and the method of layered data processing. The scanner converts the physical model into a three-dimensional digital three-dimensional model, and then the computer divides the original three-dimensional model into a series of layers, and then the nozzle is stacked and formed layer by layer according to the data set by the computer. At present, more than ten kinds of rapid prototyping technologies have been developed, such as laser-based stereolithography (SLA), selective laser sintering (SLS), selective laser melting (SLM), layered solid manufacturing (LOM), etc. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/40C08F212/08B01J13/14B33Y40/00
CPCC08F212/08B01J13/14B33Y40/00C08F212/36
Inventor 陈庆昝航
Owner CHENDU NEW KELI CHEM SCI CO LTD
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