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A kind of anti-shock and anti-ultraviolet aging PLA filament material for 3D printing and preparation method thereof

A 3D printing and UV-resistant technology, applied in the direction of additive processing, etc., can solve the problems of poor UV aging resistance and low impact strength, and achieve high impact resistance and high UV aging resistance.

Active Publication Date: 2020-11-13
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a PLA filament for 3D printing with impact resistance and UV aging resistance, which solves the problems of low impact strength and poor UV aging resistance of the existing PLA filament for 3D printing

Method used

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  • A kind of anti-shock and anti-ultraviolet aging PLA filament material for 3D printing and preparation method thereof
  • A kind of anti-shock and anti-ultraviolet aging PLA filament material for 3D printing and preparation method thereof
  • A kind of anti-shock and anti-ultraviolet aging PLA filament material for 3D printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A kind of preparation method of PLA wire material for 3D printing of anti-shock and UV aging resistance of the present invention, such as figure 1 As shown, the specific steps are as follows:

[0061] Step 1, using a high-mixer to mix nano-TiO 2 Dispersed and mixed with azodicarbonamide (AC) to obtain expandable TiO 2 pink;

[0062] Specifically: the nano-TiO 2 Put it into a high-mixer, keep the speed at 800r / min, and add nano-TiO 2 Spray silicone oil on the top, mix at high speed for 30min, so that TiO 2 The surface energy is reduced to obtain fine and highly dispersed TiO that is not easy to agglomerate 2 powder; add azodicarbonamide (AC) in the high mixer afterwards, mix 10min under the same rotating speed, obtain TiO 2 / AC blend, and finally dried in a drying oven at 30°C for 4 hours to obtain highly dispersed expandable TiO 2 powder, the microscopic morphology of the powder is as follows figure 2 shown;

[0063] Among them, TiO 2 , The mass ratio of sili...

Embodiment 2

[0080] A kind of preparation method of PLA filament material for 3D printing of the present invention is resistant to impact and ultraviolet aging, specifically implements according to the following steps:

[0081] Step 1, using a high-mixer to mix nano-TiO 2 Dispersed and mixed with azodicarbonamide (AC) to obtain expandable TiO 2 pink;

[0082] Specifically: the nano-TiO 2 Put it into a high-mixer, keep the speed at 1000r / min, and inject nano-TiO at intervals of 5 minutes 2 Spray silicone oil on the top, mix at high speed for 35min, so that TiO 2 The surface energy is reduced to obtain fine and highly dispersed TiO that is not easy to agglomerate 2 powder; add azodicarbonamide (AC) in the high mixer afterwards, mix 15min under the same rotating speed, obtain TiO 2 / AC blend, and finally dried in a drying oven at 40°C for 3 hours to obtain highly dispersed expandable TiO 2 pink;

[0083] Among them, TiO 2 , The mass ratio of silicone oil to azodicarbonamide (AC) is 8....

Embodiment 3

[0099] A kind of preparation method of PLA filament material for 3D printing of the present invention is resistant to impact and ultraviolet aging, specifically implements according to the following steps:

[0100] Step 1, using a high-mixer to mix nano-TiO 2 Dispersed and mixed with azodicarbonamide (AC) to obtain expandable TiO 2 pink;

[0101] Specifically: the nano-TiO 2 Put it into a high-mixer, keep the speed at 1000r / min, and inject nano-TiO 2 Spray silicone oil on the top, mix at high speed for 40min, so that TiO 2 The surface energy is reduced to obtain fine and highly dispersed TiO that is not easy to agglomerate 2 powder; add azodicarbonamide (AC) in the high mixer afterwards, mix 20min under the same rotating speed, obtain TiO 2 / AC blend, and finally dried in a drying oven at 40°C for 3 hours to obtain highly dispersed expandable TiO 2 pink;

[0102] Among them, TiO 2 , The mass ratio of silicone oil to azodicarbonamide (AC) is 8.8:0.3:0.9;

[0103] Step ...

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Abstract

Disclosed is an impact and ultraviolet aging-resistant PLA filament for 3D printing, including a TiO2 / PBS functional masterbatch resistant to impact and ultraviolet aging, a coupling agent and PLA. The PLA has a mass fraction of 60-89%; the TiO 2 / PBS functional 5 masterbatch has a mass fraction of 10-35%; the coupling agent has a mass fraction of 1-5%; and the sum of the mass fractions of the above components is 100%. The present invention also discloses a method of producing the impact and ultraviolet aging-resistant PLA filament for 3D printing to solve the problem that the existing nano-TiO2 is difficult to be extruded and to disperse in the melting process, and this method improves the impact strength and 0 ultraviolet aging resistance of the PLA filament for 3D printing. TiO2 Silicon oil {High-speed mixing AC Highly-dispersed TiO2 powder High-speedmixing ZnO PBS Expandable Melt blending TiO2 powder+ ZnO / PBS Dryingblowing aid (Melt blending) TiO2 / PBS functional masterbatch Melt-extrusion Impact and UV aging-resistant TiO2 / PBS-modified PLA filament for 3D printing Performance test Application analysis

Description

technical field [0001] The invention belongs to the technical field of 3D printing consumables processing, and in particular relates to a PLA filament material for 3D printing with impact resistance and ultraviolet aging resistance, and also relates to a preparation method of the PLA filament material for 3D printing. Background technique [0002] In recent years, 3D printing technology has become a research hotspot and key field at home and abroad, especially Western developed countries such as Europe and the United States pay special attention to the research and development of 3D printing technology, which promotes the rapid development of 3D printing equipment, materials and technology. The development of 3D printing technology in China is also extremely rapid. The research and development of 3D equipment and technology represented by Xi'an Jiaotong University, Sichuan University and Beijing University of Chemical Technology has attracted domestic and foreign attention, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L67/02C08L83/04C08K3/22C08J9/10B33Y70/10
CPCB33Y70/00C08J9/0061C08J9/0071C08J9/103C08J2203/04C08J2367/04C08J2467/02C08J2483/04
Inventor 贾仕奎王忠朱艳陈立贵付蕾
Owner SHAANXI SCI TECH UNIV