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A photosensitive antibacterial biodegradable 3D printing wire and its preparation method

A 3D printing and biodegradable technology, applied in stretch spinning, additive processing, melt spinning, etc., can solve problems such as heat shrinkage defects, low thermal deformation temperature, strength and toughness to be improved, etc., to reduce production. cost, enhanced dimensional stability, and the effect of broadening application fields

Active Publication Date: 2022-04-15
苏州环诺新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, biodegradable polymer materials such as PLA generally have problems such as low heat distortion temperature, strength and toughness that need to be improved, and there are also defects in heat shrinkage, which seriously restricts the development of biodegradable polymer materials for 3D printing.

Method used

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  • A photosensitive antibacterial biodegradable 3D printing wire and its preparation method
  • A photosensitive antibacterial biodegradable 3D printing wire and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] S1: Mix 55 parts of PLA2002D, 10 parts of cellulose nanocrystals, 2 parts of triallyl isocyanurate, and 10 parts of photosensitive color changing powder MC#12 (colorless to purple, Shenzhen Qianbianse New Material Technology Co., Ltd.) , 3 parts of nano-silver, 0.5 parts of light stabilizer 770, 1.5 parts of tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and 2 parts of zinc stearate were put into high-speed Stir in the mixer for 8 minutes to obtain the mixture; put it into a twin-screw extruder for melting and blending, and extrude to obtain mixture slices;

[0037]S2: After dry-blending the polylactic acid slices in S1 and 25 parts of polycaprolactone in a high-speed mixer, spin them through a spinneret on a melt spinning machine, and obtain as-spun fibers by drawing, cooling, and winding;

[0038] S3: The primary fibers in S2 are bundled through a bundler, and then melted and formed by pultrusion molding, cooled, and wound to obtain ...

Embodiment 2

[0041] S1: Mix 50 parts of PLA2002D, 10 parts of cellulose nanocrystals, 3 parts of triallyl isocyanurate, and 8 parts of photosensitive color-changing powder MC#12 (colorless to purple, Shenzhen Qianbianse New Material Technology Co., Ltd.) , 5 parts of nano-zinc oxide, 0.4 parts of light stabilizer 770, 1.5 parts of tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and 2.5 parts of zinc stearate into Stir in a high-speed mixer for 8 minutes to obtain a mixture; put it into a twin-screw extruder for melting and blending, and extrude to obtain mixture slices;

[0042] S2: After dry-blending the polylactic acid slices in S1 and 35 parts of polyhydroxyalkanoate in a high-speed mixer, spin through a spinneret on a melt spinning machine, and obtain as-spun fibers through drafting, cooling, and winding;

[0043] S3: The primary fibers in S2 are bundled by a bundler, and then melted, cooled, and wound by a pultrusion molding process to obtain a 3D pri...

Embodiment 3

[0046] S1: Mix 60 parts of PLA2002D, 12 parts of cellulose nanocrystals, 2.5 parts of triallyl isocyanurate, and 11 parts of photochromic powder MC#12 (colorless to purple, Shenzhen Qianbianse New Material Technology Co., Ltd.) , 3 parts of nano-silver, 0.8 parts of light stabilizer 770, 1.9 parts of tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and 2.1 parts of zinc stearate were put into high-speed Stir in the mixer for 9 minutes to obtain the mixture; put it into a twin-screw extruder for melting and blending, and extrude to obtain mixture slices;

[0047] S2: After dry-blending the polylactic acid slices in S1 and 15 parts of polyhydroxyalkanoate in a high-speed mixer, spin through a spinneret on a melt spinning machine, and obtain as-spun fibers through drafting, cooling, and winding;

[0048] S3: The primary fibers in S2 are bundled by a bundler, and then melted, cooled, and wound by a pultrusion molding process to obtain a 3D printing...

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Abstract

The invention relates to the technical field of polymer materials, in particular to a photosensitive antibacterial biodegradable 3D printing wire and a preparation method thereof. The following parts by weight are included: 50-70 parts of polylactic acid, 0-40 parts of ester biodegradable plastics, 5-15 parts of cellulose nanocrystals, 2-5 parts of crosslinking agent, 2-12 parts of photosensitive color-changing powder , 2-12 parts of nano antibacterial agent, 0.1-1.5 parts of light stabilizer, 0.5-3 parts of antioxidant, and 1-3 parts of lubricant. By making full use of the widely sourced, cheap and renewable cellulose, it can reduce the production cost of biodegradable plastic 3D printing filaments, and can also achieve the purpose of green, low carbon and environmental protection. High strength, high toughness, heat resistance and other characteristics, and the dimensional stability of its end products can be enhanced due to the existence of semi-interpenetrating network structure. With photochromic and antibacterial properties, it is especially suitable for artistic creation in homes, offices, shopping malls and other places.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a photosensitive antibacterial biodegradable 3D printing wire and a preparation method thereof. Background technique [0002] With the rapid development of 3D printing technology, 3D printing products are not limited to bioengineering, civil and architectural engineering, aerospace and other fields, but also begin to enter people's daily life, used to create some living utensils, decorations, DIY artworks Wait. However, 3D printing products often need to meet artistic design requirements such as various colors and shapes in daily life, which puts forward higher requirements for the development of 3D printing materials, and at the same time, it needs to be further improved in terms of degradability, toughness, strength and other properties. promote. [0003] Biodegradable polymer materials, such as polylactic acid (PLA), polyhydroxyalkanoate (PHA), polyglycolic acid (P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L67/02C08L1/04C08K13/02C08K3/08C08K5/3492C08K5/134C08K5/098C08K3/22C08K5/25C08K5/103C08K5/47C08K5/526D01F8/14D01F6/92D01F1/10D01D5/08D01D5/12B29C64/307B33Y40/00B33Y70/10
CPCC08L67/04D01F8/14D01F6/92D01F1/10D01D5/08D01D5/12B29C64/307B33Y40/00B33Y70/10C08K2201/011C08K2003/0806C08L2203/12C08L2205/025C08L2205/03C08L2205/035C08K2003/2296C08K2003/2241C08L2201/06C08L1/04C08K13/02C08K3/08C08K5/34924C08K5/1345C08K5/098C08K3/22C08L67/02C08K5/25C08K5/103C08K5/47C08K5/526
Inventor 曹勇民王少卿曾少华董炜
Owner 苏州环诺新材料科技有限公司
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