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3D printing polylactic acid /leather powder composite materials and preparation method thereof

A polylactic acid material and 3D printing technology, applied in the field of 3D printing materials and their preparation, can solve problems such as poor toughness, poor heat resistance, and low impact strength, and achieve improved impact strength and heat distortion temperature, high product quality, and production low cost effect

Inactive Publication Date: 2016-06-08
HEILONGJIANG XINDA ENTERPRISE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the defects of low impact strength, poor toughness and poor heat resistance in current 3D printing polylactic acid materials, the present invention proposes a 3D printing polylactic acid / skin powder composite material and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Surface treatment process of skin powder

[0041] Put skin powder and silane coupling agent KBM-403 into a three-necked flask containing an appropriate amount of xylene at a ratio of 50:1, ultrasonicate for 20 minutes, place the system in an oil bath at 120°C for 7 hours, and then distill out xylene under reduced pressure , put the obtained skin powder into a vacuum oven at 120°C for 24 hours, take it out and put it in a closed container for later use.

[0042] (2) 85 parts by weight of polylactic acid, 5 parts of dibutyl alcohol diisocyanate, 5 parts of polyhydrocarbyl acrylate, 1 part of 6000 mesh montmorillonite, 5 parts of skin powder with a particle size of about 40 mesh, 2 parts The silane coupling agent vinyltriethoxysilane (KBE-1003), 5 parts of nano-silica, 0.5 parts of composite antioxidant are added to the torque rheometer, at 180 ° C, the speed of the torque rheometer Under the condition of 50rpm, mix and grind thoroughly for 0.5-1h and then discharge. ...

Embodiment 2

[0047] (1) Surface treatment process of skin powder

[0048] Put skin powder and silane coupling agent KBM-403 into a three-necked flask containing an appropriate amount of xylene at a ratio of 50:1, ultrasonicate for 20 minutes, place the system in an oil bath at 120°C for 7 hours, and then distill out xylene under reduced pressure , put the obtained skin powder into a vacuum oven at 120°C for 24 hours, take it out and put it in a closed container for later use.

[0049] (2) 75 parts by weight of polylactic acid, 5 parts of dibutyl alcohol diisocyanate, 5 parts of polyhydrocarbyl acrylate, 1 part of 6000 mesh montmorillonite, 15 parts of leather powder with a particle size of about 40 mesh, 2 parts The silane coupling agent vinyltriethoxysilane (KBE-1003), 5 parts of nano-silica, 0.5 parts of composite antioxidant were added to the torque rheometer, at 180 ° C, the torque rheometer Under the condition of rotating speed of 50rpm, fully mix and grind for 0.5-1h and then discha...

Embodiment 3

[0054] (1) Surface treatment process of skin powder

[0055] Put skin powder and silane coupling agent KBM-403 into a three-necked flask containing an appropriate amount of xylene at a ratio of 50:1, ultrasonicate for 20 minutes, place the system in an oil bath at 120°C for 7 hours, and then distill out xylene under reduced pressure , put the obtained skin powder into a vacuum oven at 120°C for 24 hours, take it out and put it in a closed container for later use.

[0056] (2) 70 parts by weight of polylactic acid, 5 parts of dibutyl alcohol diisocyanate, 5 parts of polyhydrocarbyl acrylate, 1 part of 6000 mesh montmorillonite, 20 parts of skin powder with a particle size of about 40 mesh, 2 parts The silane coupling agent vinyltriethoxysilane (KBE-1003), 5 parts of nano-silica, 0.5 parts of composite antioxidant are added to the torque rheometer, at 180 ° C, the speed of the torque rheometer Under the condition of 50rpm, mix and grind thoroughly for 0.5-1h and then discharge....

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Abstract

3D printing polylactic acid / leather powder composite materials comprise the components in parts by weight: 70-85 parts of polylactic acid, 1-5 parts of a chain extender, 1-5 parts of a coupling agent, 0.5-1 part of a nucleating agent, 0-25 parts of leather powder, 5-10 parts of a flexibilizer, 1-5 parts of a reinforcing agent, and 0-0.1 part of an antioxidant. According to the 3D printing polylactic acid / leather powder composite materials, an in-situ melt grafting blending technology is utilized, polylactic acid is subjected to modified processing, the toughness, the impact strength and the heat distortion temperature of the polylactic acid are improved to a large extent, a series of 3D printing polylactic acid / leather powder composite materials which can be completely biodegradable are prepared, and thus the polylactic acid can have wider application prospects in 3D printing materials.

Description

technical field [0001] The invention relates to a 3D printing material and a preparation method thereof, in particular to a 3D printing polylactic acid / skin powder composite material and a preparation method thereof. Background technique [0002] 3D printing technology, also known as additive manufacturing technology, is actually an emerging technology in the field of rapid prototyping. It is based on digital model files and uses bondable materials such as powdered metal or plastic. A technique for constructing objects in a manner. The basic principle is additive manufacturing, the technique of adding material layer by layer to generate a three-dimensional solid. At present, 3D printing technology is mainly used in product prototyping, mold manufacturing, art creation, jewelry making and other fields, replacing these traditional fine processing techniques. In addition, 3D printing technology is gradually applied in fields such as medicine, bioengineering, architecture, clo...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L89/06C08L23/08C08K13/02C08K3/36C08K3/26C08K3/34C08K5/5425C08K5/5419B29C47/92B29C48/92
Inventor 于敬阳仇立国马俊杰
Owner HEILONGJIANG XINDA ENTERPRISE GRP
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