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Modified polylactic acid 3D printing material based on ABS recycled materials

A 3D printing and polylactic acid technology, which is applied in the field of modified polylactic acid 3D printing materials and its preparation, can solve the problems of poor flexibility and reduced toughness of polylactic acid resin, and achieve improved impact strength, elongation at break, and production costs Low, the effect of reducing product cost

Active Publication Date: 2016-10-12
山西阳宸中北科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to simultaneously overcome the problem of reduced toughness of ABS recycled recycled materials and the defect of poor flexibility of polylactic acid resin, and provide a modified polylactic acid 3D based on ABS recycled recycled materials that has improved impact strength and elongation at break. printing material

Method used

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  • Modified polylactic acid 3D printing material based on ABS recycled materials

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In parts by mass, weigh 55 parts of polylactic acid resin dried at 70°C for 10 hours in a vacuum oven, 30 parts of recycled ABS materials, 10 parts of ABS high rubber powder (60% glue content), maleic anhydride grafted 5 parts of ABS (ABS-g-MAH, MAH grafting rate 3%), premixed by a high-speed mixer at a speed of 1000rpm for 6 minutes, melted and kneaded the premixed material with a twin-screw extruder, and extruded lines After being cooled in a water tank, the pellets were pelletized by a pelletizer to obtain the composition pellets. The five-stage heating temperature of the barrel of the twin-screw extruder was set to 170, 185, 195, 205, and 210°C respectively, the temperature of the head was set to 215°C, and the screw speed was 100rpm.

[0028] The obtained composition particles were vacuum-dried, melted and extruded with a single-screw extruder, drawn and shaped into a 3D printing filament with a diameter of 1.75 mm. The five-stage heating temperature of the barrel...

Embodiment 2

[0031]In terms of parts by mass, weigh 45 parts of polylactic acid resin, 35 parts of ABS recycled materials, 13 parts of SBS, and SBS grafted with maleic anhydride (SBS-g-MAH, MAH Graft rate 4%) 7 parts, after premixing 8min with the rotating speed of 800rpm by high-speed mixer, the premixture is melted and kneaded with twin-screw extruder, and after the extruded lines are cooled by water tank, they are processed by pelletizer Pelletize to obtain composition granules. The five-stage heating temperature of the barrel of the twin-screw extruder was set to 175, 190, 200, 210, and 215°C respectively, the temperature of the head was set to 220°C, and the screw speed was 80rpm.

[0032] The obtained composition particles were vacuum-dried, melted and extruded with a single-screw extruder, drawn and shaped into a 3D printing filament with a diameter of 1.75 mm. The five-stage heating temperature of the barrel of the single-screw extruder was set to 180, 190, 200, 205, and 210°C res...

Embodiment 3

[0035] In terms of parts by mass, 65 parts of polylactic acid resin, 25 parts of ABS recycled materials, 7 parts of SEBS, and SEBS grafted with glycidyl methacrylate (SEBS-g- GMA, GMA graft rate 2%) 3 parts, after premixing 10min with the rotating speed of 600rpm through the high-speed mixer, the premix is ​​melted and kneaded with the twin-screw extruder, and the extruded lines are cooled by the water tank The pelletizer pelletizes to obtain the composition pellets. The five-stage heating temperature of the barrel of the twin-screw extruder was set to 170, 180, 190, 200, and 205°C respectively, the temperature of the head was set to 210°C, and the screw speed was 60rpm.

[0036] The obtained composition particles were vacuum-dried, melted and extruded with a single-screw extruder, drawn and shaped into a 3D printing filament with a diameter of 1.75 mm. The five-stage heating temperature of the barrel of the single-screw extruder was set to 170, 180, 190, 195, and 200°C respe...

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Abstract

The invention relates to a modified polylactic acid 3D printing material based on ABS recycled materials. The material is a composition material formed by melt-blending 40-70 parts of polylactic resin, 20-40 parts of ABS recycled materials, 7-13 parts of flexibilizer and 3-7 parts of compatilizer. ABS recycled materials and polylactic acid are combined to serve as 3D printing materials, on one hand, waste ABS plastic is recycled and pollution and damage to the ecological environment are reduced; on the other hand, the 3D printing materials are used in cooperation with thermoplastic elastomer and compatilizer, so the shock strength and elongation at break of polylactic acid are improved, production cost of products is reduced, and the application range of polylactic acid as the 3D printing material is widened.

Description

technical field [0001] The invention belongs to the technical field of recovery and reuse of polymer materials, and relates to a modified polylactic acid 3D printing material based on recovery and reuse of ABS materials and a preparation method thereof. Background technique [0002] 3D printing, also known as rapid prototyping technology, has a history of 30 years. It is a non-mold printing technology based on the material accumulation method. Bondable materials are built up layer by layer to form a solid prototype. 3D printing has the characteristics of fast and precise, fully reproducible three-dimensional effects and the integration of design and manufacturing. It has been widely used in the fields of medical treatment, industrial modeling, scientific research and archaeology, architectural design, electronic devices and vehicles. [0003] The technologies used in 3D printing mainly include selective laser sintering, stereolithography, fused deposition modeling and layer...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L55/02C08L53/02C08L51/00B33Y70/00
CPCB33Y70/00C08L67/04C08L2205/025C08L2205/035C08L2205/08C08L55/02C08L53/02C08L51/006C08L53/025
Inventor 白培康宋平李玉新赵占勇
Owner 山西阳宸中北科技有限公司
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