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3D printing wire of rABS/SEBS-g-MAH and preparation method of 3D printing wire

A 3D printing and wire technology, applied in the direction of additive processing, etc., can solve the problems of 3D printing wire materials such as adverse effects of post-printing products, achieve obvious toughening effect, high mechanical properties of materials, and improve the effect of melt strength

Active Publication Date: 2020-05-05
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This has a bad effect on the molding of 3D printing wire and the printing of later products

Method used

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  • 3D printing wire of rABS/SEBS-g-MAH and preparation method of 3D printing wire
  • 3D printing wire of rABS/SEBS-g-MAH and preparation method of 3D printing wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a rABS / SEBS-g-MAH 3D printing filament and a preparation method thereof.

[0027] Weigh the dried rABS 80% and SEBS-g-MAH 20% according to the weight ratio.

[0028] Preparation method: mix rABS and SEBS-g-MAH according to the above ratio, then mix in a high-speed mixer for 300s, and then use a balanced three-screw extruder for melt blending, and the melting temperature of each section is from zone 1 to zone 9 Sequentially set to 100°C-140°C-170°C-190°C-210°C-190°C-170°C-140°C-100°C, the screw speed is 50 rpm, the amplitude is 0.8mm, the vibration frequency is 6Hz, the fifth The feeding area is connected to a single-screw extruder, and the temperature of the extruder is set at 210°C-210°C-210°C-210°C. After traction, cooling, air drying, and winding, the above-mentioned rABS / SEBS-g-MAH monofilament can be obtained , The wire diameter is controlled at 1.7±0.1mm.

Embodiment 2

[0030] As a comparative example of Example 1, this example provides a rABS / SEBS-g-MAH blend and its preparation method without vibration.

[0031] Weigh the dried rABS 80%, SEBS-g-MAH 20% by weight

[0032] Preparation method: mix rABS and SEBS-g-MAH according to the above ratio, then mix in a high-speed mixer for 300s, and then use a balanced three-screw extruder for melt blending, and the melting temperature of each section is from zone 1 to zone 9 Sequentially set to 100°C-140°C-170°C-190°C-200°C-190°C-170°C-140°C-100°C, the screw speed is 50 rpm, no vibration is applied, and the feeding in the fifth zone is connected to a single screw Extruder, the temperature of the extruder is set at 210°C-210°C-210°C-210°C, after traction, cooling, air drying, and winding, the above-mentioned rABS / SEBS-g-MAH monofilament can be obtained, and the diameter of the filament is controlled at 1.7±0.1mm.

Embodiment 3

[0034] As a comparative example of Example 1, this example provides a rABS / SEBS blend and a preparation method thereof.

[0035] Weigh the dried rABS 80%, SEBS 20% by weight

[0036] Preparation method: mix rABS and SEBS according to the above ratio, then mix in a high-speed mixer for 300s, and then use a balanced three-screw extruder for melt blending. The melting temperature of each section is set to 100 from zone 1 to zone 9. ℃-140℃-170℃-190℃-200℃-190℃-170℃-140℃-100℃, the screw speed is 50 rpm, the amplitude is 0.8mm, the vibration frequency is 6Hz, the fifth area is feeding and receiving Single-screw extruder, the temperature of the extruder is set at 210°C-210°C-210°C-210°C, after traction, cooling, air drying, and winding, the above-mentioned rABS / SEBS monofilament can be obtained, and the diameter of the filament is controlled at 1.7± 0.1mm.

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Abstract

The invention belongs to the field of recycling of high molecular materials, and particularly relates to a 3D printing wire of regenerative rABS / SEBS-g-MAH and a preparation method of the 3D printingwire. The preparation method comprises the steps of firstly blending rABS and SEBS-g-MAH to obtain a blend, then carrying out reaction extrusion under the vibration condition of a balanced three-screwdynamic extruder, and sequentially carrying out traction, cooling, air drying and winding on the blend to obtain the 3D printing wire. According to the preparation process of the 3D printing wire, acompatilizer does not need to be added, and the SEBS-g-MAH reacts with the rABS containing terminal hydroxyl, so that the toughening of the SEBS-g-MAH with good two-phase interface compatibility is realized, and the melt strength of the material is improved; in addition, the vibration force field is utilized in the preparation process to overcome the problem that it is difficult for the SEBS-g-MAHto disperse uniformly in common processing, so that the shearing dispersion mixing effect on the SEBS-g-MAH is better and the SEBS-g-MAH can exist in a dispersed phase with smaller size, therefore, the toughening effect is obvious, the material mechanical property is high, and the impact toughness and ductility of the obtained blend are greatly improved; and not only is the application market ofthe recycled materials expanded, but also the obtained 3D printing wire has wide development prospects.

Description

technical field [0001] The invention belongs to the field of recycling and reuse of polymer materials, and in particular relates to a rABS / SEBS-g-MAH 3D printing wire and a preparation method thereof. Background technique [0002] Polyacrylonitrile-butadiene-styrene (ABS) copolymer is an engineering plastic widely used in electronic products, mechanical parts and even daily necessities. It has a wide processing window, rich application scenarios, and relatively low cost, so it has always been valued by the plastic raw material market. In addition, it also occupies a certain proportion in the emerging market of 3D printing consumables. In recent years, the increasing price of plastic raw materials brought about by the increasing shortage of petroleum resources has forced people to turn their goals to how to effectively make waste ABS into recycled products with excellent performance. However, the recycling of waste ABS has problems such as molecular weight decrease, melt th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/05C08L55/02C08L51/00B33Y70/00
CPCB33Y70/00B29C48/05C08L55/02C08L2207/20C08L51/006
Inventor 何和智湛志明冯彦洪殷小春瞿金平
Owner SOUTH CHINA UNIV OF TECH