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A preparation method of 3D printing wire with functional skin-core structure

A skin-core structure and 3D printing technology, which is applied in the direction of additive processing, can solve problems such as waste, and achieve the effects of improving service life, reducing percolation threshold, and simple and efficient preparation methods

Active Publication Date: 2020-11-03
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adding functional additives is an effective way to realize the functionalization of polymers, but direct melt blending with polymer materials to make various functional materials often wraps most of the functional additives inside the polymer, resulting in waste

Method used

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  • A preparation method of 3D printing wire with functional skin-core structure

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A 3D printing wire with a functional skin-core structure consists of 45 parts of OBC, 50 parts of PLA, and coupling agent coated TiO 2 Makes up 5 servings.

[0023] The preparation method is to carry out according to the following steps:

[0024] (1) 500 g TiO 2 Add 5g of vinyltriethoxysilane coupling agent (WD-20) into the high mixer, keep the rotation speed at 2000 rpm, stir at high speed for 30 min, and the coupling agent coats TiO 2 ;

[0025] (2) Coating 0.5 kg of coupling agent on TiO 2 , 4.5 kg of OBC mixed and then added to the twin-screw extruder for melt blending. The parameters of the twin-screw extruder are: 80°C in the first zone, 90°C in the second zone, 100°C in the third zone, 110°C in the fourth zone, and 110°C in the fifth zone 120°C, 130°C in the sixth zone, 130°C in the seventh zone, 120°C in the eighth zone, 110°C in the ninth zone, 100°C at the die head, and a rotation speed of 200 rpm. Extrude and granulate to obtain TiO 2 / OBC masterbatch; ...

Embodiment 2

[0028] A 3D printing wire with a functional skin-core structure consists of 45 parts of OBC, 50 parts of PLA, and 5 parts of graphene coated with a coupling agent.

[0029] The preparation method is to carry out according to the following steps:

[0030] (1) Add 500 g graphene and 6 g vinyltriethoxysilane (A151) into the high mixer, keep the speed at 2000 rpm, stir at high speed for 30 min, and coat the graphene with the coupling agent;

[0031] (2) Mix 0.5 kg of coupling agent-coated graphene and 4.5 kg of OBC and add them into a twin-screw extruder for melt blending. The parameters of the twin-screw extruder are: 80°C in the first zone and 90°C in the second zone , the third zone is 100°C, the fourth zone is 110°C, the fifth zone is 120°C, the sixth zone is 130°C, the seventh zone is 130°C, the eighth zone is 120°C, the ninth zone is 110°C, the die head is 100°C, the rotation speed is 200 rpm, extruding pellets , to obtain graphene / OBC masterbatch;

[0032] (3) Mix 5.0 kg ...

Embodiment 3

[0034] A 3D printing wire with a functional skin-core structure consists of 30 parts of POE, 65 parts of PLA, and 5 parts of carbon black coated with a coupling agent.

[0035] The preparation method is to carry out according to the following steps:

[0036] (1) Add 500g of carbon black and 4g of vinyltrimethoxysilane (A171) into the high mixer, keep the speed at 2000 rpm, stir at high speed for 30min, and coat the carbon black with the coupling agent;

[0037] (2) Mix 0.5 kg of coupling agent-coated carbon black and 3.0 kg of POE and add them into a twin-screw extruder for melt blending. The parameters of the twin-screw extruder are: 75°C in the first zone and 85°C in the second zone , the third zone is 95°C, the fourth zone is 100°C, the fifth zone is 115°C, the sixth zone is 125°C, the seventh zone is 125°C, the eighth zone is 115°C, the ninth zone is 105°C, the die head is 100°C, the rotation speed is 180 rpm, extruding pellets , to obtain carbon black / POE masterbatch;

...

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Abstract

The invention discloses a 3D printed wire rod with a functionalized skin-core structure and a preparation method thereof. The preparation method comprises the following steps: (1) coating a functionalauxiliary agent with a coupling agent; (2) subjecting the functional auxiliary agent coated with the coupling agent and a flexible polymer to twin-screw melt blending to obtain functional masterbatch; and (3) subjecting the functional masterbatch and PLA to single-screw blending extrusion. The 3D printed wire rod obtained in the invention has a skin-core structure; the flexible polymer is used asa skin layer, the PLA is used as a core layer, and the functional auxiliary agent is mainly dispersed in the skin layer and is immobilized on the surface of the device by fusion deposition melting (FDM); and the preparation method is simple and efficient, reduces the percolation threshold of the functional auxiliary agent and realizes multi-functionality of 3D printed devices.

Description

technical field [0001] The invention belongs to a preparation method of a 3D printing wire with a functional skin-core structure. Background technique [0002] 3D printing is a new type of intelligent manufacturing technology. Compared with traditional molding methods, it has the advantages of rapid preparation, fine manufacturing, and high material utilization. Among them, fused deposition modeling (FDM) is the most popular 3D printing technology, which can print polymer materials into devices with complex structures. If the 3D printing device can be functionalized, it will greatly expand the application range of 3D printing. Adding functional additives is an effective way to realize the functionalization of polymers, but direct melt blending with polymer materials to make various functional materials often wraps most of the functional additives inside the polymer, resulting in waste. The invention manufactures the 3D printing wire with a skin-core structure through a spe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L53/00C08L23/08C08L5/08C08K9/10C08K3/22C08K3/04C08K3/32C08K3/38C08J3/22B33Y70/10B33Y70/00
CPCB33Y70/00C08J3/226C08J2367/04C08J2405/08C08J2423/08C08J2453/00C08K9/10C08K2003/2241C08K2003/323C08K2003/387
Inventor 陈庆华杨裕金黄宝铨夏新曙钱庆荣杨松伟肖荔人
Owner FUJIAN NORMAL UNIV
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