Preparation method for 3D printed wire rod with functionalized 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 environmental pollution, and reducing the amount of additives

Active Publication Date: 2019-01-01
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

Method used

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  • Preparation method for 3D printed wire rod with functionalized skin-core structure

Examples

Experimental program
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Example Embodiment

[0021] Example 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 with TiO 2 5 parts composition.

[0023] The preparation method is as follows:

[0024] (1) Put 500 g TiO 2 Add 5g of vinyl triethoxy silane coupling agent (WD-20) to the high-mixer together, keep the speed at 2000 rpm, stir at high speed for 30 minutes, and coat the TiO 2 ;

[0025] (2) Coating 0.5 kg of coupling agent with TiO 2 , 4.5 kg OBC is mixed and 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 the fifth zone 120°C, 130°C in six zones, 130°C in seven zones, 120°C in eight zones, 110°C in nine zones, die head 100°C, rotating speed 200 rpm, extrusion granulation to obtain TiO 2 / OBC masterbatch;

[0026] (3) Put 5.0 kgTiO 2 / OBC masterbatch and 5.0 kgPLA are mixed and added...

Example Embodiment

[0027] Example 2

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

[0029] The preparation method is as follows:

[0030] (1) Add 500 g of graphene and 6 g of vinyl triethoxy silane (A151) into the high-mixer, keep the speed at 2000 rpm, stir at high speed for 30 minutes, 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 to the 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. , Three zone 100℃, four zone 110℃, five zone 120℃, six zone 130℃, seven zone 130℃, eight zone 120℃, nine zone 110℃, die head 100℃, rotating speed 200 rpm, extrusion granulation , Get the graphene / OBC masterbatch;

[0032] (3) Mix 5.0 kg graphene / OBC masterbatch and 5.0 kg PLA into a single-screw extruder for processing. The p...

Example Embodiment

[0033] Example 3

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

[0035] The preparation method is as follows:

[0036] (1) Add 500g of carbon black and 4g of vinyltrimethoxysilane (A171) to the high-mixer together, keep the speed at 2000rpm, 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 to the 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. , 95°C in three zones, 100°C in four zones, 115°C in five zones, 125°C in six zones, 125°C in seven zones, 115°C in eight zones, 105°C in nine zones, die 100°C, rotating speed 180 rpm, extrusion granulation , Get carbon black / POE masterbatch;

[0038] (3) Mix 3.5 kg of carbon black / POE masterbatch and 6.5 kg of ...

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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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IPC IPC(8): C08L67/04C08L53/00C08L23/08C08L5/08C08K9/10C08K3/22C08K3/04C08K3/32C08K3/38C08J3/22B33Y70/00
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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