A kind of ABS-based nanocomposite material for 3D printing and preparation method thereof

A nano-composite material, 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of difficult steps of ABS consumables, easy shrinkage and brittleness, heating plate falling off, etc., to achieve the best comprehensive dynamic mechanical properties of the interface, avoid agglomeration, impact Strength-enhancing effect

Active Publication Date: 2019-03-19
CHENGDU TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest disadvantage of ABS is that it is easy to shrink and become brittle, and it is also relatively easy to warp. On the other hand, the steps of ABS filament after printing are a bit difficult.
Since this material has the characteristic of shrinking when it is cold, it will partially fall off from the heating plate and hang in the air, causing problems
In addition, if the height of the printed object is very high, sometimes the whole layer will be peeled off
Therefore, ABS materials often cannot be used alone as 3D printing consumables. It is an urgent problem to develop an ABS-based composite material that can eliminate the warpage and brittleness of ABS in the 3D printing process as 3D printing consumables.

Method used

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  • A kind of ABS-based nanocomposite material for 3D printing and preparation method thereof
  • A kind of ABS-based nanocomposite material for 3D printing and preparation method thereof
  • A kind of ABS-based nanocomposite material for 3D printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Weigh 12g of silane coupling agent, 70g of absolute ethanol and 8g of water in parts by weight, mix them evenly to form a solution, then add 10g of nano silica to the above solution at room temperature and soak for 4h, filter and rinse off Dry for later use;

[0037] (2) Dry the modified nano-silica and ABS pellets at 80°C for 8 hours, add them to a high-speed kneader at a weight ratio of 1:30 and mix for 8 minutes at a speed of 300r / min. The screw extruder is prepared into modified nano silica masterbatch;

[0038] (3) Weigh 60g of the above-mentioned modified nano-silica masterbatch, ABS 20g, TPU 20g, polyethylene paraffin 0.6g, SMA3g and ZM-1010 0.6g into the high-speed mixer and mix for 10min at 500r / min For premixing, put the above premix on a twin-screw granulator with a temperature system of 160 / 220 / 220 / 220 / 220 / 220 / 220 / 210℃ (temperature from barrel to head) twin-screw granulator at 60rpm Extrusion granulation is carried out to prepare ABS-based nanocomposite mas...

Embodiment 2

[0041] (1) Weigh 12g of silane coupling agent, 70g of absolute ethanol and 8g of water in parts by weight, mix them evenly to form a solution, then add 12g of nano silica to the above solution at room temperature and soak for 3h, filter and rinse off Dry for later use;

[0042] (2) Dry the modified nano-silica and ABS pellets at 80°C for 8 hours, add them to a high-speed kneader at a weight ratio of 1:30 and mix for 9 minutes at a speed of 200r / min. Use twin screw extruder to prepare modified nano silica masterbatch;

[0043] (3) Weigh 60g of the above modified nano-silica masterbatch, 15g of ABS, 25g of TPU, 0.6g of polyethylene paraffin, SMA3g and 0.6g of ZM-1010 into the high-speed mixer and mix for 9min at 600r / min. For premixing, put the above premix on a twin-screw granulator with a temperature system of 160 / 220 / 220 / 220 / 220 / 220 / 220 / 210℃ (temperature from barrel to head) twin-screw granulator at 60rpm Extrusion granulation is carried out to prepare ABS-based nanocomposite ma...

Embodiment 3

[0046] (1) Weigh 12g of silane coupling agent, 40g of ethanol and 3g of water in parts by weight, mix them evenly to form a solution, then add 12g of nano silica to the above solution at room temperature and soak for 4h, filter, rinse and dry spare

[0047] (2) Dry the modified nano-silica and ABS pellets at 80°C for 8 hours, add them to a high-speed kneader at a weight ratio of 1:30 and mix for 9 minutes at a speed of 200r / min, and then use The twin-screw extruder prepares modified nano-silica masterbatch;

[0048] (3) Add 60g of modified nano-silica masterbatch, 15g of ABS, 25g of TPU, 1.2g of polyethylene paraffin, 5g of SMA and 0.6g of ZM-1010 into the high-speed mixer and mix for 7min at 400r / min. Pre-mixing, the above-mentioned pre-mix is ​​carried out on a twin-screw granulator with a temperature system of 160 / 220 / 220 / 220 / 220 / 220 / 220 / 210°C (temperature from the barrel to the head) with a twin-screw speed of 60rpm Extrusion granulation to prepare ABS-based nanocomposite mas...

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Abstract

The invention discloses an ABS (Acrylonitrile Butadiene Styrene)-based nanocomposite for 3D (Three-dimensional) printing. The nanocomposite is prepared from the following components in parts by weight: 54 to 60 parts of ABS, 4.8 to 9 parts of TPU (Thermoplastic Polyurethane), 4 to 8 parts of modified nanometer silicon dioxide master batch, 0.5 to 0.7 part of plasticizer, 2 to 4 parts of solubilizing agent and 0.5 to 0.7 part of antioxidant. The preparation method comprises three steps: I, performing surface treatment on nanometer silicon dioxide; II, preparing first-grade master batch from the modified nanometer silicon dioxide and ABS particles; III, mixing the first-grade master batch, the ABS, the TPU, the plasticizer, the solubilizing agent and the antioxidant, and adding the mixture into a double-screw extruder for extruding and granulating to obtain the ABS-based nanocomposite. The ABS-based nanocomposite for 3D printing provided by the invention has high impact resistance, high toughness and superior mechanical performance and thermal performance.

Description

Technical field [0001] The invention relates to the technical field of functional polymer materials, in particular to an ABS-based nanocomposite material for 3D printing and a preparation method thereof. Background technique [0002] The preparation of high-performance polymer-based composite materials by blending modification technology has become an important means to improve polymer performance and broaden its application fields. It has important economic and scientific research value and is highly valued by polymer academic and industrial circles. Due to the existence of the special structural framework and surface active groups of nano-silica, it has a better modification effect on polyurethane. In addition, in the research of using nano-materials to modify polyurethane, silica is a more commonly used nano-filler. The polyurethane resin is modified by nano-silica to improve the strength, toughness and heat resistance of the polyurethane resin, and the mechanism of the modif...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C08L55/02C08L75/04C08L23/06C08L35/06C08K9/06C08K3/36C08K5/134C08J3/22B33Y70/00
CPCB33Y70/00C08J3/226C08J2355/02C08J2455/02C08K2201/011C08L55/02C08L2201/08C08L2205/035C08L75/04C08L23/06C08L35/06C08K9/06C08K3/36C08K5/1345
Inventor廖益均吴晓莉王卫生张小山张碧桃邱士安周建军
OwnerCHENGDU TECH UNIV