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A kind of pbs/pbat/cnts material and preparation method thereof for 3D printing

A 3D printing and formulation technology, applied in the field of PBS/PBAT/CNTs materials and their preparation, can solve the problems of toughness and tensile strength to be further improved, and achieve low cost, improved toughness and tensile strength, and good mechanical properties Effect

Active Publication Date: 2016-11-30
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There is a problem of heat shrinkage when pure PBS is directly applied to 3D printing. In addition, the main chain of PBS is composed of aliphatic carbon-oxygen chains, so the toughness and tensile strength need to be further improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. A PBS / PBAT / CNTs material for 3D printing, characterized in that:

[0041] (1) formula according to weight percentage:

[0042] PBS 95.5

[0043] PBAT 3.5

[0044] GMA-ethylene-methyl acrylate terpolymer 0.5

[0045] Carboxylated multi-walled carbon nanotubes 0.5

[0046] Calcium Sulfate Whiskers 0

[0047] (2) Preparation method:

[0048] A. Dry PBS and PBAT in a vacuum oven at 80°C and 40°C for 12 hours respectively;

[0049] B. According to the formula of step (1), weigh the dried PBS, PBAT, GMA-ethylene-methyl acrylate terpolymer, carboxylated multi-walled carbon nanotubes, and calcium sulfate whiskers;

[0050] C. Place the weighed components in a high-speed kneader, keep the speed at 2000 rpm / min, and stir at high speed for 20 minutes;

[0051] D. The terpolymer of PBS, PBAT, GMA-ethylene-methyl acrylate, carboxylated multi-walled carbon nanotubes, and calcium sulfate whiskers that are uniformly mixed are added to the feed port of the single-screw extruder,...

Embodiment 2

[0057] 1. A PBS / PBAT / CNTs material for 3D printing, characterized in that:

[0058] (1) formula according to weight percentage:

[0059] PBS 87

[0060] PBAT 10

[0061] DCP 1

[0062] Single-walled carbon nanotubes 1.5

[0063] Calcium carbonate 0.5

[0064] (2) Preparation method:

[0065] A. Dry PBS and PBAT in a vacuum oven at 80°C and 40°C for 12 hours respectively;

[0066] B. According to the formula in step (1), weigh the dried PBS, PBAT, DCP and calcium carbonate;

[0067] C. Place the weighed components in a high-speed kneader, keep the speed at 5000 rpm / min, and stir at high speed for 15 minutes;

[0068] D. Add uniformly mixed PBS, PBAT, DCP, and calcium carbonate to the feeding port of the single-screw extruder. The parameters of the single-screw extruder are: 90°C for the first zone, 110°C for the second zone, 115°C for the third zone, and 120°C for the fourth zone. ℃, five zone 118 ℃ rotation, the speed is 30rpm / min;

[0069] E. Cool the PBS / PBAT / CNTs w...

Embodiment 3

[0074] 1. A PBS / PBAT / CNTs material for 3D printing, characterized in that:

[0075] (1) formula according to weight percentage:

[0076] PBS 68.5

[0077] PBAT 20

[0078] ADR 8.5

[0079] Aminated SWNTs 2

[0080] Silica 1

[0081] (2) Preparation method:

[0082] A. Dry PBS and PBAT in a vacuum oven at 80°C and 40°C for 12 hours respectively;

[0083] B. According to the formula of step (1), weigh the dried PBS, PBAT, ADR, aminated single-walled carbon nanotubes, and silicon dioxide;

[0084] C. Place the weighed components in a high-speed kneader, keep the speed at 3500 rpm / min, and stir at high speed for 20 minutes;

[0085] D. Add uniformly mixed PBS, PBAT, ADR, aminated single-walled carbon nanotubes, and silicon dioxide to the feeding port of the twin-screw extruder. The parameters of the twin-screw extruder are: 1 zone 80°C, 2 zone 117°C , the third zone is 120°C, the fourth zone is 127°C, the fifth zone is 115°C, and the speed is 40rpm / min;

[0086] E. Cool t...

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Abstract

The invention discloses a PBS (poly butylenes succinate) / PBAT (poly butyleneadipate-co-terephthalate) / CNTs (Carbon Nanotubes) material for 3D printing and a preparation method of the PBS / PBAT / CNTs material. The PBS / PBAT / CNTs material is prepared from the following raw materials by weight percent: 50-96 percent of PBS, 3-40 percent of PBAT, 0.5-10 percent of a compatibilizer, 0.5-5 percent of an enhancer and 0-2 percent of a nucleating agent. The preparation method comprises the steps of drying, material weighing, high-speed kneading, melt extrusion, cooling and drawing, and winding and bundling. According to the PBS / PBAT / CNTs material for 3D printing and the preparation method thereof, the two completely biodegradable materials, PBS and PBAT, are adopted to prepare a polymer material suitable for 3D printing, and compared with a traditional polylactic acid (PLA) wire, the PBS / PBAT / CNTs material is relatively low in printing temperature and relatively good in flexibility and strength.

Description

technical field [0001] The invention belongs to a PBS / PBAT / CNTs material for 3D printing and a preparation method thereof. Background technique [0002] At present, PLA is the most widely used polymer material with biodegradability and biocompatibility in Fused Deposition Rapid Prototyping (FDM) technology. However, when PLA is used for 3D printing, the temperature of the nozzle is generally around 230°C, and the energy consumption is high. It is easy to cause burns to the operator and is not suitable for 3D printers for children. Therefore, the development of new 3D printing materials that are as biodegradable and biocompatible as PLA and can be printed at a lower temperature has become a research hotspot. [0003] Polybutylene succinate (PBS), also known as polybutylene succinate or polybutylene succinate, has a melting point of 105°C, a crystallization temperature of about 61°C, and a relative crystallinity of 40-60%. It is a semi-crystalline resin with complete biodegr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K7/24B29C47/92B29C48/92
Inventor 陈庆华龚建肖荔人夏新曙杨松伟江纬
Owner FUJIAN NORMAL UNIV