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3D printing modified polypropylene composition and preparation method thereof

A polypropylene composition, 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of narrow processing window, slow molding rate, low crystallization temperature, etc., to improve melt strength, increase crystallization temperature and crystallization rate, The effect of improving aesthetics

Pending Publication Date: 2019-08-23
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polypropylene is currently a widely used material in general-purpose plastics, but there are very few examples of it being applied to FDM molding process. slow

Method used

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  • 3D printing modified polypropylene composition and preparation method thereof
  • 3D printing modified polypropylene composition and preparation method thereof
  • 3D printing modified polypropylene composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 75 parts of random copolymerized polypropylene, 0.1 part of nucleating agent, 0.3 part of hyperdispersant, 25 parts of AS resin, 0.5 part of aluminum powder, 2 parts of crosslinking agent, and 0.5 part of heat stabilizer into the high-speed mixer and mix at high speed After 5 minutes, the homogeneously mixed material was added into a twin-screw extruder, mixed and extruded, and cooled to obtain a 3D printing modified polypropylene composition. The extrusion temperatures of each extrusion zone in the twin-screw extruder are 170°C, 175°C, 185°C, 195°C, 205°C, 205°C, 210°C, 210°C, 215°C, 220°C respectively.

[0026] The product performance is shown in Table 1.

Embodiment 2

[0028] Add 80 parts of random copolymerized polypropylene, 0.2 parts of nucleating agent, 0.4 parts of hyperdispersant, 20 parts of AS resin, 1.0 part of aluminum powder, 3.5 parts of crosslinking agent, and 0.5 parts of heat stabilizer into the high-speed mixer and mix at high speed After 5 minutes, the homogeneously mixed material was added into a twin-screw extruder, mixed and extruded, and cooled to obtain a 3D printing modified polypropylene composition. The extrusion temperatures of each extrusion zone in the twin-screw extruder are 165°C, 170°C, 180°C, 190°C, 200°C, 200°C, 205°C, 205°C, 210°C, 215°C respectively. The product performance is shown in Table 1.

Embodiment 3

[0030] Add 85 parts of random copolymerized polypropylene, 0.3 parts of nucleating agent, 0.5 parts of hyperdispersant, 15 parts of AS resin, 1.5 parts of aluminum powder, 5 parts of crosslinking agent, and 0.5 parts of heat stabilizer into the high-speed mixer and mix at high speed After 5 minutes, the homogeneously mixed material was added into a twin-screw extruder, mixed and extruded, and cooled to obtain a 3D printing modified polypropylene composition. The extrusion temperatures of each extrusion zone in the twin-screw extruder are 160°C, 165°C, 175°C, 185°C, 195°C, 195°C, 200°C, 200°C, 205°C, 210°C respectively.

[0031] The product performance is shown in Table 1.

[0032] Table 1: Properties of 3D printing modified polypropylene compositions of Examples 1-3

[0033]

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PUM

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Abstract

The invention discloses a 3D printing modified polypropylene composition and a preparation method thereof. The 3D printing modified polypropylene composition is prepared from the following componentsby weight: 75-85 parts of polypropylene random copolymer, 0.1-0.3 part of a nucleating agent, 0.3-0.5 part of a hyperdispersant, 15-25 parts of AS resin, 0.5-1.5 parts of aluminum powder, 2-5 parts ofa cross-linking agent and 0.5 part of a heat stabilizer. According to the 3D printing modified polypropylene composition provided by the invention, by adding the nucleating agent and cross-linking agent into the system, the crystallization temperature and crystallization rate of the polypropylene material are enhanced, and the melt strength is improved, so that the material can achieve faster andmore stable shaping. At the same time, the metal powder and compound hyperdispersant system are added into the polypropylene matrix to make the metal powder disperse evenly in the polymer and endow the material with metal texture, thus improving the aesthetics of printed products, and further improving the melt strength of the polypropylene composition at the same time.

Description

technical field [0001] The invention relates to the technical field of modified materials, in particular to a 3D printing modified polypropylene composition and a preparation method thereof. Background technique [0002] 3D printing technology is a rapid prototyping device using light curing or paper lamination technology. The object to be printed is modeled by a computer, and then the built three-dimensional model is partitioned layer by layer, and then the physical object is printed layer by layer through a printer. By using different molding materials, 3D printing technology has derived many different molding technologies, such as fused deposition (FDM), selective laser sintering (SLS), gypsum 3D printing (PP), layered entity manufacturing (LOM) , Digital Light Processing (DLP), etc. Among them, the fused deposition molding method is the most important molding method for 3D printing thermoplastic parts. The basic requirements of FDM technology for thermoplastic material...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L25/12C08L23/20C08K13/02C08K5/053C08K5/098C08K3/08C08K5/14C08K5/5425
CPCC08L23/14B33Y70/00C08L2207/14C08K2003/0812C08L2312/08C08L2312/00C08L2205/03
Inventor 杨桂生赵鑫朱敏姚晨光
Owner HEFEI GENIUS NEW MATERIALS
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