Polypropylene composite material for 3D (Three Dimensional) printing and preparation method thereof
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A composite material and 3D printing technology, applied in the field of polypropylene composite material and composite material preparation, can solve the problems of product deformation and warpage, poor polypropylene toughness, slow crystallization speed, etc. The effect of reducing shrinkage
Active Publication Date: 2014-04-23
CHONGQNG PRET NEW MATERIAL +2
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Problems solved by technology
However, most polypropylene has poor toughness, large shrinkage rate, and slow crystallization speed...
Method used
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Embodiment 1
[0033] Weigh 89.3% of polypropylene, 10% of 6102, 0.2% of TMB-5, 0.1% of Irganox1010, 0.1% of Igrafos168, and 0.3% of Negonox DSTP in a high-speed mixer for 5 minutes, then add Melting extrusion granulation in the twin-screw extruder, where the temperature inside the screw barrel is: 180°C in the first zone, 205°C in the second zone, 220°C in the third zone, 210°C in the fourth zone, 210°C at the head, and the speed of the twin-screw extruder at 500 rpm. After the particles are dried, they are injection molded on an injection molding machine to prepare samples.
Embodiment 2
[0035] Weigh 84.3% of polypropylene, 10% of 6102, 5% of ultra-pure talc, 0.2% of TMB-5, 0.1% of Irganox1010, 0.1% of Igrafos168, and 0.3% of Negonox DSTP in a high-speed mixer Dry mix for 5 minutes, then add to the twin-screw extruder to melt and extrude to granulate. The temperature inside the screw barrel is: 180°C in the first zone, 205°C in the second zone, 220°C in the third zone, 210°C in the fourth zone, and 210°C in the head , The speed of the twin-screw extruder is 500 rpm. After the particles are dried, they are injection molded on an injection molding machine to prepare samples.
Embodiment 3
[0037] Weigh 79.3% of polypropylene, 10% of 6102, 10% of ultra-pure talc, 0.2% of TMB-5, 0.1% of Irganox1010, 0.1% of Igrafos168, and 0.3% of Negonox DSTP in a high-speed mixer Dry mix for 5 minutes, then add to the twin-screw extruder to melt and extrude to granulate. The temperature inside the screw barrel is: 180°C in the first zone, 205°C in the second zone, 220°C in the third zone, 210°C in the fourth zone, and 210°C in the head , The speed of the twin-screw extruder is 500 rpm. After the particles are dried, they are injection molded on an injection molding machine to prepare samples.
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Abstract
The invention discloses a polypropylene composite material for 3D (Three Dimensional) printing and a preparation method thereof. The polypropylene composite material is composed of following raw materials in percentage by weight: 70%-98% of polypropylene, 1%-20% of a transparent toughening agent, 0-10% of inorganic fillers, 0.1%-0.5% of a nucleating agent, 0.2%-2% of a stabilizing agent and 0-5% of other additives. The polypropylene composite material has the advantages that 1 a propylene-based elastic body is used as the toughening agent for processing polypropylene so that the roughness of materials can be improved and the shrinkage rate of the materials is reduced; the transparency is not greatly influenced; a beta nucleating agent is used for accelerating a crystallization speed; the molding speed is improved, the size of a spherical crystal is thinned and the transparency is improved; the density of a crystal region is reduced and the shrinkage rate is reduced; super-pure and superfine talcum powder or calcium sulfate crystal whiskers with a high mesh number and the like are adopted so that the shrinkage rate is reduced and the good transparency is kept. The polypropylene composite material for the 3D printing has the advantages that 1 the comprehensive performance is good; 2 a manner of wholly feeding from a main feeding opening is adopted so that the dispersion effects of the toughening agent, the talcum powder and the like are improved, and the performance of the composite material is further improved.
Description
technical field [0001] The invention relates to a polypropylene composite material, specifically a polypropylene composite material that can be used for 3D printing, and a preparation method of the composite material, belonging to the field of polymer modification and processing. Background technique [0002] Rapid prototyping technology, also known as 3D printing technology, was born in the late 1980s and is a high-tech manufacturing technology based on material accumulation method. It is a revolutionary technology that subverts traditional manufacturing methods, and is hailed as another great invention after the steam engine, computer and the Internet. It integrates mechanical engineering, CAD, reverse engineering technology, layered manufacturing technology, numerical control technology, and material science. It can automatically, directly, quickly and accurately transform design ideas into prototypes with certain functions or directly manufacture parts, thereby It provi...
Claims
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Application Information
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