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Ultra-low density polypropylene composite material capable of being used for 3D printing and preparation method thereof.

An ultra-low-density, 3D printing technology, which is applied in the preparation of composite materials and the field of ultra-low-density polypropylene composite materials, can solve the problems of limited use of printed objects, good mechanical properties of ABS, and easy brittle fracture, so as to reduce shrinkage. , improve performance, and speed up the effect of crystallization

Inactive Publication Date: 2014-09-10
温州科力塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

ABS has good mechanical properties, especially high toughness, and is also widely used in industrial-level 3D printing; the disadvantage is that it will produce "bad smell" gas when printing and melting, it is not suitable for offices, studios and other environments, and it is opaque
The advantage of polylactic acid is that it is transparent, has no unpleasant smell when it melts, and is degradable; the disadvantage is that it has poor heat resistance, poor mechanical properties, and especially is prone to brittle fracture, which greatly limits the use of printed objects

Method used

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  • Ultra-low density polypropylene composite material capable of being used for 3D printing and preparation method thereof.
  • Ultra-low density polypropylene composite material capable of being used for 3D printing and preparation method thereof.
  • Ultra-low density polypropylene composite material capable of being used for 3D printing and preparation method thereof.

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Experimental program
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Effect test

Embodiment 1

[0027] Weigh 96.3% of polypropylene, 3% of F-230D, 0.2% of TMB-5, 0.1% of Irganox1010, 0.1% of Igrafos 168, and 0.3% of Negonox DSTP by weight, and put the weighed materials into the high-speed Dry mix in the mixer for 5 minutes, then add to the twin-screw extruder to melt and extrude to granulate. The temperature of the head is 180°C, the rotational speed of the twin-screw extruder is set at 500 rpm, and the pellets are dried and injection-molded on an injection molding machine for sample preparation.

Embodiment 2

[0029] Weigh 86.3% of polypropylene, 10% of talcum powder, 3% of F-230D, 0.2% of TMB-5, 0.1% of Irganox 1010, 0.1% of Igrafos 168, and 0.3% of Negonox DSTP by weight percentage. Put the good material into the high-speed mixer and dry mix it for 5 minutes, then put it into the twin-screw extruder to melt and extrude to granulate. The fourth zone is 190°C, the temperature of the head is 180°C, the speed of the twin-screw extruder is set at 500 rpm, and the particles are dried and injection molded on the injection molding machine for sample preparation.

Embodiment 3

[0031] Weigh 76.3% of polypropylene, 20% of talcum powder, 3% of F-230D, 0.2% of TMB-5, 0.1% of Irganox 1010, 0.1% of Igrafos 168, and 0.3% of Negonox DSTP by weight percentage. Put the good material into the high-speed mixer and dry mix it for 5 minutes, then put it into the twin-screw extruder to melt and extrude to granulate. The fourth zone is 190°C, the temperature of the head is 180°C, the speed of the twin-screw extruder is set at 500 rpm, and the particles are dried and injection molded on the injection molding machine for sample preparation.

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Abstract

The invention relates to an ultra-low density polypropylene composite material capable of being used for 3D printing and a preparation method thereof. The polypropylene composite material comprises the following composition in percentage by weight: 45-98% of polypropylene, 0-20% of a toughening agent, 0-20% of an inorganic filler, 1-10% of expandable microspheres, 0.2-0.5% of a nucleating agent, 0.2-2% of a stabilizing agent and 0-5% of other additives. The preparation method comprises the steps of weighing the raw materials according the percentage by weight, putting the materials into a high-speed mixer and carrying out dry-blending for 3-15 minutes, adding the mixed raw materials into a twin-screw extruder, carrying out melt extrusion, cooling and granulating, wherein the temperature of a first zone, a second zone, a third zone and a fourth zone in the screw cylinder are all 170-190 DEG C, the temperature of the machine head is 170-190 DEG C and the rotation speed of the twin-screw extruder is 100-1000 revolutions per minute. The ultra-low density polypropylene composite material disclosed by the invention has the advantages of low shrinkage, no warping, ultra low density, high rigidity and high toughness and can also be well suitable for 3D printing.

Description

technical field [0001] The invention relates to the field of polypropylene composite materials, in particular to an ultra-low-density polypropylene composite material that can be used for 3D printing, and a preparation method for the composite material. 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 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 provides a high-efficiency and low-cost realization method for parts prototype production and verification of new design ideas. [0003] Currently, the most common 3D printing polymers on the market are ABS...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/16C08L53/00C08L23/08C08K13/02C08K3/34C08K5/134C08K5/526C08K5/372B29C47/92B29C48/92
CPCB29C47/0004B29C47/8815B29C47/0011B29C47/0002B29C47/92C08J9/0061C08J9/32C08J2353/00C08J2423/08C08K3/34C08K5/1345C08K5/372C08K5/526C08K13/02C08L23/12C08L23/14C08L53/00C08L2203/14C08L2205/24C08L23/0815B29C48/02B29C48/022B29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92895
Inventor 刘志马璐宋航
Owner 温州科力塑业有限公司
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