Polypropylene composite material capable of realizing 3D (three-dimensional) printing and preparation method thereof

A composite material and 3D printing technology, applied in the field of 3D printing, can solve problems such as the limitations of 3D printing materials, and achieve the effects of simple production process, increased toughness, and improved molding dimensional stability.

Inactive Publication Date: 2017-05-10
许家萁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the limitations of 3D printing materials in the prior art, the present invention provides a 3D printable polypropylene composite material and its preparation method

Method used

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  • Polypropylene composite material capable of realizing 3D (three-dimensional) printing and preparation method thereof
  • Polypropylene composite material capable of realizing 3D (three-dimensional) printing and preparation method thereof
  • Polypropylene composite material capable of realizing 3D (three-dimensional) printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Add 200 parts of 800 mesh calcium carbonate into a high-speed mixer, then add 15 parts by weight of stearic acid, mix and stir for modification, the speed of the mixer is 700rpm, the stirring time is 30 minutes, and the stirring temperature is 60°C;

[0034] (2) be that the modified calcium carbonate of step (1) gained and the polypropylene / butyl rubber TPV of 60 parts by weight, the chlorinated polyethylene of the 30% chlorine content of 50 parts by weight and 100 parts by weight The polypropylene with a melt index of 2g / 10min was added to the internal mixer, and melted and blended at 190°C for 8 minutes to obtain the required 3D printing modified polypropylene composite material;

[0035] (3) The shrinkage rate of the modified polypropylene composite material prepared in the step (2) is 0.6%, which is less than 1%, and no warping occurs during the printing process, and stable printing is possible. Similar to commercially available ABS printing materials, the shrin...

Embodiment 2

[0039] (1) Add 50 parts of 10,000-mesh talc powder into a high-speed mixer, then add 2 parts of titanate, mix and stir for modification, the speed of the mixer is 1000 rpm, the stirring temperature is 60°C, and the stirring time is 20 minutes;

[0040] (2) the modified talcum powder of step (1) gained and the polypropylene / ethylene propylene rubber TPV that is 80 parts by weight, the 50% chlorine content chlorinated polyethylene that is 40 parts by weight and 100 parts by weight Polypropylene with a melt index of 10g / 10min was added to the internal mixer, and melted and blended at 180°C for 6 minutes to obtain the required 3D printing modified polypropylene composite material.

[0041] (3) The shrinkage rate of the modified polypropylene composite material prepared in the step (2) is 0.8%, which is less than 1%, and no warpage occurs during the printing process, and stable printing is possible. Similar to commercially available ABS printing materials, the shrinkage rate of ABS...

Embodiment 3

[0045] (1) Add 100 parts of 5000 mesh calcium carbonate into a high-speed mixer, add 5 parts by weight of stearic acid, the mixer speed is 800rpm, the stirring temperature is 50°C, and the stirring time is 50 minutes; 100 parts of 5000 mesh talcum powder Add it to a high-speed mixer, then add 5 parts of titanate, mix and stir for modification, the speed of the mixer is 800rpm, the stirring temperature is 50°C, and the stirring time is 50 minutes;

[0046](2) the modified calcium carbonate of step (1) gained, modified talcum powder and the polypropylene / ethylene propylene rubber TPV of 40 parts, the chlorinated polyethylene of the 40% chlorine content of 60 parts by weight and 100 parts by weight of polypropylene with a melt index of 15 g / 10 min was added to an internal mixer, and melt-blended at 170° C. for 7 minutes to obtain the desired 3D printing modified polypropylene composite material.

[0047] (3) The shrinkage rate of the modified polypropylene composite material prep...

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Abstract

The invention discloses a polypropylene composite material capable of realizing 3D (three-dimensional) printing and a preparation method thereof. The polypropylene composite material is prepared by mixing the following raw material ingredients in parts by weight: 100 parts of polypropylene, 10 to 150 parts of toughening agents, 30 to 300 parts of inorganic filler, 5 to 100 parts of thickening agents and 1 to 30 parts of surfactants, wherein the toughening agents are thermoplastic vulcanized rubber; the inorganic filler is calcium carbonate and / or talcum powder; the thickening agents are chlorinated polyethylene; the surfactants are stearic acid and / or titanate. The preparation method comprises the following steps that firstly, the inorganic filler and the surfactants of the quantities are stirred at high speed; then, a mixture and other ingredients of the quantities are subjected to melt blending; the polypropylene composite material capable of realizing the 3D printing is prepared. The polypropylene composite material has high toughness and low shrinkage, and is a good 3D printing material.

Description

technical field [0001] The invention relates to the field of 3D printing, and furthermore, relates to a 3D-printable polypropylene composite material and a preparation method thereof. Background technique [0002] Three-dimensional printing is a kind of rapid prototyping technology. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. In the past, it was often used to make models in the fields of mold manufacturing and industrial design, and is now gradually being used in the direct manufacture of some products. In particular, some high-value applications (such as hip joints or teeth, or some aircraft parts) already have parts printed using this technology. "3D printing" means the popularization of this technology. Compared with traditional technology, 3D printing technology also has the following advantages: it reduces the cost by abandoning the production line; it g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/22C08L23/16C08L23/28C08K13/06C08K9/04C08K3/26C08K3/34B33Y70/00B33Y10/00
CPCB33Y10/00B33Y70/00C08K2201/003C08L23/12C08L2205/025C08L2205/035C08L2205/06C08L23/22C08L23/286C08K13/06C08K9/04C08K2003/265C08L23/16C08K3/34C08K3/26
Inventor 许家萁
Owner 许家萁
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