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Polypropylene for 3D printing, polyethylene composite consumable and preparation method thereof

A 3D printing, polypropylene technology, applied in the field of polypropylene and polyethylene composite consumables and their preparation, can solve the problem of inability to take into account environmental protection and industrial applications at the same time, 3D products do not have high impact resistance, not suitable for high temperature requirements, etc. problems, to achieve good anti-corrosion effect, increase molding stability, surface stiffness and good anti-scratch properties

Inactive Publication Date: 2014-10-08
广东傲趣三维科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the consumables currently used in FDM, only PLA is environmentally friendly and food-grade. However, PLA has too many shortcomings in various aspects of mechanical and thermal properties, and it cannot take into account both environmental protection and industrial applications.
Although PLA is environmentally friendly, it is not heat-resistant, and the processing temperature is generally 160-200°C, so it is not suitable for industrial high-temperature resistance requirements; moreover, PLA is relatively hard, and the printed 3D products do not have high impact resistance.

Method used

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  • Polypropylene for 3D printing, polyethylene composite consumable and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0044] Using 60% polypropylene, 27% polyethylene, 10% inorganic filler, 2% nucleating agent and 1% tackifier, wherein the inorganic filler in this embodiment is an ultra-pure ultra-thin powder with a diameter of 2000 mesh. Fine nanoscale calcium carbonate is prepared into 3D printing consumables through the following steps:

[0045] ①. Mix 60% polypropylene, 27% polyethylene, 10% calcium carbonate, 2% nucleating agent and 1% tackifier in proportion;

[0046] ② Put the prepared raw materials into the dryer and dry them at a temperature of 90°C-100°C for more than 2 hours to reduce the moisture content of the raw materials to 0.2%-0.5%;

[0047] ③. Put the dried raw materials into a plastic mixer and mix them thoroughly for 30 minutes;

[0048] ④. Add the mixed raw materials together into the twin-screw granulator, heat at a temperature of 190°C-220°C, plasticize and dissolve the raw materials in the screw barrel at high temperature, and then extrude the raw materials at a scre...

Embodiment 2

[0058] Adopt 50% polypropylene, 37% polyethylene, 10% inorganic filler, 2% nucleating agent and 1% tackifier, wherein the inorganic filler of this embodiment selects diameter as 2000 order mica powder, Prepare 3D printing consumables through the following steps:

[0059] ①. Mix 50% polypropylene, 37% polyethylene, 10% calcium carbonate, 2% nucleating agent and 1% tackifier in proportion;

[0060] ② Put the prepared raw materials into the dryer and dry them at a temperature of 90°C-100°C for more than 2 hours to reduce the moisture content of the raw materials to 0.2%-0.5%;

[0061] ③. Put the dried raw materials into a plastic mixer and mix them thoroughly for 30 minutes;

[0062] ④. Add the mixed raw materials together into the twin-screw granulator, heat at a temperature of 190°C-220°C, plasticize and dissolve the raw materials in the screw barrel at high temperature, and then extrude the raw materials at a screw speed of 30-60RPM;

[0063]⑤. After the raw material extrude...

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Abstract

The invention provides a polypropylene for 3D printing and a polyethylene composite consumable. The polypropylene for 3D printing comprises the following components in percentage by mass: 40-80% of polypropylene, 10-40% of polyethylene, 3-15% of inorganic filler, 0.2-3% of nucleating agent and 0.2-1.5% of tackifier. Since the polypropylene and polyethylene composite material are used as the main material of the 3D printing consumable, the 3D printing consumable has favorable surface rigidity, favorable scratch resistance and high safety, does not have the problem of environmental stress cracking, and can be used for printing to obtain the products for various food-level requirements. The water absorptivity in water is only 0.01%, so the 3D printing product has the advantages of no water absorption, high moisture resistance and high surface gloss and can be easily colored. The 3D printing consumable has the advantages of high heat resistance, high impact resistance, excellent bending resistance, excellent corrosion resistance, high voltage resistance and high arc resistance. Thus, the polyethylene composite consumable can be made and printed into food utensils, tableware, medical appliances, medicine equipment, disinfection equipment, electronic products, automobile accessories, infant and mom supplies, sport supplies, packing containers, toys for children and the like, and has wide applicable fields.

Description

Technical field [0001] The invention relates to a 3D printing consumable, specifically a polypropylene and polyethylene composite consumable and a preparation method thereof. Background technique [0002] Currently, there are no polypropylene or polyethylene consumables or filaments used for 3D printing in China for 3D printers based on the FDM principle. Among the consumables currently used in FDM, the only environmentally friendly food-grade one is PLA. However, PLA has too many shortcomings in various aspects of mechanical and thermal properties, making it impossible to take into account both environmental protection and industrial applications. Although PLA is environmentally friendly, it is not heat-resistant. The processing temperature is generally 160-200°C, so it is not suitable for high-temperature resistance requirements in industry. Moreover, PLA is relatively hard, and the printed 3D products do not have high impact resistance. Contents of the invention [000...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/06C08K3/26C08K3/34B29C47/92B29C48/92
CPCB29C47/0066B29C47/0011B29C47/92B29C2947/92609B29C48/0022B29C48/04B29C48/92B29C2948/9259B29C2948/92609B29C2948/92704B29C2948/92923C08L23/12B29C2948/9258C08K2201/003C08K2201/011C08L2201/08C08L23/06C08K2003/265C08K3/34
Inventor 谢劲能祝君
Owner 广东傲趣三维科技有限公司
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