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Polypropylene carbonate composite material for 3D printing and preparation method thereof

A polypropylene carbonate and composite material technology, applied in the direction of additive processing, etc., can solve the problems of low strength, limited application range, and low glass transition temperature of PPC, achieve good dimensional stability, and improve interface compatibility , the effect of high mechanical properties

Inactive Publication Date: 2015-06-10
SOUTH CHINA INST OF COLLABORATIVE INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PPC itself has low strength, low glass transition temperature, easy thermal deformation, low melt strength, and poor heat resistance, which limit its application range.

Method used

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  • Polypropylene carbonate composite material for 3D printing and preparation method thereof
  • Polypropylene carbonate composite material for 3D printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Grinding and sieving organic montmorillonite 1.24TL (Nanocor, USA) (400 meshes), and fully drying (the drying temperature is 80°C, and the drying time is 24 hours);

[0044] (2) Polypropylene carbonate (the number-average molecular weight of the polypropylene carbonate is 90,000) is placed in a forced air drying oven at 45°C and fully dried for 48 hours;

[0045] (3) 100 parts by weight of polypropylene carbonate fully dried, 7 parts by weight of 1.24TL, 1 part by weight of p-toluene diisocyanate, 0.5 part by weight of triphenylmethane triisocyanate and 0.5 part by weight of antioxidant 1010, at high speed Mix in mixer for 5 minutes (the rotating speed of high-speed mixer is 750r / min), obtain compound;

[0046] (4) Extrude and wire-draw the mixture through a twin-screw extruder to obtain a 3D printing wire material (that is, a polypropylene carbonate composite material for 3D printing); wherein the screw speed of the twin-screw extruder is 400r / min ; The temperatur...

Embodiment 2

[0049] (1) Grinding and sieving the KH550-modified nano-silica (400 mesh), and fully drying (the drying temperature is 80°C, and the drying time is 24 hours);

[0050] (2) Polypropylene carbonate (the number-average molecular weight of the polypropylene carbonate is 90,000) is placed in a forced air drying oven at 45°C and fully dried for 48 hours;

[0051] (3) 100 parts by weight of fully dried polypropylene carbonate, 3 parts by weight of KH550 modified nano silicon dioxide, 1.2 parts by weight of diphenylmethane diisocyanate, 0.3 parts by weight of dimethyltriphenylmethane tetraisocyanate And 0.5 weight part antioxidant 1010, mixed 5 minutes in high-speed mixer (the rotating speed of high-speed mixer is 750r / min);

[0052] (4) Extrude and wire-draw the mixture through a twin-screw extruder to obtain a 3D printing wire material (that is, a polypropylene carbonate composite material for 3D printing); wherein the screw speed of the twin-screw extruder is 400r / min ; The temper...

Embodiment 3

[0056] (1) Organic montmorillonite 1.34TCN (U.S. NANOCOR company) and light calcium carbonate are pulverized, sieved (the number of meshes is 400 meshes), and fully dried (the drying temperature is 80°C, and the drying time is 24 hours );

[0057] (2) Polypropylene carbonate (the number-average molecular weight of the polypropylene carbonate is 90000) is placed in a blast drying oven at 50°C and fully dried for 48 hours;

[0058] (3) fully dry 100 parts by weight polypropylene carbonate, 5 parts by weight organic montmorillonite 1.34TCN, 20 parts by weight light calcium carbonate, 5 parts by weight styrene-maleic anhydride copolymer (Nantong Rizhisheng Polymer New Material Technology Co., Ltd., SMA-020) and 0.5 parts by weight of antioxidant 168, mixed in a high-speed mixer for 5 minutes (the rotating speed of the high-speed mixer is 750r / min);

[0059] (4) Extrude and wire-draw the mixture through a twin-screw extruder to obtain a 3D printing wire material (that is, a polypr...

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Abstract

The invention belongs to the technical field of a macromolecular material and discloses a polypropylene carbonate composite material for 3D printing and a preparation method thereof. The polypropylene carbonate composite material is prepared from the following raw materials in parts by weight: 100 parts of polypropylene carbonate, 1-40 parts of inorganic particles, 0.5-10 parts of chain extender and 0.1-1 part of antioxidant. The polypropylene carbonate composite material is obtained by means of blending, extrusion and modification; the prepared composite material is high in mechanical property, better in heat-resistant property, biodegradable and better in forming and processing property of 3D printing; meanwhile, the technological process is simple and the production cost is low; printed products have good size stability and high printing precision.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a polypropylene carbonate composite material for 3D printing and a preparation method thereof. Background technique [0002] 3D printing, as the core technology to promote the third industrial revolution, is receiving more and more attention. In the fields of national defense and military, aerospace, industrial model design, product prototype design, biomedicine and other fields, 3D printing technology is gradually changing traditional production methods and lifestyles. At present, the mainstream molding methods of 3D printing include Fused Deposition Modeling (Fused Deposition Modeling, FDM), Stereo Lithography Apparatus (SLA), Selective Laser Sintering (Selective Laser Sintering, SLS) and so on. Compared with metal materials and inorganic non-metallic materials, polymer materials are easier to realize for 3D printing, and have the characteristics of low p...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08K13/06C08K9/04C08K9/06C08K3/34C08K3/26C08K3/22C08K3/36B29C47/92B33Y70/00B29C48/92
CPCC08K2003/2241C08K13/06B29C48/92B29C2948/9258B29C2948/92704C08K3/346C08K3/36C08K5/29C08K9/04C08K9/06C08K2201/011C08K2201/014C08L69/00C08L2201/06C08L2201/08C08L35/06C08K2003/265C08L51/06C08K3/34
Inventor 蒋灿郑华德张明朱祎纬
Owner SOUTH CHINA INST OF COLLABORATIVE INNOVATION
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