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PC/PBT alloy 3D printing material and preparation method thereof

A 3D printing and alloy technology, applied in the direction of additive processing, etc., can solve the problems of low thermal deformation temperature of PBT, achieve the effect of strong adhesion, avoid material deformation and cracking, and strong interlayer adhesion

Inactive Publication Date: 2018-12-28
广东华领智能制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PBT has a low heat distortion temperature, and its application in the field of 3D printing consumables has great limitations.

Method used

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  • PC/PBT alloy 3D printing material and preparation method thereof
  • PC/PBT alloy 3D printing material and preparation method thereof
  • PC/PBT alloy 3D printing material and preparation method thereof

Examples

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preparation example Construction

[0037] In order to achieve the above object, the present invention also provides a preparation method of carbon fiber reinforced PC / PBT alloy material, comprising the following steps:

[0038] (1) Weigh each component according to the mass percentage content of the above PC / PBT alloy material, and dry the weighed PC and PBT at a temperature of 100-150 ° C for more than 4 hours, and other components at 50- Dry at 80°C for more than 2 hours;

[0039] (2) Put the dried PC, PBT, carbon fiber, toughening compatibilizer, lubricant, and antioxidant into a high-speed mixer and mix them at 10-40°C for 5-15 minutes;

[0040] (3) Add the material mixed in step (2) into the hopper of a twin-screw extruder, and obtain the PC / PBT alloy material through melt blending extrusion, water cooling, and air-drying, wherein the twin-screw extruder The temperature settings are: 160-180°C for zone 1; 180-200°C for zone 2; 200-220°C for zone 3; 220-240°C for zone 4; 240-250°C for zone 5; ~270°C; eigh...

Embodiment 1

[0044] Carbon fiber reinforced PC / PBT alloy material, including the following components in mass percentage: PC58.5%, PBT25%, carbon fiber 10%, compatible toughening agent 5%, transesterification inhibitor 0.2%, anti-floating fiber agent 0.3%, antioxidant 0.5%, lubricant 0.5%. The preparation method of this alloy material is as follows:

[0045]The PC and PBT were dried at 120 °C for 4 h, and the remaining components were dried at 75 °C for 2 h. Weigh 5.9kg of PC, 2.5kg of PBT, 1kg of carbon fiber, 0.5kg of compatible toughening agent, 0.5kg of antioxidant, and 0.5kg of lubricant, and then mix them in a high-speed mixer for 10 minutes. The uniformly mixed material is added to the hopper of the twin-screw extruder, and the temperature of each section is controlled at: 160°C in the first zone; 180°C in the second zone; 200°C in the third zone; 220°C in the fourth zone; 240°C in the fifth zone; ; Zone 7 270°C; Zone 8 280°C; Head temperature 270°C. The screw speed is 250r / min, ...

Embodiment 2

[0047] Carbon fiber reinforced PC / PBT alloy material, including the following components in mass percentage: PC50.5%, PBT30%, carbon fiber 10%, compatible toughening agent 8%, transesterification inhibitor 0.2%, anti-floating fiber agent 0.3%, antioxidant 0.5%, lubricant 0.5%. The preparation method of this alloy material is as follows:

[0048] The PC and PBT were dried at 120 °C for 4 h, and the remaining components were dried at 75 °C for 2 h. Weigh 5.1kg of PC, 3kg of PBT, 1kg of carbon fiber, 0.8kg of compatible toughening agent, 0.5kg of antioxidant, and 0.5kg of lubricant, and then mix them in a high-speed mixer for 10 minutes. The uniformly mixed material is added to the hopper of the twin-screw extruder, and the temperature of each section is controlled at: 160 °C in the first zone; 180 °C in the second area; 200 °C in the third area; 20 °C in the fourth area; 240 °C in the fifth area; ℃; 270℃ in the seventh zone; 280℃ in the eighth zone; the temperature of the mach...

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Abstract

The invention discloses a carbon fiber reinforced PC / PBT alloy 3D printing material and a preparation method thereof. The 3D printing material comprises the following raw materials by weight: 60-80% of PC, 10-30% of PBT, 5-20% of carbon fiber, 5-10% of toughening compatibilizer, 0.5-1% of transesterification inhibitor, 0.5-1% of anti-floating agent, 0.5-1% of lubricant and 0.5-1% of antioxidant. The 3D printing material has excellent performances of mechanical strength, heat resistance and corrosion resistance, can satisfy most industrial applications, and is not prone to warpage and crackingin satisfying the fused deposition modeling (FDM) 3D printing process. The dimension stability is significantly improved.

Description

technical field [0001] The invention relates to the technical field of thermoplastic polymer materials, in particular to a PC / PBT alloy 3D printing material and a preparation method thereof. Background technique [0002] With the development of 3D printing in the direction of large-scale and industrialization, it is gradually used in the manufacture of some products after being used to make models in the fields of mold manufacturing and industrial design, especially in jewelry, architecture, industrial design, footwear, automobiles, There are applications in aerospace, dental and medical industries. With the application of 3D printing in the industrial field, the supporting materials need to have higher strength, better toughness, weather resistance and other performance requirements. [0003] Polycarbonate, referred to as PC, not only has outstanding toughness, good transparency, dimensional stability, electrical insulation and comprehensive mechanical properties, but also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L27/02C08L23/08C08K13/06C08K7/06C08J5/06B33Y70/00
CPCB33Y70/00C08J5/06C08J2369/00C08J2423/08C08J2427/02
Inventor 彭锐龙井刘理辉吴俊坤
Owner 广东华领智能制造有限公司
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