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A kind of preparation method of modified polycarbonate material for 3D printing

A polycarbonate and 3D printing technology, used in additive processing and other directions, can solve the problems of warpage and deformation of printed products, and the inability to print and form polycarbonate materials, so as to improve processing performance, reduce warpage and cracking, and achieve good results. The effect of mechanical properties

Active Publication Date: 2020-06-30
诺思贝瑞新材料科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a modified polycarbonate material for 3D printing in order to solve the technical problem that the polycarbonate material cannot be printed at a temperature below 260°C and the printed product will warp and deform. preparation method

Method used

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  • A kind of preparation method of modified polycarbonate material for 3D printing

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Embodiment 1

[0035] This embodiment provides a method for preparing a modified polycarbonate material for 3D printing, comprising the following steps:

[0036] Dry the polycarbonate at 110°C until the water content does not exceed 0.05%, then cool to room temperature for later use;

[0037] Weigh out the following raw materials in weight parts: 100 parts of general polycarbonate, 20 parts of polycaprolactone, 10 parts of toughening agent, 0.5 part of hindered phenolic antioxidant, 0.2 part of phosphite antioxidant, and The weighed components were stirred and mixed at a speed of 400r / min for 10 minutes to obtain premixed raw materials; the general-purpose polycarbonate was selected from Covestro XT5010, the polycaprolactone selects Capa TM 6500, the toughening agent is methyl methacrylate-styrene-butadiene core-shell copolymer, and the hindered phenolic antioxidant is β-(3,5-di-tert-butyl-4-hydroxybenzene Base) octadecyl propionate, the phosphite antioxidant is three [2,4-di-tert-butyl...

Embodiment 2

[0041] This embodiment provides a method for preparing a modified polycarbonate material for 3D printing, comprising the following steps:

[0042] Dry the polycarbonate at 100°C until the water content does not exceed 0.05%, and then cool it to room temperature for later use;

[0043] Weigh out the following raw materials in parts by weight: 100 parts of general-purpose polycarbonate, 10 parts of thermotropic liquid crystal polymer, 25 parts of polycaprolactone, 12 parts of toughening agent, 2 parts of hydrophobic fumed silica, hindered phenolic anti- 0.3 part of oxygen agent, 0.2 part of phosphite antioxidant, and mix the weighed components at a speed of 100r / min for 20 minutes to obtain premixed raw materials; the general-purpose polycarbonate is Chimei PC- 122, the thermotropic liquid crystal polymer is Celanese A950, the polycaprolactone selects Capa TM 6506, the toughening agent is methyl methacrylate-styrene-butadiene core-shell copolymer, and the hydrophobic fumed ...

Embodiment 3

[0047] This embodiment provides a method for preparing a modified polycarbonate material for 3D printing, comprising the following steps:

[0048] Dry polycarbonate at 120°C until the water content does not exceed 0.05%, then cool to room temperature for later use;

[0049] Weigh out the following raw materials in parts by weight: 80 parts of general-purpose polycarbonate, 20 parts of disc grade polycarbonate, 5 parts of thermotropic liquid crystal polymer, 15 parts of polycaprolactone, 8 parts of toughening agent, hydrophobic gas phase dioxide 2 parts of silicon, 0.5 part of hindered phenolic antioxidant, 0.2 part of phosphite antioxidant, and each weighed component was stirred and mixed at a speed of 600r / min for 15 minutes to obtain a premixed raw material; General polycarbonate chooses Covestro 2405, the disc grade polycarbonate is Covestro CD2005, and the thermotropic liquid crystal polymer is Celanese A900, the toughening agent is methyl methacrylate-butyl acrylate ...

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Abstract

The invention relates to a preparation method of a modified polycarbonate material for 3D printing. The method comprises the following steps: weighing, by weight, 100 parts of polycarbonate, 0-10 parts of a thermotropic liquid crystal polymer, 10-25 parts of polycaprolactone, 8-15 parts of a toughening agent, 0-2 parts of hydrophobic fumed silica, 0.2-0.5 part of a hindered phenolic antioxidant and 0.2-0.5 part of a phosphite antioxidant, mixing above raw materials, adding the obtained mixture into a twin-screw extruder, performing extruding granulation, drying obtained pellets, adding the dried pellets into a single-screw extruder, performing extrusion to obtain a plastic melt, and performing hot water treatment, cold water cooling setting and air drying on the plastic melt to obtain a wire. The method is convenient and economical, and is suitable for mass production, the prepared modified polycarbonate material for 3D printing has the advantages of realization of printing at a temperature of 260 DEG C or less, high tensile strength, high notched impact strength, and no thermal degradation, and products printed by using the material do not warp and have a smooth surface.

Description

technical field [0001] The invention relates to a preparation method of a modified polycarbonate material for 3D printing, belonging to the field of materials for 3D printing. Background technique [0002] 3D printing technology is profoundly changing the process of modern manufacturing. It does not require traditional tools, fixtures and machine tools, but is based on digital model files, using powdered metal or plastic and other bondable materials, through layer-by-layer printing. The technology of constructing objects by printing, which is used in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms and There are applications in other fields. [0003] Polymer materials are the most widely used materials in 3D printing technology, but the most commonly used polymer materials in the field of 3D printing, such as pol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L67/04C08L33/12C08L101/12C08K5/134C08K5/526C08K3/36B33Y70/00
CPCB33Y70/00C08L69/00C08L2201/08C08L2205/025C08L2205/03C08L2205/035C08L2207/53C08L67/04C08L33/12C08K5/1345C08K5/526C08L101/12C08K3/36
Inventor 李振茅伟华
Owner 诺思贝瑞新材料科技(苏州)有限公司
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