Ultraviolet light crosslinked polymer material used for 3D printing, and preparation method and application thereof

A cross-linked polymer, 3D printing technology, used in 3D object support structures, manufacturing tools, additive manufacturing, etc., can solve problems such as poor heat resistance and rigidity, limit the scope of application, etc., to achieve chemical resistance and mechanical strength. Improved, broad application prospects, wide-ranging effects

Active Publication Date: 2014-09-10
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, such thermoplastic resins are usually polymers with a linear structure, and the printed products have poor heat resistance and rigidity, which limits their application range

Method used

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  • Ultraviolet light crosslinked polymer material used for 3D printing, and preparation method and application thereof
  • Ultraviolet light crosslinked polymer material used for 3D printing, and preparation method and application thereof
  • Ultraviolet light crosslinked polymer material used for 3D printing, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] 3D printing product A prepared by ultraviolet light crosslinking polymer composition for 3D printing and materials prepared therefrom

[0056] 1) 100 parts by weight of polyethylene (PE, with a weight average molecular weight of 100,000), 1 part of UV crosslinking agent 1173 (2-hydroxyl-2-methyl-1-phenylacetone), 0.2 part of anti- Oxygen agent 1010, 15 parts of micron calcium carbonate powder, 2 parts of lead chrome yellow are mixed evenly with a single-screw extruder, extruded and processed into filaments with a diameter of 2mm, and the diameter error is within 5%. Single-screw extrusion The diameter of the extruder screw is 70mm, the ratio of length to diameter is 20: l, the temperature of the extruder is set as follows: 185-195°C, 190-200°C, 195-205°C, 200-210°C, 195-205°C, the die head The temperature is 215-225°C.

[0057] 2) Feed the filament obtained in step 1) into the nozzle through the wire feeding mechanism of the UPRINT3D printer, heat and melt in the nozzl...

Embodiment 2

[0060] 3D printing product B prepared from ultraviolet light crosslinking polymer composition for 3D printing and materials prepared therefrom

[0061] 1) With 100 parts by weight of polyvinyl chloride (PVC, the weight-average molecular weight is 70,000), 3 parts of UV crosslinking agent 184 (1-hydroxycyclohexyl phenyl ketone), 0.5 part of antioxidant 1010, 10 parts of nano-Ag powder, 5 parts of cadmium red, mixed evenly with a single-screw extruder, extruded into filaments with a diameter of 2mm, the diameter error is within 5%, and the screw diameter of the single-screw extruder is 70mm , the length-to-diameter ratio is 20:l, the extruder temperature is set as follows: 185-195°C, 190-200°C, 195-205°C, 200-210°C, 195-205°C, die head temperature 215-225°C .

[0062] 2) Feed the filament obtained in step 1) into the nozzle through the wire feeding mechanism of the UPRINT3D printer, heat and melt in the nozzle, the nozzle moves along the section profile of the part and the fill...

Embodiment 3

[0065] 3D printing product C prepared by ultraviolet light crosslinking polymer composition and its prepared material for 3D printing

[0066] 1) 100 parts by weight of polyamide (PA, with a weight average molecular weight of 50,000), 0.5 parts of UV crosslinking agent 907 (2-methyl-2-(4-morpholinyl)-1-[4- (methylthio) phenyl]-1-acetone), 0.8 part of antioxidant 1096, 5 parts of nano Fe 3 o 4 Powder, 3 parts of iron blue, mixed evenly with a single-screw extruder, extruded and processed into filaments with a diameter of 2mm, the diameter error is within 5%, the screw diameter of the single-screw extruder is 70mm, and the aspect ratio is 20: l, the temperature of the extruder is set as follows: 185-195°C, 190-200°C, 195-205°C, 200-210°C, 195-205°C, and the die head temperature is 215-225°C.

[0067] 2) Feed the filament obtained in step 1) into the nozzle through the wire feeding mechanism of the UPRINT3D printer, heat and melt in the nozzle, the nozzle moves along the sectio...

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Abstract

The invention relates to an ultraviolet light cross-linked polymer material used for 3D printing, and a preparation method and an application thereof. Raw materials of the material comprise, by weight, 100 parts of polymer resin, 0.5-5 parts of an ultraviolet light cross-linking agent, 0.1-0.5 parts of an antioxidant, 1-20 parts of powder, 1-10 parts of a pigment and 0-20 parts of other assistant. The light cross-linking agent absorbs ultraviolet lights with specific wavelengths under ultraviolet light irradiation to generate high molecular chain free radicals, so a series of a rapid polymerization reaction is generated to the polymer resin crosslink in a 3D printing process in order to form a three-dimensional net structure. The heat resistance, the chemical corrosion resistance and the mechanical strength of the cross-linked polymer material are greatly improved, so the polymer resin has a wide application prospect in 3D printing materials.

Description

technical field [0001] The invention relates to a material for 3D printing and its preparation method and application, in particular to an ultraviolet cross-linked polymer material for 3D printing and its preparation method and application. Background technique [0002] In the past two decades, 3D printing technology, as an emerging technology in the field of rapid prototyping, has developed very rapidly and has been applied in aerospace, biomedicine, national defense, engineering education, new product development and other fields. 3D printing technology, also known as additive manufacturing technology, is different from the traditional method of removing materials and processing. It directly manufactures products by accumulating materials layer by layer. 3D printing technology uses 3D CAD models to quickly and accurately manufacture complex structural parts on one device, thereby realizing "free manufacturing", solving the limitations of difficult or impossible processing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L27/06C08L77/00C08L69/00C08L67/02C08L55/02C08K13/02C08K5/134C08K5/526C08K3/26C08K3/08C08K3/22C08K3/34B29C47/92B29C67/00B29C35/08B29C48/92
CPCB29C47/92B29C47/0014B29C47/6087B29C48/625B29C48/05B29C48/92B29C2948/92704C08K13/02B29C35/0805B29C64/112B29C2035/0827C08K3/08C08K3/22C08K3/26C08K3/346C08K5/101C08K5/132C08K5/378C08K5/5397C08K2003/0806C08K2003/2227C08K2003/2244C08K2003/2275C08K2003/265C08K2201/011C08L2201/08C08L2312/06C08L23/06C08L27/06C08L77/00C08L69/00C08L67/02C08L55/02
Inventor 朱唐沈衡郭靖赵宁徐坚孙文华董金勇李春成符文鑫林学春马永梅
Owner INST OF CHEM CHINESE ACAD OF SCI
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