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Copolymer nylon 6 composition for 3D printing and preparation method of copolymer nylon 6 composition for 3D printing

A technology of copolymerized nylon and 3D printing, applied in the field of copolymerized nylon 6 composition and its preparation, can solve the problems of inability to apply dental treatment, endanger the safety of patients, trouble patients, etc., achieve good melt processing stability, and ensure printing accuracy. , Eliminate the effect of warping deformation

Active Publication Date: 2016-08-24
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

General fused deposition modeling (FDM) 3D printers are not competent, and the product is prepared at a temperature higher than 280°C. Nylon 6 or nylon 66 melt will be exposed to the air for a long time, discoloration, degradation, emits peculiar smell, etc., and the resulting product cannot be used in dental treatment
In this way, the advantages of personalized customization cannot be reflected, and in severe cases, it will bring various troubles to patients, and even endanger the safety of patients.

Method used

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  • Copolymer nylon 6 composition for 3D printing and preparation method of copolymer nylon 6 composition for 3D printing
  • Copolymer nylon 6 composition for 3D printing and preparation method of copolymer nylon 6 composition for 3D printing
  • Copolymer nylon 6 composition for 3D printing and preparation method of copolymer nylon 6 composition for 3D printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Weigh each raw material according to the following proportions: 89.4 parts by mass of copolymerized PA6, 0.4 parts by mass of Surlyn8920, 8 parts by mass of nano-β-tricalcium phosphate, and 0.2 parts by mass of calcium stearate , the coupling agent KH550 mass parts is 0.7 parts, the antioxidant 1098 mass parts is 0.4 parts, the antioxidant 168 mass parts is 0.6 parts, and the light stabilizer 944 mass parts is 0.3 parts. Add copolymerized PA6, Surlyn8920, nano-β-tricalcium phosphate, calcium stearate, coupling agent KH550, antioxidant 1098, antioxidant 168 and light stabilizer 944 into the mixer in sequence for pre-mixing, and the mixing temperature is 35°C , the rotation speed is 150 rpm, and the mixing time is 4 minutes. The premixed material is fed into the co-rotating parallel twin-screw extruder from the feeder, melted and extruded to pelletize, the screw speed is 180 rpm, and the feeder speed is 30 rpm. The temperature of each section of the extruder is 190-230°C....

Embodiment 2

[0039] Weigh each raw material according to the following proportions: 91.9 parts by mass of copolymerized PA6, 0.8 parts by mass of Surlyn8920, 5 parts by mass of nano-β-tricalcium phosphate, and 0.3 parts by mass of calcium stearate , the coupling agent KH550 mass parts is 0.5 parts, the antioxidant 1098 mass parts is 0.5 parts, the antioxidant 168 mass parts is 0.5 parts, and the light stabilizer 944 mass parts is 0.5 parts. Add copolymerized PA6, Surlyn8920, nano-β-tricalcium phosphate, calcium stearate, coupling agent KH550, antioxidant 1098, antioxidant 168 and light stabilizer 944 into the mixer in sequence for pre-mixing, and the mixing temperature is 30°C , the rotation speed is 200 rpm, and the mixing time is 3 minutes. The pre-mixed material is fed into the co-rotating parallel twin-screw extruder from the feeder, melted and extruded to pelletize, the screw speed is 200 rpm, and the feeder speed is 40 rpm. The temperature of each section of the extruder is 190-230°...

Embodiment 3

[0042] Weigh each raw material according to the following ratio: 94.7 parts by mass of copolymerized PA6, 1.2 parts by mass of Surlyn8920, 2 parts by mass of nano-β-tricalcium phosphate, and 0.5 parts by mass of calcium stearate , the coupling agent KH550 mass parts is 0.3 parts, the antioxidant 1098 mass parts is 0.2 parts, the antioxidant 168 mass parts is 0.4 parts, and the light stabilizer 944 mass parts is 0.7 parts. Add copolymerized PA6, Surlyn8920, nano-β-tricalcium phosphate, calcium stearate, coupling agent KH550, antioxidant 1098, antioxidant 168 and light stabilizer 944 into the mixer in sequence for pre-mixing, and the mixing temperature is 40°C , the rotation speed is 300 rpm, and the mixing time is 5 minutes. The pre-mixed material is fed into the co-rotating parallel twin-screw extruder from the feeder, melted and extruded to pelletize, the screw speed is 220 rpm, and the feeder speed is 50 rpm. The temperature of each section of the extruder is 190-230°C. Th...

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Abstract

The invention discloses a copolymer nylon 6 composition for 3D printing. The copolymer nylon 6 composition comprises, by mass, 89.4-94.7 parts of copolymer nylon 6, 0.4-1.2 parts of nylon 6 nucleating agent, 2-8 parts of nylon 6 melt processing stabilizer, 0.2-0.5 part of lubricating agent, 0.3-0.7 part of coupling agent, 0.6-1.1 parts of antioxidant and 0.3-0.7 part of light stabilizer. The invention further provides a preparation method of the copolymer nylon 6 composition for 3D printing. The copolymer nylon 6 composition for 3D printing is excellent in mechanical performance, fatigue resistance and melt processing stability.

Description

technical field [0001] The invention relates to the field of polymer materials and their molding processing, in particular to a copolymerized nylon 6 composition for 3D printing and a preparation method thereof. Background technique [0002] China is gradually becoming rich and powerful, people's lifestyle and diet structure have undergone fundamental changes, and oral diseases have shown explosive growth. Traditional treatment methods are difficult to meet the treatment and health care needs of various oral diseases, and oral diseases need personalized treatment. 3D printing technology can meet the needs of personalized treatment and has great potential in the development of oral medical products. [0003] In August 2014, the US company IDTechEx announced the research results and predicted that the market value of 3D printer demand in the medical product market will reach 6 billion US dollars by 2025, of which the market value of oral medical products will account for 867 ...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L23/08C08K13/02C08K3/32C08K5/098C08K5/544C08K5/20C08K5/526C08K5/3492B29B9/06
CPCB29B9/06C08L77/02C08L2203/02C08L23/0869C08K13/02C08K2003/325C08K5/098C08K5/544C08K5/20C08K5/526C08K5/3492
Inventor 杨军忠任力王迎军
Owner SOUTH CHINA UNIV OF TECH