3D low-temperature printing material and preparing method thereof

A printing material and low-temperature technology, which is applied in the field of 3D printing materials, can solve problems such as difficult rapid curing molding, nozzle cut-off, and flow, etc., and achieve rapid curing molding, improved heat resistance, and good compatibility.

Active Publication Date: 2018-08-31
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when PEO 3D printing, there will be flow, it is not easy to solidify quickly, and there will be a flow break at the nozzle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 98% of PEO (molecular weight is 1 million), the stabilizer is 7% of PEO, and the plasticizer is 2% of PEO.

[0023] Dry polyethylene oxide PEO at 50°C for more than 4 hours, and dry other components at 50-80°C for more than 2 hours; first put the dried polyethylene oxide and plasticizer into a high-speed mixer in proportion, Stir for 3-5min at -30°C, then add stabilizer and rigid low-temperature melt powder in proportion, and stir for 5-10min at 10-30°C; put the above-mentioned mixed materials into the twin-screw hopper, melt together Mixed extrusion, air cooling, and air drying to obtain the 3D low-temperature printing material, wherein the temperature of the twin-screw extruder is set as follows: Zone 1: 70-80°C; Zone 2: 80-100°C; Zone 3: 100-120°C ℃, zone 4: 90-110℃; zone 5: 80-90℃; head temperature: 70-80℃; screw speed controlled at 200-500r / min. Set the pulling speed of the wire drawing machine to 50-350r / min, and stretch to obtain a wire with a diameter of ...

Embodiment 2

[0025] Weigh 98% of PEO (molecular weight is 1,000,000), stabilizer is 7% of PEO, plasticizer is 2% of PEO, and softening point is 2% of phenolic resin of 80°C.

[0026] Dry polyethylene oxide PEO at 50°C for more than 4 hours, and dry other components at 50-80°C for more than 2 hours; first put the dried polyethylene oxide and plasticizer into a high-speed mixer in proportion, Stir for 3-5min at -30°C, then add stabilizer and rigid low-temperature melt powder in proportion, and stir for 5-10min at 10-30°C; put the above-mentioned mixed materials into the twin-screw hopper, melt together Mixed extrusion, air cooling, and air drying to obtain the 3D low-temperature printing material, wherein the temperature of the twin-screw extruder is set as follows: Zone 1: 70-80°C; Zone 2: 80-100°C; Zone 3: 100-120°C ℃, zone 4: 90-110℃; zone 5: 80-90℃; head temperature: 70-80℃; screw speed controlled at 200-500r / min. Set the pulling speed of the wire drawing machine to 50-350r / min, and str...

Embodiment 3

[0028] Weigh 95% of PEO (molecular weight is 1 million), 5% of phenolic resin with a softening point of 80°C, 7% of PEO as a stabilizer, and 2% of PEO as a plasticizer.

[0029] Dry polyethylene oxide PEO at 50°C for more than 4 hours, and dry other components at 50-80°C for more than 2 hours; first put the dried polyethylene oxide and plasticizer into a high-speed mixer in proportion, Stir for 3-5min at -30°C, then add antioxidant and rigid low-temperature melt powder in proportion, and stir for 5-10min at 10-30°C; put the above-mentioned mixed materials into the twin-screw hopper, melt Blending extrusion, water cooling, and air drying to obtain the 3D low-temperature printing material, wherein the temperature of the twin-screw extruder is set as follows: Zone 1: 70-80°C; Zone 2: 80-100°C; Zone 3: 100-120°C ℃, zone 4: 90-110℃; zone 5: 80-90℃; head temperature: 70-80℃; screw speed controlled at 200-500r / min. Set the pulling speed of the wire drawing machine to 50-350r / min, an...

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Abstract

The invention relates to a 3D low-temperature printing material and a preparing method thereof. The 3D low-temperature printing material comprises a base body material which is composed of polyoxyethylene (PEO) and a rigid low-temperature melt, the mass of PEO in the base body material accounts for 70-100%, the mass of the rigid low-temperature melt accounts for 0-30%, the 3D low-temperature printing material further comprises a stabilizer and a plasticizer, the dosage of the stabilizer accounts for 0.5-1 wt% of the mass of PEO, and the dosage of the plasticizer accounts for 0.1-10 wt% of themass of PEO. Polyoxyethylene serves as the main material, by adding the rigid low-temperature molten polymer, then through blending and extrusion pelletizing, a modified polyoxyethylene material is obtained, and then a wire of which the diameter is 1.75 mm is prepared through an extruder. Compared with the prior art, in the printing process, the material does not flow, and can be quickly cured andformed; meanwhile, the heat resistance of the material can be improved, and the 3D low-temperature printing material is novel and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of 3D printing materials, in particular to a low-temperature 3D printing material and a preparation method thereof. Background technique [0002] Polycaprolactone (PCL) is a semi-crystalline non-toxic polymer with a crystallinity of about 45%, a low glass transition temperature, and a low melting point (about 60 ° C), which can be molded at low temperature. At present, in the 3D industry, the low-temperature printing materials used are mainly PCL, especially the printing materials for 3D printing pens. At present, there are few types of 3D low-temperature printing materials, and it is necessary to expand the types of 3D low-temperature printing materials. Therefore, a low-temperature flexible material other than PCL (PCL is more expensive) can be selected as the base material, and then modified to prepare a low-temperature printing material with excellent performance. [0003] Polyethylene oxide (PEO) is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/02C08L61/06C08L61/14C08L91/00C08K5/053C08K5/05C08K5/11C08K5/12B33Y70/00
CPCB33Y70/00C08K5/05C08K5/053C08K5/11C08K5/12C08L71/02C08L2201/08C08L91/00C08L61/06
Inventor 余若冰
Owner EAST CHINA UNIV OF SCI & TECH
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