Low-temperature 3D printing material and preparation method thereof
A 3D printing, low-temperature technology, applied in the field of 3D printing materials, can solve problems such as nozzle breakage, easy softening and deformation, affecting printing, etc., to achieve the effect of maintaining low temperature performance, low cost, and solving transportation problems
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[0035] The present invention also provides a method for preparing the low-temperature 3D printing material. In a specific embodiment, the preparation method includes the following steps:
[0036] (1) Dry polycaprolactone at 40°C for more than 4 hours, and dry other components at 50-80°C for more than 2 hours;
[0037] (2) When the lubricant is liquid, first put the dry polycaprolactone and the liquid lubricant into a high-speed mixer in proportion, stir for 3min to 5min at 10°C to 30°C, and then mix them in proportion to Add the dried inorganic powder and antioxidant, and stir at 10-30°C for 5-15 minutes; when the lubricant is solid, mix the dried polycaprolactone, inorganic powder, antioxidant Put the oxygen agent into a high-speed mixer and stir at 10-30°C for 5-15 minutes;
[0038] (3) Add the material mixed in step (2) into the hopper of the twin-screw extruder, and obtain the low-temperature 3D printing material through melt blending, extrusion, water cooling, and air-dr...
Embodiment 1
[0043] The low-temperature 3D printing material includes the following components in mass percentage: PCL is 83.9%, surface-treated inorganic powder (hereinafter referred to as inorganic compound) is 15%, (antioxidant) B215 is 0.5%, ( Lubricant) PMX-200 is 0.6%.
[0044] The preparation method of the low temperature 3D printing material is as follows:
[0045] Dilute the silane coupling agent accounting for 1.0% of the total mass of the inorganic powder with absolute ethanol, and the mass ratio of absolute ethanol to the silane coupling agent is 8:1. In the beaker of the high-speed stirrer, add the inorganic powder weighed in proportion while stirring, continue to stir for 10 minutes after all the inorganic powder is added, and finally dry it in an oven at 80°C for 5 hours to obtain the surface-treated Inorganic powder, finally grind the dried powder and place it in an airtight container for later use.
[0046] The PCL was dried at 40°C for 4 hours and the remaining powder c...
Embodiment 2
[0048] Low temperature 3D printing materials, including the following components in mass percentage: PCL is 73.8%, inorganic compound is 25%, B215 is 0.5%, PMX-200 is 0.7%
[0049] The preparation method of the low temperature 3D printing material is as follows:
[0050] Dilute the silane coupling agent accounting for 1.0% of the total mass of the inorganic powder with absolute ethanol. The mass ratio of absolute ethanol to the silane coupling agent is 8:1. In a beaker equipped with a high-speed stirrer, add the inorganic powder weighed in proportion while stirring, continue to stir for 10 minutes after all the inorganic powder is added, and finally dry it in an oven at 80°C for 5 hours to obtain the surface The processed inorganic powder is finally ground into a fine powder after drying and placed in a closed container for use.
[0051] The PCL was dried at 40°C for 4 hours and the remaining powder components were dried at 70°C for 2 hours. Weigh 3.69kg of PCL, 1.25kg of in...
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