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3D printing powder consumable for medical model and preparation method of 3D printing powder consumable

A 3D printing and powder technology, which is applied in the direction of additive processing, can solve the problems of poor mechanical properties of PA12, achieve the effects of increasing tensile strength, bending strength and friction resistance, improving fluidity and reducing costs

Pending Publication Date: 2022-03-29
黑龙江科瑞创联设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the poor mechanical properties of PA12, for functional parts with high performance requirements, PA12 needs to be further improved in terms of strength, modulus, and heat distortion temperature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A PA / GB high-filling composite material powder for selective laser sintering 3D printing, prepared from the following raw materials in parts by weight: 550 parts of PA12 raw materials, 450 parts of glass beads, 5 parts of antioxidant, and 5 parts of flow aid ; Its concrete preparation method step is:

[0022] Step 1: Prepare PA12 raw materials, glass beads, antioxidants, and flow aids, and dry them for later use, so that the moisture content of each raw material is less than 0.05%;

[0023] Step 2: Weigh 550 parts of PA12 raw materials, 450 parts of glass beads, 5 parts of antioxidant, and 5 parts of flow aid according to parts by weight;

[0024] Step 3: Add the PA12 raw material weighed in step 2 into the high mixer, then add the antioxidant weighed in step 2 and mix for 10 minutes;

[0025] Step 4: Use a twin-screw extruder to granulate the mixture obtained in step 3. The screw diameter of the twin-screw extruder is 75mm, and the length-to-diameter ratio is 45:1. 1...

Embodiment 2

[0030] A PA / GB high-filling composite material powder for selective laser sintering 3D printing, prepared from the following raw materials in parts by weight: 500 parts of PA11 raw material, 500 parts of glass microspheres, 5 parts of antioxidant, and 1 part of flow aid ; Its concrete preparation method step is:

[0031] Step 1: Prepare PA11 raw materials, glass microspheres, antioxidants, and flow aids, and dry them for later use, so that the moisture content of each raw material is less than 0.05%;

[0032] Step 2: Weigh 500 parts of PA11 raw materials, 500 parts of glass beads, 5 parts of antioxidant, and 1 part of flow aid according to parts by weight;

[0033] Step 3: Add the P11A raw material weighed in step 2 into the high mixer, then add the antioxidant weighed in step 2 and mix for 10 minutes;

[0034] Step 4: Use a twin-screw extruder to granulate the mixture obtained in step 3. The screw diameter of the twin-screw extruder is 75mm, and the length-to-diameter ratio ...

Embodiment 3

[0039] A PA1212 / GB high-filling composite material powder for selective laser sintering 3D printing, prepared from the following raw materials in parts by weight: 600 parts of PA raw material, 400 parts of glass microspheres, 5 parts of antioxidant, and 5 parts of flow aid ; Its concrete preparation method step is:

[0040] Step 1: Prepare PA1212 raw materials, glass microspheres, antioxidants, and flow aids, and dry them for later use, so that the moisture content of each raw material is less than 0.05%;

[0041] Step 2: Weigh 600 parts of PA1212 raw materials, 400 parts of glass beads, 5 parts of antioxidant, and 5 parts of flow aid according to parts by weight;

[0042] Step 3: Add the PA1212 raw material weighed in step 2 into the high mixer, then add the antioxidant weighed in step 2 and mix for 10 minutes;

[0043] Step 4: Use a twin-screw extruder to granulate the mixture obtained in step 3. The screw diameter of the twin-screw extruder is 75mm, and the length-to-diame...

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Abstract

The invention belongs to the technical field of 3D printing, and particularly relates to modified polymer composite material powder for SLS printing of a medical model and a preparation method of the modified polymer composite material powder. The polymer composite powder for SLS 3D printing of the medical model is prepared from the following raw materials in parts by weight: 500-600 parts of a PA raw material, 400-500 parts of glass beads, 5-10 parts of an antioxidant and 1-5 parts of a flow promoter, the PA powder and the glass beads are physically blended to prepare the powder consumable for selective laser sintering, so that the cost of the material is effectively reduced, the tensile strength, bending strength and friction resistance of a printed product can be effectively improved, the flowability of the powder consumable is improved, the powder is flatly laid in the printing process, and the service life of the powder consumable is prolonged. The size precision and the surface smoothness of printed parts are improved, and warping generated during printing is reduced.

Description

technical field [0001] The invention belongs to the technical field of selective laser sintering 3D printing, and in particular relates to a PA / GB highly filled composite material powder for selective laser sintering 3D printing and a preparation method thereof. Background technique [0002] Selective Laser Sintering (SLS) rapid prototyping technology uses the principle of sintering powder materials under laser irradiation, and builds up layers under computer control. This technology can be used to form parts of almost any geometric shape, including molds of various complex shapes required in industrial production; the technology can be applied to a very wide range of materials, including polymers, ceramics, metals and various composite materials Wait. 3D printers can manufacture many items, such as airplanes, pistols, food, human organs, children's toys, etc. 3D printing technology is a major breakthrough in the world's manufacturing technology field in the past 20 years....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K7/20B33Y70/10
CPCC08K7/20B33Y70/10C08L77/02
Inventor 毛彦龙李健成张炳谢众
Owner 黑龙江科瑞创联设备有限公司
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