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A kind of high fluidity elastic powder for three-dimensional printing and preparation method thereof

A high-fluidity, three-dimensional printing technology, applied in the field of three-dimensional printing technology polymer materials, can solve problems such as poor powder fluidity, and achieve the effects of good powder fluidity, improved surface gloss, and improved fluidity

Active Publication Date: 2018-02-13
福建慧思通三维技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the shortcomings of poor powder fluidity of the current elastic material thermoplastic polyurethane (TPU) resin used in the field of three-dimensional printing, the present invention provides a high-fluidity elastic powder for three-dimensional printing, with thermoplastic polyurethane resin as the main body, nanometer two Molybdenum sulfide modifies the fluidity of its powder, and the obtained composition powder has good fluidity and strong mechanical properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Raw materials are prepared according to the following proportions:

[0034] 100 parts of polyurethane resin, 10 parts of nano molybdenum disulfide solid flow agent, 5 parts of aluminum oxide as inorganic filler, 1 part of paraffin wax as lubricant, 0.5 part of isopropyl triisostearyl titanate as coupling agent;

[0035] In parts by weight, under the condition of 80°C, 100 parts of polyurethane resin, 10 parts of solid flow agent, 5 parts of inorganic filler, 1 part of lubricant and 0.5 part of coupling agent were added to the plow mixer, and the After min stirring and mixing for 10 minutes, the mixed material was obtained;

[0036] The obtained mixed material was put into a high-speed centrifugal spray dryer, and spray-dried at 150° C. at a rotational speed of 10,000 r / min to obtain an elastic powder.

[0037] The main properties of pure polyurethane resin powder and the elastic powder of embodiment 1 are detected and compared, and the detection results are as follows ...

Embodiment 2

[0041] Raw materials are prepared according to the following proportions:

[0042] 100 parts of polyurethane resin, 20 parts of nanomolybdenum disulfide solid flow agent, 10 parts of inorganic filler iron powder, 5 parts of lubricant sulfonic acid wax, 2 parts of coupling agent polyoxyethylene ether;

[0043] In parts by weight, under the condition of 80°C, 100 parts of polyurethane resin, 20 parts of solid flow agent, 10 parts of inorganic filler, 5 parts of lubricant, 2 parts of coupling agent and 1 part of antioxidant were added to the coulter type mixing In the machine, stir and mix at 150r / min for 30min to obtain the mixed material;

[0044] The obtained mixed material was put into a high-speed centrifugal spray dryer, and spray-dried at 150° C. at a rotational speed of 15,000 r / min to obtain an elastic material composition.

[0045] The main properties of pure polyurethane resin phenol and the elastic powder of embodiment 2 are detected and compared, and the detection r...

Embodiment 3

[0049] Raw materials are prepared according to the following proportions:

[0050] 100 parts of polyurethane resin, 15 parts of nano molybdenum disulfide as solid flow agent, 8 parts of titanium dioxide as inorganic filler, 3 parts of sodium octadecanoate as lubricant, 1.5 parts of polyoxyethylene fatty amine as coupling agent, and phosphite esters as antioxidant 0.5 copies;

[0051] In parts by weight, under the condition of 80°C, add 100 parts of polyurethane resin, 15 parts of solid flow agent, 8 parts of inorganic filler, 3 parts of lubricant, 1.5 parts of coupling agent, and 0.5 parts of antioxidant into the coulter type mixing In the machine, stir and mix at 120r / min for 20min to obtain the mixed material;

[0052] The obtained mixed material was put into a high-speed centrifugal spray dryer, and spray-dried at 150° C. at a rotational speed of 12000 r / min to obtain an elastic material composition.

[0053] The main performance of pure polyurethane resin elastic powder ...

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Abstract

The invention provides high-flowability elastic powder for 3D printing. The high-flowability elastic powder is characterized in that nano molybdenum disulfide modified elastic powder is adopted, and the high-flowability elastic powder is prepared from materials in parts by weight as follows: 100 parts of polyurethane resin, 10-20 parts of a solid flowable agent, 5-10 parts of inorganic filler, 1-5 parts of a lubricating agent and 0.5-2 parts of a coupling agent. Materials are dried by a vacuum drying box and uniformly mixed by a coulter type mixing machine, molybdenum disulfide is attached to the surface of the elastic powder after the mixture is dried by a spray drier, products have good uniformity and flowability, the particle diameters are uniform, the mechanical performance is excellent, and 3D printing of the elastic powder is realized; the production process is simplified, and operation and control are convenient.

Description

technical field [0001] The invention relates to the field of three-dimensional printing technology polymer materials, in particular to a high-fluidity elastic powder for three-dimensional printing and a preparation method thereof. Background technique [0002] Three-dimensional (3D) printing technology appeared in the mid-1990s. In recent years, a type of rapid prototyping technology that has received widespread attention and rapid development is actually the latest rapid prototyping device using technologies such as photocuring and paper lamination. 3D printing technology is also known as additive manufacturing technology. The basic principle is stacked manufacturing, which is a technology that increases materials layer by layer to generate three-dimensional entities. It is actually an emerging technology in the field of rapid prototyping. It is a digital model file-based , the technology of constructing objects by layer-by-layer printing using bondable materials such as po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08L71/02C08K3/30C08K3/22C08K5/10C08K3/08C08K5/098B29B13/06
CPCB29B13/06C08L75/04C08L2205/03C08L91/06C08K2003/3009C08K2003/2227C08K5/10C08L71/02C08K2003/0856C08K2003/2241C08K5/098
Inventor 卢思桥邹剑雄黄文典覃华栋黄进骏
Owner 福建慧思通三维技术有限公司
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