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Toughened high density polyethylene 3D printing moulding material and preparation method thereof

A high-density polyethylene and 3D printing technology, applied in the field of 3D printing molding materials, can solve the problems of difficult handling, complicated operation, and complicated FDM of nanofiber composite lines, and achieve the effect of low production cost and simple production process

Active Publication Date: 2014-08-13
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the FDM of the nanofiber composite wire is very complicated and difficult to handle
The 3D molding system used in this patent is a solution system. Its disadvantage is that it is not easy to disperse uniformly. Special attention must be paid to the degree of bonding of the material, and the material needs to be ground and modified, which is complicated to operate.

Method used

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  • Toughened high density polyethylene 3D printing moulding material and preparation method thereof
  • Toughened high density polyethylene 3D printing moulding material and preparation method thereof
  • Toughened high density polyethylene 3D printing moulding material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A toughened high-density polyethylene 3D printing molding material, the formula of which is as follows:

[0049]

[0050] The master batch is added by adding 100 parts of ethylene-propylene elastomer, 1000 parts of xylene diluent, 0.25 parts of BPO and 4.0 parts of DMSO into a reactor equipped with a stirrer, a reflux condenser, and a thermometer, stirring and heating to 125 ° C, After reacting for 3 hours, a toughening masterbatch was prepared. Mix 68 parts of 2200J high-density polyethylene, 10 parts of carbon nanotubes and 0.2 parts of antioxidant tris[2,4-di-tert-butylphenyl] phosphite with 32 parts of toughening masterbatch, in Extrude and granulate on a twin-screw extruder to prepare a blend. The temperature from the feeding section to the nozzle die is 130, 135, 155, 165, 185, 180°C; the main screw speed is 90r / min.

Embodiment 2

[0052] A toughened high-density polyethylene 3D printing molding material, the formula of which is as follows:

[0053]

[0054] Add 80 parts of ethylene-propylene elastomer, 20 parts of styrene-butadiene elastomer, 1000 parts of xylene solvent, 0.25 parts of BPO, and 4.0 parts of DMSO into the reactor equipped with agitator, reflux condenser, and thermometer, stir and heat up to 125°C , and reacted for 3 hours to prepare a toughening masterbatch. Mix 64 parts of 2200J high-density polyethylene, 20 parts of carbon nanotubes and 0.2 parts of tris[2.4-di-tert-butylphenyl] phosphite with 36 parts of toughening masterbatch, and extrude in twin-screw Extrude and granulate on the machine to prepare the blend. The temperature from the feeding section to the nozzle die is 130, 135, 155, 165, 185, 180°C; the main screw speed is 90r / min.

Embodiment 3

[0056] A toughened high-density polyethylene 3D printing molding material, the formula of which is as follows:

[0057]

[0058] Add 60 parts of ethylene-propylene elastomer, 40 parts of styrene-butadiene elastomer, 1000 parts of xylene solvent, 0.25 parts of BPO and 4.0 parts of DMSO into the reactor equipped with a stirrer, reflux condenser and thermometer, stir and heat up to 125°C , reacted for 3 hours to prepare the toughening masterbatch under the formula. 60 parts of 2200J high-density polyethylene, 15 parts of carbon nanotubes and 0.1 parts of antioxidant tris[2.4-di-tert-butylphenyl] phosphite were mixed with 40 parts of toughening masterbatch in a twin-screw Extrude and granulate on an extruder to prepare a blend. The temperature from the feeding section to the nozzle die is 130, 135, 155, 165, 185, 180°C; the main screw speed is 90r / min. Example 4

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Abstract

The invention relates to a toughened high density polyethylene which includes high density polyethylene and a toughening master batch. The toughening master batch is prepared from an ethylene-propylene elastomer, butylbenzene elastomer, a diluent, an anti-crosslinking agent and a free radical polymerization initiator. The invention also relates to a preparation method of the toughened high density polyethylene, the toughening master batch, a preparation method of the toughening master batch, an application of the toughening master batch in the toughened high density polyethylene, an application of the toughened high density polyethylene in 3D printing and a 3D printing method. High density polyethylene is toughened with the self-made synthesized toughening master batch. The toughened high density polyethylene is good in heat resistance, has high rigidity and toughness, and is also good in environment stress cracking resistance. An obtained blend, which is formed by blending the toughened high density polyethylene with elastomers, has not only original characteristics but also a relative high rigidity conservation rate when toughness of the obtained blend is significantly increased, so that the blend is suitable for 3D printing.

Description

technical field [0001] The invention relates to a 3D printing molding material, in particular to a toughened high-density polyethylene 3D printing molding material and a preparation method thereof. Background technique [0002] 3D printing technology (Three Dimensions Printing, 3D printing technology, 3DP) is a form of additive manufacturing (AM) technology. The molding system uses laser beams, hot-melt nozzles, etc. to stack and bond special materials such as metal powder, ceramic powder, plastic, and cell tissue layer by layer, and finally superimpose molding to manufacture physical products. Additive manufacturing technology was first standardized by ASTM International (formerly known as the American Society for Testing and Materials). There are 3 different terms for stacked manufacturing technology: Stereolithography, 3-D layering and 3D printing; among them, 3D printing has gradually become the most suitable term for stacked manufacturing technology and its products. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/16C08L9/06C08K5/41C08K7/00C08K3/04C08J3/22
CPCB29C48/92B29C2948/92704C08J3/226C08J2323/06C08J2409/06C08J2423/16C08K2201/011C08L23/06C08L2201/08C08L2205/03C08L2207/062C08L23/16C08K7/24C08K5/526C08K5/41C08L9/06
Inventor 晏蜻张文娟杨文泓邢其锋孙文华赵宁董金勇李春成符文鑫林学春马永梅
Owner INST OF CHEM CHINESE ACAD OF SCI
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