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A kind of high-strength low-shrinkage nylon material for 3D printing and its preparation method

A 3D printing, high-strength technology, applied in the field of 3D printing materials, can solve the problems of poor printing effect and poor mechanical properties, and achieve the effect of low shrinkage, high mechanical properties, and excellent physical and mechanical properties

Active Publication Date: 2018-09-21
中广核三角洲(江苏)塑化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, the present invention solves the problems of poor mechanical properties and poor printing effect of existing 3D printing materials

Method used

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  • A kind of high-strength low-shrinkage nylon material for 3D printing and its preparation method
  • A kind of high-strength low-shrinkage nylon material for 3D printing and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 100 parts of dried PA6I / 6T (specifically, G21 of Swiss EMS company), 20 parts of PA12 (specifically, of Swiss EMS company's L20W20), 0.5 parts of ethylene bisstearamide, 0.3 parts of chain extender / compatible agent (specifically ADR4368 from BASF, Germany), 0.2 parts of antioxidant H161, melt-blended, extruded and granulated at 200-245°C. The nylon modified material obtained above was dried for 4 hours in a dehumidification drying oven, the temperature of the dehumidification drying oven was 90°C, and the dew point temperature was -40°C. Afterwards, the dried resin composition is added to the FDM 3D printing consumable extruder, and the extrusion temperature is 235-245°C. Control the water temperature, extrusion volume and traction rate, and control the diameter of the consumables to be 1.75±0.03mm respectively to obtain high-strength FDM 3D nylon printing consumables. According to the standard test material, the tensile strength is 84.0MPa, the elongation at break is ...

Embodiment 2

[0035]100 parts of dried PA6I / 6T (specifically GTR45 from Swiss EMS), 20 parts of PA12 (specifically L20W20 from Swiss EMS), 0.5 parts of ethylenebisstearamide, 0.3 parts of chain extender / compatible Agent ADR 4368, 0.2 parts of antioxidant H161, melt blending extrusion granulation under the condition of 200-245 ℃. The nylon modified material obtained above was dried for 4 hours in a dehumidification drying oven, the temperature of the dehumidification drying oven was 90°C, and the dew point temperature was -40°C. Afterwards, the dried resin composition is added to the FDM 3D printing consumable extruder, and the extrusion temperature is 235-245°C. Control the water temperature, extrusion volume and traction rate, and control the diameter of the consumables to be 1.75±0.03mm respectively to obtain high-strength FDM 3D nylon printing consumables. According to the standard test material, the tensile strength is 86.3MPa, the elongation at break is 203%, and the notched impact st...

Embodiment 3

[0037] 100 parts of dried PA6I / 6T (specifically, G21 of Swiss EMS company), 30 parts of PA12 (specifically, of Swiss EMS company's L20W20), 0.5 parts of ethylene bisstearamide, 0.3 parts of chain extender / compatible Agent ADR 4368, 0.2 parts of antioxidant H161, melt blending extrusion granulation under the condition of 200-245 ℃. The nylon modified material obtained above was dried for 4 hours in a dehumidification drying oven, the temperature of the dehumidification drying oven was 90°C, and the dew point temperature was -40°C. Afterwards, the dried resin composition is added to the FDM 3D printing consumable extruder, and the extrusion temperature is 235-245°C. Control the water temperature, extrusion volume and traction rate, and control the diameter of the consumables to be 1.75±0.03mm respectively to obtain high-strength FDM 3D nylon printing consumables. According to the standard test material, the tensile strength is 80.9MPa, the elongation at break is 303%, and the n...

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Abstract

The invention discloses a nylon material with high strength and low shrinkage for 3D (three-dimensional) printing and a preparation method of the nylon material. The nylon material is prepared from the following components in terms of parts by weight: 100 parts of PA6I / 6T, 5-50 parts of long-chain polyamide or block polyether amide, 0.1-2 parts of chain extender / compatilizer, 0.1-1 part of lubricating agent and 0.1-1 part of antioxidant, wherein the intrinsic viscosity of the PA6I / 6T is 0.6-0.9; the long-chain polyamide or block polyether amide is one or more of PA1010, PA11, PA12, PEBAX block polyether amide resin; the chain extender / compatilizer is an acrylic copolymer with polycyclic oxygen groups; the number of the epoxy functional groups is 3-9.The nylon material disclosed by the invention has the advantages that the tensile strength reaches 75 MPa, the elongation at break is greater than 300%, the notch impact strength is greater than 30 KJ / m2, the load thermal deformation temperature is greater than 105 DEG C, the shrinking percentage is smaller than 0.6%, the hydroscopicity is smaller than 1.2%, the effects of excellent physical mechanical performance, excellent printing performance and excellent glossiness are achieved, the durability of a printed article is much greater than that of an article prepared from the existing PA12 material, ABS (Acrylonitrile butadiene styrene) material and PLA (Polylactic acid) material.

Description

technical field [0001] The invention relates to the technical field of 3D printing materials, and relates to a high-strength and high-heat-resistant polylactic acid material for 3D printing, that is, a high-strength and low-shrinkage nylon material for 3D printing and a preparation method thereof. Background technique [0002] 3D printing technology, also known as additive manufacturing technology, is actually an emerging technology in the field of rapid prototyping. It is based on digital model files and uses bondable materials such as powdered metal or plastic. A technique for constructing objects in a manner. The basic principle is additive manufacturing, the technique of adding material layer by layer to generate a three-dimensional solid. FDM technology is the only professional 3D printing technology that uses production-grade thermoplastics as consumables. This process does not require lasers, and is easy to use and maintain, with low costs. At present, most desktop-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L77/02C08L77/00C08L33/00C08K5/20C08K5/13B33Y70/00
CPCC08L77/06C08L2201/08C08L2201/10C08L2205/02C08L2205/03C08L2205/08C08L77/02C08L33/00C08K5/20C08K5/13C08L77/00
Inventor 杨刚
Owner 中广核三角洲(江苏)塑化有限公司
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