Reinforced toughened nylon material can be used for 3D printing and preparation method thereof

A technology of strengthening and toughening and 3D printing, applied in the direction of additive processing, etc., can solve the problems of low heat-resistant temperature, easy warpage, difficulty in printing, poor molding effect, etc., and achieve high heat-resistant temperature and low molding shrinkage , the effect of comprehensive performance improvement

Inactive Publication Date: 2018-02-02
四川鑫达企业集团有限公司
6 Cites 12 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0006] The research content of the present invention is to develop a reinforced and toughened nylon material that can be used for 3D printing, so as to solve the problem of low heat resistance temperature, poor moldi...
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Method used

As can be seen from comparative examples 1 ~ 2 and traditional consumables performance, according to the 3D printing consumables special material prepared by the preparation method provided by this patent, mechanical properties are better than traditional PLA and ABS materials, meanwhile, for traditional nylon material shrinkage Larger and lower thermal deformation temperature, the addition of glass fiber greatly reduces the shrinkage of the material and increases the therma...
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Abstract

The invention discloses a reinforced toughened nylon material can be used for 3D printing and a preparation method thereof. The reinforced toughened nylon material is consisted of the following components in percentage by mass: 60%-75% of polyamide 6 (PA6), 10%-20% of glass fiber (GF), 10%-20% of a toughening agent, 4%-8% of a compatibilizer, 0.3%-0.6% of an antioxidant, 0.3%-2% of a coupling agent, and 0.2%-1% of a nucleating agent. The material has the advantages that: 1, the addition of the compatibilizer and the coupling agent remarkably improves the compatibility and the bonding strengthbetween each component, so that the overall performance of the material is obviously improved; 2, the use of a certain diameter long glass fiber reinforcement reduces the shrinkage rate of the material, and improves the serious warpage shortcoming of the material when the material is used for printing; and 3, the addition of the toughening agent solves the shortcoming that the nylon material is lack in toughness after the glass fiber is reinforced, so that consumable printing use is facilitated. Compared with the performance of an existing nylon material, the material prepared in the inventionhas better mechanical properties, higher heat-resistant temperature, and lower molding shrinkage rate, and is not liable to warpage, so that the material is very suitable for preparing FDM-3D printing consumables.

Application Domain

Technology Topic

Examples

  • Experimental program(2)
  • Effect test(1)

Example Embodiment

[0015] Example 1
[0016] (1) Dry the PA6 in a constant temperature drying oven at 80°C for 5 hours;
[0017] (2) Prepare the experimental materials according to the following composition ratios: PA6 64%, POE 15%, compatibilizer 3.5%, antioxidant 0.5%, coupling agent 1%, calcium carbonate 1%;
[0018] (3) Place the above-mentioned experimental raw materials in a high-speed mixer and fully mix for 2 minutes to obtain uniformly mixed experimental materials;
[0019] (4) Pass the above-mentioned uniformly mixed experimental material through a twin-screw high-temperature extruder, control the main engine speed and feeding speed to stabilize the glass fiber content at 15%, extrude, cool, dry, and granulate, and obtain a product that can be used for For the 3D printed reinforced and toughened nylon material, the temperature of the 8 stages of the extruder is 235°C, 235°C, 240°C, 240°C, 240°C, 240°C, 240°C, 240°C, and the head temperature is 240°C. The main engine speed is 267r/min, and the feeding speed is 11.5r/min;
[0020] (5) A reinforced and toughened nylon material that can be used for 3D printing prepared by (4), its simply supported beam notched impact strength is 11.6KJ/M 2 , the tensile strength is 73.2MPa, the shrinkage ratio is 0.25%, and the thermal deformation temperature is 182.5℃. The 3D printing consumables prepared by using this material have smooth printing, no plugging, no warping, good molding effect, and have excellent application prospects.

Example Embodiment

[0021] Embodiment 2
[0022] (1) Dry the PA6 in a constant temperature drying oven at 90°C for 4.5 hours;
[0023] (2) Prepare the experimental materials according to the following composition ratios: PA6 73%, POE 10%, compatibilizer 5%, antioxidant 1%, coupling agent 0.5%, nano-silica 0.5%;
[0024] (3) Place the above-mentioned experimental raw materials in a high-speed mixer and fully mix for 3 minutes to obtain uniformly mixed experimental materials;
[0025] (4) Pass the above-mentioned uniformly mixed experimental material through a twin-screw high temperature extruder, control the speed of the main engine and the feeding speed to stabilize the glass fiber content at 10%, extrude, cool, dry, and granulate to obtain a product that can be used for For the 3D printed reinforced and toughened nylon material, the temperature of the 8 stages of the extruder is 235°C, 235°C, 240°C, 240°C, 240°C, 240°C, 240°C, 240°C, and the head temperature is 240°C. The main engine speed is 252r/min, and the feeding speed is 12.8r/min;
[0026] (5) A reinforced and toughened nylon material that can be used for 3D printing prepared by (4), its simply supported beam notched impact strength is 13.2KJ/M 2 , the tensile strength is 66.6MPa, the shrinkage ratio is 0.4%, and the thermal deformation temperature is 162.3℃. The 3D printing consumables prepared by using this material have smooth printing, no plugging, no warping, good molding effect, and have excellent application prospects.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

PropertyMeasurementUnit
Charpy notched impact strength11.6kJ/m²
Tensile strength73.2mPa
Heat distortion temperature182.5°C
tensileMPa
Particle sizePa
strength10

Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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