A kind of polypropylene consumables for 3D printing and preparation method thereof

A technology of 3D printing and polypropylene, which is applied in the field of polypropylene consumables for 3D printing and its preparation. It can solve the problems of rough surface of 3D printing products, shrinkage and deformation of crystallization, etc., achieve small shrinkage, reduce product shrinkage, and improve machinability Effect

Active Publication Date: 2022-01-21
GUIZHOU AEROSPACE TIANMA ELECTRICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problems in the prior art, the present invention provides a polypropylene for 3D printing that can solve the problems of crystallization shrinkage and deformation of the above-mentioned polypropylene consumables and rough surface of 3D printing products, and has better resistance to heat and oxygen aging. The consumables and their preparation methods are as follows:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Raw material drying: Take 72.5kg of polypropylene pellets, 15kg of thermoplastic elastomer, 15kg of talcum powder masterbatch, 10kg of maleic anhydride grafted polypropylene, 1.25kg of antioxidant, 0.85kg of lubricant, and 0.85kg of hyperdispersant , color masterbatch 3kg, dry polypropylene granules, thermoplastic elastomers, talcum powder masterbatch and maleic anhydride grafted polypropylene in a blast drying oven at a drying temperature of 90°C and a drying time of 7 hours;

[0040] (2) High-speed mixing: Use a high-speed mixer to mix polypropylene, thermoplastic elastomer, talcum powder masterbatch, maleic anhydride grafted polypropylene, antioxidant, lubricant, and hyperdispersant to make it evenly mixed;

[0041] (3) Blending extrusion granulation: Use a twin-screw compounding extruder to extrude and granulate the mixed materials. The parameters of the extruder are set to a temperature of 215°C in the first zone and 215°C in the second zone. The temperature in...

Embodiment 2

[0053] (1) Drying of raw materials: Take 60kg of polypropylene pellets, 25kg of thermoplastic elastomer, 25kg of talcum powder masterbatch, 15kg of maleic anhydride grafted polypropylene, 2kg of antioxidant, 1.5kg of lubricant, 1.5kg of hyperdispersant, color Masterbatch 5kg, dry polypropylene granules, thermoplastic elastomers, talcum powder masterbatches and maleic anhydride grafted polypropylene in a blast drying oven at a drying temperature of 60°C and a drying time of 10 hours;

[0054] (2) High-speed mixing: Use a high-speed mixer to mix polypropylene, thermoplastic elastomer, talcum powder masterbatch, maleic anhydride grafted polypropylene, antioxidant, lubricant, and hyperdispersant to make it evenly mixed;

[0055] (3) Blending extrusion granulation: Use a twin-screw compounding extruder to extrude and granulate the mixed materials. The parameters of the extruder are set to be 170°C in the first zone and 170°C in the second zone. The temperature in the third zone is ...

Embodiment 3

[0067] (1) Drying of raw materials: 85kg of polypropylene pellets, 5kg of thermoplastic elastomer, 5kg of talcum powder masterbatch, 5kg of maleic anhydride grafted polypropylene, 0.5kg of antioxidant, 0.2kg of lubricant, 0.2kg of hyperdispersant, Color masterbatch 1kg, dry polypropylene granules, thermoplastic elastomers, talcum powder masterbatches and maleic anhydride grafted polypropylene in a blast drying oven at a drying temperature of 120°C and a drying time of 4 hours;

[0068] (2) High-speed mixing: Use a high-speed mixer to mix polypropylene, thermoplastic elastomer, talcum powder masterbatch, maleic anhydride grafted polypropylene, antioxidant, lubricant, and hyperdispersant to make it evenly mixed;

[0069] (3) Blending extrusion granulation: Use a twin-screw compounding extruder to extrude and granulate the mixed materials. The parameters of the extruder are set to a temperature of 230°C in the first zone and 230°C in the second zone. The temperature in the third ...

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Abstract

The invention relates to the technical field of polymer materials, in particular to a polypropylene consumable for 3D printing and a preparation method thereof. The polypropylene consumables for 3D printing of the present invention are composed of polypropylene, thermoplastic elastomer, talcum powder masterbatch, maleic anhydride grafted polypropylene, antioxidant, lubricant, hyperdispersant and color masterbatch. In the present invention, thermoplastic elastomer is added to polypropylene to increase the toughness of the composite material; talcum powder masterbatch is added to reduce product cost and crystallization and shrinkage of matrix resin, and improve the forming precision of 3D printing; adding maleic anhydride grafted polypropylene to improve matrix resin The binding force with talcum powder; adding compound antioxidants can reduce the aging and decomposition of materials during the extrusion process, prolong the service life of the product, and interact with each auxiliary material to reduce shrinkage and improve anti-aging ability at the same time The result is that the obtained polypropylene consumables for 3D printing are not easy to crystallize, have good toughness, small shrinkage after molding, and strong anti-aging ability.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polypropylene consumable for 3D printing and a preparation method thereof. Background technique [0002] Polypropylene is an aliphatic hydrocarbon polymer, a material with the lowest density among general-purpose plastics. It has low water absorption and good insulation performance. Compared with polylactic acid and ABS consumables commonly used in 3D printing consumables, it is cheap. Polypropylene is used for 3D printing. Consumables have the potential to reduce the cost of 3D printing, which is conducive to the application and promotion of 3D printing technology. However, polypropylene is easy to crystallize, has poor toughness, and has a large shrinkage rate after molding, which leads to warping and deformation of the product during the 3D printing process. In addition, the heat and oxygen aging resistance of polypropylene is poor. The above defects affect the 3D ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L51/06C08L53/02C08L23/08C08K3/34B33Y70/10
CPCC08L23/12C08L51/06B33Y70/00C08L2205/035C08L2205/025C08L2201/08C08L53/02C08L23/0815C08K3/34
Inventor 杨大磊陈波向娜王力安渝黔陈尚勇谭乐高佳旺
Owner GUIZHOU AEROSPACE TIANMA ELECTRICAL TECH
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