Polyether-ether-ketone/short-fiber composite filament material and preparation method thereof

A polyether ether ketone and short fiber technology, which is applied in the field of fused deposition molding materials and its preparation, can solve the problems of high shrinkage rate and low interlayer bonding strength of pure PEEK, and achieve good fluidity, good rigidity, and suitable particle size Effect

Inactive Publication Date: 2017-10-10
GUANGDONG SILVER AGE SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a PEEK / SF composite filament for FDM fused deposition molding, and at the same time provides its preparation method to solve the problems of high shrinkage of pure PEEK and low bonding strength between layers during printing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1, comprises the following steps:

[0031] (1) Soaking and washing steps: immerse 300g of short carbon fibers in acetone solution for 24 hours to remove the organic slurry on the surface; after washing, place the temperature in a vacuum drying oven to 120°C and keep it warm for 12 hours to obtain degummed dry short fibers;

[0032] (2) Oxidation treatment step: Add 200g of dried short fibers into 2L of nitric acid solution, and ultrasonically stir for 3 hours at 55°C to carry out surface oxidation treatment, then dilute the nitric acid solution, stand for stratification, suction filter, wash, and dry , to obtain a dry clean material; the concentration of the nitric acid solution is 60wt.%;

[0033] (3) Step of preparing primary suspension: adding 200 g of the obtained dry clean material and 4.5 g of hydroxyethyl cellulose into 3 L of ethanol solution with a concentration of 70 Vol.%, and while stirring, ultrasonically treat for 3 hours to obtain a uniform Pr...

Embodiment 2

[0038] Embodiment 2, comprises the following steps:

[0039] (1) Soaking and washing steps: soak 100g short glass fiber in acetone solution for 48 hours to remove the organic slurry on its surface; after washing, put it in a vacuum drying oven and heat it up to 80°C and keep it warm for 8 hours to obtain degummed dry short fiber ;

[0040] (2) Oxidation treatment step: Add 80g of dry short fibers into 2L of nitric acid solution, and ultrasonically stir for 4 hours at 65°C to carry out surface oxidation treatment, then dilute the nitric acid solution, stand for stratification, suction filter, wash, and dry , to obtain a dry clean material; the concentration of the nitric acid solution is 69wt.%;

[0041] (3) Preparation of the primary suspension step: the obtained 65.56g dry clean material and 3g hexadecyltrimethylammonium bromide (HTAB) are added to 1.5L concentration in the ethanol solution of 80Vol.%, while stirring , sonicated for 2h to obtain a uniform primary suspension; ...

Embodiment 3

[0046] Embodiment 3, comprises the following steps:

[0047] (1) Soaking and washing steps: Soak 110g of short boron fiber (SBF) in acetone solution for 36 hours to remove the organic slurry on its surface; after washing, put it in a vacuum drying oven and raise the temperature to 80°C and keep it warm for 10 hours , to obtain degummed dry staple fiber;

[0048] (2) Oxidation treatment step: Add 103g of dry short fibers to 200mL nitric acid solution, and ultrasonically stir at 60°C for 3 hours to carry out surface oxidation treatment, then dilute the nitric acid solution, stand for stratification, suction filter, wash, and dry , to obtain a dry clean material; the concentration of the nitric acid solution is 75wt.%;

[0049] (3) Preparation of the primary suspension step: the obtained 102.3g dry clean material and 2g alkylphenol ethylene oxide condensate emulsifier are added to the concentration of 2L in the ethanol solution of 70Vol.%, while stirring, ultrasonically Treat f...

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Abstract

The invention discloses a polyether-ether-ketone / short-fiber composite filament material for FDM (fused deposition modeling) and a preparation method thereof, belongs to fused deposition modeling materials and a preparation method of the fused deposition modeling materials, and solves the problems that pure PEEK (polyether-ether-ketone) is high in shrinkage rate, and bonding strength between layers is low in printing. According to the composite filament material, short fibers are short-cut inorganic fibers, surface oxidation treatment is performed on the short fibers, the treated short fibers and dispersing agents are added into ethanol solution, mixture is stirred and ultrasonically treated to form primary suspension liquid, polyether-ether-ketone powder is added into the primary suspension liquid, mixed materials of the primary suspension liquid and the polyether-ether-ketone powder are stirred and ultrasonically treated to form secondary suspension liquid, pressure reduction, extraction filtration, drying and ball-milling are performed on the secondary suspension liquid to obtain composite powder, and granulation and filament drawing are performed on the composite powder to obtain the composite filament material. The composite filament material is uniform in shape and good in chemical resistance and has better rigidity, toughness and abrasion resistance, the use temperature of the composite filament material can reach 260 DEG C or more, the shrinkage rate of the composite filament material is greatly reduced, and bonding strength between layers is improved when the composite filament material is used for FDM processes.

Description

technical field [0001] The invention belongs to a fused deposition molding material and a preparation method thereof, in particular to a polyetheretherketone / short fiber composite silk material for FDM and a preparation method thereof. Background technique [0002] Fused Deposition Modeling (FDM) technology is an important branch of additive manufacturing technology. It is currently widely used in product development, rapid mold making, design and development of medical devices and prototype production of human organs, representing rapid prototyping manufacturing technology. an important direction of development. [0003] Fused deposition modeling is based on the idea of ​​discrete stacking. Filamentous thermoplastic resin is heated and melted through the nozzle, and extruded at a certain speed through the nozzle of the nozzle. The nozzle moves in the horizontal direction so that the melted thermoplastic resin is selectively coated on the job. At the same time, the workbenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F1/10C08L61/16C08K9/02C08K7/14C08K7/06C08K7/04B33Y70/00
CPCD01F6/94B33Y70/00C08K7/04C08K7/06C08K7/14C08K9/02C08K2201/003C08K2201/004C08L61/16C08L2203/12D01F1/10C08L1/284C08L71/02
Inventor 闫春泽唐明晨史玉升傅轶汪艳魏青松刘洁
Owner GUANGDONG SILVER AGE SCI & TECH CO LTD
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