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Antibacterial magnetic composite for 3D printing

A magnetic composite material, 3D printing technology, applied in the field of composite materials, can solve the problems of unsatisfactory antibacterial function, adverse effects on human health, enrichment of pollutants, etc., achieve the best magnetic properties and antibacterial properties, and improve surface antibacterial inhibition Bacterial function, the effect of broadening the scope of application

Inactive Publication Date: 2016-10-12
佛山市高明区诚睿基科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the storage, transportation and use of products printed by 3D printing technology, due to the influence of ambient environment and humidity in the air, harmful particles and gases, etc., bacteria are easy to breed on the surface, and pollutants are enriched, which will affect the human body. adverse health effects
At present, the antibacterial function of popular 3D printing products and their raw materials on the market is not very ideal and needs to be improved

Method used

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  • Antibacterial magnetic composite for 3D printing

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026](4) The preparation method of graphene / calcium carbonate composite filler is as follows: add 1 part of graphene into 100ml deionized water, and disperse for 200min under 800kW ultrasonic vibration and 1300r / min centrifugal speed to prepare graphene dispersion; Add one part of quantum dot calcium carbonate to 500ml deionized water, and disperse for 300min under 1300kW ultrasonic vibration and 1500r / min centrifugal speed stirring to prepare a calcium carbonate dispersion; slowly drop calcium carbonate dispersion into the graphene dispersion under 100kW ultrasonic , sonicated for 60 minutes, then suction filtered and dried to prepare a graphene / calcium carbonate composite filler.

[0027] (5) The preparation method of graphene / iron oxide powder is as follows: add graphene to 100ml deionized water, disperse for 200min under 800kW ultrasonic vibration and 1300r / min centrifugal speed stirring to prepare graphene dispersion liquid; add iron oxide powder 100ml of deionized water...

Embodiment 1

[0032] 1. Pretreatment of polylactic acid raw materials: crush polylactic acid raw materials (D, L-polylactic acid raw materials, weight average molecular weight 100,000) into 300 mesh powders, disperse them in pure water, and ultrasonicate (power 250W) for 1 hour, while ultrasonically Microwave irradiation (2800MHz, temperature controlled at 85°C) for 1 hour; stop ultrasonic and microwave irradiation, wash, discharge, and dry to obtain pretreated polylactic acid;

[0033] 2. Preparation of PLA / filler masterbatch: Disperse 9.7 parts of composite filler with ultrasonic stirring (500KW ultrasonic vibration and 1300r / min centrifugal speed stirring) in pure water to obtain a composite filler solution for later use; at heating temperature (60°C), Dissolve 22 parts of pretreated polylactic acid in an organic solvent to obtain a polylactic acid solution, which is divided into two parts to obtain the first and second parts of polylactic acid solution for later use; at a constant temper...

Embodiment 2

[0037] Based on the preparation method of Example 1, the only difference is that the addition ratio of the magnetic composite material in step 2 is changed to 20 parts.

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Abstract

The invention discloses an antibacterial magnetic composite material for 3D printing, which is composed of the following raw materials in parts by weight: 40-50 parts of polylactic acid, 20-25 parts of bulk method ABS, 10-20 parts of emulsion method ABS, styrene- 5~10 parts of acrylonitrile-glycidyl methacrylate copolymer, 0.01~0.05 parts of butyltriphenylphosphine bromide, 5~10 parts of composite filler, 15~30 parts of magnetic composite material, multi-walled carbon nanotubes / Nano silver / SiO 2 0.1~1 part of antibacterial material; the magnetic composite material is composed of graphene / iron oxide powder and multi-wall carbon nanotube / NdFeB powder in a weight ratio of 3:2; the composite filler is composed of graphene / SiO 2 The composite filler and the graphene / calcium carbonate composite filler are composed in a weight ratio of 3:1. The scientific ratio was obtained through multiple tests, and the obtained ABS / PLA magnetic composite material not only has excellent mechanical properties, but also has the best magnetic properties and antibacterial properties, which further broadens the application range of 3D printing materials.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to an antibacterial magnetic composite material for 3D printing. Background technique [0002] 3D printing technology, also known as additive manufacturing technology, is actually an emerging technology in the field of rapid prototyping. 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. At present, 3D printing technology is mainly used in product prototyping, mold manufacturing, art creation, jewelry making and other fields, replacing these traditional fine processing techniques. In addition, 3D printing technology is gradually applied in fields such as medicine, bioengineering, architecture, clothing, aviation, etc., opening up a broad space for innovation. [0003] At present, magnetic materials that can be used for 3D printing are very rare, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L55/02C08L25/14C08K13/06C08K9/12C08K3/08C08K3/36C08K3/22C08J3/22B33Y70/00
CPCC08L67/04B33Y70/00C08J3/226C08J2367/04C08J2467/04C08K2201/01C08K2201/011C08L2205/025C08L2205/035
Inventor 黎淑娟
Owner 佛山市高明区诚睿基科技有限公司