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Graphene modified and enhanced polyurethane composite material for 3D printing

A graphene modification and composite material technology, applied in the direction of additive processing, etc., can solve the problems of unsatisfactory antibacterial, antifouling and self-cleaning functions, enrichment of pollutants, adverse effects on human health, etc., to increase antibacterial and aldehyde removal. Effects, effects that broaden the scope of application

Inactive Publication Date: 2016-10-26
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 humidity, harmful particles and gases in the surrounding environment and air, bacteria are easy to grow on the surface, and pollutants are enriched, which will affect the adverse effects on human health
At present, the antibacterial, anti-fouling and self-cleaning functions of popular 3D printing products and their raw materials on the market are not ideal, and need to be improved

Method used

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  • Graphene modified and enhanced polyurethane composite material for 3D printing

Examples

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preparation example Construction

[0018] (4) The preparation method of graphene / calcium carbonate composite filler is as follows: add 1 part of graphene into 100ml deionized water, disperse for 200min under 800kW ultrasonic vibration and 1300r / min centrifugal speed stirring to prepare graphene dispersion; Add a portion of quantum dot calcium carbonate to 500ml of deionized water, and disperse for 300 minutes under 1300kW ultrasonic vibration and 1500r / min centrifugal speed stirring to prepare a calcium carbonate dispersion; slowly drop the calcium carbonate dispersion into the graphene dispersion under 100kW ultrasound , Ultrasonic for 60min, then suction filtration and drying to prepare graphene / calcium carbonate composite filler.

[0019] (5) The nano silver / TiO 2 The preparation method of antibacterial material is as follows: to 200ml 0.01mol·L -1 HNO 3 Add 0.79g AgNO to the solution 3 , 5g TiO 2 Nanotubes, 0.5g dispersant sodium cetyl sulfonate, ultrasonically dispersed for 60 minutes, and then magnetically st...

Embodiment 1

[0024] A graphene modified reinforced polyurethane composite material for 3D printing, which is composed of the following raw materials in parts by weight: 100 parts of polyurethane, 8 parts of composite filler, 2 parts of functional materials, 0.2 parts of light stabilizer, 5 parts of coupling agent, 0.1 part of leveling agent, 3 parts of dispersion lubricant and 0.5 part of antioxidant. The composite filler is composed of graphene / SiO in a weight ratio of 3:2 2 Composite filler and graphene / calcium carbonate composite filler.

[0025] The preparation method of the composite material includes the following steps:

[0026] (1) Pretreatment of polyurethane raw materials: pulverize the polyurethane raw materials into 300 mesh powder, disperse them in pure water, ultrasonic (power 300W) for 1 hour, and irradiate with microwave (2500MHz, temperature controlled at 85°C) while ultrasonic for 1 hour; Stop ultrasonic and microwave irradiation, washing, discharging, and drying to obtain pr...

Embodiment 2

[0032] Based on Example 1, the difference is: 1 part of functional material. The tensile strength of the prepared polyurethane composite material is 24.05MPa, and the Young's modulus is 0.05GPa.

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Abstract

The invention discloses a graphene modified and enhanced polyurethane composite material for 3D printing. The graphene modified and enhanced polyurethane composite material is prepared from the following raw materials in parts by weight: 90 to 100 parts of polyurethane, 5 to 10 parts of composite packing, 1 to 5 parts of a functional material, graphene quantum dots and porous graphene, 0.1 to 1 part of a light stabilizer, 5 to 10 parts of a coupling agent, 0.1 to 2 parts of a leveling agent, 1 to 6 parts of a dispersion lubricating agent and 0.1 to 1 part of an antioxidant, wherein the functional material comprises a nano silver / TiO2 antibacterial material and a multi-wall carbon nano tube / nano ZnO formaldehyde removal material; the graphene quantum dots account for 0.5 to 1 percent of the weight of polyurethane, and the porous graphene accounts for 0.5 to 2 percent of the weight of polyurethane. According to the graphene modified and enhanced polyurethane composite material for 3D printing, by the use of the adsorption and slow release functions of kieselguhr and a capsule slow release technology, the antibacterial and formaldehyde removal materials are stored in kieselguhr and then slowly released, to enhance the antibacterial and formaldehyde removal effects of a product to the maximum extent; furthermore, the prepared thermoplastic polyurethane composite material is further high in toughness and excellent in mechanical property, so that the application range of 3D printing is further expanded.

Description

Technical field [0001] The invention relates to the field of composite materials, in particular to a graphene modified and reinforced polyurethane 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. It is based on digital model files, using powdered metal or plastic and other bondable materials to print layer by layer. Ways to construct the technology of objects. The basic principle is the technology of laminated manufacturing, adding materials layer by layer to generate three-dimensional entities. At present, 3D printing technology is mainly used in product prototypes, mold manufacturing, artistic creation, jewelry making and other fields to replace these traditional fine processing techniques. In addition, 3D printing technology has gradually been applied in the fields of medicine, bioengineering, architecture, clothing, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K13/06C08K9/10C08K3/34C08K3/08C08K7/24C08K3/22C08K3/04C08K3/36C08K3/26C08J3/22B33Y70/00B29B9/00B29C47/00
CPCC08L75/04B29B9/00B29C48/05B33Y70/00C08J3/226C08J2375/04C08J2475/04C08K2201/011C08K2201/014C08L2205/025C08L2205/035C08K13/06C08K9/10C08K3/34C08K2003/0806C08K2003/2241C08K7/24C08K2003/2296C08K3/04C08K3/36C08K2003/265
Inventor 黎淑娟
Owner 佛山市高明区诚睿基科技有限公司
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