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Antibacterial and aldehyde-removing polyurethane composite material for 3D printing

A composite material and 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of antibacterial, antifouling and self-cleaning functions, enrichment of pollutants, adverse effects on human health, etc., to increase antibacterial and aldehyde removal effects, The effect of widening the range of application

Inactive Publication Date: 2016-12-14
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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  • Antibacterial and aldehyde-removing polyurethane composite material for 3D printing

Examples

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preparation example Construction

[0019] (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.

[0020] (5) The nano-silver / TiO 2 The preparation method of antibacterial material is as follows: add 0.01mol L to 200ml -1 HNO 3 Add 0.79g AgNO to the solution respectively 3 , 5g TiO 2 Nanotubes, 0.5g dispersant sodium hexadecyl sulfonate, ultrasonically dispersed for 60min, then magnetical...

Embodiment 1

[0025] An antibacterial and aldehyde-removing polyurethane composite material for 3D printing, which consists of the following raw materials in parts by weight: 100 parts of polyurethane, 8 parts of composite filler, 2 parts of functional material, 0.2 part of light stabilizer, 5 parts of coupling agent, fluid 0.1 part of leveling agent, 3 parts of dispersing lubricant and 0.5 part of antioxidant. The composite filler is composed of graphene / SiO in a weight ratio of 3:2 2 The composite filler is composed of graphene / calcium carbonate composite filler.

[0026] The preparation method of this composite material comprises the following steps:

[0027] (1) Pretreatment of polyurethane raw materials: pulverize polyurethane raw materials into 300-mesh powder, disperse them in pure water, ultrasonic (power 300W) for 1 hour, and microwave irradiation (2500MHz, temperature controlled at 85°C) for 1 hour while ultrasonic; Stop ultrasonic and microwave irradiation, wash, discharge, and...

Embodiment 2

[0033] 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 an antibacterial and aldehyde-removing polyurethane composite material for 3D printing. The composite material is composed of the following raw materials in parts by weight: 90 to 100 parts of polyurethane, 5 to 10 parts of composite filling material, 1 to 5 parts of functional material, 0 to 5 parts of graphene, 0.1 to 1 part of light stabilizer, 5 to 10 parts of coupling agent, 0.1 to 2 parts of leveling agent, 1 to 6 parts of dispersed lubricating agent, and 0.1 to 1 part of antioxidant; wherein the functional material comprises a nano silver / TiO2 antibacterial material and a multi-walled carbon nanotube / nano ZnO aldehyde-removing material. By using the adsorption and sustained-release function of diatomite and a capsule sustained-release technology, the antibacterial material and the aldehyde-removing material are stored in diatomite and released slowly; the antibacterial and aldehyde-removing effect is maximally enhanced; moreover, the prepared thermoplastic polyurethane composite material has excellent flexibility and mechanical properties, and the application range of 3D printing is further enlarged.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to an antibacterial and aldehyde-removing 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. 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. However, during the storage, transportation and use of products...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08K13/06C08K9/12C08K9/10C08K3/04C08K3/36C08K3/08C08K3/22C08K3/26C08K7/24C08J3/22B33Y70/00
CPCC08L75/04B33Y70/00C08J3/226C08J2375/04C08J2475/04C08K2201/011C08K2201/014C08L2205/025C08L2205/03C08K13/06C08K9/12C08K9/10C08K3/04C08K3/36C08K2003/0806C08K2003/2241C08K2003/265C08K7/24C08K2003/2296
Inventor 黎淑娟
Owner 佛山市高明区诚睿基科技有限公司
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