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A composite 3D printing material containing coffee grounds and its preparation method and application

A technology of 3D printing and coffee grounds, which is applied in the field of additive manufacturing, can solve problems affecting material performance and printing performance, 3D printing filaments are hollow, and materials cannot be printed, so as to reduce the cost of consumables, meet functional requirements, and print success rate high effect

Active Publication Date: 2022-08-09
张晓军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the melt index, impurities, and crystallization points of the material may cause the material to be unable to print. Therefore, when there are other solid particles such as wood, coffee grounds, copper powder, and aluminum powder in the 3D composite printing material, uniform dispersion is the most critical and difficult. One of the problems to be solved; if the above solid particles cannot be dispersed evenly to form an agglomeration reaction, the agglomeration position of the solid material will form the following similar situations: A) Exceeding the wire diameter tolerance, printing failure due to jamming; B) Agglomeration will form Similar "impurities" make it impossible to pass through the 0.4mm nozzle, causing the nozzle to be clogged and printing to fail
Therefore, if various wood powders, coffee powders, aluminum powders, etc. cannot be effectively modified, there may be hollow and swelling inside the 3D printing filament during the extrusion process, which will seriously affect the material. performance and printing performance

Method used

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  • A composite 3D printing material containing coffee grounds and its preparation method and application
  • A composite 3D printing material containing coffee grounds and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The composite 3D printing material of this embodiment is made of the following raw materials by weight: 20 parts of modified coffee grounds, 80 parts of polylactic acid, 3 parts of polycaprolactone, 20 parts of polyhydroxyalkanoate and 2 parts of plasticizer Wherein, the modified coffee grounds are obtained by modifying the coffee grounds raw material by using a mixed solution containing a water-soluble polyester and a coupling agent, and the water-soluble polyester includes the first water-soluble polyester (purchased from Henan Xingguang Resin Co., Ltd. ) and the second water-soluble polyester (Korean water-soluble polyester SK375), the coupling agent is titanate coupling agent, and the plasticizer is DOP.

[0036] The preparation steps of the above composite 3D printing material are as follows:

[0037] 1. Pretreatment of coffee grounds

[0038]The collected coffee grounds are screened to remove impurities such as non-coffee grounds, and then vacuum equipment is use...

Embodiment 2

[0046] The composite 3D printing material of this embodiment is made from the following raw materials by weight: 35 parts of modified coffee grounds, 65 parts of polylactic acid, 2 parts of polycaprolactone, 15 parts of polyhydroxyalkanoate and 1 part of plasticizer ; Among them, the modified coffee grounds are obtained by modifying the coffee grounds raw materials with a mixed solution containing a water-soluble polyester and a coupling agent, the water-soluble polyester is a water-soluble polyester SK375, and the coupling agent is a titanate coupling agent. The plasticizer is DOP.

[0047] The preparation steps of the above composite 3D printing material are as follows:

[0048] 1. Pretreatment of coffee grounds

[0049] The collected coffee grounds are screened to remove impurities such as non-coffee grounds, and then vacuum equipment is used for preliminary drying; the dried coffee grounds are mixed evenly, and then the coffee grounds are ground into powder by a grinder, ...

Embodiment 3

[0057] The composite 3D printing material of this embodiment is made from the following raw materials by weight: 45 parts of modified coffee grounds, 55 parts of polylactic acid, 4 parts of polycaprolactone, 25 parts of polyhydroxyalkanoate and 3 parts of plasticizer ; Wherein, the modified coffee grounds are obtained by modifying the coffee grounds raw materials with a mixed solution containing a water-soluble polyester and a coupling agent. The water-soluble polyester is purchased from Henan Xingguang Resin Co., Ltd., and the coupling agent is a silane coupling agent. Agent KH570, plasticizer is epoxidized soybean oil.

[0058] The preparation steps of the above composite 3D printing material are as follows:

[0059] 1. Pretreatment of coffee grounds

[0060] The collected coffee grounds are screened to remove impurities such as non-coffee grounds, and then vacuum equipment is used for preliminary drying; the dried coffee grounds are mixed evenly, and then the coffee ground...

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Abstract

The invention provides a composite 3D printing material containing coffee grounds and a preparation method and application thereof. The composite 3D printing material of the present invention comprises the following raw materials by weight: 10-55 parts of modified coffee grounds, 45-90 parts of polylactic acid, 1-5 parts of polycaprolactone, 10-30 parts of polyhydroxyalkanoate and 1-3 parts of a plasticizer; wherein, the modified coffee grounds are obtained by modifying the raw coffee grounds with a mixed solution containing a water-soluble polyester and a coupling agent. The invention can make high-value utilization of waste coffee grounds, which is not only conducive to protecting the environment, but also greatly reduces the cost of consumables, and has significant social and economic benefits; in addition, the above-mentioned composite 3D printing materials containing coffee grounds can well meet the needs of daily life. The functional requirements of 3D printing, the comprehensive performance of printed products are excellent, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a composite 3D printing material containing coffee grounds and a preparation method and application thereof. Background technique [0002] Coffee is a beverage made from roasted and ground coffee beans, and together with cocoa and tea, it is the main beverage popular in the world. The world consumes at least 400 billion cups of coffee every year. If a cup of 350ml medium cup of freshly ground coffee produces about 20 grams of coffee grounds, 8 million tons of coffee grounds will be produced every year. Take a pack of 25kg of rice as an example, The world produces at least 320 million bags of rice-sized waste coffee grounds a year. Currently, most of the world's coffee grounds are discarded, landfilled or incinerated along with other waste. This cost-increasing disposal method will not only generate more greenhouse gases such as carbon dioxide and nitric oxide, but...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L99/00C08L91/00C08K5/12C08H99/00B33Y70/10B33Y80/00
CPCC08L67/04C08H99/00B33Y70/10B33Y80/00C08L99/00C08K5/12C08L91/00Y02W90/10
Inventor 张晓军韩民峰贾玲玉何督督傅文军
Owner 张晓军