A 3D printing material based on papermaking sludge and its preparation method and application

Abstract

The invention discloses a 3D printing material based on papermaking sludge and its preparation method and application. The 3D printing material includes the following raw materials in parts by weight: 100 parts of papermaking sludge, 15-25 parts of kaolin, 15-20 parts of cement, quartz 20-25 parts of sand, 6-10 parts of tourmaline powder, 8-12 parts of quicklime powder, 3-7 parts of magnesium nitrate, 25-30 parts of maleic anhydride grafted polylactic acid, 3-7 parts of redispersible latex powder, 1-2 parts of water agent, 1-3 parts of coupling agent, 0.1-1 part of Comamonas terrestris, 0.1-1 part of Flavobacterium, 0.1-0.5 part of Cellulomonas, 0.1-0.5 part of Cellulomonas. For the first time, the present invention uses papermaking sludge as raw material to produce high-strength 3D printing materials that can be rapidly formed. The raw material has wide sources, low cost, turning waste into treasure, and has great application prospects. It opens up new opportunities for the resource development and utilization of papermaking sludge. Based on the idea, the 3D printing materials produced are easy to shape and have high strength.

Description

technical field [0001] The invention belongs to the technical field of sludge resource recycling and utilization, and also relates to the field of 3D printing materials, in particular to a 3D printing material based on papermaking sludge and its preparation method and application. Background technique [0002] Papermaking sludge is solid waste produced in the pulping process, papermaking wastewater treatment process and waste paper deinking process, with high ash content and high cellulose content. In the process of alkaline pulping, lime is generally used as an additive for cooking, and causticization reaction occurs to produce sodium carbonate white mud; in the process of papermaking wastewater treatment, under the action of flocculants, short fibers, lignin in wastewater And its derivatives and organic suspended matter will precipitate, which is called biological sludge; in the deinking process of waste paper, a large amount of deinking sludge will be produced, the main c...

AI Technical Summary

Problems solved by technology

[0003] At present, the direction of resource utilization of papermaking sludge mainly includes biofuels, agricultural fertilizers, soil improvers, flocculants, building materials, etc. For example, the patent application number CN201010510-469.1 discloses a method of using papermaking sludge to produce fuel The method for ethanol is to use papermaking sludge as a carbon source to ferment ethanol; for example, the patent application number CN201310130498.9 discloses a method for producing biomass fuel by using papermaking sludge and domestic sludge, but the ash content of papermaking sludge can be up to 50-70%, when used in boiler industry combustion, the heat energy output rate is low, and it is easy to cause slagging and reduce the service life of the boiler; for example, the patent application number CN201611158297.X discloses an organic Slow-release compound fertilizer, which uses papermaking sludge as the base material to produce compound fertilizer; for example, the patent application number CN201710661378.X discloses a method for producing bio-organic carbon fertilizer by using pulping black liquor; for example, the application number is CN20161112444-8. X's patent discloses a new type of soil conditioner and its preparation method, which uses limestone powder, vermiculite powder, papermaking sludge, etc. Use a soil improver; such as the patent application number CN201510413881.4, which discloses a preparation method for a paper-making sludge-based amphoteric polymer flocculant; such as the patent application number CN201510971055.1, which discloses a polyaluminum ferric chloride- Paper-making sludge-based polymer composite flocculant and its preparation method; such as the patent application number CN200510050528.0, which discloses a method of using paper-making sludge to manufacture building energy-saving bricks, using paper-making sludge and clay raw materials to sinter energy-saving bricks; For example, the patent whose application number is CN2016-10854209.3 discloses a production method of multifunctional plum blossom-shaped papermaking sludge lightweight through-hole ceramsite, using papermaking sludge, high-viscosity attapulgite clay, zeolite, activated clay waste residue, etc. as raw materials to produce ceramics. Granules; such as the patent application number CN201710717150.8, which discloses a method of using papermaking sludge to prepare sintered insulation bricks and block pore-making materials

[0004] In the existing technology, there are no relevant literature and patent reports on the use of papermaking sludge to produce 3D printing materials, which is a blank area of ​​papermaking sludge resource utilization technology, and traditional 3D printing materials generally have slow molding speed, low strength, and easy collapse. and the high cost of raw materials severely restricts the development and promotion of 3D printing technology