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Oxidized graphene modified 3D printing resin and manufacturing method thereof

A graphene modification and 3D printing technology, which is applied in the direction of additive processing, etc., can solve the problems of not meeting 3D sand printing, high storage environment requirements, and short shelf life of binders, so as to eliminate sticky sand defects and feed shrinkage Excellent performance, the effect of solving casting defects

Inactive Publication Date: 2017-03-29
GANSU KOCEL CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional cast steel no-bake resin binder is mainly alkaline phenolic resin, because the 3D sand printing system has high requirements on the viscosity of the resin (<15mpa.s, 25°C), high viscosity will block the print head, resulting in printing head distortion
Alkaline phenolic resin cannot meet the needs of 3D sand printing due to its high viscosity, and this kind of binder has a short shelf life and has high requirements for storage environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A graphene oxide modified resin for 3D printing, its production raw materials are: 10% phenol, 2% formic acid, 55% furfuryl alcohol, 16% formaldehyde, 10% resorcinol, 5% graphene oxide, and 1 coupling agent % and ethylene urea 1%.

[0023] A kind of production method of graphene oxide modified 3D printing resin, its preparation process is:

[0024] (1) Put 10% of molten phenol, 16% of formaldehyde, and 50% of furfuryl alcohol into the reaction kettle, add 2% of formic acid solution, start stirring, inject steam pressure of 0.1-0.2MPa, and the reaction temperature is 80-110°C;

[0025] (2) Add 5% graphene oxide to the polymer produced in the first step, pass in steam, and keep warm for 1-3h;

[0026] (3) After heat preservation for 1-3h, transfer to a vacuum distillation kettle, and vacuum distillation and dehydration for 1-2h at a temperature of 60-80°C and a vacuum of 0.05-0.095MPa;

[0027] (4) After distillation and dehydration, add 10% resorcinol to it, raise the ...

Embodiment 2

[0030] A graphene oxide modified resin for 3D printing, its production raw materials are: 7% phenol, 2.5% formic acid, 52% furfuryl alcohol, 19% formaldehyde, 12% resorcinol, 6% graphene oxide, 0.5% coupling agent % and ethylene urea 1%.

[0031] A kind of production method of graphene oxide modified 3D printing resin, its preparation process is:

[0032] (1) Put 7% of molten phenol, 19% of formaldehyde, and 50% of furfuryl alcohol into the reaction kettle, add 2.5% of formic acid solution, start stirring, inject steam pressure of 0.1-0.2MPa, and the reaction temperature is 80-110°C;

[0033] (2) Add 6% graphene oxide to the polymer produced in the first step, pass in steam, and keep warm for 1-3h;

[0034] (3) After heat preservation for 1-3h, transfer to a vacuum distillation kettle, and vacuum distillation and dehydration for 1-2h at a temperature of 60-80°C and a vacuum of 0.05-0.095MPa;

[0035] (4) After distillation and dehydration, add 12% resorcinol to it, raise the...

Embodiment 3

[0038] A graphene oxide modified resin for 3D printing, the raw materials of which are: 9% phenol, 1.5% formic acid, 64% furfuryl alcohol, 13% formaldehyde, 8% resorcinol, 3% graphene oxide, and 0.7% coupling agent % and ethylene urea 0.8%.

[0039] A kind of production method of graphene oxide modified 3D printing resin, its preparation process is:

[0040] (1) Put 9% of molten phenol, 13% of formaldehyde, and 60% of furfuryl alcohol into the reaction kettle, add 1.5% of formic acid solution, start stirring, feed steam pressure 0.1-0.2MPa, and the reaction temperature is 80-110°C;

[0041] (2) Add 3% graphene oxide to the polymer produced in the first step, pass in steam, and keep warm for 1-3h;

[0042] (3) After heat preservation for 1-3h, transfer to a vacuum distillation kettle, and vacuum distillation and dehydration for 1-2h at a temperature of 60-80°C and a vacuum of 0.05-0.095MPa;

[0043] (4) After distillation and dehydration, add 8% resorcinol to it, raise the te...

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Abstract

The invention relates to the field of casting auxiliaries materials, in particular to a manufacturing method of an oxidized graphene modified 3D printing resin. The graphene modified 3D printing resin is prepared from, 7-13% of phenol, 1.5-2.5% of formic acid, 45-65% of furfuryl alcohol, 13-19% of formaldehyde, 7-13% of resorcinol, 3-7% of oxidized graphene, 0.5-1.5% of coupling agent and 0.5-1.5% of ethylene urea. Aimed at the problem in the prior art that a traditional resin for steel casting exits deficiences in 3D foundry sand printing, the oxidized graphene is creatively introduced, and thus the problem of sand burning in the steel casting is fundamentally solved; in addition, the oxidized graphene modified 3D printing resin can be used for conducting moulding on a sand mould with high heat resistance and high rigidity, can be used in a more complicated and thinner high-end casting, is stable in chemical properties, applicable to 3D printing technologies, high in strength of the foundry sand, simple and convenient to operate, and excellent in anti-sand burning performance.

Description

technical field [0001] The invention relates to the field of casting auxiliary materials, in particular to a graphene oxide modified 3D printing resin and a production method thereof. Background technique [0002] Product manufacturing in the traditional sense mostly uses molds to form raw materials into blanks, and then uses methods such as machining to remove excess materials and form them into parts of required dimensions, which can be called "subtractive manufacturing method". On the contrary, 3D molding technology is to manufacture three-dimensional product entities by adding materials layer by layer, which is defined as "additive manufacturing" method. 3D printing technology has the advantages of material saving, high efficiency, and design freedom. It has a history of more than 20 years in Europe and the United States, and has been deeply involved in the field of industrial manufacturing. [0003] The traditional cast steel no-bake resin binder is mainly alkaline phe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/14C08L61/14C08K3/04C08G65/36C08G65/48C08G8/28B33Y70/00
CPCC08L71/14B33Y70/00C08G8/28C08G65/36C08G65/48C08L61/14C08L2201/08C08K3/04
Inventor 方建涛邢金龙张茜
Owner GANSU KOCEL CHEM
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