CN105057575A - Grapheme-oxide-contained reinforced water-based paint which can form a film easily and used for evaporative pattern casting and preparation method for grapheme-oxide-contained reinforced water-based paint - Google Patents

Grapheme-oxide-contained reinforced water-based paint which can form a film easily and used for evaporative pattern casting and preparation method for grapheme-oxide-contained reinforced water-based paint Download PDF

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Publication number
CN105057575A
CN105057575A CN201510456014.9A CN201510456014A CN105057575A CN 105057575 A CN105057575 A CN 105057575A CN 201510456014 A CN201510456014 A CN 201510456014A CN 105057575 A CN105057575 A CN 105057575A
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China
Prior art keywords
coating
paint
grapheme
oxide
casting
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Pending
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CN201510456014.9A
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Chinese (zh)
Inventor
刘和明
刘和兵
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MINGGUANG CITY LIUXIANG PUMP INDUSTRY Co Ltd
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MINGGUANG CITY LIUXIANG PUMP INDUSTRY Co Ltd
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Priority to CN201510456014.9A priority Critical patent/CN105057575A/en
Publication of CN105057575A publication Critical patent/CN105057575A/en
Pending legal-status Critical Current

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Abstract

The invention relates to the technical field of evaporative pattern casting, in particular to grapheme-oxide-contained reinforced water-based paint which can form a film easily and is used for evaporative pattern casting and a preparation method for the grapheme-oxide-contained reinforced water-based paint. According to the paint, high-alumina bauxite and quartz sand with different particle diameters serve as refractory aggregates, so that the breathability of a coating is improved. The mixed slurry of nanometer attapulgite and sodium carboxymethylcellulose serves as efficient composite suspending agents. Added grapheme oxide can be well dispersed in a solution, so that the film-forming property of the paint on the surface of a plastic pattern is improved. After carnauba wax is dispersed in the coating, the flatness of the surface of the coating is improved, and the sand prevention viscosity is improved. Besides, the carnauba wax can be melted rapidly during casting, so that the breathability of the coating is improved further. The prepared paint is easy to smear and adhere and high in utilization rate. The formed film is firm and tenacious. The dried coating is compact, breathable, good in mechanical property, not prone to sticking to sand and easy to strip after casting, does not pollute molten metal, and effectively improves the quality of a casting.

Description

A kind of easy film forming enhancement mode Water-based coating for lost foam casting containing graphene oxide and preparation method thereof
Technical field
The present invention relates to Technology of EPC field, be specifically related to a kind of easy film forming enhancement mode Water-based coating for lost foam casting containing graphene oxide and preparation method thereof.
Background technology
Refractory Coating for Lost Foam Casting refers to one deck handtailor coating being coated in apperance outer surface in lost foam casting process, it plays critical effect in casting process, because apperance is made up of foamed plastics, the character such as gas permeability, strength of coating, rheological characteristic of coating all will produce vital impact to cast article, the lost foam paint of function admirable should meet: (1) can assist the intensity and rigidity that improve foam plastics mould, prevents apperance from destroying and distortion; (2) there is buffer action, molten metal and model are separated, prevent molten metal from infiltrating in dry sand, prevent cast(ing) surface from forming defect; (3) permeation functions, gets rid of apperance in time and decomposes the gas or liquid that produce, prevent foundry goods from occurring pore, carbon black defect etc.; (4) good sintering fissility, anti-sand viscosity, anti-metal liquid aggressivity etc. will be had; (5) characteristic such as good wetability, being coated with property, the feature of environmental protection, heat endurance, protection against the tide will be had.
Lost foam paint composition mainly comprises the compositions such as refractory aggregate, bonding agent, solvent, suspending agent and various additives, the adhesive properties used by it is divided and is mainly divided into several classes such as water based paint, alcohol-base paint, cold coating, wherein water based paint because cost lower apply in actual production comparatively extensive, but water based paint exists when coating is cleared up easily defeated and dispersed, easy scab, and the serviceability of most of product still existing defects, do not reach foregoing effect.
Summary of the invention
The object of the invention is to, prepare a kind of easy film forming enhancement mode Water-based coating for lost foam casting containing graphene oxide, have easy coating, high strength, highly-breathable to obtain, be easy to peel off the apperance coating of clearing up, to achieve these goals, the technical solution used in the present invention is as follows:
A kind of easy film forming enhancement mode Water-based coating for lost foam casting containing graphene oxide, it is characterized in that, this coating is made up of the raw material of following weight portion: Brazil wax aqueous emulsion 6-8, OP-100.02-0.03 that the graphene oxide water solution 0.1-0.2 that 180-200 height of eye bauxite 40-50, nano-attapulgite 2-3,200-250 order quartz sand 20-25, concentration are 0.1mg/mL, solid content are 30-40%, polyquaternium 0.001-0.002, defoamer 0.01-0.02, white glue with vinyl 2-3, sodium carboxymethylcellulose 0.2-0.3, soft water 25-30.
The preparation method of described a kind of easy film forming enhancement mode Water-based coating for lost foam casting containing graphene oxide, it is characterized in that, described preparation method is:
(1) first OP-10, sodium carboxymethylcellulose are dropped in soft water, be stirred to after dissolving completely, drop into nano-attapulgite, graphene oxide water solution, ultrasonic high-speed stirred makes it dispersed in the solution, add Brazil wax aqueous emulsion more subsequently, be uniformly mixed grinding 30-40min, gained mixed slurry is for subsequent use;
(2) drop in agitator together with the slurry prepared by alumine, quartz sand and the step (1) of 10-15 weight portion, after high-speed stirred dispersion 20-30min, add other leftover materials all again, and add soft water according to required slurry density, continue dispersed with stirring 30-40min again, to obtain final product.
The alumine that coating prepared by the present invention there are differences in order to particle diameter, quartz sand is as refractory aggregate, make the gas permeability of coating excellent, and using nano-attapulgite and sodium carboxymethylcellulose mixed slurry as suspending agent, coating is made to have good suspension and thixotropy, add graphene oxide in the solution can be good dispersion, improve the film forming of coating on plastics apperance surface, the flatness of coating surface can be improved after Brazil wax dispersion in the coating, improve sand control viscosity, and in casting process fast melt, further raising coating's permeability, the coating that this invention prepares is easy to be coated with, and utilization rate is high, and film forming is firmly tough and tensile, and dried coating is compacted ventilative, and mechanical property is good, not easily scab, does not pollute molten metal, and casting terminates rear easy stripping, effectively raises casting quality.
Detailed description of the invention
Embodiment
The coating of the present embodiment is made up of the raw material of following weight portion: Brazil wax aqueous emulsion 7, OP-100.02, polyquaternium 0.001, defoamer 0.01, white glue with vinyl 2.5, sodium carboxymethylcellulose 0.2, soft water 30 that the graphene oxide water solution 0.1 that 200 height of eye bauxites 45, nano-attapulgite 2.5,250 order quartz sand 22, concentration are 0.1mg/mL, solid content are 40%.
The preparation method of this coating is:
(1) first OP-10, sodium carboxymethylcellulose are dropped in soft water, be stirred to after dissolving completely, drop into nano-attapulgite, graphene oxide water solution, ultrasonic high-speed stirred makes it dispersed in the solution, add Brazil wax aqueous emulsion more subsequently, be uniformly mixed grinding 40min, gained mixed slurry is for subsequent use;
(2) drop in agitator together with the slurry prepared by alumine, quartz sand and the step (1) of 10 weight portions, after high-speed stirred dispersion 20min, add other leftover materials all again, and add appropriate soft water, continue dispersed with stirring 40min, adjusting coating density is 65 Baume degrees, to obtain final product.
Coating property test result obtained by the present embodiment is:
Test item Testing result
Strength of coating (0.8mm thick coating) 4.62×10 5Pa
Gas permeability (0.8mm thick coating × 1200 DEG C) 4.50cm 4·(g·min) -1
Suspension (24h) 98%
Once be coated with thickness δ 0.3mm

Claims (2)

1. the easy film forming enhancement mode Water-based coating for lost foam casting containing graphene oxide, it is characterized in that, this coating is made up of the raw material of following weight portion: Brazil wax aqueous emulsion 6-8, OP-100.02-0.03 that the graphene oxide water solution 0.1-0.2 that 180-200 height of eye bauxite 40-50, nano-attapulgite 2-3,200-250 order quartz sand 20-25, concentration are 0.1mg/mL, solid content are 30-40%, polyquaternium 0.001-0.002, defoamer 0.01-0.02, white glue with vinyl 2-3, sodium carboxymethylcellulose 0.2-0.3, soft water 25-30.
2. the preparation method of a kind of easy film forming enhancement mode Water-based coating for lost foam casting containing graphene oxide as claimed in claim 1, it is characterized in that, described preparation method is:
(1) first OP-10, sodium carboxymethylcellulose are dropped in soft water, be stirred to after dissolving completely, drop into nano-attapulgite, graphene oxide water solution, ultrasonic high-speed stirred makes it dispersed in the solution, add Brazil wax aqueous emulsion more subsequently, be uniformly mixed grinding 30-40min, gained mixed slurry is for subsequent use;
(2) drop in agitator together with the slurry prepared by alumine, quartz sand and the step (1) of 10-15 weight portion, after high-speed stirred dispersion 20-30min, then add other leftover materials all, and add soft water according to required slurry density, continue dispersed with stirring 30-40min again, to obtain final product.
CN201510456014.9A 2015-07-27 2015-07-27 Grapheme-oxide-contained reinforced water-based paint which can form a film easily and used for evaporative pattern casting and preparation method for grapheme-oxide-contained reinforced water-based paint Pending CN105057575A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510456014.9A CN105057575A (en) 2015-07-27 2015-07-27 Grapheme-oxide-contained reinforced water-based paint which can form a film easily and used for evaporative pattern casting and preparation method for grapheme-oxide-contained reinforced water-based paint

Applications Claiming Priority (1)

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CN201510456014.9A CN105057575A (en) 2015-07-27 2015-07-27 Grapheme-oxide-contained reinforced water-based paint which can form a film easily and used for evaporative pattern casting and preparation method for grapheme-oxide-contained reinforced water-based paint

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105983648A (en) * 2016-01-11 2016-10-05 明光市留香泵业有限公司 Magnesium borate whisker-reinforced and low-carbon-residue water-based coating for lost foam casting and preparation method of coating
CN110052574A (en) * 2019-05-17 2019-07-26 江苏省特种设备安全监督检验研究院 A kind of cast paint and preparation method thereof based on graphene technology
CN111135754A (en) * 2020-02-18 2020-05-12 关怡 Formaldehyde-removing environment-friendly powder coating

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0413437A (en) * 1990-05-07 1992-01-17 Kawasaki Steel Corp Molding material for casting high melting point active metal
CN102366816A (en) * 2011-10-11 2012-03-07 许立新 Preparation method of water-based coating for lost foam casting
CN103331410A (en) * 2013-01-29 2013-10-02 南京市溧水中山铸造有限公司 Novel coating material with high suspension and low concentration, coating method thereof and applications thereof
CN104174813A (en) * 2014-08-14 2014-12-03 济南圣泉集团股份有限公司 Die release agent and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0413437A (en) * 1990-05-07 1992-01-17 Kawasaki Steel Corp Molding material for casting high melting point active metal
CN102366816A (en) * 2011-10-11 2012-03-07 许立新 Preparation method of water-based coating for lost foam casting
CN103331410A (en) * 2013-01-29 2013-10-02 南京市溧水中山铸造有限公司 Novel coating material with high suspension and low concentration, coating method thereof and applications thereof
CN104174813A (en) * 2014-08-14 2014-12-03 济南圣泉集团股份有限公司 Die release agent and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105983648A (en) * 2016-01-11 2016-10-05 明光市留香泵业有限公司 Magnesium borate whisker-reinforced and low-carbon-residue water-based coating for lost foam casting and preparation method of coating
CN110052574A (en) * 2019-05-17 2019-07-26 江苏省特种设备安全监督检验研究院 A kind of cast paint and preparation method thereof based on graphene technology
CN111135754A (en) * 2020-02-18 2020-05-12 关怡 Formaldehyde-removing environment-friendly powder coating

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Application publication date: 20151118

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