CN105983648A - Magnesium borate whisker-reinforced and low-carbon-residue water-based coating for lost foam casting and preparation method of coating - Google Patents

Magnesium borate whisker-reinforced and low-carbon-residue water-based coating for lost foam casting and preparation method of coating Download PDF

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Publication number
CN105983648A
CN105983648A CN201610021211.2A CN201610021211A CN105983648A CN 105983648 A CN105983648 A CN 105983648A CN 201610021211 A CN201610021211 A CN 201610021211A CN 105983648 A CN105983648 A CN 105983648A
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CN
China
Prior art keywords
coating
nano
magnesium borate
lost foam
foam casting
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Pending
Application number
CN201610021211.2A
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Chinese (zh)
Inventor
刘和明
刘和兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MINGGUANG CITY LIUXIANG PUMP INDUSTRY Co Ltd
Original Assignee
MINGGUANG CITY LIUXIANG PUMP INDUSTRY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MINGGUANG CITY LIUXIANG PUMP INDUSTRY Co Ltd filed Critical MINGGUANG CITY LIUXIANG PUMP INDUSTRY Co Ltd
Priority to CN201610021211.2A priority Critical patent/CN105983648A/en
Publication of CN105983648A publication Critical patent/CN105983648A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C3/00Selection of compositions for coating the surfaces of moulds, cores, or patterns
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/02Sand moulds or like moulds for shaped castings
    • B22C9/04Use of lost patterns

Abstract

The invention relates to the technical field of lost foam casting, in particular to a magnesium borate whisker-reinforced and low-carbon-residue water-based coating for lost foam casting and a preparation method of the coating. According to the coating, mixed nano quartz sand and high-aluminum alumina which have different particle sizes are taken as refractory aggregate and have the good gas permeability and high-temperature stability, a mixed suspending agent prepared from materials such as nano calcium carbonate, sodium carboxymethylcellulose and the like effectively improves the liquidity and the smearing property of the coating, mixed magnesium borate whiskers have the characteristics of light mass, high strength and the like, the reinforcing effect is excellent, added nano cerium dioxide has the oxygen storage capacity, oxygen can be released in the casting process, the oxidation combustion efficiency of plastic is improved, and carbon residues are reduced; the prepared coating has the high coating strength and is not prone to collapse and breakage, high in heat stability, compact, gas-permeable and easy to peel and clean, prepared castings have less surface impurities, and the quality is higher.

Description

Low carbon residue Water-based coating for lost foam casting that a kind of magnesium borate crystal whisker strengthens and preparation method thereof
Technical field
The present invention relates to Technology of EPC field, the low carbon residue being specifically related to the enhancing of a kind of magnesium borate crystal whisker disappears Lost pattern casting water based paint and preparation method thereof.
Background technology
Refractory Coating for Lost Foam Casting refers to be coated in one layer of special coating of apperance outer surface during lost foam casting, It plays critical effect in casting process, owing to apperance is made up of foam plastics, and coating ventilative Property, the character such as strength of coating, rheological characteristic all cast article will be produced vital impact, function admirable Lost foam paint it suffices that: (1) can assist and improve the intensity of foam plastics mould and rigidity, prevents mould Sample destroys and deformation;(2) there is buffer action, molten metal separated with model, prevent molten metal from penetrating 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 produced, Prevent foundry goods from pore, carbon black defect etc. occurring;(4) there are good sintering fissility, anti-sand viscosity, anti-gold Belong to liquid aggressivity etc.;(5) there are the spies such as good wettability, being coated with property, the feature of environmental protection, heat stability, protection against the tide Property.
Lost foam paint composition mainly includes refractory aggregate, bonding agent, solvent, suspending agent and various additives Deng composition, divide by its adhesive properties used and be broadly divided into water based paint, alcohol-base paint, cold coating etc. Several classes, wherein water based paint is applied relatively broad because cost is relatively low in actual production, but water based paint is deposited When coating is cleared up the most defeated and dispersed, easy scab, and major part product serviceability still suffer from defect, reach not To foregoing effect.
Summary of the invention
It is an object of the invention to, prepare the low water base painting of carbon residue dispellable mould casting that a kind of magnesium borate crystal whisker strengthens Material, to obtain the apperance coating with high intensity, highly-breathable, low carbon residue, thus improves casting quality, for Realizing above-mentioned purpose, the technical solution used in the present invention is as follows:
The low carbon residue Water-based coating for lost foam casting that a kind of magnesium borate crystal whisker strengthens, it is characterised in that this coating It is made up of the raw material of following weight portion: nano quartz sand 18-25, nano-calcium carbonate 5-8,200-250 height of eye Bauxite 40-50, magnesium borate crystal whisker 2-3, nanometer meerschaum 1-2, white glue with vinyl 1-2, water-borne acrylic resin 1-1.5, sodium lignin sulfonate 0.01-0.02, peregal 0.01-0.02, nano ceric oxide 0.01-0.02, Sodium carboxymethyl cellulose 0.1-0.2, preservative 0.001-0.002, defoamer 0.01-0.02, soft water 30-40.
The preparation method of the low carbon residue Water-based coating for lost foam casting that described a kind of magnesium borate crystal whisker strengthens, its Being characterised by, described preparation method is:
(1) first putting in soft water by sodium lignin sulfonate, peregal, sodium carboxymethyl cellulose, stirring is to completely After dissolving, putting into nano-calcium carbonate, nano ceric oxide, magnesium borate crystal whisker, ultrasonic high-speed stirred makes it molten In liquid dispersed, add nanometer meerschaum subsequently, mixed grinding dispersion 30-40min, gained mixing slurry Expect standby;
(2) together with the slurry that nano quartz sand, alumine are prepared with the step (1) of 20-25 weight portion Put in agitator, after high-speed stirred dispersion 30-40min, add other leftover materials all, and according to Required slurry density adds soft water, is further continued for dispersed with stirring 40-50min, to obtain final product.
Nano quartz sand, alumine that coating of the present invention there are differences using particle diameter mix as refractory aggregate, tool There are good breathability and high-temperature stability, with prepared by the material such as nano-calcium carbonate, sodium carboxymethyl cellulose mixing Closing suspending agent and effectively raise the mobility of coating and being coated with property, the magnesium borate crystal whisker of blending has lightweight, high-strength The characteristics such as degree, reinforced effects is excellent, and the nano ceric oxide of addition has oxygen storage capacity, can release in casting process Put oxygen, improve the oxidizing fire efficiency of plastics, reduce carbon residue;Paint coatings intensity prepared by this invention is high, Being difficult to subside and rupture, heat stability is high, compacts ventilative, it is easy to peeling off cleaning, the cast(ing) surface impurity of preparation is more Few, quality is more preferably.
Detailed description of the invention
Embodiment
The coating of the present embodiment is made up of the raw material of following weight portion: nano quartz sand 20, nano-calcium carbonate 6, 200 height of eye bauxites 45, magnesium borate crystal whisker 2.5, nanometer meerschaum 1.5, white glue with vinyl 1.5, aqueous acrylamide Acid resin 1.5, sodium lignin sulfonate 0.01, peregal 0.01, nano ceric oxide 0.01, carboxymethyl are fine Dimension element sodium 0.1, preservative 0.001, defoamer 0.01, soft water 35.
The preparation method of this coating is:
(1) first putting in soft water by sodium lignin sulfonate, peregal, sodium carboxymethyl cellulose, stirring is to completely After dissolving, putting into nano-calcium carbonate, nano ceric oxide, magnesium borate crystal whisker, ultrasonic high-speed stirred makes it molten In liquid dispersed, add nanometer meerschaum subsequently, mixed grinding dispersion 35min, gained mixed slurry is standby With;
(2) put into together with the slurry that nano quartz sand, alumine are prepared with the step (1) of 20 weight portions In agitator, after high-speed stirred dispersion 30min, add other leftover materials all, and add appropriate soft Water, continues dispersed with stirring 40min, and adjusting coating density is 60 Baume degrees, to obtain final product.
Coating property test result obtained by the present embodiment is:
Detection project Testing result
Strength of coating (0.8mm thick coating) 4.72×105Pa
Breathability (0.8mm thick coating × 1200 DEG C) 4.12cm4·(g·min)-1
Suspension (24h) 98%
Once it is coated with thickness δ 0.3mm
High temperature cracking resistance grade One-level

Claims (2)

1. the low carbon residue Water-based coating for lost foam casting that a magnesium borate crystal whisker strengthens, it is characterized in that, this coating is made up of the raw material of following weight portion: nano quartz sand 18-25, nano-calcium carbonate 5-8,200-250 height of eye bauxite 40-50, magnesium borate crystal whisker 2-3, nanometer meerschaum 1-2, white glue with vinyl 1-2, water-borne acrylic resin 1-1.5, sodium lignin sulfonate 0.01-0.02, peregal 0.01-0.02, nano ceric oxide 0.01-0.02, sodium carboxymethyl cellulose 0.1-0.2, preservative 0.001-0.002, defoamer 0.01-0.02, soft water 30-40.
The preparation method of the low carbon residue Water-based coating for lost foam casting that a kind of magnesium borate crystal whisker the most as claimed in claim 1 strengthens, it is characterised in that described preparation method is:
(1) first sodium lignin sulfonate, peregal, sodium carboxymethyl cellulose are put in soft water, stir to after being completely dissolved, put into nano-calcium carbonate, nano ceric oxide, magnesium borate crystal whisker, ultrasonic high-speed stirred makes it the most dispersed, add nanometer meerschaum subsequently, mixed grinding dispersion 30-40min, gained mixed slurry is standby;
(2) put in agitator together with the slurry that nano quartz sand, alumine are prepared with the step (1) of 20-25 weight portion, after high-speed stirred dispersion 30-40min, add other leftover materials all, and add soft water according to required slurry density, it is further continued for dispersed with stirring 40-50min, to obtain final product.
CN201610021211.2A 2016-01-11 2016-01-11 Magnesium borate whisker-reinforced and low-carbon-residue water-based coating for lost foam casting and preparation method of coating Pending CN105983648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610021211.2A CN105983648A (en) 2016-01-11 2016-01-11 Magnesium borate whisker-reinforced and low-carbon-residue water-based coating for lost foam casting and preparation method of coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610021211.2A CN105983648A (en) 2016-01-11 2016-01-11 Magnesium borate whisker-reinforced and low-carbon-residue water-based coating for lost foam casting and preparation method of coating

Publications (1)

Publication Number Publication Date
CN105983648A true CN105983648A (en) 2016-10-05

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101735674A (en) * 2010-01-07 2010-06-16 中国人民解放军海军后勤技术装备研究所 Aqueous inorganic zinc-enriched coating and preparation method thereof
CN104496497A (en) * 2014-12-15 2015-04-08 滁州金诺实业有限公司 Heat-insulation fireproof coating applied to pre-buried pipe of vacuum cast aluminium alloy casting
CN105057575A (en) * 2015-07-27 2015-11-18 明光市留香泵业有限公司 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
CN105057569A (en) * 2015-07-27 2015-11-18 明光市留香泵业有限公司 Water-based paint containing nano-zinc oxide and with enhanced high heat retaining property for evanescent mold casting and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101735674A (en) * 2010-01-07 2010-06-16 中国人民解放军海军后勤技术装备研究所 Aqueous inorganic zinc-enriched coating and preparation method thereof
CN104496497A (en) * 2014-12-15 2015-04-08 滁州金诺实业有限公司 Heat-insulation fireproof coating applied to pre-buried pipe of vacuum cast aluminium alloy casting
CN105057575A (en) * 2015-07-27 2015-11-18 明光市留香泵业有限公司 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
CN105057569A (en) * 2015-07-27 2015-11-18 明光市留香泵业有限公司 Water-based paint containing nano-zinc oxide and with enhanced high heat retaining property for evanescent mold casting and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
中国科学技术协会: "《2012-2013化学学科发展报告》", 28 February 2014, 中国科学技术出版社 *
罗振: "《第四次工业革命 纳米技术》", 31 July 2014, 吉林人民出版社 *

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