CN105817571A - Anti-sagging modified quartz-based mica powder full mold paint and preparation method thereof - Google Patents
Anti-sagging modified quartz-based mica powder full mold paint and preparation method thereof Download PDFInfo
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- CN105817571A CN105817571A CN201610359413.8A CN201610359413A CN105817571A CN 105817571 A CN105817571 A CN 105817571A CN 201610359413 A CN201610359413 A CN 201610359413A CN 105817571 A CN105817571 A CN 105817571A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
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Abstract
The invention discloses anti-sagging modified quartz-based mica powder full mold paint. The anti-sagging modified quartz-based mica powder full mold paint is prepared from, by weight, 100-102 parts of quartz powder, 0.9-1.1 parts of modified starch, 0.9-1.1 parts of carboxymethylcellulose, 2.4-2.6 parts of sodium bentonite, 0.9-1 part of mica powder, 0.8-0.9 part of tetrapod-like zinc oxide whiskers, 0.9-1.1 parts of silica sol, 10-13 parts of ethanol, a proper amount of water, 0.3-0.4 part of lithium chloride sol, 1.2-1.4 parts of ferroceneboronic acid and 1.5-1.6 parts of nano tungsten trioxide. According to the anti-sagging modified quartz-based mica powder full mold paint, the lithium chloride sol, the ferroceneboronic acid and the nano tungsten trioxide are used for modifying the sodium bentonite, and the surface and gaps of the bentonite are filled with the ferroceneboronic acid and the nano tungsten trioxide, so that the excellent wettability and adhesivity of the bentonite are achieved, and the sag resistance and high-temperature strength of the paint are improved.
Description
Technical field
The present invention relates to lost foam paint technical field, particularly relate to a kind of anti-sag mica powder modification quartz group lost mould coating and preparation method thereof.
Background technology
Lost foam casting is the foundry engieering of a kind of Near net shape, and coating is the key point of lost foam casting, and the quality of coating property is directly connected to the quality of foundry goods.Lost foam paint is typically made up of refractory aggregate, binding agent, suspending agent, carrier, additive.Silica flour is widely used on lost foam casting as refractory aggregate cheap and easy to get, but because sintering character is poor so that it is application receives certain restriction.And the principle that lost foam paint is at the beginning of design should sinter exactly, peel off again.If sintering character can be poor under pouring temperature for refractory aggregate, then can not form the liquid phase of q.s.So coating cannot form densification and have the sinter layer of sufficient intensity, bears incessantly molten metal washing away when cast, corrosion function, and molten metal can pass through coating erosion casting mold, and foundry goods is easily generated the defects such as scab.Even if not causing scab the most easily to produce coating be bonded at the phenomenon being not easily stripped on foundry goods.The major measure improving lost foam paint sintering character has: 1. introduce suitable sintering aid, utilizes the liquid phase that sintering aid is formed, and reaches the purpose accelerating material diffusion with acceleration of sintering；2. formed composite aggregate, fusing point reduction and the temperature starting to sinter by the refractory aggregate that fusing point is different also to decrease.If selecting suitable composite aggregate and proportioning, then coating can be made to produce a certain degree of sintering under pouring temperature.This problem uses mica powder to improve the sintering character of quartz group lost mould coating as sintering aid." mica powder impact on quartz group lost mould coating sintering character " literary composition have developed a kind of lost foam paint with high refractoriness and low grade fever's node, and this coating has good sintering character and stripping performance.
But Muscovitum bad dispersibility in coating, suspension are poor, easily cause the bending strength after sintering uneven, and stripping performance is the most uneven, and Muscovitum slabbing, can obstructing air holes, affect gas and discharges, cause bleb phenomenon, need improvement.
Additionally also need to improve the problems such as the hardness of coating, compactness, elevated temperature strength, crack resistance, breathability, bending strength, sag resistance, brushing performance, agglutinating property along with the progress of foundry engieering.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of anti-sag mica powder modification quartz group lost mould coating and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of anti-sag mica powder modification quartz group lost mould coating, is prepared by the raw materials in: silica flour 100-102, modified starch 0.9-1.1, carboxymethyl cellulose 0.9-1.1, sodium bentonite 2.4-2.6, mica powder 0.9-1, four acicular type zinc oxide crystal whisker 0.8-0.9, Ludox 0.9-1.1, ethanol 10-13, water are appropriate, lithium chloride colloidal sol 0.3-0.4, ferrocene boric acid 1.2-1.4, nano tungsten trioxide 1.5-1.6.
The preparation method of described anti-sag mica powder modification quartz group lost mould coating, comprises the following steps:
(1) Ludox is added in ethanol, stir, add mica powder to stir, be heated to 60-70 DEG C, add four acicular type zinc oxide crystal whisker while stirring, it is heated to 70-75 DEG C, ultrasonic disperse 3-4 minute, continues stirring complete to ethanol volatilization, pulverizes, cross 100-150 mesh sieve, obtain modified micaceous powder；
(2) sodium bentonite is mixed with lithium chloride colloidal sol, ferrocene boric acid, nano tungsten trioxide, grind uniformly, obtain mixed material；
(3) modified starch, carboxymethyl cellulose are added to the water, stir, add described modified micaceous powder and the mixed material of (2nd) step, stir, obtain mixed material；
(4) described mixed material and other leftover materials are mixed into pasty state, to obtain final product.
The invention have the advantage that the present invention uses Ludox, four acicular type zinc oxide crystal whisker to be modified mica powder, define on mica powder surface nano silicon and and four acicular type zinc oxide crystal whisker, the dispersion stabilization making mica powder improves, and whisker can improve the caking property of mica powder and silica flour, improve cracking resistance, there is whisker to support after sintering and define uniform pore, promote that gas is discharged, reduce bleb.By lithium chloride colloidal sol, ferrocene boric acid, nano tungsten trioxide, sodium bentonite is modified, ferrocene boric acid, nano tungsten trioxide it is filled with between bentonitic surface and layer gap, make wettability and the adhesiveness of bentonite excellence, improve sag resistance and the elevated temperature strength of coating.
Detailed description of the invention
A kind of anti-sag mica powder modification quartz group lost mould coating, is made up of the raw material of following weight portion (kilogram): silica flour 100, modified starch 0.9, carboxymethyl cellulose 0.9, sodium bentonite 2.4, mica powder 0.9, four acicular type zinc oxide crystal whisker 0.8, Ludox 0.9, ethanol 10, water are appropriate, lithium chloride colloidal sol 0.3, ferrocene boric acid 1.2, nano tungsten trioxide 1.5.
The preparation method of described anti-sag mica powder modification quartz group lost mould coating, comprises the following steps:
(1) Ludox is added in ethanol, stir, add mica powder and stir, be heated to 60 DEG C, add four acicular type zinc oxide crystal whisker while stirring, be heated to 70 DEG C, ultrasonic disperse 3 minutes, continues stirring complete to ethanol volatilization, pulverize, cross 100 mesh sieves, obtain modified micaceous powder；
(2) sodium bentonite is mixed with lithium chloride colloidal sol, ferrocene boric acid, nano tungsten trioxide, grind uniformly, obtain mixed material；
(3) modified starch, carboxymethyl cellulose are added to the water, stir, add described modified micaceous powder and the mixed material of (2nd) step, stir, obtain mixed material；
(4) described mixed material and other leftover materials are mixed into pasty state, to obtain final product.
Being sintered at 1500 DEG C by this embodiment lost foam paint, observed by microscope, internal a small amount of macroscopic void and the most tiny small holes, in a block entirety, fissility has reached I grade, and bending strength is 7.8MPa.
Claims (2)
1. an anti-sag mica powder modification quartz group lost mould coating, it is characterised in that: be prepared by the raw materials in: silica flour 100-102, modified starch 0.9-1.1, carboxymethyl cellulose 0.9-1.1, sodium bentonite 2.4-2.6, mica powder 0.9-1, four acicular type zinc oxide crystal whisker 0.8-0.9, Ludox 0.9-1.1, ethanol 10-13, water are appropriate, lithium chloride colloidal sol 0.3-0.4, ferrocene boric acid 1.2-1.4, nano tungsten trioxide 1.5-1.6.
The preparation method of anti-sag mica powder modification quartz group lost mould coating the most according to claim 1, it is characterised in that comprise the following steps:
(1) Ludox is added in ethanol, stir, add mica powder to stir, be heated to 60-70 DEG C, add four acicular type zinc oxide crystal whisker while stirring, it is heated to 70-75 DEG C, ultrasonic disperse 3-4 minute, continues stirring complete to ethanol volatilization, pulverizes, cross 100-150 mesh sieve, obtain modified micaceous powder；
(2) sodium bentonite is mixed with lithium chloride colloidal sol, ferrocene boric acid, nano tungsten trioxide, grind uniformly, obtain mixed material；
(3) modified starch, carboxymethyl cellulose are added to the water, stir, add described modified micaceous powder and the mixed material of (2nd) step, stir, obtain mixed material；
(4) described mixed material and other leftover materials are mixed into pasty state, to obtain final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610359413.8A CN105817571A (en) | 2016-05-27 | 2016-05-27 | Anti-sagging modified quartz-based mica powder full mold paint and preparation method thereof |
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| CN201610359413.8A CN105817571A (en) | 2016-05-27 | 2016-05-27 | Anti-sagging modified quartz-based mica powder full mold paint and preparation method thereof |
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| CN105817571A true CN105817571A (en) | 2016-08-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112480766A (en) * | 2020-11-28 | 2021-03-12 | 河南省阳光防腐涂装有限公司 | Green environment-friendly energy-saving heat-insulating coating and preparation method thereof |
Citations (5)
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| CN101234881A (en) * | 2008-02-20 | 2008-08-06 | 西安建筑科技大学 | Humidity-conditioning building materials capable of automatically adjusting indoor humidity |
| CN102718806A (en) * | 2011-12-29 | 2012-10-10 | 大连联化医药技术有限公司 | Novel method for synthesizing ferroceneboronic acid ester |
| CN102873261A (en) * | 2012-08-31 | 2013-01-16 | 太仓科博尔精密铸业有限公司 | Lost foam coating and preparation method thereof |
| CN104449085A (en) * | 2014-11-03 | 2015-03-25 | 芜湖市祥荣食品有限公司 | Powder coating with excellent high-temperature resistance effect |
| CN105131665A (en) * | 2015-08-03 | 2015-12-09 | 宜兴市巨人涂料有限公司 | Aqueous inorganic zinc-rich prime coat and preparation method thereof |
-
2016
- 2016-05-27 CN CN201610359413.8A patent/CN105817571A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234881A (en) * | 2008-02-20 | 2008-08-06 | 西安建筑科技大学 | Humidity-conditioning building materials capable of automatically adjusting indoor humidity |
| CN102718806A (en) * | 2011-12-29 | 2012-10-10 | 大连联化医药技术有限公司 | Novel method for synthesizing ferroceneboronic acid ester |
| CN102873261A (en) * | 2012-08-31 | 2013-01-16 | 太仓科博尔精密铸业有限公司 | Lost foam coating and preparation method thereof |
| CN104449085A (en) * | 2014-11-03 | 2015-03-25 | 芜湖市祥荣食品有限公司 | Powder coating with excellent high-temperature resistance effect |
| CN105131665A (en) * | 2015-08-03 | 2015-12-09 | 宜兴市巨人涂料有限公司 | Aqueous inorganic zinc-rich prime coat and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| 康健等: "云母粉对石英基消失模涂料烧结性能的影响", 《特种铸造及有色合金》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112480766A (en) * | 2020-11-28 | 2021-03-12 | 河南省阳光防腐涂装有限公司 | Green environment-friendly energy-saving heat-insulating coating and preparation method thereof |
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