CN104399873A - Alcohol-based casting paint containing modified erianthus arundinaceus root powder and manufacturing method thereof - Google Patents

Abstract

The invention discloses an alcohol-based casting paint containing modified erianthus arundinaceus root powder. The paint is characterized by being composed of the following raw materials in parts by weight: 74 to 86 parts of zircon powder, 0.5 to 0.9 part of 1,4-dioxane, 0.7 to 2.1 parts of 1,3,5-triglyeidyl-S-triazinetrione, 3 to 5 parts of organic silicon, 1 to 2 parts of trimethoxy silane, 8 to 12 parts of diatomite, 1.3 to 2.6 parts of dodecyl trimethyl ammonium bromide, 3.1 to 4.2 parts of lithium-based bentonite, 17 to 21 parts of erianthus arundinaceus root, 1 to 2 parts of rosin, 54 to 65 parts of ethanol, and 2 to 6 parts of auxiliary agent. The modified erianthus arundinaceus root is taken as the suspending agent. When the erianthus arundinaceus root is suspended in ethanol, dead precipitation will not be formed even after long term storage. Moreover, modified rosin is taken as the adhesive, suspending property of the paint is greatly improved, and the sand will not be adhered on the casting. An antifoaming agent is added to eliminate the bubbles generated during the stirring process so as to improve the wettability of the alcohol-based paint. Furthermore, the thixotropy and painting effect of the alcohol-based paint are largely improved. The coating is smooth and compact, the adhesive strength is high, and the hardening phenomenon is avoided.

Description

A kind ofly add alcohol-base foundry coating of modification spot lalang grass rhizome powder and preparation method thereof

Technical field

The present invention relates to cast paint field, be specifically related to a kind ofly add alcohol-base foundry coating of modification spot lalang grass rhizome powder and preparation method thereof.

Background technology

Cast paint refers to for being coated in die cavity or core surface, to change the casting auxiliary material of the performances such as its surperficial refractoriness, chemical stability, anti-metal erosion, anti-stick grittiness, the disperse system that it is made up of the material of multiple different in kind, its composition mainly comprises the compositions such as refractory material, suspending agent, carrier, binding agent and special additive.Require that coating has good processing performance, service behaviour, quality stability and applies reappearance when acting on foundry goods, can play heat insulation on the one hand, equalization temperature, exempt the object of the impingment corrosion of molten metal, the defect such as cracking, sand holes, white iron formation that can prevent cast product from causing because Local cooling is too fast on the other hand.Cast paint is of a great variety, substantially can be divided into two classes: water based paint and alcohol-base paint.Wherein alcohol-base paint is both curable through lighting after application, does not need to dry, and can shorten the production cycle, Simplified flowsheet, reduces drying plant investment, is be cast a kind of quick drying paint that boundary widely uses, has been widely used in the production of steel, iron, coloured foundry goods.

But alcohol-base foundry coating has many defects in prior art, such as: suspension stability is poor, in long-distance transport and deposit easy layering in process, resistance to elevated temperatures is poor, hardness is low, low, the anti-stick grittiness of poor chemical stability, anti-metal performance of flushing is weak, make alcohol-base foundry coating function singleness, cannot large-scale industrial production be met.

Summary of the invention

Object of the present invention is just to provide a kind ofly adds alcohol-base foundry coating of modification spot lalang grass rhizome powder and preparation method thereof, to overcome the deficiencies in the prior art.

The object of the present invention is achieved like this:

A kind of alcohol-base foundry coating adding modification spot lalang grass rhizome powder, it is characterized in that, be made up of the raw material of following weight portion: zirconium English powder 74-86,1,4-dioxane 0.5-0.9,1,3,5-three-glycidyl-S-triazinetrione 0.7-2.1, organosilicon 3-5, trimethoxy silane 1-2, diatomite 8-12, DTAB 1.3-2.6, lithium bentonite 3.1-4.2, spot lalang grass rhizome 17-21, rosin 1-2, ethanol 154-165, auxiliary agent 2-6.

Described auxiliary agent is made up of following raw materials in part by weight: shrimp shell 8-13, pearl mica 75-85, hydrotalcite 55-70, sodium phosphate trimer 0.1-0.4, organobentonite 1-2, thymol 0.2-0.4, dimethicone 2-4, 1-Methoxy-2-propyl acetate 0.3-0.6, nano silicon 0.8-2.1, brown iron oxide 3-6, polyethylene glycol oxide 2.3-3.1, brown sugar 1.2-3.5, suitable quantity of water, its preparation method is: by shrimp shell, pearl mica, hydrotalcite is put into calcining furnace and calcine 2-3 hour at 540-670 DEG C, take out, the hydrochloric acid solution putting into 8-12% soaks 4-5 hour, filter and take out, use clear water cyclic washing, dry and pulverize, be added to the water, simultaneously, add polyethylene glycol oxide, brown iron oxide grinds, spraying dry obtains xeraphium, organobentonite, sodium phosphate trimer are joined 1-Methoxy-2-propyl acetate high speed and stir 10-20 minute, adds dimethicone, nano silicon high-speed stirred 20-30 minute successively, until fineness reaches the organobentonite that less than 50 μm obtain modification, xeraphium, organic modified bentonite, thymol, brown sugar are added suitable quantity of water grinding granulation, dries and get final product.

Described a kind of preparation method adding the alcohol-base foundry coating of modification spot lalang grass rhizome powder, is characterized in that comprising the following steps:

(1) put into retort calcination processing 3-4 hour at 451-555 DEG C after being dried by spot lalang grass rhizome, take out, the hydrochloric acid solution putting into 10-12% soaks 3-6 hour, filters and takes out, use clear water cyclic washing, dries and pulverizes;

(2) product above-mentioned steps obtained stirs pulping and is heated to 135-160 DEG C together with the ethanol of diatomite, 1/4 weight, add trimethoxy silane, 1,3,5-three-glycidyl-S-triazinetrione keeps temperature to stir 1-2 hour, be cooled to 50-60 DEG C and add 1,4-dioxane grinding 30-40 minute, spraying dry obtains xeraphium;

(3) ethanol of lithium bentonite and 1/5 weight is stirred, leave standstill 10-12 hour, then add DTAB, rosin heating stirs 30-40 minute to 70-80 DEG C;

(4) zirconium English powder is dropped in reactor, add the ethanol agitation grinding 10-15 minute of organosilicon, surplus, add step (2), (3) product, auxiliary agent again, temperature of reaction kettle is slowly risen to 75-85 DEG C simultaneously, keep temperature to stir 20-40 minute, grinding is until fineness reaches less than 50 μm.

The present invention has following beneficial effect: the spot lalang grass rhizome of cast paint modification of the present invention makees suspending agent, and when being suspended in ethanol, long period placement can not be formed in " silent as the grave shallow lake "; Use the rosin of modification as binding agent, substantially increase the suspension of coating, avoid foundry goods scab; Add defoamer, eliminate in whipping process the bubble produced, to improve the wetability of alcohol-base paint, greatly can improve the thixotropy of alcohol-base paint and be coated with brushing effects, the smooth densification of coating, adhesion strength is high and do not harden.

Detailed description of the invention

Described a kind of alcohol-base foundry coating adding modification spot lalang grass rhizome powder, it is characterized in that, be made up of the raw material of following weight portion: zirconium English powder 74,1,4-dioxane 0.59,1,3,5-three-glycidyl-S-triazinetrione 0.7, organosilicon 5, trimethoxy silane 1, diatomite 8, DTAB 1.5, lithium bentonite 3.1, spot lalang grass rhizome 18, rosin 1, ethanol 155, auxiliary agent 2.

Described auxiliary agent is made up of following raw materials in part by weight: shrimp shell 11, pearl mica 78, hydrotalcite 57, sodium phosphate trimer 0.14, organobentonite 1, thymol 0.2, dimethicone 2, 1-Methoxy-2-propyl acetate 0.3, nano silicon 1.1, brown iron oxide 3, polyethylene glycol oxide 2.3, brown sugar 1.5, suitable quantity of water, its preparation method is: by shrimp shell, pearl mica, hydrotalcite is put into calcining furnace and calcine 2-3 hour at 540-670 DEG C, take out, the hydrochloric acid solution putting into 8-12% soaks 4-5 hour, filter and take out, use clear water cyclic washing, dry and pulverize, be added to the water, simultaneously, add polyethylene glycol oxide, brown iron oxide grinds, spraying dry obtains xeraphium, organobentonite, sodium phosphate trimer are joined 1-Methoxy-2-propyl acetate high speed and stir 10-20 minute, adds dimethicone, nano silicon high-speed stirred 20-30 minute successively, until fineness reaches the organobentonite that less than 50 μm obtain modification, xeraphium, organic modified bentonite, thymol, brown sugar are added suitable quantity of water grinding granulation, dries and get final product.

Preparation method comprises the following steps:

(1) put into retort calcination processing 3-4 hour at 451-555 DEG C after being dried by spot lalang grass rhizome, take out, the hydrochloric acid solution putting into 10-12% soaks 3-6 hour, filters and takes out, use clear water cyclic washing, dries and pulverizes;

(2) product above-mentioned steps obtained stirs pulping and is heated to 135-160 DEG C together with the ethanol of diatomite, 1/4 weight, add trimethoxy silane, 1,3,5-three-glycidyl-S-triazinetrione keeps temperature to stir 1-2 hour, be cooled to 50-60 DEG C and add 1,4-dioxane grinding 30-40 minute, spraying dry obtains xeraphium;

(3) ethanol of lithium bentonite and 1/5 weight is stirred, leave standstill 10-12 hour, then add DTAB, rosin heating stirs 30-40 minute to 70-80 DEG C;

(4) zirconium English powder is dropped in reactor, add the ethanol agitation grinding 10-15 minute of organosilicon, surplus, add step (2), (3) product, auxiliary agent again, temperature of reaction kettle is slowly risen to 75-85 DEG C simultaneously, keep temperature to stir 20-40 minute, grinding is until fineness reaches less than 50 μm.

The technical indicator of being processed the cast paint obtained by above-described embodiment is as follows:

(1) solid content: 28-35%;

(2) gas forming amount: 13 mL/g;

(3) 24 hours coating suspension rates are placed: 98.7%;

(4) intensity of paint coatings after 1200 DEG C of roastings: 540g/mm;

(5) apply, dry, appearance of coat after cooling: flawless, without bubbling and the uniform coating of macroscopic pin hole.

Claims (2)

1. one kind is added the alcohol-base foundry coating of modification spot lalang grass rhizome powder, it is characterized in that, be made up of the raw material of following weight portion: zirconium English powder 74-86,1,4-dioxane 0.5-0.9,1,3,5-three-glycidyl-S-triazinetrione 0.7-2.1, organosilicon 3-5, trimethoxy silane 1-2, diatomite 8-12, DTAB 1.3-2.6, lithium bentonite 3.1-4.2, spot lalang grass rhizome 17-21, rosin 1-2, ethanol 154-165, auxiliary agent 2-6, described auxiliary agent is made up of following raw materials in part by weight: shrimp shell 8-13, pearl mica 75-85, hydrotalcite 55-70, sodium phosphate trimer 0.1-0.4, organobentonite 1-2, thymol 0.2-0.4, dimethicone 2-4, 1-Methoxy-2-propyl acetate 0.3-0.6, nano silicon 0.8-2.1, brown iron oxide 3-6, polyethylene glycol oxide 2.3-3.1, brown sugar 1.2-3.5, suitable quantity of water, its preparation method is: by shrimp shell, pearl mica, hydrotalcite is put into calcining furnace and calcine 2-3 hour at 540-670 DEG C, take out, the hydrochloric acid solution putting into 8-12% soaks 4-5 hour, filter and take out, use clear water cyclic washing, dry and pulverize, be added to the water, simultaneously, add polyethylene glycol oxide, brown iron oxide grinds, spraying dry obtains xeraphium, organobentonite, sodium phosphate trimer are joined 1-Methoxy-2-propyl acetate high speed and stir 10-20 minute, adds dimethicone, nano silicon high-speed stirred 20-30 minute successively, until fineness reaches the organobentonite that less than 50 μm obtain modification, xeraphium, organic modified bentonite, thymol, brown sugar are added suitable quantity of water grinding granulation, dries and get final product.

2. a kind of preparation method of adding the alcohol-base foundry coating of modification spot lalang grass rhizome powder according to claim 1, is characterized in that comprising the following steps:

(1) put into retort calcination processing 3-4 hour at 451-555 DEG C after being dried by spot lalang grass rhizome, take out, the hydrochloric acid solution putting into 10-12% soaks 3-6 hour, filters and takes out, use clear water cyclic washing, dries and pulverizes;

(2) product above-mentioned steps obtained stirs pulping and is heated to 135-160 DEG C together with the ethanol of diatomite, 1/4 weight, add trimethoxy silane, 1,3,5-three-glycidyl-S-triazinetrione keeps temperature to stir 1-2 hour, be cooled to 50-60 DEG C and add 1,4-dioxane grinding 30-40 minute, spraying dry obtains xeraphium;

(3) ethanol of lithium bentonite and 1/5 weight is stirred, leave standstill 10-12 hour, then add DTAB, rosin heating stirs 30-40 minute to 70-80 DEG C;

(4) zirconium English powder is dropped in reactor, add the ethanol agitation grinding 10-15 minute of organosilicon, surplus, add step (2), (3) product, auxiliary agent again, temperature of reaction kettle is slowly risen to 75-85 DEG C simultaneously, keep temperature to stir 20-40 minute, grinding is until fineness reaches less than 50 μm.