CN104209452A - Modified steel slag sand alcohol-based casting coating and preparation method thereof - Google Patents

Abstract

The invention discloses a modified steel slag sand alcohol-based casting coating. The modified steel slag sand alcohol-based casting coating is prepared by using the following raw materials, by weight, 65-80 parts of bauxite, 0.4-0.7 parts of decabromodiphenyl oxide, 5-8 parts of glass powder, 14-19 parts of steel slag sand, 1-2 parts of carboxymethyl cellulose, 2-4 parts of fluorocarbon resin, 0.3-0.6 parts of calcium stearate, 0.6-1.3 parts of chlorinated polyethylene, 0.3-0.5 parts of p-toluene sulfonamide, 15-18 parts of plant ash, 4-8 parts of ethyl silicate, 54-67 parts of ethanol and 4-7 parts of an assistant. The alcohol-based casting coating has the advantages of good wear resistance, high solid content, high strength and the like, and the use of modified steel slag sand substantially reduces the production cost and substantially improves the influences on environment, so the coating is a recoverable economic alcohol-based casting coating, and has wide application prospect.

Description

A kind of modified steel scoria sand alcohol-base foundry coating and preparation method thereof

Technical field

The present invention relates to cast paint field, be specifically related to a kind of modified steel scoria sand alcohol-base foundry coating 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 of modified steel scoria sand alcohol-base foundry coating 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 modified steel scoria sand alcohol-base foundry coating, it is characterized in that, be made up of the raw material of following weight portion: bauxite 65-80, decabromodiphenyl oxide 0.4-0.7, glass dust 5-8, Steel-slag Sand 14-19, carboxymethyl cellulose 1-2, fluorocarbon resin 2-4, calcium stearate 0.3-0.6, haloflex 0.6-1.3, para toluene sulfonamide 0.3-0.5, plant ash 15-18, silester 4-8, ethanol 54-67, auxiliary agent 4-7.

Described auxiliary agent is made up of following raw materials in part by weight: plant ash 15-17, graphite 85-100, ice crystal 20-25, cyclodextrin 1.4-3.6, natural coating agent which has to be dissolved in alcohol before use 2.4-3.8, ethanol 25-30, lithium bentonite 1-2, nanometer silicon carbide 0.7-1.3, brown iron oxide 2.1-3.6, nano-calcium carbonate 3-5, chitin 0.9-2.1, paper pulp 12-17, suitable quantity of water, its preparation method is by graphite, ice crystal is put into calcining furnace and calcine 2-3 hour at 550-680 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, add water stirring pulping, simultaneously, add brown iron oxide, nano-calcium carbonate grinds, spraying dry obtains xeraphium, cyclodextrin, natural coating agent which has to be dissolved in alcohol before use are joined in ethanol and heat stirring and dissolving, adds plant ash, lithium bentonite, nanometer silicon carbide high-speed stirred 10-20 minute, until fineness reaches the lithium bentonite that less than 50 μm obtain modification, xeraphium, modification lithium bentonite, chitin, paper pulp are added suitable quantity of water grinding granulation, dries and get final product.

The preparation method of described a kind of modified steel scoria sand alcohol-base foundry coating, is characterized in that comprising the following steps:

(1) Steel-slag Sand is put into retort calcination processing 3-4 hour at 450-550 DEG C, 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, the Steel-slag Sand powder of obtained modification;

(2) modified steel scoria sand powder above-mentioned steps obtained stirs pulping and is heated to 140-160 DEG C together with the ethanol of plant ash, 1/4 weight, add fluorocarbon resin, decabromodiphenyl oxide maintenance temperature stirs 1-2 hour, be cooled to 50-60 DEG C and add calcium stearate grinding 30-40 minute, spraying dry obtains xeraphium;

(3) ethanol of carboxymethyl cellulose and 1/5 weight is stirred, leave standstill 10-12 hour, then add haloflex, silester be heated to 70-80 DEG C stir 30-40 minute;

(4) bauxite is dropped in reactor, add the ethanol agitation grinding 10-15 minute of glass dust and surplus, add step (2), (3) product, para toluene sulfonamide, 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 alcohol-base foundry coating that the present invention obtains, wearability is good, solid content is high, intensity advantages of higher, the Steel-slag Sand of modification is used to greatly reduce production cost, the impact of environment is also improved greatly, be a kind of economical alcohol-base foundry coating that can be recycled, have a extensive future.

Detailed description of the invention

Described a kind of modified steel scoria sand alcohol-base foundry coating, it is characterized in that, be made up of the raw material of following weight portion: bauxite 68, decabromodiphenyl oxide 0.4, glass dust 5, Steel-slag Sand 14, carboxymethyl cellulose 1, fluorocarbon resin 2, calcium stearate 0.3, haloflex 1.3, para toluene sulfonamide 0.5, plant ash 15, silester 4, ethanol 67, auxiliary agent 4.

Described auxiliary agent is made up of following raw materials in part by weight: plant ash 16, graphite 87, ice crystal 23, cyclodextrin 1.4, natural coating agent which has to be dissolved in alcohol before use 2.4, ethanol 25, lithium bentonite 1, nanometer silicon carbide 0.7, brown iron oxide 2.6, nano-calcium carbonate 3, chitin 0.9, paper pulp 12, suitable quantity of water, its preparation method is by graphite, ice crystal is put into calcining furnace and calcine 2-3 hour at 550-680 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, add water stirring pulping, simultaneously, add brown iron oxide, nano-calcium carbonate grinds, spraying dry obtains xeraphium, cyclodextrin, natural coating agent which has to be dissolved in alcohol before use are joined in ethanol and heat stirring and dissolving, adds plant ash, lithium bentonite, nanometer silicon carbide high-speed stirred 10-20 minute, until fineness reaches the lithium bentonite that less than 50 μm obtain modification, xeraphium, modification lithium bentonite, chitin, paper pulp are added suitable quantity of water grinding granulation, dries and get final product.

Preparation method comprises the following steps:

(1) Steel-slag Sand is put into retort calcination processing 3-4 hour at 450-550 DEG C, 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, the Steel-slag Sand powder of obtained modification;

(2) modified steel scoria sand powder above-mentioned steps obtained stirs pulping and is heated to 140-160 DEG C together with the ethanol of plant ash, 1/4 weight, add fluorocarbon resin, decabromodiphenyl oxide maintenance temperature stirs 1-2 hour, be cooled to 50-60 DEG C and add calcium stearate grinding 30-40 minute, spraying dry obtains xeraphium;

(3) ethanol of carboxymethyl cellulose and 1/5 weight is stirred, leave standstill 10-12 hour, then add haloflex, silester be heated to 70-80 DEG C stir 30-40 minute;

(4) bauxite is dropped in reactor, add the ethanol agitation grinding 10-15 minute of glass dust and surplus, add step (2), (3) product, para toluene sulfonamide, 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) coating abrasion performance: 0.43;

(2) intensity of paint coatings after 1200 DEG C of roastings: 650g/mm;

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

Claims (2)

1. a modified steel scoria sand alcohol-base foundry coating, it is characterized in that, be made up of the raw material of following weight portion: bauxite 65-80, decabromodiphenyl oxide 0.4-0.7, glass dust 5-8, Steel-slag Sand 14-19, carboxymethyl cellulose 1-2, fluorocarbon resin 2-4, calcium stearate 0.3-0.6, haloflex 0.6-1.3, para toluene sulfonamide 0.3-0.5, plant ash 15-18, silester 4-8, ethanol 54-67, auxiliary agent 4-7, described auxiliary agent is made up of following raw materials in part by weight: plant ash 15-17, graphite 85-100, ice crystal 20-25, cyclodextrin 1.4-3.6, natural coating agent which has to be dissolved in alcohol before use 2.4-3.8, ethanol 25-30, lithium bentonite 1-2, nanometer silicon carbide 0.7-1.3, brown iron oxide 2.1-3.6, nano-calcium carbonate 3-5, chitin 0.9-2.1, paper pulp 12-17, suitable quantity of water, its preparation method is by graphite, ice crystal is put into calcining furnace and calcine 2-3 hour at 550-680 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, add water stirring pulping, simultaneously, add brown iron oxide, nano-calcium carbonate grinds, spraying dry obtains xeraphium, cyclodextrin, natural coating agent which has to be dissolved in alcohol before use are joined in ethanol and heat stirring and dissolving, adds plant ash, lithium bentonite, nanometer silicon carbide high-speed stirred 10-20 minute, until fineness reaches the lithium bentonite that less than 50 μm obtain modification, xeraphium, modification lithium bentonite, chitin, paper pulp are added suitable quantity of water grinding granulation, dries and get final product.

2. the preparation method of a kind of modified steel scoria sand alcohol-base foundry coating according to claim 1, is characterized in that comprising the following steps:

(1) Steel-slag Sand is put into retort calcination processing 3-4 hour at 450-550 DEG C, 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, the Steel-slag Sand powder of obtained modification;

(2) modified steel scoria sand powder above-mentioned steps obtained stirs pulping and is heated to 140-160 DEG C together with the ethanol of plant ash, 1/4 weight, add fluorocarbon resin, decabromodiphenyl oxide maintenance temperature stirs 1-2 hour, be cooled to 50-60 DEG C and add calcium stearate grinding 30-40 minute, spraying dry obtains xeraphium;

(3) ethanol of carboxymethyl cellulose and 1/5 weight is stirred, leave standstill 10-12 hour, then add haloflex, silester be heated to 70-80 DEG C stir 30-40 minute;

(4) bauxite is dropped in reactor, add the ethanol agitation grinding 10-15 minute of glass dust and surplus, add step (2), (3) product, para toluene sulfonamide, 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.