CN104399872A

CN104399872A - Alcohol-based casting paint containing modified coconut shell powder and manufacturing method thereof

Info

Publication number: CN104399872A
Application number: CN201410622812.XA
Authority: CN
Inventors: 黄浩
Original assignee: Wuhu Hongkun Auto Parts Co Ltd
Current assignee: Wuhu Hongkun Auto Parts Co Ltd
Priority date: 2014-11-08
Filing date: 2014-11-08
Publication date: 2015-03-11

Abstract

The invention discloses an alcohol-based casting paint containing modified coconut shell powder. The paint is characterized by being composed of the following raw materials in parts by weight: 65 to 90 parts of chromium corundum, 1 to 2 parts of sodium-based bentonite, 4 to 7 parts of silicone oil, 5 to 8 parts of hollow glass beads, 1.2 to 3.1 parts of hydroxyethyl cellulose, 0.9 to 1.3 parts of imidazoline, 16 to 19 parts of peanut seedling ash, 15 to 18 parts of coconut shell, 1 to 3 parts of calcium sulfate, 2 to 5 parts of boric acid, 3 to 6 parts of rosin, 45 to 60 parts of ethanol, and 3 to 6 parts of auxiliary agent. The prepared casting paint has the advantages of high temperature resistance, good combining performance, excellent suspension property, high coating compactness, good breathability, and strong molten-steel-penetration-resistant performance, and is suitable for massive industrial production.

Description

A kind ofly add alcohol-base foundry coating of modification coconut shell 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 coconut shell 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 coconut shell 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 coconut shell powder, it is characterized in that, be made up of the raw material of following weight portion: pink fused alumina 65-90, sodium bentonite 1-2, silicone oil 4-7, hollow glass micro-ball 5-8, hydroxyethylcellulose 1.2-3.1, imidazoline 0.9-1.3, peanut seedling ashes 16-19, cocoanut shell 15-18, calcium sulfate 1-3, boric acid 2-5, rosin 3-6, ethanol 145-160, auxiliary agent 3-6.

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 coconut shell powder, is characterized in that comprising the following steps:

(1) put into retort calcination processing 3-4 hour at 460-550 DEG C after being dried by cocoanut shell, 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 coconut shell powder of obtained modification;

(2) modification coconut shell powder above-mentioned steps obtained stirs pulping and is heated to 140-160 DEG C together with the ethanol of peanut seedling ashes, 1/4 weight, is cooled to 50-60 DEG C and adds silicone oil, calcium sulfate grinding 30-40 minute;

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

(4) pink fused alumina is pulverized in input reactor, add the ethanol agitation grinding 10-15 minute of imidazoline, hydroxyethylcellulose and surplus, add step (2), (3) product, hollow glass micro-ball, 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: cast paint of the present invention have high temperature resistant, associativity good, suspendability is excellent, coating compactness is higher, good air permeability, resists the advantages such as molten steel penetrating power is strong; Make suspending agent by the coconut shell powder of modification, when being suspended in ethanol, long period placement can not be formed in " silent as the grave shallow lake ", and reduces production cost, is applicable to large-scale industrial production.

Detailed description of the invention

Described a kind of alcohol-base foundry coating adding modification coconut shell powder, it is characterized in that, be made up of the raw material of following weight portion: pink fused alumina 69, sodium bentonite 1, silicone oil 4, hollow glass micro-ball 5, hydroxyethylcellulose 1.2, imidazoline 0.9, peanut seedling ashes 19, cocoanut shell 15, calcium sulfate 1, boric acid 2, rosin 3, ethanol 146, auxiliary agent 6.

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:

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

(1) solid content: suitably;

(2) coating abrasion performance: 0.6;

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

(4) hot permeability of coating: 21 cm ²(kpamin) ^-1;

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

Claims

1. one kind is added the alcohol-base foundry coating of modification coconut shell powder, it is characterized in that, be made up of the raw material of following weight portion: pink fused alumina 65-90, sodium bentonite 1-2, silicone oil 4-7, hollow glass micro-ball 5-8, hydroxyethylcellulose 1.2-3.1, imidazoline 0.9-1.3, peanut seedling ashes 16-19, cocoanut shell 15-18, calcium sulfate 1-3, boric acid 2-5, rosin 3-6, ethanol 145-160, auxiliary agent 3-6, 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 coconut shell powder according to claim 1, is characterized in that comprising the following steps: