CN102993868A - Preparation method of aqueous silvery hub paint - Google Patents

Abstract

The invention discloses a preparation method of an aqueous silvery hub paint, comprising preparation of slurry: adding 140-145kg of de-ionized water into a reaction kettle; starting a high-speed dispersing machine, and controlling the rotating speed at 300-400r/min; adding 10-12kg of dispersing agent (BYK192), 6-10kg of surfactant (Surfynol 104E), 1-2kg of antifoaming agent, 1-2kg of matting agent, 40-50kg of anti-rust pigment, 15-20kg of sericite mica powder, 8-10kg of silica powder and 35-40kg of aqueous paint anti-settling agent (HT200); regulating the rotating speed to 800-1000rpm; dispersing for 30-40min at high speed; adding the mixture into a grinding machine, and grinding until the fineness is 2-5 microns; filtering and taking out the paint. The silvery hub paint disclosed by the invention, which adopts aqueous materials, is free from pollution, excellent in both acid mist resistance and aging resistance, comparatively good in stain resistance, and easy to clean.

Description

A kind of preparation method of water-based silver color wheel hub paint

Technical field

The invention belongs to a kind of paint, specifically a kind of preparation method of water-based silver color wheel hub paint

Background technology

The automotive hub industry is very strict to the specification of quality of coating.Automobile (motorcycle) wheel hub that will the production high-quality, the coating three of the aluminium of high-quality, dustless application, excellent combination property is indispensable.The coating that automotive hub is used according to the difference of Application Areas, requires also to be not quite similar except requiring good surface quality and application property.The coating of using such as external high-grade car has except requiring to film the excellent mechanical property, and also requiring to film to have excellent salt fog resistance and resistance to detergents etc.

Simultaneously along with the raising of the world to environmental consciousness, to automobile industry coating, not only the performance of coating own there is very high requirement, also whether environmental protection has also proposed Secretary to being coated with, and the invention belongs to Environmental Protective Water-paint, environmentally safe in construction, have no irritating odor, without injury, without potential safety hazard, do not fire not quick-fried to workmen's health.

Existing wheel hub paint exists environmental pollution and salt fog resistance and resistance to detergents to have much room for improvement.

Summary of the invention

The preparation method who the purpose of this invention is to provide a kind of water-based silver color wheel hub paint, the present invention is by unique proportioning, and the silver paint glossiness of preparation is higher, and acidic fog resistance and ageing-resistant performance are all good, pollution resistance is better, and easy cleaning is worth wheel hub manufacturing enterprise to widely popularize.

Technical scheme of the present invention is as follows:

A kind of preparation method of water-based silver color wheel hub paint is characterized in that may further comprise the steps:

1) preparation slurry: with deionized water 140-145 kilogram, knock down in the reactor, start high speed dispersor, the control rotating speed adds dispersion agent (BYK192) 10-12 kilogram at 300-400r/min; Tensio-active agent (Surfynol 104E) 6-10 kilogram; Defoamer 1-2 kilogram; Flatting silica 1-2 kilogram; Rust-stabilising pigment 40-50 kilogram; Wet method sericite in powder 15-20 kilogram; Silicon powder 8-10 kilogram; Water-miscible paint anti-settling agent (HT200) 35-40 kilogram; Rotating speed is transferred to 800-1000 rev/min, and high speed dispersion 30-40min puts into shredder, and grinding rate to 25 μ m filters and takes out;

2) paint: get slurry to reactor, turn fast 700-800r/min, add water-borne acrylic resin 400-450 kilogram; Alcohol ester 12 35-40 kilograms; Align auxiliary agent 40-45 kilogram; Thickening material (PU40) 3.5-5 kilogram; Base material wetting agent (enlightening is high by 245) 2-3 kilogram; Ethylene glycol monobutyl ether 40-45 kilogram; Aluminium-silver slurry 120-130 kilogram; Transfer pH value 8-9, disperseed 40-50 minute minute and get final product.

Silver color wheel hub paint of the present invention adopts water-based material, and is pollution-free, and acidic fog resistance and ageing-resistant performance are all good, and pollution resistance is better, easy cleaning.

Embodiment

Embodiment 1

A kind of preparation method of water-based silver color wheel hub paint may further comprise the steps:

1, preparation slurry: with 142 kilograms of deionized waters, knock down in the reactor, start high speed dispersor, the control rotating speed adds dispersion agent (BYK192) 10 kilograms at 400r/min; 10 kilograms in tensio-active agent (Surfynol 104E); 1 kilogram of defoamer; 2 kilograms of flatting silicas; 50 kilograms of rust-stabilising pigments; 20 kilograms of wet method sericites in powder; 10 kilograms of silicon powders; 40 kilograms of water-miscible paint anti-settling agents (HT200); Rotating speed is transferred to 1000 rev/mins, and high speed dispersion 40min puts into shredder, and grinding rate to 25 μ m filters and takes out.

2, size mixing: get slurry to reactor, turn fast 800r/min, add 450 kilograms of water-borne acrylic resins; 12 kilograms of alcohol esters; Align 40 kilograms of auxiliary agents; 3.5 kilograms of thickening materials (PU40); 2 kilograms of base material wetting agents (enlightening is high by 245); 40 kilograms of ethylene glycol monobutyl ethers; 130 kilograms of aluminium-silver slurrys; Transfer pH value 8-9, disperseed 40 minutes and get final product.

3, weigh, filter, pack.

Performance index parameter such as the following table of the present invention's lacquer:

Technological project	Technical indicator	Detection method	Remarks
				1, outward appearance	Silver gray	Range estimation
2, the viscosity (S) of dispatching from the factory	≥120	GB/T1723-93
				3, fineness (um)	≤35um	GB1724-89
4, solid content (%)	≥55	GB1725-89
				5, theoretical spreading rate (㎡/kg)	10-12㎡/kg	The laboratory
6, opacifying power g/ ㎡	≤70	GB1726-89
				7, sticking power (drawing the circle method)	≤0	GB1720-89
8, time of drying	140℃20min	GB6753.2-86
				9, build (um)	≥20	GB1764-89
10, dry film gloss	85	60 degree
				11, pendulum-rocker hardness	≥0.36	GB/T1730-93
12, shock-resistance (kg/cm)	50	GB/T1732-93
				13, snappiness (mm)	1	GB6742-86
14, alkali resistance (h)	200	GB9265-88	Be dipped in the NaOH2% solution
				15, acid resistance (h)	200	GB9266-88	Be dipped in the H2SO42% solution
16, salt spray resistance (h)	300	GB/T1771-91
				17, water tolerance (h)	300	GB/T1733-93
18, VOC quantity discharged	≤40	HBC12-2002	GB is below 200

Embodiment 2

A kind of preparation method of water-based silver color wheel hub paint may further comprise the steps:

1, preparation slurry: with 142 kilograms of deionized waters, knock down in the reactor, start high speed dispersor, the control rotating speed adds dispersion agent (BYK192) 10 kilograms at 400r/min; 10 kilograms in tensio-active agent (Surfynol 104E); 1 kilogram of defoamer; 2 kilograms of flatting silicas; 50 kilograms of rust-stabilising pigments; 20 kilograms of wet method sericites in powder; 10 kilograms of silicon powders; 40 kilograms of water-miscible paint anti-settling agents (HT200); 50 kilograms of rust-preventive agent transfer to 1000 rev/mins with rotating speed, and high speed dispersion 40min puts into shredder, and grinding rate to 25 μ m filters and takes out.

2, size mixing: get slurry to reactor, turn fast 800r/min, add 450 kilograms of water-borne acrylic resins; 12 kilograms of alcohol esters; Align 40 kilograms of auxiliary agents; 3.5 kilograms of thickening materials (PU40); 2 kilograms of base material wetting agents (enlightening is high by 245); 40 kilograms of ethylene glycol monobutyl ethers; 130 kilograms of aluminium-silver slurrys; Transfer pH value 8-9, disperseed 40 minutes and get final product.

3, weigh, filter, pack.

Rust-preventive agent is that the component by following weight (kilogram) is prepared from: water 10, modification trees ashes 2, zinc powder 1, gelatin 2, polyvinyl alcohol 2, N methyldiethanol amine 2, SODIUM PHOSPHATE, MONOBASIC 1, formula material is mixed, 80-85 ℃ of lower the stirring 2 hours, after the cooling, filter impurity elimination through grinding, get final product;

Modified Nano trees ashes prepare by the following method:

(1), the trees ashes add (1.0～1.2) g/L potassium permanganate solution and soaked 2-3 hour, pull out, the hydrochloric acid soln of putting into again 12-15% soaked, at 70-80 ℃ of lower stirring reaction 3-4 hour; Pull out, be washed to neutrality, oven dry;

(2), in the trees ashes, add sodium laurylsulfate, 1% Di(dioctylpyrophosphato) ethylene titanate, 3% vinyl three ('beta '-methoxy oxyethyl group) silane, 25% aluminium hydrate powder that is equivalent to its weight 4%, high speed dispersion 4200-4500 rev/min, 20-30 minute;

(3) oven dry is pulverized, and makes ultrafine powder;

The present embodiment has further improved its salt spray resistance and rustless property by having increased rust-preventive agent.

Claims (1)

1. the preparation method of a water-based silver color wheel hub paint is characterized in that may further comprise the steps:

1) preparation slurry: with deionized water 140-145 kilogram, knock down in the reactor, start high speed dispersor, the control rotating speed adds dispersion agent (BYK192) 10-12 kilogram at 300-400r/min; Tensio-active agent (Surfynol 104E) 6-10 kilogram; Defoamer 1-2 kilogram; Flatting silica 1-2 kilogram; Rust-stabilising pigment 40-50 kilogram; Wet method sericite in powder 15-20 kilogram; Silicon powder 8-10 kilogram; Water-miscible paint anti-settling agent (HT200) 35-40 kilogram; Rotating speed is transferred to 800-1000 rev/min, and high speed dispersion 30-40min puts into shredder, and grinding rate to 25 μ m filters and takes out;

2) paint: get slurry to reactor, turn fast 700-800r/min, add water-borne acrylic resin 400-450 kilogram; Alcohol ester 12 35-40 kilograms; Align auxiliary agent 40-45 kilogram; Thickening material (PU40) 3.5-5 kilogram; Base material wetting agent (enlightening is high by 245) 2-3 kilogram; Ethylene glycol monobutyl ether 40-45 kilogram; Aluminium-silver slurry 120-130 kilogram; Transfer pH value 8-9, disperseed 40-50 minute minute and get final product.