CN103289520A - Powder coating loaded with zirconia and preparation method thereof - Google Patents

Abstract

The invention discloses a powder coating loaded with zirconia and a preparation method thereof. Raw materials for the powder coating comprise a resorcinol bis-glycidyl ether type epoxy resin, a terpene resin T-80, zirconia, aluminum nitride powder, urotropine, bronze powder, nanometer talcum powder, an organosilicon leveling agent, hydrophobic silica, an anti-oxidant DSTP, n-butyl methacrylate, nanometer calcium carbonate and a film-forming resin. The powder coating provided in the invention is a green environment-friendly coating which is nontoxic, high-temperature-resistant and free of a solvent and discharge of VOC; the resorcinol bis-glycidyl ether type epoxy resin is used as a main raw material for the coating and the film forming resin and zirconia are added at the same time, so film forming ability of the powder coating is enhanced, surface leveling of the powder coating is improved, high gloss retention is realized, and decorative performance the powder coating is improved; a prepared finished product has a high qualified rate, and industrial large production can be realized.

Description

Powder coating of a kind of loaded zirconia and preparation method thereof

Technical field

The present invention relates to art of powder coatings, relate in particular to powder coating of a kind of loaded zirconia and preparation method thereof.

Background technology

Along with the sustained, stable growth of China's economy and improving constantly of living standards of the people, the powder coating business of hardware also constantly increases, especially industries such as household electrical appliance, instrument, traffic facilities, aluminium section bar, various vehicle and haberdashery and hardware, powder coating can provide good corrosionproof protection and decorate properties to metal, but owing to the antifouling property of the existing coating that is used for above-mentioned field is undesirable, often adhere to all kinds of dusts, dirt or even greasy dirt on the coating; Anti-stick subsides ability is also undesirable, and the coating that forms of existing powder coating phenomenon such as be prone to foaming under the effect of natural conditions, ftracture, peel off such as be exposed to the sun for a long time out of doors, drench with rain, and therefore, the mechanical property of coating is also undesirable.

Summary of the invention

Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, and powder coating of a kind of loaded zirconia and preparation method thereof is provided.

The present invention adopts following technical scheme to achieve these goals:

The powder coating of loaded zirconia, the weight part of its constitutive material is: Resorcinol bisglycidyl ether type Resins, epoxy 41-43, terpine resin T-807.5-9.5, zirconium white 4-6, aluminium nitride powder 1.5-1.7, urotropine 0.7-1.0, copper bronze 1.8-2.2, nanomete talc powder 33-35, organosilicon flow agent 1.3-1.5, water drain silica 1-2, oxidation inhibitor DSTP 1.6-1.8, n-BMA 2-4, nano-calcium carbonate 4-6 and film-forming resin 1.8-2.2.

The powder coating of loaded zirconia, the weight part of its constitutive material is: Resorcinol bisglycidyl ether type Resins, epoxy 42, terpine resin T-808.5, zirconium white 5, aluminium nitride powder 1.6, urotropine 0.9, copper bronze 2.0, nanomete talc powder 34, organosilicon flow agent 1.4, water drain silica 1.5, oxidation inhibitor DSTP 1.7, n-BMA 3, nano-calcium carbonate 5 and film-forming resin 2.0.

The preparation method of the powder coating of loaded zirconia may further comprise the steps:

(1) preparation of film-forming resin: press compositing formula urea 3-5, clorafin 5-7, poly terephthalic acid diethyl ester 3-5, polyoxyethylene glycol 4-6, silver powder 0.2-0.3, rosin 0.3-0.5, hexanodioic acid propylene glycol polyester 3-5, aluminium nitride powder 2-3,2,4-dichlorobenzoperoxide 0.2-0.3 and zinc oxide 0.3-0.5; Production method is as follows:

A: clorafin, poly terephthalic acid diethyl ester, polyoxyethylene glycol, rosin, hexanodioic acid propylene glycol polyester, aluminium nitride powder are added stainless steel cauldron, be warming up to 110 ± 5 ℃, start and stir adding urea, 2,4-dichlorobenzoperoxide, zinc oxide, silver powder;

B: be warmed up to 180-195 ℃ with 50-60 ℃ of/hour speed then; React to stop in 1-2 hour heating and obtain;

(2) weight part by constitutive material takes by weighing each raw material, prepares burden then and puts into mixing machine and mix, and the compound that mixes is put into twin screw extruder extrude, and a district temperature of forcing machine is controlled and existed: 75 ± 8 ℃; Two district's temperature controls exist: 95 ± 5 ℃; After the sheet material cooling after extruding, put into crusher for crushing, grind to form 200-220 purpose powder, the packing warehouse-in, the powder curing condition is: solidification value 150-180 ℃, be incubated 18-22 minute.

Advantage of the present invention:

Powder coating of the present invention is environmental type coating, nontoxic, high temperature resistant, do not contain solvent, the VOC free discharging, and the present invention to adopt Resorcinol bisglycidyl ether type Resins, epoxy be main raw material, add film-forming resin and zirconium white simultaneously, strengthened the film-forming properties of powder coating, improved the surperficial levelling of powder coating, have high gloss retention, improved the ornamental of powder coating; The product qualified rate height for preparing can be realized industrialized production.

Embodiment

Embodiment 1: the powder coating of loaded zirconia, the weight part of its constitutive material (kg) is: Resorcinol bisglycidyl ether type Resins, epoxy 42, terpine resin T-808.5, zirconium white 5, aluminium nitride powder 1.6, urotropine 0.9, copper bronze 2.0, nanomete talc powder 34, organosilicon flow agent 1.4, water drain silica 1.5, oxidation inhibitor DSTP 1.7, n-BMA 3, nano-calcium carbonate 5 and film-forming resin 2.0.

The preparation method of the powder coating of loaded zirconia may further comprise the steps:

(1) preparation of film-forming resin: press compositing formula (kg) urea 4, clorafin 6, poly terephthalic acid diethyl ester 4, polyoxyethylene glycol 5, silver powder 0.25, rosin 0.4, hexanodioic acid propylene glycol polyester 4, aluminium nitride powder 2.5,2,4-dichlorobenzoperoxide 0.25 and zinc oxide 0.4; Production method is as follows:

A: clorafin, poly terephthalic acid diethyl ester, polyoxyethylene glycol, rosin, hexanodioic acid propylene glycol polyester, aluminium nitride powder are added stainless steel cauldron, be warming up to 110 ± 5 ℃, start and stir adding urea, 2,4-dichlorobenzoperoxide, zinc oxide, silver powder;

B: be warmed up to 180-195 ℃ with 50-60 ℃ of/hour speed then; React to stop in 1-2 hour heating and obtain;

(2) weight part by constitutive material takes by weighing each raw material, prepares burden then and puts into mixing machine and mix, and the compound that mixes is put into twin screw extruder extrude, and a district temperature of forcing machine is controlled and existed: 75 ± 8 ℃; Two district's temperature controls exist: 95 ± 5 ℃; After the sheet material cooling after extruding, put into crusher for crushing, grind to form 200-220 purpose powder, the packing warehouse-in, the powder curing condition is: solidification value 150-180 ℃, be incubated 18-22 minute.

Adopt the electrostatic spraying constructional method to act on the washing machine shell surface of spray treatment this powder coating, abundant curing through 180 ℃, naturally cool to room temperature, after placing 24h, measure coating performance, its coating shock strength 〉=95cm, salt-fog resistant time 〉=408h, artificial accelerated aging time 〉=2980h, resistance toheat 〉=550 ℃, exposure to weather(ing) 14 months is non-foaming, non-corrosive, do not ftracture, do not peel off.

Claims (3)

1. the powder coating of a loaded zirconia is characterized in that the weight part of its constitutive material is: Resorcinol bisglycidyl ether type Resins, epoxy 41-43, terpine resin T-80 7.5-9.5, zirconium white 4-6, aluminium nitride powder 1.5-1.7, urotropine 0.7-1.0, copper bronze 1.8-2.2, nanomete talc powder 33-35, organosilicon flow agent 1.3-1.5, water drain silica 1-2, oxidation inhibitor DSTP 1.6-1.8, n-BMA 2-4, nano-calcium carbonate 4-6 and film-forming resin 1.8-2.2.

2. the powder coating of loaded zirconia according to claim 1 is characterized in that the weight part of its constitutive material is: Resorcinol bisglycidyl ether type Resins, epoxy 42, terpine resin T-808.5, zirconium white 5, aluminium nitride powder 1.6, urotropine 0.9, copper bronze 2.0, nanomete talc powder 34, organosilicon flow agent 1.4, water drain silica 1.5, oxidation inhibitor DSTP 1.7, n-BMA 3, nano-calcium carbonate 5 and film-forming resin 2.0.

3. the preparation method of the powder coating of a loaded zirconia as claimed in claim 1 is characterized in that may further comprise the steps:

(1) preparation of film-forming resin: press compositing formula urea 3-5, clorafin 5-7, poly terephthalic acid diethyl ester 3-5, polyoxyethylene glycol 4-6, silver powder 0.2-0.3, rosin 0.3-0.5, hexanodioic acid propylene glycol polyester 3-5, aluminium nitride powder 2-3,2,4-dichlorobenzoperoxide 0.2-0.3 and zinc oxide 0.3-0.5; Production method is as follows:

A: clorafin, poly terephthalic acid diethyl ester, polyoxyethylene glycol, rosin, hexanodioic acid propylene glycol polyester, aluminium nitride powder are added stainless steel cauldron, be warming up to 110 ± 5 ℃, start and stir adding urea, 2,4-dichlorobenzoperoxide, zinc oxide, silver powder;

B: be warmed up to 180-195 ℃ with 50-60 ℃ of/hour speed then; React to stop in 1-2 hour heating and obtain;

(2) weight part by constitutive material takes by weighing each raw material, prepares burden then and puts into mixing machine and mix, and the compound that mixes is put into twin screw extruder extrude, and a district temperature of forcing machine is controlled and existed: 75 ± 8 ℃; Two district's temperature controls exist: 95 ± 5 ℃; After the sheet material cooling after extruding, put into crusher for crushing, grind to form 200-220 purpose powder, the packing warehouse-in, the powder curing condition is: solidification value 150-180 ℃, be incubated 18-22 minute.