CN100999640B - Non-solvent type aluminum foil coating for air conditioner - Google Patents

Abstract

The present invention relates to aluminum foil paint technology, and is especially one kind of no-solvent aluminum foil paint for air conditioner. The no-solvent aluminum foil paint consists of water soluble resin composition 5-10 wt%, curing agent 1-5 wt%, additive 0.1-2 wt% and water 80-90 wt%. The water soluble resin composition consists of double bond amino monomer 20-60 wt%, unsaturated organic acid or its salt 5-50 wt%, and functional monomer 10-30 wt%. The paint is applied to fins of heat exchanger in air conditioner, and after being roasted at high temperature to cross-link and cure, it form coating with high corrosion resistance, excellent hydrophilicity, no bad smell and high flowing water flush resistance.

Description

Non-solvent type alumincum for air conditioner

Technical field:

The present invention relates to the alumincum for air conditioner technical field, particularly non-solvent type alumincum for air conditioner.

Background technology:

In recent years, the use of air-conditioning is more and more, and along with the influence of energy scarcity, conditioner also develops towards miniaturization.Distance between the fin of the interchanger in the conditioner is more and more littler at present, at present the distance between fin is less than 2mm, have in addition reached 1.2mm, the heat exchanger of air-conditioning is when work, airborne steam forms water droplet between the fin of heat exchanger, and further produce the water bridge, and make air flow resistance increase, air quantity descends, thereby influence the result of use of air-conditioning, and increase energy consumption simultaneously, cause noise, contaminate environment.Major part all contains the organic solvent of 8-10% in the existing alumincum for air conditioner, and in the high bake film process, solvent evaporates pollutes environment.In addition, for improving performance, a lot of alumincum for air conditioner contain mineral compound such as silicon, aluminium, zirconium, and this makes aluminium foil in the course of processing, grinding tool wearing and tearing aggravation.Simultaneously, in existing alumincum for air conditioner, much mentioned nano material,, inevitably caused ingredient requirement harshness, cost are raised up though good effect is arranged.More and more higher to the hydrophilic coating performance requriements at present, detection means is also more and more stricter, does not much reach the higher detection requirement in the existing alumincum for air conditioner.

Summary of the invention:

The objective of the invention is provides non-solvent type alumincum for air conditioner at the deficiencies in the prior art, the aluminium foil that this coating of process was handled, have good anti-corrosion, excellent wetting ability, free from extraneous odour, thus can improve greatly air-conditioning service efficiency, prolong air-conditioning work-ing life, save the energy.

For achieving the above object, the present invention adopts following technical scheme:

Percentage ratio meter by weight, system component is as follows:

A: water soluble resin composite, 5～10%;

The synthetic raw material of this resin combination comprises: account for the weight percentage of water soluble resin composite by synthetic raw material,

A): two key amino monomers, 20～60%;

B): unsaturated organic acid or its salt, 5～50%;

C): functional monomer, 10～30%;

B: solidifying agent, 1～5%;

C: paint additive, 0.1～2%;

D: water, 80～90%;

Wherein, described pair of key amino monomers comprises: acrylamide, n-methylolacrylamide, methacrylic acid N, the mixture of one or more in N-dimethylaminoethyl, the diacetone-acryloamide(DAA);

Wherein, described unsaturated organic acid or its salt comprise: the mixture of one or more in vinylformic acid, methylene-succinic acid, toxilic acid, 2-acrylamide-2 methyl propane sulfonic acid, styrene sulfonic acid, vinyl sulfonic acid and sylvite thereof, sodium salt, ammonium salt, the zinc salt etc.;

Wherein, described functional monomer is the unsaturated ester class that contains hydroxyl, comprising: the mixture of one or more in Hydroxyethyl acrylate, Propylene glycol monoacrylate, the acryllic acid hydroxy butyl ester;

Wherein, described solidifying agent be can with the compound of hydroxyl in the water soluble resin, carboxyl, amino reaction, comprising: trimethylol melamine, etherified amino resins, 2D resin, etherificate 2D resin, urea, oxalic dialdehyde, one or more mixtures in the glutaraldehyde.

Paint additive comprises: the mixture of one or more in wetting agent, flow agent, sanitas, the dispersion agent.

The invention has the beneficial effects as follows: do not contain organic solvent, reduced environmental pollution; Do not add mineral compound, in the aluminium foil course of processing, reduced the wearing and tearing of grinding tool; Use common chemical feedstocks, reduced production cost; Excellent property can reach the higher detection requirement; In addition, this coating compound is through high bake, and behind the crosslinking curing, the wetting ability, free from extraneous odour, the anti-flowing water that make air-condition heat exchanger fin have erosion resistance, excellence wash away.

Embodiment:

Example 1:

Being prepared as follows of water soluble resin and solution thereof promptly is that water and water soluble resin are mixed into solution:

The A component: water soluble resin composition and water, by weight

Acrylamide 13

N-methylolacrylamide 18

2-acrylamide-2 methyl propane sulfonic acid 20

Hydroxyethyl acrylate 24

Vinylformic acid 25

Deionized water 400

The B component, initiator:

Ammonium persulphate 0.5

Deionized water 500

Initiator uses very general in chemical technology, does not give unnecessary details at this; The B component that mixes adds reactor, stir, heat to 80 ℃, splash into the A component, 1.5h in drip off, 80～85 ℃ of insulation reaction 4h are warmed up to 90 ℃, reaction 1h, be cooled to and be lower than 50 ℃ and promptly can obtain water soluble resin, device is airtight in the reaction process, and moisture content can not evaporated, and is reused.

No-solvent type alumincum composed as follows:

Water soluble resin solution: 95.5g

Methyl-etherified aminoresin: 2g

Wetting agent: 1g

Flow agent: 1g

Mould inhibitor: 0.5g

Above component mixed get final product.

Example 2:

Being prepared as follows of water soluble resin and solution thereof promptly is that water and water soluble resin are mixed into solution:

The A component: water soluble resin composition and water, by weight

Methacrylic acid N, N-dimethylaminoethyl 6

N-methylolacrylamide 16

Styrene sulfonic acid 7

2-acrylamide-2 methyl propane sulfonic acid 20

Hydroxyethyl acrylate 26

Vinylformic acid 25

Deionized water 400

The B component, initiator:

Ammonium persulphate 0.5

Deionized water 500

No-solvent type alumincum composed as follows:

Water soluble resin solution: 92.5g

2D resin 5g

Wetting agent: 1g

Flow agent: 1g

Mould inhibitor: 0.5g

Above component mixed get final product.

Example 3:

Being prepared as follows of water soluble resin and solution thereof promptly is that water and water soluble resin are mixed into solution:

The A component: water soluble resin composition and water, by weight

N-methylolacrylamide 20

Diacetone-acryloamide(DAA) 7

Vinyl sulfonic acid sylvite 12

2-acrylamide-2 methyl propane sulfonic acid 20

Hydroxyethyl methylacrylate 26

Methylene-succinic acid 15

Deionized water 400

The B component, initiator:

Ammonium persulphate 0.5

Deionized water 500

No-solvent type alumincum composed as follows:

Water soluble resin solution: 94.5g

Trimethylol melamine 2g

Oxalic dialdehyde 1g

Wetting agent: 1g

Flow agent: 1g

Mould inhibitor: 0.5g

Above component mixed get final product.

Concrete testing method is as follows:

A): hydrophilic angular measurement of initial stage is fixed

Adopt sessile drop method, measure with contact angle instrument;

B): the hydrophilic angular measurement of degreasing is fixed

Coating sample soaks earlier 5min in volatile oil, at 150 ± 5 ℃ of baking 5min, soak in deionized water among the 5min, at 150 ± 5 ℃ of baking 5min, measures its hydrophilic angle then;

C): it is fixed to continue hydrophilic angular measurement

With sample 100h in flowing water (flow is 300L/h), take out oven dry below 100 ℃, measure its hydrophilic angle.

D): sticking power is measured

The grid test, reference to standard GB9286;

E): salt-fog test

Reference to standard GB/T1771;

G): the hydrophilic angular measurement of drying and watering cycle is fixed

Sample behind the 2min,, is repeated 300 times for once with wind 6min in deionized water, measure its hydrophilic angle;

H): the coating odor test

Adopt 5 people's evaluation methods, sample is put into 200 ± 10 ℃ bellows, take out behind the 5min, whether peculiar smell is arranged with sense of smell check coating.

Performance test requires:

Hydrophilic angle of initial stage is less than 5 degree

The hydrophilic angle of degreasing is less than 10 degree

Continue hydrophilic angle less than 15 degree

Sticking power is measured one-level

More than the salt-fog test 9.5 and 9.5

The hydrophilic angle of drying and watering cycle is less than 25 degree

Coating smell free from extraneous odour

The detection architecture of the embodiment of the invention is as shown in the table:

Embodiment	Hydrophilic angle of initial stage	The hydrophilic angle of degreasing	Continue hydrophilic angle	The hydrophilic angle of drying and watering cycle	Sticking power	The coating smell	Neutral salt spray test
								Embodiment 1	3	6	14	23	One-level	Free from extraneous odour	9.5
Embodiment 2	4	8	11	22	One-level	Free from extraneous odour	9.8
								Embodiment 3	4	8	13	18	One-level	Free from extraneous odour	9.5

Claims (2)

1. non-solvent type alumincum for air conditioner is characterized in that: percentage ratio meter by weight, and system component is as follows:

A: water soluble resin composite, 5～10%;

The synthetic raw material of this resin combination comprises: account for the weight percentage of water soluble resin composite by synthetic raw material,

A): two key amino monomers, 20～60%;

B): unsaturated organic acid or its salt, 5～50%;

C): functional monomer, 10～30%;

B: solidifying agent, 1～5%;

C: paint additive, 0.1～2%;

D: water, 80～90%;

Wherein, described pair of key amino monomers comprises: acrylamide, n-methylolacrylamide, methacrylic acid N, the mixture of one or more in N-dimethylaminoethyl, the diacetone-acryloamide(DAA);

Wherein, described unsaturated organic acid or its salt comprise: the mixture of one or more in vinylformic acid, methylene-succinic acid, toxilic acid, 2-acrylamide-2 methyl propane sulfonic acid, styrene sulfonic acid, vinyl sulfonic acid and sylvite thereof, sodium salt, ammonium salt, the zinc salt;

Wherein, described functional monomer is the unsaturated ester class that contains hydroxyl, comprising: the mixture of one or more in Hydroxyethyl acrylate, Propylene glycol monoacrylate, the vinylformic acid hydroxy butyl ester;

Wherein, described solidifying agent be can with the compound of hydroxyl in the water soluble resin, carboxyl, amino reaction, comprising: trimethylol melamine, etherified amino resins, 2D resin, etherificate 2D resin, urea, oxalic dialdehyde, one or more mixtures in the glutaraldehyde.

2. non-solvent type alumincum for air conditioner according to claim 1 is characterized in that: paint additive comprises: the mixture of one or more in wetting agent, flow agent, sanitas, the dispersion agent.