阅读说明：本技术 Led冷光源固化玻璃涂层材料制备及其应用方法 (Preparation and application method of LED cold light source cured glass coating material ) 是由 罗湘南 邱木生 于 2021-07-21 设计创作，主要内容包括：本发明公开了LED冷光源固化玻璃涂层材料制备及其应用方法,其原料组成按所占重量配比：聚酯丙烯酸树脂20-30％、改性聚氨酯25-35％、丙烯酸羟乙酯15-18％、乙二醇二丙烯酸酯18-20％、异冰片基丙烯酸酯20％、光敏剂6-8％、助剂1-2％、填料5-10％。使用LED冷光源固化涂料相比较传统的热固化涂料能有效节能95％以上,并且能够达到零VOC排放。(The invention discloses a preparation method and an application method of an LED cold light source cured glass coating material, wherein the raw materials comprise the following components in parts by weight: 20-30% of polyester acrylic resin, 25-35% of modified polyurethane, 15-18% of hydroxyethyl acrylate, 18-20% of ethylene glycol diacrylate, 20% of isobornyl acrylate, 6-8% of photosensitizer, 1-2% of auxiliary agent and 5-10% of filler. Compared with the traditional thermosetting coating, the LED cold light source curing coating can effectively save energy by more than 95 percent and can achieve zero VOC emission.)

The preparation method and the application method of the LED cold light source cured glass coating material are characterized in that the coating material comprises the following raw materials in parts by weight: 20-30% of polyester acrylic resin, 25-35% of modified polyurethane, 15-18% of hydroxyethyl acrylate, 18-20% of ethylene glycol diacrylate, 20% of isobornyl acrylate, 6-8% of photosensitizer, 1-2% of auxiliary agent and 5-10% of filler. The method comprises the following steps:

the method comprises the following steps: controlling the temperature to be less than 60 ℃, and uniformly mixing and stirring the polyester acrylic resin, the modified polyurethane, the hydroxyethyl acrylate, the ethylene glycol diacrylate, the isobornyl acrylate and the filler according to the weight ratio;

step two: controlling the temperature to be less than 60 ℃, and then mixing the mixture with a photosensitizer and an auxiliary agent to obtain a mixture;

step three: grinding the mixture on a three-roll mill;

step four: the ground mixture was cured by applying it to the surface of the glass for 8-10 seconds.

2. The preparation method and the application method of the LED cold light source cured glass coating material according to claim 1 are characterized in that: the photosensitizer is a free radical photoinitiator, preferably one or more selected from IHT-PI 151, IHT-PI 907, IHT-PI 910, IHT-PI 659, IHT-PI MBF, IHT-PI 4265 and IHT-PI 500.

3. The preparation method and the application method of the LED cold light source cured glass coating material according to claim 1 are characterized in that: the auxiliary agent comprises an aqueous flatting agent BYK-333, a flatting agent BYK-310, a flatting agent BYK354, TEGO Foamex N, a polyacrylate flatting agent BYK358N, a defoaming agent KS66 and a dispersing agent Anti-Terra-204, or a combination of any two or more of the above.

4. The preparation method and the application method of the LED cold light source cured glass coating material according to claim 1 are characterized in that: the filler comprises one or more of calcium carbonate, barium sulfate, stone dust or alumina.

5. The preparation method and the application method of the LED cold light source cured glass coating material according to claim 1 are characterized in that: the temperature of the whole preparation process is controlled below 60 ℃.

6. The preparation method and the application method of the LED cold light source cured glass coating material according to claim 1 are characterized in that: the mixture is ground for a plurality of times in a three-roller machine to obtain the fineness of less than 5 mu m.

7. The preparation method and the application method of the LED cold light source cured glass coating material according to claim 1 are characterized in that: the ground mixture is coated on the surface of glass and then is irradiated by an LED 395 wave band for 8-10 seconds to finish curing.

8. The preparation method and the application method of the LED cold light source cured glass coating material according to claim 1 are characterized in that: the coating is mainly applied to glass and wine bottles.

Technical Field

The invention belongs to the field of coatings for improving mechanical property, heat resistance and water resistance by LED photocuring, and particularly relates to a composition of a coating for improving mechanical property, heat resistance and water resistance by LED cold light source curing and a preparation method thereof.

Background

The LED photocuring ink is photocured by adopting a cold light source, and is low in smell, environment-friendly and non-toxic. The coating film has uniform fineness and good leveling property, has excellent adhesion to a substrate after being cured, and has high hardness, luster, good water resistance and chemical resistance.

The traditional coating is generally cured by heat or UV light, the energy consumption is high, compared with the traditional heat-cured coating, the LED cold light source cured coating can effectively save energy by more than 95 percent, compared with the UV light-cured coating, the energy is saved by more than 80 percent, the mercury emission of a UV lamp is reduced, and the zero VOC emission can be achieved.

Therefore, in order to solve the problems, the preparation method and the application method of the LED cold light source cured glass coating material are provided.

Disclosure of Invention

The invention aims to provide a preparation method and an application method of an LED cold light source cured glass coating material, and aims to solve the problems that the traditional coating provided in the background art is generally cured by heat or UV light, the energy consumption is high, compared with the traditional heat-cured coating, the LED cold light source cured coating can effectively save energy by more than 95%, compared with the UV light-cured coating, the energy is saved by more than 80%, the mercury emission of a UV lamp is reduced, and the zero VOC emission can be achieved.

In order to achieve the purpose, the invention provides the following technical scheme: the preparation and application method of the LED cold light source cured glass coating material comprises the following raw materials in parts by weight: 20-30% of polyester acrylic resin, 25-35% of modified polyurethane, 15-18% of hydroxyethyl acrylate, 18-20% of ethylene glycol diacrylate, 20% of isobornyl acrylate, 6-8% of photosensitizer, 1-2% of auxiliary agent and 5-10% of filler. The method comprises the following steps:

the method comprises the following steps: controlling the temperature to be less than 60 ℃, and uniformly mixing and stirring the polyester acrylic resin, the modified polyurethane, the hydroxyethyl acrylate, the ethylene glycol diacrylate, the isobornyl acrylate and the filler according to the weight ratio;

step two: controlling the temperature to be less than 60 ℃, and then mixing the mixture with a photosensitizer and an auxiliary agent to obtain a mixture;

step three: grinding the mixture on a three-roll mill;

step four: the ground mixture was cured by applying it to the surface of the glass for 8-10 seconds.

Preferably, the photosensitizer is a free radical type photoinitiator, and is preferably selected from one or more of IHT-PI 151, IHT-PI 907, IHT-PI 910, IHT-PI 659, IHT-PI MBF, IHT-PI 4265 and IHT-PI 500.

Preferably, the auxiliary agent comprises an aqueous leveling agent BYK-333, a leveling agent BYK-310, a leveling agent BYK354, TEGO Foamex N, a polyacrylate leveling agent BYK358N, an antifoaming agent KS66 and a dispersing agent Anti-Terra-204, or a combination of any two or more of the above.

Preferably, the filler comprises one or more of calcium carbonate, barium sulfate, stone dust or alumina.

Preferably, the temperature of the whole preparation process is controlled below 60 ℃.

Preferably, the mixture is ground in a three-roller machine for a plurality of times to obtain a fineness of less than 5 μm.

Preferably, the mixture after grinding is coated on the surface of the glass and is irradiated by an LED 395 wave band for 8-10 seconds to finish the curing.

Preferably, the coating is applied mainly to glass and wine bottles.

Compared with the prior art, the invention has the beneficial effects that:

1. the product can reach zero VOC emission. Meeting increasingly stringent environmental protection policies.

2. The product is cured by using a cold light source (LED photocuring), and saves energy by more than 90% compared with the traditional thermal curing. Compared with UV light curing, the energy is saved by more than 80%.

2. The product is cured by using a cold light source (LED light curing), and the curing is finished after the light irradiation time is 8-10 seconds, so that the curing time is greatly saved.

4. The LED cold light source curing glass coating material is simple to operate, and can be automatically matched with special cold light source curing equipment.

5. The LED cold light source cured glass coating material is moisture-proof and mildew-proof, improves the environmental protection and energy saving of mechanical property coatings, and can reach various properties of traditional coatings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment provided by the invention comprises the following steps:

the first embodiment of the preparation and application method of the LED cold light source cured glass coating material comprises the following steps: controlling the temperature below 60 ℃, mixing and stirring 20-30% of polyester acrylic resin, 25-35% of modified polyurethane, 15-18% of hydroxyethyl acrylate, 18-20% of ethylene glycol diacrylate, 20% of isobornyl acrylate and 5-10% of filler uniformly according to the weight ratio, then mixing with 6-8% of photosensitizer and 1-2% of auxiliary agent to obtain a mixture, and finally coating the mixture on the surface of glass for 10 seconds to finish curing.

Example two, the method is implemented in Shenzhen SMT factory, which originally uses the thermal curing paint with the curing condition of 70 ℃ baking for 30 MIN. After the LED coating is changed, the coating is brushed, and then the curing is finished by irradiating for 10 seconds by using an LED 395 wave band. The parameters after curing for both coatings were as follows:

it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.