阅读说明：本技术 一种电子束固化的金属包装涂料及其制备方法 (A kind of metal packaging coating of electronic beam curing and preparation method thereof ) 是由 王剑 徐明金 洪晓明 张文邦 于 2019-09-09 设计创作，主要内容包括：本发明公开了一种电子束固化的金属包装涂料及其制备方法,涉及金属包装涂料技术领域。其技术要点是：一种电子束固化的金属包装涂料,包括如下重量份数的组分：改性酚醛环氧丙烯酸酯40-70份；三乙氧基硅烷4-6份；填料20-30份；颜填料10-20份；分散剂1-2份；消泡剂0.1-0.5份；流平剂0.1-0.8份。采用本发明配方生产出来的金属包装涂料具有高附着力、高柔韧性的优点。(The invention discloses metal packaging coatings of a kind of electronic beam curing and preparation method thereof, are related to metal packaging coating technical field.It is characterized in that: a kind of metal packaging coating of electronic beam curing, the component including following parts by weight: 40-70 parts of modified phenolic epoxy acrylate；4-6 parts of triethoxysilane；20-30 parts of filler；10-20 parts of pigments and fillers；1-2 parts of dispersing agent；0.1-0.5 parts of defoaming agent；0.1-0.8 parts of levelling agent.Have the advantages that high adhesion force, high-flexibility using the metal packaging coating that inventive formulation is produced.)

1. a kind of metal packaging coating of electronic beam curing, which is characterized in that the component including following parts by weight:

40-70 parts of modified phenolic epoxy acrylate；

4-6 parts of triethoxysilane；

0-30 parts of filler；

10-20 parts of pigments and fillers；

1-2 parts of dispersing agent；

0.1-0.5 parts of defoaming agent；

0.1-0.8 parts of levelling agent.

2. the metal packaging coating of electronic beam curing according to claim 1, which is characterized in that the modified phenolic epoxy The preparation step of acrylate are as follows: novolac epoxy resin, acrylic acid and toluene are mixed, N, N- bis- that parts by weight are 2% is added Methylaniline, reacts 2-3h under conditions of 75-90 DEG C, after natural cooling, is extracted 3-4 times with anhydrous ether, obtains dope, Dope is dried in vacuo at 50 DEG C for 24 hours to get.

3. the metal packaging coating of electronic beam curing according to claim 2, which is characterized in that the novolac epoxy resin Molar ratio with acrylic acid is 1:(0.25-1).

4. the metal packaging coating of electronic beam curing according to claim 1, which is characterized in that the filler is selected from titanium white One of powder and wax powder are a variety of.

5. the metal packaging coating of electronic beam curing according to claim 1, which is characterized in that the pigments and fillers are selected from charcoal One of black, silica, iron oxide, silicon powder are a variety of.

6. the metal packaging coating of electronic beam curing according to claim 1, which is characterized in that the dispersing agent is selected from ten One of sodium dialkyl sulfate, methyl anyl alcohol and polyacrylamide are a variety of.

7. the metal packaging coating of electronic beam curing according to claim 1, which is characterized in that the defoaming agent uses L- 1000 universal organic silicon defoamers, the levelling agent use EFKA3777.

8. a kind of preparation method of the metal packaging coating of electronic beam curing, which comprises the following steps:

Step 1, by the 1/4~1/2 of modified phenolic epoxy acrylate total amount, triethoxysilane, antirust filler, pigments and fillers, Dispersing agent stirs evenly resulting mixture；

The mixture stirred evenly in step 1 is placed in grinding distribution in grinder, obtains mill base by step 2；

Step 3 mixes the mill base prepared in step 2 with remaining modified phenolic epoxy acrylate, in 1000-1200r/ Min stirs 15-30min；

Levelling agent and defoaming agent are added into the system of step 3 for step 4, continue to stir 0.5-1h, obtain electronic beam curing Metal packaging coating.

Technical field

The present invention relates to metal packaging coating technical fields, more specifically, it relates to a kind of metal of electronic beam curing Package coating and preparation method thereof.

Background technique

Metal packaging coating is that an important branch of industrial coating is prevented using its sealing process to metal surface Extraneous water, air, solution etc. generates corrosion, oxidation effect to metal material.Moreover, different producers can also install in painting Metal surface carry out fine arts processing.Thus metal packaging coating is widely used in the processing of various metal cans, and right Tank body itself plays protection, decoration function.

EB ink is referred to as using the ink of EB (electron beam) energy-curable, electronic beam curing has many merits, such as fast Speed, energy conservation, electronic beam curing only need several seconds；After solidification more thoroughly, curing degree is solid after being not necessarily to up to 95-100% Change, strong relative to UV penetrance, capacity usage ratio is high, conversion ratio is up to 95% or more, high production efficiency.

Conventional metals package coating is all baking vanish at present, and there are a large amount of solvents, environment easy to pollute, low wait of production efficiency is lacked Point, and radiation curing has environmental protection, high-efficient, the advantages such as low energy consumption, wherein UV (ultraviolet light) solidification is usually used in mental package painting The varnish field of material, for the high covering power colored paint field of thickness 7um or more, UV, which exists, solidifies very incomplete defect, and EB (electron beam) solidification has good deep cure ability, can effectively make up UV and solidify incomplete defect, but compared to Traditional metallic paint, the feelings that EB cured paint film bends in metal, extends, is also easy to produce cracking, breakage in the process of punching press Condition.

It is, therefore, desirable to provide a kind of new scheme solves the above problems.

Summary of the invention

In view of the deficienciess of the prior art, the purpose of the present invention one is to provide a kind of mental package of electronic beam curing Coating has the advantages that high adhesion force, high-flexibility.

To achieve the above object one, the present invention provides the following technical scheme that

A kind of metal packaging coating of electronic beam curing, the component including following parts by weight:

40-70 parts of modified phenolic epoxy acrylate；

4-6 parts of triethoxysilane；

0-30 parts of filler；

10-20 parts of pigments and fillers；

1-2 parts of dispersing agent；

0.1-0.5 parts of defoaming agent；

0.1-0.8 parts of levelling agent.

By using above-mentioned technical proposal, the application, as substrate, is a kind of function admirable using novolac epoxy resin Neo-epoxy resin, hardness with higher after solidification, the comprehensive performances such as higher flexibility.The present invention uses acrylic acid pair Novolac epoxy resin is modified processing, and the access with double bond acrylic acid may make electron beam directly to novolac epoxy resin Radically curing is carried out, without additionally introducing initiator, the advantage of doing so is that reducing the cost of product, and paint solidification Afterwards, no initiator remains in curing system, substantially increases the performance in coating use process.

The present invention has been additionally added triethoxysilane, and silane coupling agent is chemical anti-with can mutually occur with matrix phase and substrate The active function groups answered, and the silicon end group containing hydrolyzable condensation can greatly improve phenolic aldehyde ring after acrylic acid access The adhesive force of oxygen resin.

Further preferably, which is characterized in that the preparation step of the modified phenolic epoxy acrylate are as follows: by phenolic aldehyde ring Oxygen resin, acrylic acid and toluene mixing, are added the n,N-Dimethylaniline that parts by weight are 2%, anti-under conditions of 75-90 DEG C It answers 2-3h, after natural cooling, is extracted 3-4 times with anhydrous ether, obtain dope, dope is dried in vacuo for 24 hours at 50 DEG C, To obtain the final product.

By using above-mentioned technical proposal, wherein toluene is solvent, provides the ring that novolac epoxy resin is reacted with acrylic acid Border, n,N-Dimethylaniline play the role of catalyst, and the epoxy group of epoxy resin is a kind of tension link, and C, O electronegativity are different And have polarity, under the action of electrophilic reagent so that epoxy ring-opening and polymerization reaction occurs so that on resin grafting can electricity The cured double bond of beamlet.

Further preferably, which is characterized in that the molar ratio of the novolac epoxy resin and acrylic acid is 1:(0.25-1).

Further preferably, the filler is selected from one of titanium dioxide and wax powder or a variety of.

Further preferably, the pigments and fillers are selected from one of carbon black, silica, iron oxide, silicon powder or a variety of.

By using above-mentioned technical proposal, pigments and fillers are selected from inorganic or organic dust, primarily serve covering and colouration effect, The performance that coating can also be improved simultaneously, improves mechanical strength, adhesive force, antiseptic property and the light resistance of paint film.

Further preferably, the dispersing agent in lauryl sodium sulfate, methyl anyl alcohol and polyacrylamide one Kind is a variety of.

By using above-mentioned technical proposal, dispersing agent is that a kind of intramolecular has lipophilic and two kinds of hydrophily on the contrary simultaneously The interfacial agent of property uniform can disperse to be insoluble in inorganic, the organic filler of resin, at the same can also prevent particle sedimentation and Cohesion, forms stable mixed system.

Further preferably, the defoaming agent uses the universal organic silicon defoamer of L-1000, and the levelling agent uses EFKA3777。

By using above-mentioned technical proposal, defoaming agent is also referred to as defomaing agent, can eliminate the bubble that coating is formed in process of production Foam；Levelling agent is a kind of common coating additive, can promote coating formed during the drying and film forming process one it is smooth, smooth, Uniform film can be effectively reduced and cover with paint, lacquer, colour wash, etc. liquid surface tension, improve a substance of its levelability and uniformity.Covering with paint can be improved The permeability of liquid, increases spreadability at a possibility that spot and spot are generated when can be reduced brushing, make film forming uniformly, it is natural.

The purpose of the present invention two is to provide a kind of preparation method of the metal packaging coating of electronic beam curing, using the party The metal packaging coating of method preparation has the advantages that high adhesion force, high-flexibility.

To achieve the above object two, the present invention provides the following technical scheme that

A kind of preparation method of the metal packaging coating of electronic beam curing, comprising the following steps:

Step 1, by the 1/4~1/2 of modified phenolic epoxy acrylate total amount, triethoxysilane, antirust filler, pigments and fillers, Dispersing agent stirs evenly resulting mixture；

The mixture stirred evenly in step 1 is placed in grinding distribution in grinder, obtains mill base by step 2；

Step 3 mixes the mill base prepared in step 2 with remaining modified phenolic epoxy acrylate, in 1000-1200r/ Min stirs 15-30min；

Levelling agent and defoaming agent are added into the system of step 3 for step 4, continue to stir 0.5-1h, obtain electronic beam curing Metal packaging coating.

In conclusion compared with prior art, the invention has the following advantages:

(1) present invention is modified processing to novolac epoxy resin using acrylic acid, and the access with double bond acrylic acid may make Electron beam directly carries out radically curing to novolac epoxy resin, without additionally introducing initiator, the advantage of doing so is that reducing The cost of product, and after paint solidification, no initiator remains in curing system, substantially increase in coating use process Performance；

(2) present invention has been additionally added triethoxysilane, and silane coupling agent is chemical anti-with can mutually occur with matrix phase and substrate The active function groups answered, and the silicon end group containing hydrolyzable condensation can greatly improve phenolic aldehyde ring after acrylic acid access The adhesive force of oxygen resin；

(3) the present invention also provides a kind of preparation methods of metal packaging coating, and volatility is low, solvent-free, the metal of preparation Coating has excellent weather resistance, smell is low, meets national requirements for environmental protection.

Detailed description of the invention

Fig. 1 is process flow chart of the invention.

Specific embodiment

With reference to the accompanying drawings and examples, the present invention will be described in detail.It is worth noting that wherein being not specified specific Condition person, lower according to conventional conditions or manufacturer's recommended conditions to carry out, reagents or instruments used without specified manufacturer, For the conventional products that can be obtained by commercially available purchase.