CN103012662B - Preparation method for emulsion used for high temperature-resistant aluminized transfer glue - Google Patents

Abstract

The invention relates to a preparation method of an emulsion used for high temperature-resistant aluminized transfer glue. The emulsion is prepared by the following raw materials of methyl methacrylate, butyl acrylate, acrylic acid, methacrylic acid, organosilane, an initiator, a compound emulsifier and deionized water. Compared a conventional emulsion, the emulsion provided by the invention has the beneficial effects that the emulsion has excellent moisture proof ability and scratch resistance; the emulsion can endure a high temperature of 180 DEG C, a resin film does not loose gloss or change into yellow, the aluminium layer does not loose gloss or change color at the temperature of 180 DEG C, the emulsion has extremely good protection capacity for the aluminium layer; the production process has no pollutions toward the environment, and the product is colorless and nontoxic, has no pungent smell and is an environment-friendly product.

Description

A kind of preparation method of high temperature resistant transfer adhesive emulsion of aluminizing

[technical field] the present invention relates to package printing material, is specifically related to a kind of preparation method of high temperature resistant transfer adhesive emulsion of aluminizing.

[background technology] transfer adhesive should have following characteristic: 1. printing adaptability is good, is easy to coating, rapidly dry; 2. excellent rippability, solvent resistance, suitable initial bond strength; 3. good rub resistance and the transparency; 4. to aluminium coated surface, there is anti-oxidant and moisture-proof role, otherwise the aluminium coated moisture absorption of its lower floor is wrinkling, loss of gloss, obfuscation, blackout after oxidation.But the quality of its masterbatch emulsion used directly affects the quality of transfer adhesive performance.At present, the technology of domestic transfer adhesive owes ripe, because solvent resistance is poor, when being coated with key coat or information layer, often there will be and stinging end phenomenon.Particularly need to stand temperature, friction, solvent environment in the laser molding, printing process in later stage, transfer adhesive coating need heatproof, abrasion-resistant, solvent resistant corrode could protect the lasting light of aluminium lamination, wrinkle resistant, be not oxidized.So the transfer adhesive emulsion of exploitation excellent property improves the most basic approach of transfer adhesive performance.

[summary of the invention] the invention provides a kind of pollution-free, preparation method with excellent anti-moisture absorption performance, friction resistant performance and high temperature resistant transfer adhesive emulsion of aluminizing, to overcome the above-mentioned defect that prior art exists.

A kind of preparation method of high temperature resistant transfer adhesive emulsion of aluminizing, its raw material is made up of following component, the parts by weight of each component are as follows, methyl methacrylate 20-40 part, butyl acrylate 20-40 part, vinylformic acid 5-10 part, methacrylic acid 5-10 part, organosilane 1-10 part, initiator 0.6-1.5 part, mixed emulsifier 0.8-2.5 part and deionized water 70-120 part; Described organosilane is the organosilicon function monomer containing vinyl-functional; Described initiator is ammonium persulphate, and described mixed emulsifier is made up of Polyethylene Octylphenol Ether, Sodium dodecylbenzene sulfonate, sodium vinyl sulfonate, it is characterized in that, preparation process is as follows:

One, 40-60 part deionized water and 0.4-1.2 part mixed emulsifier are joined in reactor, stir and obtain mixing solutions after being warming up to 70 ± 3 DEG C;

Two, again 5-10 part vinylformic acid, 5-10 part methacrylic acid, 20-40 part butyl acrylate, 20-40 part methyl methacrylate, 1-10 part organosilane and 0.4-1.3 part mixed emulsifier are blended in the pre-emulsification still of 30-60 part deionized water, stand-by after stirring 30min;

Three, then the mixing solutions in reactor in step one is warming up to 70 ± 3 DEG C, adds the mixed monomer solution of 10% weight part stand-by in step 2, after stablizing 15min, add the aqueous solution being dissolved with 0.2-0.5 part initiator, control polymerization temperature 80-82 DEG C;

Four, continue the temperature in reactor to control at 80-82 DEG C, drip residue mixed monomer solution obtained in step 2 and the aqueous solution being dissolved with 0.4-1 part initiator, and time for adding is controlled be added dropwise to complete in 3.5-4h, then control temperature 80-82 DEG C be incubated 2 hours;

Five, finally lower the temperature, when question response still temperature is down to 40 DEG C, discharging, obtains transfer adhesive emulsion.

Described methyl methacrylate can improve hardness and the tensile strength of transfer adhesive; Described butyl acrylate can make transfer adhesive have good snappiness and extensibility; Described vinylformic acid, methacrylic acid are introduced with polar group, can increase the sticking power of transfer adhesive.

Described organosilane be not facile hydrolysis containing vinyl-functional organosilicon function monomer, the transfer adhesive obtained can be made to have good heat-resisting, moistureproof and solvent resistance.

Described mixed emulsifier, owing to introducing reactive emulsifier copolymerization, reduces other emulsifier, improves the moisture resistance performance of transfer adhesive, makes the polymerization stability of emulsion not by pH value change shadow.

Compared with prior art, beneficial effect is in the present invention: have excellent anti-moisture absorption performance and anti-zoned performance; And high temperature resistantly reach 180 DEG C, not only resin molding not loss of gloss, non yellowing, and aluminium lamination not loss of gloss nondiscoloration when 180 DEG C, there is fabulous protective capability to aluminium lamination; Production process environmentally safe, and product colourless, nontoxic, have no irritating odor, be Green Product.

[embodiment] the present invention is described in detail below in conjunction with specific examples.

Embodiment 1:

1,40 parts of deionized waters, 0.17 part of Polyethylene Octylphenol Ether, 0.17 part of Sodium dodecylbenzene sulfonate and 0.09 part of sodium vinyl sulfonate are joined in reactor, stir and obtain mixing solutions after being warming up to 70 ± 3 DEG C;

2, again 5 parts of vinylformic acid, 8 parts of methacrylic acids, 30 parts of butyl acrylates, 35 parts of methyl methacrylates, the monomer of 6 parts of organosilanes, 0.36 part of Polyethylene Octylphenol Ether, 0.36 part of Sodium dodecylbenzene sulfonate and 0.18 part of sodium vinyl sulfonate are blended in the pre-emulsification still of 50 parts of deionized waters, stand-by after stirring 30min;

3, then the mixing solutions in reactor in step 1 is warming up to 70 ± 3 DEG C, adds the mixed monomer solution of in step 2 stand-by 10%, after stablizing 15min, add the aqueous solution being dissolved with 0.2 part of ammonium persulphate, control polymerization temperature 80-82 DEG C;

4, continue the temperature in reactor to control at 80-82 DEG C, drip residual monomer solution obtained in step 2 and the aqueous solution being dissolved with 0.7 part of ammonium persulphate, and controlled by time for adding to be added dropwise to complete in 3.5-4h, then control temperature 80-82 DEG C be incubated 2 hours;

5, finally lower the temperature, when question response still temperature is down to 40 DEG C, discharging, is transfer adhesive emulsion of the present invention.

Embodiment 2:

1,60 parts of deionized waters, 0.25 part of Polyethylene Octylphenol Ether, 0.25 part of Sodium dodecylbenzene sulfonate and 0.17 part of sodium vinyl sulfonate are joined in reactor, stir and obtain mixing solutions after being warming up to 70 ± 3 DEG C;

2, again 9 parts of vinylformic acid, 6 parts of methacrylic acids, 25 parts of butyl acrylates, 30 parts of methyl methacrylates, the monomer of 8 parts of organosilanes, 0.28 part of Polyethylene Octylphenol Ether, 0.30 part of Sodium dodecylbenzene sulfonate and 0.15 part of sodium vinyl sulfonate are blended in the pre-emulsification still of 55 parts of deionized waters, stand-by after stirring 30min;

3, then the mixing solutions in reactor in step 1 is warming up to 70 ± 3 DEG C, adds the mixed monomer solution of in step 2 stand-by 10%, after stablizing 15min, add the aqueous solution being dissolved with 0.3 part of ammonium persulphate, control polymerization temperature 80-82 DEG C;

4, continue the temperature in reactor to control at 80-82 DEG C, drip residual monomer solution obtained in step 2 and the aqueous solution being dissolved with 0.5 part of ammonium persulphate, and controlled by time for adding to be added dropwise to complete in 3.5-4h, then control temperature 80-82 DEG C be incubated 2 hours;

5, finally lower the temperature, when question response still temperature is down to 40 DEG C, discharging, is transfer adhesive emulsion of the present invention.

Embodiment 3:

1,55 parts of deionized waters, 0.36 part of Polyethylene Octylphenol Ether, 0.37 part of Sodium dodecylbenzene sulfonate and 0.18 part of sodium vinyl sulfonate are joined in reactor, stir and obtain mixing solutions after being warming up to 70 ± 3 DEG C;

2, again 7 parts of vinylformic acid, 5 parts of methacrylic acids, 35 parts of butyl acrylates, 27 parts of methyl methacrylates, the monomer of 9 parts of organosilanes, 0.42 part of Polyethylene Octylphenol Ether, 0.40 part of Sodium dodecylbenzene sulfonate and 0.21 part of sodium vinyl sulfonate are blended in the pre-emulsification still of 45 parts of deionized waters, stand-by after stirring 30min;

3, then the mixing solutions in reactor in step 1 is warming up to 70 ± 3 DEG C, adds the mixed monomer solution of in step 2 stand-by 10%, after stablizing 15min, add the aqueous solution being dissolved with 0.4 part of ammonium persulphate, control polymerization temperature 80-82 DEG C;

4, continue the temperature in reactor to control at 80-82 DEG C, drip residual monomer solution obtained in step 2 and the aqueous solution being dissolved with 0.9 part of ammonium persulphate, and controlled by time for adding to be added dropwise to complete in 3.5-4h, then control temperature 80-82 DEG C be incubated 2 hours;

5, finally lower the temperature, when question response still temperature is down to 40 DEG C, discharging, is transfer adhesive emulsion of the present invention.

The index of the transfer adhesive prepared by emulsion of the present invention is as shown in the table:

Project	Example 1	Example 2	Example 3	Market like product
					Resistance to elevated temperatures (180 DEG C)	Resin molding is loss of gloss non yellowing not, aluminium lamination not loss of gloss nondiscoloration	Resin molding is loss of gloss non yellowing not, aluminium lamination not loss of gloss nondiscoloration	Resin molding loss of gloss non yellowing, aluminium lamination not loss of gloss nondiscoloration	Resin molding loss of gloss xanthochromia, the variable color of aluminium lamination loss of gloss
Moisture resistance performance	Well	Well	Well	Difference
					Wear resistance	Not easily scratch	Not easily scratch	Not easily scratch	Easily scratch
Adhesive property	Do not depart from paper	Do not depart from paper	5% departs from paper	10% departs from paper
					Folding resistance	20 times without delamination	20 times without delamination	20 times without delamination	20 times without delamination
Aluminum transfer performance	Shift completely	Shift completely	Shift completely	Shift completely

Claims (1)

1. the preparation method of a high temperature resistant transfer adhesive emulsion of aluminizing, its raw material is made up of following component, the parts by weight of each component are as follows, methyl methacrylate 20-40 part, butyl acrylate 20-40 part, vinylformic acid 5-10 part, methacrylic acid 5-10 part, organosilane 1-10 part, initiator 0.6-1.5 part, mixed emulsifier 0.8-2.5 part and deionized water 70-120 part; Described organosilane is the organosilicon function monomer containing vinyl-functional; Described initiator is ammonium persulphate, and described mixed emulsifier is made up of Polyethylene Octylphenol Ether, Sodium dodecylbenzene sulfonate, sodium vinyl sulfonate, it is characterized in that, preparation process is as follows:

One, 40-60 part deionized water and 0.4-1.2 part mixed emulsifier are joined in reactor, stir and obtain mixing solutions after being warming up to 70 ± 3 DEG C;

Two, again 5-10 part vinylformic acid, 5-10 part methacrylic acid, 20-40 part butyl acrylate, 20-40 part methyl methacrylate, 1-10 part organosilane and 0.4-1.3 part mixed emulsifier are blended in the pre-emulsification still of 30-60 part deionized water, stand-by after stirring 30min;

Three, then the mixing solutions in reactor in step one is warming up to 70 ± 3 DEG C, adds the mixed monomer solution of 10% weight part stand-by in step 2, after stablizing 15min, add the aqueous solution being dissolved with 0.2-0.5 part initiator, control polymerization temperature 80-82 DEG C;

Four, continue the temperature in reactor to control at 80-82 DEG C, drip residue mixed monomer solution obtained in step 2 and the aqueous solution being dissolved with 0.4-1 part initiator, and time for adding is controlled be added dropwise to complete in 3.5-4h, then control temperature 80-82 DEG C be incubated 2 hours;

Five, finally lower the temperature, when question response still temperature is down to 40 DEG C, discharging, obtains transfer adhesive emulsion.