Environment-friendly type high performance water vacuum plastics-absorption adhesive
Technical field
The present invention relates to a kind of vacuum plastic-absorption, be specially a kind of environment-friendly type high performance water vacuum plastics-absorption adhesive.
Background technology
Vacuum plastic-absorption generally uses technology: glue is sprayed onto on the medium density fiberboard plate face by spray glue mode, leave standstill after the glue-line moisture evaporation dries film forming, sized medium density fiberboard is placed the vacuum forming board, by the heating mode that vacuumizes the PVC decorating film is overlayed on the medium density fiberboard face, thereby the glue-line at this moment on the medium density fiberboard face is by being subjected to the crosslinked adhesive effect that plays of polarization on thermal activation and the PVC film.Vacuum plastic-absorption is embodied in applied links process leading indicator: (1) bonding strength; (2) resistance to elevated temperatures; (3) profile pattern.
Be applied to the vacuum plastic-absorption of the bonding employing of PVC film and medium density fiberboard at present.The finished product temperature tolerance that single-component uses has only 65 ℃, product for some outlets, often need in the freight container of sealing, carry out seagoing transport, special transportation ship for need crossing the line circle, temperature in its freight container can reach 80~90 ℃, if the high temperature resistance of glue is not enough, just cause PVC decoration skin to come unglued easily and take off plate, make product rejection.Way in the past is to add 3~5% solidifying agent to improve thermotolerance in the process that glue uses, yet this has increased production process from the another one angle, has improved production cost, is unfavorable for being widely used.
For PVC decorating film and the bonding finished product of making of medium-density plate, only emphasize bonding strength and high thermal resistance requirement in early days, continuous development along with industry, especially the development of indoor paint-free door industry, more and more Duo producer also more payes attention to except the effect of the requirement of adhesiveproperties indoor paint-free being seen outdoors, because traditional operating procedure is in the mode that sprays glue to be sprayed on the medium density fiberboard, the surface tension of considering glue is big, the levelling effect is bad, form pit easily at the position of concentrating spray glue, produce " orange peel " phenomenon.After the PVC skin was adsorbed on the plate face, the outward appearance of film just mapped out the apparent state of glue-line, was the situation that pitted skin is also arranged on the PVC face, caused the finished product aesthetics to reduce greatly.The present invention introduces the technology of coating film forming levelling, reduce the surface tension of glue, when glue is sprayed on the medium density fiberboard plate face, can reduce and soak into the angle, reach fine levelling effect of impregnation may, make the glue-line smooth surface smooth, the PVC film covers the apparent effect in bonding back to be improved greatly, has improved the aesthetics of finished product.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, provide a kind of and have high cohesive force, high temperature resistance, saving cost and can satisfy the high-performance vacuum plastic-absorption of using required flat appearance simultaneously again.
The present invention is achieved through the following technical solutions, and high-performance vacuum plastic-absorption of the present invention comprises following component by weight percentage:
Ethene-vinyl acetate copolymer emulsion 30~50%;
Organic amine 0.05~0.5%;
Linking agent 1~10%;
Flow agent 0.1~0.5%;
Polyurethane thickener 0.05~0.5%;
Base-material: polyaminoester emulsion surplus.
Preferably, comprise following component by weight percentage:
Ethene-vinyl acetate copolymer emulsion 35~45%;
Organic amine 0.1~0.2%;
Linking agent 3~5%;
Flow agent 0.2~0.3%;
Polyurethane thickener 0.1~0.2%;
Base-material: polyaminoester emulsion surplus.
Preferably, described organic amine is selected from the water-based organic amine.
More preferably be that described water-based organic amine is selected from AMP95 organic amine, triethylamine, trolamine.
Preferably, described linking agent is selected from the organic titanate linking agent.
More preferably be that described organic titanate linking agent is selected from Tyzor-371 (commercially available, Dupont chemistry).
Preferably, described flow agent is selected from the organo-siloxane flow agent.
Preferably, described organo-siloxane flow agent is selected from BYK-301 (commercially available, Bi Ke chemistry).
Preferably, described polyurethane thickener is selected from PUR-40 (commercially available, German hamming this).
Production method of the present invention is: drop into material ethene-vinyl acetate copolymer emulsion and organic amine in stainless steel cauldron, stir 0.5-1hr, regulate about pH7.5, slowly splash into linking agent, in 0.5hr, finish adding of linking agent, add flow agent and polyaminoester emulsion then, stir 0.5-1hr, add polyurethane thickener and regulate viscosity, filter, packing.
The ethene-vinyl acetate emulsion has certain bonding activity to the PVC film, plays the effect of adhesion promotor in system, and reduces cost; Organic amine plays the effect of regulating the pH value, the ethene-vinyl acetate ph value of emulsion is adjusted to 7-8 mix with water-based organic titanate linking agent, and system pH can guarantee that the stabilized aqueous solution of organic titanate linking agent is deposited in the 7-8 scope; But the organic titanate aqueous solution at the pH=7-8 stable existence, is worked as temperature as the water-based system linking agent〉crosslinking reaction can take place in 100 ℃ or pH<6, improves glue-line greatly to the bonding strength of PVC film and medium density fiberboard and improve the thermotolerance of glued membrane; Polyaminoester emulsion is main bonding base-material in this formula system, because it has highly active urethano, the active gene on thermal activation process and wood surface and PVC surface easily produces and is cross-linked to form strong bonding force; Organo-siloxane class flow agent reduces the surface tension of glue, can reach levelling in the latex film forming process, and effect of impregnation may makes the glued membrane surfacing; Poly-propylhomoserin class thickening material plays the effect of adjusting glue viscosity.
The present invention introduces internal crosslinker, water-based organic titanate linking agent, and in regulating the pH=7-8 scope of product, the organic titanate linking agent is not reacted, can be stable coexist with system.Just react in the glue use, improve final product bonding force and thermotolerance, and the additional crosslink agent of traditional vacuum plastic-absorption, mostly be isocyanates, since isocyanato because of high reactivity, can only add in the use of glue, and the glue that is mixed into isocyanates must use up in the regular hour, otherwise can cause the dead glue of glue curing.Introduce organo-siloxane class flow agent simultaneously, improve the film-formation result of glue-line, make final finished product outward appearance more attractive in appearance.
The technology of the production control of crux is the adjusting of pH, vacuum plastic-absorption in the past adopts the easy volatile triethylamine to regulate the pH value, as time passes, cause pH to descend easily, and be the stability of maintenance internal crosslinker in the body series, and adopt organic amine, can guarantee that the pH of glue system is stable, simultaneously deposit the membrane process organic amine and can volatilize again and reduce pH, make the organic titanate crosslinked action reach best at glue.
But the glue long storage time among the present invention can reach the high temperature resistance more than 80 ℃, has not only reduced the cumbersome program of operation link, and reduces the usage quantity of solidifying agent, has saved production cost.
Embodiment
Below embodiments of the invention are elaborated: present embodiment has provided detailed embodiment being to implement under the prerequisite with the technical solution of the present invention, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
Present embodiment is implemented under following implementation condition and technical requirements condition:
Adopt 1 ton of stainless steel scuffing of cylinder bore, in scuffing of cylinder bore, drop into 45% ethene-vinyl acetate emulsion, adjust the high speed dispersor rotating speed, slowly splash into the 0.05%AMP95 organic amine, regulate ph value of emulsion about 7.5; Drip 1%Tyzor-371, stir and add 0.1% leveling auxiliary agent BYK-301 after 0.5-1.0 hour, stir and drop into 53.8% polyaminoester emulsion after 0.5 hour, add 0.05% thickening material PUR-401 then, after the adjustment viscosity is qualified, continue to stir 0.5-1.0 hour, detect the qualified after-filtration packing of index.
Compared with prior art, the product that this example obtained has good stability, and its cohesive force can reach 3.2Kg/cm, and the constant temperature heat resisting temperature has 85 ℃, and moment, heat resisting temperature was greater than 100 ℃; Reduce cost 15% with similar plastic uptake glue contrast.
Embodiment 2
Adopt 2 tons of stainless steel scuffings of cylinder bore, in scuffing of cylinder bore, drop into 46% ethene-vinyl acetate emulsion, open to stir and adjust the high speed dispersor rotating speed, slowly splash into the 0.09%AMP95 organic amine, regulate ph value of emulsion at 7.5-7.8; Drip 1% internal crosslinker Tyzor-371 in header tank, stir and drop into 52.7% polyaminoester emulsion more than 1.0 hours, stir after 0.5 hour, add 0.11% leveling auxiliary agent BYK-301 and 0.1% thickening material PUR-40 at last successively, continue to stir after 1.5-2.0 hour, detect the qualified after-filtration packing of index.
Compared with prior art, the product that this example obtained has good stability, and its cohesive force can reach 3.5Kg/cm, and the constant temperature heat resisting temperature has 85 ℃, and moment, heat resisting temperature was greater than 105 ℃; Reduce cost 10% with similar plastic uptake glue contrast.
Embodiment 3
Adopt 3 tons of enamel stirring tanks, at first drop into 50% ethene-vinyl acetate emulsion, open and stir, slowly splash into the 0.09%AMP95 organic amine, stir and adjust ph value of emulsion more than 1 hour about 7.5, splash into 1.21% internal crosslinker Tyzor-371, stir more than 1 hour, drop into 48.32% kilogram of polyaminoester emulsion, stir more than 0.5 hour, drop into 0.25% leveling auxiliary agent BYK-301 and 0.13% thickening material PUR-40 at last successively; Continue to stir 2 hours, detect the qualified after-filtration packing of index.
Compared with prior art, the product that this example obtained has good stability, and its cohesive force can reach 3.0Kg/cm, and the constant temperature heat resisting temperature has 85 ℃, moment heat resisting temperature be 105 ℃; Reduce cost 13% with similar plastic uptake glue contrast.
Embodiment 4
Present embodiment is implemented under following implementation condition and technical requirements condition:
Adopt 1 ton of stainless steel scuffing of cylinder bore, in scuffing of cylinder bore, drop into 30% ethene-vinyl acetate emulsion, adjust the high speed dispersor rotating speed, slowly splash into 0.5% triethylamine, regulate ph value of emulsion about 7.5; Drip 10%Tyzor-371, stir adding 0.5% leveling auxiliary agent BYK-301 after 0.5-1.0 hour, stir and drop into the surplus polyaminoester emulsion after 0.5 hour, add 0.5% thickening material PUR-401 then, after the adjustment viscosity is qualified, continue to stir 0.5-1.0 hour, detect the qualified after-filtration packing of index.
Compared with prior art, the product that this example obtained has good stability, and its cohesive force can reach 3.6Kg/cm, 85 ℃ of constant temperature heat resisting temperatures, moment 110 ℃ of heat resisting temperatures; Reduce cost 7% with similar plastic uptake glue contrast.
Embodiment 5
Present embodiment is implemented under following implementation condition and technical requirements condition:
Adopt 1 ton of stainless steel scuffing of cylinder bore, in scuffing of cylinder bore, drop into 35% ethene-vinyl acetate emulsion, adjust the high speed dispersor rotating speed, slowly splash into 0.1% trolamine, regulate ph value of emulsion about 7.5; Drip 3%Tyzor-371, stir adding 0.2% leveling auxiliary agent BYK-301 after 0.5-1.0 hour, stir and drop into the surplus polyaminoester emulsion after 0.5 hour, add 0.2% thickening material PUR-401 then, after the adjustment viscosity is qualified, continue to stir 0.5-1.0 hour, detect the qualified after-filtration packing of index.
Compared with prior art, the product that this example obtained has good stability, and its cohesive force can reach 3.4Kg/cm, and the constant temperature heat resisting temperature has 87 ℃, moment 105 ℃ of heat resisting temperatures; Reduce cost 10% with similar plastic uptake glue contrast.
Embodiment 6
Present embodiment is implemented under following implementation condition and technical requirements condition:
Adopt 1 ton of stainless steel scuffing of cylinder bore, in scuffing of cylinder bore, drop into 45% ethene-vinyl acetate emulsion, adjust the high speed dispersor rotating speed, slowly splash into the 0.2%AMP95 organic amine, regulate ph value of emulsion about 7.5; Dropwise 5 %Tyzor-371 stirs adding 0.3% leveling auxiliary agent BYK-301 after 0.5-1.0 hour, stirs and drops into the surplus polyaminoester emulsion after 0.5 hour, add 0.05% thickening material PUR-401 then, after the adjustment viscosity is qualified, continue to stir 0.5-1.0 hour, detect the qualified after-filtration packing of index.
Compared with prior art, the product that this example obtained has good stability, and its cohesive force can reach 3.5Kg/cm, and the constant temperature heat resisting temperature has 90 ℃, moment 110 ℃ of heat resisting temperatures; Reduce cost 15% with similar plastic uptake glue contrast.
The foregoing description only is used for that the present invention will be described, does not constitute the restriction to the claim scope, and other alternative means that it may occur to persons skilled in the art that are all in claim scope of the present invention.