CN104927744A - Adhesive for water-tolerant corrugated boards and preparing method thereof - Google Patents
Adhesive for water-tolerant corrugated boards and preparing method thereof Download PDFInfo
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- CN104927744A CN104927744A CN201510351715.6A CN201510351715A CN104927744A CN 104927744 A CN104927744 A CN 104927744A CN 201510351715 A CN201510351715 A CN 201510351715A CN 104927744 A CN104927744 A CN 104927744A
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Abstract
The invention provides single-component waterborne polyurethane adhesive and a preparing method thereof and relates to adhesive for water-tolerant corrugated boards and a preparing method thereof. The adhesive comprises, by weight, 100 parts of polyester polyol, 7.5 to 8.5 parts of emulsifier, 65 to 72 parts of diisocyanate, 0.3 to 0.5 part of tin catalyst, 21 to 23 parts of dihydric alcohol, 100 to 160 parts of acetone, 2.0 to 3.5 parts of sulfonate, 200 to 260 parts of deionized water, and 0.25 to 0.5 part of 2, 2-dimorpholinodiethylether. The single-component waterborne polyurethane adhesive special for adhering water-tolerant corrugated boards is made mainly with the polyester polyol, the emulsifier, the diisocyanate, the dibutyltin dilaurate and the dihydric alcohol by means of self-emulsifying; during, the adhesive volatilizes no substance, is highly adaptive to materials to be adhered, can cure at room temperature, needs no other cross-linking agents, is convenient to construct and is widely applicable to gluing and secondary processing of the corrugated boards.
Description
Technical field
The invention belongs to technical field of adhesive preparation, be specifically related to a kind of water tolerance corrugated cardboard and stick with glue agent and preparation method thereof.
Background technology
Along with the development of packaging industry, the consumption of tackiness agent remains higher level, whole world packaging industry glue consumption accounts for 35% of the total consumption of tackiness agent, packaging industry becomes the maximum industry of adhesive applications, the tackiness agent that current packaging industry uses, major part is dual-component polyurethane adhesive, needs to carry out scene allotment during use, can make troubles to production process, affect production efficiency; One-component polyurethane adhesive is then all solvent-based adhesive, has a large amount of volatile matter and produces, the inadequate environmental protection of production and application in production process; And for the water-based polyurethane adhesive of packaging field, along with the continuous lifting of packaging facilities level of automation and running speed, the curing speed of tackiness agent itself can not meet the processing requirement of existing production line; The current water-based polyurethane adhesive for wrapping material, due to not good by the wettability of bonding substrate surface, causes cohesive force not high, also limit its application in water tolerance bond for corrugated board equally.
Summary of the invention
Object of the present invention is exactly provide fast, the non-volatile thing of a kind of curing speed, single-component water-based polyurethane adhesive that cohesiveness is strong and preparation method thereof to overcome defect that above-mentioned prior art exists.
The technical scheme that the present invention takes: a kind of water tolerance corrugated cardboard sticks with glue agent, the mass ratio of its constitutive material is: polyester polyol: emulsifying agent: vulcabond: tin class catalyzer: dibasic alcohol: acetone: sulfonate: deionized water: 2,2-two beautiful jade Anaesthetie Ether=100:7.5 ~ 8.5:65 ~ 72:0.3 ~ 0.5:21 ~ 23:100 ~ 160:2.0 ~ 3.5:200 ~ 260:0.25 ~ 0.5.
The molecular weight control of described polyester polyol is 1000-3500.
Described emulsifying agent comprises at least one in dimethylol propionic acid, dimethylolpropionic acid, sodium laurylsulfonate, dioctyl succinic acid sodium sulfonate.
Described vulcabond comprises at least one in tolylene diisocyanate (TDI), isophorone diisocyanate (IPDI), 4,4-diphenylmethanediisocyanates (MDI), hexamethylene diisocyanate (HDI).
Described tin class catalyzer is dibutyl tin laurate.
Described dibasic alcohol comprises at least one in ethylene glycol, propylene glycol, glycol ether, BDO, terephthalic acid.
Described sulfonate comprises at least one in dialkyl benzene sulfonic acids sodium, sodium alkylarysulfonate, Sodium dodecylbenzene sulfonate, sodium butylnaphthalenesulfonate, sodium dibutyl naphthalene sulfonate.
Water tolerance corrugated cardboard sticks with glue a preparation method for agent, comprises the following steps:
(1) reactor is heated to 50-80 DEG C, is evacuated to negative pressure 0.05-0.18Pa, polyester polyol water dissolution is become the solution of concentration 45%-60%, and in suction reactor;
(2) open opening for feed, make to become normal pressure in still, add emulsifying agent, reaction times 10-20min;
(3) temperature of reaction kettle is raised to 80-95 DEG C, drip vulcabond and tin class catalyzer successively, vulcabond time for adding controls in 5-15 minute, and tin class catalyzer time for adding controls in 15-25 minute, motor speed controls at 50-120 rev/min, reaction 3-5.5 hour;
(4) reduce temperature of reaction kettle to 60 DEG C, add dibasic alcohol, reaction 1-2 hour;
(5) add acetone, react and add sulfonate after 30 minutes, control temperature of reaction kettle at 50-60 DEG C, insulation reaction 30-40min;
(6) in reactor, progressively add deionized water (per minute amount of water is no more than 12g), control reactor temperature at 40-55 DEG C, adjustment of rotational speed, to 300-400 rev/min, reacts 1-2 hour;
(7) raise temperature of reaction kettle to 65-85 DEG C, be evacuated to acetone and all exhaust;
(8) reduce temperature of reaction kettle to normal temperature, require to add 2 according to solidification rate, 2-two beautiful jade Anaesthetie Ethers, filter blowing after stirring, and obtain final water-based polyurethane adhesive.
The present invention adopts self-emulsification, utilize polyester polyol, emulsifying agent, vulcabond, dibutyl tin laurate, dibasic alcohol for main raw material synthesis be specifically designed to water-resisting type corrugated cardboard glued joint single-component water-based polyurethane adhesive, wherein dibasic alcohol add the effect not only playing chainextender but also the water tolerance that tackiness agent can be improved; Also improve initial bonding strength and initial adhesion strength by the amount controlling emulsifying agent in reaction, and add catalyzer 2,2-two beautiful jade Anaesthetie Ethers (DM-DEE) can significantly improve curing speed and the stability of tackiness agent; Acetone is added as solubility promoter in late phase reaction, namely facilitate heat transfer to be conducive to reducing reactant viscosity simultaneously, and in step (7), acetone is pumped, make tackiness agent not have volatile matter in use to produce, to strong by sticky adaptability for materials, namely curable at ambient temperature and do not need to use other linking agent, easy construction, comparatively can be widely used in gummed and the secondary processing of corrugated cardboard.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1:
(1) reactor is heated to 50 DEG C, be evacuated to negative pressure 0.05Pa, polyester polyol (molecular weight is 1000) is become the solution of concentration 45% by water dissolution, and in suction reactor, because polyester polyol has certain toxicity, and usual sealed storage, so adopt sealed negative-pressure to feed in raw material, ensure the security of operator;
(2) open opening for feed, make to become normal pressure in still, add dimethylol propionic acid and carry out emulsification, reaction 10min;
(3) temperature of reaction kettle to 80 DEG C is raised, drip tolylene diisocyanate (TDI) and dibutyl tin laurate successively, tolylene diisocyanate (TDI) time for adding is 5 minutes, dibutyl tin laurate time for adding is 15 minutes, motor speed controls at 50 revs/min, react 3 hours, the base polyurethane prepolymer for use as of the terminal isocyanate groups of preparation containing hydrophilic group;
(4) reduce temperature of reaction kettle to 60 DEG C, add ethylene glycol, react 1 hour, adding ethylene glycol is chainextender, increases molecular weight;
(5) add acetone, acetone is solubility promoter in the reaction, facilitates reactant internal heat transfer, is conducive to the adding of later stage the viscosity reducing tackiness agent; React and add dialkyl benzene sulfonic acids sodium after 30 minutes and carry out neutralize ions, namely make tackiness agent have water-soluble, control temperature of reaction kettle at 50 DEG C, insulation reaction 30min.
(6) in reactor, progressively add deionized water (per minute amount of water is no more than 12g), control inherent 40 DEG C of reactor, adjustment of rotational speed to 300 rev/min, reacts 1 hour, deionized water add comparatively ortho-water, obtained tackiness agent stability is higher;
(7) raise temperature of reaction kettle to 65 DEG C, be evacuated to acetone all exhaust make tackiness agent do not have in use volatile matter produce;
(8) reduce temperature of reaction kettle to normal temperature, add catalyzer 2,2-two beautiful jade Anaesthetie Ethers can significantly improve curing speed and the stability of tackiness agent, filter blowing after stirring, and obtain final water-based polyurethane adhesive.
The mass ratio of all raw materials is: polyester polyol: dimethylol propionic acid: tolylene diisocyanate (TDI): dibutyl tin laurate: ethylene glycol: acetone: dialkyl benzene sulfonic acids sodium: deionized water: 2,2-two beautiful jade Anaesthetie Ether=100:7.5:65:0.3:21:100:2.0:200:0.25.
The water-based polyurethane adhesive finally obtained, viscosity (being coated with-4 glasss/30 DEG C) 19 seconds, bonding force increases by 12% compared with solvent borne polyurethane sizing agent, and solid content reaches 52%, 18 minutes set times.
Embodiment 2:
(1) reactor is heated to 80 DEG C, be evacuated to negative pressure 0.18Pa, polyester polyol (molecular weight is 3500) is become the solution of concentration 60% by water dissolution, and in suction reactor, in polyester polyol, there is certain toxicity, and usual sealed storage, so adopt sealed negative-pressure to feed in raw material, ensure the security of operator;
(2) open opening for feed, make to become normal pressure in still, add dimethylolpropionic acid and carry out emulsification, reaction 20min;
(3) temperature of reaction kettle to 80 DEG C is raised, drip 4 successively, 4-diphenylmethanediisocyanate (MDI) and dibutyl tin laurate, 4,4-diphenylmethanediisocyanate (MDI) time for adding is 15 minutes, and dibutyl tin laurate time for adding is 25 minutes, motor speed controls at 120 revs/min, reacts 5.5 hours, the base polyurethane prepolymer for use as of the terminal isocyanate groups of preparation containing hydrophilic group;
(4) reduce temperature of reaction kettle to 60 DEG C, add propylene glycol, react 2 hours, adding propylene glycol is chainextender, increases molecular weight;
(5) add acetone, acetone is solubility promoter in the reaction, facilitates reactant internal heat transfer, is conducive to the adding of later stage the viscosity reducing tackiness agent; React and add Sodium dodecylbenzene sulfonate after 30 minutes and carry out neutralize ions, namely make tackiness agent have water-soluble, control temperature of reaction kettle at 60 DEG C, insulation reaction 40min.
(6) in reactor, progressively add deionized water (per minute amount of water is no more than 12g), control inherent 55 DEG C of reactor, adjustment of rotational speed to 400 rev/min, reacts 2 hours, deionized water add comparatively ortho-water, obtained tackiness agent stability is higher;
(7) raise temperature of reaction kettle to 85 DEG C, be evacuated to acetone all exhaust make tackiness agent do not have in use volatile matter produce;
(8) reduce temperature of reaction kettle to normal temperature, catalyzer 2,2-two beautiful jade Anaesthetie Ethers can significantly improve curing speed and the stability of tackiness agent, filter blowing after stirring, and obtain final water-based polyurethane adhesive.
The mass ratio of all raw materials is: polyester polyol: dimethylolpropionic acid: 4,4-diphenylmethanediisocyanate (MDI): dibutyl tin laurate: terephthalic acid: acetone: Sodium dodecylbenzene sulfonate: deionized water: 2,2-two beautiful jade Anaesthetie Ether=100:8.5:72:0.5:23:160:3.5:260:0.5.
The water-based polyurethane adhesive finally obtained, viscosity (being coated with-4 glasss/30 DEG C) 38 seconds, bonding force increases by 26% compared with solvent borne polyurethane sizing agent, and solid content reaches 58%, 9 minutes set times.
Embodiment 3:
(1) reactor is heated to 70 DEG C, be evacuated to negative pressure 0.09Pa, polyester polyol (molecular weight is 3000) is become the solution of concentration 55% by water dissolution, and in suction reactor, because polyester polyol has certain toxicity, and usual sealed storage, so adopt sealed negative-pressure to feed in raw material, ensure the security of operator;
(2) open opening for feed, make to become normal pressure in still, add dioctyl succinic acid sodium sulfonate and carry out emulsification, reaction 15min;
(3) temperature of reaction kettle to 87 DEG C is raised, drip isophorone diisocyanate (IPDI) and dibutyl tin laurate successively, isophorone diisocyanate (IPDI) time for adding is 10 minutes, dibutyl tin laurate time for adding is 20 minutes, motor speed controls at 80 revs/min, react 4.5 hours, the base polyurethane prepolymer for use as of the terminal isocyanate groups of preparation containing hydrophilic group;
(4) reduce temperature of reaction kettle to 60 DEG C, add BDO, react 1.5 hours, adding BDO is chainextender, increases molecular weight;
(5) add acetone, acetone is solubility promoter in the reaction, facilitates reactant internal heat transfer, is conducive to the adding of later stage the viscosity reducing tackiness agent; React and add sodium dibutyl naphthalene sulfonate after 30 minutes and carry out neutralize ions, namely make tackiness agent have water-soluble, control temperature of reaction kettle at 55 DEG C, insulation reaction 35min.
(6) in reactor, deionized water (per minute amount of water is no more than 12g) is progressively added, control inherent 45 DEG C of reactor, adjustment of rotational speed to 350 rev/min, reacts 1.5 hours, deionized water add comparatively ortho-water, obtained tackiness agent stability is higher;
(7) raise temperature of reaction kettle to 75 DEG C, be evacuated to acetone all exhaust make tackiness agent do not have in use volatile matter produce;
(8) reduce temperature of reaction kettle to normal temperature, add catalyzer 2,2-two beautiful jade Anaesthetie Ethers can significantly improve curing speed and the stability of tackiness agent, filter blowing after stirring, and obtain final water-based polyurethane adhesive.
The mass ratio of all raw materials is: polyester polyol: dioctyl succinic acid sodium sulfonate: isophorone diisocyanate (IPDI): dibutyl tin laurate: 1,4-butyleneglycol: acetone: sodium dibutyl naphthalene sulfonate: deionized water: 2,2-two beautiful jade Anaesthetie Ether=100:8:68:0.4:22:130:2.8:230:0.3.
The water-based polyurethane adhesive finally obtained, viscosity (being coated with-4 glasss/30 DEG C) 24 seconds, bonding force increases by 20% compared with solvent borne polyurethane sizing agent, and solid content reaches 55%, 12 minutes set times.
Claims (8)
1. a water tolerance corrugated cardboard sticks with glue agent, it is characterized in that the mass ratio of its constitutive material is: polyester polyol: emulsifying agent: vulcabond: tin class catalyzer: dibasic alcohol: acetone: sulfonate: deionized water: 2,2-two beautiful jade Anaesthetie Ether=100:7.5 ~ 8.5:65 ~ 72:0.3 ~ 0.5:21 ~ 23:100 ~ 160:2.0 ~ 3.5:200 ~ 260:0.25 ~ 0.5.
2. stick with glue agent according to the water tolerance corrugated cardboard described in claim 1, it is characterized in that, the molecular weight control of described polyester polyol is 1000-3500.
3. stick with glue agent according to the water tolerance corrugated cardboard described in claim 1, it is characterized in that, described emulsifying agent comprises at least one in dimethylol propionic acid, dimethylolpropionic acid, sodium laurylsulfonate, dioctyl succinic acid sodium sulfonate.
4. stick with glue agent according to the water tolerance corrugated cardboard described in claim 1, it is characterized in that, described vulcabond comprises at least one in tolylene diisocyanate TDI, isophorone diisocyanate IPDI, 4,4-diphenylmethanediisocyanate MDI, hexamethylene diisocyanate HDI.
5. stick with glue agent according to the water tolerance corrugated cardboard described in claim 1, it is characterized in that, described tin class catalyzer is dibutyl tin laurate.
6. stick with glue agent according to the water tolerance corrugated cardboard described in claim 1, it is characterized in that, described dibasic alcohol comprises at least one in ethylene glycol, propylene glycol, glycol ether, BDO.
7. stick with glue agent according to the water tolerance corrugated cardboard described in claim 1, it is characterized in that, described sulfonate comprises at least one in dialkyl benzene sulfonic acids sodium, sodium alkylarysulfonate, Sodium dodecylbenzene sulfonate, sodium butylnaphthalenesulfonate, sodium dibutyl naphthalene sulfonate.
8. water tolerance corrugated cardboard sticks with glue a preparation method for agent, it is characterized in that comprising the following steps:
(1) reactor is heated to 50-80 DEG C, is evacuated to negative pressure 0.05-0.18Pa, polyester polyol water dissolution is become the solution of concentration 45%-60%, and in suction reactor;
(2) open opening for feed, make to become normal pressure in still, add emulsifying agent, reaction times 10-20min;
(3) temperature of reaction kettle is raised to 80-95 DEG C, drip vulcabond and tin class catalyzer successively, vulcabond time for adding controls in 5-15 minute, and tin class catalyzer time for adding controls in 15-25 minute, motor speed controls at 50-120 rev/min, reaction 3-5.5 hour;
(4) reduce temperature of reaction kettle to 60 DEG C, add dibasic alcohol, reaction 1-2 hour;
(5) add acetone, react and add sulfonate after 30 minutes, control temperature of reaction kettle at 50-60 DEG C, insulation reaction 30-40min;
(6) progressively in reactor, add deionized water, per minute amount of water is no more than 12g, controls reactor temperature at 40-55 DEG C, and adjustment of rotational speed, to 300-400 rev/min, reacts 1-2 hour;
(7) raise temperature of reaction kettle to 65-85 DEG C, be evacuated to acetone and all exhaust;
(8) reduce temperature of reaction kettle to normal temperature, require to add 2 according to solidification rate, 2-two beautiful jade Anaesthetie Ethers, filter blowing after stirring, and obtain final water-based polyurethane adhesive.
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| CN201510351715.6A CN104927744B (en) | 2015-06-24 | 2015-06-24 | A kind of water resistance corrugated board adhesive and preparation method thereof |
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| CN201510351715.6A CN104927744B (en) | 2015-06-24 | 2015-06-24 | A kind of water resistance corrugated board adhesive and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108300403A (en) * | 2018-01-30 | 2018-07-20 | 陈良地 | The high-strength shockproof combined corrugated board of one kind and its preparation process |
| CN111484826A (en) * | 2020-03-16 | 2020-08-04 | 徐汉昇 | Single-component water polyurethane adhesive |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108300403A (en) * | 2018-01-30 | 2018-07-20 | 陈良地 | The high-strength shockproof combined corrugated board of one kind and its preparation process |
| CN111484826A (en) * | 2020-03-16 | 2020-08-04 | 徐汉昇 | Single-component water polyurethane adhesive |
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| CN104927744B (en) | 2017-10-27 |
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