CN110305577A - A kind of preparation method of folding aqueous transfer coating - Google Patents
A kind of preparation method of folding aqueous transfer coating Download PDFInfo
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- CN110305577A CN110305577A CN201910505908.0A CN201910505908A CN110305577A CN 110305577 A CN110305577 A CN 110305577A CN 201910505908 A CN201910505908 A CN 201910505908A CN 110305577 A CN110305577 A CN 110305577A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The present invention relates to technical field of paint preparation, and in particular to a kind of preparation method of folding aqueous transfer coating.Bacteria cellulose crushed material is made in the present invention first, then hydrochloric acid and sodium sulfite solution are used again, egg clearance response, aqueous polyurethane emulsion is made using polypropylene oxide polyetherdiol and isophorone diisocyanate as raw material again, by aqueous polyurethane emulsion and bacteria cellulose crushed material and albumen reaction product, crosslinking agent reaction, finally obtained folding aqueous transfer coating, the bacteria cellulose crushed material of addition, good barrier can be formed, coating toughness is improved 1~2 times on the original basis, the folding resistance of coating can be significantly improved, albumen has good foamability in coating, so that the mechanical strength of foam interface film increases, which thereby enhance the folding resistance of transfer coatings, it is more easier to extend in matrix surface, it has broad application prospects.
Description
Technical field
The present invention relates to technical field of paint preparation, and in particular to a kind of preparation method of folding aqueous transfer coating.
Background technique
Transfer coatings are widely used in tobacco package field, and the metallic silver effect of outer packing is realized to transfer aluminum plated layer
Fruit, another printing layer of accepting is to the function that shows fine printed patterns to realize anti-fake.Cigarette packet printing used currently on the market
The transfer coatings overwhelming majority is all oil paint, and oil paint is inflammable, explosive, electrostatic is big, smell weight, especially in production process
In, even if having well, ventilation and air exhausting device, operator still can suck a large amount of organic solvents, to the body of operator
It is totally unfavorable, do not meet the basic demand that modern industry develops to environmentally friendly direction.
With the enhancing of people's environmental consciousness, hot focus in the market to using water as main dispersing medium, have it is obvious
Come on the aqueous transfer coating direction of environment-friendly advantage.Aqueous transfer coating is excellent because having environmental protection, solvent-free volatilization and easy cleaning etc.
It puts and receives liking for people.Aqueous transfer coating is on existing market with polyurethane-type or a small amount of acrylic acid modified polyurethane
Based on type.However, with the gradually popularization that aqueous transfer coating is applied, disadvantage of the coating in printing application also gradually exposes
Out.Currently, the generally existing surface tension of aqueous transfer coating on the market is insufficient, fissility, high temperature resistance after film forming
Bad, transfer coated folding resistance is poor, and the disadvantages of easy moisture absorption.In addition, the coating requires greatly in higher baking oven thermal effect
It is lower just to show high temperature tolerance energy.But the baking oven of client is different, and has the baking oven thermal effect of the equipment of many clients up to not
To corresponding require that high-temperature resistant requirement cannot be reached.
Therefore it provides the splendid aqueous transfer coating and preparation method thereof of a kind of fissility, high temperature resistance, folding resistance
It is of great significance.
Summary of the invention
Present invention mainly solves the technical issues of, for the generally existing surface tension of aqueous transfer coating at present on the market
Greatly, it is not easy to extend in matrix surface, the poor defect of transfer coated folding resistance provides a kind of system of folding aqueous transfer coating
Preparation Method.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
The specific preparation step of folding aqueous transfer coating are as follows:
Weigh self-control aqueous polyurethane emulsion, bacteria cellulose crushed material, reaction product, deionized water, the mixing of poly- carbodiimide
After be put into reaction kettle, the revolving speed at 50~60 DEG C with 200~300r/min be stirred to react after 30~40min discharging to get
Folding aqueous transfer coating；
Make the preparation step of aqueous polyurethane emulsion by oneself are as follows:
(1) molecular weight is sequentially added for 1000 polypropylene oxide polyetherdiol and isophorone diisocyanate with stirring
In the three-necked flask of device and thermometer, under nitrogen atmosphere, after reacting 1~2h at 75~85 DEG C, mixed reactant is obtained, to it
45~55 DEG C are cooled to, then dihydromethyl propionic acid and 1,4-butanediol are added into flask, is warming up to 75~85 DEG C, reaction 60~
80min；
(2) it to after reaction, by reactant cooled to room temperature, then after being separately added into triethylamine and deionized water, moves into
Dispersion and emulsion handles 20~30min, and vacuum defoamation in vacuum homogeneous emulsifying machine, obtains self-control aqueous polyurethane emulsion；
The preparation step of bacteria cellulose crushed material are as follows:
(1) it glucose, peptone, yeast powder, disodium hydrogen phosphate, citric acid and distilled water is weighed is put into high temperature after mixing and go out
In bacterium tank, bacterial fermentation culture solution is obtained after the 10~15min that sterilizes at 120~125 DEG C；
(2) acetobacter xylinum is accessed in above-mentioned bacterial fermentation culture solution, stationary culture 7~9 days at 30~35 DEG C, wait cultivate knot
Shu Hou takes out the bacteria cellulose film of culture solution surface flotation with tweezers, after distilled water flushing 3~5 times, is put into tissue crushing
10~15min is crushed in machine, obtains bacteria cellulose crushed material；
The preparation step of reaction product are as follows:
Egg white is taken, by egg white and concentration be 0.1mol/L hydrochloric acid and concentration is after 0.5mol/L sodium sulfite solution mixes
It is put into sonic oscillation instrument, with frequency ultrasound 1~2h of oscillating reactions of 30~40kHz, obtains reaction product after reaction.
In the specific preparation step of folding aqueous transfer coating, according to parts by weight, self-control aqueous polyurethane emulsion is 30
~40 parts, bacteria cellulose crushed material be 5~10 parts, reaction product is 5~8 parts, deionized water is 60~70 parts, poly- carbon two is sub-
Amine is 1~2 part.
Make by oneself aqueous polyurethane emulsion preparation step (1) in, molecular weight be 1000 polypropylene oxide polyetherdiol and
The mass ratio of isophorone diisocyanate is 1:3.
In the preparation step (1) for making aqueous polyurethane emulsion by oneself, the additional amount of dihydromethyl propionic acid is that mixed reactant is total
The 5~6% of quality, the additional amount of 1,4-butanediol are the 8~9% of mixed reactant total volume.
In the preparation step (2) for making aqueous polyurethane emulsion by oneself, the additional amount of triethylamine is the 0.003 of reactant gross mass
~0.005%, the additional amount and reactant quality of deionized water are equal.
In the preparation step (1) of bacteria cellulose crushed material, according to parts by weight, glucose is 2~4 parts, peptone is
0.5~0.8 part, yeast powder be 0.5~0.8 part, disodium hydrogen phosphate is 0.2~0.4 part, citric acid is 0.1~0.3 part, distillation
Water is 90~95 parts.
In the preparation step (2) of bacteria cellulose crushed material, the inoculum concentration of acetobacter xylinum access bacterial fermentation culture solution is
10%。
In the preparation step of reaction product, egg white and concentration is 0.1mol/L hydrochloric acid and concentration is 0.5mol/L sulfurous
The mass ratio of acid sodium solution is 2:1:1.
The method have the benefit that:
(1) bacteria cellulose crushed material is prepared first by culture acetobacter xylinum in the present invention, then uses hydrochloric acid and sulfurous again
Acid sodium solution, egg clearance response, the disulfide bond in albumen is partially opened, and obtains albumen reaction product, then again
Aqueous polyurethane emulsion is made using polypropylene oxide polyetherdiol and isophorone diisocyanate as raw material, it finally will be aqueous poly-
Urethane lotion and bacteria cellulose crushed material and albumen reaction product, crosslinking agent are fitted into reaction kettle and react, final to make
Folding aqueous transfer coating is obtained, folding aqueous transfer coating produced by the present invention joined bacteria cellulose crushed material, due to thin
Fungin film addition after coating by when folding its own will form intersect train of thought split striated structure, once these " split
Line " generates, so that it may form good barrier, and bacterial cellulose film and the perfect matching space of vein, i.e., it is so-called
Exactly because " critical crack length ", the intersection vein interval almost Perfect on bacteria cellulose film just make bacterium fine them
The crackle on plain film is tieed up whenever reaching " critical crack length ", can be stopped in time, thus can be by coating toughness in original
On the basis of having improve 1~2 times, therefore by bacteria cellulose and aqueous polyurethane it is compound after, the resistance to of coating can be significantly improved
Folding endurance；
(2) present invention also joined albumen reaction product into transfer coatings, due in albumen disulfide bond quantity it is more,
It is flexible, have apparent amphipathic, therefore there is good foamability in coating, moreover, protein-colloid viscosity is higher,
Part peptide chain can stretch on gas-liquid interface, form a two dimension protection network, so that the mechanical strength of foam interface film increases,
The stability of foam can be improved, the pressure destruction caused when can be folded coating of these bubbles becomes smaller along with closed
Bubble plays the role of buffering, release, which thereby enhances the folding resistance of transfer coatings, at the same albumen have it is amphipathic, it
It is added so that transfer coatings surface tension of the present invention reduction, is more easier to extend in matrix surface, have broad application prospects.
Specific embodiment
According to parts by weight, weigh 2~4 parts of glucose, 0.5~0.8 part of peptone, 0.5~0.8 part of yeast powder, 0.2~
0.4 part of disodium hydrogen phosphate, 0.1~0.3 part of citric acid and 90~95 parts of distilled water are put into after mixing in high-temperature sterilization tank,
Bacterial fermentation culture solution is obtained after 10~15min of sterilizing at 120~125 DEG C；By inoculum concentration be 10% acetobacter xylinum accessed it is above-mentioned
In bacterial fermentation culture solution, culture solution surface is taken out with tweezers after cultivating in stationary culture 7~9 days at 30~35 DEG C
The bacteria cellulose film of floating is put into 10~15min of crushing in tissue pulverizer after distilled water flushing 3~5 times, obtains thin
Fungin crushed material, it is spare；Take egg white, in mass ratio for 2:1:1 by egg white and concentration be 0.1mol/L hydrochloric acid and
Concentration is to be put into sonic oscillation instrument after 0.5mol/L sodium sulfite solution mixes, anti-with the frequency ultrasound oscillation of 30~40kHz
1~2h is answered, obtains reaction product after reaction, it is spare；It is in mass ratio 1:3, the polypropylene oxide for being 1000 by molecular weight
Polyetherdiol and isophorone diisocyanate sequentially add in the three-necked flask with blender and thermometer, in nitrogen atmosphere
Under, after 75~85 DEG C of 1~2h of reaction, mixed reactant is obtained, is cooled to 45~55 DEG C to it, then mixing is added instead into flask
The dihydromethyl propionic acid of object gross mass 5~6% and the 1,4-butanediol of mixed reactant total volume 8~9% are answered, is warming up to 75~85
DEG C, react 60~80min；To after reaction, by reactant cooled to room temperature, then be separately added into reactant gross mass
After the deionized water of the quality such as 0.003~0.005% triethylamine and reactant, dispersion and emulsion in vacuum homogeneous emulsifying machine is moved into
20~30min, and vacuum defoamation are handled, self-control aqueous polyurethane emulsion is obtained；According to parts by weight, weigh 30~40 parts it is above-mentioned
Make aqueous polyurethane emulsion, 5~10 parts of spare bacteria cellulose crushed materials, 5~8 parts of spare reaction products, 60~70 by oneself
It is put into reaction kettle after part deionized water, 1~2 part of poly- carbodiimide mixing, is turned at 50~60 DEG C with 200~300r/min
Discharging is after speed is stirred to react 30~40min to get folding aqueous transfer coating.
Example 1
The preparation of bacterial fermentation culture solution:
According to parts by weight, 2 parts of glucose, 0.5 part of peptone, 0.5 part of yeast powder, 0.2 part of disodium hydrogen phosphate, 0.1 part are weighed
Citric acid and 90 parts of distilled water are put into after mixing in high-temperature sterilization tank, obtain bacterial fermentation after the 10min that sterilizes at 120 DEG C
Culture solution.
The preparation of bacteria cellulose crushed material:
Acetobacter xylinum is accessed in above-mentioned bacterial fermentation culture solution for 10% by inoculum concentration, stationary culture 7 days at 30 DEG C, wait train
After supporting, tissue powder is put into after distilled water flushing 3 times with the bacteria cellulose film that tweezers take out culture solution surface flotation
10min is crushed in broken machine, obtains bacteria cellulose crushed material, it is spare.
The preparation of reaction product:
It takes egg white, is in mass ratio 0.1mol/L hydrochloric acid by egg white and concentration for 2:1:1 and concentration is the Asia 0.5mol/L
It is put into sonic oscillation instrument after metabisulfite solution mixing, with the frequency ultrasound oscillating reactions 1h of 30kHz, obtains after reaction anti-
Product is answered, it is spare.
Make the preparation of aqueous polyurethane emulsion by oneself:
In mass ratio be 1:3, by molecular weight be 1000 polypropylene oxide polyetherdiol and isophorone diisocyanate successively
It is added in the three-necked flask with blender and thermometer, under nitrogen atmosphere, after 75 DEG C of reaction 1h, obtains mixed reactant,
45 DEG C are cooled to it, then the dihydromethyl propionic acid and mixed reactant totality of mixed reactant gross mass 5% are added into flask
The 1,4-butanediol of product 8% is warming up to 75 DEG C, reacts 60min；To after reaction, by reactant cooled to room temperature, then
After being separately added into the deionized waters of quality such as triethylamine and the reactant of reactant gross mass 0.003%, vacuum emulsifying is moved into
Dispersion and emulsion handles 20min, and vacuum defoamation in machine, obtains self-control aqueous polyurethane emulsion.
The preparation of folding aqueous transfer coating:
According to parts by weight, 30 parts of above-mentioned self-control aqueous polyurethane emulsions, 5 parts of spare bacteria cellulose crushed materials, 5 parts are weighed
It is put into reaction kettle after spare reaction product, 60 parts of deionized waters, 1 part of poly- carbodiimide mixing, with 200r/ at 50 DEG C
Discharging is after the revolving speed of min is stirred to react 30min to get folding aqueous transfer coating.
Example 2
The preparation of bacterial fermentation culture solution:
According to parts by weight, 3 parts of glucose, 0.7 part of peptone, 0.7 part of yeast powder, 0.3 part of disodium hydrogen phosphate, 0.2 part are weighed
Citric acid and 93 parts of distilled water are put into after mixing in high-temperature sterilization tank, obtain bacterial fermentation after the 13min that sterilizes at 123 DEG C
Culture solution.
The preparation of bacteria cellulose crushed material:
Acetobacter xylinum is accessed in above-mentioned bacterial fermentation culture solution for 10% by inoculum concentration, stationary culture 8 days at 33 DEG C, wait train
After supporting, tissue powder is put into after distilled water flushing 4 times with the bacteria cellulose film that tweezers take out culture solution surface flotation
13min is crushed in broken machine, obtains bacteria cellulose crushed material, it is spare.
The preparation of reaction product:
It takes egg white, is in mass ratio 0.1mol/L hydrochloric acid by egg white and concentration for 2:1:1 and concentration is the Asia 0.5mol/L
It is put into sonic oscillation instrument after metabisulfite solution mixing, with the frequency ultrasound oscillating reactions 1h of 35kHz, obtains after reaction anti-
Product is answered, it is spare.
Make the preparation of aqueous polyurethane emulsion by oneself:
In mass ratio be 1:3, by molecular weight be 1000 polypropylene oxide polyetherdiol and isophorone diisocyanate successively
It is added in the three-necked flask with blender and thermometer, under nitrogen atmosphere, after 80 DEG C of reaction 1h, obtains mixed reactant,
50 DEG C are cooled to it, then the dihydromethyl propionic acid and mixed reactant totality of mixed reactant gross mass 5% are added into flask
The 1,4-butanediol of product 8% is warming up to 80 DEG C, reacts 70min；To after reaction, by reactant cooled to room temperature, then
After being separately added into the deionized waters of quality such as triethylamine and the reactant of reactant gross mass 0.004%, vacuum emulsifying is moved into
Dispersion and emulsion handles 25min, and vacuum defoamation in machine, obtains self-control aqueous polyurethane emulsion.
The preparation of folding aqueous transfer coating:
According to parts by weight, 35 parts of above-mentioned self-control aqueous polyurethane emulsions, 7 parts of spare bacteria cellulose crushed materials, 6 parts are weighed
It is put into reaction kettle after spare reaction product, 65 parts of deionized waters, 1 part of poly- carbodiimide mixing, with 250r/ at 55 DEG C
Discharging is after the revolving speed of min is stirred to react 35min to get folding aqueous transfer coating.
Example 3
The preparation of bacterial fermentation culture solution:
According to parts by weight, 4 parts of glucose, 0.8 part of peptone, 0.8 part of yeast powder, 0.4 part of disodium hydrogen phosphate, 0.3 part are weighed
Citric acid and 95 parts of distilled water are put into after mixing in high-temperature sterilization tank, obtain bacterial fermentation after the 15min that sterilizes at 125 DEG C
Culture solution.
The preparation of bacteria cellulose crushed material:
Acetobacter xylinum is accessed in above-mentioned bacterial fermentation culture solution for 10% by inoculum concentration, stationary culture 9 days at 35 DEG C, wait train
After supporting, tissue powder is put into after distilled water flushing 5 times with the bacteria cellulose film that tweezers take out culture solution surface flotation
15min is crushed in broken machine, obtains bacteria cellulose crushed material, it is spare.
The preparation of reaction product:
It takes egg white, is in mass ratio 0.1mol/L hydrochloric acid by egg white and concentration for 2:1:1 and concentration is the Asia 0.5mol/L
It is put into sonic oscillation instrument after metabisulfite solution mixing, with the frequency ultrasound oscillating reactions 2h of 40kHz, obtains after reaction anti-
Product is answered, it is spare.
Make the preparation of aqueous polyurethane emulsion by oneself:
In mass ratio be 1:3, by molecular weight be 1000 polypropylene oxide polyetherdiol and isophorone diisocyanate successively
It is added in the three-necked flask with blender and thermometer, under nitrogen atmosphere, after 85 DEG C of reaction 2h, obtains mixed reactant,
55 DEG C are cooled to it, then the dihydromethyl propionic acid and mixed reactant totality of mixed reactant gross mass 6% are added into flask
The 1,4-butanediol of product 9% is warming up to 85 DEG C, reacts 80min；To after reaction, by reactant cooled to room temperature, then
After being separately added into the deionized waters of quality such as triethylamine and the reactant of reactant gross mass 0.005%, vacuum emulsifying is moved into
Dispersion and emulsion handles 30min, and vacuum defoamation in machine, obtains self-control aqueous polyurethane emulsion.
The preparation of folding aqueous transfer coating:
According to parts by weight, 40 parts of above-mentioned self-control aqueous polyurethane emulsions, 10 parts of spare bacteria cellulose crushed materials, 8 are weighed
It is put into reaction kettle after the spare reaction product of part, 70 parts of deionized waters, 2 parts of poly- carbodiimides mixing, with 300r/ at 60 DEG C
Discharging is after the revolving speed of min is stirred to react 40min to get folding aqueous transfer coating.
Comparative example 1: it is essentially identical with the preparation method of embodiment 1, it has only the difference is that bacteria cellulose crushing is not added
Object.
Comparative example 2: it is essentially identical with the preparation method of embodiment 2, it has only the difference is that reaction product is not added.
Comparative example 3: the transfer coatings of Shanghai City company production.
Transfer coatings in folding aqueous transfer coating produced by the present invention and comparative example are detected, testing result is such as
Shown in table 1:
Adhesive force test
It is measured according to JG/T24-2000 method, 0 grade preferably, and 1 grade is taken second place.
Stripping performance test
It is quickly removed using 3M adhesive tape along 45° angle direction, it is desirable that be stripped clean, no residue glue.
Heat-resisting quantity test
With heat-sealing instrument under the conditions of fixation pressure is 500kPa, the time is 1s, to the direct pressing of transfer paper, with the temperature before scorching
Maximum temperature as coatings withstood.
Buckle resistance test
By the transfer coatings in folding aqueous transfer coating produced by the present invention and comparative example, aluminized using the technique coating of roller coating
It is transferred on paper jam, folding folds the testing time for coating failure phenomenon occur according to positive and negative 180 DEG C back and forth.
Dissolvent residual VOCs test
By " measurement HS GC/Mass Spectrometry of dissolvent residual in YC/T207-2014 Cigarette paper ", dissolvent residual
The lower (including various impurity solvents) total amount the better.
1 performance measurement result of table
| Test item | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Levelling | Well | Well | It is outstanding | Well | Well | Well |
| Adhesive force | 0 grade | 0 grade | 0 grade | 2 grades | 1 grade | 1 grade |
| Stripping performance | Completely, no residue glue | Completely, no residue glue | Completely, no residue glue | Completely, no residue glue | It removes unclean | It removes unclean |
| The rate of transform (%) | 98.8 | 99.1 | 99.3 | 91.7 | 92.4 | 94.6 |
| Surface tension (gyn) | 55 | 57 | 60 | 53 | 48 | 50 |
| High temperature resistant (DEG C) | 168 | 170 | 174 | 142 | 137 | 153 |
| Buckle resistance (secondary) | 37 | 40 | 42 | 30 | 26 | 35 |
| VOCs(mg/m2) | 1.3 | 1.1 | 0.9 | 2.1 | 2.8 | 1.8 |
From the data in table 1, it can be seen that folding aqueous transfer coating produced by the present invention, there is good leveling property, removing to be easy, heatproof is high,
The features such as buckle resistance is good has no adverse effects to human body and environment, meets the environmental protection standard requirement of country and industry, has wide
Wealthy application prospect.
Claims (8)
1. a kind of preparation method of folding aqueous transfer coating, it is characterised in that specific preparation step are as follows:
Weigh self-control aqueous polyurethane emulsion, bacteria cellulose crushed material, reaction product, deionized water, the mixing of poly- carbodiimide
After be put into reaction kettle, the revolving speed at 50~60 DEG C with 200~300r/min be stirred to react after 30~40min discharging to get
Folding aqueous transfer coating；
The preparation step of the self-control aqueous polyurethane emulsion are as follows:
(1) molecular weight is sequentially added for 1000 polypropylene oxide polyetherdiol and isophorone diisocyanate with stirring
In the three-necked flask of device and thermometer, under nitrogen atmosphere, after reacting 1~2h at 75~85 DEG C, mixed reactant is obtained, to it
45~55 DEG C are cooled to, then dihydromethyl propionic acid and 1,4-butanediol are added into flask, is warming up to 75~85 DEG C, reaction 60~
80min；
(2) it to after reaction, by reactant cooled to room temperature, then after being separately added into triethylamine and deionized water, moves into
Dispersion and emulsion handles 20~30min, and vacuum defoamation in vacuum homogeneous emulsifying machine, obtains self-control aqueous polyurethane emulsion；
The preparation step of the bacteria cellulose crushed material are as follows:
(1) it glucose, peptone, yeast powder, disodium hydrogen phosphate, citric acid and distilled water is weighed is put into high temperature after mixing and go out
In bacterium tank, bacterial fermentation culture solution is obtained after the 10~15min that sterilizes at 120~125 DEG C；
(2) acetobacter xylinum is accessed in above-mentioned bacterial fermentation culture solution, stationary culture 7~9 days at 30~35 DEG C, wait cultivate knot
Shu Hou takes out the bacteria cellulose film of culture solution surface flotation with tweezers, after distilled water flushing 3~5 times, is put into tissue crushing
10~15min is crushed in machine, obtains bacteria cellulose crushed material；
The preparation step of the reaction product are as follows:
Egg white is taken, by egg white and concentration be 0.1mol/L hydrochloric acid and concentration is after 0.5mol/L sodium sulfite solution mixes
It is put into sonic oscillation instrument, with frequency ultrasound 1~2h of oscillating reactions of 30~40kHz, obtains reaction product after reaction.
2. a kind of preparation method of folding aqueous transfer coating according to claim 1, it is characterised in that: the folding water
Property transfer coatings specific preparation step in, according to parts by weight, self-control aqueous polyurethane emulsion be 30~40 parts, bacterial fibers
Plain crushed material is 5~10 parts, reaction product is 5~8 parts, deionized water is 60~70 parts, poly- carbodiimide is 1~2 part.
3. a kind of preparation method of folding aqueous transfer coating according to claim 1, it is characterised in that: the self-control water
Property polyaminoester emulsion preparation step (1) in, molecular weight be 1000 two isocyanide of polypropylene oxide polyetherdiol and isophorone
The mass ratio of acid esters is 1:3.
4. a kind of preparation method of folding aqueous transfer coating according to claim 1, it is characterised in that: the self-control water
Property polyaminoester emulsion preparation step (1) in, the additional amount of dihydromethyl propionic acid is the 5~6%, 1 of mixed reactant gross mass,
The additional amount of 4- butanediol is the 8~9% of mixed reactant total volume.
5. a kind of preparation method of folding aqueous transfer coating according to claim 1, it is characterised in that: the self-control water
Property polyaminoester emulsion preparation step (2) in, the additional amount of triethylamine is the 0.003~0.005% of reactant gross mass, go from
The additional amount and reactant quality of sub- water are equal.
6. a kind of preparation method of folding aqueous transfer coating according to claim 1, it is characterised in that: the bacterium is fine
In the preparation step (1) for tieing up plain crushed material, according to parts by weight, glucose is 2~4 parts, peptone is 0.5~0.8 part, yeast
Powder is 0.5~0.8 part, disodium hydrogen phosphate is 0.2~0.4 part, citric acid is 0.1~0.3 part, distilled water is 90~95 parts.
7. a kind of preparation method of folding aqueous transfer coating according to claim 1, it is characterised in that: the bacterium is fine
In the preparation step (2) for tieing up plain crushed material, the inoculum concentration that acetobacter xylinum accesses bacterial fermentation culture solution is 10%.
8. a kind of preparation method of folding aqueous transfer coating according to claim 1, it is characterised in that: the reaction produces
In the preparation step of object, egg white and concentration is 0.1mol/L hydrochloric acid and concentration is the quality of 0.5mol/L sodium sulfite solution
Than for 2:1:1.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060189234A1 (en) * | 2005-02-23 | 2006-08-24 | Jurgen Kocher | Polyurethane urea solutions |
| CN106087451A (en) * | 2016-08-25 | 2016-11-09 | 周荣 | A kind of preparation method of air previous polyurethane artificial leather |
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| CN107033765A (en) * | 2017-05-23 | 2017-08-11 | 山东奥德美高分子材料有限公司 | A kind of fire resistant water-based transfer coatings and preparation method thereof |
| CN107982089A (en) * | 2017-12-04 | 2018-05-04 | 上海应用技术大学 | A kind of preparation method of the bacterial cellulose facial mask with bacteriostasis efficacy |
| CN109400052A (en) * | 2018-10-29 | 2019-03-01 | 吴伟华 | A kind of preparation method of moisture-proof building mortar |
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2019
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|---|---|---|---|---|
| US20060189234A1 (en) * | 2005-02-23 | 2006-08-24 | Jurgen Kocher | Polyurethane urea solutions |
| CN106147451A (en) * | 2016-07-28 | 2016-11-23 | 上海乘鹰新材料有限公司 | Fire resistant water-based aluminizing transfer paint compositions and preparation method thereof |
| CN106087451A (en) * | 2016-08-25 | 2016-11-09 | 周荣 | A kind of preparation method of air previous polyurethane artificial leather |
| CN106752822A (en) * | 2016-12-13 | 2017-05-31 | 西安大天新材料有限公司 | A kind of aqueous high-temperature-resistant matt transferring aluminum-plating paint and preparation method thereof |
| CN107033765A (en) * | 2017-05-23 | 2017-08-11 | 山东奥德美高分子材料有限公司 | A kind of fire resistant water-based transfer coatings and preparation method thereof |
| CN107982089A (en) * | 2017-12-04 | 2018-05-04 | 上海应用技术大学 | A kind of preparation method of the bacterial cellulose facial mask with bacteriostasis efficacy |
| CN109400052A (en) * | 2018-10-29 | 2019-03-01 | 吴伟华 | A kind of preparation method of moisture-proof building mortar |
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