CN105778621B - A kind of water-resistant type water-based polyurethane ink binder and preparation method thereof - Google Patents

A kind of water-resistant type water-based polyurethane ink binder and preparation method thereof Download PDF

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CN105778621B
CN105778621B CN201610326536.1A CN201610326536A CN105778621B CN 105778621 B CN105778621 B CN 105778621B CN 201610326536 A CN201610326536 A CN 201610326536A CN 105778621 B CN105778621 B CN 105778621B
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water
resistant type
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ink binder
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CN105778621A (en
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张�浩
辛长征
陈垒
仝瑞芳
李姝汶
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HERUI (ZHANGZHOU) AUXILIARY Co.,Ltd.
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Henan Institute of Engineering
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D11/00Inks
    • C09D11/02Printing inks
    • C09D11/10Printing inks based on artificial resins
    • C09D11/102Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08Processes
    • C08G18/10Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/64Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
    • C08G18/6484Polysaccharides and derivatives thereof
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D11/00Inks
    • C09D11/02Printing inks
    • C09D11/03Printing inks characterised by features other than the chemical nature of the binder

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  • Chemical Kinetics & Catalysis (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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  • Health & Medical Sciences (AREA)
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  • Polymers & Plastics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

The invention discloses a kind of water-resistant type water-based polyurethane ink binders and preparation method thereof, the main constituents of the ink adhesive are the bacteria cellulose and Waterborne Polyurethane Prepolymer by silane coupler modified processing, wherein the length of bacteria cellulose is 200 ~ 500nm, a diameter of 60 ~ 100nm;A kind of water-resistant type water-based polyurethane ink binder of the present invention and preparation method thereof takes following steps:Five stages such as the synthesis of the modification of hydrolysis, bacteria cellulose, the synthesis of Waterborne Polyurethane Prepolymer, aqueous polyurethane emulsion including silane coupling agent and the preparation of water-resistant type water-based polyurethane ink binder;A kind of water absorption rate for 24 hours of water-resistant type water-based polyurethane ink binder of the present invention is less than 8.0%;A kind of preparation method of water-resistant type water-based polyurethane ink binder of the present invention is simple, meets the environmental protection requirement of sustainable development.

Description

A kind of water-resistant type water-based polyurethane ink binder and preparation method thereof
Technical field
The invention belongs to high-molecular organic material preparing technical field, specifically, being to be related to one kind with bacteria cellulose With the water-resistant type water-based polyurethane ink binder and preparation method thereof based on the cross-linked structure of polyurethane molecular chain.
Background technology
The performance of water-based ink is directly influenced by binder, and the water-based ink binder of early stage is mainly by rosin and horse Come the resin of sour modification, poor-performing.Later, people started the copolymer of acrylate monomer and styrene being applied to water In property ink, although can have more prominent performance in glossiness, weatherability etc., the improvement of its water resistance is still Unobvious.
At present, the degree of cross linking for improving ink film, common approach are focused primarily upon about the research of water-based ink water resistance Including interior crosslinking, external crosslinking and inside and outside dual crosslinking, the compound of introducing crosslinked structure can be the tripolymer of diisocyanate, Trimethylolpropane etc. [Wang Haiqiao, Zhang Lin, He Lifan, Lee imitate the silane coupler modified acrylic emulsions used for water color ink of jade, New Chemical Materials, 2010,38;The synthesis of the clear TDI tripolymer modified aqueous polyurethane dispersoids of Xiang Bo, Li Shaomao, Zhai Jin With performance, Chinese leather, 2010,39;Jiang Hongquan, Song Zhanqian, Shang Shibin wait the castor oil modified polyether type aqueous polyurethane breasts of The performance of liquid, chemical industry progress, 2010,29;The cross-linking modified styrene-acrylic emulsions of Lian Kunpeng, Zhu Liyong, Liu Runlin, Zhao quintessence are aqueous Application in ink, Chinese adhesive, 2011,20].It is in addition, poly- by being connected to after the double bond of Polymerizable Emulsifier is opened The methods of on adduct molecule chain, can also stablize ink adhesive molecular chain structure, so as to improve the water resistance of ink film [preparation and application of the big of Zhang Song, Duan Yufeng, Zhang Shulan, Huo Yandong, Li Fangfang, Li Ya acrylic emulsions used for water color ink, packet Dress engineering, 2014,5;Liu Xu, China fir of getting a bit thin on top, Wu Jia, the conjunction of clock sheet and epoxy modified aqueous acrylic acid resins used for water color ink Into, Packaging Engineering, 2008,7;The preparation of Cao Li, Cao Xinxiang, Wang Zhengping, Hou Xiu plum water-based acrylic resins and its water solubility Research, bonding, 2006,5;Cai Dongyu, Xiang Shanglin, Chen Xianyi, text is using polyurethane polyacrylate lotion as binder The development of plastic gravure waterborne ink, Packaging Engineering, 2005,3].
Introducing crosslinked network structure can improve the water resistance of water-based ink in ink coating structure, but currently used for The compound for improving the ink substrate degree of cross linking is generally chemosynthesis product, can be consumed during preparation and use a large amount of Chemical reagent simultaneously generates volatile pollutant, is unfavorable for environmental protection and sustainable development.
Invention content
The technical problems to be solved by the invention are to be directed to the problem of water-based polyurethane ink binder water resistance is insufficient, are carried A kind of water-resistant type water-based polyurethane ink binder and preparation method thereof is supplied.The aqueous poly- ammonia of a kind of water-resistant type of the present invention Ester oil ink connecting material is centered on the bacteria cellulose Jing Guo silane coupler modified processing, is existed using types of attachment such as hydrogen bonds Water-based polyurethane ink binder inside configuration forms stable cross-linked structure, so as to make the aqueous polyurethane after film-forming oily 24 hours water absorption rates of ink connecting material are down to less than 8.0%.
In order to solve the above technical problems, the present invention uses following technical scheme:
A kind of water-resistant type water-based polyurethane ink binder, it is mixed by the component of following weight percentage:Water Property polyaminoester emulsion 50% ~ 55%, mass fraction be 12% ammonium hydroxide 5% ~ 15% and Sodium Polyacrylate 35% ~ 40%.
24 hours water absorption rates after the water-resistant type water-based polyurethane ink binder film-forming reach less than 8.0%.
The preparation method of the water-resistant type water-based polyurethane ink binder, includes the following steps:
(1)Ethanol-hydrogen chloride system is obtained with the pH value of hydrochloric acid adjusting absolute ethyl alcohol to 3 ~ 4 at normal temperatures, then by silane Coupling agent, which is added in ethanol-hydrogen chloride system, is hydrolyzed reaction, obtains the mixed solution of silanol and ethanol-hydrogen chloride, and hydrolysis is thorough The mark at bottom is mixed solution clear;
(2)Bacteria cellulose is added to step(1)Surface modification is carried out in mixed solution obtained, obtains modified bacteria Cellulose;
(3)Prepare Waterborne Polyurethane Prepolymer;
(4)By step(2)Modified bacteria cellulose obtained, step(3)Waterborne Polyurethane Prepolymer and chain extension obtained Agent in mass ratio 5 ~ 20:70~90:5 ~ 10 mixing and mechanical agitation obtains aqueous polyurethane emulsion at room temperature;
(5)By weight ratio by step(4)Aqueous polyurethane emulsion obtained, the ammonium hydroxide and poly- third that mass fraction is 12% Olefin(e) acid sodium is mixed and stirred for uniformly, water-resistant type water-based polyurethane ink binder being made.
The step(1)In, silane coupling agent is 3- methacryloxypropyl trimethoxy silanes or 3- (2,3- rings The third oxygen of oxygen) propyl trimethoxy silicane.
The step(1)In, the volume ratio of silane coupling agent and ethanol-hydrogen chloride system is 1:8~1:10, it is silane coupled The hydrolysis equation of agent is as follows:
In formula:X is methacryloxy or 2,3- glycidoxies.
The step(2)Middle bacteria cellulose grows 200 ~ 500nm, 60 ~ 100nm of diameter, and bacteria cellulose is molten with mixing Liquid is according to mass ratio 1:After 100 mixing, surface modification, reaction are carried out under conditions of 60 DEG C, mechanical agitation rotating speed is 60r/min Time is 2h, and reaction equation is as follows:
In formula:X is methacryloxy or 2,3- glycidoxy, and Y is bacteria cellulose.
The step(3)The preparation method of middle Waterborne Polyurethane Prepolymer is as follows:After polyalcohol is placed in conical flask It is put in 60 DEG C of water-bath, 80 DEG C is warming up to after being slowly added to diisocyanate, obtained after reaction 4h under conditions of 60r/min Obtain Waterborne Polyurethane Prepolymer;Wherein the mass ratio of polyalcohol and diisocyanate is 3:1~5:1.
The polyalcohol is polycarbonate glycol either polycaprolactone glycol or polyoxypropyleneglycol;Diisocyanate Ester is toluene di-isocyanate(TDI) either isophorone diisocyanate or Methylcyclohexyl diisocyanate.
The step(4)In chain extender be ethylenediamine, ethylene glycol, isophorone diamine or 1,4- butanediols.
The step(4)Middle mechanical agitation rotating speed is 120r/min, mixing time 20min.
The beneficial effects of the present invention are:(1) using bacteria cellulose, to prepare water-resistant type aqueous the present invention provides a kind of The effective way of polyurethane oil ink connecting material;(2) present invention is using bacteria cellulose and aqueous polyurethane strand, aqueous Stable cross-linked structure is formd in polyurethane oil ink connecting material matrix structure;(3) present invention is made using modified bacteria cellulose For additive, 24 hours water absorption rates of water-based polyurethane ink binder can be made to be down to less than 8.0%;(4) present invention is a kind of The preparation method of water-resistant type water-based polyurethane ink binder is easily combined with the prior art, it can be achieved that industrialized production;(5) originally It invents in a kind of preparation process of water-resistant type water-based polyurethane ink binder and is not related to toxicity additive, in printing process not There are the emission problems of organic pollution, are the advantageous starting materials for preparing environment-friendly type printing ink.
Specific embodiment
With reference to specific embodiment, the present invention will be further described.It should be understood that following embodiment is merely to illustrate this The range of invention and is not intended to limit the present invention, the person skilled in the art in the field can make one according to the content of foregoing invention A little nonessential modifications and adaptations.
Embodiment 1
A kind of preparation method of water-resistant type water-based polyurethane ink binder of the present embodiment is as follows:
(1) 200ml absolute ethyl alcohols are taken, it is 3 ~ 4 that hydrochloric acid is added dropwise thereto and adjusts to pH value, then measures 3- metering systems Acryloxypropylethoxysilane trimethoxy silane 25ml, which is added in ethanol-hydrogen chloride system, carries out the hydrolysis of 30min thoroughly to mixed solution Clear, room temperature stand for standby use;
(2) 1.0g bacteria celluloses are weighed and hydrolyze thorough silanol and the mixed solution of ethanol-hydrogen chloride system with 100.0g It is placed in conical flask, the Process of Surface Modification of bacteria cellulose needs 60 DEG C, reaction time 2h of reaction temperature, and mechanical agitation turns Speed is 60r/min, and will wash 3 times with absolute ethyl alcohol after bacteria cellulose vacuum filter after modified-reaction prepares modification Bacteria cellulose 1.06g;
(3) polycaprolactone glycol for weighing 12.0g is placed in the heating water bath of 60 DEG C of progress in conical flask, is slowly added dropwise Waterborne Polyurethane Prepolymer 15.5g is obtained after 80 DEG C of reaction 4h are warming up to after 4.0g toluene di-isocyanate(TDI)s;
(4) 1.0g modified bacteria celluloses, 14.0g Waterborne Polyurethane Prepolymers and 2.0g ethylene glycol are weighed and is placed in taper It is uniformly mixed in bottle, mechanical agitation rotating speed is 120r/min, mixing time 20min, and aqueous polyurethane emulsion 16.3g is made;
(5) 12.0g aqueous polyurethane emulsions, the ammonium hydroxide that 2.4g mass fractions are 12% and 9.6g Sodium Polyacrylates are put It is stirred evenly in conical flask, you can water-resistant type water-based polyurethane ink binder 23.6g is made.
It is taken out being soaked in distilled water after 15.0g water-resistant type water-based polyurethane ink binder curing dryings afterwards for 24 hours, 16.1g, water absorption rate 7.3% are weighed as after drying the moisture of its surface attachment.
Embodiment 2
A kind of preparation method of water-resistant type water-based polyurethane ink binder of the present embodiment is as follows:
(1) 300ml absolute ethyl alcohols are taken, it is 3 ~ 4 that hydrochloric acid is added dropwise thereto and adjusts to pH value, then measures 3- (2,3- epoxies Third oxygen) propyl trimethoxy silicane 34ml be added in above-mentioned ethanol-hydrogen chloride system carry out 30min hydrolysis it is thoroughly molten to mixing Liquid clear, room temperature stand for standby use;
(2) 2.0g bacteria celluloses are weighed and hydrolyze thorough silanol and the mixed solution of ethanol-hydrogen chloride system with 200.0g It is placed in conical flask, the Process of Surface Modification of bacteria cellulose needs 60 DEG C, reaction time 2h of reaction temperature, and mechanical agitation turns Speed is 60r/min, and will wash 3 times with absolute ethyl alcohol after bacteria cellulose vacuum filter after modified-reaction prepares modification Bacteria cellulose 2.05g;
(3) polycaprolactone glycol for weighing 15.0g is placed in the heating water bath of 60 DEG C of progress in conical flask, is slowly added dropwise Waterborne Polyurethane Prepolymer 17.2g is obtained after 80 DEG C of reaction 4h are warming up to after 3.0g isophorone diisocyanate;
(4) 2.0g modified bacteria celluloses, 15.0g Waterborne Polyurethane Prepolymers and 2.0g ethylene glycol are weighed and is placed in taper It is uniformly mixed in bottle, mechanical agitation rotating speed is 120r/min, mixing time 20min, and aqueous polyurethane emulsion 17.9g is made;
(5) by 15.0g aqueous polyurethane emulsions, the ammonium hydroxide that 4.5g mass fractions are 12% and 10.5g Sodium Polyacrylates It is placed in conical flask and stirs evenly, you can water-resistant type water-based polyurethane ink binder 28.7g is made.
It is taken out being soaked in distilled water after 20.0g water-resistant type water-based polyurethane ink binder curing dryings afterwards for 24 hours, 21.3g, water absorption rate 6.5% are weighed as after drying the moisture of its surface attachment.
Embodiment 3
A kind of preparation method of water-resistant type water-based polyurethane ink binder of the present embodiment is as follows:
(1) 200ml absolute ethyl alcohols are taken, it is 3 ~ 4 that hydrochloric acid is added dropwise thereto and adjusts to pH value, then measures 3- (2,3- epoxies Third oxygen) propyl trimethoxy silicane 20ml be added in above-mentioned ethanol-hydrogen chloride system carry out 30min hydrolysis it is thoroughly molten to mixing Liquid clear, room temperature stand for standby use;
(2) 1.5g bacteria celluloses are weighed and hydrolyze thorough silanol and the mixed solution of ethanol-hydrogen chloride system with 150.0g It is placed in conical flask, the Process of Surface Modification of bacteria cellulose needs 60 DEG C, reaction time 2h of reaction temperature, and mechanical agitation turns Speed is 60r/min, and will wash 3 times with absolute ethyl alcohol after bacteria cellulose vacuum filter after modified-reaction prepares modification Bacteria cellulose 1.49g;
(3) polyoxypropyleneglycol for weighing 16.0g is placed in the heating water bath of 60 DEG C of progress in conical flask, is slowly added dropwise Waterborne Polyurethane Prepolymer 19.1g is obtained after 80 DEG C of reaction 4h are warming up to after 4.0g Methylcyclohexyl diisocyanates;
(4) 1.2g modified bacteria celluloses, 6.4g Waterborne Polyurethane Prepolymers and 0.4g ethylene glycol are weighed and is placed in conical flask In be uniformly mixed, mechanical agitation rotating speed is 120r/min, mixing time 20min, and aqueous polyurethane emulsion 7.7g is made;
(5) 5.5g aqueous polyurethane emulsions, the ammonium hydroxide that 1.0g mass fractions are 12% and 3.5g Sodium Polyacrylates are put It is stirred evenly in conical flask, you can water-resistant type water-based polyurethane ink binder 9.2g is made.
It is taken out being soaked in distilled water after 5.0g water-resistant type water-based polyurethane ink binder curing dryings afterwards for 24 hours, 5.23g, water absorption rate 4.6% are weighed as after drying the moisture of its surface attachment.
Embodiment 4
A kind of preparation method of water-resistant type water-based polyurethane ink binder of the present embodiment is as follows:
(1) 300ml absolute ethyl alcohols are taken, it is 3 ~ 4 that hydrochloric acid is added dropwise thereto and adjusts to pH value, then measures 3- metering systems Acryloxypropylethoxysilane trimethoxy silane 32ml is added to the hydrolysis that 30min is carried out in above-mentioned ethanol-hydrogen chloride system thoroughly to mixing Solution clear, room temperature stand for standby use;
(2) 3.0g bacteria celluloses are weighed and hydrolyze thorough silanol and the mixed solution of ethanol-hydrogen chloride system with 300.0g It is placed in conical flask, the Process of Surface Modification of bacteria cellulose needs 60 DEG C, reaction time 2h of reaction temperature, and mechanical agitation turns Speed is 60r/min, and will wash 3 times with absolute ethyl alcohol after bacteria cellulose vacuum filter after modified-reaction prepares modification Bacteria cellulose 3.11g;
(3) the polycarbonate glycol for weighing 15.0g is placed in the heating water bath of 60 DEG C of progress in conical flask, is slowly added dropwise Waterborne Polyurethane Prepolymer 19.4g is obtained after 80 DEG C of reaction 4h are warming up to after 5.0g toluene di-isocyanate(TDI)s;
(4) 2.0g modified bacteria celluloses, 8.5g Waterborne Polyurethane Prepolymers and 1.0g ethylene glycol are weighed and is placed in conical flask In be uniformly mixed, mechanical agitation rotating speed is 120r/min, mixing time 20min, and aqueous polyurethane emulsion 10.8g is made;
(5) by 8.25g aqueous polyurethane emulsions, the ammonium hydroxide that 0.75g mass fractions are 12% and 6.0g Sodium Polyacrylates It is placed in conical flask and stirs evenly, you can water-resistant type water-based polyurethane ink binder 14.3g is made.
It is taken out being soaked in distilled water after 10.0g water-resistant type water-based polyurethane ink binder curing dryings afterwards for 24 hours, 10.31g, water absorption rate 3.1% are weighed as after drying the moisture of its surface attachment.
Basic principle of the invention and main feature and advantages of the present invention has been shown and described above.The skill of the industry Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and Its equivalent thereof.

Claims (9)

1. a kind of preparation method of water-resistant type water-based polyurethane ink binder, it is characterised in that include the following steps:
(1)Ethanol-hydrogen chloride system is obtained with the pH value of hydrochloric acid adjusting absolute ethyl alcohol to 3 ~ 4 at normal temperatures, it then will be silane coupled Agent, which is added in ethanol-hydrogen chloride system, is hydrolyzed reaction, obtains the mixed solution of silanol and ethanol-hydrogen chloride, and hydrolysis is thorough Indicate for mixed solution clear;
(2)Bacteria cellulose is added to step(1)Surface modification is carried out in mixed solution obtained, obtains modified bacteria fiber Element;
(3)Prepare Waterborne Polyurethane Prepolymer;
(4)By step(2)Modified bacteria cellulose obtained, step(3)Waterborne Polyurethane Prepolymer obtained is pressed with chain extender Mass ratio 5 ~ 20:70~90:5 ~ 10 mixing and mechanical agitation obtains aqueous polyurethane emulsion at room temperature;
(5)By weight ratio by step(4)Aqueous polyurethane emulsion obtained, the ammonium hydroxide and polyacrylic acid that mass fraction is 12% Sodium is mixed and stirred for uniformly, water-resistant type water-based polyurethane ink binder being made;
The water-resistant type water-based polyurethane ink binder is mixed by the component of following weight percentage:Aqueous poly- ammonia Ester lotion 50% ~ 55%, the ammonium hydroxide 5% ~ 15% that mass fraction is 12% and Sodium Polyacrylate 35% ~ 40%.
2. the preparation method of water-resistant type water-based polyurethane ink binder according to claim 1, it is characterised in that:It is described Water-resistant type water-based polyurethane ink binder film-forming after 24 hours water absorption rates reach less than 8.0%.
3. the preparation method of water-resistant type water-based polyurethane ink binder described in claim 1, it is characterised in that:The step (1)In, silane coupling agent is 3- methacryloxypropyl trimethoxy silanes or 3- (2,3- the third oxygen of epoxy) propyl front three Oxysilane.
4. the preparation method of water-resistant type water-based polyurethane ink binder described in claim 1, it is characterised in that:The step Suddenly(1)In, the volume ratio of silane coupling agent and ethanol-hydrogen chloride system is 1:8~1:10, the hydrolysis equation of silane coupling agent Formula is as follows:
In formula:X is methacryloxy or 2,3- glycidoxies.
5. the preparation method of water-resistant type water-based polyurethane ink binder according to claim 1, it is characterised in that:It is described The step of(2)Middle bacteria cellulose grows 200 ~ 500nm, 60 ~ 100nm of diameter, by bacteria cellulose and mixed solution according to quality Than 1:After 100 mixing, the progress surface modification under conditions of 60 DEG C, mechanical agitation rotating speed is 60r/min, reaction time 2h, Reaction equation is as follows:
In formula:X is methacryloxy or 2,3- glycidoxy, and Y is bacteria cellulose.
6. the preparation method of water-resistant type water-based polyurethane ink binder according to claim 1, it is characterised in that:It is described The step of(3)The preparation method of middle Waterborne Polyurethane Prepolymer is as follows:60 DEG C of water is put in after polyalcohol is placed in conical flask In bath, 80 DEG C are warming up to after being slowly added to diisocyanate, aqueous polyurethane is obtained after reaction 4h under conditions of 60r/min Performed polymer;Wherein the mass ratio of polyalcohol and diisocyanate is 3:1~5:1.
7. the preparation method of water-resistant type water-based polyurethane ink binder according to claim 6, it is characterised in that:It is described Polyalcohol be polycarbonate glycol, polycaprolactone glycol or polyoxypropyleneglycol;The diisocyanate is toluene two Isocyanates, isophorone diisocyanate or Methylcyclohexyl diisocyanate.
8. the preparation method of water-resistant type water-based polyurethane ink binder according to claim 1, it is characterised in that:It is described Step(4)In chain extender be ethylenediamine, ethylene glycol, isophorone diamine or 1,4- butanediols.
9. the preparation method of water-resistant type water-based polyurethane ink binder according to claim 1, it is characterised in that:It is described Step(4)Middle mechanical agitation rotating speed is 120r/min, mixing time 20min.
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CN108641577A (en) * 2018-05-25 2018-10-12 袁杰 A kind of bi-component anti-settling type polyurethane water-proof paint
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