CN103788850A - Aqueous conductive double-component polyurethane rubber roller coating and preparation method thereof - Google Patents
Aqueous conductive double-component polyurethane rubber roller coating and preparation method thereof Download PDFInfo
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- CN103788850A CN103788850A CN201410008188.4A CN201410008188A CN103788850A CN 103788850 A CN103788850 A CN 103788850A CN 201410008188 A CN201410008188 A CN 201410008188A CN 103788850 A CN103788850 A CN 103788850A
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Abstract
The invention provides aqueous conductive double-component polyurethane rubber roller coating which consists of two components A and B with a mass ratio of (8-10): 1, wherein the molecular structure of the component A comprises the following materials in percentage by mass: 40-60 percent of oxhydryl-containing aqueous acrylic resin, 3-6 percentage of conductive carbon black powder, 2-5 percent of extinction powder, 1-4 percent of wax powder, 0.2-1 percent of a defoaming agent, 0.2-1 percent of a flatting agent, 0.2-2 percent of a wettable dispersing agent, 5-10 percent of a cosolvent and 20-40 percent of deionized water; the aqueous acrylic resin comprises 1.2-4 percent of oxhydryl by mass; the component B is an aliphatic polyisocyanate curing agent; and aliphatic polyisocyanate contains 10-15 percent of an isocyanate group by mass. The invention also provides a preparation method for the coating. The shortcoming that the conventional solvent type coating is high in VOC (volatile organic compound) content is overcome; novel aqueous coating which is suitable for a printer and is high in conductivity is supplied.
Description
technical field:
The present invention relates to a kind of conduction water-based double-component polyurethane coating for printer rubber roller and preparation method thereof, belong to technical field of coatings.
background technology:
For the coating on printer rubber roller surface, require the performance that has suitable frictional coefficient and all do not glue colour band under normal temperature, high temperature.At present, for the coating on printer rubber roller surface, be mainly solvent based coating, because solvent based coating contains a large amount of VOC(volatile organic matters) gas, serious environment pollution the very big physical and mental health that affects production operation personnel.This is just to having proposed in the industry to provide a kind of requirement of the Novel water-based paint with excellent conductive performance.
summary of the invention:
The present patent application is in order to overcome the high shortcoming of existing solvent based coating VOC content, provide a kind of surface to there is conduction and electrostatic-proof function, and all do not glue waterborne conductive two-component polyurethane adhesive roller coat material colour band, that be applicable to printer and preparation method thereof under normal temperature or certain high temperature.
An object of the present patent application is to provide above-mentioned purpose waterborne conductive two-component polyurethane adhesive roller coat material:
Specifically, two kinds of components of A, B that described waterborne conductive two-component polyurethane adhesive roller coat material is 8～10: 1 by mass ratio form,
1, in A component each composition to account for the quality percentage composition of A component as described below: the water-borne acrylic resin that contains hydroxyl in molecular structure: 40～60%, conductive carbon black powder: 3～6%, flatting silica: 2～5%, wax powder: 1～4%, defoamer: 0.2～1%, flow agent: 0.2～1%, Ricinate: 0.2～2%, solubility promoter: 5～10%, deionized water: 20～40, wherein, the hydroxy radical content in water-borne acrylic resin accounts for 1.2～4% of water-borne acrylic resin quality;
2, B component is aliphatic polymeric isocyanate solidifying agent, and wherein isocyanato content accounts for 10～15% of aliphatic polymeric isocyanate quality.
Further, described flatting silica is the synthetic gas aerosil particle through organic process.
Further, described wax powder is polyethylene wax.
Further, described defoamer is for containing organo-siloxane type defoamer.
Further, described flow agent comprises organopolysiloxane mixture, polyether-modified dimethyl-silicon alkyl copolymer or acrylic acid modified dimethyl polysiloxane multipolymer.
Further, described Ricinate is unsaturated polycarboxylic acid polymkeric substance, organosiloxane copolymer 5～8: 2 mixtures that mix in mass ratio.
Further, described solubility promoter comprises one or more mixture of propylene glycol monomethyl ether, butyl glycol ether, ethylene glycol monomethyl ether, methylene glycol methyl ether, glycol methyl ether acetate, diethylene glycol dimethyl ether, Diethylene Glycol butyl ether.
Another object of the present patent application is to provide the preparation method of above-mentioned waterborne conductive two-component polyurethane adhesive roller coat material:
Specifically, the preparation method of described waterborne conductive two-component polyurethane adhesive roller coat material comprises following step:
1, the preparation of A component comprises two processes:
1) the first process is for preparing black conductive mill base: according to the mass ratio of A component formula, 1/3 gauge water based acrylic resin is put in the middle of the container of appointment, add successively Ricinate, wax powder, 1/3 solubility promoter and deionized water and conductive carbon black powder, under the dispersion machine of 1000～1500rpm rotating speed, high speed dispersion 20～30min at the temperature of 18～25 ℃, then take out and insert horizontal sand mill grinding, during to fineness≤10 μ m, take out for subsequent use;
2) the second process is: according to the mass ratio of A component formula, and the black conductive mill base that adds remaining 2/3 water-borne acrylic resin, flatting silica, defoamer, flow agent and the first process to prepare in the container of specified requirement; Under the dispersion machine of 2000～2800rpm rotating speed, high speed dispersion 20～40min at the temperature of 18～25 ℃, until fineness≤10 μ m, then by dispersion machine reduction of speed to 800～1000rpm,, disperse after 10～20min, after sampling Detection is qualified than the solubility promoter and the deionized water that add remaining 2/3 according to A component prescription quality, with 250～300 eye mesh screens filtrations, metering packing;
2, the proportioning that A, B component are 8～10: 1 by quality mixes, and after slaking 10～20min, uses.
Waterborne conductive two-component polyurethane adhesive roller coat material described in the present patent application, the various compositions in its component all can be through commercially available acquisition:
Water-borne acrylic resin can adopt that Beyer Co., Ltd produces 2470,2427,145 etc., in the molecular structure of these water-borne acrylic resins, contain hydroxyl, hydroxy radical content between 1.2%～4% (wt%), isocyanato generation cross-linking and curing reaction that can be contained with B component.
The conductive carbon black powder that conductive carbon black powder can adopt Shenzhen Dong great Lai Chemical Co., Ltd. to produce.
Flatting silica adopts the synthetic gas aerosil particle through organic process, as: the ED50 of W. R. Grace & Co, the A200 of Degussa company etc.
Wax powder adopts polyethylene wax, as BYK-381, and the SST-3D of three leaf companies of the U.S. etc.
Defoamer adopts containing organo-siloxane type defoamer, as BYK011, the BYK019 of German Bi Ke chemical company, Tego802, the Tego825 of Di Gao company.
Flow agent adopts the one of organopolysiloxane mixture, polyether-modified dimethyl-silicon alkyl copolymer, acrylic acid modified dimethyl polysiloxane multipolymer etc., as BYK405, the BYK410 of German Bi Ke chemical company; As Tego450 of Di Gao company etc.
Ricinate is that the unsaturated polycarboxylic acid polymkeric substance of lower molecular weight adds organic silane copolymer, as the BYK151 of German Bi Ke chemical company, as Tego715, the Tego740 etc. of Di Gao company.
Solubility promoter comprises one or more the mixture in propylene glycol monomethyl ether, butyl glycol ether, ethylene glycol monomethyl ether, methylene glycol methyl ether, glycol methyl ether acetate, diethylene glycol dimethyl ether, Diethylene Glycol butyl ether.
B component is aliphatic polymeric isocyanate solidifying agent, and isocyanato content is 12～19.6%, can adopt as 305 of Bayer Bitterfeld GmbH chemical company, 2655.
The coating method of the coating described in the present patent application can adopt spraying, and coat-thickness is controlled at 5～10 μ m, can obtain good result.
Coating described in the present patent application, has following beneficial effect:
1, the VOC content of coating at 120g/L once;
2, rubber roll coatingsurface has the function of transmitting electric charge, can effectively reduce the gathering of static electric charge and the rising of electrostatic potential;
3, the frictional coefficient of rubber roll coating is 0.2～0.4, meets the requirement of printer rubber roller effects on surface frictional coefficient;
4, waterborne conductive two-component polyurethane adhesive roller coat material starting material wide material sources used, in liberal supply;
5, paint spay-coating is on the rubber roll of printer, and rubber roll is gone through 20,000 accelerated aging tests without extremely.
Embodiment
Below in conjunction with embodiment; waterborne conductive two-component polyurethane adhesive roller coat material described in the present patent application and preparation method thereof is described and is illustrated; object is better to understand described technology for the public; rather than restriction to described technology; the improvement of described coating and preparation method thereof being carried out in the principle with identical or approximate; comprise the replacement of similar component in formula, the increase and decrease of proportion; and the variation of preparation technology's conditional, all within the present patent application technical scheme required for protection.
Embodiment 1:
In the present embodiment, the formula of A component employing table 1 is prepared:
Table 1
| Component | Consumption (Kg) |
| Water-borne acrylic resin (Bayer 2470) | 54 |
| Graphitized carbon black powder | 6 |
| Flatting silica | 3 |
| Wax powder | 2 |
| Defoamer | 0.8 |
| Flow agent | 0.3 |
| Wetting dispersing agent | 0.5 |
| Propylene glycol monomethyl ether | 6 |
| Deionized water | 27.4 |
The consisting of of B component in the present embodiment: water-based isocyanate solidifying agent, select Bayer 305 resins.
Described in the present patent application, the preparation method of coating is as described below:
1, prepare in accordance with the following steps A component
The preparation of A component comprises two processes:
The first process: be to prepare black conductive mill base, according to the above-mentioned formula of A component, the water-borne acrylic resin of 18Kg (Bayer 2470) is put in the middle of the container of appointment, and (20 μ m) to add successively 0.5Kg Ricinate (BYK-151), 2Kg wax powder (SST-3D), 2Kg propylene glycol monomethyl ether, 10Kg deionized water and 6Kg conductive carbon black powder; Utilize homogenizer, under 1200rpm rotating speed, normal temperature (25 ℃) disperses 30min, then mixed slurry is taken out and inserts horizontal sand mill grinding, takes out for subsequent use during to fineness≤10 μ m;
The second process: according to the mass ratio of above-mentioned A component formula, the black conductive mill base that progressively adds remaining 36Kg water-borne acrylic resin (Bayer 2470), 3Kg flatting silica (ED-50), 0.8Kg defoamer (Tego825), 0.3Kg flow agent (BYK-410) and the first process to prepare in the container of specified requirement; Utilize homogenizer, under 2000rpm rotating speed, normal temperature (25 ℃) disperses 30min, until fineness≤10 μ m.Then the rotating speed of dispersion machine is dropped to 1000rpm, according to the mass ratio of above-mentioned A component formula, add remaining 4Kg propylene glycol monomethyl ether, 17.4Kg deionized water, disperse 15min, the viscosity that obtains product is 16 seconds (being coated with 4 glasss), and solid content is 34.8 ± 2%; After sampling Detection is qualified, with 300 eye mesh screens filtrations, metering packing.
2, A, the B component of preparation are above mixed to (being water-based isocyanate solidifying agent 10Kg) in mass ratio at 10: 1, be sprayed on the printer rubber roller of nitrile rubber making after slaking 15min, controlling coat-thickness is 10 ± 2 μ m, detects performance as shown in table 2.
Table 2 detects results of property
| Test item | Detected result | Detection method |
| The dried coating film time (80 ℃) | 30min | GB1728-79 |
| Film electric resistance | 6.1×10 4 | Favourable turn test |
| Sticking power (cross-hatching) | 0 grade | GB9286-1998 |
| Coating frictional coefficient | 0.3 | GB/T10006-1988 |
| Rubber roll ageing-resistant performance | 20000 senile experiments are without extremely | GB/T7762-2003 |
Embodiment 2:
In the present embodiment, the formula of A component employing table 3 is prepared:
Table 3
| Component | Consumption (Kg) |
| Water-borne acrylic resin (Bayer 2427) | 42 |
| Graphitized carbon black powder | 3 |
| Flatting silica | 5 |
| Wax powder | 4 |
| Defoamer | 0.2 |
| Flow agent | 0.8 |
| Wetting dispersing agent | 1.0 |
| Ethylene glycol monomethyl ether | 10 |
| Deionized water | 34 |
The consisting of of B component in the present embodiment: water-based isocyanate solidifying agent, select Bayer 2655 resins.
Described in the present patent application, the preparation method of coating is as described below:
1, prepare in accordance with the following steps A component
The preparation of A component comprises two processes:
The first process: be to prepare black conductive mill base, according to the above-mentioned formula of A component, the water-borne acrylic resin of 14Kg (Bayer 2427) is put in the middle of the container of appointment, and (20 μ m) to add successively 1.0Kg Ricinate (Tego715), 4Kg wax powder (BYK-381), 3Kg ethylene glycol monomethyl ether, 10Kg deionized water and 3Kg conductive carbon black powder; Utilize homogenizer, under 1200rpm rotating speed, normal temperature (25 ℃) disperses 30min, then mixed slurry is taken out and inserts horizontal sand mill grinding, takes out for subsequent use during to fineness≤10 μ m;
The second process: according to the mass ratio of above-mentioned A component formula, the black conductive mill base that progressively adds remaining 30Kg water-borne acrylic resin (Bayer 2470), 5Kg flatting silica (A200), 0.2Kg defoamer (BYK019), 0.8Kg flow agent (BYK405) and the first process to prepare in the container of specified requirement; Utilize homogenizer, under 2800rpm rotating speed, normal temperature (25 ℃) disperses 30min, until fineness≤10 μ m.Then the rotating speed of dispersion machine is dropped to 1000rpm, according to the mass ratio of above-mentioned A component formula, add remaining 7Kg ethylene glycol monomethyl ether, 24Kg deionized water, disperse 20min, the viscosity that obtains product is 14 seconds (being coated with 4 glasss), and solid content is 30.1 ± 2%; After sampling Detection is qualified, with 300 eye mesh screens filtrations, metering packing.
2, A, the B component of preparation are above mixed to (being water-based isocyanate solidifying agent 12.5Kg) in mass ratio at 8: 1, be sprayed on the printer rubber roller of nitrile rubber making after slaking 10min, controlling coat-thickness is 10 ± 2 μ m, detects performance as shown in table 4.
Table 4 detects results of property
| Test item | Detected result | Detection method |
| The dried coating film time (80 ℃) | 30min | GB1728-79 |
| Film electric resistance | 9.2×10 4 | Favourable turn test |
| Sticking power (cross-hatching) | 0 grade | GB9286-1998 |
| Coating frictional coefficient | 0.3 | GB/T10006-1988 |
| Rubber roll ageing-resistant performance | 20000 senile experiments are without extremely | GB/T7762-2003 |
Claims (8)
1. a waterborne conductive two-component polyurethane adhesive roller coat material, is characterized in that, two kinds of components of A, B that described coating is 8～10: 1 by mass ratio form, wherein,
It is as described below that in A component, each composition accounts for the quality percentage composition of A component: the water-borne acrylic resin that contains hydroxyl in molecular structure: 40～60%, conductive carbon black powder: 3～6%, flatting silica: 2～5%, wax powder: 1～4%, defoamer: 0.2～1%, flow agent: 0.2～1%, Ricinate: 0.2～2%, solubility promoter: 5～10%, deionized water: 20～40%, wherein, the hydroxy radical content in water-borne acrylic resin accounts for 1.2～4% of water-borne acrylic resin quality;
B component is aliphatic polymeric isocyanate solidifying agent, and wherein isocyanato content accounts for 10～15% of aliphatic polymeric isocyanate quality.
2. coating according to claim 1, is characterized in that, described flatting silica is the synthetic gas aerosil particle through organic process.
3. coating according to claim 1, is characterized in that, described wax powder is polyethylene wax.
4. coating according to claim 1, is characterized in that, described defoamer is for containing organo-siloxane type defoamer.
5. coating according to claim 1, is characterized in that, described flow agent is organopolysiloxane mixture, polyether-modified dimethyl-silicon alkyl copolymer or acrylic acid modified dimethyl polysiloxane multipolymer.
6. coating according to claim 1, is characterized in that, described Ricinate is unsaturated polycarboxylic acid polymkeric substance, organosiloxane copolymer 5～8: 2 mixtures that mix in mass ratio.
7. coating according to claim 1, it is characterized in that, described solubility promoter is one or more mixture of propylene glycol monomethyl ether, butyl glycol ether, ethylene glycol monomethyl ether, methylene glycol methyl ether, glycol methyl ether acetate, diethylene glycol dimethyl ether, Diethylene Glycol butyl ether.
8. a preparation method for waterborne conductive two-component polyurethane adhesive roller coat material, is characterized in that, comprises following step:
1) preparation of A component comprises two processes:
A) the first process is for preparing black conductive mill base: according to the mass ratio of A component formula, 1/3 gauge water based acrylic resin is put in the middle of the container of appointment, add successively Ricinate, wax powder, 1/3 solubility promoter and deionized water and conductive carbon black powder, under the dispersion machine of 1000～1500rpm rotating speed, high speed dispersion 20～30min at the temperature of 18～25 ℃, then take out and insert horizontal sand mill grinding, during to fineness≤10 μ m, take out for subsequent use;
B) the second process is: according to the mass ratio of A component formula, and the black conductive mill base that adds remaining 2/3 water-borne acrylic resin, flatting silica, defoamer, flow agent and the first process to prepare in the container of specified requirement; Under the dispersion machine of 2000～2800rpm rotating speed, high speed dispersion 20～40min at the temperature of 18～25 ℃, until fineness≤10 μ m, then by dispersion machine reduction of speed to 800～1000rpm,, disperse after 10～20min, after sampling Detection is qualified than the solubility promoter and the deionized water that add remaining 2/3 according to A component prescription quality, with 250～300 eye mesh screens filtrations, metering packing;
2) proportioning that A, B component are 8～10: 1 by quality mixes, and after slaking 10～20min, uses.
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| CN201410008188.4A CN103788850A (en) | 2014-01-08 | 2014-01-08 | Aqueous conductive double-component polyurethane rubber roller coating and preparation method thereof |
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| CN201410008188.4A CN103788850A (en) | 2014-01-08 | 2014-01-08 | Aqueous conductive double-component polyurethane rubber roller coating and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106085078A (en) * | 2016-06-30 | 2016-11-09 | 太仓市金新涂料有限公司 | A kind of Environmental-friendantistatic antistatic building coating and preparation method thereof |
| CN106433429A (en) * | 2016-08-16 | 2017-02-22 | 西安万祥新材料有限公司 | Electrostatic coating which can be sprayed to form thick film and construction method thereof |
| CN109535981A (en) * | 2018-11-28 | 2019-03-29 | 华东理工大学华昌聚合物有限公司 | A kind of aqueous polyurethane static conductive coating and preparation method thereof |
| CN109957310A (en) * | 2019-04-02 | 2019-07-02 | 清远市绚淳环保新材料有限公司 | A kind of laser printing transfer axis coating of aqueous zero VOC and preparation method thereof |
| CN112126303A (en) * | 2020-09-18 | 2020-12-25 | 东来涂料技术（上海）股份有限公司 | Conductive water-based white primer for plastic substrate and preparation method thereof |
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| CN103289547A (en) * | 2012-02-29 | 2013-09-11 | 深圳市明远氟涂料有限公司 | Conductive low-contamination rubber roller fluorocarbon coating and preparation method thereof |
| CN103740252A (en) * | 2013-12-17 | 2014-04-23 | 澳达树熊涂料(惠州)有限公司 | Antistatic waterborne polyurethane coating and preparation method thereof |
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| JP2004162052A (en) * | 2002-10-22 | 2004-06-10 | Osaka Gas Co Ltd | Electromagnetic wave-absorbing coating material composition, electromagnetic wave-absorbing housing and electromagnetic wave-absorbing film or sheet |
| CN102311703A (en) * | 2011-09-28 | 2012-01-11 | 常州大学 | Aqueous polypyrrole/attapulgite electrically-conducting paint and its preparation method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106085078A (en) * | 2016-06-30 | 2016-11-09 | 太仓市金新涂料有限公司 | A kind of Environmental-friendantistatic antistatic building coating and preparation method thereof |
| CN106433429A (en) * | 2016-08-16 | 2017-02-22 | 西安万祥新材料有限公司 | Electrostatic coating which can be sprayed to form thick film and construction method thereof |
| CN106433429B (en) * | 2016-08-16 | 2021-11-23 | 西安万祥新材料有限公司 | Electrostatic paint capable of being sprayed into thick film and construction method thereof |
| CN109535981A (en) * | 2018-11-28 | 2019-03-29 | 华东理工大学华昌聚合物有限公司 | A kind of aqueous polyurethane static conductive coating and preparation method thereof |
| CN109957310A (en) * | 2019-04-02 | 2019-07-02 | 清远市绚淳环保新材料有限公司 | A kind of laser printing transfer axis coating of aqueous zero VOC and preparation method thereof |
| CN112126303A (en) * | 2020-09-18 | 2020-12-25 | 东来涂料技术（上海）股份有限公司 | Conductive water-based white primer for plastic substrate and preparation method thereof |
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Application publication date: 20140514 |