CN114167697B - A blue toner with water vapor-induced color change performance and preparation method thereof - Google Patents
A blue toner with water vapor-induced color change performance and preparation method thereof Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 230000008859 change Effects 0.000 title claims description 10
- 239000000463 material Substances 0.000 claims abstract description 55
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 46
- AMFIJXSMYBKJQV-UHFFFAOYSA-L cobalt(2+);octadecanoate Chemical compound [Co+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AMFIJXSMYBKJQV-UHFFFAOYSA-L 0.000 claims abstract description 33
- UNASZPQZIFZUSI-UHFFFAOYSA-N methylidyneniobium Chemical compound [Nb]#C UNASZPQZIFZUSI-UHFFFAOYSA-N 0.000 claims abstract description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000835 fiber Substances 0.000 claims abstract description 24
- 229920000728 polyester Polymers 0.000 claims abstract description 24
- 239000001055 blue pigment Substances 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 239000002952 polymeric resin Substances 0.000 claims abstract description 23
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 23
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 22
- 229920001155 polypropylene Polymers 0.000 claims abstract description 21
- YARNEMCKJLFQHG-UHFFFAOYSA-N prop-1-ene;styrene Chemical group CC=C.C=CC1=CC=CC=C1 YARNEMCKJLFQHG-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims description 35
- 239000001993 wax Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 16
- 238000000227 grinding Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 238000004806 packaging method and process Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000007873 sieving Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 238000010902 jet-milling Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 150000001868 cobalt Chemical class 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 241001481833 Coryphaena hippurus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0802—Preparation methods
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0821—Developers with toner particles characterised by physical parameters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
本发明公开了一种具有水汽致变色性能的蓝色色调剂及其制备方法，具有水汽致变色性能的蓝色色调剂由以下组分的材料：苯乙烯丙烯聚合类树脂60～70份、聚酯纤维13～18份、蜡3～6份、蓝色颜料4～7份、电荷控制剂1～3份、气相二氧化硅1～3份、二氧化钛0.5～2份、MXene型碳化铌2～5份、硬脂酸钴3～6份；将上述物料进行预混合、混炼、冷却、粗粉碎、气流粉碎、球形化处理、外添加混合，最后进行过筛和包装制备出色调剂产品。本发明在色调剂中加入水汽致变色材料，配制成墨粉后，在不影响打印效果的同时使墨粉具有遇水发生颜色变化的性能。配置成打印墨粉后，打印机打印文字清晰，废粉量少，且可检测环境中的水汽致含量。The invention discloses a blue toner with water vapor color-changing performance and a preparation method thereof. The blue toner with water vapor color-changing performance is composed of the following components: 60-70 parts of styrene-propylene polymer resin, 13-18 parts of polyester fiber, 3-6 parts of wax, 4-7 parts of blue pigment, 1-3 parts of charge control agent, 1-3 parts of fumed silica, 0.5-2 parts of titanium dioxide, 2-5 parts of MXene type niobium carbide, and 3-6 parts of cobalt stearate; the above materials are pre-mixed, mixed, cooled, roughly crushed, air flow crushed, spheroidized, externally added and mixed, and finally sieved and packaged to prepare the toner product. The invention adds water vapor color-changing material to the toner, and after being prepared into toner, the toner has the performance of changing color when it comes into contact with water without affecting the printing effect. After being configured into printing toner, the printer prints clear text, the amount of waste toner is small, and the water vapor content in the environment can be detected.
Description
Technical Field
The invention relates to a blue toner with water vapor photochromic performance and a preparation method thereof, belonging to the technical field of developing toner.
Background
The toner is a powdery substance used for imaging and fixing on paper in a laser printer, and the toner product mainly needs to be bright and pure in color, and after the toner is configured to print, the particle size of the toner particles is uniformly distributed, the size is moderate and the shape is regular and uniform.
With the continuous improvement of printing technology, new toner having higher image density and fixing fastness and reduced amount of waste toner generated is a main material of toner. The toner of the prior art is affected in fixing firmness and changed in performance under the condition of high air humidity, and the toner of the prior art cannot detect the water content in the air, so that the toner is easy to damage and lose efficacy under the condition of high air humidity.
Disclosure of Invention
The invention aims to provide the blue toner with the water vapor photochromic property, which can effectively detect the water vapor content ratio in the air, promote the preservation space to keep a certain dryness, prolong the preservation time of articles and play an important role in economic benefit. Meanwhile, the invention also provides a preparation method of the toner.
The blue toner with the water vapor photochromic performance is prepared by mixing, by weight, 60-70 parts of styrene-propylene polymer resin, 13-18 parts of polyester fiber, 3-6 parts of wax, 4-7 parts of blue pigment, 1-3 parts of charge control agent, 1-3 parts of fumed silica, 0.5-2 parts of titanium dioxide, 2-5 parts of MXene type niobium carbide and 3-6 parts of cobalt stearate.
The preparation method of the blue toner with the water vapor photochromic property comprises the following steps of (1) preparing raw materials, namely weighing, by weight, 60-70 parts of styrene-propylene polymer resin, 13-18 parts of polyester fiber, 3-6 parts of wax, 4-7 parts of blue pigment, 1-3 parts of charge control agent, 1-3 parts of fumed silica, 0.5-2 parts of titanium dioxide, 2-5 parts of MXene type niobium carbide and 3-6 parts of cobalt stearate; the preparation method comprises the steps of (1) pre-mixing the materials of styrene propylene polymer resin, polyester fiber, wax, blue pigment, charge control agent, MXene type niobium carbide and cobalt stearate, mixing uniformly, mixing, cooling, rolling, cooling and crushing the mixed materials into sheet materials by a steel belt, coarse crushing, crushing the sheet materials in a coarse crusher, controlling the particle size of the crushed materials to be less than 1.5mm, jet milling, crushing the crushed materials in a jet mill to ensure that the particle size of the crushed materials is controlled to be 5-10 mu m, sphericizing, mixing the crushed materials subjected to the jet milling with a micro powder surface modification treatment, mixing the materials obtained in the step (7) with the weighed gas phase silicon dioxide and titanium dioxide, sieving and packaging, sieving the mixed materials obtained in the step (8), sieving the obtained mixed materials by a vibrating sieve, and packaging the obtained mixed materials according to the package specification.
The premixing in the step (2) is to mix by adopting a high-speed mixer, add materials into the mixer, firstly mix for 60s at low speed, then mix for 120s at high speed, stop for 60s, and repeat the above steps twice.
The external adding and mixing in the step (8) is to mix by adopting a high-speed mixer, add materials into the mixer, firstly mix for 60s at low speed, then mix for 120s at high speed, stop for 60s, and repeat the steps for two times.
The rotating speed of the high-speed mixer for low-speed mixing is 60-80 rpm, and the rotating speed of the high-speed mixer for high-speed mixing is 150-180 rpm.
In the step (9), the screen mesh of the sieving machine is 120 meshes.
The invention has the advantages that the complex of MXene type niobium carbide and cobalt stearate is adopted as innovation point, and the invention has the advantages that (1) the MXene layered structure has larger specific surface area, thus having good adsorption property, being beneficial to improving the adhesive force of the toner and paper and further improving the fixation firmness of the toner, (2) the MXene layered structure has smaller molar volume and good electric conductivity, and has excellent structural stability under the condition of additional strain and temperature, thus further improving the dispersibility, reducing the waste toner amount, ensuring that the melting temperature of the toner is uniform at high temperature, ensuring that the printing finished product of the toner has better image quality and long preservation time, ensuring that the fixation firmness can reach more than 97 percent, and (3) the cobalt stearate is a cobalt salt, generates color change after meeting water, further has water vapor electrochromic property and can detect the water content in air.
The invention adds the water vapor color change material into the toner to prepare the toner, and the toner has the property of color change when meeting water without affecting the printing effect. The blue toner prepared from the complex of cobalt stearate and MXene niobium carbide can obviously reflect the water vapor electrochromic effect, and is mainly characterized in that the MXene layered structure has a large specific surface area, so that the blue toner has good adsorption performance, cobalt stearate can be adsorbed in the MXene layered structure through physical and chemical interaction, so that the product performance is stable, the cobalt stearate is a common cobalt salt, can be changed into red from blue when meeting water, and is suitable for detecting the water content in air. The two materials are combined, so that the image density and the fixation firmness can be further improved, the waste powder amount is reduced, and the adhesive force and the glossiness of the toner are improved.
Drawings
FIG. 1 is the color and image effect and fixing fastness test results of examples 1-9 and comparative examples 1-3.
Detailed Description
The present invention will be more readily understood by reference to the following preferred embodiments of the invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood in the art to which this invention belongs, when there is a conflict, the present specification will control.
For example, the term "by..preparation" is synonymous with "comprising" as used herein. The use of "including," "comprising," "having," or any other variation thereof, herein is intended to cover a non-exclusive inclusion. For example, a composition, step, method, or apparatus comprising the listed elements is not limited to only those elements, but comprises other elements or inherent elements not expressly listed.
When an equivalent, concentration, or other value is expressed as a range, preferred range, or a range of upper and lower values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper and lower range limits or preferred values, regardless of whether ranges are separately disclosed. For example, when ranges "1 to 5" are disclosed, the described ranges should be understood to include ranges "1 to 4", "1 to 3", "1 to 2, and 4 to 5", and the like. When numerical ranges are described herein, unless otherwise stated, the ranges are intended to include the endpoints thereof and all integers and fractions within the range.
Furthermore, the indefinite articles "a" and "an" preceding an element or component of the invention are intended to be limited to the number of elements or components. Thus, the use of "a" and "an" should be interpreted as including one or at least one, and the singular reference of an element or component includes the plural reference unless the number clearly dictates otherwise.
The preparation method of the blue toner with the water vapor photochromic property comprises the following steps:
(1) The raw material preparation comprises, by weight, 60-70 parts of styrene-propylene polymer resin, 13-18 parts of polyester fiber, 3-6 parts of wax, 4-7 parts of blue pigment, 1-3 parts of charge control agent, 1-3 parts of fumed silica, 0.5-2 parts of titanium dioxide, 2-5 parts of MXene type niobium carbide and 3-6 parts of cobalt stearate;
(2) Mixing the weighed styrene propylene polymer resin, polyester fiber, wax, blue pigment, charge control agent, MXene type niobium carbide and cobalt stearate in a mixer, wherein the mixing is carried out uniformly by adopting a high-speed mixer, the materials are added into the mixer, the low-speed mixing is carried out for 60 seconds firstly, then the high-speed mixing is carried out for 120 seconds, the stop is carried out for 60 seconds, the steps are repeated for two times, the low-speed mixing speed of the high-speed mixer is 60-80 revolutions per minute, and the high-speed mixing speed is 150-180 revolutions per minute;
(3) Mixing, namely mixing the premixed materials through a continuous mixer;
(4) Cooling, namely rolling and cooling the mixed materials through a steel belt and crushing the mixed materials into sheet materials;
(5) Coarse crushing, namely putting the flaky materials into a coarse crusher to crush, wherein the particle size of the crushed materials is controlled within 1.5 mm;
(6) Jet milling, namely placing the coarsely milled materials into a jet mill for milling, and controlling the granularity of the materials to be 5-10 mu m;
(7) Sphericizing, namely performing surface sphericizing treatment on the material subjected to jet milling by a micro powder surface modification treatment machine;
(8) Mixing the material obtained in the step (7), the weighed fumed silica and the titanium dioxide in a mixer together, specifically adopting a high-speed mixer to mix, adding the material into the mixer, firstly mixing at a low speed for 60s, then mixing at a high speed for 120s, stopping for 60s, and repeating the steps for two times, wherein the rotating speed of the low-speed mixer for mixing at a high speed is 60-80 r/min, and the rotating speed of the high-speed mixer for mixing at a high speed is 150-180 r/min;
(9) Sieving and packaging, namely sieving the mixed material obtained in the step (8) by using a sieving machine, and packaging according to specifications, wherein the sieve of the sieving machine is 120 meshes.
The blue toner with the water vapor photochromic performance is prepared by mixing, by weight, 60-70 parts of styrene-acrylic polymer resin, 13-18 parts of polyester fiber, 3-6 parts of wax, 4-7 parts of blue pigment, 1-3 parts of charge control agent, 1-3 parts of fumed silica, 0.5-2 parts of titanium dioxide, 2-5 parts of MXene type niobium carbide and 3-6 parts of cobalt stearate.
The blue toner having the water vapor photochromic property of the present invention will be described below from specific examples, in which the manufacturer of styrene-acryl polymer resin is Guangzhou dolphin New Material Co., ltd., model H-941, the manufacturer of polyester fiber is Nanjing AC Chemicals Hill Co., ltd., model LURA high-strength polyester fiber, the manufacturer of wax is Nanjian Shi New Material technology Co., ltd., model D-103, the manufacturer of blue pigment is Henan Huameicheng pigment Co., ltd., model Bao blue La90-410, the manufacturer of charge control agent is Germany Kolaine chemical Co., ltd., the manufacturer of fumed silica is Hubei Hui Fu nanomaterial Co., ltd., model A-200, the manufacturer of titanium dioxide is Langfang Boma chemical Co., ltd., model R-298, the manufacturer of niobium carbide Mne is Guangxi Sanxin Metal chemical Co., ltd., model 12011-99-3, and the manufacturer of cobalt stearate is Shandong Xue Co., ltd., 1002-88-6. In the following examples, the ingredients are all in parts by weight.
Example 1
The components of the composition comprise 65 parts of styrene propylene polymer resin, 15 parts of polyester fiber, 5 parts of wax, 5 parts of blue pigment, 1 part of charge control agent, 2 parts of fumed silica, 1 part of titanium dioxide, 3 parts of niobium carbide MXene and 3 parts of cobalt stearate.
The materials are premixed, mixed, cooled, coarsely crushed, jet crushed, sphericized, externally added and mixed according to the preparation method, and finally sieved and packaged to prepare the toner product.
Example 2
The components of the composition comprise 65 parts of styrene propylene polymer resin, 15 parts of polyester fiber, 4 parts of wax, 5 parts of blue pigment, 2 parts of charge control agent, 1 part of fumed silica, 1 part of titanium dioxide, 3 parts of niobium carbide MXene and 4 parts of cobalt stearate.
The materials are premixed, mixed, cooled, coarsely crushed, jet crushed, sphericized, externally added and mixed according to the preparation method, and finally sieved and packaged to prepare the toner product.
Example 3
67 Parts of styrene propylene polymer resin, 13 parts of polyester fiber, 4 parts of wax, 5 parts of blue pigment, 1 part of charge control agent, 1 part of fumed silica, 1 part of titanium dioxide, 3 parts of niobium carbide MXene and 5 parts of cobalt stearate.
The materials are premixed, mixed, cooled, coarsely crushed, jet crushed, sphericized, externally added and mixed according to the preparation method, and finally sieved and packaged to prepare the toner product.
Example 4
The components of the composition comprise 66 parts of styrene propylene polymer resin, 13 parts of polyester fiber, 4 parts of wax, 5 parts of blue pigment, 1 part of charge control agent, 1 part of fumed silica, 1 part of titanium dioxide, 3 parts of niobium carbide MXene and 6 parts of cobalt stearate.
The materials are premixed, mixed, cooled, coarsely crushed, jet crushed, sphericized, externally added and mixed according to the preparation method, and finally sieved and packaged to prepare the toner product.
Example 5
The components of the composition comprise 65 parts of styrene propylene polymer resin, 16 parts of polyester fiber, 5 parts of wax, 5 parts of blue pigment, 1 part of charge control agent, 1 part of fumed silica, 1 part of titanium dioxide, 2 parts of niobium carbide MXene and 4 parts of cobalt stearate.
The materials are premixed, mixed, cooled, coarsely crushed, jet crushed, sphericized, externally added and mixed according to the preparation method, and finally sieved and packaged to prepare the toner product.
Example 6
The components of the composition are 63 parts of styrene propylene polymer resin, 14 parts of polyester fiber, 5 parts of wax, 5 parts of blue pigment, 3 parts of charge control agent, 1 part of fumed silica, 1 part of titanium dioxide, 4 parts of niobium carbide MXene and 4 parts of cobalt stearate.
The materials are premixed, mixed, cooled, coarsely crushed, jet crushed, sphericized, externally added and mixed according to the preparation method, and finally sieved and packaged to prepare the toner product.
Example 7
The components of the composition are 63 parts of styrene propylene polymer resin, 14 parts of polyester fiber, 4 parts of wax, 5 parts of blue pigment, 1 part of charge control agent, 3 parts of fumed silica, 1 part of titanium dioxide, 5 parts of niobium carbide MXene and 4 parts of cobalt stearate.
The materials are premixed, mixed, cooled, coarsely crushed, jet crushed, sphericized, externally added and mixed according to the preparation method, and finally sieved and packaged to prepare the toner product.
Example 8
The components of the composition include 60 portions of styrene propylene polymer resin, 18 portions of polyester fiber, 6 portions of wax, 7 portions of blue pigment, 2.5 portions of charge control agent, 1 portion of fumed silica, 0.5 portion of titanium dioxide, 2 portions of niobium carbide MXene and 3 portions of cobalt stearate.
Example 9
The components of the composition are 70 parts of styrene propylene polymer resin, 13 parts of polyester fiber, 3 parts of wax, 4 parts of blue pigment, 1 part of charge control agent, 2 parts of fumed silica, 2 parts of titanium dioxide, 2 parts of niobium carbide MXene and 3 parts of cobalt stearate.
Comparative example 1
The components of the composition include 68 parts of styrene propylene polymer resin, 17 parts of polyester fiber, 5 parts of wax, 5 parts of blue pigment, 2 parts of charge control agent, 2 parts of fumed silica and 1 part of titanium dioxide.
The preparation method comprises the steps of premixing, mixing, cooling, coarse crushing, jet milling, sphericizing, sieving and packaging to prepare the toner product.
Comparative example 2
67 Parts of styrene propylene polymer resin, 16 parts of polyester fiber, 5 parts of wax, 5 parts of blue pigment, 2 parts of charge control agent, 1 part of fumed silica, 1 part of titanium dioxide and 3 parts of niobium carbide MXene.
The preparation method comprises the steps of premixing, mixing, cooling, coarse grinding, jet milling, sphericizing, adding niobium carbide MXene, mixing, sieving and packaging to prepare the toner product.
Comparative example 3
The components of the composition comprise 66 parts of styrene propylene polymer resin, 16 parts of polyester fiber, 5 parts of wax, 5 parts of blue pigment, 2 parts of charge control agent, 1 part of fumed silica, 1 part of titanium dioxide and 4 parts of cobalt stearate.
The preparation method comprises the steps of premixing, mixing, cooling, coarse grinding, jet milling, sphericizing, adding cobalt stearate, mixing, sieving and packaging to prepare the toner product.
The blue toner with water vapor photochromic properties prepared in examples 1 to 9 and comparative examples 1 to 3 above were subjected to performance evaluation as follows:
1. Fixing firmness, namely copying the toner product onto a copy paper by using a copying machine to form a copy, cutting the copy into strips with the width of 2cm, measuring the density value of the strips by using a reflection densitometer, then placing a sample on an MC-1 friction tester for carrying out reciprocating friction twice, measuring the density value after friction, and calculating the fixing firmness according to the following formula:
fixing fastness = D Rear part (S) /D Front part x 100%
Wherein D Front part is a density value before rubbing, and D Rear part (S) is a density value after rubbing twice.
Comparing examples 1-9 with comparative examples 1-3, the comparative results are shown in the table of FIG. 1, and it can be analyzed from FIG. 1 that examples 1-9 improve the fixing fastness of the product to some extent and reduce the amount of waste powder after adding the cobalt stearate and MXene type niobium carbide complex.
2. And (3) generating water vapor for color change, namely copying the toner product onto a copy paper by using a copying machine to form a copy product, cutting the copy product into paper strips with the width of 2cm, placing a paper strip sample with the width of 2cm into water, standing for 10 seconds, observing that the color changes from blue to purple, taking out, airing in air, and changing the color of the paper into blue.
Comparing examples 1-9 with comparative examples 1-3, the product of examples 1-9 was used to detect humidity in the air because the product would change color in a more humid environment after the addition of the cobalt stearate and the MXene type niobium carbide complex.
3. Color and image effects:
The products prepared in examples 1-9 and comparative examples 1-3 were printed on a Hewlett-packard color laser printer and used in a 90% humidity environment with the color and image effects shown in the table of FIG. 1. The products of examples 1-9 are all superior to those of comparative examples 1-3.
The invention adds the water vapor color change material into the toner to prepare the toner, and the toner has the property of color change when meeting water without affecting the printing effect. The blue toner prepared from the complex of cobalt stearate and MXene niobium carbide can obviously reflect the water vapor electrochromic effect, and is mainly characterized in that the MXene layered structure has a large specific surface area, so that the blue toner has good adsorption performance, cobalt stearate can be adsorbed in the MXene layered structure through physical and chemical interaction, so that the product performance is stable, the cobalt stearate is a common cobalt salt, can be changed into red from blue when meeting water, and is suitable for detecting the water content in air. The two materials are combined, so that the image density and the fixation firmness can be further improved, the waste powder amount is reduced, and the adhesive force and the glossiness of the toner are improved.
The blue toner with water vapor color changing performance is one kind of reversible color toner with cobalt element in the material to change its color when it encounters water and with the water content increasing, the product changes from blue to purple gradually and with the water content decreasing, the color recovers.
The foregoing embodiments are merely illustrative of some of the features of the present invention. The appended claims are intended to claim the broadest possible scope as conceivable. It is, therefore, not the intention of the applicant that the appended claims be limited by the choice of examples illustrating the features of the invention. Some numerical ranges used in the claims also include sub-ranges within which variations in these ranges are also to be construed as being covered by the appended claims.
Claims (4)
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| CN115933338A (en) * | 2022-12-14 | 2023-04-07 | 南京新天兴影像科技有限公司 | Yellow developing toner with reversible photochromic property and preparation method thereof |
Citations (4)
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| CN111366615A (en) * | 2020-03-26 | 2020-07-03 | 电子科技大学 | Humidity sensor based on thin nano-flake MXene niobium carbide and preparation method thereof |
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| CN102621834B (en) * | 2012-03-28 | 2015-03-11 | 南京新天兴影像科技有限公司 | Yellow toner for color electrostatic development and preparation method thereof |
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| US5399609A (en) * | 1991-04-25 | 1995-03-21 | E. I. Du Pont De Nemours And Company | Moisture indicating molding resins |
| CN101401040A (en) * | 2006-03-03 | 2009-04-01 | 陶氏环球技术公司 | Aqueous dispersions for use as toners |
| CN102621833A (en) * | 2012-03-28 | 2012-08-01 | 南京新天兴影像科技有限公司 | Red toner for color electrostatic development and preparation method thereof |
| CN111366615A (en) * | 2020-03-26 | 2020-07-03 | 电子科技大学 | Humidity sensor based on thin nano-flake MXene niobium carbide and preparation method thereof |
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