CN114323855A - Sample preparation method for titanium dioxide papermaking application evaluation method - Google Patents
Sample preparation method for titanium dioxide papermaking application evaluation method Download PDFInfo
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- CN114323855A CN114323855A CN202111628738.9A CN202111628738A CN114323855A CN 114323855 A CN114323855 A CN 114323855A CN 202111628738 A CN202111628738 A CN 202111628738A CN 114323855 A CN114323855 A CN 114323855A
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- titanium dioxide
- evaluation method
- application evaluation
- sample preparation
- papermaking application
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 143
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 71
- 238000011156 evaluation Methods 0.000 title claims abstract description 39
- 238000005464 sample preparation method Methods 0.000 title claims abstract description 25
- 239000002002 slurry Substances 0.000 claims abstract description 37
- 235000021388 linseed oil Nutrition 0.000 claims abstract description 27
- 239000000944 linseed oil Substances 0.000 claims abstract description 27
- 238000000227 grinding Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000003892 spreading Methods 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 239000011521 glass Substances 0.000 claims description 17
- 238000005303 weighing Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims 11
- 239000000203 mixture Substances 0.000 claims 1
- 238000005070 sampling Methods 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000012512 characterization method Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 235000010215 titanium dioxide Nutrition 0.000 description 48
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000003153 chemical reaction reagent Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 239000000440 bentonite Substances 0.000 description 3
- 229910000278 bentonite Inorganic materials 0.000 description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000001038 titanium pigment Substances 0.000 description 2
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
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Abstract
The invention provides a sample preparation method for a titanium dioxide papermaking application evaluation method, which comprises the following steps: a) mixing titanium dioxide and refined linseed oil to obtain slurry; b) spreading the pulp obtained in the step a), and grinding to obtain sample pulp for the titanium dioxide papermaking application evaluation method. Compared with the prior art, the sample preparation method for the titanium dioxide papermaking application evaluation method only adopts two raw materials of titanium dioxide and refined linseed oil, has the advantages of simple sample preparation process, low labor intensity, short time consumption, high working efficiency, simplicity, high efficiency and strong practicability; and the resulting sample slurry was prepared. The method for evaluating the titanium dioxide papermaking application has the advantages of good repeatability and high reliability of the judgment result, has a consistent relation with the customer characterization trend, and has great significance for production guidance.
Description
Technical Field
The invention relates to the technical field of titanium dioxide, in particular to a sample preparation method for a titanium dioxide papermaking application evaluation method.
Background
Titanium dioxide (titanium dioxide) is an important inorganic chemical pigment, the main component of which is titanium dioxide, and the titanium dioxide has important application in industries such as paper making, paint, ink, paper making, plastic rubber, chemical fiber, ceramics and the like.
At present, reagents adopted by the existing titanium dioxide papermaking application evaluation method comprise seven kinds of desalted water, broad-leaf pulp board, bentonite, titanium dioxide, 0.5% sodium hydroxide, 5% wet strength agent and 10% aluminum sulfate, and the dosage of the reagents is 100g, 2g, 0.1g, 1.5g, 1.2ml, 2.3ml and 2ml respectively; the specific sample preparation method comprises the following steps: sequentially weighing reagent desalted water, broad-leaved pulp board, bentonite, titanium dioxide and 0.5% sodium hydroxide, placing in a soybean milk cup for pulping for 10 minutes in a time period, cooling, and transferring to a 1000ml measuring cup; then adding a reagent 5 percent of wet strength agent and stirring for 20 minutes by using a glass rod; injecting 4 liters of desalted water into a sheet making machine, adding a reagent 10 percent of aluminum sulfate, bubbling, premixing for 60 seconds, then adding the reagent desalted water, the broad-leaved pulp board, the bentonite, the titanium white and the 0.5 percent of sodium hydroxide prepared slurry, adding water to 7 liters of the slurry, bubbling for 60 seconds, standing for 5 minutes, draining water until the slurry is dried, staying for 30 seconds, and placing the paper sheet into the sheet making machine for 50 minutes at 98 ℃ for later use; and finally, after the sample is impregnated, pressing a plate and evaluating the covering and whiteness.
However, the sample preparation method has the disadvantages of complicated process, high labor intensity, long time consumption and low efficiency; and the gum dipping is not uniform (see figure 1), the repeated stability is poor, the error of the repeated result can reach 1.2 percent at most, and the reliability of the detection result is influenced.
Disclosure of Invention
In view of the above, the invention aims to provide a sample preparation method for a titanium dioxide papermaking application evaluation method, which has the advantages of simple process, low labor intensity, short time consumption and high working efficiency; and the repeatability stability is good, and the reliability of the detection result is high.
The invention provides a sample preparation method for a titanium dioxide papermaking application evaluation method, which comprises the following steps:
a) mixing titanium dioxide and refined linseed oil to obtain slurry;
b) spreading the pulp obtained in the step a), and grinding to obtain sample pulp for the titanium dioxide papermaking application evaluation method.
Preferably, the ratio of the titanium dioxide to the refined linseed oil in the step a) is that 0.1ml to 0.6ml of refined linseed oil is added to every 1g of titanium dioxide.
Preferably, the mixing process in step a) is specifically:
weighing titanium dioxide, placing on a lower glass plate cleaned by an automatic grinder, sucking refined linseed oil by a suction pipe, adding, and fully mixing to obtain a slurry.
Preferably, the titanium dioxide and the refined linseed oil are fully mixed by adopting a knife tip of a knife.
Preferably, the spreading process in step b) is specifically:
spreading the slurry obtained in the step a) into strips, and wiping the slurry adhered to the knife on the upper glass plate of the grinding machine.
Preferably, the width of the strip is 40mm to 60 mm.
Preferably, the paving position of the strip is from the edge of the lower glass plate to the middle of the center.
Preferably, the grinding force in step b) is 0.5KN to 1.5KN, the times are 3 times to 5 times, and each time is 40 revolutions to 60 revolutions.
Preferably, the grinding process in step b) further comprises:
after each grinding, the slurry on the two plates is collected together by a knife, and then the slurry is spread into strips with the width of 40 mm-60 mm, and the knife is smeared on the upper plate.
Preferably, after the grinding process in the step b) is finished, the pulp is taken from the plate and stored in a container, and the sample pulp for the evaluation method of the titanium dioxide papermaking application is obtained.
The invention provides a sample preparation method for a titanium dioxide papermaking application evaluation method, which comprises the following steps: a) mixing titanium dioxide and refined linseed oil to obtain slurry; b) spreading the pulp obtained in the step a), and grinding to obtain sample pulp for the titanium dioxide papermaking application evaluation method. Compared with the prior art, the sample preparation method for the titanium dioxide papermaking application evaluation method only adopts two raw materials of titanium dioxide and refined linseed oil, has the advantages of simple sample preparation process, low labor intensity, short time consumption, high working efficiency, simplicity, high efficiency and strong practicability; and the resulting sample slurry was prepared. The method for evaluating the titanium dioxide papermaking application has the advantages of good repeatability and high reliability of the judgment result, has a consistent relation with the customer characterization trend, and has great significance for production guidance.
Drawings
FIG. 1 is a schematic diagram of a sample preparation method for a titanium dioxide papermaking application evaluation method in the prior art, which shows uneven gum dipping.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a sample preparation method for a titanium dioxide papermaking application evaluation method, which comprises the following steps:
a) mixing titanium dioxide and refined linseed oil to obtain slurry;
b) spreading the pulp obtained in the step a), and grinding to obtain sample pulp for the titanium dioxide papermaking application evaluation method.
The invention firstly mixes the titanium pigment and the refined linseed oil to obtain the paste. The sources of the titanium pigment and the refined linseed oil are not particularly limited in the invention, and commercially available products well known to those skilled in the art can be adopted.
In the invention, the ratio of the titanium dioxide to the refined linseed oil is preferably 0.1ml to 0.6ml of the refined linseed oil added to 1g of the titanium dioxide, and more preferably 0.35ml of the refined linseed oil added to 1g of the titanium dioxide.
In the present invention, the mixing process preferably includes:
weighing titanium dioxide, placing on a lower glass plate cleaned by an automatic grinder, sucking refined linseed oil by a suction pipe, adding, and fully mixing to obtain a slurry.
In the invention, the titanium dioxide and the refined linseed oil are fully mixed by preferably adopting a knife tip of a knife.
In the present invention, the spreading process is preferably specifically:
spreading the slurry obtained in the step a) into strips, and wiping the slurry adhered to the knife on the upper glass plate of the grinding machine.
In the present invention, the width of the strip is preferably 40mm to 60mm, and more preferably 50 mm.
In the present invention, the strip is preferably laid at a position from the edge to the center of the lower glass sheet.
After the pulp is obtained, the obtained pulp is spread and ground to obtain the sample pulp for the titanium dioxide papermaking application evaluation method.
In the present invention, the grinding device may be an automatic grinder known to those skilled in the art. In the present invention, the force applied by the polishing is preferably 0.5KN to 1.5KN, more preferably 1 KN; the number of times of grinding is preferably 3 to 5 times, more preferably 4 times; each pass preferably takes from 40 to 60 revolutions, more preferably 50 revolutions.
In the present invention, the grinding process preferably further comprises:
after grinding once, collecting the pulp on the two plates together by using a knife, spreading the pulp into strips with the width of 40-60 mm, and smearing the knife on the upper plate;
more preferably:
after each grinding, the slurry on the two plates was collected together by a spatula, spread into a strip 50mm wide, and wiped clean on the upper plate by a spatula.
In the present invention, after the grinding process is completed, the slurry is preferably removed from the plate and stored in a container to obtain a sample slurry for the evaluation method of titanium dioxide paper making application.
Carrying out comparison test on the obtained sample pulp and pulp prepared by a standard sample by using a titanium dioxide papermaking application evaluation method; the determination method and the determination standard are not particularly limited, and those skilled in the art can use the determination method and the determination standard of the prior art.
By improving the sample preparation of the titanium dioxide papermaking application evaluation method, the invention solves the technical problems that (1) the sample preparation is complicated and takes longer time, (2) the gum dipping is not uniform, (3) the reproducibility is difficult to control, and (4) the methods of customer groups are uneven and cannot meet the requirements in the prior art, and has great significance for production guidance.
The invention provides a sample preparation method for a titanium dioxide papermaking application evaluation method, which comprises the following steps: a) mixing titanium dioxide and refined linseed oil to obtain slurry; b) spreading the pulp obtained in the step a), and grinding to obtain sample pulp for the titanium dioxide papermaking application evaluation method. Compared with the prior art, the sample preparation method for the titanium dioxide papermaking application evaluation method only adopts two raw materials of titanium dioxide and refined linseed oil, has the advantages of simple sample preparation process, low labor intensity, short time consumption, high working efficiency, simplicity, high efficiency and strong practicability; and the resulting sample slurry was prepared. The method for evaluating the titanium dioxide papermaking application has the advantages of good repeatability and high reliability of the judgment result, has a consistent relation with the customer characterization trend, and has great significance for production guidance.
To further illustrate the present invention, the following examples are provided for illustration. The titanium dioxide used in the following examples of the present invention was provided by Panzhihua Oriental titanium industries, Inc., and the refined linseed oil used was provided by Harbin Helizhijie Jing Shi, Inc., having a viscosity of 4 cups: 41s, acid value: 5.9mg KOH/g.
Examples
(1) Weighing 2g of titanium dioxide, placing on a lower glass plate cleaned by an automatic grinder, sucking 0.7mL of refined linseed oil by using a suction pipe, adding, and fully mixing the titanium dioxide and the refined linseed oil by using a knife tip of a knife so as to obtain slurry.
(2) Spreading the pulp obtained in the step (1) into a strip with the width of about 50mm, wherein the strip is approximately arranged in the middle from the edge to the center of a lower glass plate, smearing the pulp adhered to a knife on an upper glass plate of a grinding machine as much as possible, closing the grinding machine plate, applying the force of about 1KN to grind for 4 times in 50 revolutions, collecting the pulp on the two plates by the knife after grinding for each time, spreading into a strip with the width of 50mm, and smearing the knife on the upper plate; when the milling is complete, the slurry is removed from the plate and stored in a suitable container for use to obtain a sample slurry.
The same amount of the standard sample was additionally taken, and a standard slurry was prepared in the same manner.
And (3) performance testing:
(1) and (3) covering judgment:
spreading the sample slurry and the standard slurry prepared in the embodiment on a substrate in the same direction, preparing an opaque belt with the width of not less than 25mm and the side length of not less than 40mm by using a wet film preparation device, observing the surface of the opaque belt under scattered sunlight or a standard light source (the test adopts the standard light source) immediately after coating, forming a 90-degree angle between the sight line and the glass plate, and observing and evaluating the capability of the sample and a trademark standard sample for covering the substrate of the glass plate; if the two are consistent, the wet covering power of the evaluation sample is not lower than the commercial standard sample; and judging that the evaluation sample is lower or better than the trademark standard sample by the same method.
(2) And (3) whiteness judgment:
and (3) forming an included angle of 30 degrees between the glass plate after the covering power is evaluated by the performance test (1) and the sight line, adjusting the glass plate at the optimal observation position, and observing the whiteness difference between the evaluation sample and the trademark standard sample, wherein the result is expressed by that the sample is superior to, not lower than or inferior to the trademark standard sample.
The test results are shown in the following table.
TABLE 1 data for performance testing of sample slurries prepared in the examples
| Covering | Whiteness degree | |
| Examples | Is superior to | Not less than |
As can be seen from Table 1, the sample preparation method provided by the invention is simple, high-efficiency and strong in practicability, has good repeatability and high reliability of the judgment result, has a consistent relation with the characterization trend of the client, and has great significance for production guidance.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A sample preparation method for a titanium dioxide papermaking application evaluation method comprises the following steps:
a) mixing titanium dioxide and refined linseed oil to obtain slurry;
b) spreading the pulp obtained in the step a), and grinding to obtain sample pulp for the titanium dioxide papermaking application evaluation method.
2. The sampling method for the titanium dioxide powder papermaking application evaluation method according to claim 1, characterized in that the ratio of the titanium dioxide powder to the refined linseed oil in step a) is 0.1ml to 0.6ml of the refined linseed oil per 1g of the titanium dioxide powder.
3. The sample preparation method for the titanium dioxide papermaking application evaluation method according to claim 1, wherein the mixing process in the step a) is specifically as follows:
weighing titanium dioxide, placing on a lower glass plate cleaned by an automatic grinder, sucking refined linseed oil by a suction pipe, adding, and fully mixing to obtain a slurry.
4. The sample preparation method for the titanium dioxide powder papermaking application evaluation method according to claim 3, characterized in that the full mixing process adopts a knife tip of a knife to fully mix the titanium dioxide powder and the refined linseed oil.
5. The sample preparation method for the titanium dioxide papermaking application evaluation method according to claim 1, wherein the spreading process in the step b) is specifically:
spreading the slurry obtained in the step a) into strips, and wiping the slurry adhered to the knife on the upper glass plate of the grinding machine.
6. The sample preparation method for the titanium dioxide powder papermaking application evaluation method according to claim 5, wherein the width of the strip is 40mm to 60 mm.
7. The sample preparation method for the titanium dioxide powder papermaking application evaluation method according to claim 5, wherein the paving position of the strip is from the edge of the lower glass plate to the middle of the center.
8. The sample preparation method for the titanium dioxide powder papermaking application evaluation method according to claim 1, wherein the grinding force in step b) is 0.5KN to 1.5KN for 3 to 5 times, and each time is 40 to 60 revolutions.
9. The sample preparation method for the titanium dioxide powder papermaking application evaluation method according to claim 1, wherein the grinding process in step b) further comprises:
after each grinding, the slurry on the two plates is collected together by a knife, and then the slurry is spread into strips with the width of 40 mm-60 mm, and the knife is smeared on the upper plate.
10. The sample preparation method for the titanium dioxide powder papermaking application evaluation method according to claim 1, wherein after the grinding process in the step b) is finished, the slurry is taken from the plate and stored in a container to obtain the sample slurry for the titanium dioxide powder papermaking application evaluation method.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111628738.9A CN114323855A (en) | 2021-12-28 | 2021-12-28 | Sample preparation method for titanium dioxide papermaking application evaluation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111628738.9A CN114323855A (en) | 2021-12-28 | 2021-12-28 | Sample preparation method for titanium dioxide papermaking application evaluation method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB540905A (en) * | 1938-12-22 | 1941-11-05 | Nuodex Products Co Inc | Improvements in and relating to the making of pigment pastes |
| CN102507505A (en) * | 2011-11-10 | 2012-06-20 | 攀枝花鼎星钛业有限公司 | Determination method for covering power of titanium dioxide |
| CN103063560A (en) * | 2012-12-29 | 2013-04-24 | 锦州钛业有限公司 | Method for detecting UV (ultraviolet) light stability of special titanium dioxide for paper making |
| CN106644956A (en) * | 2016-11-02 | 2017-05-10 | 攀钢集团钛业有限责任公司 | Detection method for conventional whiteness of titanium dioxide |
| CN113533137A (en) * | 2021-06-29 | 2021-10-22 | 龙佰四川钛业有限公司 | Method for testing oil absorption of titanium dioxide |
-
2021
- 2021-12-28 CN CN202111628738.9A patent/CN114323855A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB540905A (en) * | 1938-12-22 | 1941-11-05 | Nuodex Products Co Inc | Improvements in and relating to the making of pigment pastes |
| CN102507505A (en) * | 2011-11-10 | 2012-06-20 | 攀枝花鼎星钛业有限公司 | Determination method for covering power of titanium dioxide |
| CN103063560A (en) * | 2012-12-29 | 2013-04-24 | 锦州钛业有限公司 | Method for detecting UV (ultraviolet) light stability of special titanium dioxide for paper making |
| CN106644956A (en) * | 2016-11-02 | 2017-05-10 | 攀钢集团钛业有限责任公司 | Detection method for conventional whiteness of titanium dioxide |
| CN113533137A (en) * | 2021-06-29 | 2021-10-22 | 龙佰四川钛业有限公司 | Method for testing oil absorption of titanium dioxide |
Non-Patent Citations (1)
| Title |
|---|
| 顾爱芳 等: "颜料颜色的比较", 中华人民共和国国家标准 颜料颜色的比较GB/T1864-1989, pages 6 * |
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