CN106644956A - Detection method for conventional whiteness of titanium dioxide - Google Patents
Detection method for conventional whiteness of titanium dioxide Download PDFInfo
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- CN106644956A CN106644956A CN201610944171.9A CN201610944171A CN106644956A CN 106644956 A CN106644956 A CN 106644956A CN 201610944171 A CN201610944171 A CN 201610944171A CN 106644956 A CN106644956 A CN 106644956A
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- titanium dioxide
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention belongs to the technical field of application and detection of titanium dioxide, and particularly relates to a detection method for conventional whiteness of titanium dioxide, which aims at providing a detection method for the conventional whiteness of the titanium dioxide. The detection method comprises the following steps of taking the titanium dioxide and linseed oil, and preparing into a paste matter; putting the paste matter on a PP (polypropylene) film, and forming a film; putting one other PP film on the prepared film; using a standard white board as a background, and detecting by a spectrocolorimeter. The detection method has the advantages that the conventional whiteness of the titanium dioxide can be visually detected; compared with the existing visual detection method, the accuracy is higher.
Description
Technical field
The invention belongs to titanium dioxide application detection field, and in particular to a kind of detection method of titanium dioxide routine whiteness.
Background technology
Titanium dioxide is a kind of white inorganic pigment, stable chemical nature, it is considered to be the one of better performances in the world at present
Kind of Chinese white, with heat endurance it is good, hardness is high, high opacity, refractive index high, reducing power is strong, covering power is big etc.
Advantage, is widely used in the industry such as coating, plastics, papermaking.
Whiteness is one of most important characteristic of titanium dioxide.Generally, titanium dioxide is to all wavelengths in various visible rays
Light wave has the reflection of equal extent, thus white is presented.The height of titanium dioxide whiteness has for the range of application of titanium dioxide
Requirement of the industry such as strong influence, such as coating, papermaking, ink to color is extremely strict, if the whiteness of titanium dioxide is relatively low,
Its range of application can be then substantially reduced, its value is reduced.
The standard with regard to titanium dioxide whiteness detection in oleaginous system announced at present is few and is substantially range estimation
Method.It is to spread over the slurry of obtained sample and standard sample with same direction for example in the detection of conventional analysis whiteness
On colourless glass plates, with opaque band made by wet film maker (100 μm of wet-film thickness), after painting immediately in scattering daylight or
Under standard sources, the surface of opaque band is observed.Result of the test is represented with sample with the color distortion degree of standard specimen.Whiteness with
Approximately, it is not less than, elementary errors is evaluated in standard sample and plus form and aspect.This detection method can only judge testing sample with mark
Whiteness difference between sample, if when color is close or multiple testing samples compare simultaneously, range estimation inspection is difficult to judge difference,
Different people can draw different conclusions, it is believed that be certified products, and someone is then judged to Grade A.Therefore, it is to solve this to ask
Topic, then need a comparatively objective and accurate instrument detection data to help us to judge.
The content of the invention
The defect that whiteness is present is detected for existing ocular estimate.The goal of the invention of the present invention is that a kind of titanium dioxide of offer is normal
The detection method of rule whiteness, to reach whiteness of the reaction titanium dioxide of objective reality in oleaginous system.
The present invention solves the technical scheme of above-mentioned technical problem, comprises the following steps：Take titanium dioxide, linseed oil and make slurry
Shape thing, by slurry on PP films masking, place a PP film again on obtained film, with standard white plate as bottom, surveyed with light splitting
Color meter is detected.
Specifically, in said method, with reference to GB/T1864-1989 slurry is prepared.
Preferably, in said method, described PP films are BOPP film.
Preferably, in said method, described PP film surface wettabilities tension force 38 × 10-5～70 × 10-5N/cm, thickness is
20～25 μm.
Preferably, in said method, the obtained film width is 25～30mm, a length of 40～50mm of contact edge, thickness
100μm。
The inventive method has simple to operate, occurs that color is close in the detection or multiple testing samples are while compare, and
When range estimation inspection is difficult to judge difference, the degree of accuracy is not only increased relative to existing ocular estimate with the method detection, shorten and judge
As a result time, operating efficiency is also greatly improved.
Specific embodiment
The inventive method is with reference to the concrete operations that GB/T1864-1989 relevant regulations prepare slurry：Weigh 2.0g (accurate
Really it is placed on the lower glass plates of autogenous mill to 0.0001) sample, extracts 0.6ml linseed oils with needle tubing and add, with tune
The point of a knife of knife is sufficiently mixed pigment and linseed oil, and close autogenous mill, and the power for applying about 1KN is ground, per all over 50
Turn, be co-mulled and made into four times, be collected together the slurry on two plates with toolsetting after often grinding one time, and by toolsetting on top plate
Wipe clear, after grinding terminates, slurry is removed from plate, with the method the slurry needed for detection is prepared.
The above-mentioned slurry for preparing adopts wet film maker masking.
The PP films that the inventive method is adopted are preferably BOPP film, with colourless, odorless, tasteless, nontoxic, and have high stretching strong
Degree, impact strength, rigidity, obdurability and the good transparency.Required testing result is obtained in order to shorten detection cycle, so
This PP film is selected, and requires its surface wettability tension force 38 × 10-5～70 × 10-5N/cm, thickness is 20～25 μm.
The following is and embodiments of the invention have been described in detail, but the content is only the preferable enforcement of the present invention
Example, it is impossible to be considered as the practical range for limiting the present invention.
Embodiment
Two kinds of titanium dioxides, respectively sample 1, sample 2 are taken, required slurry are obtained with reference first to GB/T1864-1989,
With wet film maker (100 μm of wet-film thickness) in PP films (surface wettability tension force 38 × 10-5～70 × 10-5N/cm, thickness is 20
～25 μm) on masking.Place a PP film again on obtained film, same sample does respectively 3 sample films, in spectral photometric colour measuring
With standard white plate as bottom on meter, each sample film detects the whiteness of corresponding 3 points, and the whiteness for drawing quantization is represented with Lab.
Table 1
Table 2
As can be seen from Table 1 and Table 2, the Lab values of sample 1 and sample 2, and by calculating Hunter Baidu, to average
The comparison of value is so as to helping judge whiteness.It is better than sample 2 for the whiteness of sample 1 by the method acquired results.
And estimate acquired results with common detection methods：Sample 1 is not less than sample 2.Illustrate detection method with it is normal
Ocular estimate acquired results during rule detection are consistent and more objective and accurate.
Claims (5)
1. the detection method of a kind of titanium dioxide routine whiteness, it is characterised in that：Comprise the following steps：Take titanium dioxide, linseed oil
Make slurry, by slurry on PP films masking, place a PP film again on obtained film, with standard white plate as bottom, use
Spectral photometric colour measuring meter is detected.
2. method according to claim 1, it is characterised in that：Slurry is prepared with reference to GB/T1864-1989.
3. method according to claim 1, it is characterised in that：Described PP films are BOPP film.
4. method according to claim 1, it is characterised in that：Described PP film surface wettabilities tension force is 38 × 10-5～70
×10-5N/cm, thickness is 20～25 μm.
5. method according to claim 1, it is characterised in that：The obtained film 25～30mm of width, contacts the length of side 40
～50mm, 100 μm of thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610944171.9A CN106644956A (en) | 2016-11-02 | 2016-11-02 | Detection method for conventional whiteness of titanium dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610944171.9A CN106644956A (en) | 2016-11-02 | 2016-11-02 | Detection method for conventional whiteness of titanium dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106644956A true CN106644956A (en) | 2017-05-10 |
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ID=58820567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610944171.9A Pending CN106644956A (en) | 2016-11-02 | 2016-11-02 | Detection method for conventional whiteness of titanium dioxide |
Country Status (1)
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| CN (1) | CN106644956A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519156A (en) * | 2018-02-12 | 2018-09-11 | 禄丰新立钛业有限公司 | The method for evaluating titanium dioxide color |
| CN113933128A (en) * | 2021-11-26 | 2022-01-14 | 攀钢集团重庆钛业有限公司 | Method for detecting whiteness of titanium dioxide in paint |
| CN114167087A (en) * | 2021-12-02 | 2022-03-11 | 攀钢集团重庆钛业有限公司 | Method for rapidly measuring and calculating average particle size of titanium dioxide product |
| CN114323855A (en) * | 2021-12-28 | 2022-04-12 | 攀枝花东方钛业有限公司 | Sample preparation method for titanium dioxide papermaking application evaluation method |
-
2016
- 2016-11-02 CN CN201610944171.9A patent/CN106644956A/en active Pending
Non-Patent Citations (6)
| Title |
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| 凌云星等: "《油墨技术手册》", 31 December 2009 * |
| 吴立峰等: "《色母粒应用技术问答》", 31 December 2000 * |
| 左银启: "金红石型钛白粉在水性涂料中的应用性能研究", 《2015年钛白粉行业年会》 * |
| 张秀梅等: "《涂料工业用原材料技术标准手册》", 31 December 2004 * |
| 王家驹: "塑料薄膜湿润张力的检测", 《印刷技术》 * |
| 黄灵阁等: "BOPP膜上油墨显色色域的分析", 《包装工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519156A (en) * | 2018-02-12 | 2018-09-11 | 禄丰新立钛业有限公司 | The method for evaluating titanium dioxide color |
| CN113933128A (en) * | 2021-11-26 | 2022-01-14 | 攀钢集团重庆钛业有限公司 | Method for detecting whiteness of titanium dioxide in paint |
| CN114167087A (en) * | 2021-12-02 | 2022-03-11 | 攀钢集团重庆钛业有限公司 | Method for rapidly measuring and calculating average particle size of titanium dioxide product |
| CN114323855A (en) * | 2021-12-28 | 2022-04-12 | 攀枝花东方钛业有限公司 | Sample preparation method for titanium dioxide papermaking application evaluation method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170510 |