CN110542646A - Method for detecting light resistance of papermaking titanium dioxide - Google Patents
Method for detecting light resistance of papermaking titanium dioxide Download PDFInfo
- Publication number
- CN110542646A CN110542646A CN201910905132.1A CN201910905132A CN110542646A CN 110542646 A CN110542646 A CN 110542646A CN 201910905132 A CN201910905132 A CN 201910905132A CN 110542646 A CN110542646 A CN 110542646A
- Authority
- CN
- China
- Prior art keywords
- titanium dioxide
- papermaking
- detecting
- base paper
- preparing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/004—Investigating resistance of materials to the weather, to corrosion, or to light to light
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Paper (AREA)
Abstract
The invention belongs to the field of titanium dioxide performance detection methods, and particularly relates to a method for detecting light resistance of papermaking titanium dioxide, which comprises the following steps: s1, preparing base paper, namely uniformly stirring titanium dioxide, raw wood pulp and water, and then preparing the base paper; s2, preparing the decorative paperboard, namely completely dipping base paper in a melamine resin solution, drying, and preparing the dried base paper into the decorative paperboard; s3, light resistance detection, namely placing the decorative paperboard into a rapid aging instrument, covering half of the decorative paperboard, exposing half of the decorative paperboard, then measuring the L a b of the covered part and the exposed part respectively by a spectrocolorimeter, and calculating to obtain color difference delta E, namely the light resistance of the titanium dioxide. The detection method provided by the invention is simple to operate, has a short flow, and can accurately judge the light fastness level of the titanium dioxide in papermaking.
Description
Technical Field
The invention relates to the field of titanium dioxide performance detection methods, in particular to a method for detecting light resistance of papermaking titanium dioxide.
Background
Titanium dioxide (commonly known as titanium dioxide) is a nontoxic and harmless inorganic pigment, has the characteristics of good whiteness, high covering performance, good weather resistance and the like, and is widely applied to the fields of coatings, plastics, papermaking and the like. Wherein the papermaking is the third application field of the titanium dioxide. The decorative base paper is a raw material for producing furniture cabinets, reinforced wood floors and the like, and the quality of the decorative base paper directly influences the quality of downstream products. In the long-term use of the cabinet, the laminate flooring and the like, the color change or yellowing phenomenon occurs when the cabinet, the laminate flooring and the like are subjected to the irradiation of sunlight. Therefore, the light fastness of the decorative base paper is an important detection index in related industries. Titanium dioxide is used as a main raw material for producing decorative base paper, and because of strong ultraviolet absorption capacity, under the irradiation of ultraviolet light, oxygen ions in the titanium dioxide lose electrons and become oxygen atoms, and the oxygen atoms enter the impregnating resin of the decorative base paper, so that the resin is decomposed and broken, and the color of the decorative base paper is changed. Therefore, titanium dioxide plays a decisive role in the light resistance of decorative base papers. The paper manufacturer producing the decorative base paper attaches great importance to the light resistance of the titanium dioxide. At present, the method for detecting light fastness in the paper making industry refers to a method for detecting light fastness in the textile industry, and three methods of blue wool, gray card, delta E and the like are adopted.
Patent CN103063560A discloses a method for detecting UV light stability of titanium white powder special for papermaking, which comprises uniformly dispersing titanium white powder and carbonate in linseed oil, glycerin or vaseline oil to obtain a mixed slurry, then making a film to measure CIE L a b, irradiating the film for a certain time under ultraviolet light, then measuring CIE L a b, and calculating Δ E before and after irradiation, thereby determining UV light stability of titanium white powder. Although the detection method shortens the detection period, the titanium dioxide is easy to precipitate after being mixed with the grease, and the storage time is short, so that the method is not suitable for long-term use.
The patent CN104849202A discloses a method for rapidly detecting light resistance of titanium dioxide for papermaking, which comprises the steps of dispersing titanium dioxide and resin in water, mixing to obtain slurry, preparing the slurry into a membrane, drying, measuring CIE A B value of the membrane by a color difference meter, then placing the membrane into an ultraviolet aging box for irradiation, detecting the CIE A B value of the irradiated membrane by the color difference meter, and calculating delta E, namely the light resistance of the titanium dioxide. Although the detection method shortens the detection period, the titanium dioxide is easy to precipitate after being mixed with the grease, and the storage time is short, so that the method is not suitable for long-term use. And the prepared test film is easy to crack, the yield of finished products is low, and the test accuracy is influenced.
Disclosure of Invention
The invention aims to provide a method for detecting the light resistance of papermaking titanium dioxide, which has short operation flow and is beneficial to long-term storage of the prepared decorative paperboard.
The invention firstly provides a method for detecting the light resistance of papermaking titanium dioxide, which comprises the following steps:
S1, preparing base paper, namely uniformly stirring titanium dioxide, raw wood pulp and water, and then preparing the base paper;
s2, preparing the decorative paperboard, namely completely dipping base paper in melamine resin, drying, and preparing the dried base paper into the decorative paperboard;
S3, light resistance detection, namely placing the decorative paperboard into a rapid aging instrument, covering half of the decorative paperboard, exposing half of the decorative paperboard, then measuring the L a b of the covered part and the exposed part respectively by a spectrocolorimeter, and calculating to obtain color difference delta E, namely the light resistance of the titanium dioxide.
In the method for detecting the light resistance of the papermaking titanium dioxide, in step S1, the weight-volume ratio of the titanium dioxide, the raw wood pulp and the water is 1.5-3 g: 2-4 g: 200-300 ml.
In the method for detecting the light resistance of the papermaking titanium dioxide, in step S1, the stirring speed is 2000-2500 r/min; the stirring time is 40-60 s.
in the method for detecting the light resistance of the papermaking titanium dioxide, in step S2, the melamine resin is one or more than two of melamine resin, melamine formaldehyde resin, methanol etherified melamine formaldehyde resin, butanol etherified melamine formaldehyde resin, sulfonated melamine resin or sulfamate melamine resin.
In the method for detecting the light resistance of the papermaking titanium dioxide, in step S2, the drying temperature is 120-130 ℃, and the drying time is 90-120S.
In the method for detecting the light resistance of the titanium dioxide for papermaking, in step S2, the decorative paperboard is pressed by a hot press, the temperature of the hot press is 160-170 ℃, and the hot pressing time is 35-50S.
in the method for detecting the light resistance of the titanium dioxide for papermaking, in step S3, the exposure time is 2-3 hours.
in the method for detecting the light resistance of the titanium dioxide for papermaking, in step S3, the temperature in the rapid aging instrument is 50-60 ℃, and the illumination intensity is 42W/m 2.
Compared with the prior art, the invention has the beneficial effects that:
the method is simple to operate and short in flow, and the light resistance difference of different titanium dioxide can be compared in a mode of detecting color difference by an instrument, and the light resistance of the titanium dioxide in papermaking can be accurately judged; the melamine resin system used in the method is consistent with the resin system used by downstream customers, so that the consistency of the detection result is ensured.
Drawings
FIG. 1 is a block diagram of the sun print of three samples of titanium dioxide from different manufacturers according to example 1;
FIG. 2 is a block diagram of the blueprint of three samples of titanium dioxide from different manufacturers according to example 2.
Detailed Description
Specifically, the method for detecting the light resistance of the papermaking titanium dioxide comprises the following steps:
S1, preparing base paper, namely uniformly stirring titanium dioxide, raw wood pulp and water, and then preparing the base paper;
S2, preparing the decorative paperboard, namely completely dipping base paper in melamine resin, drying, and preparing the dried base paper into the decorative paperboard;
s3, light resistance detection, namely placing the decorative paperboard into a rapid aging instrument, covering half of the decorative paperboard, exposing half of the decorative paperboard, then measuring the L a b of the covered part and the exposed part respectively by a spectrocolorimeter, and calculating to obtain color difference delta E, namely the light resistance of the titanium dioxide.
Raw wood pulp refers to pulp made from wood chips from cooking to extract fibers.
In step S1 of the method, in order to uniformly disperse the titanium dioxide, the weight-volume ratio of the titanium dioxide, the raw wood pulp and the water is set to be 1.5-3 g: 2-4 g: 200-300 ml; setting the stirring speed to 2000-2500 r/min; the stirring time is 40-60 s.
In step S2 of the method of the present invention, in order to make the detection more representative, melamine-based resin is selected as the adhesive, and preferably, the melamine-based resin is one or more of melamine resin, melamine formaldehyde resin, methanol etherified melamine formaldehyde resin, butanol etherified melamine formaldehyde resin, sulfonated melamine resin, or sulfamate melamine resin.
in step S2 of the method of the present invention, if the temperature of the hot press is too low, the base paper cannot be well pressed on the laminate, which may cause the base paper to fall off; if the temperature of the hot press is too high, further decomposition of the resin may result. Therefore, the temperature of the hot press is set to be 160-170 ℃; in order to completely cure the resin while hot-pressing, the hot-pressing time is set to be 35-50 s.
In the step S3 of the method, the exposure time is 2-3 h; the temperature in the rapid aging instrument is 50-60 ℃, and the illumination intensity is 42W/m 2.
The scheme of the invention will be explained with reference to the examples. It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The raw materials are not indicated by manufacturers, and are all conventional products which can be obtained commercially.
Example 1
1. Preparing three titanium pigments purchased from different manufacturers;
2. Weighing 1.5g of titanium dioxide, 2.0g of log wood pulp and 200ml of water, stirring for 40s in a stirrer at the stirring speed of 2000-2500r/min, and then preparing base paper in a paper machine for later use;
3. And (3) putting the base paper into melamine resin for full gum dipping, and drying in an oven at 120 ℃ for 100 s. And putting the dried base paper on a laminated paperboard, putting the laminated paperboard into a 160 ℃ hot press, pressing for 35s, and taking out to obtain the decorative paperboard.
4. placing the decorative paperboard into a rapid aging instrument with the temperature of 50 ℃ and the illumination intensity of 42W/m2, covering half of the decorative paperboard by using an opaque aluminum plate, starting to expose the decorative paperboard, taking out a sample plate after 2 hours, and respectively testing the L a b values of the unexposed and exposed parts by using a spectrocolorimeter to obtain the color difference delta E.
The color difference of three titanium dioxide samples containing different manufacturers is respectively as follows: Δ E1 ═ 0.53, Δ E2 ═ 0.91, and Δ E3 ═ 0.55. From this, light resistance 1# > 3# > 2 #. The blueprint is shown in figure 1.
Example 2
1. Preparing three titanium pigments purchased from different manufacturers;
2. stirring 3g of titanium dioxide, 4g of log wood pulp and 300ml of water in a stirrer for 40s at the stirring speed of 2000-2500r/min, and then preparing base paper in a paper machine for later use;
3. And (3) putting the base paper into melamine resin for full gum dipping, and drying in an oven at 120 ℃ for 100 s. And putting the dried base paper on a laminated paper board, putting the laminated paper board into a 160 ℃ hot press, pressing for 40s, and taking out to obtain the decorative paper board.
4. The decorative board was placed in a rapid aging apparatus at 50 ℃ and a light intensity of 42W/m2, and half-covered with an opaque aluminum plate and exposed to the sun. And (4) taking out the sample plate after 2h, and respectively testing the L a b values of the unexposed and exposed parts by using a spectrocolorimeter to obtain the color difference delta E.
The color difference of three titanium dioxide samples containing different manufacturers is respectively as follows: Δ E1 ═ 0.45, Δ E2 ═ 0.50, and Δ E3 ═ 0.88. From this, light resistance 1# > 2# > 3 #. The blueprint 2 is shown below.
Claims (8)
1. The method for detecting the light resistance of the papermaking titanium dioxide is characterized by comprising the following steps:
S1, preparing base paper, namely uniformly stirring titanium dioxide, raw wood pulp and water, and then preparing the base paper;
s2, preparing the decorative paperboard, namely completely dipping base paper in melamine resin, drying, and preparing the dried base paper into the decorative paperboard;
S3, light resistance detection, namely placing the decorative paperboard into a rapid aging instrument, covering half of the decorative paperboard, exposing half of the decorative paperboard, then measuring the L a b of the covered part and the exposed part respectively by a spectrocolorimeter, and calculating to obtain color difference delta E, namely the light resistance of the titanium dioxide.
2. The method for detecting the light fastness of the papermaking titanium dioxide according to claim 1, characterized in that: in the step S1, the weight-volume ratio of the titanium dioxide, the raw wood pulp and the water is 1.5-3 g: 2-4 g: 200-300 ml.
3. The method for detecting the light fastness of the papermaking titanium dioxide according to claim 1, characterized in that: in the step S1, the stirring speed is 2000-2500 r/min; the stirring time is 40-60 s.
4. the method for detecting the light fastness of the papermaking titanium dioxide according to claim 1, characterized in that: in step S2, the melamine-based resin is one or more of melamine resin, melamine-formaldehyde resin, methylated melamine-formaldehyde resin, butylated melamine-formaldehyde resin, sulfonated melamine resin, or sulfamate melamine resin.
5. The method for detecting the light fastness of the papermaking titanium dioxide according to claim 1, characterized in that: in step S2, the drying temperature is 120-130 ℃, and the drying time is 90-120S.
6. the method for detecting the light fastness of the titanium dioxide powder for papermaking according to claim 1, wherein the method comprises the following steps: in the step S2, the decorative paperboard is pressed by a hot press, the temperature of the hot press is 160-170 ℃, and the hot pressing time is 35-50S.
7. The method for detecting the light fastness of the titanium dioxide powder for papermaking according to claim 1, wherein the method comprises the following steps: in the step S3, the exposure time is 2-3 h.
8. the method for detecting the light fastness of the titanium dioxide powder for papermaking according to claim 1, wherein the method comprises the following steps: in step S3, the temperature in the rapid aging apparatus is 50-60 ℃, and the illumination intensity is 42W/m 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910905132.1A CN110542646A (en) | 2019-09-24 | 2019-09-24 | Method for detecting light resistance of papermaking titanium dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910905132.1A CN110542646A (en) | 2019-09-24 | 2019-09-24 | Method for detecting light resistance of papermaking titanium dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110542646A true CN110542646A (en) | 2019-12-06 |
Family
ID=68714370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910905132.1A Pending CN110542646A (en) | 2019-09-24 | 2019-09-24 | Method for detecting light resistance of papermaking titanium dioxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110542646A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795934A (en) * | 2020-07-16 | 2020-10-20 | 山东世纪阳光纸业集团有限公司 | Evaluation and analysis method of titanium dioxide for decorative base paper |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198368A (en) * | 2014-09-26 | 2014-12-10 | 攀钢集团钛业有限责任公司 | Quantitative analysis method for melamine decorative paper |
| CN104849202A (en) * | 2015-05-28 | 2015-08-19 | 河南佰利联化学股份有限公司 | Method for quickly detecting light resistance of titanium dioxide for papermaking |
| CN105738271A (en) * | 2016-02-24 | 2016-07-06 | 中国科学院宁波材料技术与工程研究所 | Test method for light resistance of titanium dioxide |
| CN108956486A (en) * | 2018-08-21 | 2018-12-07 | 海南金海浆纸业有限公司 | A kind of dyestuff appraisal procedure |
| CN109187888A (en) * | 2018-10-31 | 2019-01-11 | 攀钢集团重庆钛业有限公司 | The method for detecting papermaking titanium white covering power |
-
2019
- 2019-09-24 CN CN201910905132.1A patent/CN110542646A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198368A (en) * | 2014-09-26 | 2014-12-10 | 攀钢集团钛业有限责任公司 | Quantitative analysis method for melamine decorative paper |
| CN104849202A (en) * | 2015-05-28 | 2015-08-19 | 河南佰利联化学股份有限公司 | Method for quickly detecting light resistance of titanium dioxide for papermaking |
| CN105738271A (en) * | 2016-02-24 | 2016-07-06 | 中国科学院宁波材料技术与工程研究所 | Test method for light resistance of titanium dioxide |
| CN108956486A (en) * | 2018-08-21 | 2018-12-07 | 海南金海浆纸业有限公司 | A kind of dyestuff appraisal procedure |
| CN109187888A (en) * | 2018-10-31 | 2019-01-11 | 攀钢集团重庆钛业有限公司 | The method for detecting papermaking titanium white covering power |
Non-Patent Citations (4)
| Title |
|---|
| 吴振娟: ""含HYP高档涂布纸白度稳定性的研究"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 李星龙: ""优化涂料配方提高含HYP涂布纸的白度稳定性"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 许英: ""涂布再生箱板纸的性能与印刷适性"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 骆志荣、马涛: ""装饰纸/纸板的染料光照变色机理及其耐光色牢度的测定方法"", 《华东纸业》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795934A (en) * | 2020-07-16 | 2020-10-20 | 山东世纪阳光纸业集团有限公司 | Evaluation and analysis method of titanium dioxide for decorative base paper |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Fergus et al. | The distribution of lignin in birch wood as determined by ultraviolet microscopy | |
| EP2158358B1 (en) | Ink-jet-printable decorative paper | |
| EP2222922B2 (en) | Compressible decorative paper impregnating agent which can be printed by the inkjet method | |
| CN104849202A (en) | Method for quickly detecting light resistance of titanium dioxide for papermaking | |
| CN106965271A (en) | A kind of outdoor recombination bamboo product and preparation method | |
| AU2012237486A1 (en) | Method for surface treatment of a titanium dioxide pigment | |
| US7824486B2 (en) | Paper laminates | |
| CN110542646A (en) | Method for detecting light resistance of papermaking titanium dioxide | |
| CN103063560B (en) | Method for detecting UV (ultraviolet) light stability of special titanium dioxide for paper making | |
| CN109187888A (en) | The method for detecting papermaking titanium white covering power | |
| CN113089380A (en) | Heat-sealing self-adhesive high-strength medical dialyzing paper and processing method thereof | |
| CN113799220A (en) | Environment-friendly odorless melamine impregnated film paper veneer and preparation method thereof | |
| JP3242388B2 (en) | Decorative paper base | |
| CN111795934A (en) | Evaluation and analysis method of titanium dioxide for decorative base paper | |
| US6312827B1 (en) | Pre-Impregnated product and its employment in manufacture of decorative compound structures | |
| Wen et al. | Study of the discoloration behaviour of teak wood (tectona grandis linn. fil.) caused by simulated sunlight | |
| CN111307559B (en) | Impregnation method in process of detecting application performance of papermaking titanium dioxide | |
| CN108611908A (en) | A kind of preparation method and products thereof of biomass-based flexible clear materials | |
| CN117309738A (en) | Method for detecting light resistance of titanium dioxide for decorative paper | |
| Kenjo | Certain deterioration factors for works of art and simple devices to monitor them | |
| CN106272849A (en) | Use the method that high temperature resistant composite urea formaldehyde resin produces full Eucalyptus solid wooden compound floor | |
| KR102565296B1 (en) | Protocol for evaluating Oriental Lacquer material and method for providing information of the same | |
| DE4240982A1 (en) | Process for the preparation of impregnated papers for surface coating | |
| US3523051A (en) | Method of manufacturing decorative boards by use of thermosetting resins | |
| CN117364530A (en) | Sun-proof biomass paper and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191206 |
|
| RJ01 | Rejection of invention patent application after publication |