CN101921514B - Reinforcing agent for protecting blackboard chalk writing files - Google Patents
Reinforcing agent for protecting blackboard chalk writing files Download PDFInfo
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- CN101921514B CN101921514B CN201010243363XA CN201010243363A CN101921514B CN 101921514 B CN101921514 B CN 101921514B CN 201010243363X A CN201010243363X A CN 201010243363XA CN 201010243363 A CN201010243363 A CN 201010243363A CN 101921514 B CN101921514 B CN 101921514B
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- chalk writing
- reinforcing agent
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Abstract
The invention provides a reinforcing agent for protecting blackboard chalk writing files, which is prepared by the following components in percentage by weight: 2.0-3.0% of ethylcellulose, 0.6-2.0 % of Aerosil R972, 38.0-57.0% of n-butyl alcohol and 39.4-59.4% of ethanol. The reinforcing agent for protecting the blackboard chalk writing files of the invention can keep original appearance of the chalk writing, prevent the blackboard chalk writing from pollution, dropping and other phenomena, obviously improve weather fastness, adhesive force, water resistance and stain resistance of the blackboard chalk writing and permanently preserve the blackboard chalk writing. The reinforcing agent for protecting the blackboard chalk writing files can be widely applied to protect the chalk writing files.
Description
Technical field
The invention belongs to the material technology field, be specifically related to a kind of strengthening agent that prevents that chalk writing from coming off.
Background technology
The blackboard chalk writing is a kind of precious writing archives of special shape.The National Museum keeps the catch-phrase that revolutionary war Red Army in period writes with chalk at present; Other museums also keep the blackboard newspaper in each period; All reflected social condition or important historical information at that time to all chalk writings of leaving between last 100 years decades ago; 8.0 grades of special violent earthquakes have taken place in Wenchuan, China Sichuan in 2008; 7.1 grades of violent earthquakes had taken place again in the Qinghai cajaput in 2010; The party and state leaders gos deep into a line, comes to disaster area commander's earthquake relief work work personally; When visiting the disaster area student, write soul-stirring epigraph with chalk, become the historical witness and the precious file of the great struggle of twice earthquake relief work.
The weather resistance of writing archives is closely related with the fastness that combines of carrier with the pigment and the pigment that constitute the writing material.The fastness that combines of general pigment and carrier can be summed up as three types of filming types, absorption-type, adhesive type.The writing material of blackboard chalk writing archives mainly is made up of more stable inorganics calcium sulfate; But, after chalk writes on the blackboard, do not form conjunctiva; Do not absorbed by blackboard yet; Its set fastness is very poor, and the historical relic of chalk writing can not touch, can not wrap up, be afraid of wind etc., so the weather resistance of blackboard chalk writing archives is very poor.The blackboard chalk writing has porousness and adhesivity simultaneously; Dust very easily permeates wherein, adheres on it; In the course of time can severe contamination or change the original appearance of chalk writing; Moisture in the absorbed air of dust meeting simultaneously, the gluey white lake that hydrolysis produces can adsorb dust again once more, causes vicious cycle.In addition, be adsorbed on that obnoxious flavoures such as acid dust on the letter written with chalk, oxynitride, muriate can make that chalk becomes loose and coming off.In case chalk comes off, all historical informations that it carries just disappear forever, come to naught.At present, the relevant report that does not still have chalk writing archives conservation field both at home and abroad.
Summary of the invention
It is a kind of under the situation that does not change blackboard chalk writing original appearance that technical problem to be solved by this invention is to provide, the reinforcing agent for protecting blackboard chalk writing files that the enhancing of chalk writing sticking power, stability and weather resistance are improved.
Solving the problems of the technologies described above the technical scheme that is adopted is to be processed by the raw material of following mass percent:
Above-mentioned TKK 021 is provided by Xinning, Shantou City chemical industry ltd; Aerosil R972 aerosil is provided by sea, Shanghai ease scientific & trading Co., Ltd.; Propyl carbinol, ethanol are analytical pure.
The best in quality per-cent of reinforcing agent for protecting blackboard chalk writing files of the present invention is:
The preparation method of reinforcing agent for protecting blackboard chalk writing files of the present invention is following:
1, preparation TKK 021 butanol solution
By above-mentioned mass percent TKK 021 is placed the round-bottomed flask that fills propyl carbinol, be heated to 120 ℃ with the electric mantle magnetic stirrer, stirring and refluxing to TKK 021 dissolves fully, is mixed with the TKK 021 butanol solution.
2, preparing A erosil R972 aerosil alcohol dispersion liquid
By above-mentioned mass percent exsiccant Aerosil R972 aerosil is joined and to fill in the alcoholic acid triangular flask; Use power to handle to the oyster white hyalosome as the UW room temperature of 40kHz, be mixed with Aerosil R972 aerosil alcohol dispersion liquid as ultrasonic generator, the frequency of 100W.
3, preparation reinforcing agent for protecting blackboard chalk writing files
With the TKK 021 butanol solution of step 1 preparation, the Aerosil R972 aerosil alcohol dispersion liquid of step 2 preparation; Use power to handle 1 hour as the UW room temperature of 40kHz as ultrasonic generator, the frequency of 100W; Aerosil R972 aerosil is dispersed in the TKK 021, is prepared into reinforcing agent for protecting blackboard chalk writing files.
Adopt reinforcing agent for protecting blackboard chalk writing files of the present invention to the constructional method of blackboard chalk writing file reinforcement protection to be: with spray gun reinforcing agent for protecting blackboard chalk writing files of the present invention evenly is sprayed at the surface of blackboard chalk writing, normal temperature is placed to dried.
Reinforcing agent for protecting blackboard chalk writing files of the present invention can keep the simple and unsophisticated original appearance of chalk writing; Prevent the generation of phenomenons such as the blackboard chalk writing is contaminated, writing comes off; Blackboard chalk writing weathering resistance, sticking power, water tolerance, stain resistance are significantly increased, and the blackboard chalk writing is preserved for a long time.Reinforcing agent for protecting blackboard chalk writing files of the present invention can be widely used in the protection of chalk writing archives.
Description of drawings
Fig. 1 is sandblast effect before and after the blackboard chalk writing is reinforced, high pressure air-blowing effect, wipes design sketch.
Fig. 2 is the specular reflectance excluded graphic representation of blackboard before and after the blackboard chalk writing is reinforced.
Fig. 3 is that blackboard chalk writing absorption dust contrasts design sketch after two months.
Fig. 4 is that the blackboard chalk writing is placed 1 day contrast design sketch in hydrochloric acid atmosphere.
Fig. 5 is that the blackboard chalk writing is placed 7 days contrast design sketchs in nitric acid atmosphere.
Fig. 6 is that the blackboard chalk writing soaks 1 hour contrast design sketch in cold water.
Embodiment
To further explain of the present invention, but the invention is not restricted to these embodiment below in conjunction with accompanying drawing and embodiment.
Embodiment 1
Reinforcing agent for protecting blackboard chalk writing files 100g of the present invention is an example with preparation, and is raw materials used and the quality proportioning is following:
Its preparation method is following:
1, preparation TKK 021 butanol solution
TKK 021 2.5g is placed the round-bottomed flask that fills the 47.5g propyl carbinol, be heated to 120 ℃ with the electric mantle magnetic stirrer, stirring and refluxing to TKK 021 dissolves fully, is mixed with the TKK 021 butanol solution.
2, preparing A erosil R972 aerosil alcohol dispersion liquid
1.0g exsiccant Aerosil R972 aerosil joined fill in the 49.0g alcoholic acid triangular flask; Use power to handle to the dispersion liquid hyalosome that is creamy white as the UW room temperature of 40kHz, be mixed with Aerosil R972 aerosil alcohol dispersion liquid as 100W ultrasonic generator, frequency.
3, preparation reinforcing agent for protecting blackboard chalk writing files
The TKK 021 butanol solution of step 1 preparation, the Aerosil R972 aerosil alcohol dispersion liquid of step 2 preparation are mixed; Use power to handle 1 hour as the UW room temperature of 40kHz as 100W ultrasonic generator, frequency; Aerosil R972 aerosil is dispersed in the TKK 021, is prepared into reinforcing agent for protecting blackboard chalk writing files.
Adopt reinforcing agent for protecting blackboard chalk writing files of the present invention following to the constructional method of blackboard chalk writing file reinforcement protection:
The reinforcing agent for protecting blackboard chalk writing files of above-mentioned preparation evenly is sprayed at blackboard chalk writing surface with spray gun, and normal temperature is placed to dried.Observation is reinforced front and back chalk writing sandblast effect, high pressure air-blowing effect and is wiped effect; Observed result is seen Fig. 1; In Fig. 1; Fig. 1 a first row is a sandblast design sketch before the spraying reinforcing agent for protecting blackboard chalk writing files; Fig. 1 a lower section is a sandblast design sketch behind the spraying reinforcing agent for protecting blackboard chalk writing files, and Fig. 1 b first row is a high pressure air-blowing design sketch before the spraying reinforcing agent for protecting blackboard chalk writing files, and Fig. 1 b lower section is a high pressure air-blowing design sketch behind the spraying reinforcing agent for protecting blackboard chalk writing files; Fig. 1 c first row is to wipe design sketch before the spraying reinforcing agent for protecting blackboard chalk writing files, and Fig. 1 c lower section is to clash design sketch after the spraying reinforcing agent for protecting blackboard chalk writing files is reinforced.Visible by Fig. 1, be significantly increased with the chalk writing sticking power after the reinforcing agent for protecting blackboard chalk writing files reinforcing, and kept writing the original appearance of wiping repeatedly blackboard from effect directly perceived.
Embodiment 2
Reinforcing agent for protecting blackboard chalk writing files 100g of the present invention is an example with preparation, and is raw materials used and the quality proportioning is following:
Its preparation method and constructional method are identical with embodiment 1.
Embodiment 3
Reinforcing agent for protecting blackboard chalk writing files 100g of the present invention is an example with preparation, and is raw materials used and the quality proportioning is following:
Its preparation method and constructional method are identical with embodiment 1.
Embodiment 4
Reinforcing agent for protecting blackboard chalk writing files 100g of the present invention is an example with preparation, and is raw materials used and the quality proportioning is following:
Its preparation method and constructional method are identical with embodiment 1.
In order to confirm optimum process condition of the present invention, the contriver has carried out a large amount of laboratory study tests, and various test situation are following:
Laboratory apparatus: the special-purpose sandblast machine of JCK-9060E thermostatic type, sand-blast device ltd produces by lucky river, Qingdao; The full-automatic colour examining colour-difference-metre of DC-P3 type is produced by the emerging flash ranging look in Beijing instrument company; The xeothermic climatic chamber of LRO16A is produced by Chongqing milky way laboratory apparatus ltd; The proofing box of XMTA-7000P type hydrothermal aging is produced by Yuyao thermometer Watch Factory, and German Binder growth cabinet KBF series is produced by Louis, Hong Kong business corporation.
Blackboard chalk writing adhesion test method: wipe method, according to GB/T14826 " measuring method and the evaluation of colored paint coating efflorescence degree " test, table 1 is seen in measuring method and evaluation; Sand-blast is regulated the special-purpose sandblast machine temperature to 60 of JCK-9060E thermostatic type ℃, and blasting pressure is 0.1MPa, and model and nozzle distance are 7cm, spray 6 seconds, observe the writing that stays how much judge the stability of chalk writing; The high pressure air blow off uses the high-pressure spray gun of diameter as 0.2mm, and regulating pressure is 0.8MPa, and model and nozzle distance are 1.5cm, sprays 6 seconds, and how many writings that observation stays judges the stability of chalk writing.
Colour-change---chromatism test before and after the blackboard chalk writing is reinforced with strengthening agent of the present invention: adopt CIE L in 1976
*a
*b
*The chromaticity coordinates system is monitored the colour-change of blackboard, chalk.Value of chromatism is calculated as follows:
ΔE＝[(ΔL
*)
2+(Δa
*)
2+(Δb
*)
2]
1/2
Δ L in the formula
*Be brightness flop value, Δ a before and after reinforcing
*, Δ b poor for the red green article
*, Δ E poor for the champac chromaticity is that derivation value aberration, Δ E are sign colour-change condition, and the big more account for color of Δ E value changes big more, otherwise then the account for color change is more little, and this experimental basis GB/T11186.2 standard is judged the degree of color change.
Experimental result is seen table 2.
The measuring method and the evaluation of table 1 GB/T14826 colored paint coating efflorescence degree
| Grade | The efflorescence state |
| 0 | No efflorescence |
| 1 | Very slight, instrument adds ballast or points firmly wiping model, and wiping cloth (rags) or finger are stained with and just can be observed micro-pigment particles |
| 2 | Slightly, instrument adds ballast or points firmly wiping model, and wiping cloth (rags) or finger speckle with the small amounts of pigment particle |
| 3 | Medium, instrument adds ballast or points firmly wiping model, and wiping cloth (rags) or finger speckle with more pigment particles |
| 4 | Heavier, instrument does not increase the weight of or points firmly to dab and wipe away model, and wiping cloth (rags) or finger speckle with a lot of pigment particles |
| 5 | Seriously, instrument does not increase the weight of or points firmly to dab and wipe away model, and wiping cloth (rags) or finger are stained with a large amount of pigment particles or wipe away plate and occur show-through |
Table 2 variable color grade
1, confirms the strengthening agent proportioning raw materials
According to TKK 021, Aerosil R972 aerosil, propyl carbinol, alcoholic acid mass percent in the table 3, be prepared into the 100g reinforcing agent for protecting blackboard chalk writing files respectively.Be sprayed on reinforcing agent for protecting blackboard chalk writing files on the analog sample respectively with spray gun; Normal temperature is placed to dried; Observe the effect directly perceived of blackboard chalk writing before and after reinforcing; And, change with the aberration behind the colour-difference meter test blackboard chalk writing spraying reinforcing agent for protecting blackboard chalk writing files with the sticking power of the method for wiping, sand-blast, high pressure air blow off test blackboard chalk writing.
Experimental result is seen table 3.
Experimental result before and after the strengthening agent of the different proportionings of table 3 is reinforced
Annotate: the blank sample in the table refers to not spray the analog sample of reinforcing agent for protecting blackboard chalk writing files of the present invention, and the progression of wiping method test sticking power is identical with table 1.
Visible by table 3; By mass percent is the reinforcing agent for protecting blackboard chalk writing files that 2.0%～3.0% TKK 021,0.6%～1.0% AerosilR972 aerosil, 38.0%～57.0% propyl carbinol, 39.4%～59.4% ethanol preparation become, and is suitable for the reinforcement protection of blackboard chalk writing archives.
After adopting the reinforcing agent for protecting blackboard chalk writing files reinforcing analog sample of above-mentioned different mass per-cent, wear out with hot and humid, xeothermic, three kinds of methods of UV-irradiation respectively, various test situation are following:
(1) hydrothermal aging
It is that 80 ℃, relative humidity are aging 7 days of 60% hydrothermal aging case that the analog sample of blank sample and spraying reinforcing agent for protecting blackboard chalk writing files is placed temperature.
(2) xeothermic aging
It is 105 ℃ aging 7 days of xeothermic ageing oven that the analog sample of blank sample and spraying reinforcing agent for protecting blackboard chalk writing files is placed temperature.
(3) ultraviolet ageing
Place power to be 25W, highly to wear out 7 days down the analog sample of blank sample and spraying reinforcing agent for protecting blackboard chalk writing files for the uv lamp of 20cm.
Sample with above-mentioned three kinds of methods after aging was deposited 2 days at normal temperatures, with the method for wiping, sand-blast, high pressure air blow off the blackboard letter written with chalk was carried out stability test then, tested and test result is seen table 4～6.
Writing stability behind table 4 hydrothermal aging
Annotate: the blank sample in the table refers to not spray reinforcing agent for protecting blackboard chalk writing files analog sample of the present invention, and the evaluation of wiping method progression is identical with table 1.
The xeothermic aging back of table 5 writing stability
Annotate: the blank sample in the table refers to not spray reinforcing agent for protecting blackboard chalk writing files analog sample of the present invention, and the evaluation of wiping method progression is identical with table 1.
Writing stability behind table 6 ultraviolet ageing
Annotate: the blank sample in the table refers to not spray reinforcing agent for protecting blackboard chalk writing files analog sample of the present invention, and the evaluation of wiping method progression is identical with table 1.
Visible by table 4～6; By mass percent be after the reinforcing agent for protecting blackboard chalk writing files of 2.0%～3.0% TKK 021,0.6%～1.0% Aerosil R972 aerosil, 38.0%～57.0% propyl carbinol, 39.4%～59.4% ethanol preparation is reinforced the blackboard chalk writing through damp and hot, xeothermic, UV-irradiation after aging 7 days writing stability can remain on more than 1 grade, explain that reinforcing agent for protecting blackboard chalk writing files weathering resistance of the present invention is better.Associative list 3 is visible simultaneously; By mass percent is that blackboard chalk writing after reinforcing agent for protecting blackboard chalk writing files that 2.5% TKK 021,1.0% Aerosil R972 aerosil, 47.5% propyl carbinol, 49.0% ethanol preparation become is reinforced is through damp and hot, xeothermic, UV-irradiation after aging 7 days; Blackboard, chalk aberration are minimum, and sticking power, weather resistance are all better.
Comprehensive above-mentioned test; It is the reinforcing agent for protecting blackboard chalk writing files that 2.0%～3.0% TKK 021,0.6%～1.0% Aerosil R972 aerosil, 38.0%～57.0% propyl carbinol, 39.4%～59.4% ethanol preparation become that the present invention selects by mass percent, and optimal selection is the reinforcing agent for protecting blackboard chalk writing files that 2.5% TKK 021,1.0% Aerosil R972 aerosil, 47.5% propyl carbinol, 49.0% ethanol preparation become by mass percent.
In order to verify beneficial effect of the present invention, the contriver adopts the reinforcing agent for protecting blackboard chalk writing files of the embodiment of the invention 1 preparation that analog sample has been carried out reinforcement protection, and various test situation are following:
Laboratory apparatus: Lambd 950 type UV, visible light near infrared spectrometers are produced by U.S. Perkin-Elmer company.
1, the original appearance of blackboard characterizes before and after the spraying reinforcing agent for protecting blackboard chalk writing files---the specular reflectance excluded test
The contriver adopts Lambd 950 type UV, visible light near infrared spectrometers to test analog sample surface behind the reinforcing agent for protecting blackboard chalk writing files reinforcement protection that simulation sample surfaces and the embodiment of the invention 1 prepare before the spraying reinforcing agent for protecting blackboard chalk writing files at the specular reflectance excluded curve of visible region; Experimental result is seen Fig. 2; Wherein curve a is the specular reflectance excluded curve on blackboard surface before the spraying reinforcing agent for protecting blackboard chalk writing files, and curve b is the specular reflectance excluded curve that the spraying reinforcing agent for protecting blackboard chalk writing files is reinforced blackboard surface, back.Visible by Fig. 2, the specular reflectance excluded curvilinear trend of reinforcing blackboard surface, front and back with reinforcing agent for protecting blackboard chalk writing files of the present invention is close, and the original appearance that can keep blackboard after reinforcing agent for protecting blackboard chalk writing files of the present invention is reinforced is described.
2, endurance quality test
(1) dust is to the influence of chalk writing
Analog sample after the reinforcing agent for protecting blackboard chalk writing files reinforcing of blank sample that does not spray reinforcing agent for protecting blackboard chalk writing files and embodiment 1 preparation is positioned on the outdoor windowsill; Situation is known in placement (on March 18,2010 18 days to 2010 January in) observation chalk writing after two months; Observations is seen Fig. 3; In Fig. 3; Fig. 3 a is positioned over outdoor windowsill chalk writing design sketch after two months with the chalk writing that does not spray reinforcing agent for protecting blackboard chalk writing files; Fig. 3 b upper part is after the spraying reinforcing agent for protecting blackboard chalk writing files is reinforced it to be positioned over outdoor windowsill two months, the chalk writing design sketch after water cleans then, and Fig. 3 b lower part is after reinforcing agent for protecting blackboard chalk writing files is reinforced it to be positioned over outdoor windowsill chalk writing design sketch after two months.Visible by Fig. 3; The chalk writing that does not spray reinforcing agent for protecting blackboard chalk writing files is positioned over behind the outdoor absorption dust smudgy; And the chalk writing water cleaning back chalk writing after the reinforcing of spraying reinforcing agent for protecting blackboard chalk writing files is high-visible, does not influence its original appearance.
(2) obnoxious flavour is to the influence of chalk writing
Analog sample after the reinforcing agent for protecting blackboard chalk writing files of the blank sample that does not spray reinforcing agent for protecting blackboard chalk writing files and embodiment 1 preparation reinforced is positioned over simultaneously and fills in the hydrochloric acid vessel that amount of substance concentration is 5mol/L (writing is above liquid level); Take out after one day; Observe chalk writing and know situation; Observations is seen Fig. 4; In Fig. 4, Fig. 4 a is the chalk writing design sketch that does not spray reinforcing agent for protecting blackboard chalk writing files, and Fig. 4 b is the chalk writing design sketch after the spraying reinforcing agent for protecting blackboard chalk writing files is reinforced.Visible by Fig. 4, the blank sample chalk writing that does not spray reinforcing agent for protecting blackboard chalk writing files comes off and does not see Chu, and the chalk writing after the reinforcing of spraying reinforcing agent for protecting blackboard chalk writing files is still high-visible.
Analog sample after the reinforcing agent for protecting blackboard chalk writing files of the blank sample that does not spray reinforcing agent for protecting blackboard chalk writing files and embodiment 1 preparation reinforced is positioned over simultaneously and fills in the nitric acid vessel that amount of substance concentration is 5mol/L (writing is above liquid level); Take out after 7 days; Observe chalk writing and know situation; Observations is seen Fig. 5; In Fig. 5, Fig. 5 a is the chalk writing design sketch that does not spray reinforcing agent for protecting blackboard chalk writing files, and Fig. 5 b is the chalk writing design sketch after the spraying reinforcing agent for protecting blackboard chalk writing files is reinforced.Visible by Fig. 5, the blank sample chalk writing that does not spray reinforcing agent for protecting blackboard chalk writing files is fuzzy, and the chalk writing after the reinforcing of spraying reinforcing agent for protecting blackboard chalk writing files is still high-visible.
This test explanation reinforcing agent for protecting blackboard chalk writing files of the present invention can stop the destruction of obnoxious flavoures such as oxynitride, hydrogenchloride to chalk writing.
(3) water is to the influence of chalk writing---the cold water soak experiment
According to GB/T1733-93 " paint film water tolerance assay method ", the water resistance of chalk writing before and after test is reinforced.1/2 of analog sample after the reinforcing agent for protecting blackboard chalk writing files reinforcing of blank sample that does not spray reinforcing agent for protecting blackboard chalk writing files and embodiment 1 preparation is immersed in the water (normal temperature) simultaneously; Observe chalk writing after 1 hour and know situation; Observations is seen Fig. 6; In Fig. 6; Fig. 6 a upper part is the chalk writing design sketch that does not spray reinforcing agent for protecting blackboard chalk writing files; Fig. 6 a lower part is that the chalk writing that does not spray reinforcing agent for protecting blackboard chalk writing files soaks the design sketch after 1 hour in water, and Fig. 6 b upper part is the chalk writing design sketch after the spraying reinforcing agent for protecting blackboard chalk writing files is reinforced, and Fig. 6 b lower part is that the chalk writing after the spraying reinforcing agent for protecting blackboard chalk writing files is reinforced soaks the design sketch after 1 hour in water.Visible by Fig. 6; The analog sample that does not spray reinforcing agent for protecting blackboard chalk writing files is immersed in writing disappearance in back in the water; And the analog sample writing after the reinforcing of spraying reinforcing agent for protecting blackboard chalk writing files has no variation, explains that the chalk writing water resistance after reinforcing agent for protecting blackboard chalk writing files of the present invention is reinforced significantly improves.
Conclusion
Reinforcing agent for protecting blackboard chalk writing files of the present invention can keep the original appearance of chalk writing, and weathering resistance, sticking power, water tolerance, the stain resistance of blackboard chalk writing are significantly increased, and the blackboard chalk writing can be preserved for a long time.
Claims (2)
1. reinforcing agent for protecting blackboard chalk writing files is characterized in that it is processed by the raw material of following mass percent:
2. according to the described reinforcing agent for protecting blackboard chalk writing files of claim 1, it is characterized in that it is processed by the raw material of following mass percent:
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010243363XA CN101921514B (en) | 2010-07-30 | 2010-07-30 | Reinforcing agent for protecting blackboard chalk writing files |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010243363XA CN101921514B (en) | 2010-07-30 | 2010-07-30 | Reinforcing agent for protecting blackboard chalk writing files |
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| CN101921514A CN101921514A (en) | 2010-12-22 |
| CN101921514B true CN101921514B (en) | 2012-07-04 |
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| CN201010243363XA Expired - Fee Related CN101921514B (en) | 2010-07-30 | 2010-07-30 | Reinforcing agent for protecting blackboard chalk writing files |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104975533B (en) * | 2015-06-09 | 2016-06-15 | 陕西师范大学 | A kind of protection liquid for increasing paper wet strength |
| CN104947506B (en) * | 2015-06-18 | 2016-06-15 | 陕西师范大学 | A kind of record carbon-paper original paper writing visualization reagent and process for show |
| CN105599534B (en) * | 2015-12-10 | 2017-03-22 | 陕西师范大学 | Flaked and powdered mural reinforcing protective agent and preparation and reinforcing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1396220A (en) * | 2001-07-13 | 2003-02-12 | 大连路明发光科技股份有限公司 | Luminous water paint and its preparing process |
| CN101033369A (en) * | 2007-04-19 | 2007-09-12 | 重庆三峡油漆股份有限公司 | Semi-interpenetrating network structure double-component fire resistant paint |
| CN101608082A (en) * | 2009-07-30 | 2009-12-23 | 陕西师范大学 | The compound envelope that is used for the ancient architecture colour painting is protected agent |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000281974A (en) * | 1999-03-30 | 2000-10-10 | Nihon Yamamura Glass Co Ltd | Coating composition for porous substrate |
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2010
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1396220A (en) * | 2001-07-13 | 2003-02-12 | 大连路明发光科技股份有限公司 | Luminous water paint and its preparing process |
| CN101033369A (en) * | 2007-04-19 | 2007-09-12 | 重庆三峡油漆股份有限公司 | Semi-interpenetrating network structure double-component fire resistant paint |
| CN101608082A (en) * | 2009-07-30 | 2009-12-23 | 陕西师范大学 | The compound envelope that is used for the ancient architecture colour painting is protected agent |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2000-281974A 2000.10.10 |
| 张晋平.《保护粉笔字迹的革命文物》科研项目结题报告.《中国文物保护技术协会第二届学术年会论文集》.2002,169-181. * |
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