CN108680457A - Harmful substance contents detection method in a kind of paint - Google Patents
Harmful substance contents detection method in a kind of paint Download PDFInfo
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- CN108680457A CN108680457A CN201810774622.8A CN201810774622A CN108680457A CN 108680457 A CN108680457 A CN 108680457A CN 201810774622 A CN201810774622 A CN 201810774622A CN 108680457 A CN108680457 A CN 108680457A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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Abstract
The invention discloses harmful substance contents in a kind of paint, detection method includes the following steps：（1）Materials：Qualified painting and each portion of painting to be checked are purchased from the market；（2）Dilution：By step（1）The painting of middle qualification and painting to be checked, it is respectively put into four volumetric flasks, and qualification 1, qualification 2 to be measured 1 and to be measured 2 are marked, the high-concentration industrial alcohol of homogenous quantities is reinjected, and by rocking volumetric flask internal paint is sufficiently mixed with high-concentration industrial alcohol；（3）Detection one：Step（2）In qualification 1 and to be measured 1 in launch the silver ammino solutions of homogenous quantities respectively, silvery white metallic silver is precipitated after reaction；By passing through classification with the paint after dilution, and it is compared with the quality size of the product progress solid amount of precipitation of qualification in the market, finally ensure the formaldehyde of its paint to be measured and the Qualification of benzene content, reduces testing cost and solve the problems, such as that whole detection cost is excessively high.
Description
Technical field
The present invention relates to paint nuisance detection technique field, harmful substance contents detect in specially a kind of paint
Method.
Background technology
Paint be it is a kind of can securely be covered in body surface, the chemistry for playing protection, decoration, mark and other specific uses is mixed
Close object coating.Chinese coating circle is more authoritative《Coating process》What one book was defined as：" coating is a kind of material, this
Material can be coated in object surface with different construction technologies, and it is secured, thin with some strength, continuous solid-state to form adherency
Film.The film common name film formed in this way, also known as paint film or coating." paint wherein rich in the organic matters such as formaldehyde and benzene, wherein formaldehyde
It is immeasurable to human injury in air with benzene volatilization, but paint in the prior art has in the process of being detected
Various defects are for example：
Existing detection mode is typically all using high performance liquid chromatography, using spectrophotometry, gas chromatography, Head space
It is detected the benzene and formaldehyde that contain in paint, but its in its checking process needs various sophisticated equipments cooperations, and
Testing cost is high so that its detection wastes a large amount of financial resources, so cannot be satisfied needed for the prior art.
Invention content
The purpose of the present invention is to provide harmful substance contents detection methods in a kind of paint, to solve above-mentioned background
The problem of being proposed in technology.
To achieve the above object, the present invention provides the following technical solutions：Harmful substance contents detection in a kind of paint
Method includes the following steps：
（1）Materials：Qualified painting and each portion of painting to be checked are purchased from the market；
（2）Dilution：By step（1）The painting of middle qualification and painting to be checked, in respectively take the productions of two parts of homogenous quantities
Product are respectively put into four volumetric flasks, and mark qualification 1, qualification 2 to be measured 1 and to be measured 2, reinject the high concentration of homogenous quantities
Industrial alcohol, and by rocking volumetric flask internal paint is sufficiently mixed with high-concentration industrial alcohol；
（3）Detection one：Step（2）In qualification 1 and to be measured 1 in launch the silver ammino solutions of homogenous quantities respectively, silver is precipitated after reaction
White metal silver；
Detection two：Step（2）In qualification 2 and to be measured 2 solution pass through Hydrolysis of Chlorobenzene method：By solution and chlorine iron catalysis
Lower chloro obtains chlorobenzene, and chlorobenzene carries out catalyzing hydrolysis at high temperature under high pressure with sodium hydrate aqueous solution, generates sodium phenate, acidified
Obtain phenol；
（4）Experimental comparison one：Step（3）Cleaning silver white metal silver is precipitated in middle detection one, weighs respectively after cleaning-drying
It finally obtains as a result, being learnt by comparison：If the metal quality in qualification 1 is greater than or equal to the metal quality in be measured 1, then
Content of formaldehyde is less than or equal to content of formaldehyde in qualified paint in paint to be measured, then content of formaldehyde is qualified in paint to be measured, if
Metal quality in be measured 1 is more than the metal quality in qualification 1, then content of formaldehyde is more than formaldehyde in qualified paint in paint to be measured
Content, then content of formaldehyde is unqualified in paint to be measured；
Experimental comparison two：Step（3）Being compared as a result, phenol quality can be obtained for middle detection two, it is dry to carry out cleaning
It weighs to obtain as a result, learning by comparison after dry：If the phenol quality in qualification 2 is greater than or equal to the phenol matter in be measured 2
Amount, then benzene content is less than or equal to benzene content in qualified paint in paint to be measured, then benzene content is qualified in paint to be measured, if waiting for
Survey the phenol quality that the phenol quality in 2 is more than in qualification 2, then benzene content is more than benzene content in qualified paint in paint to be measured,
Then benzene content is unqualified in paint to be measured.
Preferably, step（2）Using method sampling is weighed in middle sampling process, first claim the weight of lower volumetric flask, then will paint
Go wherein to observe weight, if when preponderance using small wood pick paint reach matter it is quantitative until.
Preferably, step（4）In Experimental comparison's data be accurate to 0.01 gram, liquid wherein in cleaning process is using steaming
Distilled water.
Preferably, step（2）In industrial alcohol purity using the purity between 97%-99%.
Preferably, it keeps dry environment to carry out in entire detection process, and rubber is used at once after the completion in experimentation
Leather plug is sealed.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention with the paint after dilution by passing through classification, and the matter with the product progress solid amount of precipitation of qualification in the market
Amount size is compared, and finally ensures the formaldehyde of its paint to be measured and the Qualification of benzene content so that its whole process is not required to
Any sophisticated equipment is wanted, its testing cost is reduced and solves the problems, such as that its whole detection cost is excessively high.
Specific implementation mode
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment one：
Harmful substance contents detection method in a kind of paint, includes the following steps：
（1）Materials：Qualified painting and each portion of painting to be checked are purchased from the market；
（2）Dilution：By step（1）The painting of middle qualification and painting to be checked, in respectively take the productions of two parts of homogenous quantities
Product are respectively put into four volumetric flasks, and mark qualification 1, qualification 2 to be measured 1 and to be measured 2, reinject the high concentration of homogenous quantities
Industrial alcohol, and by rocking volumetric flask internal paint is sufficiently mixed with high-concentration industrial alcohol, it is adopted in sampling process
With method sampling is weighed, first claim the weight of lower volumetric flask, then go paint wherein to observe weight, if using small wood when preponderance
Stick pick paint reach matter it is quantitative until, industrial alcohol purity uses the purity between 97%-99%；
（3）Detection one：Step（2）In will launch the silver ammino solutions of homogenous quantities respectively in qualification 1 and to be measured 1, be precipitated after reaction
Silvery white metallic silver；
Its chemical equation is：
CH3CHO+2[Ag（NO3）2] OH-- heating water baths -- CH3COONH4+Ag+3NH3+H2O（Heating Water promotes reaction）
（4）Experimental comparison one：Step（3）Cleaning silver white metal silver is precipitated in middle detection one, weighs respectively after cleaning-drying
It finally obtains as a result, being learnt by comparison：If the metal quality in qualification 1 is greater than or equal to the metal quality in be measured 1, then
Content of formaldehyde is less than or equal to content of formaldehyde in qualified paint in paint to be measured, then content of formaldehyde is qualified in paint to be measured, if
Metal quality in be measured 1 is more than the metal quality in qualification 1, then content of formaldehyde is more than formaldehyde in qualified paint in paint to be measured
Content, then content of formaldehyde is unqualified in paint to be measured；
It keeps dry environment to carry out in entire detection process, and is filled at once with rubber skin after the completion in experimentation capable close
Envelope.
Embodiment two：
Harmful substance contents detection method in a kind of paint, includes the following steps：
（1）Materials：Qualified painting and each portion of painting to be checked are purchased from the market；
（2）Dilution：By step（1）The painting of middle qualification and painting to be checked, in respectively take the productions of two parts of homogenous quantities
Product are respectively put into four volumetric flasks, and mark qualification 1, qualification 2 to be measured 1 and to be measured 2, reinject the high concentration of homogenous quantities
Industrial alcohol, and by rocking volumetric flask internal paint is sufficiently mixed with high-concentration industrial alcohol, it is adopted in sampling process
With method sampling is weighed, first claim the weight of lower volumetric flask, then go paint wherein to observe weight, if using small wood when preponderance
Stick pick paint reach matter it is quantitative until, industrial alcohol purity uses the purity between 97%-99%；
（3）Detection two：Step（2）In qualification 2 and to be measured 2 solution pass through Hydrolysis of Chlorobenzene method：By solution and chlorine in iron
The lower chloro of catalysis obtains chlorobenzene, and chlorobenzene carries out catalyzing hydrolysis at high temperature under high pressure with sodium hydrate aqueous solution, generates sodium phenate, warp
Acidification obtains phenol；
Its chemical equation is：C6H6+Cl2--Fe--C6H5Cl+HCl（Fe is catalyst）
C6H5Cl+NaOH-- high temperature and high pressures -- C6H5OH+NaCl（The chlorine of chlorobenzene very torpescence, needs at high temperature under high pressure
It can smoothly hydrolyze）.
（4）Experimental comparison two：Step（3）Middle detection two is compared as a result, phenol quality can be obtained, to carry out
It weighs to obtain as a result, learning by comparison after cleaning-drying：If the phenol quality in qualification 2 is greater than or equal in be measured 2
Phenol quality, then benzene content is less than or equal to benzene content in qualified paint in paint to be measured, then benzene content is qualified in paint to be measured,
If the phenol quality in be measured 2 is more than the phenol quality in qualification 2, then benzene content is more than benzene in qualified paint in paint to be measured
Content, then benzene content is unqualified in paint to be measured, and Experimental comparison's data are accurate to 0.01 gram, and the wherein liquid in cleaning process is adopted
Use distilled water.
It keeps dry environment to carry out in entire detection process, and row is filled in rubber skin at once after the completion in experimentation
Sealing.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. harmful substance contents detection method in a kind of paint, it is characterised in that：Include the following steps：
（1）Materials：Qualified painting and each portion of painting to be checked are purchased from the market；
（2）Dilution：By step（1）The painting of middle qualification and painting to be checked, in respectively take the productions of two parts of homogenous quantities
Product are respectively put into four volumetric flasks, and mark qualification 1, qualification 2 to be measured 1 and to be measured 2, reinject the high concentration of homogenous quantities
Industrial alcohol, and by rocking volumetric flask internal paint is sufficiently mixed with high-concentration industrial alcohol；
（3）Detection one：Step（2）In qualification 1 and to be measured 1 in launch the silver ammino solutions of homogenous quantities respectively, silver is precipitated after reaction
White metal silver；
Detection two：Step（2）In qualification 2 and to be measured 2 solution pass through Hydrolysis of Chlorobenzene method：By solution and chlorine iron catalysis
Lower chloro obtains chlorobenzene, and chlorobenzene carries out catalyzing hydrolysis at high temperature under high pressure with sodium hydrate aqueous solution, generates sodium phenate, acidified
Obtain phenol；
（4）Experimental comparison one：Step（3）Cleaning silver white metal silver is precipitated in middle detection one, weighs respectively after cleaning-drying
It finally obtains as a result, being learnt by comparison：If the metal quality in qualification 1 is greater than or equal to the metal quality in be measured 1, then
Content of formaldehyde is less than or equal to content of formaldehyde in qualified paint in paint to be measured, then content of formaldehyde is qualified in paint to be measured, if
Metal quality in be measured 1 is more than the metal quality in qualification 1, then content of formaldehyde is more than formaldehyde in qualified paint in paint to be measured
Content, then content of formaldehyde is unqualified in paint to be measured；
Experimental comparison two：Step（3）Being compared as a result, phenol quality can be obtained for middle detection two, it is dry to carry out cleaning
It weighs to obtain as a result, learning by comparison after dry：If the phenol quality in qualification 2 is greater than or equal to the phenol matter in be measured 2
Amount, then benzene content is less than or equal to benzene content in qualified paint in paint to be measured, then benzene content is qualified in paint to be measured, if waiting for
Survey the phenol quality that the phenol quality in 2 is more than in qualification 2, then benzene content is more than benzene content in qualified paint in paint to be measured,
Then benzene content is unqualified in paint to be measured.
2. harmful substance contents detection method in a kind of paint according to claim 1, it is characterised in that：Step
（2）Using method sampling is weighed in middle sampling process, first claim the weight of lower volumetric flask, then goes paint wherein to observe weight, if
When preponderance using small wood pick paint reach matter it is quantitative until.
3. harmful substance contents detection method in a kind of paint according to claim 1, it is characterised in that：Step
（4）In Experimental comparison's data be accurate to 0.01 gram, wherein the liquid in cleaning process uses distilled water.
4. harmful substance contents detection method in a kind of paint according to claim 1, it is characterised in that：Step
（2）In industrial alcohol purity using the purity between 97%-99%.
5. harmful substance contents detection method in a kind of paint according to claim 1, it is characterised in that：Entire inspection
It keeps dry environment to carry out during surveying, and is sealed at once with rubber skin plug after the completion in experimentation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810774622.8A CN108680457A (en) | 2018-07-16 | 2018-07-16 | Harmful substance contents detection method in a kind of paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810774622.8A CN108680457A (en) | 2018-07-16 | 2018-07-16 | Harmful substance contents detection method in a kind of paint |
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| Publication Number | Publication Date |
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| CN108680457A true CN108680457A (en) | 2018-10-19 |
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ID=63814069
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810774622.8A Pending CN108680457A (en) | 2018-07-16 | 2018-07-16 | Harmful substance contents detection method in a kind of paint |
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Cited By (2)
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| CN109813624A (en) * | 2019-01-04 | 2019-05-28 | 通标标准技术服务（天津）有限公司 | The detection method of the content of formaldehyde and benzene in paint |
| CN109991113A (en) * | 2019-03-12 | 2019-07-09 | 泰兴金江化学工业有限公司 | Rapid detection method for quality of n-butyl acetate |
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Address after: 528500 Cangjiang Creative Industrial Park 851 Gaoming Avenue, Gaoming District, Foshan City, Guangdong Province Applicant after: Foshan quifeng Business Consulting Service Co., Ltd. Address before: 528500 Huiyuan Haoting 13-2-202, 668 Taihua Road, Hecheng Street, Gaoming District, Foshan City, Guangdong Province Applicant before: Foshan quifeng Business Consulting Service Co., Ltd. |
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Application publication date: 20181019 |