CN107219309A - Expandable polystyrene risk assessment method - Google Patents
Expandable polystyrene risk assessment method Download PDFInfo
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- CN107219309A CN107219309A CN201610164047.0A CN201610164047A CN107219309A CN 107219309 A CN107219309 A CN 107219309A CN 201610164047 A CN201610164047 A CN 201610164047A CN 107219309 A CN107219309 A CN 107219309A
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- expandable polystyrene
- risk assessment
- assessment method
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- measurement bottle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N2030/022—Column chromatography characterised by the kind of separation mechanism
- G01N2030/025—Gas chromatography
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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Abstract
The present invention relates to a kind of expandable polystyrene risk assessment method, the problem of mainly solving to there is no expandable polystyrene risk assessment method in the prior art.Testing sample is positioned in measurement bottle by the present invention by using a kind of expandable polystyrene risk assessment method, and is sealed, and sample size is reach measurement bottle product 30 40%；The measurement bottle that will be equipped with sample is placed in water bath with thermostatic control, it is 60 65 DEG C to set temperature, constant temperature 6~8 hours, then measurement bottle is taken out from water bath with thermostatic control, use total vapor concentration in the component of gas, the concentration of each component and each measurement bottle in chromatographic bottle, if the mixture vapor concentration of experiment is respectively less than 20% of the LEL equal to mixed vapour, then it is not belonging to expandable polystyrene, technical scheme that is on the contrary then being expandable polystyrene preferably solves above mentioned problem, available in expandable polystyrene risk assessment.
Description
Technical field
The present invention relates to a kind of expandable polystyrene risk assessment method.
Background technology
In recent years, developing rapidly with China's polystyrene industry, its production capacity and scale expand increasingly, in recent years,
Fired caused by expandable polystyrene also in rising trend.Expandable polystyrene contains the gas of small molecule, in high temperature
Under the conditions of may expand, inflammable vapour can be released, the great bodily injury to human body and environment, pentane can spread mixed with air after shape
Into volatile mixed gas.
At present, risk assessment both at home and abroad for polystyrene, mainly by testing solid combustibility, but polyphenyl second
Alkene particle can release inflammable vapour under the high temperature conditions, and its danger can not be tested and determined by simple solid combustibility.
Although expandable polystyrene is divided the miscellaneous dangerous cargo of class of class the 9th in some regulations, a kind of examination is not yet set up at present
Proved recipe method judges whether polystyrene has hair property, if the 9th miscellaneous dangerous cargo of class belonged in regulations, both at home and abroad also still
Do not set up to expandable polystyrene risk assessment method, it is impossible to which its danger is estimated.
The present invention targetedly solves the problem.
The content of the invention
The technical problems to be solved by the invention are to there is no asking for expandable polystyrene risk assessment method in the prior art
There is provided a kind of expandable polystyrene risk assessment method for topic.
To solve the above problems, the technical solution adopted by the present invention is as follows：A kind of expandable polystyrene risk assessment method,
Testing sample is positioned in measurement bottle, and sealed, sample size is the 30-40% for reaching measurement bottle product；It will be equipped with sample
The measurement bottle of product is placed in water bath with thermostatic control, and it is 60~65 DEG C to set temperature, constant temperature 6~8 hours, then will measure bottle from constant temperature
Take out, always steamed in bottle using the component of gas, the concentration of each component and each measure in chromatographic bottle in water-bath
Gas concentration, if the mixture vapor concentration of experiment is respectively less than 20% of the LEL equal to mixed vapour, being not belonging to can
Hair property polystyrene, it is on the contrary then be expandable polystyrene.
In above-mentioned technical proposal, it is preferable that for the accuracy of result of the test, the test of expandable polystyrene risk assessment
Three groups of progress simultaneously should be taken.
In above-mentioned technical proposal, it is preferable that using the LEL of explosion limit instrument test mixing steam, if it is known that each group
The LEL divided, obtains the LEL of mixed vapour by way of calculating.
In above-mentioned technical proposal, it is preferable that measurement bottle is vial.
The present invention is by the way that expandable polystyrene is placed in sealed glass container, and when placing certain at a certain temperature
Between after determine sample in glass container and volatilize the concentration and property of steam and determine whether to reach the degree of danger, if divide
For dangerous cargo, preferable technique effect is achieved.
Below by embodiment, the invention will be further elaborated, but is not limited only to the present embodiment.
Embodiment
【Embodiment 1】
The present invention provides a kind of expandable polystyrene risk assessment method, and testing sample is positioned in measurement bottle, and close
Envelope, sample volume is reach measurement bottle product 30%；The measurement bottle that will be equipped with sample is placed in water bath with thermostatic control, sets temperature
For 60 DEG C, then constant temperature 8 hours take out measurement bottle from water bath with thermostatic control, uses gas in chromatographic bottle
Total vapor concentration in component, the concentration of each component and each measurement bottle, if the mixture vapor concentration of experiment is respectively less than
In the 20% of the LEL of mixed vapour, then expandable polystyrene is not belonging to, it is on the contrary then be expandable polystyrene.
Comprise the following steps that：
(1) sample of business form is taken, is positioned in 100mL vials, volume is the half for reaching vial volume,
Closed with rubber stopper.Same sample prepares three groups；
(2) bath temperature is set to be 60 DEG C, the three groups of vials that will be equipped with sample are placed in water-bath, constant temperature 8 hours；
Vial is taken out from water-bath after terminating within (3) 8 hours, the component of gas, each component in chromatographic bottle is used
Concentration and each bottle in total vapor concentration；
(4) using the LEL of explosion limit instrument test mixing steam, if it is known that the LEL of each component, can pass through
The mode of calculating obtains the LEL of mixed vapour.
Explosion limit method of testing：
1. explosion limit instrument power settings test temperature is opened, is vacuumized when temperature is close to predetermined temperature；
2. valve, pressurize 10 minutes, if pressure rise are closed after vacuum is taken out<1mbar then can be with sample introduction；
3. injected sample is stablized 2 minutes untill the sample partial pressure calculated and allows sample fully to vaporize；
4. the air partial pressure calculated is poured, magnetic stirring is opened and is sufficiently mixed；
5. properly protect measure, opens camera record phenomenon, igniting；
6. it is compared by ASTM E681 flame decision method；
7. exhaust gas evacuation, is exploded ball with air douche；
8. infinitely approach after the limit with ASTM E681 provide method take desired value, calculate explosion limit.
(5) if the vapor concentration of three groups of experiments is respectively less than 20% equal to LEL, expandable polystyrene is not belonging to,
It is on the contrary then for expandable polystyrene.
【Embodiment 2】
According to the condition and step described in embodiment 1, simply sample volume is reach vial volume 40%, bath temperature
For 60 DEG C, constant temperature 8 hours.As a result be the same as Example 1.
【Embodiment 3】
According to the condition and step described in embodiment 1, simply sample volume is reach vial volume 35%, bath temperature
For 65 DEG C, constant temperature 6 hours.As a result be the same as Example 1.
Claims (4)
1. a kind of expandable polystyrene risk assessment method, testing sample is positioned in measurement bottle, and is sealed, sample number
Measure to reach the 30-40% of measurement bottle product；The measurement bottle that will be equipped with sample is placed in water bath with thermostatic control, and setting temperature is
60-65 DEG C, then constant temperature 6-8 hours take out measurement bottle from water bath with thermostatic control, uses gas in chromatographic bottle
Total vapor concentration in the component of body, the concentration of each component and each measurement bottle, if the mixture vapor concentration of experiment is small
In 20% of the LEL equal to mixed vapour, then expandable polystyrene is not belonging to, it is on the contrary then be expandable polystyrene.
2. expandable polystyrene risk assessment method according to claim 1, it is characterised in that for the standard of result of the test
True property, expandable polystyrene risk assessment test should take at least three groups progress simultaneously.
3. expandable polystyrene risk assessment method according to claim 1, it is characterised in that surveyed using explosion limit instrument
The LEL of mixed vapour is tried, if it is known that the LEL of each component, obtains the quick-fried of mixed vapour by way of calculating
Fried lower limit.
4. expandable polystyrene risk assessment method according to claim 1, it is characterised in that measurement bottle is vial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610164047.0A CN107219309A (en) | 2016-03-22 | 2016-03-22 | Expandable polystyrene risk assessment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610164047.0A CN107219309A (en) | 2016-03-22 | 2016-03-22 | Expandable polystyrene risk assessment method |
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| Publication Number | Publication Date |
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| CN107219309A true CN107219309A (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610164047.0A Pending CN107219309A (en) | 2016-03-22 | 2016-03-22 | Expandable polystyrene risk assessment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109669029A (en) * | 2017-10-17 | 2019-04-23 | 国家安全生产监督管理总局化学品登记中心 | Polystyrene expandability test method |
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| JPH05293328A (en) * | 1992-04-17 | 1993-11-09 | Nitto Denko Corp | Treatment of air containing combustible organic vapor |
| CN2466646Y (en) * | 2001-02-27 | 2001-12-19 | 东北大学 | High-temp. combustible vapor explosivity determining device |
| JP2011026506A (en) * | 2009-07-28 | 2011-02-10 | Sekisui Plastics Co Ltd | Low volatile expandable polystyrene-based resin particle, manufacturing method therefor, low volatile polystyrene-based resin pre-expanded particle, and low volatile polystyrene-based resin expansion molded article |
| CN103196778A (en) * | 2013-03-07 | 2013-07-10 | 常州大学 | Determination method and apparatus of liquid hydrocarbon evaporation capacity and diffusion concentration of vapor cloud |
| CN104090089A (en) * | 2014-07-03 | 2014-10-08 | 中国人民解放军后勤工程学院 | Grading early warning method of oil gas hazard source of oil house in cave |
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2016
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|---|---|---|---|---|
| JPH05293328A (en) * | 1992-04-17 | 1993-11-09 | Nitto Denko Corp | Treatment of air containing combustible organic vapor |
| CN2466646Y (en) * | 2001-02-27 | 2001-12-19 | 东北大学 | High-temp. combustible vapor explosivity determining device |
| JP2011026506A (en) * | 2009-07-28 | 2011-02-10 | Sekisui Plastics Co Ltd | Low volatile expandable polystyrene-based resin particle, manufacturing method therefor, low volatile polystyrene-based resin pre-expanded particle, and low volatile polystyrene-based resin expansion molded article |
| CN103196778A (en) * | 2013-03-07 | 2013-07-10 | 常州大学 | Determination method and apparatus of liquid hydrocarbon evaporation capacity and diffusion concentration of vapor cloud |
| CN104090089A (en) * | 2014-07-03 | 2014-10-08 | 中国人民解放军后勤工程学院 | Grading early warning method of oil gas hazard source of oil house in cave |
| CN104698148A (en) * | 2015-02-13 | 2015-06-10 | 威特龙消防安全集团股份公司 | Oil and gas security monitoring control method in restricted space |
Non-Patent Citations (4)
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| NOVA CHEMICALS CORPORATION: "可发泡聚苯乙烯 贮存与装卸安全指南", 《可发泡聚苯乙烯 贮存与装卸安全指南》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109669029A (en) * | 2017-10-17 | 2019-04-23 | 国家安全生产监督管理总局化学品登记中心 | Polystyrene expandability test method |
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Application publication date: 20170929 |