CN112697890A - Characterization method of VOC (volatile organic compound) parameter of high polymer material - Google Patents

Characterization method of VOC (volatile organic compound) parameter of high polymer material Download PDF

Info

Publication number
CN112697890A
CN112697890A CN201911006729.9A CN201911006729A CN112697890A CN 112697890 A CN112697890 A CN 112697890A CN 201911006729 A CN201911006729 A CN 201911006729A CN 112697890 A CN112697890 A CN 112697890A
Authority
CN
China
Prior art keywords
voc
sample
gas
polymer material
headspace bottle
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
Application number
CN201911006729.9A
Other languages
Chinese (zh)
Inventor
康鹏
蔡涛
石胜鹏
金滟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinopec Beijing Research Institute of Chemical Industry
China Petroleum and Chemical Corp
Original Assignee
Sinopec Beijing Research Institute of Chemical Industry
China Petroleum and Chemical Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sinopec Beijing Research Institute of Chemical Industry, China Petroleum and Chemical Corp filed Critical Sinopec Beijing Research Institute of Chemical Industry
Priority to CN201911006729.9A priority Critical patent/CN112697890A/en
Publication of CN112697890A publication Critical patent/CN112697890A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • G01N30/04—Preparation or injection of sample to be analysed
    • G01N30/06—Preparation
    • 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
    • G01N30/04—Preparation or injection of sample to be analysed
    • G01N30/16—Injection
    • 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
    • G01N30/04—Preparation or injection of sample to be analysed
    • G01N30/24—Automatic injection systems

Landscapes

  • Physics & Mathematics (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)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention belongs to the field of high polymer materials, and relates to a characterization method of VOC (volatile organic compound) parameters of a high polymer material. The method comprises the following steps: s1, filling a high polymer material sample to be detected into a headspace bottle and sealing; s2, heating the headspace bottle sealed in the step S1 to enable VOC in the sample to reach gas-solid distribution balance in the headspace bottle; s3, extracting the gas phase in the headspace bottle after the heating treatment in the step S2, and carrying out GC-FID detection to obtain a chromatographic peak area A; s4, obtaining a gas-solid ratio beta; s5, repeating the steps S1-S4 to obtain the chromatographic peak areas A and the gas-solid ratios beta of a plurality of groups of samples with different masses, respectively drawing by taking the gas-solid ratios beta and the reciprocal 1/A of the chromatographic peak areas as horizontal and vertical coordinates, and performing linear fitting to obtain a slope k and an intercept b; and S6, calculating the VOC equilibrium distribution coefficient K of the sample as b/K. The method has the advantages of simple steps, strong operability, high test accuracy and precision, and can be widely applied to the existing high polymer materials.

Description

Characterization method of VOC (volatile organic compound) parameter of high polymer material
Technical Field
The invention belongs to the field of high polymer materials, and particularly relates to a characterization method of VOC (volatile organic compound) parameters of a high polymer material.
Background
With the development and progress of social economy, the environmental awareness of people is continuously enhanced, and the quality problem of air in the vehicle is highly valued by people. GB/T27630-2011 'evaluation guide for air quality in passenger vehicles' is jointly issued by Ministry of environmental protection and State quality inspection, and at present, the standard is changed from a recommended standard to a mandatory standard, so that the improvement of the air quality in vehicles becomes a great trend. A major factor causing air pollution in vehicles is Volatile Organic Compounds (VOCs). The world health organization defines VOCs as volatile organic compounds between 50-260 ℃. The influence factors of the VOC release in the automobile are more, wherein the VOC released by the high polymer material for the automobile is the main source of the VOC in the automobile. The vehicle high polymer material is different from metal and inorganic non-metal materials, and VOC is released to different degrees in the synthesis, processing and use processes. Because of the large number of types of VOC and the problem of dynamic release, the accurate characterization of VOC in the material is a key prerequisite for reducing the content of VOC in the vehicle and improving the air quality.
At present, common methods for detecting the VOC of the high polymer materials for the vehicles are mainly divided into European and American series vehicle execution standards and Japanese series vehicle execution standards. The standards implemented by the Oldham are mainly VDA277(HS-FID) and VDA288 (TDS-GC/MS). Common sample pretreatment methods mainly include a detection chamber method, a headspace method and a thermal analysis method. The Japanese is mainly based on a sampling bag method. And simulating the use condition of the sample in the vehicle, and desorbing the sample after adsorbing the sample by using an adsorption tube to test the type and content of the VOC. The method simulates the VOC release condition under certain conditions, and then detects the VOC released in the closed space, thereby indirectly representing the content of the VOC in the material. It is well known that the concentration of VOCs in a closed space gradually equilibrates between the sample and the closed space after a certain temperature and time. At this time, there is a balanced distribution of VOC between the enclosed space and the sample. The ratio of the concentration of VOC in the material to the concentration in the enclosed space becomes the equilibrium partition coefficient K of VOC. The equilibrium partition coefficient K is one of the key parameters for VOC release in a material. Generally, the higher the K value is, the higher the content of VOC in the material is, the lower the released content is, and the VOC is difficult to release; the smaller the K value is, the lower the content of VOC in the material is, the higher the content of VOC is released, and the VOC is easy to release. The K value is one of the key parameters of VOC release in the material, can directly reflect the distribution condition of VOC between gas and solid, and has important theoretical and practical values. However, at present, none of the detection methods for VOC in the automotive polymer material involve the characterization of the key parameter, so how to characterize the gas-solid equilibrium distribution coefficient K of VOC in the automotive polymer material has become an important component for accurately characterizing the release of VOC.
Furthermore, for the same type of material, the concentration ratio of VOC in the sample and the enclosed space is usually a fixed value, and the initial concentration of VOC in the sample can be indirectly characterized by measuring the concentration of VOC in the enclosed space. However, if the structural difference between the samples is large, the concentration ratio of the VOC in the sample and the closed space is changed, and it is obviously incorrect to characterize the initial concentration of the VOC in the sample by the concentration of the VOC in the closed space. Therefore, how to directly characterize the initial concentration of VOC of samples with large differences in material structures is important.
At present, no method can characterize the VOC related parameters of the high polymer materials.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention is directed to provide a method for characterizing VOC parameters of a polymer material, which can characterize both the equilibrium partition coefficient of VOC in the polymer material and the initial concentration of VOC in a sample. The method has the advantages of simple steps, strong operability, high testing accuracy and high precision, and can be widely applied to the existing high polymer materials, particularly the high polymer materials for vehicles.
The invention provides a method for characterizing VOC parameters of a high polymer material, which comprises the following steps:
s1, filling a high polymer material sample to be detected into a headspace bottle and sealing;
s2, heating the headspace bottle sealed in the step S1 to enable VOC in the sample to reach gas-solid distribution balance in the headspace bottle;
s3, extracting the gas phase in the headspace bottle after the heating treatment in the step S2, and carrying out GC-FID detection to obtain a chromatographic peak area A;
s4, obtaining a gas-solid ratio beta, wherein the gas-solid ratio beta is the volume ratio of gas in the headspace bottle to a sample;
s5, repeating the steps S1-S4 to obtain chromatographic peak areas A and gas-solid ratios beta of a plurality of groups of high polymer material samples to be detected with different masses, respectively drawing by taking the gas-solid ratios beta and the reciprocal 1/A of the chromatographic peak areas as horizontal and vertical coordinates, and performing linear fitting to obtain a slope k and an intercept b;
s6, calculating the VOC balance distribution coefficient K of the sample by using the formula 1),
k ═ b/K equation 1).
Compared with the prior art, the invention has the following beneficial effects:
1. the method can complete the equilibrium distribution coefficient K of VOC and the initial concentration C of VOC by changing the quality of the sample on the basis of the existing VOC standard test0The method has the advantages of simple method, low cost and strong operability without additional testing instruments.
2. The method is obtained by mathematical fitting on the basis of VOC gas-solid balance, can avoid errors caused by human factors only by ensuring that the VOC of the sample reaches the gas-solid balance, and has high data accuracy and precision.
3. The method used in the invention can obtain the concentration C of VOC in the gas phase of the headspace bottlegWhile obtaining the equilibrium distribution coefficient K of VOC and the initial concentration C of VOC0And the method is convenient to be combined with the prior art to obtain accurate physical property parameters.
4. The method used by the invention has strong universality and is basically suitable for various existing high polymer materials for vehicles.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
Exemplary embodiments of the present invention will be described in more detail by referring to the accompanying drawings.
FIG. 1 is a graph of a linear fit in accordance with an embodiment of the present invention.
FIG. 2 is a graph of a linear fit in another embodiment of the present invention.
Detailed Description
The following describes in detail specific embodiments of the present invention. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The method for characterizing the VOC parameters of the high polymer material comprises the following steps:
s1, filling a high polymer material sample to be detected into a headspace bottle and sealing;
s2, heating the headspace bottle sealed in the step S1 to enable VOC in the sample to reach gas-solid distribution balance in the headspace bottle;
s3, extracting the gas phase in the headspace bottle after the heating treatment in the step S2, and carrying out GC-FID detection to obtain a chromatographic peak area A;
s4, obtaining a gas-solid ratio beta, wherein the gas-solid ratio beta is the volume ratio of gas in the headspace bottle to a sample;
s5, repeating the steps S1-S4 to obtain chromatographic peak areas A and gas-solid ratios beta of a plurality of groups of high polymer material samples to be detected with different masses, respectively drawing by taking the gas-solid ratios beta and the reciprocal 1/A of the chromatographic peak areas as horizontal and vertical coordinates, and performing linear fitting to obtain a slope k and an intercept b;
s6, calculating the VOC balance distribution coefficient K of the sample by using the formula 1),
k ═ b/K equation 1).
The principle of the invention is as follows: VOC in the sample reaches gas-solid balance in the headspace bottle, and the characteristic equation is as follows:
Cg＝C0/(K + β) equation 3)
CgIs the concentration of VOC in the gas phase after gas-solid equilibrium in the headspace bottle, C0The initial concentration of VOC in the sample, K is the gas-solid equilibrium distribution coefficient of VOC, and beta is the volume ratio of the gas in the headspace bottle to the sample.
Mathematically transforming equation 3) to obtain equation 4):
1/Cg＝β/C0+K/C0formula 4)
The area A of the chromatographic peak of the VOC is in proportion to CgThus, by varying β, and plotting 1/a and β, the slope and intercept of the fitted curve are obtained, and by mathematical calculations K-intercept/slope can be derived.
According to the method of the invention, the chromatographic peak area A of the VOC is detected by GC-FID, and the method can be specifically referred to a VDA277 standard method. CgCan be measured or calculated according to methods known in the art, e.g., TVOC measured according to VDA277 standard, which measures TVOC x sample mass/headspace volume as Cg。
The method of the present invention may also calculate an initial concentration of VOCs in the sample, in particular, the method further comprises: s7, calculating the initial concentration of VOC in the sample by using a formula 2);
C0＝Cg(K + beta) formula 2)
Wherein, C0Is the initial concentration of VOC, C, in the samplegThe concentration of VOC in gas phase after gas-solid equilibrium in the headspace bottle, K is the VOC equilibrium distribution coefficient, and beta is the volume ratio of gas to sample in the headspace bottle.
According to the method of the present invention, in order to obtain a more accurate detection result, preferably, step S1 further includes performing a pretreatment on the to-be-detected polymer material sample, where the pretreatment includes processing the sample into particles of 2-5 mm. Such as cropping.
In step S2 of the present invention, the gas-solid equilibrium distribution of VOCs in the sample in the headspace bottle can be controlled and confirmed according to a method known in the art, and generally, the conditions of the heat treatment in step S2 are controlled as follows: the temperature is 50-120 ℃, and the time is 2-48 h. The heating treatment can be performed by conventional heating equipment such as a headspace heater or an oven.
The method of the invention can be applied to any VOC-containing high polymer material, in particular to a high polymer material for vehicles. Specifically, the polymer material may be at least one of polypropylene, polyethylene, polystyrene, acrylonitrile-butadiene-styrene block copolymer, polycarbonate, polyurethane, polyvinyl chloride, nylon, and polyester for vehicles.
According to the method, more accurate test results can be obtained by controlling the gas-solid ratio beta within a certain range. Preferably, the test conditions are selected such that the gas-to-solid ratio β is in the range of 5 to 1500.
According to the method, the mass range of the high polymer material samples to be detected with different masses can be 0.01-3 g. The high molecular material samples to be tested with different masses are selected for subsequent fitting, so that a person skilled in the art can determine the number and mass distribution of the high molecular material samples to be tested with different masses according to the target, and generally, the number of the samples is preferably more than 5.
According to a specific embodiment of the present invention, in step S3, a gas phase headspace sample in a headspace bottle is injected, and then GC-FID detection is performed, wherein the headspace sample injection may be performed by a manual sample injection or an automatic sample injection by a headspace sample injector.
In step S1 of the present invention, the headspace bottle may be any conventional headspace bottle satisfying the above test conditions, preferably a headspace glass bottle resistant to at least 200 ℃, and the volume of the headspace bottle is sufficient for the reaction, which is not particularly limited in the present invention. The sealing of the headspace bottle may be achieved using a silicone rubber gasket.
The present invention will be further described with reference to the following examples, but the scope of the present invention is not limited to these examples.
In the following examples:
GC-FID detection was performed by GC-FID gas chromatography 7890B, produced by Agilent, USA.
The headspace bottle and the matched high-temperature-resistant silicon rubber cover are produced by Agilent, America, and the volume of the headspace bottle is 10 ml.
Example 1
This example is intended to illustrate the method for characterizing the VOC equilibrium partition coefficient of the polymeric material of the present invention. The high polymer material sample to be detected is polypropylene resin K9026 for vehicles (Yanshan petrochemical production).
Cutting PP granules into fine particles with the average particle size of 3mm, respectively weighing 0.05g, 0.10g, 0.20g, 0.50g and 1g of samples, filling the samples into a headspace bottle, sealing, heating at 120 ℃ for 5h, and then carrying out headspace sample injection GC-FID (according to VDA277 method, testing of organic volatile matters of non-metallic materials of automotive interiors) to obtain the peak area A of VOC. And calculating the gas-solid ratio beta according to the solid and gas consumption. Plotting 1/A and beta, linear fitting to obtain slope and intercept, and then using the ratio of intercept and slope to obtain the VOC equilibrium partition coefficient K. The specific test results are shown in table 1, and the linear fitting graph is shown in fig. 1.
Example 2
This example is provided to illustrate the characterization method of VOC equilibrium distribution coefficient of polymer material of the present invention. The high polymer material sample to be tested is a vehicle interior polypropylene/talcum powder (80/20) composite material (provided by Beijing chemical research institute).
Cutting the PP granules into fine particles with the average particle size of 3mm, respectively weighing 0.05g, 0.10g, 0.20g, 0.50g and 1g of samples, filling the samples into a headspace bottle, sealing, heating at 120 ℃ for 5h, and detecting by headspace sample injection GC-FID (according to a VDA277 method) to obtain the peak area A of VOC. And calculating the gas-solid ratio beta according to the solid and gas consumption. Plotting 1/A and beta, linear fitting to obtain slope and intercept, and then using the ratio of intercept and slope to obtain the VOC equilibrium partition coefficient K. The specific test results are shown in table 1, and the linear fitting graph is shown in fig. 2.
Example 3
This example is for explaining the initial VOC concentration C of the polymer material of the present invention0The characterization method of (1).
Substituting the VOC equilibrium distribution coefficient K obtained in example 1 into formula C0＝Cg(K + beta) to obtain the initial VOC concentration C of the sample of example 10. The specific calculation results are shown in table 1.
Example 4
This example is for explaining the polymer material of the present inventionInitial VOC concentration C of the feedstock0The characterization method of (1).
Substituting the VOC equilibrium distribution coefficient K value obtained in example 2 into formula C0＝Cg(K + beta) to obtain the initial VOC concentration C in the sample of example 20. The specific calculation results are shown in table 1.
TABLE 1
Figure BDA0002243003070000081
As can be seen from FIGS. 1 and 2, R of the fitted straight line2All are 0.99, the linear relation of each data point is better, and the equilibrium distribution coefficient K of the polyolefin resin K9026 is calculated to be 41, and the initial concentration C of VOC is calculated02377 μ gC/mL, in TVOC0Characterized by 2614 mu gC/g, the equilibrium partition coefficient K of the polypropylene composite material is 69, and the initial concentration C of VOC03299 μ gC/mL in TVOC0Characterized by 3299. mu. gC/g.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.

Claims (10)

1. A characterization method of VOC parameters of a high polymer material is characterized by comprising the following steps:
s1, filling a high polymer material sample to be detected into a headspace bottle and sealing;
s2, heating the headspace bottle sealed in the step S1 to enable VOC in the sample to reach gas-solid distribution balance in the headspace bottle;
s3, extracting the gas phase in the headspace bottle after the heating treatment in the step S2, and carrying out GC-FID detection to obtain a chromatographic peak area A;
s4, obtaining a gas-solid ratio beta, wherein the gas-solid ratio beta is the volume ratio of gas in the headspace bottle to a sample;
s5, repeating the steps S1-S4 to obtain chromatographic peak areas A and gas-solid ratios beta of a plurality of groups of high polymer material samples to be detected with different masses, respectively drawing by taking the gas-solid ratios beta and the reciprocal 1/A of the chromatographic peak areas as horizontal and vertical coordinates, and performing linear fitting to obtain a slope k and an intercept b;
s6, calculating the VOC balance distribution coefficient K of the sample by using the formula 1),
k ═ b/K equation 1).
2. The method for characterizing VOC parameters of polymeric materials in accordance with claim 1, wherein the method further comprises:
s7, calculating the initial concentration of VOC in the sample by using a formula 2);
C0＝Cg(K + beta) formula 2)
Wherein, C0Is the initial concentration of VOC, C, in the samplegThe concentration of VOC in gas phase after gas-solid equilibrium in the headspace bottle, K is the VOC equilibrium distribution coefficient, and beta is the volume ratio of gas to sample in the headspace bottle.
3. Method for characterizing VOC parameters of polymeric materials according to claim 2, wherein CgCalculated from the TVOC measured according to the VDA277 standard.
4. The characterization method of VOC parameters of polymer materials according to claim 1 or 2, wherein the step S1 further comprises pre-treating the polymer material sample to be tested, wherein the pre-treating comprises treating the sample into particles of 2-5 mm.
5. The method for characterizing VOC parameters of polymeric materials in accordance with claim 1 or 2, wherein the conditions of the heat treatment in step S2 include: the temperature is 50-120 ℃, and the time is 2-48 h.
6. The characterization method of polymer material VOC parameter according to claim 1 or 2, wherein the polymer material is a polymer material for vehicle; preferably, the polymer material is at least one of polypropylene, polyethylene, polystyrene, acrylonitrile-butadiene-styrene block copolymer, polycarbonate, polyurethane, polyvinyl chloride, nylon and polyester for vehicles.
7. A method for the characterization of a VOC parameter of a polymeric material according to claim 1 or 2, wherein the test conditions are selected such that the gas-to-solid ratio β is in the range of 5-1500.
8. The characterization method of VOC parameters of high polymer materials according to claim 1 or 2, wherein the mass range of the samples of the high polymer materials to be tested with different masses is 0.01-3 g.
9. The method for characterizing VOC parameters of high molecular materials according to claim 1 or 2, wherein in step S3, a gas phase headspace sample is injected from a headspace bottle, and then GC-FID detection is performed, wherein the headspace sample is injected by a manual sample injection or a headspace sample injector automatic sample injection.
10. The characterization method of VOC parameter of high molecular material according to claim 1 or 2, wherein in step S1, the headspace bottle is a headspace glass bottle resistant to at least 200 ℃, and the sealing is a silicone rubber sealing gasket.
CN201911006729.9A 2019-10-22 2019-10-22 Characterization method of VOC (volatile organic compound) parameter of high polymer material Pending CN112697890A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911006729.9A CN112697890A (en) 2019-10-22 2019-10-22 Characterization method of VOC (volatile organic compound) parameter of high polymer material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911006729.9A CN112697890A (en) 2019-10-22 2019-10-22 Characterization method of VOC (volatile organic compound) parameter of high polymer material

Publications (1)

Publication Number Publication Date
CN112697890A true CN112697890A (en) 2021-04-23

Family

ID=75504591

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911006729.9A Pending CN112697890A (en) 2019-10-22 2019-10-22 Characterization method of VOC (volatile organic compound) parameter of high polymer material

Country Status (1)

Country Link
CN (1) CN112697890A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102162812A (en) * 2010-12-23 2011-08-24 清华大学 Method and device for quickly measuring building material emission key parameter
CN110187025A (en) * 2019-05-29 2019-08-30 北京卡达克数据有限公司 It is a kind of car nonmetallic materials in VOC emission key parameter test method and device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102162812A (en) * 2010-12-23 2011-08-24 清华大学 Method and device for quickly measuring building material emission key parameter
CN110187025A (en) * 2019-05-29 2019-08-30 北京卡达克数据有限公司 It is a kind of car nonmetallic materials in VOC emission key parameter test method and device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
刘杨: "有机模拟物从食品包装纸传质到空气中迁移行为的研究", 《中国优秀硕士学位论文全文数据库（工程科技I辑）》, no. 5, 15 November 2007 (2007-11-15), pages 024 - 96 *
黄崇杏 等: "顶空气相色谱法测定包装纸中有机污染物在纸和空气间的分配系数", 《分析化学》, vol. 36, no. 10, 31 October 2008 (2008-10-31), pages 1396 - 1398 *

Similar Documents

Publication Publication Date Title
CN106950143A (en) A kind of measuring method of content of calcium carbonate in cigarette paper
Minelli et al. Modeling gas and vapor sorption in a polymer of intrinsic microporosity (PIM-1)
CN109358095B (en) Quantitative measurement method and system for gas concentration of each component of mixed gas
CN101876634A (en) Method for testing mixing amount of styrene-butadiene-styrene modified asphalt modifier
CN104267133A (en) Method for measuring adsorption isotherm of gas on surface of solid
CN105136682B (en) Arene content is quick in a kind of fuel oil, the new method of Accurate Determining
CN105758684A (en) Preparation method of moisture test sample and test method
CN113899823A (en) Rail vehicle product pleasure degree evaluation and prediction method
CN102565241B (en) Preparation method of gas sample in vinyl gas chromatography analysis of 110 methylvinyl silicone rubber
CN112697890A (en) Characterization method of VOC (volatile organic compound) parameter of high polymer material
CN102507773B (en) Method for selectively determining residual vinyl acetate in white latex for cigarette through static headspace gas and chromatography mass spectrometry
CN103528985B (en) Infrared spectrum determination method for bound styrene content in emulsion polymerized styrene-butadiene rubber
Pell et al. Quantitative infrared emission spectroscopy using multivariate calibration
CN106248612B (en) Method for measuring comonomer content in ethylene propylene butadiene terpolymer polypropylene
Reichle Jr et al. Vertical profiles of CO & CH4 in the lower and middle troposphere over the eastern United States January 1978
KR20160036536A (en) Performance Test Methods of Adsorbent for Indoor Air Radon Mitigation
CN106568867B (en) The quantitative approach of chain methylsiloxane in PDMS
Krishen Quatitative determination of natural rubber, styrene-butadiene rubber, and ethylene-propylene-terpolymer rubber in compounded cured stocks by pyrolysis-gas chromatography
CN111665214B (en) Method for measuring respective mixing amounts of SBS (styrene butadiene styrene) modifier and SBR (styrene butadiene rubber) modifier in modified asphalt
CN105021747A (en) Method for predicating diesel oil group composition by using nuclear magnetic resonance hydrogen spectrum
CN108195983B (en) Qualitative analysis method of silane coupling agent in rubber
CN106018685A (en) Feed moisture quick measuring method
CN101482499B (en) Detection method of BOPP film for cigarette
CN107402191A (en) A kind of oil product of gasoline quality determining method for evading disturbing factor
CN111624268A (en) Method for detecting peculiar smell compounds in textiles

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: 20210423

RJ01 Rejection of invention patent application after publication