CN103196787A - Method for testing density of thin film - Google Patents

Method for testing density of thin film Download PDF

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Publication number
CN103196787A
CN103196787A CN2013100970037A CN201310097003A CN103196787A CN 103196787 A CN103196787 A CN 103196787A CN 2013100970037 A CN2013100970037 A CN 2013100970037A CN 201310097003 A CN201310097003 A CN 201310097003A CN 103196787 A CN103196787 A CN 103196787A
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Prior art keywords
film
density
maceration extract
gram
unit
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CN2013100970037A
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Chinese (zh)
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钟勤
吴海娜
姚磊
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SHANGHAI PLASTIC INST
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SHANGHAI PLASTIC INST
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Priority to CN2013100970037A priority Critical patent/CN103196787A/en
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Abstract

The invention relates to a method for testing the density of a thin film. The method comprises the following steps of: threading a metal wire through the thin film, weighting the thin film in air, and coating wetting agents on two surfaces of the thin film; when the density of the thin film is greater than that of an impregnating solution, impregnating the thin film through which the metal wire is threaded into a beaker containing the impregnating solution, and weighting the thin film in the impregnating solution by a balance; when the density of the thin film is smaller than that of the impregnating solution, hanging a counter weight on the metal wire so as to sink the metal wire along with the thin film together into a liquid level, and weighting the thin film in the impregnating solution by the balance; and computing the density of the thin film according to a formula. By using the method, the density of the thin film can be easily and accurately measured.

Description

A kind of method of testing of density of film
Technical field
The present invention relates to a kind of density measurement method, relate in particular to a kind of method of testing of density of film.
Background technology
At the trial, because the not water wettability of fluoroplastic can be brought airborne gas into simultaneously when sample is put into maceration extract, form bubble at specimen surface; In order to solve the problem of bubble, adopt usually in maceration extract, to add wetting agent.An amount of wetting agent can be got rid of most bubbles of maceration extract and specimen surface, is present in specimen surface but still have a small amount of bubble.Because the quality of film sample is less, trickle bubble all will directly influence the correctness of density of film test value.
After fluorine plastic film was carried out multiple batches of parallel experiment, what obtain the results are shown in Table 1.
Table 1 measurement unit: g/cm 3
Figure 401270DEST_PATH_IMAGE001
Annotate: " do not add " expression in the table and " do not add wetting agent ", " dropping " expression " drips wetting agent " in the maceration extract.
The extreme difference of test findings and standard deviation are bigger as can be seen from the above table, show that the data dispersiveness is bigger.
Summary of the invention
The object of the present invention is to provide a kind of method of testing of density of film, described method can be simple, fast, measures the density of fluorine plastic film accurately.
The method of testing of the density of film that the present invention proposes, concrete steps are as follows:
The tinsel that diameter is not more than 0.5mm passes weight less than the film of 1.0 grams, takes by weighing in air and is installed with film quality wiry, and the balance precision is not less than 0.1mg, then at film coated on both sides wetting agent;
When density of film during greater than maceration extract density, be equipped with in the beaker of maceration extract being installed with film immersion wiry, the temperature of control maceration extract is 23 ℃ ± 2 ℃, takes by weighing at balance and is installed with the quality of film wiry in maceration extract, calculates the density of film according to formula (1).
Figure 938430DEST_PATH_IMAGE002
………………………………………………(1)
Figure 592528DEST_PATH_IMAGE003
The density of maceration extract in the time of-23 ℃ ± 2 ℃, unit is every cubic centimetre of (g/cm of gram 3).
The density of film in the time of-23 ℃ ± 2 ℃, unit is every cubic centimetre of (g/cm of gram 3);
Figure 711586DEST_PATH_IMAGE005
-being installed with the aerial quality of film wiry, unit is gram (g);
Figure 798359DEST_PATH_IMAGE006
-being installed with the quality of film wiry in maceration extract, unit is gram (g);
When density of film during less than maceration extract density, hang on the tinsel with weight, immerse in the maceration extract with film, take by weighing its quality in maceration extract at balance.Calculate the density of film according to formula (2).
Figure 302153DEST_PATH_IMAGE007
………………………………………………(2)
Figure 292237DEST_PATH_IMAGE003
The density of maceration extract in the time of-23 ℃ ± 2 ℃, unit is every cubic centimetre of (g/cm of gram 3);
The density of film in the time of-23 ℃ ± 2 ℃, unit is every cubic centimetre of (g/cm of gram 3);
Figure 102247DEST_PATH_IMAGE005
-being installed with the aerial quality of film wiry, unit is gram (g);
Figure 157534DEST_PATH_IMAGE006
-being installed with film wiry and the gross mass of weight in maceration extract, unit is gram (g);
Figure 985813DEST_PATH_IMAGE008
The quality of-weight in maceration extract, unit is gram (g).
Among the present invention, described film is fluoroplastic film.
Among the present invention, described wetting agent be in sulfurized oil, soap, soybean lecithin, thio-alcohol or the mercaptan acetals etc. any.
Among the present invention, described maceration extract is water recently distilled.
Beneficial effect of the present invention is: the density of measuring the film series products simply, fast, accurately.
With said method fluorine plastic film is carried out multiple batches of parallel experiment again, what obtain the results are shown in Table 2.
Table 2 measurement unit: g/cm 3
Specimen coding Polytetrafluoroethylene film Polyfluorinated ethylene membrane Poly-perfluoro alkoxy film
1 2.146 2.142 2.155
2 2.156 2.148 2.164
3 2.175 2.159 2.178
4 2.151 2.164 2.146
5 2.167 2.176 2.166
6 2.155 2.136 2.142
7 2.185 2.153 2.153
8 2.165 2.162 2.150
9 2.202 2.157 2.162
10 2.186 2.170 2.143
Maximal value 2.202 2.176 2.178
Minimum value 2.146 2.136 2.138
Mean value 2.169 2.157 2.156
Extreme difference 0.056 0.040 0.040
Standard deviation 0.0180 0.0123 0.0115
From test figure, the extreme difference and the standard deviation that add the data that wetting agent obtains with coating method are less, show that the data dispersiveness is less.
Embodiment
Below in conjunction with case study on implementation the present invention is described in further detail, but the present invention is not limited only to following embodiment.
Embodiment 1:
Be that the copper wire of 0.075mm passes the polytetrafluoroethylene film sample with diameter, taking by weighing its quality in air is 0.2196g.At film coated on both sides wetting agent, the polytetrafluoroethylene film sample immersion that is installed with copper wire is equipped with in the beaker of distilled water then, the density of distilled water is 0.9976g/cm 3, water temperature is 23 ℃, taking by weighing its quality in distilled water at balance is 0.1183g, according to formula , the density that calculates polytetrafluoroethylene film is 2.163g/cm 3
Embodiment 2:
Be that the copper wire of 0.075mm passes the expanded polytetrafluoroethylsealing film sample with diameter, taking by weighing its quality in air is 0.1206 gram, then at film coated on both sides wetting agent.Hang on the copper wire with weight, immerse with the expanded polytetrafluoroethylsealing film sample, claim to such an extent that weight, copper wire and the expanded polytetrafluoroethylsealing gross mass in water is 0.6394g, the density of distilled water is 0.9976g/cm 3, water temperature is 23 ℃, taking by weighing its quality in distilled water at balance is 0.6100g.According to formula
Figure 516337DEST_PATH_IMAGE007
, the density that calculates the expanded polytetrafluoroethylsealing film is 0.802g/cm 3

Claims (4)

1. the method for testing of a density of film is characterized in that concrete steps are as follows:
The tinsel that diameter is not more than 0.5mm passes weight less than the film of 1.0 grams, takes by weighing in air and is installed with film quality wiry, and the balance precision is not less than 0.1mg, then at film coated on both sides wetting agent;
When density of film during greater than maceration extract density, be equipped with in the beaker of maceration extract being installed with film immersion wiry, the temperature of control maceration extract is 23 ℃ ± 2 ℃, takes by weighing at balance and is installed with the quality of film wiry in maceration extract, calculates the density of film according to formula (1);
Figure 2013100970037100001DEST_PATH_IMAGE002
………………………………………………(1)
Figure 2013100970037100001DEST_PATH_IMAGE004
The density of maceration extract in the time of-23 ℃ ± 2 ℃, unit is every cubic centimetre of (g/cm of gram 3);
Figure DEST_PATH_IMAGE006
The density of film in the time of-23 ℃ ± 2 ℃, unit is every cubic centimetre of (g/cm of gram 3);
Figure DEST_PATH_IMAGE008
-being installed with the aerial quality of film wiry, unit is gram (g);
Figure DEST_PATH_IMAGE010
-being installed with the quality of film wiry in maceration extract, unit is gram (g);
When density of film during less than maceration extract density, hang on the tinsel with weight, immerse in the maceration extract with film, take by weighing its quality in maceration extract at balance; Calculate the density of film according to formula (2);
Figure DEST_PATH_IMAGE012
………………………………………………(2)
The density of maceration extract in the time of-23 ℃ ± 2 ℃, unit is every cubic centimetre of (g/cm of gram 3);
The density of film in the time of-23 ℃ ± 2 ℃, unit is every cubic centimetre of (g/cm of gram 3);
Figure 802233DEST_PATH_IMAGE008
-being installed with the aerial quality of film wiry, unit is gram (g);
Figure 943364DEST_PATH_IMAGE010
-being installed with the quality of film wiry in maceration extract, unit is gram (g);
Figure DEST_PATH_IMAGE014
The quality of-weight in maceration extract, unit is gram (g).
2. the method for testing of density of film according to claim 1 is characterized in that described film is fluoroplastic film.
3. the method for testing of density of film according to claim 1, it is characterized in that described wetting agent be in sulfurized oil, soap, soybean lecithin, thio-alcohol or the mercaptan acetals any.
4. the method for testing of density of film according to claim 1 is characterized in that described maceration extract is water recently distilled.
CN2013100970037A 2013-03-25 2013-03-25 Method for testing density of thin film Pending CN103196787A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104614283A (en) * 2015-01-05 2015-05-13 上海应用技术学院 Analysis method for corresponding phase change in thermal treatment machining process of metal material
CN105806741A (en) * 2014-12-31 2016-07-27 郑州旭飞光电科技有限公司 Ultra-thin glass density testing device and testing method
CN106634421A (en) * 2016-12-13 2017-05-10 苏州赛斯德工程设备有限公司 Water-based epoxy paint for floor and production technique thereof
CN112394005A (en) * 2020-11-09 2021-02-23 中国空间技术研究院 Device and method suitable for testing density of solid and liquid

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410914A (en) * 1992-11-02 1995-05-02 Research Development Corporation Of Japan Measuring device for density of liquid or high-temperature melt without influence of surface tension
US6443007B1 (en) * 1999-04-27 2002-09-03 Mettler-Toledo Gmbh Fluid for measuring volume, density and related properties of solid bodies
CN101726450A (en) * 2009-12-29 2010-06-09 江苏大学 Method for rapidly measuring density of solid insusceptible to absorbing water

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410914A (en) * 1992-11-02 1995-05-02 Research Development Corporation Of Japan Measuring device for density of liquid or high-temperature melt without influence of surface tension
US6443007B1 (en) * 1999-04-27 2002-09-03 Mettler-Toledo Gmbh Fluid for measuring volume, density and related properties of solid bodies
CN101726450A (en) * 2009-12-29 2010-06-09 江苏大学 Method for rapidly measuring density of solid insusceptible to absorbing water

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
中国国家标准化管理委员会: "塑料 非泡沫塑料密度的测定 第1部分：浸渍法、液体比重瓶法和滴定法", 《中华人民共和国国家标准GB/T 1033.1-2008》, 4 August 2008 (2008-08-04) *
徐燕莉: "《表面活性剂的功能》", 31 December 2000, article "润湿剂" *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105806741A (en) * 2014-12-31 2016-07-27 郑州旭飞光电科技有限公司 Ultra-thin glass density testing device and testing method
CN104614283A (en) * 2015-01-05 2015-05-13 上海应用技术学院 Analysis method for corresponding phase change in thermal treatment machining process of metal material
CN106634421A (en) * 2016-12-13 2017-05-10 苏州赛斯德工程设备有限公司 Water-based epoxy paint for floor and production technique thereof
CN112394005A (en) * 2020-11-09 2021-02-23 中国空间技术研究院 Device and method suitable for testing density of solid and liquid

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Application publication date: 20130710