CN108732108A - A kind of detection transparent polymer stretched film is orientated the device and method of equilibrium degree - Google Patents
A kind of detection transparent polymer stretched film is orientated the device and method of equilibrium degree Download PDFInfo
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Abstract
The present invention provides a kind of detection transparent polymer stretched films to be orientated the device of equilibrium degree and a kind of method that detection transparent polymer stretched film is orientated equilibrium degree.Described device includes light-emitting device, for providing white light；And detection device, the detection device include that the first polarizer and the second polarizer disposed in parallel, the detection device are located at light-emitting device top from bottom to top；Wherein, a polarizer swivel mount is set around the second polarizer, and for realizing the rotation of the second polarizer, when detection, the first polarizer is fixed, the second polarizer can rotate；When detection, transparent polymer stretched film to be detected is between first polarizer and the second polarizer.Described device has many advantages, such as small-sized, portable, qualitative detection, easy to operate；The method uses above-mentioned apparatus, simple, convenient to carry out.
Description
Technical field
The invention belongs to high molecular polymer detection device technical fields, and in particular to a kind of detection transparent polymer stretching
Film is orientated the device and method of equilibrium degree.
Background technology
Transparent polymer stretched film be usually used polyvinyl chloride, polyethylene, polypropylene, polyester, polyamide and other
Resin is orientated due to having to stretch through film made of uniaxial or biaxial stretching, greatly increases the mechanical property of film, carry
The high crystallinity of high polymer, improves its crystallinity under high-elastic state and makes crystallization imperceptibility, the transparency of film
It is greatly improved with barrier property.These characteristics make transparent polymer stretched film in fields such as food packaging, medicine, chemical industry
In be widely used.
The degree of orientation of transparent polymer stretched film is to characterize an important indicator of its performance, is the orientation journey of stretched film
A kind of module of degree.The degree of orientation, it includes that microcrystal edge is fine to generally refer to the various different structure units such as macromolecular or segment
Tie up the regularly arranged degree of axis；After having orientation, most molecule segments are directed toward the same direction, in that direction, polyphosphazene polymer
The macro property for closing object obviously has differences with other directions, and material is in anisotropic property.
Currently, about the report of simple tension rear film degree of orientation assay method, but for transparent polymer stretched film,
Especially biaxial stretching film, the orientation equilibrium degree after stretching, especially the orientation equilibrium degree of vertical and horizontal are an influences
The Specifeca tion speeification of stretched film, but yet there are no report about the measurement for being orientated equilibrium degree.
Invention content
In order to solve the problems in the existing technology, an object of the present invention is to provide a kind of detection transparent polymer
Stretched film is orientated the device of equilibrium degree, and described device has many advantages, such as small-sized, portable, qualitative detection, easy to operate.
The second object of the present invention is to provide a kind of method that detection transparent polymer stretched film is orientated equilibrium degree, the side
Method uses above-mentioned apparatus, simple, convenient to carry out.
Heretofore described " be orientated equilibrium degree " refers to that the degree of orientation of the different directions of polymer stretched film is (or different
The stretching ratio in direction；Wherein, stretching ratio refer to stretch after length and raw footage ratio) consistency, longitudinal direction can be passed through
Stretching ratio (RMD) and cross directional stretch multiplying power (RTD) ratio R (R=RMD/RTD) indicate.R values are closer to 1 (longitudinal stretching times
When rate is identical with cross directional stretch multiplying power, the ratio of the two is 1) then to indicate that the orientation equilibrium degree of polymer stretched film is better.
Device of the present invention and detection method can distinguish R values=0.6-1.5 and R values not in the range
(that is, R<0.6 or R>1.5) the orientation equilibrium degree of polymer stretched film.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of detection transparent polymer stretched film is orientated the device of equilibrium degree, and described device includes light-emitting device, for carrying
For white light；And detection device, the detection device include that the first polarizer disposed in parallel and the second polarization are first from bottom to top
Part, the detection device are located at light-emitting device top；Wherein, a polarizer swivel mount is set around the second polarizer, is used
When the rotation for realizing the second polarizer, detection, the first polarizer is fixed, the second polarizer can rotate；Inspection
When survey, transparent polymer stretched film to be detected is between first polarizer and the second polarizer.
According to the present invention, the detection device further includes fixed first polarizer and the installation polarizer
The holder of swivel mount.
According to the present invention, second polarizer is fixedly installed on the polarizer swivel mount, the polarization member
Part swivel mount is connect with the holder by card slot；When detection, polarizer swivel mount does level together with the second polarizer
Rotary motion.
According to the present invention, the dial with angle measurement on the surface of the adjacent holder of polarizer swivel mount,
Polarizer swivel mount surface carries Warning Mark, may indicate that number of rotation, convenient for determining two horizontal positioned polarization members
The polarization direction angle of part.
According to the present invention, the light-emitting device includes LED light source, for providing white light；The LED light source is existing skill
Any LED light source known to art.
According to the present invention, first polarizer and the second polarizer size are identical or different, but the second polarization
Element is located at right over the first polarizer.
According to the present invention, the center of first polarizer and the second polarizer, the illuminating source center of LED light
In same vertical line.
According to the present invention, size and the second polarizer of the polarizer swivel mount match.
According to the present invention, in detection device, the vertical range of first polarizer and the second polarizer is
0.5~5cm.
According to the present invention, the vertical range of the light-emitting device and the first polarizer is 2~5cm.
According to the present invention, first polarizer and the second polarizer are linear polarizer, a diameter of 3~15cm,
Preferably 5~10cm.
According to the present invention, the polarizing film can be black and white, can also be colored.
According to the present invention, the polarizing film can be glass, can also be plastics.
According to the present invention, the shape of the detection device and light-emitting device can be rectangle, square or circle.
The present invention also provides a kind of methods that detection transparent polymer stretched film is orientated equilibrium degree, and the method is using above-mentioned
Device.
According to the present invention, the method includes：(1) transparent polymer stretched film to be measured is placed in first polarizer
Among second polarizer, and it is placed on the first polarizer top；(2) light source is opened, the second polarizer is rotated,
Tester looks up the variation of the light sent out from the second polarizer perpendicular to the side of detection device.
According to the present invention, when the transparent polymer stretched film R values not in 0.6~1.5 range (that is, R<0.6 or R>
1.5) when, it is observed that color fringe, and the color of the striped and color fringe can be with the rotation of the second polarizer
(i.e. there are certain angles for the polarization direction of the first polarizer and the second polarizer) and change.When described transparent poly-
When closing value=0.6 R of object stretched film~1.5, it is observed that light and shade striped, the light and shade striped is no color or only
Slight color, and the color of the light and shade striped and striped can with the second deflection element rotation (i.e. the first polarizer and
There are certain angles for the polarization direction of second polarizer) and change, it is more connect with the rotation angle of the second polarizer
Nearly 90 degree or 270 degree (i.e. the polarization direction of the first polarizer and the second polarizer is at plumbness), the light and shade item
Line is more clear.
Heretofore described polymer stretched film, including polyolefin (such as polyvinyl chloride, polyethylene, polypropylene or its copolymerization
Object), the multilayer of polyester, polyamide and other resin uniaxial or biaxial stretching films or above-mentioned uniaxial or biaxial stretching film
Composite membrane.Such as can be biaxially oriented polypropylene film (BOPP) etc..
The thickness of heretofore described polymer stretched film is preferably between 5-120 microns.
Beneficial effects of the present invention：
1. the present invention provides the device that a kind of detection transparent polymer stretched film is orientated equilibrium degree, described device has small
Type, portable, qualitative detection, it is easy to operate the advantages that.
2. the present invention also provides a kind of method that detection transparent polymer stretched film is orientated equilibrium degree, the method is using upper
Device is stated, it is simple, convenient to carry out.
Description of the drawings
Fig. 1 gives the light source light spectrogram that transparent Biaxially oriented polypropylene (BOPP) film is detected in embodiment 1.
It is in 90 degree or 270 that Fig. 2 (a), which give the polarization direction angle in embodiment 2 in upper and lower two polarizers,
When spending (when the polarization direction of two polarizers is vertical), the spectrogram of the BOPP film of detection.
Fig. 2 (b) give the polarization direction angle in embodiment 2 in upper and lower two polarizers in 180 degree or
At 360 degree (when the polarization direction of two polarizers is parallel), the spectrogram of the BOPP film of detection.
It is in 90 degree or 270 that Fig. 3 (a), which give the polarization direction angle in embodiment 3 in upper and lower two polarizers,
When spending (when the polarization direction of two polarizers is vertical), the spectrogram of the BOPP film of detection.
Fig. 3 (b) give the polarization direction angle in embodiment 3 in upper and lower two polarizers in 180 degree or
At 360 degree (when the polarization direction of two polarizers is parallel), the spectrogram of the BOPP film of detection.
Fig. 4 is the structural schematic diagram for the device that detection transparent polymer stretched film of the present invention is orientated equilibrium degree；
Wherein, 1 is the second polarizer, and 2 be the first polarizer, and 3 be the second polarizer swivel mount, and 4 be polarization member
Part fixation holder, 5 be light-emitting device (LED light source), and 6 be transparent polymer stretched film to be detected.
Specific implementation mode
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.Furthermore, it is to be understood that after having read recorded content of the invention, this field skill
Art personnel can make various changes or modifications the present invention, and such equivalent forms equally fall within limited range of the present invention.
Embodiment 1
As shown in figure 4, the device that the detection transparent polymer stretched film of the present invention is orientated equilibrium degree includes light-emitting device 5,
For providing white light；And detection device, the detection device include the first polarizer 2 and second disposed in parallel from bottom to top
Identical, diameter 8cm, the circle of glass material are black for size for polarizer 1, first polarizer 2 and the second polarizer 1
White linear polarizer, and the second polarizer 1 is located at right over the first polarizer 2, the detection device is located at light-emitting device 5
Top, and the vertical range of light-emitting device 5 and the first polarizer 2 is 5cm, the first polarizer 2 and the second polarizer 1
Vertical range is 1.5cm；A polarizer swivel mount 3 is arranged in second polarizer, 1 surrounding, for realizing the second polarizer 1
Rotation；Detection device further includes the holder 4 fixed the first polarizer 2 and install the polarizer swivel mount 3；Its
In, the second polarizer 1 is fixedly installed on the polarizer swivel mount 3, the polarizer swivel mount 3 and the holder
4 are connected by card slot；Dial with angle measurement on the surface of the adjacent holder of polarizer swivel mount 3 is (from 0
Spend to 360 degree), 3 surface of polarizer swivel mount carries Warning Mark (fixed arrow), may indicate that number of rotation, is convenient for
Determine the polarization direction angle of two horizontal positioned polarizers.
A series of BOPP film of difference R values is chosen respectively, and the thickness of the film is 60 microns；The R values of the film
Respectively 0.3,0.5,0.8,1.0,1.2,1.8,2.5.
When detection, the BOPP film of different R values is chosen respectively, is placed in above the first polarizer 2 of bottom, and light source is opened
(LED light source), continuous rotatable polarization member swivel mount 3 (that is, second polarizer 1 of rotation), and inclined perpendicular to second
Shake the spectrum that the side of element 1 looks up.
The BOPP film that following table gives different R values is in vertical peace in the polarization direction angle of two polarizers
When row, the spectral color situation of change observed.
Fig. 1 gives the light source light spectrogram that BOPP film is detected in embodiment 1.As shown in Figure 1, the light that light source is sent out is white
Light occurs without colourama.
The result shows that：By choosing the BOPP film of different R values, the second polarizer is constantly rotated, can be observed respectively
To colored or light and shade striped, the color of the striped and striped can be with rotation (i.e. the first polarizer of the second polarizer
There are certain angles with the polarization direction of the second polarizer) and change.Wherein,
(a) when the R values of the BOPP film not in 0.6~1.5 range (that is, R<0.6 or R>1.5) when, such as R values 0.3,
0.5,1.8,2.5 when, it is observed that color fringe, and the color of the color fringe and color fringe can be with second partially
Shake element rotation (i.e. there are certain angles for the polarization direction of the first polarizer and the second polarizer) and change；
Such as when the polarization direction angle of first polarizer and the second polarizer rotates to horizontality from plumbness
When, the striped and color of the color fringe observed can change；
(b) when value=0.6 R of the BOPP film~1.5, such as when R values 0.8,1.0,1.2, it is observed that
Light and shade striped, the light and shade striped are no color or only slight color (nearly white light), and the light and shade striped and striped
Color can be as (i.e. there are one for the polarization direction of the first polarizer and the second polarizer for the rotation of the second deflection element
Clamp angle) and it changes, such as when the polarization direction angle of first polarizer and the second polarizer is from vertical
When state rotates to horizontality, the striped and color of the color fringe observed can change；With the second polarization member
(i.e. the polarization direction of the first polarizer and the second polarizer is at vertical configuration closer to 90 degree or 270 degree for the rotation angle of part
State), the light and shade striped is more clear.
Embodiment 2
It is detected using 1 identical device of embodiment.
When detection, it is 60 microns to take one piece of transparent BOPP film, thickness, is placed in above the first polarizer of bottom,
Light source, continuous rotatable polarization member swivel mount (that is, second polarizer of rotation) are opened, and is polarized perpendicular to second
The spectrum that the side of element looks up.
It is in 90 degree or 270 that Fig. 2 (a), which give the polarization direction angle in embodiment 2 in upper and lower two polarizers,
When spending (when the polarization direction of two polarizers is vertical), the spectrogram of the BOPP film of detection.
Fig. 2 (b) give the polarization direction angle in embodiment 2 in upper and lower two polarizers in 180 degree or
At 360 degree (when the polarization direction of two polarizers is parallel), the spectrogram of the BOPP film of detection.
The result shows that：By constantly rotating the second polarizer, it is observed that color fringe, the color fringe and coloured silk
The color of vitta line can be with rotation (the i.e. polarization direction of the first polarizer and the second polarizer of the second polarizer
There are certain angles) and change.Wherein,
(a) (the polarization of two polarizers when the polarization direction angle of two polarizers is in 90 degree or 270 degree
When change direction is vertical), in the spectrum looked up perpendicular to the side of the second polarizer by Fig. 2 (a) as it can be seen that observing
Color fringe be bloom gradual change color, dark color represents pink colour spectrum in figure, and light color represents yellow spectrum；
(b) when the polarization direction angle of two polarizers is in 180 degree or 360 degree (two polarizers it is inclined
When shaking direction is parallel), in the spectrum looked up perpendicular to the side of the second polarizer by Fig. 2 (b) as it can be seen that observation
The color fringe arrived is the color of bluish-green gradual change, and dark color represents blue color spectrum in figure, and light color represents green spectral.
Due to being observed that color fringe, and the color fringe and coloured silk on the direction of the second polarizer
The color of vitta line can change with the rotation of the second polarizer；It can obtain, the R values of the BOPP film do not exist
0.6~1.5 range is (that is, R<0.6 or R>1.5).
Embodiment 3
It is detected using 1 identical device of embodiment.
When detection, it is 60 microns to take one piece of transparent BOPP film, thickness, is placed in above the first polarizer of bottom,
Light source, continuous rotatable polarization member swivel mount (that is, second polarizer of rotation) are opened, and is polarized perpendicular to second
The spectrum that the side of element looks up.
It is in 90 degree or 270 that Fig. 3 (a), which give the polarization direction angle in embodiment 3 in upper and lower two polarizers,
When spending (when the polarization direction of two polarizers is vertical), the spectrogram of the BOPP film of detection.
Fig. 3 (b) give the polarization direction angle in embodiment 3 in upper and lower two polarizers in 180 degree or
At 360 degree (when the polarization direction of two polarizers is parallel), the spectrogram of the BOPP film of detection.
The result shows that：By constantly rotating the second polarizer, it is observed that light and shade striped, the light and shade striped is that do not have
Colored or only slight color, and the color of the light and shade striped and striped can with the second deflection element rotation (i.e.
There are certain angles for the polarization direction of first polarizer and the second polarizer) and change, wherein
(a) (the polarization of two polarizers when the polarization direction angle of two polarizers is in 90 degree or 270 degree
When change direction is vertical), in the spectrum looked up perpendicular to the side of the second polarizer by Fig. 3 (a) as it can be seen that observing
Light and dark black and white strip；
(b) when the polarization direction angle of two polarizers is in 180 degree or 360 degree (two polarizers it is inclined
When shaking direction is parallel), in the spectrum looked up perpendicular to the side of the second polarizer by Fig. 3 (b) as it can be seen that observation
The color fringe arrived is faint yellow with white alternate color, and dark color represents yellowish color spectrum in figure, and light color represents white spectrum.
Due to being observed that light and shade striped on the direction of the second polarizer, the light and shade striped is that do not have
Color or only slight color, and the color of the light and shade striped and striped can occur with the rotation of the second deflection element
Variation, and as the rotation angle of the second polarizer is closer to 90 degree or 270 degree (i.e. the first polarizer and the second polarizers
Polarization direction at plumbness), the light and shade striped is more clear；It can obtain, value=0.6 R of the BOPP film~
1.5。
More than, embodiments of the present invention are illustrated.But the present invention is not limited to the above embodiments.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the present invention
Within the scope of shield.
Claims (10)
1. a kind of detection transparent polymer stretched film is orientated the device of equilibrium degree, which is characterized in that described device includes the dress that shines
It sets, for providing white light；And detection device, the detection device include the first polarizer disposed in parallel and the from bottom to top
Two polarizers, the detection device are located at light-emitting device top；Wherein, polarizer rotation is set around the second polarizer
Pivoted frame, for realizing the rotation of the second polarizer, when detection, the first polarizer is fixed, the second polarizer can be with
Rotation；When detection, transparent polymer stretched film to be detected is between first polarizer and the second polarizer.
2. the apparatus according to claim 1, which is characterized in that the detection device further includes fixed first polarization
Element and the holder for installing the polarizer swivel mount.
3. device according to claim 1 or 2, which is characterized in that second polarizer is fixedly installed in described inclined
It shakes on element swivel mount, the polarizer swivel mount is connect with the holder by card slot；When detection, polarizer swivel mount
Horizontal revolving motion is done with together with the second polarizer.
4. according to the device described in any one of claim 1-3 claims, which is characterized in that the polarizer swivel mount
Dial with angle measurement on the surface of adjacent holder, polarizer swivel mount surface carry Warning Mark, can be with table
Bright number of rotation, convenient for determining the polarization direction angle of two horizontal positioned polarizers.
Preferably, the light-emitting device includes LED light source, for providing white light；What the LED light source was known in the art
Any LED light source.
5. according to the device described in any one of claim 1-4 claims, which is characterized in that first polarizer
It is identical or different with the second polarizer size, but the second polarizer is located at right over the first polarizer.
Preferably, the center of first polarizer and the second polarizer, LED light illuminating source center be located at it is same
On vertical line.
Preferably, the size of the polarizer swivel mount matches with the second polarizer.
6. according to the device described in any one of claim 1-5 claims, which is characterized in that first polarizer and
Second polarizer is linear polarizer, a diameter of 3~15cm, preferably 5~10cm.
Preferably, the polarizing film can be glass, can also be plastics.
Preferably, in detection device, the vertical range of first polarizer and the second polarizer is 0.5~5cm.
Preferably, the vertical range of the light-emitting device and the first polarizer is 2~5cm.
7. a kind of method that detection transparent polymer stretched film is orientated equilibrium degree, the method is using any one of claim 1-6
Device described in claim.
8. the method according to the description of claim 7 is characterized in that the method includes：(1) transparent polymer to be measured is stretched
Film is placed among first polarizer and second polarizer, and is placed on the first polarizer top；(2) it opens
Light source rotates the second polarizer, and tester looks up perpendicular to the side of detection device to be sent out from the second polarizer
The variation of light.
9. method according to claim 7 or 8, which is characterized in that when the R values of the transparent polymer stretched film do not exist
0.6~1.5 range is (that is, R<0.6 or R>1.5) when, it is observed that color fringe, and the color fringe and color fringe
Color can be as (i.e. the polarization direction of the first polarizer and the second polarizer exists certain for the rotation of the second polarizer
Angle) and change.When value=0.6 R of the transparent polymer stretched film~1.5, it is observed that light and shade striped, institute
It is no color or only slight color to state dark fringe clearly, and the color of the light and shade striped and striped can be with the second deviation
The rotation (i.e. there are certain angles for the polarization direction of the first polarizer and the second polarizer) of element and change, with
The rotation angle of the second polarizer closer to 90 degree or 270 degree of (i.e. polarizations of the first polarizer and the second polarizer
Direction is at plumbness), the light and shade striped is more clear.
10. the method described in any one of claim 7-9 claims, which is characterized in that the polymer stretched film, including
Polyolefin (such as polyvinyl chloride, polyethylene, polypropylene or its copolymer), polyester, polyamide and other resins are one-way or bi-directional
The multilayer complex films of stretched film or above-mentioned uniaxial or biaxial stretching film.Such as can be biaxially oriented polypropylene film
(BOPP) etc..
Preferably, the thickness of the polymer stretched film is preferably between 5-120 microns.
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| CN201710255859.0A CN108732108B (en) | 2017-04-17 | 2017-04-17 | Device and method for detecting orientation equilibrium degree of transparent polymer stretched film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710255859.0A CN108732108B (en) | 2017-04-17 | 2017-04-17 | Device and method for detecting orientation equilibrium degree of transparent polymer stretched film |
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| JPH06229909A (en) * | 1993-01-30 | 1994-08-19 | New Oji Paper Co Ltd | Measuring apparatus for polarized dichroism |
| JPH07128225A (en) * | 1993-10-29 | 1995-05-19 | Ono Sokki Co Ltd | Crystal axis detecting device |
| US20090262350A1 (en) * | 2008-03-03 | 2009-10-22 | Abbott Nicholas L | Automated analysis system for detection and quantification of biomolecules by measurement of changes in liquid crystal orientation |
| WO2010103386A1 (en) * | 2009-03-10 | 2010-09-16 | Università Degli Studi Di Padova | Sensitivity enhancement in grating coupled surface plasmon resonance by azimuthal control |
-
2017
- 2017-04-17 CN CN201710255859.0A patent/CN108732108B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06229909A (en) * | 1993-01-30 | 1994-08-19 | New Oji Paper Co Ltd | Measuring apparatus for polarized dichroism |
| JPH07128225A (en) * | 1993-10-29 | 1995-05-19 | Ono Sokki Co Ltd | Crystal axis detecting device |
| US20090262350A1 (en) * | 2008-03-03 | 2009-10-22 | Abbott Nicholas L | Automated analysis system for detection and quantification of biomolecules by measurement of changes in liquid crystal orientation |
| WO2010103386A1 (en) * | 2009-03-10 | 2010-09-16 | Università Degli Studi Di Padova | Sensitivity enhancement in grating coupled surface plasmon resonance by azimuthal control |
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