CN203275319U - Constant width film stretching apparatus for combining with X-ray scattering - Google Patents
Constant width film stretching apparatus for combining with X-ray scattering Download PDFInfo
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- CN203275319U CN203275319U CN 201220733325 CN201220733325U CN203275319U CN 203275319 U CN203275319 U CN 203275319U CN 201220733325 CN201220733325 CN 201220733325 CN 201220733325 U CN201220733325 U CN 201220733325U CN 203275319 U CN203275319 U CN 203275319U
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Abstract
The utility model provides a constant width film stretching apparatus for combining with X-ray scattering, wherein the apparatus adopts two YASKAWA servo motors to drive a ball screw to apply stretching on a sample, motor rotation is controlled through a Labview software, and one end of the apparatus is provided with a tension sensor to track tension change during a stretching process. During a stretching process, a scissors mechanism fixture is adopted in a direction perpendicular to a stretching direction, such that constant width maintaining of a sample during stretching is ensured, uniform movement of the collet point along with the sample is met, and sample stretching is not interfered. According to the utility model, the apparatus adopts a forced nitrogen stream to uniformize temperature distribution of a sample bin and reduce thermal degradation of the sample at a high temperature; two temperature monitoring points are preset inside the sample bin, and a temperature controller is adopted to perform precise temperature control; and the apparatus has advantages of easy disassembly, easy installation and the like, is very suitable for combining with synchrotron radiation experiment line stations, and is a good apparatus for researches on relationship between structure evolution behavior and film performances during film stretching processing.
Description
Technical field
The utility model relates to the technology with synchrotron radiation X-ray scattering research macromolecule membrane structure evolution and outfield parameters relationship, be specifically related to a kind of and permanent fabric width thin film stretching device X ray scattering coupling, can study different film samples at the different stretch temperature, structure evolution behavior under different stretch speed and draw ratio.The crystallinity of the film sample that the X ray scattering is obtained, the degree of orientation and stretching mechanical data coupling can obtain the relation of outfield parameter and membrane structure performance.Be used for laboratory simulation actual film stretch process condition, disclose the problem in science of thin film industry processing.
Background technology
In the macromolecule membrane stretch process, its vertical direction need to keep constant width when a direction stretches.During uniaxial tension, horizontal fabric width keeps constant, only stretches in machine direction.Biaxially oriented film processing is used in the widest asynchronous stretch process, machine direction and when laterally stretching respectively, and strain does not occur in its corresponding vertical direction yet, and strain is that the film thickness direction produces and also finally causes the film attenuate.This stretching mode and uniaxial orientation spinning processing and usually field of flow induced crystallization research centre field to apply mode different.According to investigation, also do not have permanent fabric width unilateral stretching to induce the report of polymer crystallization.Obviously, development is top priority with the permanent fabric width stretching original position device of structure detection experiment centre coupling.
Although the existing a large amount of accumulation of relevant field of flow induced crystallization is mostly adopted and sheared the flow field, elongational flow research is relatively less, and the original position research of permanent fabric width elongational flow field induced crystallization yet there are no report so far.For the flow field load mode of film stretching processing, study the relation that permanent fabric width elongational flow is induced different high molecular crystallization kinetics behaviors, strain rate and crystal orientation and form.By simulation actual film stretch process condition, the relation of structure evolution behavior and processing characteristics and final usability in the processing of announcement film stretching.Sum up their minute other rules in film stretching processing, the difference of more different macromolecular material stretch behaviors, structure evolution dynamics and form discloses the physical problem of film stretching processing and proposes to solve thinking and scheme.
The characteristics that need to have in sum, following aspect with the permanent fabric width thin film stretching device of X ray scattering coupling: 1, stretching mode is that the permanent fabric width of single shaft stretches, and during stretching, stretched vertically direction fabric width remains unchanged; 2, device should easily be dismantled and install, and is convenient to and the station coupling of synchrotron radiation X-ray scattered ray; 3, different macromolecular material, the temperature of industrial processes, speed and draw ratio are different, the temperature of device, stretch that when rate of extension should be adjustable continuously.
Summary of the invention
The purpose of this utility model is, provides a kind of and permanent fabric width thin film stretching device X ray scattering coupling.This stretching device has easy dismounting and installation, is convenient to and the coupling of synchrotron radiation X-ray experiment centre; Rate of extension and draw ratio are adjustable continuously; Stretching mode is permanent fabric width uniaxial tension; Sample temperature is controlled accurately; The pulling force range ability is large, has the characteristics such as hyperchannel real-time data acquisition.Can obtain morphosis information such as crystallinity, the degree of orientation and the rheology information (tension variations) of film sample, obtain the relation that outfield parameter and membrane structure develop.
The technical solution adopted in the utility model is: a kind of permanent fabric width thin film stretching device of and X ray scattering coupling comprises the high-precision servo motor, scrambler, driver, ball-screw, heating rod, temperature controller, pulling force sensor, data collecting card, the Labview software control system, wherein:
the motion of high-precision servo motor driven ball screws, electric machine rotation is converted into rectilinear motion, ball-screw drives vertical collet movement, laterally chuck adopts scissor-type mechanism, the Labview software control system is carried out integrated to control and the pulling force sensor signals collecting of servomotor, can carry out synchro control and data acquisition, the NINI-USB6008 data collecting card that pulling force data collection use American National instrument company produces, the film stretching temperature is accurately controlled by the binary channels temperature controller, the sample heating chamber arranges two thermal resistances, the temperature information of surveying feeds back to temperature controller.
The utility model is compared innovative point with stretching device commonly used and is mainly contained:
1, the utility model is easily dismantled and is installed, and is convenient to and the station coupling of synchrotron radiation X-ray scattering experiment.
2, the utility model stretching mode is that the permanent fabric width of single shaft stretches, and during stretching, stretched vertically direction fabric width remains unchanged.
3, the utility model can be realized the binary channels continuous temperature control, and temperature is accurate.
4, the utility model rate of extension and draw ratio are adjustable continuously, and control accurately.
5, but the utility model hyperchannel accurately gathers pulling force data in real time.
6, the utility model can carry out setting parameter for different high molecular film materials, and the problem in science that discloses the macromolecule membrane stretching is had universality.
7, application prospect of the present utility model: 1 with the station coupling of synchrotron radiation X-ray scattering experiment, the Basic Science Problem in systematic study macromolecule membrane drawing process; 2) simulation industrial film stretch process condition, in the processing of announcement film stretching, the relation of structure evolution behavior and processing characteristics and final usability, be processed with the enlightenment effect to thin film industry.
Description of drawings
Fig. 1 is described in the utility model and the structural representation of the permanent fabric width thin film stretching device of X ray scattering coupling; In figure, 1 is the high-precision servo motor, and 2 is ball-screw, and 3 is pulling force sensor, and 4 is horizontal chuck, and 5 is vertical chuck, and 6 is film sample, and 7 is the Labview software control system.
Fig. 2 is described in the utility model and the mechanical assembly drawing of the permanent fabric width thin film stretching device of X ray scattering coupling;
Fig. 3 is the manufacturing drawing of the vertical chuck of this device;
Fig. 4 is this device lateral scissor-type fixture fundamental diagram;
Fig. 5 is the processing procedure of the pulling force information that obtains of sensor;
Fig. 6 be described in the utility model be 7 at draw ratio, when temperature is 125 ℃, when rate of extension is respectively 10mm/s and 40 mm/s, the engineering stress strain curve of the high density polyethylene of cross-linking radiation;
Fig. 7 be described in the utility model be 3 at draw ratio, temperature is under 125 ℃, when rate of extension is respectively 10mm/s and 40mm/s, the engineering stress strain curve of the high density polyethylene of stretching cross-linking radiation.
Embodiment
Further illustrate the books utility model below in conjunction with drawings and Examples.
A kind of permanent fabric width thin film stretching device of and X ray scattering coupling, referring to accompanying drawing 1, high-precision servo motor 1 drives ball-screw 2 motions, and electric machine rotation is converted into rectilinear motion.Ball-screw drives vertical chuck 5 motions, realizes the stretching to film sample 6.Travelling speed is adjustable continuously, can coordinate well different materials to the response of draw speed.4 is horizontal chuck, adopts scissor-type mechanism, has both guaranteed that sample fabric width in stretching keeps constant, satisfied simultaneously the chuck point and evenly moves with sample, not the longitudinal stretching of disturbed specimen.In drawing process, pulling force sensor 3 is followed the tracks of tension variations.The control of 7 pairs of servomotors of this device employing Labview software control system and pulling force sensor signals collecting are carried out integrated, can carry out synchro control and data acquisition.The NINI-USB6008 data collecting card that pulling force data collection use American National instrument company produces, sampling rate is 10Ks/s, and in experimentation the general sampling rate that adopts 1ks/s, this high speed acquisition data are very important for this oriented film material.Both realized that the resolution of pulling force acquisition time reached 1 millisecond, the deal with data complexity of also having avoided too much data point to bring simultaneously.
This device adopts Labview software programming servomotor motion control program, by motor driver, steering order is issued scrambler, controls motor and accurately moves.Simultaneously scrambler can feed back the motor actual displacement, and the actual displacement of two motors is compared, and can control the synchronism of two motor movements;
This device adopts the duty of binary channels temperature controller control heating rod to realize the sample temperature control, and temp probe has retroactive effect.By the accurate control chamber temperature of pid regulator parameters and temperature rate.
Utilize above-mentioned permanent fabric width thin film stretching device, with synchrotron radiation WAXS wide angle X ray scattering and the coupling of small angle X ray scattering experiment centre, the relation of structure evolution behavior and processing characteristics in original position research film stretch process.
Experimental procedure main when this device and the coupling of X ray experiment centre is:
Step (1), with motor driver respectively with the device motor and control host computer and is connected, pulling force is gathered switch board respectively with sensor and control host computer and is connected, connect temperature controller and install heating rod, power-on;
Step (2), clamping macromolecule membrane sample;
Step (3), open Labview software control interface, set rate of extension and the stretching time of motor;
Step (4), setting film stretching temperature when sample reaches design temperature, are opened the X ray light source, and sample is implemented to stretch, and record simultaneously tension variations and the evolution of stretched film sample structure in drawing process;
Step (5), by different films are implemented different stretch speed and draw ratio, the impact that systematic study molecular parameter and outfield parameter develop on membrane structure gets up these data couplings finally to obtain the relation of machined parameters---membrane structure---properties of product.
Wherein, control software based on Labview, by controlling rotating speed and the time of motor, accurately realize different rates of extension and draw ratio.
Wherein, in drawing process, perpendicular to draw direction, it is constant that the film fabric width keeps, and is used for laboratory simulation actual film stretch process condition.
Wherein, device can be realized the accurate temperature controlling to film sample, and can realize film sample surface temperature homogeneity.
Wherein, when Labview controls electric machine rotation, can gather the variation of film sample pulling force, obtain different samples, the impact of different outfields parameter on the film stretching rheological property.
Wherein, device can with the coupling of synchrotron radiation X-ray experiment centre, the in-situ tracking membrane structure develops.
Experiment embodiment:
The impact that WAXS wide angle X ray scattering original position research rate of extension stretches on lightly crosslinked high density polyethylene.
Experiment purpose:
In the film stretching process, the Structure and form important of outfield parameter (draft temperature, rate of extension, draw ratio) to film, and then can affect the performance of film product, as mechanical property and optical property.The relation of setting up outfield parameter and membrane structure and performance is beneficial to and instructs thin film industry processing.X ray scattering original position research method can in-situ tracking stretched film morphosis evolutionary process, outfield parameter and membrane structure, form are mapped, processing has directive function to film stretching.This experiment is intended to study rate of extension to the impact of film morphology and film stretching rheological property.
Experimentation:
High density polyethylene (HDPE) is molded into the thick thin slice of 1mm under 180 ℃, under 90 ℃ after annealing 24h
60C
oLower irradiation, dosage are 15kGy.24h anneals the sample after irradiation under 90 ℃.Be cut into and be of a size of 20 * 26 * 1mm
3Sample after, clamping the device on.Sample is heated under 180 ℃, keeps 12min to eliminate thermal history, is cooled to afterwards 125 ℃ sample is implemented to stretch.The differentiation of sample form before and after the scattering of the wide angle of X ray is followed the tracks of and stretched, pulling force sensor records the variation of power in drawing process.In conjunction with pulling force and sample form, can obtain the outfield parameter to the impact of membrane structure.This example is draft temperature (125 ℃) fixedly, and as variable, the research rate of extension is 10mm/s and 40mm/s with rate of extension and draw ratio, and draw ratio is 3 and the variation of 7 o'clock sample structures.
Experimental result:
Fig. 6 is that draw ratio is 7 o'clock, and when rate of extension was respectively 10mm/s and 40mm/s, the engineering stress strain curve can find out that from curve draw ratio is at 2 o'clock, and yield phenomenon appears in sample, along with the increase of draw ratio, occurs the strain softening phenomenon on curve.When rate of extension is 10mm/s, occur without hardening phenomenon.When rate of extension was 40mm/s, draw ratio was 6 o'clock, the strain hardening phenomenon occurred.
Fig. 7 is that the stretching speed ratio is 3 o'clock, and when rate of extension was respectively 10mm/s and 40mm/s, the engineering stress strain curve can find out that from curve draw ratio is at 2 o'clock, and yield phenomenon appears in sample, along with the increase of draw ratio, occurs without strain hardening.
Experiment conclusion:
Can find out from the engineering stress strain curve of Fig. 6 and Fig. 7, large draw ratio and rate of extension can cause strain hardening to occur, and cause film to form stronger structure, increase the performance of film.
The part that the utility model does not elaborate belongs to techniques well known.
Although the above is described the illustrative embodiment of the utility model; so that the technician of present technique neck understands the utility model; but should be clear; the utility model is not limited to the scope of embodiment; to those skilled in the art; as long as various variations appended claim limit and the spirit and scope of the present utility model determined in, these variations are apparent, all innovation and creation that utilize the utility model design are all at the row of protection.
Claims (1)
1. the permanent fabric width thin film stretching device with X ray scattering coupling, is characterized in that: comprise high-precision servo motor (1), ball-screw (2), pulling force sensor (3), laterally chuck (4), vertically chuck (5), with Labview software control system (7), wherein:
high-precision servo motor (1) drives ball-screw (2) motion, electric machine rotation is converted into rectilinear motion, ball-screw (2) drives vertical chuck (5) motion, laterally chuck (4) adopts scissor-type mechanism, Labview software control system (7) is carried out integrated to control and the pulling force sensor signals collecting of servomotor, can carry out synchro control and data acquisition, the NINI-USB6008 data collecting card that pulling force data collection use American National instrument company produces, the film stretching temperature is accurately controlled by the binary channels temperature controller, the sample heating chamber arranges two thermal resistances, the temperature information of surveying feeds back to temperature controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220733325 CN203275319U (en) | 2012-12-27 | 2012-12-27 | Constant width film stretching apparatus for combining with X-ray scattering |
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| CN 201220733325 CN203275319U (en) | 2012-12-27 | 2012-12-27 | Constant width film stretching apparatus for combining with X-ray scattering |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486576A (en) * | 2015-12-24 | 2016-04-13 | 浙江师范大学 | Automatic stretching alignment device for synchrotron radiation in-situ test |
| CN110031362A (en) * | 2019-02-26 | 2019-07-19 | 中国科学技术大学 | A kind of steam stretching, extension rheometer |
| CN110068521A (en) * | 2019-03-04 | 2019-07-30 | 中国科学技术大学 | A kind of rotation shearing device |
-
2012
- 2012-12-27 CN CN 201220733325 patent/CN203275319U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486576A (en) * | 2015-12-24 | 2016-04-13 | 浙江师范大学 | Automatic stretching alignment device for synchrotron radiation in-situ test |
| CN110031362A (en) * | 2019-02-26 | 2019-07-19 | 中国科学技术大学 | A kind of steam stretching, extension rheometer |
| CN110068521A (en) * | 2019-03-04 | 2019-07-30 | 中国科学技术大学 | A kind of rotation shearing device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20161227 |