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A sample holder for on-line stretching of polymer melt and its use

A sample holder and polymer technology, applied in the field of auxiliary equipment for tensile testing of polymer melts, can solve problems such as inability to continuously collect scattering data, melt collapse, and inability to collect data online continuously, so as to achieve continuity Collect and ensure the effect of smooth progress

Active Publication Date: 2020-01-17
厦门蚂蚁云科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Scattering data cannot be collected continuously due to the problem of melt collapse during polymer melt stretching
When the melt is stretched, the shifting mechanism can be controlled by the program to drive the support pin group to move below the melt, so that the melt sample will not have obvious subsidence, and the support can be realized, and incident light such as laser or X-ray can be allowed It can pass the sample smoothly, ensure the smooth progress of the experiment, and solve the problem that the data cannot be continuously collected online due to the collapse of the melt

Method used

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  • A sample holder for on-line stretching of polymer melt and its use
  • A sample holder for on-line stretching of polymer melt and its use
  • A sample holder for on-line stretching of polymer melt and its use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] refer to figure 1 ,use figure 1 The equipment carries out the on-line tensile test of polymer melt 11, and this equipment mainly comprises the sample holder 10 of polymer melt online stretching and biaxial tensile testing machine 14, installs CCD image acquisition on biaxial tensile testing machine 14 Device 12, mirror 13, laser or X-ray receiving device 16 and heating device 15, wherein heating device 15 is used for heating polymer melt 11, CCD image acquisition device 12 can collect polymer melt 11 heating and The change of its appearance during the stretching process, so as to record the deformation of the polymer melt 11, the mirror 13 has a hole in the middle, and the laser or X-ray passes through the hole in the middle of the mirror 13 to irradiate the polymer melt 11, and the laser Or the X-ray receiving device 16 is placed behind the polymer melt 11 , and the laser or X-ray receiving device 16 receives laser or X-ray scattering signals to analyze various proper...

Embodiment 2

[0037] Such as Figure 5 As shown, the support needle group includes 6 tungsten steel needles 6, the diameter of which is 0.5mm, the width of the metal block (not shown) is equal to the diameter of the tungsten steel needle 6, and the distance between adjacent metal blocks is 4mm. The metal block can be It is plugged and fixed on the boss 4, and the tungsten steel needle 6 is welded on the metal block.

[0038] The extension direction of the 6 tungsten steel needles 6 in the support needle group is strictly consistent with the incident angle of the laser or X-ray. The bracket is used to fix the displacement execution end of the displacement generating mechanism. The displacement generating mechanism driving the supporting pin group to move, so that multiple supporting pin groups support the lower end of the stretched polymer melt sample, and do not block the laser or X-rays from passing through the stretched polymer melt sample smoothly, In this way, the online continuous colle...

Embodiment 3

[0042] A sample holder for online stretching of a polymer melt, the sample holder includes a displacement generating mechanism and a supporting needle group, the supporting needle group is installed on the displacement execution end of the displacement generating mechanism, and is driven by the displacement generating mechanism The supporting needle group moves, the supporting needle group includes a bracket and a plurality of needles, and the plurality of needles are fixed on the bracket in parallel with each other at intervals, and the extension direction of the plurality of needles of the supporting needle group is strictly in line with the laser or X The angle of incidence of the rays is the same, the bracket is used to fix the displacement execution end of the displacement generating mechanism, and the displacement generating mechanism drives the supporting pin group to move, so that the multiple pins of the supporting pin group are The lower end of the stretched polymer m...

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PUM

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Abstract

The invention relates to an on-line stretching specimen bracket for a polymer melt and a purpose thereof. The specimen bracket comprises a displacement generation mechanism and a supporting needle set, wherein the supporting needle set is mounted at a displacement execution end of the displacement generation mechanism; the supporting needle set is driven to move through the displacement generationmechanism; multiple needles of the supporting needle set are enabled to support the lower end of a stretched polymer melt sample; the polymer melt sample cannot be obviously sunken after being stretched, and further, does not block a laser or an X ray; the laser or the X ray is enabled to be capable of smoothly passing through the sample; the on-line continuous acquisition of scattering data is realized. The smooth performing of an experiment is ensured.

Description

technical field [0001] The invention relates to auxiliary equipment for polymer melt tension testing, in particular to a sample support for online stretching of polymer melt and its application. Background technique [0002] There are two typical flow fields in polymer processing: shear flow field and extensional flow field. There have been a lot of studies on the structure evolution under the shear flow field, however, the shear flow field is also called a weak flow field, because the shear flow will cause the polymer molecular chain to rotate so that it deviates from the shear direction , which makes the ability of molecular chains to deform orientation relatively weak. [0003] In contrast, the extensional flow field can make the molecular chains better extended and oriented, and thus can more effectively accelerate the crystallization kinetics and change the morphology and structure during the crystallization process. However, systematic studies on the structural evolu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N11/00
CPCG01N11/00G01N2011/006G01N2011/008
Inventor 陈剑洪刘跃军吴慧青
Owner 厦门蚂蚁云科技有限公司