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Multifunctional foaming test equipment and use method thereof

A testing equipment and multi-functional technology, applied in the direction of analyzing materials, instruments, etc., can solve the problems of not reflecting the expansion of the foaming agent, not considering the pressure factor, and single function.

Pending Publication Date: 2020-06-05
CRERAX SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the equipment for testing the expansion ability of foaming expansion agents is mainly limited to thermomechanical analyzers (TMA), differential scanning calorimeters (DSC), etc. Although these equipments are relatively sophisticated, they cannot reflect the actual use of foaming agents. Expansion in the process, poor guidance for practical application
CN104634809A discloses using a laser rangefinder to measure the sample height online to obtain the expansion rate-temperature relationship curve. Although it is relatively intuitive, it does not consider the pressure factor in the expansion process
CN209542352U discloses a blowing agent gas generation tester, which is not suitable for physical blowing agents with core-shell structure
Based on the above, the current test of the expansion capacity of the foaming agent in the foaming process often has a single function, and cannot fully simulate the process conditions in the actual foaming agent application

Method used

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  • Multifunctional foaming test equipment and use method thereof
  • Multifunctional foaming test equipment and use method thereof
  • Multifunctional foaming test equipment and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: 100 parts of high-temperature expandable microspheres, without medium, from room temperature at 5 ° C per minute to 170 ° C, under 0.2 MPa pressure, output expansion displacement-time curve, can measure the specific temperature of the foaming agent Foaming ability under pressure.

[0018] The specific operation is as follows: Take 0.5g of high-temperature expandable microspheres DU1901 and add them to the bottom of the glass tube, move the piston rod down so that the bottom of the piston contacts the microspheres, inject heat-conducting oil to seal the gap between the piston and the hollow glass tube, and slowly move the piston rod up and down. To reset the gravity and friction of the piston rod to zero on the computer side. Put the glass tube in a constant temperature oil bath at 170°C, move the beam of the universal tensile machine down to continue compacting the material and make the pressure reach 314N, the equivalent pressure is 1MPa, after holding for 2...

Embodiment 2

[0025] Example 2: After mixing 1 part of high-temperature expandable microspheres with 100 parts of automotive undercoating rubber (UBC) evenly, take an appropriate amount and add it to the foamed glass tube, so that the bottom of the piston is in contact with the material and the pressure value is 0 to simulate normal pressure foaming , from room temperature to 110°C at 5°C per minute, hold for 10s, then rise to 150°C at 5°C per minute, hold for 30min, and output the expansion displacement-time curve, which can measure the specific temperature and normal pressure of the blowing agent in PVC glue The lower foaming ability.

Embodiment 3

[0026]Example 3: After mixing 2 parts of ultra-high temperature microspheres and 100 parts of PP powder evenly, take an appropriate amount and add it into a foamed glass tube, stay in an environment of 170°C under a pressure of 0.2MPa for 20s, and stay in an environment of 180°C under a pressure of 0.3MPa for 30s, 0.4MPa Stay at 220°C under pressure for 10s, and output the expansion displacement-time curve, which can measure the foaming ability of the foaming agent in molten plastic particles at different temperatures and pressures.

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Abstract

The invention provides multifunctional foaming test equipment, and the equipment comprises a tension tester, a visual foaming glass tube with a hollow piston rod, and a visual oil bath pan. The invention provides a use method of the multifunctional foaming test equipment. The multifunctional foaming test equipment can simulate the actual foaming environment of a foaming agent, can inspect the influence of a medium, temperature and pressure of the foaming agent on the foaming performance of the foaming agent, and has great value for the development of the foaming agent and the guidance of foaming application.

Description

technical field [0001] The invention relates to a multifunctional foaming test device and a method for testing the expansion ability of a foaming expansion agent by using the multifunctional foaming test device. Background technique [0002] At present, the equipment for testing the expansion ability of foaming expansion agents is mainly limited to thermomechanical analyzers (TMA), differential scanning calorimeters (DSC), etc. Although these equipments are relatively sophisticated, they cannot reflect the actual use of foaming agents. The expansion in the process has poor guidance for practical application. CN104634809A discloses using a laser rangefinder to measure the sample height online to obtain the expansion rate-temperature relationship curve. Although it is relatively intuitive, it does not consider the pressure factor in the expansion process. CN209542352U discloses a blowing agent gas generation tester, which is not suitable for physical blowing agents with a cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/16
CPCG01N7/16
Inventor 章超王雪飞袁润虎陈明坤聂智军高亮何志兰
Owner CRERAX SCI & TECH CO LTD