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Ultrasonic wave vibration field slit flow small angle laser light scattering real time observation system

A technology of laser light scattering and real-time observation, applied in the measurement of scattering characteristics, etc., can solve the problems of attenuation, large loss, and inability to reflect the influence of vibration on the shape and structure of the melt, and achieve the effect of accelerating the relaxation process and enriching the theory

Inactive Publication Date: 2004-02-18
ZHEJIANG UNIV
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Problems solved by technology

Such patents can reflect the relationship between vibration and melt viscosity, but they cannot reflect the influence of vibration on the shape and structure of the melt
Moreover, in this type of patent, the vibration added in the direction of the pressure rod has attenuation. The longer the pressure rod, the more serious the attenuation, the higher the precision of the cooperation between the pressure rod and the barrel wall, and the greater the loss
In addition, if you want to perform other characterizations on the extruded melt, you need to re-sample, which changes the thermal history of the melt, making the measured results unrealistic and real-time

Method used

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  • Ultrasonic wave vibration field slit flow small angle laser light scattering real time observation system
  • Ultrasonic wave vibration field slit flow small angle laser light scattering real time observation system
  • Ultrasonic wave vibration field slit flow small angle laser light scattering real time observation system

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Embodiment Construction

[0010] Such as figure 1 , figure 2 As shown, it includes: a mold 6 with a slit flow channel 3 on the lower part and a material cavity 2 on the upper part wound with a heating coil. The mold 6 is assembled from a left mold 7, an interlayer 8 and a right mold 9. The interlayer The thickness of 8 is consistent with the thickness of the slit flow channel 3, a temperature sensor 5 is installed on the outer surface of the bottom of the cavity 2, a plunger rod 1 is installed in the material storage cavity 2, and a clamp equipped with a displacement sensor 4 is installed above the plunger rod 1. The pressure control system A is equipped with an ultrasonic generator B and a laser C at the upper and lower parts perpendicular to the long side of the slit flow channel 3 of the mold 6, the laser C corresponds to the photodetector D, and the photodetector D is connected to The amplifier E, the heating coil and the temperature sensor are connected to the temperature control system F, and t...

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Abstract

A real-time observing system for small-angle laser diffusion of slit in ultrasonic vibration field is composed of a die wound by heating winding and with lower slit and upper material cavity, temp sensor, displace sensor installed to plunger rod in said cavity ultrasonic generator, laser device, photoelectric detector, amplifier, temp control system and microcomputer.

Description

technical field [0001] The invention relates to a system for testing or analyzing materials by means of measuring chemical or physical properties of materials, in particular to a real-time observation system for ultrasonic vibration field slit flow small-angle laser light scattering. Background technique [0002] In recent years, domestic and foreign scholars have carried out a lot of in-depth and meticulous research work on melt vibration molding technology, a new polymer molding processing method, and achieved many gratifying results. In order to study the influence of vibration field on polymer morphology, some patented technologies such as vibrating capillary rheometer apply low-frequency mechanical vibration to the pressure rod and transmit it to the melt through the pressure rod to study the influence of vibration on the rheological properties of the melt . Such patents can reflect the relationship between vibration and melt viscosity, but the...

Claims

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Application Information

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IPC IPC(8): G01N21/47
Inventor 郑强佟立芳彭懋上官勇刚
Owner ZHEJIANG UNIV
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