Melt flowing velocity testing device

Abstract

The invention discloses a melt flowing velocity testing device, and relates to the technical field of detection equipment. The melt flowing velocity testing device comprises a programmable logic controller, a material cylinder, a cutting device, a tray and a weighing sensor, wherein an accommodation space and a discharge hole are formed in the material cylinder; a heating tube is arranged inside the accommodation space; the cutting device and the tray are sequentially arranged from top to bottom below the discharge hole; the tray is connected with the weighing sensor; the programmable logic controller is electrically connected with the heating tube, the cutting device and the weighing sensor respectively. By adopting the melt flowing velocity testing device, the problems that a sample mass cannot be conveniently recorded, samples can be contaminated in the sampling and recording processes, measurement precision is not accurate enough, and the like can be solved.

Description

technical field [0001] The invention relates to the technical field of detection equipment, in particular to a melt flow rate measuring device. Background technique [0002] Melt flow rate is an important indicator used to measure the fluidity of plastic melt in plastic processing. The melt flow rate meter is an instrument used to measure the melt mass flow rate (MFR), melt volume flow rate (MVR) and melt density of thermoplastic resins. It is not only suitable for polycarbonate, nylon, fluoroplastic, polyaryl sulfone and other engineering plastics with high melting temperature, but also suitable for polyethylene, polystyrene, polypropylene, ABS resin, polyoxymethylene resin and other engineering plastics with low melting temperature. Plastic test. Among them, the working principle of the melt flow rate meter refers to the mass or volume of the thermoplastic melt passing through the standard die every 10 minutes under a certain temperature and load. [0003] However, in t...

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Problems solved by technology

[0003] However, in the prior art, the melt flow rate meter uses weights or other manual methods to weigh samples

This is easy to cause contamination of the sample, and may also affect the final measurement accuracy

Moreover, weights or other manual weighing methods require the experimenter to record the data before calculation, which obviously not only easily causes recording errors, but also prolongs the experimental time and complicates the experimental process

Therefore, the melt flow rate meter of the prior art has the problems of sample contamination, measurement accuracy is affected, and the way of recording the sample quality is inconvenient

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