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Plastic melt PVT (pressure, volume and temperature) characteristic experimental device

An experimental device and melt technology, which is applied in the field of plastic melt PVT characteristic experimental devices, can solve the problems affecting the quality and appearance of plastics, warping and shrinkage of plastic products, and achieve the effects of low cost, uniform heating and high thermal efficiency

Inactive Publication Date: 2015-01-07
CHANGZHOU UNIV
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  • Description
  • Claims
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Problems solved by technology

If you do not pay attention to the influence of plastic PVT characteristics, plastic products may have defects such as warping, shrinkage, bubbles, and defects, which will affect the quality and appearance of plastics

Method used

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  • Plastic melt PVT (pressure, volume and temperature) characteristic experimental device
  • Plastic melt PVT (pressure, volume and temperature) characteristic experimental device

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Experimental program
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Embodiment Construction

[0018] In order to be easier to understand the content, purpose and technical solutions of the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings:

[0019] figure 1 A schematic diagram of the structure of the PVT characteristic experimental device is shown. The entire experimental device consists of four parts, namely a pressure device, a temperature device, a parameter acquisition device and an experimental platform. Before the experiment, prepare the selected experimental plastics in the melt state, and slowly flow into the incubator (14) from the melt inlet (4). The effect of the incubator is to ensure that the melt will not Because of the cooling of the time change, the phenomenon of melt crystallization in the early stage of the experiment is caused, which affects the progress of the experiment. And in order to be close to the real injection molding conditions, the melt flowing in from below wi...

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Abstract

The invention discloses a plastic melt PVT (pressure, volume and temperature) characteristic experimental device. The plastic melt PVT characteristic experimental device comprises a pressure device, a temperature device, a parameter acquisition device and an experimental platform. As a high-molecular polymer, plastic is complicated in characteristics which can be influenced by different ratios of polymers in plastic; meanwhile, in the injection molding production, the quality of a plastic piece is severely influenced by pressure and temperature. The plastic melt PVT characteristic experimental device is simple in structure and capable of conveniently and rapidly acquiring various parameters needed in the experiment and simulating the flow situation of a melt in a runner. The plastic melt PVT characteristic experimental device is mainly used for researching the PVT characteristics of different plastic or high-molecular materials, so that theoretical basis can be provided for selection of plastic in the injection molding production and selection of the temperature and pressure, optimal production parameters can be acquired, the production efficiency can be improved, the quality of the plastic piece can be improved, the cost is reduced, and the significance is great.

Description

technical field [0001] The invention relates to an experimental device for correlation among pressure (P), volume (V) and temperature (T) of plastics. In particular, it is an experimental device for analyzing pressure, density, temperature and other related phenomena during injection molding of thermoplastics. Background technique [0002] So far, plastics, especially thermoplastics, account for an increasing proportion in industrial production, and people's requirements for plastic products are also getting higher and higher. New requirements are put forward for the precision and aesthetics of plastics. This requires fully studying the characteristics of plastics in the injection molding production process, so as to produce various plastic parts more conveniently, efficiently and with high quality. Plastic is a polymer compound composed of polymers and certain additives, and is the largest class of polymer compounds. Plastics of different materials are greatly affected b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/44
Inventor 华同曙郭琛
Owner CHANGZHOU UNIV
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