Long glass fiber filling quantity measuring method in plastic modification processing process

Abstract

The invention relates to a long glass fiber filling quantity measuring method in the plastic modification processing process. Long glass fiber is sampled at a glass fiber material feeding opening of a double-screw extruding machine of melt modified plastics, and the modified plastics are sampled at a modified plastic material collecting opening. Measuring tools comprise a timing stopwatch and an electronic scale. The method comprises the following steps of: 1. after the plastic modification extrusion of the double-screw extruding machine is stable, maintaining all processing parameters unchanged, and respectively sampling long glass fiber at the glass fiber feeding material opening and sampling the modified plastics at the modified plastic material collecting opening in the same sampling time metered by the timing stopwatch; 2. respectively weighing the reducing quantity of the long glass fiber and the producing quantity of the modified plastics in the same metering time by the electronic scale; and 3. calculating the filling quantity of the long glass fiber through dividing the reducing quantity of the long glass fiber by the producing quantity of the modified plastics. The measuring method of the invention is practical and reliable, adopts the simple measuring tools, and has the short measuring period, the whole measuring process can be completed in two minutes, and the measuring error is within one percent of the filling quantity of the glass fiber.

Description

technical field [0001] The invention relates to the measurement of the filling amount of glass fibers, in particular to a method for measuring the filling amount of long glass fibers in the process of plastic modification. Background technique [0002] Most of the existing methods of measuring the filling amount of long glass fibers in the plastic modification process use the combustion method to measure, and the measurement takes about half an hour. It not only needs to provide combustion facilities, consumes energy, and pollutes the atmosphere; it also needs to provide combustion equipment. Material samples are easy to cause material loss and waste, and are not suitable for expensive material measurement. Another method is to calculate the filling amount of glass fiber by measuring parameters such as the main engine speed and feeding speed of the extruder. This method is easily affected by the production raw materials and the stability of the extruder, and the measurement ...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing methods of measuring the filling amount of long glass fibers in the process of plastic modification use the combustion method to measure, and the measurement takes about half an hour. It not only needs to provide combustion facilities, consumes energy, and pollutes the atmosphere; it also needs to provide combustion equipment. Material samples are easy to cause material loss and waste, and are not suitable for expensive material measurement

Another method is to calculate the filling amount of glass fiber by measuring the parameters such as the main machine speed and feeding speed of the extruder. This method is easily affected by the production raw materials and the stability of the extruder, and the measurement error is relatively large.