Non-woven filter material gas permeability detection device with improved flame retardancy and flame retardancy detection method thereof

Abstract

The invention discloses a device for improving the flame retardancy of a non-woven filter material, which comprises a tester body, the tester body is provided with a positioning and pushing device, and the positioning and pushing device includes a pushing piece, a supporting shell, a servo motor, and a screw rod and a clamping piece, the push piece is movably connected to the outside of the tester body, the support shell is provided with two, and the support shell is respectively movably connected to the output end of the push piece, and the servo motor is fixedly connected to the outside of the support shell, And the output end of the servo motor passes through the support shell and is fixedly connected to the screw rod, and the output end of the servo motor is connected to the support shell in rotation. The device and process for improving the flame retardancy of the non-woven filter material, through the positioning and pushing device, the non-woven filter material of different sizes The filter paper is placed between the pressing plate and the positioning plate to realize the positioning of the filter paper with the flame retardant, so that the tester body can quickly detect the air permeability of the filter paper, and at the same time realize the comprehensive detection of the air permeability of different parts of the filter paper .

Description

technical field [0001] The invention relates to the technical field of non-woven filter material production, in particular to a non-woven filter material flame retardancy improving device and process. Background technique [0002] At present, the vehicle-mounted filter substrates that have been studied more are all added with a single type of flame retardant. The flame retardants used on filter paper are mostly nitrogen-based and phosphorus-based flame retardants. Nitrogen-based flame retardants tend to make the filter paper yellow. Brittle, poor high temperature aging resistance, phosphorus-based flame retardants have good flame-retardant properties, but phosphorus-based flame retardants are expensive, about three times the price of nitrogen-based flame retardants; The application of composite synergistic effect on filter materials is less, and the addition of different types of flame retardants together is often much better than single addition. [0003] At present, in th...

AI Technical Summary

Problems solved by technology

[0002] At present, the vehicle-mounted filter substrates that have been studied more are all added with a single type of flame retardant. The flame retardants used on filter paper are mostly nitrogen-based and phosphorus-based flame retardants. Nitrogen-based flame retardants tend to make the filter paper yellow. Brittle, poor high temperature aging resistance, phosphorus-based flame retardants have good flame-retardant properties, but phosphorus-based flame retardants are expensive, about three times the price of nitrogen-based flame retardants; The application of composite synergistic effect on filter materials is seldom, and the addition of different types of flame retardants together is often much better than single addition.

[0003] At present, in the in-depth analysis of domestic and foreign flame-retardant vehicle-mounted filter substrates on the market, in the process of analyzing the flame-retardant efficiency of different flame retardants on filter paper, it is necessary to use a gas permeability tester to test the gas permeability of filter paper, so as to detect The relationship between the air permeability and flame retardant performance of filter paper, and because the air permeability tester needs to manually adjust the position of the filter paper continuously during the detection process, and because the number of filter papers to be tested is large, the detection speed is reduced. , we propose a device and process for improving the flame retardancy of non-woven filter materials

Images