Pretreatment device and method capable of simultaneously determining hydrophobic and oleophobic characteristics of paper

Abstract

The invention discloses a pretreatment device and a pretreatment method capable of simultaneously determining hydrophobic and oleophobic characteristics of paper. The device comprises two sample needles with the same structure, a sample stage, two sample needle mounting brackets with the same structure and a base, wherein the two sample needle mounting brackets are respectively parallelly and vertically fixed on the base; the two sample needles are respectively fixed on the two sample needle mounting brackets; the sample stage is positioned below the two sample needles, and two ends of the sample stage are respectively mounted on the base through a support frame; a clamping groove used for fixing samples is formed in the surface of the sample stage corresponding to the lower sides of the two sample needles; the sample stage is rotationally connected with the support frame; and a rotary button connected with the sample stage is arranged on one side of the support frame. Water and oil substances are simultaneously titrated by utilizing double sample needles; due to rotation of the sample stage, non-penetrated liquid flows under the gravity action, so that the paper sample sucking water and oil is obtained; and by combining with headspace gas chromatography, the hydrophobic and oleophobic characteristics of the paper are simultaneously determined, and the experimental efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of paper detection, in particular to a pretreatment device and method for simultaneously measuring the hydrophobic and oleophobic properties of paper. Background technique [0002] At present, testing the wetting property of liquid to paper is mainly realized by measuring the contact angle, and the measurement of the contact angle is mainly realized by angle measurement, height measurement or force measurement. These methods require manual and continuous precise operation and observation. There are many human factors in the measurement process, and the accuracy of the data depends to a large extent on the personal skills of the measurer, so there will be large experimental errors. Furthermore, these operations require the use of various optical instruments and mechanical instruments for measurement, the steps are very cumbersome, time-consuming, and the operation is very complicated, which seriously affects the work e...

AI Technical Summary

Problems solved by technology

These methods require manual and continuous precise operation and observation. There are many human factors in the measurement process, and the accuracy of the data depends to a large extent on the personal skills of the measurer, so there will be large experimental errors.

Furthermore, these operations require the use of various optical instruments and mechanical instruments for measurement. The steps are very cumbersome, time-consuming, and the operation is very complicated, which seriously affects the work efficiency and mobility of the operator.

Images