CN-121978158-A - Method for detecting expansion coefficient of high-temperature toughened glass printing ink and sample preparation die

CN121978158ACN 121978158 ACN121978158 ACN 121978158ACN-121978158-A

Abstract

The invention discloses a method for detecting the expansion coefficient of high-temperature toughened glass printing ink and a sample preparation die, wherein the sample preparation die comprises a compression bar, a die inner core, a die sleeve and a movable base; the compression bar is inserted into the die inner core and is movably connected, the die sleeve is wrapped on the outer surface of the die inner core and is movably connected, and the movable base is positioned at the bottom of the die inner core and the die sleeve in the vertical direction and is movably connected. The error of the test result after sample preparation is not more than +/-0.2, the accuracy is high, the expansion coefficient detection repeatability is good, and the problem that the expansion coefficient of ink existing in the industry cannot be tested or is inaccurate is solved.

Inventors

WANG XIAOLIANG
LIU TIANXIANG
HUANG XIUQING

Assignees

宸光(常州)新材料科技有限公司

Dates

Publication Date: 20260505
Application Date: 20250911

Claims (10)

1. The sample preparation die for detecting the expansion coefficient of the high-temperature toughened glass printing ink is characterized by comprising a compression bar, a die inner core, a die sleeve and a movable base; The compression bar is movably inserted into or pulled out of the die inner core; the die sleeve is movably sleeved outside the die inner core; The movable base is supported at the bottoms of the die inner core and the die sleeve.
2. The sample preparation die for detecting the expansion coefficient of the high-temperature toughened glass ink is characterized in that the compression bar is a T-shaped compression bar, the T-shaped compression bar comprises an upper cross beam and a support bar perpendicular to the upper cross beam, and the support bar of the T-shaped compression bar is detachably connected with a die inner core.
3. The sample preparation die for detecting the expansion coefficient of the high-temperature toughened glass ink is characterized in that the die inner core is of an open-type structure, the die inner core is divided into two parts after being opened, and a charging hole is formed in the middle of the die inner core after the die inner core is divided into two parts.
4. The sample preparation die for detecting the expansion coefficient of high-temperature toughened glass ink according to claim 1, wherein a gasket is further arranged at the bottom of the inner core of the die, and the gasket is detachably connected.
5. The sample preparation die for detecting the expansion coefficient of high-temperature toughened glass ink according to claim 1, wherein the upper end face of the movable base is provided with a mounting structure matched with the die inner core and the die sleeve.
6. The sample preparation die for detecting the expansion coefficient of the high-temperature toughened glass ink according to claim 5, wherein the movable base is integrally cylindrical, the middle part of the installation structure of the movable base is a circular protrusion, and the inner core of the die is positioned and installed.
7. A method for detecting the expansion coefficient of high-temperature toughened glass ink, which is characterized in that a sample preparation die for detecting the expansion coefficient of the high-temperature toughened glass ink is adopted for sample preparation, wherein the sample preparation die is used for preparing samples.
8. The method for detecting the expansion coefficient of the high-temperature toughened glass ink according to claim 7, comprising the following steps: s1, taking uniformly mixed high-temperature toughened glass ink; s2, heating to remove the solvent in the high-temperature toughened glass ink to obtain high-temperature toughened glass ink I; s3, sintering the first high-temperature toughened glass ink to remove organic matters to obtain a second high-temperature toughened glass ink; S4, crushing the high-temperature toughened glass printing ink II, and sieving to obtain solid powder; S5, placing the solid powder into a sample preparation mold for detecting the expansion coefficient of the high-temperature toughened glass ink according to any one of claims 3-6 to prepare a detection sample; S6, placing the detection sample in a thermal expansion instrument to test the thermal expansion coefficient, and finishing detection.
9. The method for detecting the expansion coefficient of the high-temperature toughened glass ink according to claim 7, wherein the method for preparing the sample from the solid powder in the step S5 comprises the following steps: The inner core of the die is smeared with lubricating oil after being opened, and then buckled; Adding solid powder into a charging hole of a die inner core coated with lubricating oil, continuously compacting the solid powder in the charging process, adding the solid powder to a charging limit, inserting a pressing rod into the charging hole, slowly pressurizing the pressing rod to 20-25MPa, maintaining the pressure for 1-3h, releasing pressure, and demolding to obtain a sample; and placing the sample in 430-480 ℃ for heat preservation for 1-3h, and naturally cooling to obtain a detection sample.
10. The method for detecting the expansion coefficient of the high-temperature toughened glass ink according to claim 9, wherein in the process of slowly pressurizing the pressure rod, the pressure rod is taken out and the inner wall of the inner core of the die is cleaned every 5MPa of pressurizing.

Description

Method for detecting expansion coefficient of high-temperature toughened glass printing ink and sample preparation die Technical Field The invention relates to the field of test or analysis materials, in particular to a method for detecting the expansion coefficient of high-temperature toughened glass ink and a sample preparation die Background Along with the development of technology, the heat-resistant temperature required by the application of the ink on the toughened glass is higher and higher, but the expansion coefficient of the ink is required to be clear under the high-temperature environment so as to ensure that the ink can realize perfect operation on the surface of the toughened glass at high temperature. The existing method for detecting the expansion coefficient is low in repeatability and low in reliability, mainly because the high-temperature toughened glass ink is high in sample preparation difficulty in the process of detecting and sample preparation, and detection errors are high. Therefore, the development of a method which is simple in sample preparation, high in repeatability in detection of the expansion coefficient of high-temperature toughened glass ink and accurate in detection is important. The Chinese patent application CN114965554A discloses a thermal expansion coefficient detection device and a detection method, wherein a plurality of samples are selected at different positions of a light aggregate water stabilization layer, the axial deformation and the radial deformation of the samples are detected, the thermal expansion coefficients of the samples are detected by using the thermal expansion coefficient detection device, and the thermal expansion coefficient of the light aggregate water stabilization layer is obtained after data processing, but is not suitable for the detection of the expansion coefficients of powder and liquid materials. The Chinese patent No. 113514539B discloses a method and a device for detecting the temperature resistance and the relative expansion coefficient of a metal surface coating, which can achieve the aim of detecting various parameters such as the temperature resistance, the relative expansion coefficient and the like through a simple heating structure in a detection device, realize digital control on the heating temperature, ensure the accuracy of detection data of an eddy current detection sensor device in temperature change, but have inaccurate detection result on high-temperature-resistant ink. Disclosure of Invention In order to develop a method for detecting the expansion coefficient of high-temperature toughened glass ink with high repeatability and accuracy, the first aspect of the invention provides a sample preparation die for detecting the expansion coefficient of high-temperature toughened glass ink, which comprises a compression bar, a die inner core, a die sleeve and a movable base; The compression bar is movably inserted into or pulled out of the die inner core; the die sleeve is movably sleeved outside the die inner core; The movable base is supported at the bottoms of the die inner core and the die sleeve. As one implementation mode, the compression bar is a T-shaped compression bar, the T-shaped compression bar comprises an upper cross beam and a support bar perpendicular to the upper cross beam, and the support bar of the T-shaped compression bar is detachably connected with the die inner core. The supporting rod of the T-shaped pressing rod pressurizes solid powder in the vertical direction under the action of a press machine, the pressing rod is taken out and the inner wall of the inner core of the die is cleaned after 5MPa of pressurization, and finally the pressure is maintained for 1h, pressure is relieved, and the die is released. As one implementation mode, the die inner core is of an open-type structure, the die inner core is divided into two parts which are identical after opening, and a charging hole is formed in the middle of the die inner core after closing. During operation, the inner core of the die is closed, solid powder is added from the charging hole, a sample is formed along with continuous pressurization, and during demolding, the inner core of the die is opened, and the sample is taken out. As an implementation mode, a gasket is further arranged at the bottom of the inner core of the die, and the gasket is detachably connected. The gasket has certain elasticity, and when pressurizing the solid powder, the solid powder contacts with the gasket, keeps apart the movable base, and the shaping is easy during the pressurization, avoids the sample to scatter and destroy during the dismantlement. As an implementation mode, the upper end face of the movable base is provided with a mounting structure matched with the die inner core and the die sleeve. As an implementation mode, the movable base is integrally a cylinder, the middle part of the installation structure of the movable base is a circular protrusion, and th