KR-102962011-B1 - Specimen holder for accelerated weathering test instrument and accelerated weathering test evaluation method using the same

KR102962011B1KR 102962011 B1KR102962011 B1KR 102962011B1KR-102962011-B1

Abstract

The present invention relates to a specimen holder for an accelerated weathering tester and a method for evaluating accelerated weathering using the same. Specifically, the invention relates to a specimen holder for a accelerated weathering tester that mounts a sheet-type specimen, including wood, paper, fibers, and plastic film, within an accelerated weathering tester, transmits light during the accelerated weathering test, and blocks the attachment of moisture droplets to the specimen, comprising: a frame that receives and supports the specimen and includes a first open area on one side so that the specimen is exposed to the outside; a frame holder that inserts and fixes the frame and includes a second open area on one side so that the specimen is exposed to the outside; a quartz glass plate disposed on the front of the frame holder to prevent the penetration of moisture droplets into the specimen; a quartz glass plate support member that supports the quartz glass plate disposed on the front of the frame holder; and a frame holder mounting member that mounts the frame holder to the accelerated weathering tester.

Inventors

김명남
이선명

Dates

Publication Date: 20260508
Application Date: 20250725

Claims (14)

A specimen holder for mounting a sheet-type specimen, including wood, paper, fiber, or plastic film, inside an accelerated weathering tester, which transmits light during the accelerated weathering test but blocks the adhesion of moisture droplets to the specimen, A frame that accommodates and supports a specimen, including a first open area on one side so that the specimen is exposed to the outside; A frame holder that inserts and fixes the above frame, including a second open area on one side so that a specimen is exposed to the outside; A quartz glass plate positioned on the front of the above-mentioned frame holder to prevent the penetration of moisture droplets into the specimen; A quartz glass plate support member that supports a quartz glass plate positioned on the front of the frame holder; and A frame holder mounting part for mounting the above-mentioned frame holder to an accelerated weathering tester; comprising, The accelerated weathering tester comprises: a chamber; a light source positioned at the center of the chamber to irradiate artificial light onto a specimen; and a rotating rack formed to surround the light source and on which the specimen is mounted; and a specimen holder for an accelerated weathering tester, wherein the frame holder mounting portion is mounted on the rotating rack of the accelerated weathering tester.
In paragraph 1, The above frame is The other side is formed open to accommodate the specimen, and A first outer region formed on one surface to surround the first open region and support the specimen; and A specimen holder for an accelerated weathering tester, comprising: a first side edge portion defining a first internal space (131) in which a specimen is accommodated between one side and the other side.
In paragraph 1, The above frame holder A second outer region formed on one surface surrounding the second open region and supporting the front of the frame; A second side edge portion having one side open to accommodate a frame, forming a second internal space between one side and the other side, wherein the second side edge portion is open to accommodate a frame in the second internal space; and A specimen holder for an accelerated weathering tester, comprising: a frame support member formed on the other side to support the rear surface of a frame accommodated in the second internal space.
In paragraph 1, The above quartz glass plate support A first support member having a first insertion groove formed protruding from a first side of one side of the frame holder and into which at least a portion of the side of the quartz glass plate is inserted; and A second support member having a second insertion groove formed protruding from the lower portion of one side of the frame holder and into which the lower portion of the quartz glass plate is inserted; The above quartz glass plate is slidably inserted from the second side of one face of the above frame holder and supported by the first and second support members, forming a specimen holder for an accelerated weathering tester.
In paragraph 1, A specimen holder for an accelerated weathering tester, further comprising: a rotating clip that is rotatably coupled to the frame holder and secures a quartz glass plate placed on the quartz glass plate support.
In paragraph 5, A specimen holder for an accelerated weathering tester, wherein the above-mentioned rotating clip is positioned so that the quartz glass plate is received by the quartz glass plate support, or positioned to prevent the quartz glass plate placed on the quartz glass plate support from detaching from the specimen holder.
In paragraph 4, The above frame holder mounting part A first frame holder mounting portion formed to protrude forward from the top of the frame holder in a ring shape; and A specimen holder for an accelerated weathering tester, comprising: a second frame holder mounting portion formed to protrude forward from the bottom of the frame holder in a ring shape.
In Paragraph 7, A specimen holder for an accelerated weathering tester, wherein the first and second frame holder mounting portions are formed to protrude relatively further from one side of the frame holder than the first and second support portions.
In paragraph 1, A specimen holder for an accelerated weathering tester, wherein the specimen inserted in the frame holder and the quartz glass plate inserted in the quartz glass plate support are spaced apart by 0.1 to 2 mm.
In paragraph 1, The above quartz glass plate is a specimen holder for an accelerated weathering tester having a thickness of 1 to 3.3 mm.
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In paragraph 1, The above specimen is a specimen holder for an accelerated weathering tester, which is a colored specimen to which traditional Dancheong pigments for cultural heritage restoration are applied.
Method for evaluating accelerated weathering resistance of a thin plate specimen using the specimen holder of claim 1.
In Paragraph 13, The above-mentioned thin plate specimen is a colored specimen to which traditional Dancheong pigments for cultural heritage restoration have been applied, The above accelerated weathering test evaluation method is an accelerated weathering test evaluation method for traditional Dancheong pigments for cultural heritage restoration.

Description

Specimen holder for accelerated weathering test instrument and accelerated weathering test evaluation method using the same The present invention relates to a specimen holder for an accelerated weathering tester and a method for evaluating accelerated weathering using the same. Cultural heritage and traditional buildings incorporating traditional materials, such as Dancheong used to decorate building components with various colors, are exposed to environmental factors like temperature and humidity fluctuations, ultraviolet rays, and air pollution over long periods. This exposure leads to physical damage, such as cracking and peeling, as well as optical and chemical damage, including discoloration and fading. Therefore, to protect cultural heritage and traditional buildings and maintain their value, restoration must be carried out by applying traditional materials of similar quality to the original materials used, such as Dancheong. Meanwhile, for the application of materials replacing traditional materials to cultural heritage or traditional architecture, research on weather resistance testing must be conducted beforehand. Generally, weather resistance tests to evaluate the performance and lifespan of materials are performed using indoor weathering methods with accelerated weathering testers or outdoor exposure tests. Among these, the indoor weathering method evaluates changes in material properties by simulating various climatic conditions that combine the three basic elements of weathering—solar radiation, temperature, and moisture—using a weathering tester; through this, the weather resistance characteristics and expected lifespan of multiple specimens under identical conditions can be determined. In this regard, Non-Patent Document 1 disclosed the results of monitoring changes in the physical properties of the surface of traditional Dancheong pigments using an indoor weathering tester. Meanwhile, to evaluate the weather resistance of sheet-type specimens such as wood, paper or textiles, or plastic films, the test may be performed using a weather resistance tester such as ATLAS’s Weather-O-Meter®, which includes a chamber, a xenon arc lamp simulating natural sunlight located in the center of the chamber, and a rotating rack formed to surround the xenon arc lamp and supporting a specimen holder mounted on the specimen so that the specimen receives artificial light from the lamp, wherein the temperature and moisture conditions inside the chamber are controlled. The specimen holder used in the prior art has a form that includes a frame in which the specimen is inserted and fixed, with one side open so that one side of the specimen is exposed to the outside, and a frame mounting part for mounting the frame to the accelerated weather resistance tester. However, this type of specimen holder has a disadvantage in that it is difficult to use as is for weather resistance evaluation of traditional materials, such as Dancheong, where environmental conditions that prevent direct exposure to rainfall are required, especially when water droplets are generated inside the tester and scatter onto the surface of the specimen exposed to the outside even under conditions without water spray, or when attempting to test specimens with and without water spray simultaneously. As a specimen holder to compensate for these disadvantages, the SL-3T with Glass specimen holder from ATLAS is formed such that a glass plate is inserted into the front end of a frame with one side open so that the specimen is inserted and fixed, but one side of the specimen is exposed to the outside. This structure can partially prevent water droplets from scattering onto the surface of the specimen by the glass plate. However, as shown in FIGS. 10a and 10b, the SL-3T with Glass holder has a ring-shaped mounting part (1600) formed on the front of the frame (1200) to mount the frame (1200) on the rotating rack of the weathering tester, and the glass plate (1300) is formed to be positioned ahead of the mounting part (1600). Therefore, when mounting the specimen holder on the tester, the frame (1200) must first be mounted on the rotating rack of the tester, and then the glass plate (1300) must be mounted, which poses a risk of damage and inconvenience in use when mounting the glass plate. In addition, in this structure, since the distance between the glass plate (1300) and the specimen surface is wide, there is a problem in that a liquid droplet penetrates between the glass plate (1300) and the specimen surface and adheres to the specimen surface. Accordingly, the inventors have improved the specimen holder of a conventional accelerated weathering tester to ensure that artificial light is transmitted to the specimen surface without loss, and that temperature, humidity, and air permeability are maintained while preventing the adhesion of water droplets to the specimen surface caused by water droplet scattering. They have developed a specimen holder and an acc