CN112067389A - Preparation method of soft material-containing detection sample for heat conductivity coefficient determination - Google Patents
Preparation method of soft material-containing detection sample for heat conductivity coefficient determination Download PDFInfo
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- CN112067389A CN112067389A CN202010933497.8A CN202010933497A CN112067389A CN 112067389 A CN112067389 A CN 112067389A CN 202010933497 A CN202010933497 A CN 202010933497A CN 112067389 A CN112067389 A CN 112067389A
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- soft material
- sample
- heat insulation
- hard foam
- foam heat
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- 239000007779 soft material Substances 0.000 title claims abstract description 49
- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000006260 foam Substances 0.000 claims abstract description 46
- 239000012774 insulation material Substances 0.000 claims abstract description 38
- 238000012360 testing method Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 11
- 239000006261 foam material Substances 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims description 8
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 6
- 239000011496 polyurethane foam Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims 5
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000005464 sample preparation method Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/32—Polishing; Etching
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2873—Cutting or cleaving
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a preparation method of a detection sample containing a soft material for measuring a heat conductivity coefficient, and belongs to the field of performance detection of composite materials. According to the method, the peripheral of the detection sample containing the soft material is replaced by the local hard foam heat insulation material, so that the problem that the thickness of the detection sample containing the soft material is reduced after the detection sample containing the soft material is stressed and held in the heat conductivity coefficient determination process is solved, and the accuracy of the heat conductivity coefficient test of the detection sample containing the soft material is improved. In addition, the method of the invention also has the advantages of simplicity, rapidness, convenient operation and the like.
Description
Technical Field
The invention belongs to the field of composite material performance detection, and particularly relates to a preparation method of a soft material-containing detection sample for heat conductivity coefficient determination.
Background
At present, when a thermal conductivity coefficient test is carried out according to GB/T10294-.
However, in the process of testing the thermal conductivity according to the GB/T10294-.
Disclosure of Invention
The invention aims to provide a preparation method of a detection sample containing a soft material for measuring a heat conductivity coefficient, so as to improve the test precision.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a soft material-containing detection sample for measuring the thermal conductivity coefficient comprises the following operation steps:
1) processing and preparing a cut sample containing a soft material according to the test requirement;
2) round holes with the diameter of 10 mm-30 mm are respectively formed at the four corners of the cut sample along the thickness direction, and the distance between the axes of the four holes and the two nearest edges is 20 mm-30 mm;
3) preparing four cylindrical hard foam heat insulation material cushion blocks, wherein the four cylindrical hard foam heat insulation material cushion blocks are made of hard foam materials with heat conductivity coefficients not more than 0.08W/m.k, the height of the four cylindrical hard foam heat insulation material cushion blocks is not less than 1mm larger than that of a round hole of a cut sample, and the outer diameter of the four cylindrical hard foam heat insulation material cushion blocks is 10-33 mm;
4) filling four hard foam heat insulation material cushion blocks into four circular holes of the cut sample respectively, wherein the four hard foam heat insulation material cushion blocks are matched in a through hole of the soft material in an interference manner; the four hard foam heat insulation material cushion blocks are at least 0.5mm higher than the surface of the cut sample with the round hole;
5) polishing the hard foam heat insulation material cushion block to enable the hard foam heat insulation material cushion block to be flush with the surface of the cut sample;
6) and removing the surface debris residues to finish the preparation of the detection sample containing the soft material for measuring the thermal conductivity.
The invention relates to a preparation method of a soft material-containing detection sample for measuring thermal conductivity, which is characterized by comprising the following steps: the detection sample containing the soft material is made of a soft material; the round hole of the cut sample is a through hole in the thickness direction; the hard foam heat insulation material cushion block is of a cylindrical structure with the same outer diameter, and the outer diameter of the hard foam heat insulation material cushion block is 1-3 mm larger than the diameter of the circular hole.
The invention relates to a preparation method of a soft material-containing detection sample for measuring thermal conductivity, which is characterized by comprising the following steps: the detection sample containing the soft material comprises a soft material layer and a hard material layer; the round hole of the cut sample is a through hole in the thickness direction; the hard foam heat insulation material cushion block is composed of an upper section of coaxial cylinder and a lower section of coaxial cylinder with different outer diameters, wherein the outer diameter of the cylinder with the larger outer diameter is 1-3 mm larger than the diameter of the circular hole; and the outer diameter of the cylinder with the smaller outer diameter is the same as the diameter of the circular hole.
The invention relates to a preparation method of a soft material-containing detection sample for measuring thermal conductivity, which is characterized by comprising the following steps: the detection sample containing the soft material comprises a soft material layer and a hard material layer; the round hole of the cut sample is only formed on the soft material layer; the hard foam heat insulation material cushion block is of a cylindrical structure with the same outer diameter, and the outer diameter of the hard foam heat insulation material cushion block is 1-3 mm larger than the diameter of the circular hole.
The invention relates to a preparation method of a soft material-containing detection sample for measuring thermal conductivity, which is characterized by comprising the following steps: the distance between the axis of the cut sample and the two nearest edges is equal.
The invention relates to a preparation method of a soft material-containing detection sample for measuring thermal conductivity, which is characterized by comprising the following steps: the hard foam heat insulation material cushion block is made of hard polyurethane foam materials or hard phenolic foam materials.
According to the method, the peripheral of the detection sample containing the soft material is replaced by the local hard foam heat insulation material, so that the problem that the thickness of the detection sample containing the soft material is reduced after the detection sample containing the soft material is stressed and held in the heat conductivity coefficient determination process is solved, and the accuracy of the heat conductivity coefficient test of the detection sample containing the soft material is improved. In addition, the method of the invention also has the advantages of simplicity, rapidness, convenient operation and the like.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Wherein, 1-cutting a sample, and 2-forming a hard foam heat insulation material cushion block.
Detailed Description
For the understanding of the present invention, the technical solutions of the present invention will be described below with reference to the accompanying drawings and examples for the understanding of those in the field of heat insulation materials and related tests. The following specific procedures are not limited to the type and thickness of the sample of the soft heat insulating material, the position and size of the hole to be formed, the tool to be used for forming the hole, the type and size of the hard foam heat insulating material, and the tool to be used for cutting and polishing the hard foam heat insulating material.
Example 1
The test sample of this example comprises a cut sample 1 and a rigid foam insulation pad 2, as shown in FIG. 1.
The cut sample 1 was made of a flexible polyethylene foam material, and had outer dimensions of 300mm × 300mm × 10mm, and round through holes having a diameter of 10mm were formed in the thickness direction at each of the four corners and 20mm from the nearest two sides.
The hard foam heat insulation material cushion block 2 is made of hard polyurethane foam material with the heat conductivity coefficient of 0.08W/m.k, is cylindrical, has the height of 10mm and the diameter of 11 mm.
And the hard foam heat insulation material cushion blocks 2 are placed in the four through holes at the corners of the cut sample 1 in a manner of interference fit and two flush surfaces.
The test sample preparation method of this example is as follows:
step 1) a flexible polyethylene foam board with the thickness of 10mm is cut and processed into a cut sample 1 with the thickness of 300mm multiplied by 10 mm.
And step 2) respectively opening circular through holes with the diameter of 10mm at four corners of the cut sample 1 along the thickness direction by means of a hole opener, as shown in FIG. 1. The distance between the axes of the four through holes and the two nearest edges is 20 mm.
And 3) preparing 4 cylindrical hard foam heat insulation material cushion blocks 2 with the height of 12mm and the diameter of 11mm from the hard polyurethane foam material.
And 4) respectively filling 4 hard foam heat-insulating material cushion blocks 2 into 4 circular through holes of the cut sample 1 in an interference fit manner, wherein each end of each cushion block is 1mm higher than the surface of the cut sample 1.
And 5) polishing the hard foam heat insulation material cushion block 2 to enable the hard foam heat insulation material cushion block to be flush with the upper surface and the lower surface of the cut sample 1.
And step 6) removing the scraps and residues on the surface of the cut sample 1 to finish the preparation of the detection sample of the embodiment.
Example 2
The test sample of this example includes a cut sample 1 and a cushion block 2 of a rigid foam heat insulating material.
Cutting a sample 1, wherein the sample comprises a soft material layer and a hard material layer, the external dimension is 300mm multiplied by 12mm, the soft material layer is 7mm thick and is made of soft EVA foam material; the hard material layer is 8mm thick and made of ceramic materials. And circular through holes with the diameter of 30mm are respectively arranged at the positions of four corners and 30mm away from the two nearest sides along the thickness direction.
The hard foam heat insulation material cushion block 2 is made of a hard phenolic foam material with the heat conductivity coefficient of 0.06W/m.k, and is composed of an upper section and a lower section of coaxial cylindrical structures, wherein the upper section of cylindrical structure is 8mm high and 30mm in diameter, and the lower section of cylindrical structure is 7mm high and 33mm in diameter.
And the hard foam heat insulation material cushion blocks 2 are placed in the four through holes at the corners of the cut sample 1 in a manner of interference fit and two flush surfaces.
The test sample preparation method of this example is as follows:
step 1) a composite sample made of a 7mm thick EVA foam layer and an 8mm thick ceramic layer was processed into a cut sample 1 with dimensions 300mm x 15 mm.
And 2) adopting a water jet cutting processing mode to respectively open circular through holes with the diameter of 30mm at four corners of the cut sample 1 along the thickness direction. The distance between the axes of the four through holes and the two nearest edges of the cut sample 1 are both 30 mm.
And 3) preparing 4 rigid polyurethane foam cushion blocks 2 with the height of 16mm and the diameter of 30mm from rigid phenolic foam materials, wherein the rigid polyurethane foam cushion blocks are formed by an upper section of cylindrical structure and a lower section of cylindrical structure which are coaxial, the upper section of cylindrical structure is 8.5mm high and 30mm in diameter, and the lower section of cylindrical structure is 7.5mm high and 33mm in diameter.
Step 4), respectively filling 4 hard foam heat-insulating material cushion blocks 2 into 4 circular through holes of the cut sample 1 in an interference fit manner; wherein the lower section of cylindrical structure is positioned in the soft material layer of the cut sample 1, and the upper section of cylindrical structure is positioned in the hard material layer of the cut sample 1; and polishing the hard foam heat insulation material cushion block 2 to enable the hard foam heat insulation material cushion block to be flush with the upper surface and the lower surface of the cut sample 1.
And 5) removing the scrap residues on the surface of the cut sample 1 to finish the preparation of the 1 soft heat insulation material sample with the heat conductivity coefficient.
Example 3
The difference from the second embodiment is that:
the round through-hole of sample 1 was cut only in the soft material layer.
The cushion block 2 made of the hard foam material is cylindrical, and has the height of 7.5mm and the diameter of 33 mm.
Claims (6)
1. A preparation method of a soft material-containing detection sample for measuring the thermal conductivity coefficient comprises the following operation steps:
firstly, processing and preparing a cutting sample (1) containing soft materials according to test requirements;
round holes with the diameter of 10-30 mm are respectively formed at the four corners of the cut sample (1) along the thickness direction, and the distance between the axes of the four holes and the two nearest edges is 20-30 mm;
preparing four cylindrical hard foam heat insulation material cushion blocks (2), wherein the four cylindrical hard foam heat insulation material cushion blocks are made of hard foam materials with heat conductivity coefficients not more than 0.08W/m.k, are not less than 1mm higher than the circular holes of the cut samples (1), and have outer diameters of 10-33 mm;
filling four hard foam heat insulation material cushion blocks (2) into four circular holes of the cut sample (1) respectively, wherein the four hard foam heat insulation material cushion blocks are matched in a clearance fit mode in the through holes of the soft material; the four hard foam heat insulation material cushion blocks (2) are at least 0.5mm higher than the surface of the cut sample (1) with the round hole;
polishing the hard foam heat-insulating material cushion block (2) to enable the hard foam heat-insulating material cushion block to be flush with the surface of the cut sample (1);
sixthly, removing the surface debris residue to finish the preparation of the detection sample containing the soft material for measuring the thermal conductivity coefficient.
2. The method for preparing a soft material-containing test sample for thermal conductivity measurement according to claim 1, wherein: the detection sample containing the soft material is made of a soft material; the circular hole of the cut sample (1) is a through hole in the thickness direction; the hard foam heat insulation material cushion block (2) is of a cylindrical structure with the same outer diameter, and the outer diameter of the cylindrical structure is 1-3 mm larger than the diameter of the circular hole.
3. The method for preparing a soft material-containing test sample for thermal conductivity measurement according to claim 1, wherein: the detection sample containing the soft material comprises a soft material layer and a hard material layer; the circular hole of the cut sample (1) is a through hole in the thickness direction; the hard foam heat insulation material cushion block (2) is composed of an upper section of coaxial cylinder and a lower section of coaxial cylinder with different outer diameters, wherein the outer diameter of the cylinder with the larger outer diameter is 1-3 mm larger than the diameter of the circular hole; and the outer diameter of the cylinder with the smaller outer diameter is the same as the diameter of the circular hole.
4. The method for preparing a soft material-containing test sample for thermal conductivity measurement according to claim 1, wherein: the detection sample containing the soft material comprises a soft material layer and a hard material layer; the round holes of the cut sample (1) are only formed on the soft material layer; the hard foam heat insulation material cushion block (2) is of a cylindrical structure with the same outer diameter, and the outer diameter of the cylindrical structure is 1-3 mm larger than the diameter of the circular hole.
5. The method for preparing a soft material-containing test sample for thermal conductivity measurement according to claim 1, wherein: the distance between the axis of the cut sample (1) and the two nearest edges is equal.
6. The method for producing a soft material-containing test specimen for thermal conductivity measurement according to any one of claims 1 to 5, characterized in that: the hard foam heat insulation material cushion block (2) is made of hard polyurethane foam materials or hard phenolic foam materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010933497.8A CN112067389A (en) | 2020-09-08 | 2020-09-08 | Preparation method of soft material-containing detection sample for heat conductivity coefficient determination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010933497.8A CN112067389A (en) | 2020-09-08 | 2020-09-08 | Preparation method of soft material-containing detection sample for heat conductivity coefficient determination |
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| Publication Number | Publication Date |
|---|---|
| CN112067389A true CN112067389A (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010933497.8A Pending CN112067389A (en) | 2020-09-08 | 2020-09-08 | Preparation method of soft material-containing detection sample for heat conductivity coefficient determination |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1410765A (en) * | 2001-10-10 | 2003-04-16 | 株式会社日立制作所 | Resin thermal impedance testing method and tester using same |
| CN102288641A (en) * | 2011-08-18 | 2011-12-21 | 中国飞机强度研究所 | Method for measuring high temperature thermal conductivity coefficient |
| CN104535609A (en) * | 2014-12-26 | 2015-04-22 | 怡维怡橡胶研究院有限公司 | Device for determining heat-conductivity coefficient |
| CN110044955A (en) * | 2019-02-15 | 2019-07-23 | 上海海事大学 | Sample holder and measurement method for steady state method measurement creamy material heating conduction |
-
2020
- 2020-09-08 CN CN202010933497.8A patent/CN112067389A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1410765A (en) * | 2001-10-10 | 2003-04-16 | 株式会社日立制作所 | Resin thermal impedance testing method and tester using same |
| CN102288641A (en) * | 2011-08-18 | 2011-12-21 | 中国飞机强度研究所 | Method for measuring high temperature thermal conductivity coefficient |
| CN104535609A (en) * | 2014-12-26 | 2015-04-22 | 怡维怡橡胶研究院有限公司 | Device for determining heat-conductivity coefficient |
| CN110044955A (en) * | 2019-02-15 | 2019-07-23 | 上海海事大学 | Sample holder and measurement method for steady state method measurement creamy material heating conduction |
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