INFLUENCE OF PRESSURE ON COAL FREEZING ADHESIVE STRENGTH
Coal is the important basic energy in China,while the coal freezing adhesion seriously restricts with coal mine safe and efficient production in winter. Pressure as a secondary factor of coal freeze condition,it has an important influence on coal freezing adhesive strength. Through the freezing adhe...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Strength
2016-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2016.05.012 |
| _version_ | 1797767957167734784 |
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| author | WANG ChunHua XU HanWen WANG ZhongXian QU Hui |
| author_facet | WANG ChunHua XU HanWen WANG ZhongXian QU Hui |
| author_sort | WANG ChunHua |
| collection | DOAJ |
| description | Coal is the important basic energy in China,while the coal freezing adhesion seriously restricts with coal mine safe and efficient production in winter. Pressure as a secondary factor of coal freeze condition,it has an important influence on coal freezing adhesive strength. Through the freezing adhesive strength test device designed by ourselves,under conditions of- 25 ℃temperature and 3h freezing time,freezing adhesive characteristic of six different materials with moisture content 40% of the coal slime were tested. Studies have shown that pressure usually makes the coal freezing adhesive strength increase,such as Q235,normal freezing adhesive strength of under prepressure is 6. 2 times bigger than under no pressure’s,tangential freezing adhesive strength of under prepressure is 5. 9 times bigger than under no pressure’s. But only PTFE’s normal and tangential freezing adhesive strength under the condition of pressure both do not increase among six materials. In a sense,pressure will increase the hydrophilic material freezing adhesive strength,instead it will reduce the hydrophobic material freezing adhesive strength. The excellent characteristic of PTFE material shows wide application prospect in cold area of coal transportation,it deserves further study. |
| first_indexed | 2024-03-12T20:46:32Z |
| format | Article |
| id | doaj.art-d47366999fa045fda9a6431a47e69ee1 |
| institution | Directory Open Access Journal |
| issn | 1001-9669 |
| language | zho |
| last_indexed | 2024-03-12T20:46:32Z |
| publishDate | 2016-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj.art-d47366999fa045fda9a6431a47e69ee12023-08-01T07:42:55ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692016-01-013896797130596305INFLUENCE OF PRESSURE ON COAL FREEZING ADHESIVE STRENGTHWANG ChunHuaXU HanWenWANG ZhongXianQU HuiCoal is the important basic energy in China,while the coal freezing adhesion seriously restricts with coal mine safe and efficient production in winter. Pressure as a secondary factor of coal freeze condition,it has an important influence on coal freezing adhesive strength. Through the freezing adhesive strength test device designed by ourselves,under conditions of- 25 ℃temperature and 3h freezing time,freezing adhesive characteristic of six different materials with moisture content 40% of the coal slime were tested. Studies have shown that pressure usually makes the coal freezing adhesive strength increase,such as Q235,normal freezing adhesive strength of under prepressure is 6. 2 times bigger than under no pressure’s,tangential freezing adhesive strength of under prepressure is 5. 9 times bigger than under no pressure’s. But only PTFE’s normal and tangential freezing adhesive strength under the condition of pressure both do not increase among six materials. In a sense,pressure will increase the hydrophilic material freezing adhesive strength,instead it will reduce the hydrophobic material freezing adhesive strength. The excellent characteristic of PTFE material shows wide application prospect in cold area of coal transportation,it deserves further study.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2016.05.012Coal;Freezing adhesion;Pressure;Q235;PTFE |
| spellingShingle | WANG ChunHua XU HanWen WANG ZhongXian QU Hui INFLUENCE OF PRESSURE ON COAL FREEZING ADHESIVE STRENGTH Jixie qiangdu Coal;Freezing adhesion;Pressure;Q235;PTFE |
| title | INFLUENCE OF PRESSURE ON COAL FREEZING ADHESIVE STRENGTH |
| title_full | INFLUENCE OF PRESSURE ON COAL FREEZING ADHESIVE STRENGTH |
| title_fullStr | INFLUENCE OF PRESSURE ON COAL FREEZING ADHESIVE STRENGTH |
| title_full_unstemmed | INFLUENCE OF PRESSURE ON COAL FREEZING ADHESIVE STRENGTH |
| title_short | INFLUENCE OF PRESSURE ON COAL FREEZING ADHESIVE STRENGTH |
| title_sort | influence of pressure on coal freezing adhesive strength |
| topic | Coal;Freezing adhesion;Pressure;Q235;PTFE |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2016.05.012 |
| work_keys_str_mv | AT wangchunhua influenceofpressureoncoalfreezingadhesivestrength AT xuhanwen influenceofpressureoncoalfreezingadhesivestrength AT wangzhongxian influenceofpressureoncoalfreezingadhesivestrength AT quhui influenceofpressureoncoalfreezingadhesivestrength |