Method for measuring polyethylene inserting and twisting net sheet performance for cultivation and dragnet
A measurement method and mesh technology, applied in measuring devices, strength characteristics, textile testing, etc., can solve problems such as incorrect test results, restrictions on the sustainable and healthy development of fishery engineering, and hidden dangers in fishery production
Inactive Publication Date: 2011-11-16
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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Problems solved by technology
Any lack and imperfection of the determination method will inevitably lead to incorrect test results, which not only brings confusion to farmers in choosing polyethylene twisted mesh materials for breeding and fishing, but also brings hidden dangers to fishery production and restricts fishery production. Sustainable and Healthy Development of Engineering
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[0011] The present invention is aimed at atmospheric conditions, test conditions, sampling and sample processing, measurement methods, data processing and result representation that affect the performance test results of polyethylene twisted mesh for farming and fishing, and describes the best implementation mode of the present invention in conjunction with the accompanying drawings .
[0012] Atmospheric conditions: During the performance test of the mesh, the atmospheric conditions in the laboratory are controlled at a temperature of (20±2)°C and a humidity of (65±2)%.
[0013] State of the sample: the dry sample should be kept at least 24 hours under the atmospheric conditions of temperature (20±2)℃ and humidity (65±2)%, and the wet sample should be kept in the container of water temperature (20±2)℃ for at least Soak for 24 hours, so that there is no significant difference in the breaking strength and elongation at break of the mesh after soaking for a longer time. In order...
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Abstract
The invention discloses a performance test method for polyethylene inserting-twisting netting used for culture and fishing. The performance of the polyethylene inserting-twisting netting is needed to be correctly tested. The invention comprises sampling of a sample, clipping of the sample, sample humidity conditioning to balance and a sample performance test. The invnetion is characterized in that the part of the sample above the position having the distance of 10 cm with the edge of the netting is got; a dry state sample carries out humidity conditioning to balance for 24 h under the atmospheric condition with the temperature of (20 plus / minus 2) DEG C and the humidity of (65 plus / minus 2) percent, as well as a wet state sample is soaked for 24 h in a vessel with the water temperature of(20 plus / minus 2) DEG C; the length of the sample between two clamps is 0.50 m in a longitudinal (or latitudinal) monofilament rupture strength and breaking elongation test, the distance between two clamps is 0.20 m in a netting rupture strength and breaking elongation test, the sample is forced with speical pre-tension, and the test is carried out on the sample under a set time; efficient test times of the tests are all more than or equal to 20 times, and corresponding arithmetic averages are calculated. The invention is used for the performance test method for the polyethylene inserting-twisting netting used for the culture and the fishing.
Description
technical field [0001] The invention relates to a method for measuring the performance of an polyethylene twisted mesh sheet. Background technique [0002] The weft thread is inserted between the strands of the warp thread, and the mesh formed by twisting the warp thread is called an inserted twist mesh. The surface of the inserted twisted mesh is relatively flat and smooth, and the water filtration is good. It is used in rivers and lakes aquaculture net cages, harbor shellfish aquaculture net cages, paddy field or pond aquaculture fences, shellfish aquaculture cages, fishing nets for small sea and fresh water fishing gear, and building safety. It is widely used in nets and insect nets for agriculture and forestry. Practice has proved that the twisted net is more suitable for making nets for breeding and fishing gear. With the expansion of the application field of polyethylene twisted mesh for farming and fishing, many domestic net factories are producing and distributing ...
Claims
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IPC IPC(8): G01N33/36G01N1/04G01N3/00G01N5/00
Inventor 石建高王鲁民姜泽明
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI