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The performance of the modified
by：CSSSLD
2021-01-23
Glass beads and carbon fiber has a little influence on the frictional coefficient of ultra-high molecular weight polyethylene, talcum powder and glass fiber in ultra-high molecular weight polyethylene but not increase too much friction coefficient, add ptfe make less friction coefficient, reducing the extent is larger than the glass fiber and carbon fiber.
In order to make the ultra-high molecular weight polyethylene plastic injection processing application in various fields, fully study of ultra-high molecular weight polyethylene in different industrial and mining conditions of wear resistance, the need for rigorous experiments.
impact strength with the increasing of temperature and larger, but reach maximum at 25 ℃ or so, and then decreases with the increasing of temperature, and even at 200 ℃ below zero still has a certain impact strength. The tensile strength and yield strength are obviously decreased with the increase of temperature. Ultra-high molecular weight polyethylene used for mechanical transmission gear, sliding bearing, at the moment of friction and wear mechanism and the industrial and mining conditions and the M - Wear testing machine for ring / 200 similar test condition, therefore in the M - 200 ring/block wear testing machine test.
under the oil free experiment of five kinds of packing, adding talc and glass fiber increases the friction coefficient of ultra-high molecular weight polyethylene, adding glass beads and carbon fiber on the friction coefficient of ultra-high molecular weight polyethylene almost had no effect. Add ptfe made of ultra-high molecular weight polyethylene, and slightly lower friction coefficient. Under the drops of oil lubrication, the friction coefficient of ultra-high molecular weight polyethylene than the coefficient of friction when oil-free lubrication significantly reduced, about 1. 4 times.
the wear-resisting properties of ultra-high molecular weight polyethylene at home and abroad by slurry abrasion method will be compared with other materials to the test results. Specimen to clean before weighing, cleaning agent for acetone. Cleaning time generally depends on the degree of specimen size and the dirt, the cleaning time for 20 min experiment. Due to the running time is too long, plastic melting phenomenon in a fever, so the running time of 12 min.
general engineering plastics modified with inorganic filler, not more than 30%, the proportion of the packing after a study found that if packing material is more than 30% sharp decline in the impact strength, wear resistance lower instead. No matter which kind of packing, when the proportion of added & le; 25%, and the erosion rate decreases with increase in proportion to the packing, the wear resistance improved. Packing in adding ratio is small, ultra-high molecular weight polyethylene wear resistance increased significantly, the proportion of the packing is greater than 20% after wear resistance increase slowly, is not obvious.
with the increase of relative molecular mass of ultra-high molecular weight polyethylene wear resistance increase injection molding processing, elongation decreases with the increase of relative molecular mass, and the yield strength along with the increase of relative molecular mass are falling, maximum intensity increases with the increase of relative molecular mass and slightly. Impact strength increases with the increase of relative molecular mass and the relative molecular mass peaked around 3 million, after more than 3 million or so, instead of down.
add ptfe, talcum powder, although the wear-resisting performance is improved, but the result is bad. After adding carbon fiber, glass beads, glass fiber wear is significantly reduced, wear resistance is greatly increased, the effect is obvious. Three kinds of fillers on the improvement of ultra-high molecular weight polyethylene wear resistance degree is quite, but the three packing price six to one, glass beads in this three kinds of packing price is low, the price of glass beads is only part of the glass fiber - 1/6 About 1/8, about 1/260 of the carbon fiber, ultra-high molecular weight polyethylene is about 1/7 of the raw materials, so it can be seen that adding glass beads can improve the wearability of ultra-high molecular weight polyethylene and can greatly reduce the cost, can be said to be the ideal modified filler.
more excellent articles: packing modification process and performance tests, click directly.
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impact strength with the increasing of temperature and larger, but reach maximum at 25 ℃ or so, and then decreases with the increasing of temperature, and even at 200 ℃ below zero still has a certain impact strength. The tensile strength and yield strength are obviously decreased with the increase of temperature. Ultra-high molecular weight polyethylene used for mechanical transmission gear, sliding bearing, at the moment of friction and wear mechanism and the industrial and mining conditions and the M - Wear testing machine for ring / 200 similar test condition, therefore in the M - 200 ring/block wear testing machine test.
under the oil free experiment of five kinds of packing, adding talc and glass fiber increases the friction coefficient of ultra-high molecular weight polyethylene, adding glass beads and carbon fiber on the friction coefficient of ultra-high molecular weight polyethylene almost had no effect. Add ptfe made of ultra-high molecular weight polyethylene, and slightly lower friction coefficient. Under the drops of oil lubrication, the friction coefficient of ultra-high molecular weight polyethylene than the coefficient of friction when oil-free lubrication significantly reduced, about 1. 4 times.
the wear-resisting properties of ultra-high molecular weight polyethylene at home and abroad by slurry abrasion method will be compared with other materials to the test results. Specimen to clean before weighing, cleaning agent for acetone. Cleaning time generally depends on the degree of specimen size and the dirt, the cleaning time for 20 min experiment. Due to the running time is too long, plastic melting phenomenon in a fever, so the running time of 12 min.
general engineering plastics modified with inorganic filler, not more than 30%, the proportion of the packing after a study found that if packing material is more than 30% sharp decline in the impact strength, wear resistance lower instead. No matter which kind of packing, when the proportion of added & le; 25%, and the erosion rate decreases with increase in proportion to the packing, the wear resistance improved. Packing in adding ratio is small, ultra-high molecular weight polyethylene wear resistance increased significantly, the proportion of the packing is greater than 20% after wear resistance increase slowly, is not obvious.
with the increase of relative molecular mass of ultra-high molecular weight polyethylene wear resistance increase injection molding processing, elongation decreases with the increase of relative molecular mass, and the yield strength along with the increase of relative molecular mass are falling, maximum intensity increases with the increase of relative molecular mass and slightly. Impact strength increases with the increase of relative molecular mass and the relative molecular mass peaked around 3 million, after more than 3 million or so, instead of down.
add ptfe, talcum powder, although the wear-resisting performance is improved, but the result is bad. After adding carbon fiber, glass beads, glass fiber wear is significantly reduced, wear resistance is greatly increased, the effect is obvious. Three kinds of fillers on the improvement of ultra-high molecular weight polyethylene wear resistance degree is quite, but the three packing price six to one, glass beads in this three kinds of packing price is low, the price of glass beads is only part of the glass fiber - 1/6 About 1/8, about 1/260 of the carbon fiber, ultra-high molecular weight polyethylene is about 1/7 of the raw materials, so it can be seen that adding glass beads can improve the wearability of ultra-high molecular weight polyethylene and can greatly reduce the cost, can be said to be the ideal modified filler.
more excellent articles: packing modification process and performance tests, click directly.
http://www。 csssld。 cn//html/2016/Info_1216/434。 HTML
nantong on suye's official website: http://www. csssld。 cn//
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