| Air-lubricated Shear Die and Its Application to Short Fibre-reinforced Rubber Hose |
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| DOI： |
| Key Words: air lubrication；shear die；short fibre-reinforced；rubber hose |
| Author Name | Affiliation | | Qian Bainian | Beijing University of Chemical Technology | | Tong Yuqing | Beijing University of Chemical Technology | | Wang Chuansheng | Beijing University of Chemical Technology | | Qu Xiongwei | Beijing University of Chemical Technology |
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| Abstract: |
| A thin air film formed between rubber and die wall during extrusion of rubber can not only reduce the flow resistance and increase the output but also reduce the die swell. By means of the air-lubricated shear die，the short fibre orientation in hoop direction can be achieved by rotating a mandrel in short fibre reinforced rubber hose extrusion to increase the burst strength of the hose without unstable extrusion due to the extrudate torsion by rotating mandrel. The feasibility of using air lubrication to eliminate the extrudate rotation is theoretically predicted through the analysis of flow field. The test results of short fibre-reinforced rubber hose produced with the air-lubricated shear die is described. |
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