High-temperature vacuum tabletting equipment for polymer

Abstract

The invention discloses a high-temperature vacuum tabletting equipment for polymer. The high-temperature vacuum tabletting equipment comprises a top plate, a lower mold cushion plate, a screw rod sleeve, a screw rod, a motor, a vacuum pump and a heating rod, the top plate is connected with a bottom plate through a plurality of sets of tiebars, an upper mold heat insulation plate is arranged on thelower end surface of the top plate, an upper mold is arranged on the lower end surface of the upper mold heat insulation plate, an upper mold cooling channel is arranged on the upper mold, an elasticcorrugated pipe is arranged on each of the outer sides of the upper mold heat insulation plate and the upper mold in a sleeving mode, the screw rod sleeve is connected with the screw rod to form a synchronous rotation structure so as to drive the lower mold cushion plate to move, the screw rod is rotatably connected with a mounting bracket arranged on each tiebar through a screw rod fixing base,the screw rod is connected with a speed reducer through a coupling, a lower mold cooling channel and a pressure sensor are arranged on a lower mold arranged on the lower mold cushion plate, a sealed cavity is formed among the lower mold, the elastic corrugated pipes and the top plate, and a vacuumizing hole for connecting the air inlet end of the vacuum pump is arranged on the cavity. According tothe high-temperature vacuum tabletting equipment, heating of the vacuum environment for raw materials to be processed can be improved, the heating temperature is high, and 10 tons of pressure can beprovided for meeting the needs of tabletting.

Description

technical field [0001] The invention relates to the technical field of high polymer tabletting equipment, in particular to high-temperature vacuum tabletting equipment for high polymers. Background technique [0002] Special functional polymer materials represented by polyether ether ketone (PEEK) are widely used in aerospace, military and other fields. Polymer sheet is the basic form for the research of the properties of this kind of material, and high-temperature vacuum tableting equipment is the necessary equipment for preparing this sheet. [0003] The general temperature rise range of existing tableting equipment is 300°C, but the melting temperature of some special functional polymer materials is in the range of 330°C to 450°C, so ordinary tableting equipment cannot meet the needs of research on such materials; [0004] At the same time, ordinary sealing rings are made of nitrile rubber or fluororubber, and the maximum temperature resistance is 100°C and 190°C respect...

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Problems solved by technology

[0005] In addition, the viscosity of high-temperature special functional materials is relatively high, and the molding process requires a large molding force

The existing hydraulic power system has a large force, but it is large in size, has many parts, oil leakage has occurred, and maintenance is complicated; while the output force provided by the general electric cylinder is small, it is not suitable for thermoforming of high-viscosity polymer materials

[0006] Therefore, on the whole, the existing equipment has a low molding temperature and cannot provide sealing at high temperatures, and the power system is complex or the output force is small, which cannot meet the high-temperature molding of some special polymer materials;

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