CN-224210500-U - Double-screw extrusion device for crosslinked composite resin

CN224210500UCN 224210500 UCN224210500 UCN 224210500UCN-224210500-U

Abstract

The utility model discloses a double-screw extrusion device for crosslinked composite resin, which comprises: the utility model relates to the technical field of composite resin production, in particular to a double-helix efficient mixing structure, which comprises a double-feeding pushing threaded rod coaxially and reversely rotating, and is matched with a gear set to synchronously drive, so that a three-dimensional shearing flow field is formed in the T-shaped extruding barrel by ensuring that the mixing uniformity is improved by 40% compared with that of a traditional single-screw device, and the device is matched with a flaring design of a horn-shaped feeding block to effectively eliminate the bridging phenomenon of the material and realize continuous stable feeding.

Inventors

LOU YAN
SUN SIYAN
ZHU SUNJIAN

Assignees

天津斯多福新材料研发有限公司

Dates

Publication Date: 20260508
Application Date: 20250609

Claims (6)

1. The double-screw extrusion device for the crosslinked composite resin comprises a supporting table, a processing bracket, a T-shaped extrusion cylinder and an extrusion mixing structure, wherein the processing bracket is arranged on the supporting table, the T-shaped extrusion cylinder is arranged on the processing bracket and the supporting table, and the extrusion mixing structure is arranged on the T-shaped extrusion cylinder; The pair of feeding threaded rods are inserted in parallel on the inner sides of the T-shaped extrusion barrels, the feeding gear sets are installed on the pair of feeding threaded rods, the driving ends of the pushing driving machines are connected to the feeding gear sets, the horn-shaped feeding blocks are installed on the inner sides of the T-shaped extrusion barrels, the tooth-mounted feeding pipes are evenly inserted in the inner sides of the T-shaped extrusion barrels, the feeding boxes are installed on the T-shaped extrusion barrels, the feeding threaded pipes are inserted in the feeding boxes, the feeding threaded rods are respectively and movably inserted in the inner sides of the feeding threaded pipes, the feeding gear boxes are sleeved on the feeding threaded pipes, the driving ends of the feeding driving machines are connected to the feeding gear boxes, the humidity sensor is installed on the inner sides of the T-shaped extrusion barrels, the humidity adjusting assembly is installed on the inner sides of the T-shaped extrusion barrels, and the feeding pressing plates are installed on the feeding threaded rods.
2. The twin-screw extrusion device for crosslinked composite resin according to claim 1, wherein the humidity adjusting component comprises a U-shaped cooling tank, a cooler, a cooling liquid, a transfer tank and a transfer pump; The U-shaped cooling box is sleeved on the inner side of the T-shaped extrusion cylinder, the transfer box is connected to the inner side of the U-shaped cooling box through a pipeline, the cooler and the cooling liquid are arranged on the inner side of the transfer box, and the transfer pump is arranged on the transfer box.
3. The twin-screw extrusion device for crosslinked composite resin according to claim 2, wherein the feeding box is provided with a liquid replenishing box and a carrying pump.
4. A twin-screw extrusion device for crosslinked composite resin according to claim 3, wherein the T-shaped extrusion barrel is provided with a discharge pipe, and an inner diameter regulator is provided on the inner side of the discharge pipe.
5. The twin-screw extrusion device for crosslinked composite resin according to claim 4, wherein a booster pump is provided on the T-type extrusion cylinder.
6. The twin-screw extrusion device for crosslinked composite resin according to claim 5, wherein a pressure sensor is provided on the inner side of the T-shaped extrusion cylinder.

Description

Double-screw extrusion device for crosslinked composite resin Technical Field The utility model relates to the technical field of composite resin production, in particular to a double-screw extrusion device for crosslinked composite resin. Background Polyarylene sulfide (PAS) special engineering plastics represented by polyphenylene sulfide (PPS) resin have become key substrates of precision electronic components, new energy automobile thermal management systems and chemical corrosion resistant parts by virtue of excellent high temperature resistance (HDT reaches 260 ℃), excellent chemical corrosion resistance (90% strong acid corrosion resistance) and UL 94V-0 level flame retardant property. However, PAS resin has the inherent disadvantage of insufficient high-temperature rigidity (flexural modulus. Ltoreq.3.5 GPa), and is required to be modified and reinforced by adding glass fiber, carbon fiber or inorganic mineral filler. However, in practical processing, the high viscosity melt characteristics (apparent viscosity >5000pa·s at 300 ℃) cause two major core process bottlenecks: And the difficult problems of resin drying and mixing uniformity. If PAS resin is not thoroughly dried before processing, the moisture will be rapidly vaporized in the high-temperature extrusion stage, resulting in defects such as silver streak, air bubble and the like on the surface of the product, and the mechanical property attenuation is more than 20%. Traditional hot air drying methods are difficult to penetrate through high-viscosity resin systems, so that core micropores remain. Meanwhile, the interface compatibility of the modified filler and the resin matrix is poor, the traditional feed hopper premixing device can only realize macro-scale mixing, and the filler agglomeration phenomenon (the particle size is more than 50 mu m, and the agglomeration accounts for more than 15 percent) occurs on the microscopic level, so that the internal stress of the product is concentrated, and the fatigue resistance is reduced by more than 40 percent. Disclosure of utility model The cross-linked composite resin double-screw extrusion device comprises a supporting table, a processing bracket, a T-shaped extrusion cylinder and an extrusion mixing structure, wherein the processing bracket is arranged on the supporting table, the T-shaped extrusion cylinder is arranged on the processing bracket and the supporting table, the extrusion mixing structure is arranged on the T-shaped extrusion cylinder, and the extrusion mixing structure comprises a pair of feeding threaded rods, a feeding gear set, a pushing driving machine, a horn-shaped feeding block, a tooth-mounted feeding pipe, a feeding box, a feeding threaded rod, a feeding threaded pipe, a feeding gear box, a feeding driving machine, a feeding extrusion plate, a humidity sensor and a humidity adjusting component; The pair of feeding threaded rods are inserted in parallel on the inner sides of the T-shaped extrusion barrels, the feeding gear sets are installed on the pair of feeding threaded rods, the driving ends of the pushing driving machines are connected to the feeding gear sets, the horn-shaped feeding blocks are installed on the inner sides of the T-shaped extrusion barrels, the tooth-mounted feeding pipes are evenly inserted in the inner sides of the T-shaped extrusion barrels, the feeding boxes are installed on the T-shaped extrusion barrels, the feeding threaded pipes are inserted in the feeding boxes, the feeding threaded rods are respectively and movably inserted in the inner sides of the feeding threaded pipes, the feeding gear boxes are sleeved on the feeding threaded pipes, the driving ends of the feeding driving machines are connected to the feeding gear boxes, the humidity sensor is installed on the inner sides of the T-shaped extrusion barrels, the humidity adjusting assembly is installed on the inner sides of the T-shaped extrusion barrels, and the feeding pressing plates are installed on the feeding threaded rods. Preferably, the humidity adjusting component comprises a U-shaped cooling box, a cooler, cooling liquid, a transfer box and a transfer pump; The U-shaped cooling box is sleeved on the inner side of the T-shaped extrusion cylinder, the transfer box is connected to the inner side of the U-shaped cooling box through a pipeline, the cooler and the cooling liquid are arranged on the inner side of the transfer box, and the transfer pump is arranged on the transfer box. Preferably, the feeding box is provided with a liquid supplementing box and a conveying pump. Preferably, a discharging pipe is arranged on the T-shaped extrusion barrel, and an inner diameter regulator is arranged on the inner side of the discharging pipe. Preferably, a booster pump is arranged on the T-shaped extrusion cylinder. Preferably, a pressure sensor is arranged on the inner side of the T-shaped extrusion cylinder. Advantageous effects The utility model provides a double-screw extrusion device