TGIC efficient devolatilization and melt extrusion granulation integrated device

Abstract

The invention discloses a TGIC efficient devolatilization and melt extrusion granulation integrated device which comprises a double-screw extruder, a material distributing machine head and a steel belt forming machine, a main feeding opening is formed in one end of a machine barrel of the double-screw extruder, a discharging opening is formed in the other end of the machine barrel of the double-screw extruder, at least three exhaust areas are formed in the machine barrel of the double-screw extruder, and the main feeding opening is communicated with the discharging opening. A vacuum opening is formed in each exhaust area and connected with a vacuum pump system through a pipeline, and a side feeding opening is further formed in the position, between the last vacuum opening and the discharging opening, of the machine barrel of the double-screw extruder; a discharge hole of the double-screw extruder is connected with the material distributing machine head, and an outlet of the material distributing machine head is connected with the steel belt forming machine. The device has the advantages of high volatile matter removal efficiency, continuous production, high automation degree, safe and environment-friendly production process, low energy consumption, high productivity and the like.

Description

technical field

[0001] The invention relates to the technical field of triglycidyl isocyanurate (TGIC) granulation, in particular to an integrated device for high-efficiency devolatilization and melt extrusion granulation of TGIC. Background technique

[0002] Triglycidyl isocyanurate (TGIC for short) is a crystalline heterocyclic epoxy compound. The three active epoxy groups can cross-link with the hydroxyl groups in the polyester resin. Because TGIC has excellent heat resistance properties, weather resistance, corrosion resistance, chemical resistance and mechanical properties, widely used in polyester resin or acrylic resin powder coating cross-linking curing agent, can also be used in structural materials, electrical insulation materials, printed circuit boards, modified Permanent epoxy resin, high-efficiency adhesive and other fields.

[0003] The existing TGIC production process generally includes: (1) condensation reaction of cyanuric acid and epichlorohydrin under t...

Examples

Embodiment 1

[0045] refer to figure 1 and figure 2 , this embodiment discloses a TGIC high-efficiency devolatilization and melt extrusion granulation integrated device, including a frame 1, a twin-screw extruder barrel 2 is arranged on the frame 1, and the twin-screw extruder machine One end of the cylinder 2 is provided with a main feeding port 9, and the other end is provided with a material outlet 10, wherein the main feeding port 9 is connected with a metering feeding system 20 for feeding TGIC wet powder. A pair of screw rods 3 are arranged in the barrel 2 of the twin-screw extruder, and one end of the pair of screw rods 3 is driven to rotate through the transmission mechanism 11, and the screw rod 3 is driven to rotate in the barrel 2 of the twin-screw extruder through the transmission mechanism 11. The two screws 3 can rotate in the same direction or rotate in different directions. In this embodiment, the transmission mechanism 11 drives the two screws 3 to rotate in the same dire...

Embodiment 2

[0058] refer to Figure 4 , the rest of this embodiment is the same as that of Embodiment 1, the difference is that in this embodiment, a gas injection port 12 is also provided on the barrel 2 of the twin-screw extruder, and the gas injection port 12 is arranged in the second exhaust area 6 and the third exhaust area 7, inject low-boiling inert compounds, such as water, nitrogen, carbon dioxide, etc., from the gas injection port 12, and then volatilize through the third vacuum port 71 to remove the small molecular components in the material It has a carrying effect, which can improve the effect of devolatilization.

Embodiment 3

[0060] refer to Figure 5 , the rest of this embodiment is the same as that of Embodiment 2. The difference is that in this embodiment, the length-to-diameter ratio of the screw 3 of the twin-screw extruder is 36-52D, and the discharge on the barrel 2 of the twin-screw extruder is The port 10 is connected to a second-stage extruder 17 by a melt pump 16, the inlet of the melt pump 16 is connected to the discharge port 10 of the twin-screw extruder, and the outlet of the melt pump 16 is connected to the outlet of the second-stage extruder 17. The entrance is connected.

[0061] The second-stage extruder 17 can be a single-screw extruder or a twin-screw extruder. In this embodiment, the second-stage extruder 17 adopts a co-rotating twin-screw extruder. In addition, in this embodiment, the second side feeding port 15 is not opened between the third exhaust zone 7 outlets 10, the second side feeding port 15 is arranged on the barrel of the second-stage extruder 17, The second sid...

technical field

[0001] The invention relates to the technical field of triglycidyl isocyanurate (TGIC) granulation, in particular to an integrated device for high-efficiency devolatilization and melt extrusion granulation of TGIC. Background technique

[0002] Triglycidyl isocyanurate (TGIC for short) is a crystalline heterocyclic epoxy compound. The three active epoxy groups can cross-link with the hydroxyl groups in the polyester resin. Because TGIC has excellent heat resistance properties, weather resistance, corrosion resistance, chemical resistance and mechanical properties, widely used in polyester resin or acrylic resin powder coating cross-linking curing agent, can also be used in structural materials, electrical insulation materials, printed circuit boards, modified Permanent epoxy resin, high-efficiency adhesive and other fields.

[0003] The existing TGIC production process generally includes: (1) condensation reaction of cyanuric acid and epichlorohydrin under t...

Examples

Embodiment 1

[0045] refer to figure 1 and figure 2 , this embodiment discloses a TGIC high-efficiency devolatilization and melt extrusion granulation integrated device, including a frame 1, a twin-screw extruder barrel 2 is arranged on the frame 1, and the twin-screw extruder machine One end of the cylinder 2 is provided with a main feeding port 9, and the other end is provided with a material outlet 10, wherein the main feeding port 9 is connected with a metering feeding system 20 for feeding TGIC wet powder. A pair of screw rods 3 are arranged in the barrel 2 of the twin-screw extruder, and one end of the pair of screw rods 3 is driven to rotate through the transmission mechanism 11, and the screw rod 3 is driven to rotate in the barrel 2 of the twin-screw extruder through the transmission mechanism 11. The two screws 3 can rotate in the same direction or rotate in different directions. In this embodiment, the transmission mechanism 11 drives the two screws 3 to rotate in the same dire...

Embodiment 2

[0058] refer to Figure 4 , the rest of this embodiment is the same as that of Embodiment 1, the difference is that in this embodiment, a gas injection port 12 is also provided on the barrel 2 of the twin-screw extruder, and the gas injection port 12 is arranged in the second exhaust area 6 and the third exhaust area 7, inject low-boiling inert compounds, such as water, nitrogen, carbon dioxide, etc., from the gas injection port 12, and then volatilize through the third vacuum port 71 to remove the small molecular components in the material It has a carrying effect, which can improve the effect of devolatilization.

Embodiment 3

[0060] refer to Figure 5 , the rest of this embodiment is the same as that of Embodiment 2. The difference is that in this embodiment, the length-to-diameter ratio of the screw 3 of the twin-screw extruder is 36-52D, and the discharge on the barrel 2 of the twin-screw extruder is The port 10 is connected to a second-stage extruder 17 by a melt pump 16, the inlet of the melt pump 16 is connected to the discharge port 10 of the twin-screw extruder, and the outlet of the melt pump 16 is connected to the outlet of the second-stage extruder 17. The entrance is connected.

[0061] The second-stage extruder 17 can be a single-screw extruder or a twin-screw extruder. In this embodiment, the second-stage extruder 17 adopts a co-rotating twin-screw extruder. In addition, in this embodiment, the second side feeding port 15 is not opened between the third exhaust zone 7 outlets 10, the second side feeding port 15 is arranged on the barrel of the second-stage extruder 17, The second sid...

Images