Notched impact strength of 8.7kJmG induced flammability (hot rod method)
DATE：2019/12/16 8:59:29 / READ： / SOURCE：This station
Notched impact strength of 8.7kJmG induced flammability (hot rod method)
Flames
, Rockwell hardness 9
Example 16 Antistatic flame retardant PVC composite mining pipe
PVC resin, model S-1000, produced by Qilu Petrochemical Company; special conductive carbon black, flame retardant, stable
1. material selection
Stabilizers, processing aids, impact modifiers, tougheners, etc.
The unit for producing antistatic and flame retardant PNC composite mining pipes is extruded by mixing equipment and twin screw
2. Major equipment
It consists of a pelletizer, a parallel twin-screw extruder, and a die.
The mixing equipment is composed of TAMM-150 high-speed thermal mixer and low-speed mixer. Its role is to fully mix various raw and auxiliary materials to make it a uniform multi-phase system and discharge it.
Moisture and volatiles in the material.
The twin-screw extrusion granulator is the main equipment for the production of leather-specific materials. THL-85 and THL-90 twin screw extruders are the main equipment for plasticizing materials. The core of forming antistatic and flame retardant PNC composite mining pipe lies in the structure and design of the machine head. The molding process adopts double machine coextrusion, and the special machine head is formed at one time. Its nose is characterized by a complex structure, which is more complicated. In the three layers of the mold, the inner and outer skin layers and the middle core layer are formed in the same model. The inner and outer skin layers and the core layer materials independently enter their own flow channels. At the same time, the inner and outer skin layers and the core layer materials are composed of two units. The extruder feeds the materials separately, enters the common mold runner after completing the split in the three-layer common split mold, and extrudes through the common runner. The head and the extruder, the three-layer co-extrusion die and the common die are connected in a huff block manner.
In addition, the vacuum sizing spray cooling water tank is a pipe sizing device. The traction equipment keeps the pipe moving forward synchronously with the extruder. The fixed-length cutting device cuts the pipe that reaches the fixed length. The stacking rack can stack the pipes of the lower production line. neat.
The main machine THL-85 extruder and THL-90 extruder head die are arranged in 90. At the same time, in the production process, the leather special material and the core ordinary material must be strictly separated, and added to the two hosts. No mixing shall occur.
3. Preparation process
(1) Process flow Process flow for producing antistatic flame retardant PVC composite mining pipe
Figure 1-220
Flames
, Rockwell hardness 9
Example 16 Antistatic flame retardant PVC composite mining pipe
PVC resin, model S-1000, produced by Qilu Petrochemical Company; special conductive carbon black, flame retardant, stable
1. material selection
Stabilizers, processing aids, impact modifiers, tougheners, etc.
The unit for producing antistatic and flame retardant PNC composite mining pipes is extruded by mixing equipment and twin screw
2. Major equipment
It consists of a pelletizer, a parallel twin-screw extruder, and a die.
The mixing equipment is composed of TAMM-150 high-speed thermal mixer and low-speed mixer. Its role is to fully mix various raw and auxiliary materials to make it a uniform multi-phase system and discharge it.
Moisture and volatiles in the material.
The twin-screw extrusion granulator is the main equipment for the production of leather-specific materials. THL-85 and THL-90 twin screw extruders are the main equipment for plasticizing materials. The core of forming antistatic and flame retardant PNC composite mining pipe lies in the structure and design of the machine head. The molding process adopts double machine coextrusion, and the special machine head is formed at one time. Its nose is characterized by a complex structure, which is more complicated. In the three layers of the mold, the inner and outer skin layers and the middle core layer are formed in the same model. The inner and outer skin layers and the core layer materials independently enter their own flow channels. At the same time, the inner and outer skin layers and the core layer materials are composed of two units. The extruder feeds the materials separately, enters the common mold runner after completing the split in the three-layer common split mold, and extrudes through the common runner. The head and the extruder, the three-layer co-extrusion die and the common die are connected in a huff block manner.
In addition, the vacuum sizing spray cooling water tank is a pipe sizing device. The traction equipment keeps the pipe moving forward synchronously with the extruder. The fixed-length cutting device cuts the pipe that reaches the fixed length. The stacking rack can stack the pipes of the lower production line. neat.
The main machine THL-85 extruder and THL-90 extruder head die are arranged in 90. At the same time, in the production process, the leather special material and the core ordinary material must be strictly separated, and added to the two hosts. No mixing shall occur.
3. Preparation process
(1) Process flow Process flow for producing antistatic flame retardant PVC composite mining pipe
Figure 1-220
Author：admin