High melt strength polypropylene material and preparation
A polypropylene material and high melt strength technology, applied in the field of high melt strength polypropylene material and preparation, can solve the problems of mechanical properties of blends, impact strength, thermal deformation temperature performance, etc. The effect of good comprehensive physical properties and easy process control
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Embodiment 1
[0022] Raw material components: 100 parts of PP1, 15 parts of PA6, 10 parts of PE-g-MAH, 0.2 part of B215 antioxidant, 0.2 part of calcium stearate.
[0023] The structure of the screw extruder: Parallel co-rotating twin-screw extruder, the screw diameter is 25mm, the screw length-to-diameter ratio is 48:1, there are 8 heating zones in total, and the sixth section is vacuumed and exhausted.
[0024] The process parameter setting of twin-screw extruder: the screw speed is 140r / min; The temperature settings of each section of the section) are: 220°C, 240°C, 240°C, 240°C, 240°C, 230°C, 220°C, 200°C.
[0025] Preparation of high-melt-strength polypropylene: The high-melting point crystalline polymer is fully dried, the raw materials are accurately measured, fully mixed with a high-speed mixer, and then the mixture is fed into a twin-screw extruder with a length-to-diameter ratio of 32. Melt mixing, extrusion granulation, twin-screw extruder speed 140rpm.
[0026] The product was...
Embodiment 2
[0028] Raw material components: 100 parts of PP1, 20 parts of PA6, 15 parts of POE-g-MAH, 15 parts of LDPE, 2 parts of organic montmorillonite, 0.2 part of B215 antioxidant, 0.2 part of calcium stearate.
[0029] Preparation of high-melt-strength polypropylene: The high-melting point crystalline polymer is fully dried, and each raw material is accurately measured, fully mixed with a high-speed mixer, and then the mixture is fed into a twin-screw extruder with a length-to-diameter ratio of 52. Melt mixing, extrusion granulation, twin-screw extruder speed 400rpm. Other conditions are with embodiment 1. The product performance is shown in Table 1.
Embodiment 3
[0031] Raw material components: 100 parts of PP2, 25 parts of PA66, 15 parts of PP-g-MAH, 0.2 part of B215 antioxidant, 0.2 part of calcium stearate.
[0032] The process parameter setting of the twin-screw extruder: the screw speed is 140r / min, and the temperature of each section is: 240°C, 260°C, 265°C, 265°C, 265°C, 245°C, 230°C, 210°C.
[0033] Preparation of high-melt-strength polypropylene: The high-melting point crystalline polymer is fully dried, and each raw material is accurately measured, fully mixed with a high-speed mixer, and then the mixture is fed into a twin-screw extruder with a length-to-diameter ratio of 40. Melt mixing, extrusion granulation, twin-screw extruder speed 100rpm. Other conditions are with embodiment 1. The product performance is shown in Table 1.
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