Preparation method of interfacial interlocking heterogeneous polypropylene-based polymer blend composite material
A technology of heterogeneous polypropylene and polymer materials, which is applied in melt spinning, textile and papermaking, feeding solution to spinnerets, etc., to achieve the effect of improving interfacial compatibility, interfacial performance and mechanical strength
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Embodiment 1
[0033] The raw materials in this example are aromatic β-nucleating agent (TMB-5), homopolypropylene (T30S) and nylon 66 (PA66), with a mass ratio of 0.1:95:5.
[0034] First, TMB-5 and nylon 66 are melted and pre-mixed and extruded at 270 ° C, and then the pre-mixed material is mixed with homopolypropylene and put into a screw extruder through a controlled one-stage multi-phase melt blending extrusion process (The temperature of the melting section of the extruder is 270°C), the self-assembly temperature of the second section (ie, the die section) is 180°C, and the extrusion speed is 100r / min. The prepared homopolypropylene / nylon 66 composite material not only has The interlocking structure of the interface, and because TMB-5 can self-assemble at the interface of homopolypropylene and nylon 66 to form an interlocking structure of incompatible interface, the test results of its mechanical properties show that the interlocking structure of the interface makes the composite materi...
Embodiment 2
[0036] The raw materials of this example are sorbitol-based α-nucleating agent (DBS), block copolymerized polypropylene (EPS30R) and polylactic acid (PLA), with a mass ratio of 0.5:60:40.
[0037] First, DBS and polylactic acid are melted and pre-mixed and extruded at 190 °C, and then the pre-mixed material is mixed with block copolymer polypropylene and put into an injection molding machine through a controlled one-stage multi-phase melt blending injection molding process (injection molding machine melting The temperature of the first section is 230°C), the self-assembly temperature of the second section (that is, the die section) is 170°C, and the injection speed is 80r / min. The prepared block copolymerized polypropylene / polylactic acid blend composite not only has interface interlocking structure, and because DBS can self-assemble at the interface of block copolymerized polypropylene and polylactic acid to form an interlocking structure of incompatible interfaces, the result...
Embodiment 3
[0039] The raw materials of this example are rare earth β-nucleating agent (WBG-II), random copolymerized polypropylene (R200P) and polyethylene terephthalate (FR515), with a mass ratio of 1:90:10.
[0040] First, WBG-II and polyethylene terephthalate are melted and pre-mixed and extruded at 260°C, and then the pre-mixed material is mixed with random copolymerized polypropylene and put into a vulcanizer through a controlled multi-phase melt blending process. Molding process (the temperature of the vulcanizing machine is 260°C, hold pressure for 5mins), move to the second stage (ie another vulcanizer), the self-assembly temperature of the other vulcanizer is set at 160°C, hold pressure for 5mins. The prepared random copolymerized polypropylene / polyethylene terephthalate blend composite not only has interfacial interlocking structure, but also because WBG-II can be at the interface of random copolymerized polypropylene and polyethylene terephthalate self-assembled to form an int...
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