A kind of scratch-resistant masterbatch, preparation method and application thereof, and thermoplastic composite material composed thereof
A scratch-resistant and thermoplastic technology, which is applied in the field of polymer material modification, can solve the problems of large amount of silicone added, amides are not resistant to high temperature, and the effect is general, so as to achieve improved wear resistance and scratch resistance, and practicality. Wide and simple effect
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Embodiment A1-A11 and comparative example B1-B2
[0058] Examples A1-A11 and Comparative Examples B1-B2: Preparation of scratch-resistant masterbatch
[0059] Place the cubic boron nitride at a high temperature of 200~300℃ for 10-30 minutes according to the ratio shown in Table 1, and then put it into the internal mixer with ultra-high molecular weight polyethylene, polyethylene grafted maleic anhydride, and processing aids The banburying is carried out for 40-60 minutes, and then the banburying mixture is added to a single-screw extruder with a single screw diameter of 55mm-65mm, a length-to-diameter ratio of 18-22:1, and a screw speed of 80RPM-120 RPM. Granulate at ~200℃ to obtain scratch-resistant masterbatch.
[0060] Table 1 The distribution ratios (parts by weight) of each group of Examples A1-A11 and Comparative Examples B1-B2
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[0062] Continued Table 1
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Embodiment 1-6 and comparative example 1-10
[0064] Examples 1-6 and Comparative Examples 1-10: Preparation of Thermoplastic Composite Materials
[0065] Mix the thermoplastic polymer, carbon black and / or talc powder, the scratch-resistant masterbatch shown in Table 1 or silicone powder or erucamide according to the ratio of Table 2 through a high-speed mixer at room temperature for 6 minutes at a mixing speed of 160 revolutions / min, the mixed blend is extruded and pelletized through a twin-screw extruder. The temperature of each zone of the extruder is 200℃, 220℃, 220℃, 220℃, 220 from the feeding section to the head temperature. ℃, 215℃, screw length-to-diameter ratio is 40, screw diameter is 42mm, screw speed is 450 revolutions / min, feeding speed is 38 revolutions / min. The extruded particles are injected into a standard sample by a single-screw injection molding machine for testing. The injection temperature of the single-screw is 220℃, 230℃, 230℃, 235℃, 235℃, 230℃ from the feed to the die. , The screw length to diamete...
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