Polypropylene flame-retardant material capable of being used for producing concealed bottom box and preparation method thereof
A flame retardant material, polypropylene technology, applied in the field of polypropylene flame retardant materials and its preparation, can solve the problems of low-temperature cold brittleness, low Vicat softening point, narrow processing temperature range, etc. Simple and reliable process, stable product color and wide processing temperature range
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Embodiment 1-12
[0043] The composition of the polypropylene flame-retardant material that can be used for the production of concealed bottom box of embodiment 1-12 is as shown in table 1, wherein, the composition of the polypropylene flame-retardant material that can be used for the production of concealed bottom box of embodiment 1-12 The preparation method comprises the following steps:
[0044] (1) Take each component raw material in proportion, and put each component raw material into a high-speed mixer and mix for 5 minutes;
[0045] (2) Put the mixed material in a twin-screw extruder, and the processing conditions are: the temperature of the first zone is 170-180°C, the temperature of the second zone is 175-185°C, the temperature of the third zone is 180-190°C, and the temperature of the fourth zone is 180°C -190°C, five-zone temperature of 180-190°C, head temperature of 180-200°C, host speed of 300-450 rpm, extruding and granulating to obtain the polypropylene flame-retardant material....
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