A kind of preparation method of lightweight polypropylene material
A polypropylene material and lightweight technology, applied in the field of polypropylene materials, can solve the problems of difficulty in meeting the production requirements of polypropylene foam materials, low decomposition starting temperature, wide decomposition temperature range, etc., so as to reduce the decomposition temperature range and improve the Compatibility, the effect of improving the effect
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Embodiment 1
[0022] The invention provides a kind of preparation method of lightweight polypropylene material, comprises the following steps:
[0023] (1) Weigh 12 parts by mass of sodium bicarbonate and 28 parts by mass of citric acid; mix the two and infiltrate them in 100 parts by mass of ethanol, then mix them evenly with ultrasonic waves, spin dry them by spin coating, and dry them in vacuum for 0.5h , to remove the organic solvent to obtain a microcellular foaming agent for polypropylene; citric acid can increase the thermal decomposition initiation temperature of sodium bicarbonate, and citric acid itself also has a foaming effect, which is conducive to improving the microcellular foaming agent for polypropylene The foaming effect of the agent;
[0024] (2) Weigh 75 parts by mass of silicone oil (molecular weight 1-100,000), add 25 parts by mass of the microcellular foaming agent for polypropylene prepared in step (1), and then ultrasonicate and stir at a speed of 100rpm, The mixin...
Embodiment 2
[0031] The invention provides a kind of preparation method of lightweight polypropylene material, comprises the following steps:
[0032] (1) Weigh 15 parts by mass of sodium bicarbonate and 21 parts by mass of citric acid; mix the two and infiltrate them in 100 parts by mass of ethanol, then mix them evenly with ultrasonic waves, spin dry them by spin coating, and dry them in vacuum for 0.2h , remove the organic solvent to obtain the microcellular foaming agent for polypropylene;
[0033] (2) Weigh 80 parts by mass of silicone oil (molecular weight 1-100,000), add 20 parts by mass of the microcellular foaming agent for polypropylene prepared in step (1), and then ultrasonicate and stir at a speed of 150rpm, The mixing time is 12 hours; vacuum drying for 100 minutes after vacuum filtration to obtain a microporous foaming agent for silicone-coated polypropylene;
[0034] (3) Weigh 2 parts by mass of the microcellular foaming agent for silicone-coated polypropylene prepared in ...
Embodiment 3
[0040] The invention provides a kind of preparation method of lightweight polypropylene material, comprises the following steps:
[0041] (1) Weigh 9 parts by mass of sodium bicarbonate and 35 parts by mass of citric acid; mix the two and infiltrate them in 100 parts by mass of ethanol, then mix them evenly with ultrasonic waves, spin dry them by spin coating, and dry them in vacuum for 1 hour. Remove the organic solvent to obtain a microcellular foaming agent for polypropylene;
[0042] (2) Weigh 70 parts by mass of silicone oil (molecular weight 1-100,000), add 30 parts by mass of the microcellular foaming agent for polypropylene prepared in step (1), and then ultrasonicate and stir at a speed of 80rpm, The mixing time is 24 hours; vacuum drying for 50 minutes after vacuum filtration to obtain a microporous foaming agent for silicone-coated polypropylene;
[0043] (3) Weigh 4.5 parts by mass of the microcellular foaming agent for silicone-coated polypropylene prepared in st...
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