Polyimide film as well as preparation method and rapid winding device thereof
A polyimide film and winding device technology, which is applied in the direction of thin material processing, winding strips, transportation and packaging, etc., can solve the problem of affecting the normal use of electronic equipment, poor antimagnetic performance of polyimide film, and winding The device is inconvenient to quickly rewind and replace the rewinding roller, etc.
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Embodiment 1
[0040] A polyimide film, the polyimide film is composed of the following raw materials in parts by mass: 55 parts of linear structure mixed dianhydride, 42 parts of mixed diamine, 3.5 parts of low carbon alloy, 3.8 parts of modified wollastonite 3.6 parts, 3.6 parts of barium petroleum sulfonate, 1.3 parts of expanded pearl powder, 1.5 parts of glass micropowder and 28 parts of polystyrene.
[0041] A kind of preparation method of polyimide film, preparation method step is as follows:
[0042] Step 1. Dissolve the mixed diamine in a polar aprotic solvent, then add a linear structure mixed dianhydride, control the temperature of the reaction solution at 44°C, stir and react at 200r / min for 1.6h, and obtain a polyamic acid solution;
[0043] Step 2, adding low-carbon alloy, modified wollastonite, barium petroleum sulfonate, expanded pearl powder and glass micropowder to polystyrene, and then uniformly dispersed by ultrasonic to obtain a coating solution;
[0044] Step 3: Castin...
Embodiment 2
[0046] A polyimide film, the polyimide film is composed of the following raw materials in parts by mass: 45 parts of linear structure mixed dianhydride, 48 parts of mixed diamine, 2.5 parts of low carbon alloy, 2.6 parts of modified wollastonite 2.9 parts of barium petroleum sulfonate, 0.7 parts of expanded pearl powder, 2 parts of glass micropowder and 25 parts of polystyrene.
[0047] A kind of preparation method of polyimide film, preparation method step is as follows:
[0048] Step 1. Dissolve the mixed diamine in a polar aprotic solvent, then add a linear structure mixed dianhydride, control the temperature of the reaction solution at 44°C, and stir at 200r / min for 2.2h to obtain a polyamic acid solution;
[0049] Step 2, adding low-carbon alloy, modified wollastonite, barium petroleum sulfonate, expanded pearl powder and glass micropowder to polystyrene, and then uniformly dispersed by ultrasonic to obtain a coating solution;
[0050] Step 3: Casting the polyamic acid s...
Embodiment 3
[0052] A polyimide film, the polyimide film is composed of the following raw materials in parts by mass: 35 parts of linear structure mixed dianhydride, 55 parts of mixed diamine, 4.6 parts of low carbon alloy, 3.2 parts of modified wollastonite 2.4 parts of barium petroleum sulfonate, 2 parts of expanded pearl powder, 2.5 parts of glass micropowder and 33 parts of polystyrene.
[0053] A kind of preparation method of polyimide film, preparation method step is as follows:
[0054] Step 1. Dissolve the mixed diamine in a polar aprotic solvent, then add a linear structure mixed dianhydride, control the temperature of the reaction solution at 52°C, stir and react at 200r / min for 2.8h, and obtain a polyamic acid solution;
[0055] Step 2, adding low-carbon alloy, modified wollastonite, barium petroleum sulfonate, expanded pearl powder and glass micropowder to polystyrene, and then uniformly dispersed by ultrasonic to obtain a coating solution;
[0056] Step 3: Casting the polyami...
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