Special material for white polyvinylidene fluoride cast film
The technology of polyvinylidene fluoride and special material is applied in the field of special material for white polyvinylidene fluoride casting film, which can solve the problems of uneven whiteness of polyvinylidene fluoride white film, difficulty in melting and plasticizing, scorching of raw materials, etc. No obvious crystal point, easy flow, good dispersion effect
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[0042] The technical solutions of the present invention will be further described below with implementation examples, but the present invention is not limited to the following examples and implementation methods.
[0043] When the melt index of polyvinylidene fluoride is between 3 and 30 (g / 10min, 5kg, 230°C), the raw material can be melt-processed.
[0044] When the melt index of polymethylmethacrylate is between 10 and 30 (g / 10min, 5kg, 230°C), the fluidity of the formulation can be improved.
[0045] Embodiment 1-4 is four kinds of different special material formulations (referring to Table 1). The raw materials adopted in each embodiment are as follows:
[0046] (1) Polyvinylidene fluoride (PVDF): The melt index is 24 (g / 10min, 5kg, 230°C).
[0047] ⑵Titanium dioxide: trade name: R-104, supplier: DuPont Company of the United States; average particle size of powder is 0.2-0.3 microns
[0048] (3) Polymethyl methacrylate (PMMA): The melt index is 24 (g / 10min, 5kg, 230°C) ...
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