Biaxially oriented polyarylene sulfide film and process for producing the same
A technology of biaxially oriented film and polyarylene sulfide, applied in flat products, other household appliances, applications, etc., can solve the problems of insufficient heat resistance, insufficient film stability, high thermal shrinkage, etc., and achieve flat excellent effect
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reference example 1
[0120] (Reference Example 1) Polymerization of PPS resin
[0121] Add 47.5% sodium hydrosulfide 8,267.37g (70.00 mole), 96% sodium hydroxide 2,957.21g (70.97 mole), N-methyl-2-pyrrolidone (NMP) 11,434.50g (115.50 mol), sodium acetate 2,583.00g (31.50 mol) and ion-exchanged water 10,500g, slowly heated to 245°C for about 3 hours while feeding nitrogen under normal pressure, distilled 14,780.1g of water and 280g of NMP, the reaction vessel Cool to 160°C. The amount of residual water in the system per 1 mol of the added alkali metal sulfide was 1.06 mol, including the water consumed by the hydrolysis of NMP. In addition, the amount of hydrogen sulfide scattered was 0.02 mol per 1 mol of the added alkali metal sulfide.
[0122] Then, 10,235.46 g (69.63 mol) of p-dichlorobenzene and 9,009.00 g (91.00 mol) of NMP were added, and the reaction vessel was sealed under nitrogen, and the temperature was raised to 238° C. at a rate of 0.6° C. / min while stirring at 240 rpm. After reacti...
reference example 2
[0124] (Reference example 2) Polymerization of copolymerized polyphenylene sulfide resin
[0125] Add 100 moles of sodium sulfidenonahydrate (sodium sulfidenonahydrate), 45 moles of sodium acetate and 25 liters of N-methyl-2-pyrrolidone (hereinafter referred to as NMP) in the autoclave, slowly heat up to a temperature of 220 ° C while stirring, and pass The contained water was distilled off. Add 91 moles of p-dichlorobenzene as the main component monomer, 10 moles of m-dichlorobenzene and 0.2 moles of 1,2,4-trichlorobenzene as sub-component monomers together with 5 liters of NMP in the dehydration-finished system , at a temperature of 170°C at 3kg / cm 2 After nitrogen was pressurized and sealed, the temperature was raised, and polymerization was carried out at a temperature of 260° C. for 4 hours. After the completion of the polymerization, it was cooled, and the polymer was precipitated in distilled water, and passed through a wire mesh having 150 meshes to obtain a small bl...
Embodiment 1
[0127] Mix 100 parts by weight of the PPS resin prepared in Reference Example 1, and 0.3 parts by weight of calcium carbonate powder with an average particle diameter of 1.2 μm, dry it under reduced pressure at 180°C for 3 hours, and then supply it to the full screw thread where the melting part is heated to 320°C In a uniaxial extruder (full flight uniaxial extruder). After the polymer melted in the extruder is filtered through a filter set at 330°C, it is melted and extruded from the nozzle of a T-die set at 310°C, and cast on a casting drum with a surface temperature of 25°C Apply static charge and close to cool and solidify to make unstretched film.
[0128] After preheating the unstretched film with a heated longitudinal stretching machine composed of a plurality of roller groups, utilize the peripheral speed difference of the pressing rollers to draw 3.3 times in the longitudinal direction of the film at a film temperature of 101°C. Multiplied for stretching. After tha...
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