A kind of polytetrafluoroethylene microporous film and preparation method thereof
A technology of polytetrafluoroethylene and microporous film, which is applied to flat products, other household appliances, household appliances, etc., can solve problems such as insufficient performance, unsatisfactory dispersion and adhesion of polytetrafluoroethylene microporous film, and achieve improvement Combining strength, expanding functions and application fields, and improving the effect of comprehensive performance
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Embodiment 1
[0047] (1) Preparation of titanium dioxide precursor: dissolve 30ml tetrabutyl titanate and 5ml glacial acetic acid into 35ml absolute ethanol, mix and stir to obtain tetrabutyl titanate alcohol solution; mix 15ml deionized water with 55ml anhydrous Ethanol was stirred and mixed to obtain a hydroalcoholic solution. Then the hydroalcoholic solution was slowly added dropwise into the tetrabutyl titanate alcohol solution, and the stirring was continued for 2 hours. The resulting solution was aged overnight at room temperature to obtain a pale yellow transparent gel. Then the gel was dried at 100° C. for 12 hours, and ground to obtain a titanium dioxide precursor.
[0048] (2) Preparation of polytetrafluoroethylene base tape: 1000g of polytetrafluoroethylene dispersed resin powder with a crystallinity of 98% and a molecular weight of 8 million is stirred and mixed with 200g of liquid paraffin and 5g of titanium dioxide precursor, and left to stand at a temperature of 40°C After ...
Embodiment 2
[0053] (1) Preparation of titanium dioxide precursor: dissolve 90ml tetrabutyl titanate and 10ml glacial acetic acid in 80ml absolute ethanol, mix and stir to obtain tetrabutyl titanate alcohol solution; mix 30ml deionized water with 60ml anhydrous Ethanol was stirred and mixed to obtain a hydroalcoholic solution. Then the hydroalcoholic solution was slowly added dropwise into the tetrabutyl titanate alcohol solution, and the stirring was continued for 2 hours. The resulting solution was aged overnight at room temperature to obtain a pale yellow transparent gel. Then the gel was dried at 100° C. for 12 hours, and ground to obtain a titanium dioxide precursor.
[0054] (2) Preparation of polytetrafluoroethylene-based tape: 1000g of polytetrafluoroethylene dispersed resin powder with a crystallinity of 98% and a molecular weight of 8 million is stirred and mixed with 220g of petroleum ether and 20g of titanium dioxide precursor, and allowed to stand at a temperature of 50°C Af...
Embodiment 3
[0059] (1) Preparation of titanium dioxide precursor: dissolve 240ml tetrabutyl titanate and 30ml glacial acetic acid into 210ml absolute ethanol, mix and stir to obtain tetrabutyl titanate alcohol solution; mix 60ml deionized water with 100ml anhydrous Ethanol was stirred and mixed to obtain a hydroalcoholic solution. Then the hydroalcoholic solution was slowly added dropwise into the tetrabutyl titanate alcohol solution, and the stirring was continued for 2 hours. The resulting solution was aged overnight at room temperature to obtain a pale yellow transparent gel. Then the gel was dried at 100° C. for 12 hours, and ground to obtain a titanium dioxide precursor.
[0060] (2) Preparation of polytetrafluoroethylene base tape: 1000g crystallinity is 99%, polytetrafluoroethylene dispersed resin powder with a molecular weight of 10 million is stirred and mixed with 250g kerosene and 50g titanium dioxide precursor, and is allowed to stand at 60°C for 24 Hours, a polytetrafluoroe...
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Abstract
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