Method for producing liquid crystal polyester composition
A technology of liquid crystal polyester and composition, applied in liquid crystal materials, chemical instruments and methods, nanotechnology for materials and surface science, etc. Insufficient dispersion and other problems, to achieve the effect of good mechanical strength
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Embodiment 1
[0096] Production Example 1 (production of liquid crystal polyester)
[0097] In a reactor equipped with a stirrer, torque meter, nitrogen introduction tube, thermometer and reflux condenser, charge 994 . 5 g( 7 . 2 mol) of p-hydroxybenzoic acid, 299 . 1 g( 1 . 8 mol) of terephthalic acid, 99 . 7 g( 0 . 6 mol) of isophthalic acid, 446 . 9 g( 2 . 4 mol) 4 , 4 '-Dihydroxybiphenyl, 1347 . 6 g( 13 . 2 mol) of acetic anhydride and 0 . 2 g's 1 -Methylimidazole and in 30 The temperature was raised from room temperature to 150 ℃, while stirring, and then 150 °C to reflux the mixture 1 Hour. Then, further add 0 . 9 g's 1 -Methylimidazole, in 2 Hour 50 within minutes to bring the temperature from 150 ℃ rises to 320 °C, while distilling off by-product acetic acid and unreacted acetic anhydride. exist 320 °C was held until an increase in torque was recognized, the contents were removed from the reactor and then cooled to room temperature. The obtained...
Embodiment 2
[0098] Production example 2 (Production of Nanostructured Hollow Carbon Materials)
[0099] use 2 . 24 g iron powder, 7 . 70g of citric acid and 400 ml of water, prepared at a concentration of 0 . 1 M (M is mol / l) of iron mixed solution and the iron mixed solution was filled into an airtight container and then mixed by a table shaker 7 sky. During a period of mixing, the formed hydrogen gas is properly vented from the vessel to obtain a template catalyst nanoparticle mixed solution. Towards 6 . 10 g of resorcinol and 9 . 0 In the mixed solution of formaldehyde of g, add 100 ml of the template catalyst nanoparticle mixed solution and added dropwise while vigorously stirring 30 ml of ammonia solution. The pH of the obtained suspension is 10 . 26 . heated on an oil bath to 80 - 90 The temperature at which the suspension polymerizes 3 . 5 hours to produce carbon material intermediates. The obtained carbon material intermediate was recovered by filtration, dr...
Embodiment 3
[0100] Production example 3 (The liquid crystal polyester composition used for the raw material 1 production of a)
[0101] Mixed by Henschel mixer 94 The production embodiment of mass part 1 The liquid crystal polyester obtained in 6 The production embodiment of mass part 2 After obtaining the nanostructured hollow carbon material in , using a twin-screw extruder PCM manufactured by Ikegai Iron Works, Ltd.- 30 ,exist 340 Cylinder temperature in 100 Kneading and granulating the obtained mixture at a shear rate of / sec to obtain a liquid crystal polyester composition for raw materials 1 a. Liquid crystal polyester composition for raw material 1 a used as an example 1 Raw materials used in the production of the liquid crystal polyester composition according to the present invention.
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