Liquid crystal polymer composition and preparation method thereof
A technology of liquid crystal polymers and compositions, applied in the field of materials, can solve problems such as large lifting range and high dielectric loss
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[0034] Example 1 Liquid crystal polymer resin 1
[0035] A liquid crystal polymer resin, comprising the structural unit shown in formula (I),
[0036]
[0037] In the liquid crystal polymer resin, the molar percentage of the structural unit represented by the formula (I) to the total structural unit is 20%.
[0038] The preparation method of the liquid crystal polymer resin of the present embodiment is as follows:
[0039]In a 100-liter reactor equipped with a nitrogen inlet and a stirrer with a stirring power display, add 61.2395kg of parahydroxybenzoic acid (HBA), 27.5200kg of biphenol (BP), 18.4146kg of terephthalic acid (TPA) , 6.1382kg isophthalic acid (IA) and 76.1938kg acetic anhydride (AA) and 15.06g magnesium acetate. After replacing nitrogen, the reaction temperature was raised to 145°C for 3 hours of reflux reaction under nitrogen atmosphere; then the temperature was raised to 360°C at a rate of 60°C / hour, kept at this temperature for 30 minutes, and then evacu...
Example Embodiment
[0041] Example 2 Liquid Crystal Polymer Resin 2
[0042] A liquid crystal polymer resin, comprising the structural unit shown in formula (I),
[0043]
[0044] In the liquid crystal polymer resin, the molar percentage of the structural unit represented by the formula (I) to the total structural unit is 25%.
[0045] The preparation method of the liquid crystal polymer resin of the present embodiment is as follows:
[0046] In a 100-liter reactor equipped with a nitrogen inlet and a stirrer with a stirring power display, add 1.6869 kg of parahydroxybenzoic acid (HBA), 60.9038 kg of 2-hydroxy-6-naphthoic acid (HNA), 25.5844 kg of biphenyl diphenyl Phenol (BP), 22.8259 kg of terephthalic acid (TPA) and 62.9641 kg of acetic anhydride (AA) and 15.06 g of magnesium acetate. After replacing nitrogen, the reaction temperature was raised to 145°C for 3 hours under a nitrogen atmosphere; then the temperature was raised to 358°C at a rate of 60°C / hour (the maximum reaction temperatu...
Example Embodiment
[0048] Example 3 Liquid Crystal Polymer Resin 3
[0049] A liquid crystal polymer resin, comprising the structural unit shown in formula (I),
[0050]
[0051] In the liquid crystal polymer resin, the molar percentage of the structural unit represented by the formula (I) in the total structural unit is 11.2%.
[0052] The preparation method of the liquid crystal polymer resin of the present embodiment is as follows:
[0053] In a 100-liter reactor equipped with a nitrogen inlet and a stirrer with a stirring power display, add 65.9614kg of parahydroxybenzoic acid (HBA), 7.1779kg of 2-hydroxy-6-naphthoic acid (HNA), 15.9100kg of biphenyl diphenyl Phenol (BP), 20.5315 kg terephthalic acid (TPA), 5.7658 kg paracetamol (APAP) and 75.8369 kg acetic anhydride (AA) and 15.06 g magnesium acetate. After replacing the nitrogen, the reaction temperature was raised to 145°C under a nitrogen atmosphere for 3 hours of reflux reaction; then the temperature was raised to 350°C at a rate o...
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