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在常规反应器中利用原位插层法的原理,制备了聚苯撑苯并二噁唑/纳米石墨微片(PBO/GN)复合材料。该反应在常规反应器中能顺利进行,避免使用双螺杆挤出机等高端设备,大大降低了反应成本。对PBO/GN复合材料进行了红外及热重分析、特性黏数比较和力学性能测定,与同等条件下制得的PBO进行了对比分析。结果表明:GN对PBO的聚合有促进作用,制得的PBO/GN复合材料不仅具有PBO材料优良的耐热性,纤维拉伸强度也相对提高了90%左右。
Poly (phenylene) benzobisoxazole / nanometer graphite chip (PBO / GN) composites were prepared by the principle of in situ intercalation in a conventional reactor. The reaction can be smoothly carried out in conventional reactors, avoiding the use of high-end equipment such as twin-screw extruders, greatly reducing the cost of the reaction. The PBO / GN composites were analyzed by infrared and thermogravimetric analysis, the comparison of intrinsic viscosity and mechanical properties, and the PBO prepared under the same conditions were compared. The results show that GN can promote the polymerization of PBO. The prepared PBO / GN composite not only possesses the excellent heat resistance of PBO, but also increases the tensile strength of fiber by about 90%.