CN109503191A - 一种石墨烯改性粘胶基炭纤维会议室吸音板的制备方法 - Google Patents
一种石墨烯改性粘胶基炭纤维会议室吸音板的制备方法 Download PDFInfo
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Abstract
本发明公开了一种石墨烯改性粘胶基炭纤维复合材料会议室吸音板的制备方法,采用短纤维针刺体作为预制体骨架,采用树脂浸渍、固化、炭化的工艺进行硬化处理。该方法为:一、采用粘胶基炭纤维针刺体作为预制体材料;二、树脂浸渍液的配置;三、树脂浸渍;四、固化处理;五、炭化处理;六、机械加工后,制得石墨烯改性粘胶基炭纤维复合材料会议室吸音板。本发明采用粘胶基炭纤维作为骨架,树脂炭基体作为增强体且经过石墨烯改性的低密度、多孔炭/炭吸音板,具有防水、防火、抗老化、抗冲击能力好,用材低能耗、环保、废弃后对环境无污染,在使用过程中,吸声效果好等优点。
Description
技术领域
本发明属于新材料领域,具体涉及一种耐腐蚀、抗老化、会议室吸音板材。
背景技术
会议室大厅的顶部吸声控制混响时间达到设计值时,通常不进行声学处理。作为反射面。会议室的声学结构的配置和选择,根据它的体积标准(即装饰的要求),并决定:在100 m3左右的小型会议室(一般圆桌会议),如果室内摆放的地毯窗帘沙发平时做不需要再作声学处理,吸音材料能够达到预期的混响时间值。在200 m3以上的会议厅,一般应设置吸音材料或结构。
一个好的听音环境的建立,包括建筑声学和电声两个方面的内容;专业音响工程中所指的建声主要是厅堂的建声,相同的设备发挥的水平高低不一的原因,一般都是建声条件的不同。无论多么优良的设备,一旦放在建声条件恶劣的环境中,肯定不会达到好的结果;而建声要求还会因为工程的使用要求不同而不同,也会受建筑装饰质量的影响。建声条件好的厅堂应该是混响合理,声音扩散性好,没有声聚焦、没有可闻的振动噪声、没有声阴影、没有声驻波等等;建声的要求不能单方面由音响设计人员进行,它需要建筑装饰技术人员的有力配合,选择一种好的吸音材料,使其音质达到最佳效果。
吸声材料在降低室内噪声,改善室内音质方面有着十分重要的作用,越来越受到人们的重视。吸声材料种类很多,不同的材质、不同的外观、不同的结构吸声系数也各不相同,运用时可以根据计算,确定吸声材料数量,选择具体材料时需兼顾吸声和美观的要求。由于会议厅采用短混响,因此,必须选用强吸声的结构。又因强吸声处理,因此建筑师经常采用各种容易引起声学缺陷的体形,如圆形、椭圆形、卵形平面、穹形屋顶等。而控制音质缺陷的措施,除了配置扩散结构外,通常用强吸声方法,因为它同时起到控制混响时间的作用。
低密度粘胶基炭纤维复合材料对各个频率的声音均具有优良的吸声效果,加速吸音效率,起到了隔声降噪的效果,同时还具有阻燃隔热的作用。
发明内容
本发明的目的是针对现有技术的不足,而提供一种工艺简单、硬化效果好、具有防水、防火、抗老化、抗冲击能力好,用材低能耗、环保、废弃后对环境无污染,在使用过程中,吸声效果好等优点的石墨烯改性粘胶基炭纤维复合材料会议室吸音板的制备方法。
为了实现上述目的,本发明所采用的技术方案是:一种石墨烯改性粘胶基炭纤维复合材料会议室吸音板的制备方法,其特征在于该方法包括以下步骤:
步骤一:采用粘胶基炭纤维针刺体作为预制体材料,预制体密度控制在0.08 g/cm3-0.15g/cm3。
步骤二:配置树脂浸渍液,将树脂和酒精按一定的比例混合搅拌,其混合比例为树脂:酒精=1:(3-10),搅拌均匀。然后将石墨烯按一定比例添加到树脂浸渍液中,搅拌均匀。
步骤三:将步骤二中配置好的树脂浸渍液加压浸渍在预制体坯体内,压力为0.8MPa-4.0MPa下进行浸渍。
步骤四:将步骤三中浸渍处理后坯体置于固化炉内进行固化处理,固化温度为110℃-200℃。
步骤五:将步骤四中固化处理的坯体置于炭化炉内进行炭化处理,炭化温度为700℃-900℃。
步骤六:将步骤五出炉的会议室吸音板坯体经过机械加工后,制得石墨烯改性粘胶基炭纤维复合材料会议室吸音板。其最终密度为0.50 g/cm3-1.50 g/cm3。
上述的一种石墨烯改性粘胶基炭纤维复合材料会议室吸音板的制备方法,其特征在于,步骤一中所述的粘胶基炭纤维丝束为1K-12K,粘胶基炭纤维针刺体布针密度为10针/cm2-40针/cm2,粘胶基炭纤维长度控制在5mm-100mm。
上述的一种石墨烯改性粘胶基炭纤维复合材料会议室吸音板的制备方法,其特征在于,步骤二中所述的树脂为环氧树脂或酚醛树脂,酒精为工业酒精,纯度≥95%,石墨烯添加量为0.05wt%-0.5 wt%。
上述的一种石墨烯改性粘胶基炭纤维复合材料会议室吸音板的制备方法,其特征在于,步骤三中所述的浸渍工艺,浸渍时间为2h-10h。
上述的一种石墨烯改性粘胶基炭纤维复合材料会议室吸音板的制备方法,其特征在于,步骤四中所述的固化升温速率为5℃/h-20℃/h,保温2h-5h。
上述的一种石墨烯改性粘胶基炭纤维复合材料会议室吸音板的制备方法,其特征在于,步骤五中所述的炭化升温速率为5℃/h-30℃/h,保温2h-6h。
本发明与现有技术相比具有以下优点:
1、与传统吸音板的制备技术相比,本发明采用粘胶基炭纤维作为骨架,树脂炭基体作为增强体且经过石墨烯改性的低密度、多孔炭/炭吸音板具有一定的机械强度,抗老化和耐腐蚀性能好等优点。
2、本发明工艺简单,吸声效果好,并且易于大批量生产,可按照不同要求将材料随意进行加工切割成型。
附图说明
图1是本发明制备石墨烯改性粘胶基炭纤维复合材料会议室吸音板的工艺流程框图。
具体实施方式
实施例1
步骤一:采用粘胶基炭纤维针刺体作为预制体材料,预制体密度控制在0.08 g/cm3,粘胶基炭纤维丝束为1K,布针密度为10针/cm2,粘胶基炭纤维长度控制在5mm-100mm。
步骤二:配置树脂浸渍液,将树脂和酒精按一定的比例混合搅拌,其混合比例为树脂:酒精=1:3,树脂为环氧树脂,酒精为工业酒精,纯度≥95%,石墨烯添加量为0.05wt%,搅拌均匀。
步骤三:将步骤二中配置好的树脂浸渍液加压浸渍在预制体坯体内,压力为0.8MPa下进行浸渍,浸渍时间为2h。
步骤四:将步骤三中浸渍处理后坯体置于固化炉内进行固化处理,固化温度为110℃,固化升温速率为5℃/h,保温2h。
步骤五:将步骤四中固化处理的坯体置于炭化炉内进行炭化处理,炭化温度为700℃,炭化升温速率为5℃/h,保温2h。
步骤六:将步骤五出炉的会议室吸音板坯体经过机械加工后,制得石墨烯改性粘胶基炭纤维复合材料会议室吸音板。其最终密度为0.50 g/cm3。
实施例2
步骤一:采用粘胶基炭纤维针刺体作为预制体材料,预制体密度控制在0.10 g/cm3,粘胶基炭纤维丝束为3K,布针密度为20针/cm2,粘胶基炭纤维长度控制在5mm-100mm。
步骤二:配置树脂浸渍液,将树脂和酒精按一定的比例混合搅拌,其混合比例为树脂:酒精=1:6,树脂为酚醛树脂,酒精为工业酒精,纯度≥95%,石墨烯添加量为0.1wt%,搅拌均匀。
步骤三:将步骤二中配置好的树脂浸渍液加压浸渍在预制体坯体内,压力为2.0MPa下进行浸渍,浸渍时间为2.5h。
步骤四:将步骤三中浸渍处理后坯体置于固化炉内进行固化处理,固化温度为150℃,固化升温速率为10℃/h,保温3h。
步骤五:将步骤四中固化处理的坯体置于炭化炉内进行炭化处理,炭化温度为800℃,炭化升温速率为10℃/h,保温3h。
步骤六:将步骤五出炉的会议室吸音板坯体经过机械加工后,制得石墨烯改性粘胶基炭纤维复合材料会议室吸音板。其最终密度为1.16 g/cm3。
实施例3
步骤一:采用粘胶基炭纤维针刺体作为预制体材料,预制体密度控制在0.15g/cm3,粘胶基炭纤维丝束为12K,布针密度为40针/cm2,粘胶基炭纤维长度控制在5mm-100mm。
步骤二:配置树脂浸渍液,将树脂和酒精按一定的比例混合搅拌,其混合比例为树脂:酒精=1:10,树脂为环氧树脂,酒精为工业酒精,纯度≥95%,石墨烯添加量为0.5 wt%,搅拌均匀。
步骤三:将步骤二中配置好的树脂浸渍液加压浸渍在预制体坯体内,压力为4.0MPa下进行浸渍,浸渍时间为10h。
步骤四:将步骤三中浸渍处理后坯体置于固化炉内进行固化处理,固化温度为200℃,固化升温速率为20℃/h,保温5h。
步骤五:将步骤四中固化处理的坯体置于炭化炉内进行炭化处理,炭化温度为900℃,炭化升温速率为20℃/h,保温5h。
步骤六:将步骤五出炉的会议室吸音板坯体经过机械加工后,制得石墨烯改性粘胶基炭纤维复合材料会议室吸音板。其最终密度为1.50 g/cm3。
以上所述,仅是本发明的较佳实施例,并非对本发明作任何限制,凡是根据本发明技术实质对以上实施例所作的任何简单修改、变更以及等效结构变换,均仍属于本发明技术方案的保护范围内。
Claims (6)
1.一种石墨烯改性粘胶基炭纤维复合材料会议室吸音板的制备方法,其特征在于该方法包括以下步骤:
步骤一:采用粘胶基炭纤维针刺体作为预制体材料,预制体密度控制在0.08 g/cm3-0.15g/cm3;
步骤二:配置树脂浸渍液,将树脂和酒精按一定的比例混合搅拌,其混合比例为树脂:酒精=1:(3-10),搅拌均匀,然后将石墨烯按一定比例添加到树脂浸渍液中,搅拌均匀;
步骤三:将步骤二中配置好的树脂浸渍液加压浸渍在预制体坯体内,压力为0.8MPa-4.0MPa下进行浸渍;
步骤四:将步骤三中浸渍处理后坯体置于固化炉内进行固化处理,固化温度为110℃-200℃;
步骤五:将步骤四中固化处理的坯体置于炭化炉内进行炭化处理,炭化温度为700℃-900℃;
步骤六:将步骤五出炉的高铁降噪坯体经过机械加工后,制得石墨烯改性粘胶基炭纤维复合材料会议室吸音板,其最终密度为0.50 g/cm3-1.50g/cm3。
2.根据权利要求1所述的一种石墨烯改性粘胶基炭纤维复合材料会议室吸音板的制备方法,其特征在于,步骤一中所述的粘胶基炭纤维丝束为1K-12K,粘胶基炭纤维针刺体布针密度为10针/cm2-40针/cm2,粘胶基炭纤维长度控制在5mm-100mm。
3.根据权利要求1所述的一种石墨烯改性粘胶基炭纤维复合材料会议室吸音板的制备方法,其特征在于,步骤二中所述的树脂为环氧树脂或酚醛树脂,酒精为工业酒精,纯度≥95%,石墨烯添加量为0.05wt%-0.5 wt%。
4.根据权利要求1所述的一种石墨烯改性粘胶基炭纤维复合材料会议室吸音板的制备方法,其特征在于,步骤三中所述的浸渍工艺,浸渍时间为2h-10h。
5.根据权利要求1所述的一种石墨烯改性粘胶基炭纤维复合材料会议室吸音板的制备方法,其特征在于,步骤四中所述的固化升温速率为5℃/h-20℃/h,保温2h-5h。
6.根据权利要求1所述的一种石墨烯改性粘胶基炭纤维复合材料会议室吸音板的制备方法,其特征在于,步骤五中所述的炭化升温速率为5℃/h-30℃/h,保温2h-6h。
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