CN109456081A - 一种石墨烯改性低密度审讯室防撞吸音板的制备方法 - Google Patents

一种石墨烯改性低密度审讯室防撞吸音板的制备方法 Download PDF

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CN109456081A
CN109456081A CN201811647239.2A CN201811647239A CN109456081A CN 109456081 A CN109456081 A CN 109456081A CN 201811647239 A CN201811647239 A CN 201811647239A CN 109456081 A CN109456081 A CN 109456081A
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梁智萍
马开梅
何平伟
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Xinghua Precision Casting And Forging Industry Research Institute Co Ltd
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Abstract

本发明公开了一种石墨烯改性低密度审讯室防撞吸音板的制备方法，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，制得石墨烯改性低密度审讯室防撞吸音板。本发明采用炭纤维作为骨架，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

一种石墨烯改性低密度审讯室防撞吸音板的制备方法
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、低密度审讯室防撞吸音板材。
背景技术
派出所审讯室一般经常用到的吸音材料有：防撞吸音隔音墙板有着良好的吸音效果和装饰效果，其吸音效率可以达到0.9，而且安装施工方便。防撞吸音隔音墙板属于多孔性软装饰 吸音材料，派出所审讯室使用防撞吸音隔音墙板可以防止防治犯人在审讯过程中出现自残行为。防撞墙。所谓的防撞吸音隔音墙板是属于简易装吸音材料，防撞吸音隔音墙板安装简便快捷。
防撞吸音隔音墙板具有隔音、静音、降噪、阻燃、隔热、保温等作用，材质均匀坚实，不但富有弹性、韧性、耐磨、抗冲击、不易划破，其与空腔构成的薄板共振吸声体效果极好，是一种宽频带的高效吸声材料。此外防撞吸音隔音墙板质轻，材料性能优异，不像一些脆性材料如穿孔石膏板及水泥纤维加压板等产生碎片或碎块存在坠落的危险，甲醛0.05/1的释放量标准，也远远小于国家规定甲醛释放量小于或等于1.5的标准，是代替以往层板加海绵或玻璃纤维的新型声学材料，且易销毁不污染环境，可循环再用。
低密度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低密度审讯室防撞吸音板的制备方法。
为了实现上述目的，本发明所采用的技术方案是：一种石墨烯改性低密度审讯室防撞吸音板的制备方法，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/cm3-0.15g/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：（2-10），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：将步骤五出炉的低密度复合材料坯体经过机械加工后，制得石墨烯改性低密度审讯室防撞吸音板。其最终密度为0.80 g/cm3-1.50 g/cm3。
上述的一种石墨烯改性低密度审讯室防撞吸音板的制备方法，其特征在于，步骤一中所述的炭纤维为PAN基炭纤维，丝束数为1K-12K，炭纤维针刺体布针密度为20针/cm2-40针/cm2，炭纤维长度控制在5mm-100mm。
上述的一种石墨烯改性低密度审讯室防撞吸音板的制备方法，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0.1wt%-0.5 wt%。
上述的一种石墨烯改性低密度审讯室防撞吸音板的制备方法，其特征在于，步骤三中所述的浸渍工艺，浸渍时间为1h-10h。
上述的一种石墨烯改性低密度审讯室防撞吸音板的制备方法，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1h-5h。
上述的一种石墨烯改性低密度审讯室防撞吸音板的制备方法，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1h-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低密度审讯室防撞吸音板的工艺流程框图。
具体实施方式
实施例1
步骤一：采用炭纤维针刺体作为预制体材料，预制体密度控制在0.10g/cm3，炭纤维为PAN基炭纤维，丝束数为1K，布针密度为20针/cm2，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=1：2，树脂为环氧树脂，酒精为工业酒精，纯度≥95%，石墨烯添加量为0.1wt%，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0.8MPa下进行浸渍，浸渍时间为1h。
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1h。
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1h。
步骤六：将步骤五出炉的低密度复合材料坯体经过机械加工后，制得石墨烯改性低密度审讯室防撞吸音板。其最终密度为0.80 g/cm3。
实施例2
步骤一：采用炭纤维针刺体作为预制体材料，预制体密度控制在0.14 g/cm3，炭纤维为PAN基炭纤维，丝束数为6K，布针密度为30针/cm2，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0.3wt%，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：将步骤五出炉的低密度复合材料坯体经过机械加工后，制得石墨烯改性低密度审讯室防撞吸音板。其最终密度为1.32 g/cm3。
实施例3
步骤一：采用炭纤维针刺体作为预制体材料，预制体密度控制在0.15g/cm3，炭纤维为PAN基炭纤维，丝束数为12K，布针密度为40针/cm2，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：将步骤五出炉的低密度复合材料坯体经过机械加工后，制得石墨烯改性低密度审讯室防撞吸音板。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)

1.一种石墨烯改性低密度审讯室防撞吸音板的制备方法，其特征在于该方法包括以下步骤：
步骤一：采用炭纤维针刺体作为预制体材料，预制体密度控制在0.10g/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：（2-10），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：将步骤五出炉的低密度复合材料坯体经过机械加工后，制得石墨烯改性低密度审讯室防撞吸音板，其最终密度为0.80 g/cm3-1.50g/cm3。
2.根据权利要求1所述的一种石墨烯改性低密度审讯室防撞吸音板的制备方法，其特征在于，步骤一中所述的炭纤维为PAN基炭纤维，丝束数为1K-12K，炭纤维针刺体布针密度为20针/cm2-40针/cm2，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低密度审讯室防撞吸音板的制备方法，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0.1wt%-0.5 wt%。
4.根据权利要求1所述的一种石墨烯改性低密度审讯室防撞吸音板的制备方法，其特征在于，步骤三中所述的浸渍工艺，浸渍时间为1h-10h。
5.根据权利要求1所述的一种石墨烯改性低密度审讯室防撞吸音板的制备方法，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1h-5h。
6.根据权利要求1所述的一种石墨烯改性低密度审讯室防撞吸音板的制备方法，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1h-6h。
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