CN110978655B - 各向同性型碳纤维网络结构及其制作方法 - Google Patents

各向同性型碳纤维网络结构及其制作方法 Download PDF

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CN110978655B
CN110978655B CN201910985323.3A CN201910985323A CN110978655B CN 110978655 B CN110978655 B CN 110978655B CN 201910985323 A CN201910985323 A CN 201910985323A CN 110978655 B CN110978655 B CN 110978655B
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范勇
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Abstract

各向同性型碳纤维网络结构及其制作方法涉及新材料领域。各向同性型碳纤维网络结构，呈片状，且由碳纤维布层和胶水层依次从左向后交替排布而成；碳纤维布层由一层碳纤维布和渗透在碳纤维布内的导热胶水构成，胶水层由导热胶水构成。各向同性型碳纤维网络结构的制作方法，步骤一、通过径向碳纤维线和纬向碳纤维线编织出碳纤维布；步骤二、将碳纤维布平铺，然后在其上方涂敷导热胶水，然后再附一层碳纤维布，然后再在其上涂敷导热胶水，依次重复叠加；步骤三、压实，排气，并进行高温定型；步骤四、高温定型结束后，将材料冷却至室温，进行裁切，获得各向同性型碳纤维网络结构。本产品制作简单，导热性能好。

Description

各向同性型碳纤维网络结构及其制作方法
技术领域
本发明涉及新材料领域，具体涉及碳纤维结构。
背景技术
碳纤维，是一种含碳量在95％以上的高强度、高模量纤维的新型纤维材料。碳纤维具有许多优良性能：密度低、比性能高、无蠕变、耐高温、耐疲劳、热膨胀系数小、耐腐蚀、X射线透过性好、导电导热性能好、电磁屏蔽性好等。
发明内容
本发明的目的在于，提供一种各向同性型碳纤维网络结构，利用碳纤维非常高的导热系数的特性，使其定向排布，从而达到最终产品优良的导热性能。
本发明的目的还在于，提供各向同性型碳纤维网络结构的制作方法，用于生产上述各向同性型碳纤维网络结构。
各向同性型碳纤维网络结构，其特征在于，呈片状，且由碳纤维布层和胶水层依次从左向后交替排布而成；
所述碳纤维布层由一层碳纤维布和渗透在所述碳纤维布内的导热胶水构成，所述胶水层由导热胶水构成。
所述碳纤维布包括至少一根位于水平方向上的径向碳纤维线、至少八根位于竖直方向上的纬向碳纤维线；
位于同一所述碳纤维布层内的径向碳纤维线上下排布且相互平行，位于同一所述碳纤维布层内的纬向碳纤维线前后排布且相互平行，任意一根纬向碳纤维线与和其在同一碳纤维布层内的所有径向碳纤维线交错并在交错的位置处相抵。
所述径向碳纤维线的密度为8根/25mm，所述纬向碳纤维线的密度为8根/25mm，所述碳纤维布的厚度为0.15mm。
所述导热胶水，包括液态硅橡胶、导热粉体，所述导热粉体的质量百分比为80％～85％。所述导热粉体优选为氧化铝，氧化锌，铝粉，石墨烯，碳纤维，碳纳米管等中的一种或几种。
各向同性型碳纤维网络结构的制作方法，其特征在于：
步骤一、通过径向碳纤维线和纬向碳纤维线编织出碳纤维布；
步骤二、将所述碳纤维布平铺，然后在其上方涂敷导热胶水，然后再附一层碳纤维布，然后再在其上涂敷导热胶水，依次重复叠加，形成“三明治”结构；
步骤三、将步骤二制得的“三明治”结构压实，排出层与层之间的气泡，并进行高温定型；
步骤四、高温定型结束后，将材料冷却至室温，沿着垂直于碳纤维布的平铺方向进行裁切，获得具有一定厚度的片状体，所述片状体即为各向同性型碳纤维网络结构。
步骤一中，所述径向碳纤维线的密度为8根/25mm，所述纬向碳纤维线的密度为8根/25mm，所述碳纤维布的厚度为0.15mm。所述碳纤维布的重量为140g/m2。
步骤二中，所述导热胶水，包括液态硅橡胶、导热粉体，所述导热粉体的质量百分比为80％～85％。所述导热粉体优选为氧化铝，氧化锌，铝粉，石墨烯，碳纤维，碳纳米管等中的一种或几种。所述导热胶水的涂覆方式为：取固定重量的胶水，如50g/层，倒入模具中，采用自流平方式，流平后放入一层碳纤维布，然后再到入相同重量的胶水，往复操作叠加起来。因为采用固定量的胶水，所以无多余胶水产生。步骤二中，优选温度优选为20℃-30℃。
步骤三中，压实的过程中，温度优选为20℃-30℃。高温定型时，温度优选为120℃-150℃，烘烤时间为1.5小时。在压实的过程中，可以向模具内发射超声波，通过超声波加快层与层之间的气泡的排出速度。
有益效果：本产品制作简单，导热性能好。
附图说明
图1为各向同性型碳纤维网络结构的结构示意图；
图2为图1中的结构的碳纤维布层的部分结构示意图；
图3为步骤四中裁切的示意图。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体图示进一步阐述本发明。
参照图1、图2、图3，各向同性型碳纤维网络结构，呈片状，且由碳纤维布层1和胶水层2依次从左向后交替排布而成；碳纤维布层1由一层碳纤维布和渗透在碳纤维布内的导热胶水构成，胶水层2由导热胶水构成。
碳纤维布包括至少一根位于水平方向上的径向碳纤维线3、至少八根位于竖直方向上的纬向碳纤维线4；位于同一碳纤维布层1内的径向碳纤维线3上下排布且相互平行，位于同一碳纤维布层1内的纬向碳纤维线4前后排布且相互平行，任意一根纬向碳纤维线4与和其在同一碳纤维布层1内的所有径向碳纤维线3交错并在交错的位置处相抵。径向碳纤维线3的密度为8根/25mm，纬向碳纤维线4的密度为8根/25mm，碳纤维布的厚度为0.15mm。导热胶水，包括液态硅橡胶、导热粉体，导热粉体的质量百分比为80％～85％。导热粉体优选为氧化铝，氧化锌，铝粉，石墨烯，碳纤维，碳纳米管等中的一种或几种。
各向同性型碳纤维网络结构的制作方法，包括：
步骤一、通过径向碳纤维线3和纬向碳纤维线4编织出碳纤维布。优选，径向碳纤维线3的密度为8根/25mm，纬向碳纤维线4的密度为8根/25mm，碳纤维布的厚度为0.15mm。碳纤维布的重量为140g/m2。
步骤二、将碳纤维布平铺，然后在其上方涂敷导热胶水，然后再附一层碳纤维布，然后再在其上涂敷导热胶水，依次重复叠加，形成“三明治”结构5。优选，导热胶水，包括液态硅橡胶、导热粉体，导热粉体的质量百分比为80％～85％。导热粉体优选为氧化铝，氧化锌，铝粉，石墨烯，碳纤维，碳纳米管等中的一种或几种。导热胶水的涂覆方式为：取固定重量的胶水，如50g/层，倒入模具中，采用自流平方式，流平后放入一层碳纤维布，然后再到入相同重量的胶水，往复操作叠加起来。因为采用固定量的胶水，所以无多余胶水产生。步骤二中，优选温度优选为20℃-30℃。
步骤三、将步骤二制得的“三明治”结构5压实，排出层与层之间的气泡，并进行高温定型。优选，压实的过程中，温度优选为20℃-30℃。高温定型时，温度优选为120℃-150℃，烘烤时间为1.5小时。在压实的过程中，可以向模具内发射超声波，通过超声波加快层与层之间的气泡的排出速度。
步骤四、高温定型结束后，将材料冷却至室温，沿着垂直于碳纤维布的平铺方向进行裁切，获得具有一定厚度的片状体6，片状体6即为各向同性型碳纤维网络结构。
以上显示和描述了本发明的基本原理、主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入本发明要求保护的范围内。本发明要求保护的范围由所附的权利要求书及其等效物界定。

Claims (6)

1.各向同性型碳纤维网络结构的制作方法，其特征在于：
步骤一、通过径向碳纤维线和纬向碳纤维线编织出碳纤维布；
步骤二、将所述碳纤维布平铺，然后在其上方涂敷导热胶水，然后再附一层碳纤维布，然后再在其上涂敷导热胶水，依次重复叠加，形成“三明治”结构，所述导热胶水，包括液态硅橡胶、导热粉体，所述导热粉体的质量百分比为80%~85%；
步骤三、将步骤二制得的“三明治”结构压实，排出层与层之间的气泡，并进行高温定型；
步骤四、高温定型结束后，将材料冷却至室温，沿着垂直于碳纤维布的平铺方向进行裁切，获得具有一定厚度的片状体，所述片状体即为各向同性型碳纤维网络结构；
各向同性型碳纤维网络结构，呈片状，且由碳纤维布层和胶水层依次从左向后交替排布而成；
所述碳纤维布层由一层碳纤维布和渗透在所述碳纤维布内的导热胶水构成，所述胶水层由导热胶水构成。
2.根据权利要求1所述的各向同性型碳纤维网络结构的制作方法，其特征在于，步骤一中，所述径向碳纤维线的密度为8根/25mm，所述纬向碳纤维线的密度为8根/25mm，所述碳纤维布的厚度为0.15mm，所述碳纤维布的重量为140g/m2。
3.根据权利要求1所述的各向同性型碳纤维网络结构的制作方法，其特征在于，步骤二中，所述导热胶水的涂覆方式为：取固定重量的胶水，倒入模具中，采用自流平方式，流平后放入一层碳纤维布，然后再到入相同重量的胶水，往复操作叠加起来。
4.根据权利要求1所述的各向同性型碳纤维网络结构的制作方法，其特征在于，步骤三中，压实的过程中，温度为20℃-30℃；高温定型时，温度为120℃-150℃。
5.根据权利要求1所述的各向同性型碳纤维网络结构的制作方法，其特征在于，所述碳纤维布包括至少一根位于水平方向上的径向碳纤维线、至少八根位于竖直方向上的纬向碳纤维线；
位于同一所述碳纤维布层内的径向碳纤维线上下排布且相互平行，位于同一所述碳纤维布层内的纬向碳纤维线前后排布且相互平行，任意一根纬向碳纤维线与和其在同一碳纤维布层内的所有径向碳纤维线交错并在交错的位置处相抵。
6.根据权利要求1所述的各向同性型碳纤维网络结构的制作方法，其特征在于，所述导热粉体为氧化铝、氧化锌、铝粉、石墨烯、碳纤维、碳纳米管中的一种或几种。
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CN1040608A (zh) * 1988-08-25 1990-03-21 丸善石油化学株式会社 制备用于制造高性能型碳纤维的沥青及用于制造通用型碳纤维的沥青的方法
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CN103663407A (zh) * 2012-09-19 2014-03-26 益阳祥瑞科技有限公司 碳纸叠层复合隔热内衬
CN104893653A (zh) * 2015-06-30 2015-09-09 苏州龙腾万里化工科技有限公司 一种有机硅耐磨导热耐高温粘合剂

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CN1040608A (zh) * 1988-08-25 1990-03-21 丸善石油化学株式会社 制备用于制造高性能型碳纤维的沥青及用于制造通用型碳纤维的沥青的方法
CN103663407A (zh) * 2012-09-19 2014-03-26 益阳祥瑞科技有限公司 碳纸叠层复合隔热内衬
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