CN108340639A - 一种高导电性碳纤维板及其制备方法 - Google Patents

一种高导电性碳纤维板及其制备方法 Download PDF

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CN108340639A
CN108340639A CN201710851478.9A CN201710851478A CN108340639A CN 108340639 A CN108340639 A CN 108340639A CN 201710851478 A CN201710851478 A CN 201710851478A CN 108340639 A CN108340639 A CN 108340639A
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high conductivity
carbon fiber
carbon
fiber board
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蔡福泉
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Anhui Cxs New Material Co Ltd
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Abstract

本发明涉及新能源汽车材料技术领域，特别涉及一种高导电性碳纤维板及其制备方法。包括有多层碳纤维布及附着于碳纤维布上的导电阻燃附着物，该导电阻燃附着物包括有导电填充物、阻燃剂、固化剂及黏合树脂，导电填充物为碳纳米管，碳纳米管的重量百分比为0.3‑5，固化剂的重量百分比为10‑40，黏合树脂的重量百分比为40‑60，阻燃剂的重量百分比为2‑5。本发明的目的在于提供了一种阻燃性能好、导电性能好的一种高导电性碳纤维板及其制备方法。

Description

一种高导电性碳纤维板及其制备方法
技术领域
本发明涉及新能源汽车材料技术领域，特别涉及一种高导电性碳纤维板及其制备方法。
背景技术
碳纤维板材具有拉伸强度高、耐腐蚀性、抗震性、抗冲击性等良好性能。在航空、体育器材、建筑工业、消防等领域中均得到广泛使用，其成型工艺是将碳纤维浸渍树脂后在模具内固化并连续拉挤成型。采用优质碳纤维原料与良好基本树脂，碳纤维板材具有拉伸强度高、耐腐蚀性、抗震性、抗冲击性且具有导电性及阻燃性等良好性能。
这种碳纤维板的缺点是，一旦碳纤维板中间出现断裂，其导电性、导热性都会受到影响，导致整体导电性能差。
因此，有必要提供一种高导电性的碳纤维板材。
发明内容
为了克服背景技术的不足，本发明的目的在于提供了一种阻燃性能好、导电性能好的一种高导电性碳纤维板及其制备方法。
本发明所采用的技术方案是：一种高导电性碳纤维板，包括有多层碳纤维布及附着于碳纤维布上的导电阻燃附着物，该导电阻燃附着物包括有导电填充物、阻燃剂、固化剂及黏合树脂，导电填充物为碳纳米管，碳纳米管的重量百分比为0.3-5，固化剂的重量百分比为10-40，黏合树脂的重量百分比为40-60，阻燃剂的重量百分比为2-5
所述的导电填充物还包括有碳黑，碳黑的重量百分比为0-10。
所述的黏合树脂为环氧树脂、酚醛树脂或聚氨基树脂。
所述的阻燃剂为无卤阻燃剂，具体为复合三聚氰胺氰尿酸盐。
所述的固化剂为脂肪族多胺类固化剂、芳香族多胺类固化剂或酚醛类固化剂。
本发明还提出一种高导电性碳纤维板的制备方法，包括有以下步骤：
1)将0.3-5的碳纳米管、2-5的阻燃剂、40-60份黏合树脂搅拌混合均匀，搅拌时间30分钟-2小时，得到混合物；
2)向混合物中加入10-40份固化剂，搅拌混合1-5小时，得到高导电性碳纤维黏合树脂；
3)可进一步对高导电性碳纤维黏合树脂内加入碳黑；
4)用浸渍机将高导电性黏合树脂涂覆在碳纤维布上，涂覆厚度为100-400um，涂覆加热温度为40-80度，涂覆时间为10-100min，常温状态冷却2h以上，得到涂覆碳纤维布；
5)在多层涂覆碳纤维布两两之间涂覆胶黏剂，然后将多层涂覆碳纤维布通过热压机压合，得到高导电性碳纤维板。
所述的高导电性碳纤维板通过9层涂覆碳纤维布压合而成。
与现有技术相比，本发明的有益效果是：1、本发明的碳纤维板由多层碳纤维布层层重叠压合而成，如果断裂不易整体断裂，其强度增强；2、碳纤维布本身具有一定的导电性及阻燃性，然后在碳纤维布上再一次涂覆导电混合物及阻燃性，增强了碳纤维板的导电性能及阻燃性能，使导电性能至少提高30％；3、阻燃剂的添加，使得碳纤维板的阻燃性能更好，且阻燃剂为无卤阻燃剂，具有环保无毒的特点。
具体实施方式
本发明提供一种高导电性碳纤维板，包括有多层碳纤维布及附着于碳纤维布上的导电阻燃附着物，该导电阻燃附着物包括有导电填充物、阻燃剂、固化剂及黏合树脂，导电填充物为碳纳米管，碳纳米管的重量百分比为0.3-5，固化剂的重量百分比为20-50，黏合树脂的重量百分比为40-60，阻燃剂的重量百分比为2-5。
所述的导电填充物还包括有碳黑，碳黑的重量百分比为0-10，碳黑可以不添加，可以同碳纳米管配合添加。
所述的黏合树脂为环氧树脂、酚醛树脂或聚氨基树脂。
所述的阻燃剂为无卤阻燃剂，具体为复合三聚氰胺氰尿酸盐。
所述的固化剂为脂肪族多胺类固化剂、芳香族多胺类固化剂或酚醛类固化剂。
本发明还提出一种高导电性碳纤维板的制备方法，包括有以下步骤：
6)将1-10碳纳米管、2-5的复合三聚氰胺氰尿酸盐、30-60份环氧树脂
7)搅拌混合均匀，搅拌时间30分钟-2小时，得到混合物；
8)向混合物中加入10-40份固化剂，搅拌混合1-5小时，得到高导电性碳纤维黏合树脂；
9)可进一步对高导电性碳纤维黏合树脂内加入碳黑；
10)用浸渍机将高导电性黏合树脂涂覆在碳纤维布上，涂覆厚度为100-400um，涂覆加热温度为40-80度，涂覆时间为10-100min，常温状态冷却2h以上，得到涂覆碳纤维布；
11)在多层涂覆碳纤维布两两之间涂覆胶黏剂，然后将多层涂覆碳纤维布通过热压机压合，得到高导电性碳纤维板。
所述的高导电性碳纤维板通过9层涂覆碳纤维布压合而成。
实施例一：
1、选用碳纤维编织布，取2份碳纳米管、3的阻燃剂、60份黏合树脂搅拌混合，搅拌时间1小时，得到混合物；
2、在混合物中添加脂肪族多胺类固化剂30份，并添加5份碳黑，再次搅拌1小时，得到得到高导电性碳纤维黏合树脂；
3、用浸渍机将高导电性黏合树脂涂覆在碳纤维布上，涂覆厚度为200um，涂覆加热温度为50度，涂覆时间为30min，常温状态冷却2h以上，得到涂覆碳纤维布；
4、在多层涂覆碳纤维布两两之间涂覆胶黏剂，胶黏剂热熔胶，然后将多层涂覆碳纤维布通过热压机压合，得到高导电性碳纤维板。
经采用数字式四探针测试仪测量了样品的电阻率，其结果为3.3×10㎡ohm.cm对阻燃性能进行了测试，阻燃等级达到5VB。
实施例二：
1、选用碳纤维编织布，取4份碳纳米管、4的阻燃剂、55份黏合树脂搅拌混合，搅拌时间1小时，得到混合物；
3、在混合物中添加脂肪族多胺类固化剂35份，并添加2份碳黑，再次搅拌1小时，得到得到高导电性碳纤维黏合树脂；
3、用浸渍机将高导电性黏合树脂涂覆在碳纤维布上，涂覆厚度为200um，涂覆加热温度为50度，涂覆时间为30min，常温状态冷却2h以上，得到涂覆碳纤维布；
4、在多层涂覆碳纤维布两两之间涂覆胶黏剂，胶黏剂热熔胶，然后将多层涂覆碳纤维布通过热压机压合，得到高导电性碳纤维板。
经采用数字式四探针测试仪测量了样品的电阻率，其结果为2.6×10㎡ohm.cm对阻燃性能进行了测试，阻燃等级达到5VB。
实施例三：
1、选用碳纤维编织布，取5份碳纳米管、4.5的阻燃剂、50份黏合树脂搅拌混合，搅拌时间1小时，得到混合物；
4、在混合物中添加脂肪族多胺类固化剂40份，并添加0.5份碳黑，再次搅拌1小时，得到得到高导电性碳纤维黏合树脂；
3、用浸渍机将高导电性黏合树脂涂覆在碳纤维布上，涂覆厚度为200um，涂覆加热温度为50度，涂覆时间为30min，常温状态冷却2h以上，得到涂覆碳纤维布；
4、在多层涂覆碳纤维布两两之间涂覆胶黏剂，胶黏剂热熔胶，然后将多层涂覆碳纤维布通过热压机压合，得到高导电性碳纤维板。
经采用数字式四探针测试仪测量了样品的电阻率，其结果为1.5×10㎡ohm.cm对阻燃性能进行了测试，阻燃等级达到5VB。

Claims (7)

1.一种高导电性碳纤维板，其特征在于：包括有多层碳纤维布及附着于碳纤维布上的导电阻燃附着物，该导电阻燃附着物包括有导电填充物、阻燃剂、固化剂及黏合树脂，导电填充物为碳纳米管，碳纳米管的重量百分比为0.3-5，固化剂的重量百分比为10-40，黏合树脂的重量百分比为40-60，阻燃剂的重量百分比为2-5。
2.根据权利要求1所述的一种高导电性碳纤维板，其特征在于：导电填充物还包括有碳黑，碳黑的重量百分比为0-10。
3.根据权利要求1所述的一种高导电性碳纤维板，其特征在于：黏合树脂为环氧树脂、酚醛树脂或聚氨基树脂。
4.根据权利要求1所述的一种高导电性碳纤维板，其特征在于：所述的阻燃剂为无卤阻燃剂，具体为复合三聚氰胺氰尿酸盐。
5.根据权利要求1所述的一种高导电性碳纤维板，其特征在于：所述的固化剂为脂肪族多胺类固化剂、芳香族多胺类固化剂或酚醛类固化剂。
6.一种高导电性碳纤维板的制备方法，其特征在于，包括有以下步骤：
1)将0.3-5碳纳米管、2-5的阻燃剂、40-60份黏合树脂搅拌混合均匀，搅拌时间30分钟-2小时，得到混合物；
2)向混合物中加入10-40份固化剂，搅拌混合1-5小时，得到高导电性碳纤维黏合树脂；
3)可进一步对高导电性碳纤维黏合树脂内加入碳黑；
4)用浸渍机将高导电性黏合树脂涂覆在碳纤维布上，涂覆厚度为100-400um，涂覆加热温度为40-80度，涂覆时间为10-100min，常温状态冷却2h以上，得到涂覆碳纤维布；
5)在多层涂覆碳纤维布两两之间涂覆胶黏剂，然后将多层涂覆碳纤维布通过热压机压合，得到高导电性碳纤维板。
7.根据权利要求6所述的一种高导电性纤维板的制备方法，其特征在于：所述的高导电性碳纤维板通过9层涂覆碳纤维布压合而成。
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