CN108777887A - 一种石墨烯发热膜及其制备方法 - Google Patents
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Abstract
本发明公开一种石墨烯发热膜及其制备方法,由石墨烯浆料在基材上涂覆而成,所述石墨烯浆料包括氧化石墨烯粉末10‑20份、纳米竹炭粉5‑8份、水30‑50份、粘结剂3‑5份。本发明通过氧化石墨烯粉末与纳米竹炭粉复合而成,除了具备发热功能外,还可调节湿度、净化空气,特别适用于作为电暖器的发热元件,另外,相对于现有技术中,先制备石墨烯膜再转移至目标基底上,本发明石墨烯浆料制备工艺简单,直接涂覆于目标基底,省去转移过程,避免膜在转移过程中破碎,工艺稳定,生产效率高。
Description
技术领域
本发明属于石墨烯发热技术领域,具体涉及一种石墨烯发热膜及其制备方法。
背景技术
石墨烯是一种由碳原子以sp2杂化轨道组成六角型呈蜂巢晶格的二维碳纳米材料,具有优异的光学、电学、力学特性,在材料学、微纳加工、能源、生物医学和药物传递等方面具有重要的应用前景,被认为是一种未来革命性的材料。
电热膜是新兴的供暖方式之一,是一种以电能为源,通过红外辐射进行传热的结构,具有耐高压、耐潮湿、温度范围广、低收缩率等优良性能,因而得到了广泛的应用。石墨烯具有非常好的热传导性能、高强度以及超大的比表面积,单层石墨烯的导热系数高达5300W/mK,是目前为止导热系数最高的碳材料,使得石墨烯成为电热膜领域最吸引人的材料之一。
现有石墨烯发热膜成分单一,仅具备发热功能,并且主要通过抽滤或化学气相沉积的方法在金属基材上成膜,成膜后还需除去基材,再转移至目标基底上,转移时易破碎,工艺不稳定,生产效率低下。
发明内容
本发明的目的在于:针对上述现有石墨烯发热膜功能单一,以及成膜复杂、转移困难的问题,本发明提供一种石墨烯发热膜及其制备方法。
本发明采用的技术方案如下:
一种石墨烯发热膜,由石墨烯浆料在基材上涂覆而成,所述石墨烯浆料包括氧化石墨烯粉末10-20份、纳米竹炭粉5-8份、水30-50份、粘结剂3-5份。
进一步地,石墨烯浆料包括氧化石墨烯粉末15份、纳米竹炭粉6份、水40份、粘结剂4份。
本发明石墨烯浆料由氧化石墨烯粉末和纳米竹炭粉组成,受热时,氧化石墨烯粉末和纳米竹炭粉均可辐射远红外线,远红外线有较强的渗透力和辐射力,具有显著的温控效应和共振效应,易被物体吸收并转化为物体的内能,从而实现快速发热。并且,纳米竹炭粉本身细密多孔,比表面积大,若周围环境湿度大时,可吸收水分,若周围环境干燥,则可释放水分,因此,本发明制备的石墨烯发热膜工作时还可调节室内湿度,纳米竹炭粉还能吸附空气中的浮游物质,对硫化物、氢化物、甲醇、苯、酚等有害化学物质起到吸附、分解异味和消臭作用,因此,本发明可作为电暖器的发热元件,在对空气加热的同时净化空气、调节空气湿度。
进一步地,纳米竹炭粉为负载有纳米二氧化钛的纳米改性竹炭粉。纳米二氧化钛光催化性强,可生成具有高催化活性的游离基,产生强的光氧化及还原能力,可催化、光解空气中的甲醛等有机物及部分无机物,进一步提高石墨烯发热膜对空气的净化效果。
进一步地,粘结剂为酚醛树脂。酚醛树脂耐高温,可保证石墨烯发热膜在温度较高的情况下仍能保持发热膜结构的整体性和稳定性。
进一步地,基材为纤维面料。将石墨烯浆料涂覆于纤维面料上,可用于制作床单、被套或内衣等,辐射远红外,人体吸收后使人体细胞中的分子、原子共振,活化细胞组织,加速血液循环,有效改善人体微循环,净化体内垃圾,起到理疗作用。
一种石墨烯发热膜的制备方法,包括以下步骤:
(1)将氧化石墨烯粉末均匀分散至20-30份水中,制得石墨烯悬浮液;
(2)将纳米竹炭粉加入至煮沸的10-20份中并搅拌,制得竹炭悬浮液;
(3)将步骤(1)制备的石墨烯悬浮液加入至步骤(2)制备的竹炭悬浮液中搅拌均匀,制得混合乳液;
(4)向混合乳液中加入粘结剂搅拌均匀,即得石墨烯浆料;
(5)将石墨烯浆料均匀涂覆于基材表面,经干燥后,即得石墨烯发热膜。
本发明利用纳米竹炭粉的强吸附能力,使氧化石墨烯粉负载在纳米竹炭粉中,并加入粘结剂形成石墨烯浆料,涂覆于目标基底上即可。相对于现有技术中,先制备石墨烯膜再转移至目标基底上,本发明石墨烯浆料制备工艺简单,直接涂覆于目标基底,省去转移过程,避免膜在转移过程中破碎。
综上所述,由于采用了上述技术方案,本发明的有益效果是:
1.本发明通过氧化石墨烯粉末与纳米竹炭粉复合而成,除了具备发热功能外,还可调节湿度、净化空气,特别适用于作为电暖器的发热元件,并且采用纳米改性竹炭粉可催化、光解空气中的甲醛等有机物及部分无机物,提高石墨烯发热膜对空气的净化效果;
2.本发明利用纳米竹炭粉的强吸附能力,使氧化石墨烯粉负载在纳米竹炭粉中,并加入粘结剂形成石墨烯浆料,涂覆于目标基底上即可,相对于现有技术中,先制备石墨烯膜再转移至目标基底上,本发明石墨烯浆料制备工艺简单,直接涂覆于目标基底,省去转移过程,避免膜在转移过程中破碎,工艺稳定,生产效率高。
具体实施方式
本说明书中公开的所有特征,除了互相排斥的特征和/或步骤以外,均可以以任何方式组合。
实施例1
一种石墨烯发热膜的制备方法,包括以下步骤:
(1)将氧化石墨烯粉末10份均匀分散至20份水中,制得石墨烯悬浮液;
(2)将纳米竹炭粉5份加入至煮沸的10份中并搅拌,制得竹炭悬浮液;
(3)将步骤(1)制备的石墨烯悬浮液加入至步骤(2)制备的竹炭悬浮液中搅拌均匀,制得混合乳液;
(4)向混合乳液中加入酚醛树脂3份搅拌均匀,即得石墨烯浆料;
(5)将石墨烯浆料均匀涂覆于基材表面,经干燥后,即得石墨烯发热膜。
实施例2
一种石墨烯发热膜的制备方法,包括以下步骤:
(1)将氧化石墨烯粉末15份均匀分散至25份水中,制得石墨烯悬浮液;
(2)将纳米改性竹炭粉6份加入至煮沸的15份中并搅拌,制得竹炭悬浮液;
(3)将步骤(1)制备的石墨烯悬浮液加入至步骤(2)制备的竹炭悬浮液中搅拌均匀,制得混合乳液;
(4)向混合乳液中加入粘结剂酚醛树脂4份搅拌均匀,即得石墨烯浆料;
(5)将石墨烯浆料均匀涂覆于纤维面料表面,经干燥后,即得石墨烯发热膜。
实施例3
一种石墨烯发热膜的制备方法,包括以下步骤:
(1)将氧化石墨烯粉末20份均匀分散至30份水中,制得石墨烯悬浮液;
(2)将纳米改性竹炭粉8份加入至煮沸的20份中并搅拌,制得竹炭悬浮液;
(3)将步骤(1)制备的石墨烯悬浮液加入至步骤(2)制备的竹炭悬浮液中搅拌均匀,制得混合乳液;
(4)向混合乳液中加入酚醛树脂5份搅拌均匀,即得石墨烯浆料;
(5)将石墨烯浆料均匀涂覆于纤维面料表面,经干燥后,即得石墨烯发热膜。
如上所述即为本发明的实施例。本发明不局限于上述实施方式,任何人应该得知在本发明的启示下做出的结构变化,凡是与本发明具有相同或相近的技术方案,均落入本发明的保护范围之内。
Claims (6)
1.一种石墨烯发热膜,由石墨烯浆料在基材上涂覆而成,其特征在于,所述石墨烯浆料包括氧化石墨烯粉末10-20份、纳米竹炭粉5-8份、水30-50份、粘结剂3-5份。
2.根据权利要求1所述的一种石墨烯发热膜,其特征在于,所述石墨烯浆料包括氧化石墨烯粉末15份、纳米竹炭粉6份、水40份、粘结剂4份。
3.根据权利要求1或2所述的一种石墨烯发热膜,其特征在于,所述纳米竹炭粉为负载有纳米二氧化钛的纳米改性竹炭粉。
4.根据权利要求1或2所述的一种石墨烯发热膜,其特征在于,所述粘结剂为酚醛树脂。
5.根据权利要求1所述的一种石墨烯发热膜,其特征在于,所述基材为纤维面料。
6.一种石墨烯发热膜的制备方法,其特征在于,包括以下步骤:
(1)将氧化石墨烯粉末均匀分散至20-30份水中,制得石墨烯悬浮液;
(2)将纳米竹炭粉加入至煮沸的10-20份中并搅拌,制得竹炭悬浮液;
(3)将步骤(1)制备的石墨烯悬浮液加入至步骤(2)制备的竹炭悬浮液中搅拌均匀,制得混合乳液;
(4)向混合乳液中加入粘结剂搅拌均匀,即得石墨烯浆料;
(5)将石墨烯浆料均匀涂覆于基材表面,经干燥后,即得石墨烯发热膜。
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Cited By (3)
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CN111432508A (zh) * | 2020-04-15 | 2020-07-17 | 威海无缝新材料有限公司 | 一种石墨烯快发热膜及其制备方法 |
CN112642452A (zh) * | 2020-11-24 | 2021-04-13 | 清华大学 | 能降解有机污染物的功能加热浆料及其制备方法和应用 |
CN115558346A (zh) * | 2022-10-25 | 2023-01-03 | 广东电网有限责任公司 | 一种电热涂料及其制备方法和应用 |
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