Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-thermal-conductivity graphene heat expansion plate and preparation method thereof
The invention relates to the technical field of thermal management materials, and particularly discloses a high-thermal-conductivity graphene heat expansion plate and a preparation method thereof.The preparation method comprises the following steps that 80-90 parts by weight of modified graphene is added into absolute ethyl alcohol to be oscillated, then suspension liquid is prepared, 5-8 parts by weight of 20-100 nm doped titanium is added into the suspension liquid, the suspension liquid is stirred, and the high-thermal-conductivity graphene heat expansion plate is obtained; oscillating and mixing, spraying on a metal substrate, stripping in water, and reducing at 2000-2500 DEG C to form a graphene layer; 2-7 parts of modified carbon nanotubes, 2-7 parts of silicon nitride ultrathin sheets and a graphene layer are mixed in ethyl alcohol, mechanical pressure forming is conducted at the temperature of 150-200 DEG C, and the graphene heat expansion plate is obtained; wherein the modified graphene is obtained by modifying graphene oxide with nematic phase liquid crystal and then carbonizing and reducing; the modified carbon nano tube is obtained by modifying a carbon nano tube through a nematic phase liquid crystal modifier; the thickness of the silicon nitride ultrathin sheet is 1-10nm; the doped titanium is formed by vaporizing and permeating titanium particles with the particle size of 20-200 microns at the temperature of 1800-2800 DEG C. The graphene heat expansion plate prepared by the method disclosed by the invention has excellent heat conduction efficiency.
本发明涉及热管理材料的技术领域，具体公开了一种高导热石墨烯扩热板及其制备方法，制备方法包括以下步骤：将重量份为80～90份的改性石墨烯加入无水乙醇中震荡后制得悬浮液，再将5～8份20～100nm的掺杂钛加入悬浮液中，震荡混合后喷涂在金属基底上，在水中剥离后在2000～2500℃下还原形成石墨烯层；将2～7份改性碳纳米管、2～7份氮化硅超薄片与石墨烯层在乙醇中混合，在150～200℃下机械加压成型，得到石墨烯扩热板；其中，改性石墨烯由氧化石墨烯经向列相液晶修饰后经碳化还原得到；改性碳纳米管由碳纳米管经向列相液晶修饰剂改性得到；氮化硅超薄片的厚度为1～10nm；掺杂钛由粒径为20～200μm微米钛颗粒在1800～2800℃下汽化、渗透形成。本发明中方法制得的石墨烯扩热板具有优良的热传导效率。
High-thermal-conductivity graphene heat expansion plate and preparation method thereof
The invention relates to the technical field of thermal management materials, and particularly discloses a high-thermal-conductivity graphene heat expansion plate and a preparation method thereof.The preparation method comprises the following steps that 80-90 parts by weight of modified graphene is added into absolute ethyl alcohol to be oscillated, then suspension liquid is prepared, 5-8 parts by weight of 20-100 nm doped titanium is added into the suspension liquid, the suspension liquid is stirred, and the high-thermal-conductivity graphene heat expansion plate is obtained; oscillating and mixing, spraying on a metal substrate, stripping in water, and reducing at 2000-2500 DEG C to form a graphene layer; 2-7 parts of modified carbon nanotubes, 2-7 parts of silicon nitride ultrathin sheets and a graphene layer are mixed in ethyl alcohol, mechanical pressure forming is conducted at the temperature of 150-200 DEG C, and the graphene heat expansion plate is obtained; wherein the modified graphene is obtained by modifying graphene oxide with nematic phase liquid crystal and then carbonizing and reducing; the modified carbon nano tube is obtained by modifying a carbon nano tube through a nematic phase liquid crystal modifier; the thickness of the silicon nitride ultrathin sheet is 1-10nm; the doped titanium is formed by vaporizing and permeating titanium particles with the particle size of 20-200 microns at the temperature of 1800-2800 DEG C. The graphene heat expansion plate prepared by the method disclosed by the invention has excellent heat conduction efficiency.
本发明涉及热管理材料的技术领域，具体公开了一种高导热石墨烯扩热板及其制备方法，制备方法包括以下步骤：将重量份为80～90份的改性石墨烯加入无水乙醇中震荡后制得悬浮液，再将5～8份20～100nm的掺杂钛加入悬浮液中，震荡混合后喷涂在金属基底上，在水中剥离后在2000～2500℃下还原形成石墨烯层；将2～7份改性碳纳米管、2～7份氮化硅超薄片与石墨烯层在乙醇中混合，在150～200℃下机械加压成型，得到石墨烯扩热板；其中，改性石墨烯由氧化石墨烯经向列相液晶修饰后经碳化还原得到；改性碳纳米管由碳纳米管经向列相液晶修饰剂改性得到；氮化硅超薄片的厚度为1～10nm；掺杂钛由粒径为20～200μm微米钛颗粒在1800～2800℃下汽化、渗透形成。本发明中方法制得的石墨烯扩热板具有优良的热传导效率。
High-thermal-conductivity graphene heat expansion plate and preparation method thereof
一种高导热石墨烯扩热板及其制备方法
MIAO ZONGCHENG (Autor:in) / YI HAO (Autor:in) / WANG DONG (Autor:in) / ZHAO YUZHEN (Autor:in) / HE ZEMIN (Autor:in) / ZHANG RUIYIN (Autor:in)
31.10.2023
Patent
Elektronische Ressource
Chinesisch
Preparation method of high-thermal-conductivity graphene plate
| Europäisches Patentamt | 2021
High-thermal-conductivity graphene composite heat dissipation film and preparation method thereof
| Europäisches Patentamt | 2021
High-thermal-conductivity graphene composite film and preparation method thereof
| Europäisches Patentamt | 2023
High-thermal-conductivity low-expansion carbon ceramic material and preparation method thereof
| Europäisches Patentamt | 2024
High-thermal-conductivity and high-thickness graphene composite film and preparation method thereof
| Europäisches Patentamt | 2024