CN112980369A - 一种石墨烯高导热材料 - Google Patents
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Abstract
本发明涉及石墨烯技术领域,公开了一种石墨烯高导热材料,包括如下原料组份:10~16份纳米管状石墨烯、20~30份双酚A环氧树脂、30~40份双酚F环氧树脂、20~30份改性硫醇固化剂、3~6份疏水性气相二氧化硅、1~3份催化剂。本发明的石墨烯导热材料,与现有的石墨烯导热材料相比,导热系数高,粘结强度高。
Description
技术领域
本发明涉及石墨烯技术领域,具体公开了一种石墨烯高导热材料。
背景技术
石墨烯(Graphene)是一种以sp2杂化连接的碳原子紧密堆积成单层二维蜂窝状晶格结构的新材。石墨烯具有优异的光学、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。
现有的石墨烯材料应用于现有的电子产品时,导热系数一般都在1W/(m·K)以内导热系数较低,为了提高产品的导热系数在2W/(m·K)及以上时粘结强度急剧下降,只能达到原来的20%,同时石墨烯应用于普通的导热填充料时,产品脆而容易开裂。
发明内容
本发明意在提供一种石墨烯高导热材料,以提高石墨烯材料的导热系数。
为了达到上述目的,本发明的基础方案如下:一种石墨烯高导热材料,包括如下质量份数的原料:10~16份纳米管状石墨烯、20~30份双酚A环氧树脂、30~40份双酚F环氧树脂、20~30份改性硫醇固化剂、3~6份疏水性气相二氧化硅、1~3份催化剂;
制备步骤如下:
步骤一:向双行星搅拌机内加入双酚A环氧树脂和双酚F环氧树脂,通过双行星搅拌机对双酚A环氧树脂和双酚F环氧树脂进行搅拌2h脱水,以形成第一混合物;
步骤二:向第一混合物内加入改性硫醇固化剂,并通过双行星搅拌机对第一混合物和改性硫醇固化剂搅拌1h脱水,以形成第二混合物;
步骤三:向第二混合物内加入疏水性气相二氧化硅,并通过双行星搅拌机对第二混合物和疏水性气相二氧化硅搅拌1h脱水,以形成第三混合物;
步骤四:向第三混合物内加入催化剂,并通过双行星搅拌机催化剂和第三混合物进行搅拌1h,并控温30℃;
步骤五:检测、出料、包装。
进一步,包括如下质量份数的原料:10份纳米管状石墨烯、20份双酚A环氧树脂、30份双酚F环氧树脂、20份改性硫醇固化剂、3份疏水性气相二氧化硅、1份催化剂。
进一步,包括如下质量份数的原料:10份纳米管状石墨烯、20份双酚A环氧树脂、30份双酚F环氧树脂、20份改性硫醇固化剂、3份疏水性气相二氧化硅、1份催化剂。
进一步,包括如下质量份数的原料:16份纳米管状石墨烯、30份双酚A环氧树脂、40份双酚F环氧树脂、30份改性硫醇固化剂、6份疏水性气相二氧化硅、3份催化剂。
进一步,步骤一、步骤二、步骤三和步骤四中,在搅拌过程中进行加温和抽真空。
进一步,加温的温度为90℃。
进一步,抽真空0.1MPa。
进一步,步骤一、步骤二和步骤三中双行星搅拌机的转速为3000r/s。
进一步,步骤四中双行星搅拌机的转速为800r/s。
进一步,步骤三中形成第三混合物后,加温的温度降低至30℃。
本发明的原理以及有益效果:本方案中,在胶体内部加入管状石墨烯材料有利于改善胶层整体的分布结构,使胶层树脂含量明显增加,提高了胶层内聚力,抗高低温,耐盐雾,抗静电,耐划伤等优秀表现。使用改性硫醇固化剂,大大的提升了涂层的内聚力,与石墨烯形成稳定的化学键合作用,石墨烯导热材料的粘结强度达到现有石墨烯的90%以上,相较于现有的石墨烯导热材料,导热性由原来的1W提升到10W以上,与现有的石墨烯导热材料相比,纳米管状石墨烯使用量大大减少,年假强度无明显变化。
附图说明
图1为本发明实施例中石墨烯高导热材料的示意图;
图2为现有石墨烯高导热材料的示意图。
具体实施方式
实施例一~三中一种石墨烯导热材料的原料组份(每组份=1g),如下:
上述一种石墨烯导热材料的制备步骤如下:
步骤一:向双行星搅拌机内加入纳米管状石墨烯、双酚A环氧树脂和双酚F环氧树脂,通过双行星搅拌机以3000r/s的转速,对双酚A环氧树脂和双酚F环氧树脂进行搅拌2h脱水,在搅拌过程中加温至90℃,并抽真空0.1MPa,以形成第一混合物;
步骤二:向第一混合物内加入改性硫醇固化剂,并通过双行星搅拌机以3000r/s的转速,对第一混合物和改性硫醇固化剂搅拌1h脱水,在搅拌过程中加温至90℃,并抽真空0.1MPa,以形成第二混合物;
步骤三:向第二混合物内加入疏水性气相二氧化硅,并通过双行星搅拌机以3000r/s的转速,对第二混合物和疏水性气相二氧化硅搅拌1h脱水,在搅拌过程中加温至90℃,并抽真空0.1MPa,以形成第三混合物;
步骤四:向第三混合物内加入催化剂,并通过双行星搅拌机以800r/s,对催化剂和第三混合物进行搅拌1h,并控温30℃;
步骤五:检测、出料、包装。
结合图1和图2可知,本方案中,在胶体内部加入管状石墨烯材料有利于改善胶层整体的分布结构,使胶层树脂含量明显增加,提高了胶层内聚力,抗高低温,耐盐雾,抗静电,耐划伤等优秀表现。使用改性硫醇固化剂,大大的提升了涂层的内聚力,与石墨烯形成稳定的化学键合作用,石墨烯导热材料的粘结强度达到现有石墨烯的90%以上,相较于现有的石墨烯导热材料,导热性由原来的1W提升到10W以上,与现有的石墨烯导热材料相比,纳米管状石墨烯使用量大大减少,年假强度无明显变化。
以上所述的仅是本发明的实施例,方案中公知的具体结构和/或特性等常识在此未作过多描述。应当指出,对于本领域的技术人员来说,在不脱离本发明结构的前提下,还可以作出若干变形和改进,这些也应该视为本发明的保护范围,这些都不会影响本发明实施的效果和专利的实用性。本申请要求的保护范围应当以其权利要求的内容为准,说明书中的具体实施方式等记载可以用于解释权利要求的内容。
Claims (10)
1.一种石墨烯高导热材料,其特征在于:包括如下质量份数的原料:10~16份纳米管状石墨烯、20~30份双酚A环氧树脂、30~40份双酚F环氧树脂、20~30份改性硫醇固化剂、3~6份疏水性气相二氧化硅、1~3份催化剂。
2.根据权利要求1所述的石墨烯高导热材料,其特征在于:包括如下质量份数的原料:10份纳米管状石墨烯、20份双酚A环氧树脂、30份双酚F环氧树脂、20份改性硫醇固化剂、3份疏水性气相二氧化硅、1份催化剂。
3.根据权利要求2所述的石墨烯高导热材料,其特征在于:包括如下质量份数的原料:16份纳米管状石墨烯、30份双酚A环氧树脂、40份双酚F环氧树脂、30份改性硫醇固化剂、6份疏水性气相二氧化硅、3份催化剂。
4.根据权利要求3所述的石墨烯高导热材料,其特征在于:制备步骤如下:
步骤一:向双行星搅拌机内加入纳米管状石墨烯、双酚A环氧树脂和双酚F环氧树脂,通过双行星搅拌机对双酚A环氧树脂和双酚F环氧树脂进行搅拌2h脱水,以形成第一混合物;
步骤二:向第一混合物内加入改性硫醇固化剂,并通过双行星搅拌机对第一混合物和改性硫醇固化剂搅拌1h脱水,以形成第二混合物;
步骤三:向第二混合物内加入疏水性气相二氧化硅,并通过双行星搅拌机对第二混合物和疏水性气相二氧化硅搅拌1h脱水,以形成第三混合物;
步骤四:向第三混合物内加入催化剂,并通过双行星搅拌机催化剂和第三混合物进行搅拌1h,并控温30℃;
步骤五:检测、出料、包装。
5.根据权利要求4所述的石墨烯高导热材料,其特征在于:步骤一、步骤二、步骤三和步骤四中,在搅拌过程中进行加温和抽真空。
6.根据权利要求5所述的石墨烯高导热材料,其特征在于:加温的温度为90℃。
7.根据权利要求6所述的石墨烯高导热材料,其特征在于:抽真空0.1MPa。
8.根据权利要求7所述的石墨烯高导热材料,其特征在于:步骤一、步骤二和步骤三中双行星搅拌机的转速为3000r/s。
9.根据权利要求8所述的石墨烯高导热材料,其特征在于:步骤四中双行星搅拌机的转速为800r/s。
10.根据权利要求9所述的石墨烯高导热材料,其特征在于:步骤三中形成第三混合物后,加温的温度降低至30℃。
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