Preparation method of group-regulated high-density graphene heat-conducting film and obtained product
A high-density, graphene technology, applied in the field of graphene, can solve the problems of poor film performance, low density of low-solid slurry, high viscosity of high-solid slurry, etc., to achieve uniform density, large coating density, Excellent surface condition and homogeneous effect
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[0033]Example 1
[0034]The preparation method of high-density graphene heat film regulated by the group, including the following steps:
[0035]0.1% hydrochloric acid was added to 10 g of deionized water, and stirring was stirred using a high speed mixer to obtain a first slurry;
[0036]The oxidized graphene filter cake was referred to in 5% first slurry, and the granulated treatment was carried out using a blade pulverizer to be treated into 1 mm particles, then in the above-described first slurry, stirred at 300 rpm for 15 min, and then stirred at 1000 rpm 30 min is stirred at high speed to obtain a hydrophobic high-containing slurry;
[0037]Ultrasonic homogenizing machine is used to use ultrasonic homogeneous machine using ultrasonic homogeneous machine, with a frequency of 20 kHz, a sound intensity of 1 W / cm.2, Obtain a uniformly dispersed second slurry;
[0038]The second slurry was dispersed using a dual planet mixer, and an ammonia water having a mass of 0.1% of the slurry was added th...
Example Embodiment
[0043]Example 2
[0044]The preparation method of high-density graphene heat film regulated by the group, including the following steps:
[0045]10% of hydrochloric acid was added to 10 kg deionized water, and stirring was stirred using a high speed mixer to obtain a first slurry;
[0046]The oxidized graphene filter cake was referred to as 5% first slurry, and the granulated treatment was carried out using a blade pulverizer to be treated into 1 cm particles, and then it was added to the first slurry, and the mixture was stirred at 600 rpm for 5 min, and then stirred at 1500 rpm 15 min is stirred at high speed to obtain a hydrophobic high solid slurry;
[0047]Ultrasonic homogeneous treatment is used for the obtained hydrophobic high-containing slurry to use ultrasonic homogeneous machine, with a frequency of 300 kHz, a sound strength of 20W / cm.2, Obtain a uniformly dispersed second slurry;
[0048]The second slurry was dispersed using a dual planet mixer, and a pulp mass was added thereto, and...
Example Embodiment
[0053]Example 3
[0054]The preparation method of high-density graphene heat film regulated by the group, including the following steps:
[0055]3% hydrochloric acid was added to 1 kg deionized water, and stirring was stirred using a high-speed mixer to obtain a first slurry;
[0056]The oxidized graphene filter cake was referred to as 3% first slurry solid content, and the granulened treatment was carried out using a blade pulverizer to form a 4 mm particles, and then the first slurry was added, stirred at 400 rpm for 8 min, and then stirred at 1200 rpm 20min is stirred at high speed to obtain a hydrophobic high-containing slurry;
[0057]Ultrasonic homogenizing machine is used to use ultrasonic homogeneous machine using ultrasonic homogeneous machine, frequency is 100 kHz, and the sound is 10W / cm2, Obtain a uniformly dispersed second slurry;
[0058]The second slurry was dispersed using a dual planet mixer, and an ammonia water of the slurry mass was added thereto, and the viscosity of the slu...
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