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Antifreeze water-based graphene electric heating slurry with freezing point below -20°C and preparation method

A water-based graphene and graphene technology, applied in the direction of ink, climate sustainability, sustainable manufacturing/processing, etc., can solve problems such as air quality and environmental impact, immature preparation method, regional climate impact, etc., to achieve prolonged drying time, solve regional climate impacts, and reduce energy consumption

Active Publication Date: 2022-01-28
GAOBEIDIAN LONGTAI FENGBO GRAPHENE PROCESSING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, the air pollution has been serious, especially the smog weather in the winter heating period in the north has made the task of environmental protection more and more serious. At present, most of the electric heating products market is still using solvent-based electric heating ink (carbon slurry). The biggest disadvantage of solvent-based electric heating ink Yes: it will volatilize a large amount of organic compounds during the drying process, which will have a great impact on the indoor and outdoor air quality and environment. Long-term contact of workers will cause dry skin, penetrate into the skin and blood, and endanger human blood cells and blood cells along with the blood. Hematopoietic function, inhaled into the human body will cause certain damage to the liver and kidney, and workers who work in this environment for a long time will also cause great damage to the nervous system
[0003] However, a small number of water-based electric heating inks, coatings, and coating agents also have immature preparation methods and are seriously affected by regional climates. They are prone to freezing in cold regions, which eventually leads to problems such as use effects and product life.

Method used

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  • Antifreeze water-based graphene electric heating slurry with freezing point below -20°C and preparation method

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preparation example Construction

[0036] A kind of preparation method of above-mentioned antifreeze type water-based graphene electric heating slurry, comprises the following steps:

[0037] S1 Weighing: Weigh the required raw materials one by one according to the above raw material formula;

[0038] S2 pre-mixing: first add the weighed liquid materials (including propylene glycol) into the reactor in turn, disperse for 5 to 10 minutes, and stir evenly; then use the vacuum pump to vacuum feed the weighed graphene powder and carbon black powder After all the powder is added, the disperser is kept at 2000 rpm, and the dispersion is stopped for one hour. After the pre-mixing is completed, the dispersing plate of the disperser is soaked in clean water for later use;

[0039] S3 Grinding: Move the premixed material from the reaction kettle to the grinder to start grinding. The quality inspector will conduct particle size testing. After passing the test, the grinding is completed and becomes a slurry.

[0040] S4 C...

Embodiment 1

[0051] Weigh the raw materials one by one according to the following mass percentages: 28% deionized water, 20% 1-10 layer graphene, 7% carbon black, 24% BASF 624 acrylic emulsion (glass transition temperature -30°C), 10% propylene glycol , Antifoaming agent 322 3%, dispersant x-100 3%, BASF acrylic dispersion 96 5%.

[0052] First add the weighed deionized water and propylene glycol into the movable reaction kettle in turn, disperse for 10 minutes, stir evenly, and the stirring speed is 500 rpm; then add the weighed graphene powder and carbon black powder The method of vacuum feeding by vacuum pump is divided into 6 times and added to the movable reactor. Each time the material is dispersed for 20-30 minutes, the speed is 1000-2000 rpm. The increase of the amount of graphene and carbon black adopts the principle of gradual increase and gradual extension; after all the powder is added, the disperser maintains 2000 rpm, and the dispersion stops for one hour. Soak for use;

[...

Embodiment 2

[0057] Weigh the raw materials one by one according to the following mass percentages: 32% of deionized water, 5% of 1-10 layers of graphene with a particle size of 1-8 microns, 10% of carbon black, polyurethane emulsion (glass transition temperature-25°C) 31%, propylene glycol 13%, defoamer 322 4%, dispersant 4585 5%.

[0058] First add the weighed deionized water and propylene glycol into the movable reaction kettle in turn, disperse for 5 minutes, stir evenly, and the stirring speed is 800 rpm; then add the weighed graphene powder and carbon black powder The method of vacuum feeding by vacuum pump is divided into 8 times and added to the movable reactor. Each time the material is dispersed for 20-30 minutes, the speed is 1000-2000 rpm. The increase of the amount of graphene and carbon black adopts the principle of gradual increase and gradual extension; after all the powder is added, the disperser maintains 2000 rpm, and the dispersion stops for one hour. Soak for use;

...

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Abstract

The present invention relates to the technical field of electrothermal inks, in particular to an antifreeze-type water-based graphene electric heating paste with a freezing point below -20°C and a preparation method thereof, except that it has the advantages of ordinary water-based electric heating paste (water ink) and the shortcomings of outdoor air quality and environment, and reduce the damage to the liver, kidney and nervous system caused by workers during use) In addition: the preparation method is more scientific and reasonable, the regional climate restrictions are lower, and the energy use efficiency is improved; including the following qualities Raw materials in percentage content: 28-40% of water, 10-25% of graphene, 5-15% of carbon black, 20-40% of water-based emulsion, 10-15% of propylene glycol and 6-12% of water-based additives; its preparation method Including weighing first, then dispersing through liquid materials, and then using a vacuum pump to vacuum and premix powder materials, then adding emulsion and water-based additives for compounding, filling, labeling and warehousing to obtain finished products after passing the inspection.

Description

technical field [0001] The invention relates to the technical field of electrothermal inks, in particular to an antifreeze water-based graphene electrothermal paste with a freezing point below -20°C and a preparation method thereof. Background technique [0002] In recent years, the air pollution has been serious, especially the smog weather in the winter heating period in the north has made the task of environmental protection more and more serious. At present, most of the electric heating products market is still using solvent-based electric heating ink (carbon paste). The biggest disadvantage of solvent-based electric heating ink Yes: it will volatilize a large amount of organic compounds during the drying process, which will have a great impact on the indoor and outdoor air quality and environment. Long-term contact of workers will cause dry skin, penetrate into the skin and blood, and endanger human blood cells and blood cells along with the blood. Hematopoietic functio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/03C09D11/033
CPCC09D11/03C09D11/033Y02P20/10
Inventor 时文华
Owner GAOBEIDIAN LONGTAI FENGBO GRAPHENE PROCESSING CO LTD