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Graphene bottom sealing adhesive and preparation method thereof

A graphene and graphene powder technology, applied in the directions of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of airtightness, impermeability, impermeability, etc., and achieve good hydrophobicity, low cost, The effect of good mechanical properties

Pending Publication Date: 2022-02-01
NANTONG QIANGSHENG PHOTOVOLATIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Graphene has excellent mechanical, optical and electrical properties, and its structure is very stable. So far, researchers have not found the absence of carbon atoms in graphene. The links between carbon atoms are very flexible, harder than diamonds, and stronger than the world's The best steel is 100 times higher. If you use graphene to make a packaging bag, it will be able to bear about two tons of items, almost completely transparent, but extremely dense, impermeable, airtight, even the smallest atomic size Helium cannot pass through

Method used

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  • Graphene bottom sealing adhesive and preparation method thereof

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preparation example Construction

[0020] The preparation method of the graphene back seal adhesive provided by the present invention comprises: Step 1, weighing the raw materials in proportion; the raw materials include octamethylcyclotetrasiloxane, tetramethyltetravinylcyclotetrasiloxane, tetramethylcyclotetrasiloxane, Divinyl disiloxane, tetramethylammonium hydroxide, hydrogen-containing silicone oil, MQ resin, graphene powder, additives; step 2, preparation of component A: octamethylcyclotetrasiloxane, tetramethyl Add tetravinylcyclotetrasiloxane and tetramethyldivinyldisiloxane into the reaction furnace, heat up, vacuumize and react, then adjust to normal pressure, add tetramethylammonium hydroxide, and continue to heat up and react; Step 3, prepare component B: mix and stir part of component A with hydrogen-containing silicone oil, graphene powder, additives, and MQ resin, and vacuumize to obtain component B; step 4, mix the remaining component A and component B by Proportional fit, used as back cover glu...

Embodiment 1

[0034] A preparation method of graphene back sealant, which comprises:

[0035] Step 1, weighing the raw materials in proportion; the raw materials include octamethylcyclotetrasiloxane, tetramethyltetravinylcyclotetrasiloxane, tetramethyldivinyldisiloxane, tetramethylammonium hydroxide , Hydrogen silicone oil, MQ resin, graphene powder, additives.

[0036] Preferably, the raw material contains 90% of octamethylcyclotetrasiloxane, 1% of tetramethyltetravinylcyclotetrasiloxane, 0.1% of tetramethyldivinyldisiloxane, and tetramethylcyclotetrasiloxane by mass percentage. Ammonium hydroxide 0.1%, hydrogen silicone oil 2.7%, MQ resin 5%, graphene powder 1%, additive 0.1%.

[0037] Graphene powder is prepared by mechanical exfoliation.

[0038] Additives include polyvinyl alcohol.

[0039] Step 2, preparation of component A: Add octamethylcyclotetrasiloxane, tetramethyltetravinylcyclotetrasiloxane, and tetramethyldivinyldisiloxane to the reaction furnace, and raise the temperature ...

Embodiment 2

[0044] A preparation method of graphene back sealant, which comprises:

[0045] Step 1, weighing the raw materials in proportion; the raw materials include octamethylcyclotetrasiloxane, tetramethyltetravinylcyclotetrasiloxane, tetramethyldivinyldisiloxane, tetramethylammonium hydroxide , Hydrogen silicone oil, MQ resin, graphene powder, additives.

[0046] Preferably, the raw material contains 72% of octamethylcyclotetrasiloxane, 2% of tetramethyltetravinylcyclotetrasiloxane, 10% of tetramethyldivinyldisiloxane, tetramethyl Ammonium hydroxide 1%, hydrogen silicone oil 2%, MQ resin 10%, graphene powder 2%, additive 1%.

[0047] Graphene powder is prepared by liquid phase exfoliation.

[0048] Additives include sodium lignosulfonate.

[0049] Step 2, preparation of component A: Add octamethylcyclotetrasiloxane, tetramethyltetravinylcyclotetrasiloxane, and tetramethyldivinyldisiloxane to the reaction furnace, and raise the temperature to 70-90°C, vacuum reaction for 1h, then ad...

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Abstract

The invention discloses a graphene bottom sealing adhesive and a preparation method thereof. The method comprises the following steps: step 1, weighing of raw materials in proportion; step 2, preparation of a component A: adding octamethylcyclotetrasiloxane, tetramethyltetravinyl cyclotetrasiloxane and tetramethyldivinyl disiloxane into a reaction furnace, carrying out heating, performing vacuumizing for reaction, then conducting adjusting to normal pressure, adding tetramethylammonium hydroxide, and continuing heating for reaction; step 3, preparation of a component B: mixing and stirring a part of the component A with hydrogen-containing silicone oil, graphene powder, an additive and MQ resin, and carrying out vacuumizing to obtain the component B; and step 4, matching the remaining component A with the remaining component B according to a ratio so as to obtain obtain a mixture serving as the bottom sealing adhesive. The invention also provides the graphene bottom sealing adhesive prepared by using the method. The bottom sealing adhesive prepared by the invention can be rapidly cured, has better mechanical properties and aging resistance, also has better hydrophobicity, and is suitable for photovoltaic bottom sealing.

Description

technical field [0001] The invention relates to a back-sealing glue for solar cell components and a preparation method thereof, in particular to a graphene back-sealing glue and a preparation method thereof. Background technique [0002] A solar cell is a device that directly converts light energy into electrical energy through the photoelectric effect or photochemical effect. As long as it is illuminated by light, it can output voltage and current instantly. In physics, it is called solar photovoltaic, or photovoltaic for short. [0003] Solar panels are an important device for converting energy, and the design service life is generally required to be more than 25 years. To meet this requirement, it is necessary to strictly control the quality of each component of the panel. As the armor of the battery sheet, the battery backplane needs to have properties such as insulation, weather resistance, and water resistance. A single material cannot meet such comprehensive perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/07C09J183/05C09J183/04C09J11/04
CPCC09J183/04C09J11/04C08L2203/206C08L83/04C08K3/042
Inventor 沙嫣沙晓林马立国
Owner NANTONG QIANGSHENG PHOTOVOLATIC TECH
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