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High-thermal-conductivity microcrystalline mica tape and preparation method thereof

A technology of microcrystalline mica and high thermal conductivity, which is applied in the field of agricultural irrigation, can solve the problems of mica tape's refractory effect and delamination, and achieve the effect of improving mechanical properties and fast heat dissipation

Inactive Publication Date: 2021-03-23
晟大科技(南通)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the thickness of the mica tape increases, it is easy to cause fracture, slippage, delamination and other phenomena, and the fire resistance of the mica tape will not be reflected

Method used

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  • High-thermal-conductivity microcrystalline mica tape and preparation method thereof
  • High-thermal-conductivity microcrystalline mica tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Graphene oxide pre-dispersion: prepare a toluene solution with a mass percent concentration of 3% graphene oxide, and conduct ultrasonic treatment for 30 minutes with an ultrasonic power of 500W. Add the hydroxy silicone oil toluene solution with a concentration of 50% by mass to the graphene oxide toluene solution, continue the ultrasonic treatment for 30 min, the ultrasonic power is 500W, and remove the toluene under reduced pressure to obtain a graphene oxide / hydroxy silicone oil mixture. The viscosity of hydroxy silicone oil is 500mPa·s.

[0027] 2. Mixing: Add graphene oxide / hydroxyl silicone oil mixture, 100 parts of silicone rubber, 50 parts of microcrystalline mica, 3 parts of 1,2-propylene glycol, and 1 part of microcrystalline wax into the kneader, and knead at 130°C for 30 minutes. Obtain the rubber compound. The average particle size of microcrystalline mica is 4 μm.

[0028] 3. Final mixing: Cool the mixed rubber for one section in the air for 2 hours,...

Embodiment 2

[0032] 1. Graphene oxide pre-dispersion: prepare a toluene solution with a mass percent concentration of 3% graphene oxide, and ultrasonically treat it for 20 minutes with an ultrasonic power of 700W. Add the hydroxy silicone oil toluene solution with a mass percent concentration of 50% to the graphene oxide toluene solution, continue ultrasonic treatment for 60 min, and the ultrasonic power is 1000 W, and remove the toluene under reduced pressure to obtain a graphene oxide / hydroxy silicone oil mixture. The viscosity of hydroxy silicone oil is 3000mPa·s.

[0033] 2. Mixing: Add graphene oxide / hydroxyl silicone oil mixture, 100 parts of silicone rubber, 20 parts of microcrystalline mica, 4 parts of 1,2-propylene glycol, and 2 parts of microcrystalline wax into the kneader, and knead at 120°C for 60 minutes. Obtain the rubber compound. The average particle size of microcrystalline mica is 2 μm.

[0034] 3. Final mixing: Put the mixed rubber in the air to cool for 2 hours, add ...

Embodiment 3

[0038] 1. Graphene oxide pre-dispersion: prepare a toluene solution with a mass percent concentration of 3% graphene oxide, and conduct ultrasonic treatment for 60 minutes with an ultrasonic power of 1000W. Add the hydroxy silicone oil toluene solution with a mass percentage concentration of 50% to the graphene oxide toluene solution, continue ultrasonic treatment for 20 min, and the ultrasonic power is 800W, and remove the toluene under reduced pressure to obtain a graphene oxide / hydroxy silicone oil mixture. The viscosity of hydroxy silicone oil is 2000mPa·s.

[0039] 2. Mixing: Add graphene oxide / hydroxyl silicone oil mixture, 100 parts of silicone rubber, 80 parts of microcrystalline mica, 6 parts of 1,2-propylene glycol, and 1 part of microcrystalline wax into the kneader, and knead at 150°C for 10 minutes. Obtain the rubber compound. The average particle size of microcrystalline mica is 6 μm.

[0040] 3. Final mixing: Cool the mixed rubber for one stage in the air for ...

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Abstract

The invention discloses a high-thermal-conductivity microcrystalline mica tape which is prepared from the following components in parts by weight: 100 parts of silicone rubber, 20-40 parts of microcrystalline mica, 3-6 parts of hydroxyl silicone oil, 5-15 parts of graphene oxide, 3-6 parts of a plasticizer, 0.3-0.6 part of an accelerant and 1-3 parts of a silane coupling agent. The preparation method has the following advantages: 1, graphene oxide is pre-dispersed in hydroxyl silicone oil, so uniform dispersion of graphene oxide in silicone rubber is guaranteed; 2, the graphene oxide is added,so that the mechanical property of the mica tape can be improved; 3, when the organosilicone microcrystalline mica tape burns at 1000 DEG C, the organosilicone microcrystalline mica tape is kept uninterruptible for 120 minutes; 4, the heat conductivity coefficient of the organic silicon microcrystalline mica tape is higher than 0.4, and the heat dissipation is fast; and 5, uninterrupted power supply at 1000 DEG C for 120 minutes can be realized only by single-layer wrapping on the surface of equipment.

Description

technical field [0001] The invention relates to the technical field of agricultural irrigation, in particular to a preparation method and a treatment method of a high thermal conductivity microcrystalline mica tape. Background technique [0002] As electrical appliances use higher and higher power, wires and cables will generate a lot of heat during use. Especially for aerospace, high-speed rail, aircraft and other application fields, wires and cables are not only required to have a high fire resistance rating, but also require fast heat dissipation, reduce the incidence of accidents, and improve the safety of electrical equipment. In addition, when the traditional mica tape is used, it is necessary to wrap multiple layers of mica tape on the surface of the equipment to ensure insulation and high temperature resistance (≥850°C). As the thickness of the mica tape increases, it is easy to cause fracture, slippage, delamination and other phenomena, and the fire resistance of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L91/06C08K13/02C08K3/34C08K3/04C08K5/053B32B17/02B32B17/06B32B25/02B32B25/20B32B37/06B32B37/10B32B38/00
CPCB32B5/02B32B25/02B32B25/10B32B25/20B32B37/06B32B37/10B32B38/00B32B38/0004B32B2038/0076B32B2262/101B32B2307/302C08K2201/011C08L83/04C08L2203/202C08L2205/025C08L91/06C08K13/02C08K3/34C08K3/042C08K5/053
Inventor 卢儒朱凉伟刘广林黄艺泉
Owner 晟大科技(南通)有限公司