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Environment-friendly silicone grease for fixing small-size nanocrystalline magnetic core and preparation method

An environmentally friendly, nanocrystalline technology, applied in the direction of adhesive additives, non-polymer adhesive additives, adhesives, etc., can solve the problems of attenuation, fixed small-sized nanocrystalline magnetic cores, etc., and solve the problem of serious performance attenuation , Overcoming low production efficiency and good compatibility

Pending Publication Date: 2020-10-30
杭州先创高新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned shortcoming of the prior art, the purpose of the present invention is to provide a kind of environment-friendly silicone grease for fixing the small-sized nanocrystalline magnetic core, in order to solve the weak and performance problems of fixing the small-sized nanocrystalline magnetic core in the prior art. Attenuation serious problem, at the same time, the present invention will also provide a kind of preparation method of the environment-friendly silicone grease that is used to fix the small-size nanocrystalline magnetic core; The environment-friendly silicone grease provided can guarantee that the performance of the small-size nanocrystalline magnetic Under the premise that there will be no shaking phenomenon for 20 years

Method used

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  • Environment-friendly silicone grease for fixing small-size nanocrystalline magnetic core and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add 100 parts of methyl-terminated polydimethylsiloxane (25°C, 80000mPa·s) into the kneader, and add 40 parts of hydrophilic fumed silica (BET=300m 2 / g) and 12 parts of trimethylethoxysilane, kneaded at normal pressure for 4 hours; heated to 190°C, kneaded at -0.095MPa for 4 hours, then ground twice by three-roll mill; transferred the material to a planetary mixer Add 1 part of trimethylsilanol, and mix under vacuum at -0.095Mpa for 30 minutes to prepare a silicone grease sample.

Embodiment 2

[0036] Add 100 parts of methyl-terminated polydimethylsiloxane (25°C, 80000mPa·s) into the kneader, and add 60 parts of hydrophobic fumed silica (BET=300m 2 / g) and 8 parts of trimethylmethoxy silicone oil, kneading at normal pressure for 4 hours; heating up to 190°C, kneading at -0.095MPa for 4 hours, then grinding twice with a three-roll mill; transferring the material to a planetary mixer Add 1 part of hydroxyl silicone oil (25°C, 30mPa·s), and mix under vacuum at -0.095Mpa for 30 minutes to prepare a silicone grease sample.

Embodiment 3

[0038] Add 100 parts of vinyl-terminated polydimethylsiloxane (25°C, 100000mPa·s) into the kneader, and add 30 parts of hydrophilic fumed silica (BET=400m 2 / g) and 10 parts of dimethyldimethoxysilane, kneaded at normal pressure for 2 hours; heated up to 180°C, kneaded at -0.095MPa for 6 hours, then ground twice with a three-roller mill; transferred the material to planetary mixing In the machine, add 1 part of trimethylsilanol, and mix under vacuum at -0.095Mpa for 45 minutes to prepare a silicone grease sample.

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Abstract

The invention relates to the technical field of organic silicon materials, in particular to environment-friendly silicone grease for fixing a small-size nanocrystalline magnetic core and a preparationmethod thereof. The environment-friendly silicone grease comprises the following components: 100 parts of polyorganosiloxane, 30-60 parts of tackifying filler, 8-18 parts of a modification treatmentagent and 0.5-1.5 parts of a structure stabilizer. The preparation method comprises the following steps: kneading the polyorganosiloxane, the tackifying filler and the modification treatment agent atnormal pressure, carrying out vacuum heat treatment, cooling the material, grinding, adding the structure stabilizer, and carrying out vacuum mixing. According to the environment-friendly silicone grease, the problems that in the prior art, a small-size nanocrystalline magnetic core is not firmly fixed, and performance attenuation is serious are solved, and it can be guaranteed that the small-sizenanocrystalline magnetic core does not shake for 20 years on the premise that the performance is not damaged through the provided environment-friendly silicone grease.

Description

technical field [0001] The invention relates to the technical field of organic silicon materials, in particular to an environment-friendly silicone grease for fixing small-sized nanocrystalline magnetic cores and a preparation method thereof. Background technique [0002] The microstructure of nanocrystalline soft magnetic alloy materials is disordered, very brittle and easily broken. The production process for preparing the magnetic core is as follows: the strip is wound into a magnetic core, solidified and shaped, glue dispensed, loaded into a protective shell, and enameled wire wound. Curing and shaping is to bond each circle of the magnetic core into a whole to prevent brittle cracks and damage performance during vibration; dispensing is to fix the magnetic core and the protective shell to prevent the magnetic core from shaking in the protective shell. Once shaken, it will become scrap. The size of the nanocrystalline magnetic core will vary according to the actual app...

Claims

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Application Information

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IPC IPC(8): C09J183/04C09J11/04C09J11/06
CPCC09J183/04C09J11/04C09J11/06C08K7/26C08K5/5419C08K5/5455
Inventor 徐晓明
Owner 杭州先创高新材料有限公司
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