Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of high-performance insulating grease and preparation method thereof

A grease, high-performance technology, applied in the field of high-performance insulating grease and its preparation, can solve the problems of poor ink adhesion and stability, short shelf life, easy structuring, etc. Compatibility effect

Active Publication Date: 2021-11-09
东莞市港田高分子材料有限公司
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lubricating grease produced by this process has disadvantages such as easy oil separation, easy structure or return to thinning after long-term storage
[0004] In view of the above problems, the patent CN101240211A provides a preparation method of nano-silica grease, the method is mainly to add a modifying agent to silicone oil and nano-silica to modify, but the grease storage period is not more than 6 months, stencil oil separation (100℃×30h) is 0.68wt%, the shelf life is still short, ink adhesion and stability are poor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of high-performance insulating grease and preparation method thereof
  • A kind of high-performance insulating grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Hydrophobic ultrafine silica pre-preparation: 100 parts with a specific surface area of ​​100m 2 / g, precipitated silica with a particle size of 30nm was put into the reactor, started to stir, then added 10 parts of hexamethyldisilazane and 2 parts of purified water by spraying, and discharged after airtight treatment at room temperature for 4 hours. Seal it with a PE bag and store it at room temperature for 30 days.

[0043] Preparation of high-performance insulating grease: put 60 parts of simethicone oil with a viscosity of 500CS into the kneader, and then put in 36 parts of hydrophobic superfine silica in batches, stir to form a mass, and continue to stir at a material temperature of 90°C 2h, stirring speed 50r / min, vacuum stirring at material temperature 190°C for 2h, vacuum degree: 680mmHg stirring speed 35r / min, lowering material temperature to 130°C, adding 4 parts of hydroxyl-terminated silicone oil with a viscosity of 25CS, and continuing to decompress Stir f...

Embodiment 2

[0045] Hydrophobic ultrafine silica pre-preparation: 100 parts with a specific surface area of ​​400m 2 / g, fumed silica with a particle size of 3nm was put into the reaction kettle, started stirring, then added 45 parts of hexamethyldisilazane and 15 parts of purified water by spraying, stirred at 95°C for 4h, and depressurized at 180°C Stir for 4 hours, then lower the temperature of the material to below 120°C, discharge the material after the vacuum is eliminated with nitrogen, and obtain a hydrophobic ultrafine silica with a methanol value of 48.

[0046] Preparation of high-performance insulating grease: put 74 parts of simethicone oil with a viscosity of 15000CS into the kneader, and then put in 24 parts of hydrophobic superfine silica in batches, stir to form a mass, and continue to stir at a material temperature of 80°C 4h, stirring speed 35r / min, vacuum stirring at material temperature 180°C for 4h, vacuum degree: 570mmHg, stirring speed 50r / min, lowering material tem...

Embodiment 3

[0048] Hydrophobic ultrafine silica pre-preparation: 100 parts with a specific surface area of ​​300m 2 / g, fumed silica with a particle size of 10nm was put into the reactor, started to stir, then added 25 parts of hexamethyldisilazane and 7 parts of purified water by spraying, stirred at 70°C for 2h, and depressurized at 170°C Stir for 2 hours, then lower the temperature of the material to below 120° C., discharge the material after the vacuum is eliminated with nitrogen, and obtain hydrophobic ultrafine silica with a methanol value of 45.

[0049] Preparation of high-performance insulating grease: Put 68 parts of simethicone oil with a viscosity of 2000CS into the kneader, and then put in 30 parts of hydrophobic superfine silica in batches, stir to form a mass, and continue to stir at a material temperature of 60°C 3h, stirring speed 20r / min, vacuum stirring at material temperature 160°C for 3h, vacuum degree: 720mmHg, stirring speed 20r / min, lowering material temperature to...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
particle diameteraaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-performance insulating lubricating grease and a preparation method thereof. The high-performance insulating grease is composed of the following raw materials in parts by weight: 60-74 parts of silicone oil; 24-36 parts of hydrophobic ultrafine silicon dioxide; 0.5-1 part of structure control agent; 1-3 parts of thixotropic agent. Its preparation method is to mix silicone oil and hydrophobic ultrafine silica in a kneader at low temperature, then process it in high temperature vacuum, then add structure control agent and thixotropic agent at lower temperature, and then grind it several times with a three-roller mill. The high performance insulating grease. The high-performance insulating lubricating grease prepared by the invention has a storage period of more than 18 months, does not return thinning, does not emit oil, does not become structured, and has excellent colloid stability and shear stability.

Description

technical field [0001] The invention relates to the technical field of organic silicon, in particular to a high-performance insulating grease and a preparation method thereof. Background technique [0002] Insulating grease has excellent insulation, high and low temperature resistance and water resistance due to the addition of silicon dioxide, so it has important applications in plastic parts, switches, electrical insulation, etc. [0003] The current process of preparing insulating grease is to simply mix silicone oil and silicon dioxide mechanically, and then grind it through a three-roll mill. However, the lubricating grease produced by this process has disadvantages such as easy oil separation, easy structure or return to thinning after long-term storage. [0004] In view of the above problems, the patent CN101240211A provides a preparation method of nano-silica grease, the method is mainly to add a modifying agent to silicone oil and nano-silica for modification, but ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10M177/00C10N50/10C10N30/06
Inventor 邓元福黄原志
Owner 东莞市港田高分子材料有限公司