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Protective sealing material and preparation and construction method thereof

A technology of sealing material and rubber material, applied in the field of protective sealing material and its preparation and construction, can solve the problems of water resistance, easy corrosion of exposed nuts, troublesome replacement, etc., and achieve the effects of short process, shortened preparation period and simple construction

Pending Publication Date: 2021-06-22
HUNAN AEROSPACE SANFENG SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a protective sealing material and its preparation and construction method, aiming to provide a weather-resistant protective material with a new structure, excellent performance and simple operation for the problems of easy corrosion of exposed nuts, troublesome replacement and water resistance. The material is stable in appearance, easy to operate, and has great plasticity. After moisture curing, it has excellent insulation, weather resistance, acid and alkali resistance, and waterproof performance. The formula composition is especially suitable for the weather resistance protection of nuts; the construction method is easy to operate , especially suitable for exposed nut protection

Method used

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  • Protective sealing material and preparation and construction method thereof
  • Protective sealing material and preparation and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Pretreatment of raw materials, 100 parts of α, ω-terminated hydroxyl polydimethylsiloxane (kinetic viscosity η = 1000cp), 10 parts of dimethyl silicone oil, 3 parts of hydrophobic fumed silica TS-720, 10 parts of hollow Hollow glass microspheres and 0.2 parts of colored carbon black were placed in an oven at 120°C to dry for 8 hours, and set aside.

[0049] The rubber is kneaded and mixed, and the pretreated α, ω-terminated hydroxyl polydimethylsiloxane and dimethyl silicone oil are put into the cavity of the vacuum kneader at one time, and the blade speed of the kneader is adjusted, and heated to 120°C, after polydimethylsiloxane and dimethyl silicone oil are mixed evenly, add fumed white carbon black, hollow glass microspheres, and colored carbon black powder raw materials in 3 times, and make sure that each time the powder is added The materials in the cavity have been kneaded into a paste. After the powder is added, start the vacuum pump, maintain the vacuum at -0....

Embodiment 2

[0053] Pretreatment of raw materials, 90 parts of α, ω-terminated hydroxyl polydimethylsiloxane (kinetic viscosity η = 1000cp), 15 parts of dimethyl silicone oil, 4 parts of hydrophobic fumed silica TS-720, 15 parts of hollow The glass microspheres and 0.4 parts of colored carbon black were placed in an oven at 120°C for 10 hours and dried for later use.

[0054] The rubber is kneaded and mixed, and the pretreated α, ω-terminated hydroxyl polydimethylsiloxane and dimethyl silicone oil are put into the cavity of the vacuum kneader at one time, and the blade speed of the kneader is adjusted, and heated to 110°C, after polydimethylsiloxane and dimethyl silicone oil are mixed evenly, add fumed white carbon black, hollow hollow glass microspheres, and colored carbon black powder in 4 times. The materials in the material cavity have been kneaded into a paste. After the powder is added, start the vacuum pump, maintain the vacuum at -0.1Mpa, and continue kneading and mixing for 1.5h....

Embodiment 3

[0057] Pretreatment of raw materials, 80 parts of α, ω-terminated hydroxyl polydimethylsiloxane (kinetic viscosity η = 1000cp), 20 parts of dimethyl silicone oil, 5 parts of hydrophobic fumed silica TS-720, 20 parts of hollow The glass microspheres and 0.6 parts of colored carbon black were placed in an oven at 120°C for 12 hours and dried for later use.

[0058] The rubber is kneaded and mixed, and the pretreated α, ω-terminated hydroxyl polydimethylsiloxane and dimethyl silicone oil are put into the cavity of the vacuum kneader at one time, and the blade speed of the kneader is adjusted, and heated to 100°C, after polydimethylsiloxane and dimethyl silicone oil are mixed evenly, add fumed white carbon black, hollow glass microspheres, and colored carbon black powder in 5 times. The materials in the cavity have been kneaded into a paste. After the powder is added, start the vacuum pump, maintain the vacuum at -0.1Mpa, and continue kneading and mixing for 1 hour. Then the rub...

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Abstract

The invention disclsoes a protective sealing material and a preparation and construction method thereof. The protective sealing material is prepared from the following components in parts by weight: 80 to 120 parts of alpha, omega-hydroxyl-terminated polydimethylsiloxane, 5 to 20 parts of a plasticizer, 1 to 5 parts of reinforcing filler, 10 to 20 parts of incremental filler, 5 to 15 parts of a thixotropic agent, 4 to 8 parts of a cross-linking agent, 0.2 to 1 part of an organic titanium catalyst, 0.1 to 1 part of a hydroxyl scavenger and 0.5 to 2 parts of a coupling agent. The weather-resistant nut protection material which is novel in structural design, simple and convenient to construct and operate, more than one year in shelf life and outstanding in comprehensive performance is obtained, the curing speed and the curing initial strength are greatly improved, and the weather resistance, the heat resistance and the acid and alkali resistance after curing are good; the material is wide in adaptation, can be customized to form a box according to the size of the nut, and can be attached to any position.

Description

technical field [0001] The invention relates to the field of protective sealing materials, in particular to a protective sealing material and its preparation and construction methods. Background technique [0002] Nut is an element often used in the life and production process. In some specific facilities (such as ships, aircraft, etc.), because it is an important component of connection, and it is more troublesome to replace, its usual maintenance and protection are very important. A very important job. For the protection of exposed nuts at home and abroad, most of them prefer to use nut protection kits. At present, there are some related patents trying to solve this kind of problems. The most common ones are to install nut protective components, but the installation of protective components is troublesome and increases the load and volume of nuts. Patent CN102840215B invented a new type of bolt and nut Protective structure, which includes a threaded inner hoop on the nut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K7/26C08K7/28C08K3/04
CPCC08L83/04C08L2205/025C08L2201/08C08K7/26C08K7/28C08K3/04
Inventor 邓国威张刚崔武林张文波阳区
Owner HUNAN AEROSPACE SANFENG SCI & TECH CO LTD
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