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High-damp silica gel cement, composite material containing high-damp silica gel cement and preparation methods and application thereof

A composite material and high damping technology, applied in the field of silicone rubber materials, can solve the problems of unsatisfactory, unsatisfactory material durability and practicability, and the maximum loss factor is not too high, and achieves the effect of simple processing method and convenient industrial production.

Active Publication Date: 2017-08-08
DONGGUAN DIKELAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the maximum loss factor of the modified silicon system materials reported so far is not too high, and they have no self-healing properties. Instruments and other fields of demand
[0004] In the prior art, for example, the Chinese patent with publication number CN103554924A discloses an addition-type silicone damping material and its preparation method, which is obtained by addition of vinyl silicone oil and hydrogen-containing silicone oil through the commonly used preparation method of addition-type silicone rubber. The maximum loss factor of damping silicone rubber is about 0.58, and it has no self-healing performance, which cannot meet the needs of some aerospace, precision instruments and other fields
[0005] The Chinese patent with the publication number CN101962480A discloses a high-damping material based on low-phenyl silicone rubber, which is made of a silicone rubber damping material after high-temperature vulcanization of low-phenyl silicone rubber and peroxide vulcanizing agent, and its maximum loss factor is It is around 0.33, and has no self-healing performance, so it cannot meet the needs of some aerospace, precision instruments and other fields
[0006] The Chinese patent with the publication number CN102002238A discloses a high-damping material based on high-phenyl silicone rubber, which is made of a silicone rubber damping material after high-temperature vulcanization of high-phenyl silicone rubber and peroxide vulcanizing agent, and its maximum loss factor It is around 0.5, and has no self-healing performance, and it also cannot meet the needs of some aerospace, precision instruments and other fields

Method used

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  • High-damp silica gel cement, composite material containing high-damp silica gel cement and preparation methods and application thereof

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Experimental program
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Effect test

Embodiment 1

[0045] 1) First put 100 parts of phenyl hydroxy silicone oil with 15% phenyl content and 15 parts of boric acid in a kneader at a temperature of 180°C to prepare silica gel clay containing boron hydroxyl and phenyl groups, and then add 3 parts Hybridization of arachidic acid to prepare silica gel with low cross-linking degree;

[0046] 2) Mix 100 parts of low-crosslinking silica gel clay, 50 parts of lead zirconate titanate powder, and 15 parts of acetylene carbon black powder through an open mill to prepare high-damping silica gel clay.

[0047] The maximum loss factor of the high damping silica gel is 1.43, and the temperature range where the loss factor is greater than 0.3 reaches 88°C.

Embodiment 2

[0049] 1) First put 100 parts of phenyl hydroxy silicone oil with a phenyl content of 25% and 15 parts of boric acid in a kneader and react at a temperature of 180°C to prepare silica gel containing boron hydroxyl and phenyl groups, and then add 3 parts Hybridization of arachidic acid to prepare silica gel with low cross-linking degree;

[0050] 2) Mix 100 parts of low-crosslinking silica gel clay, 50 parts of lead zirconate titanate powder, and 15 parts of acetylene carbon black powder through an open mill to prepare high-damping silica gel clay.

[0051] The maximum loss factor of the high damping silica gel is 1.56, and the temperature range where the loss factor is greater than 0.3 reaches 92°C.

Embodiment 3

[0053] 1) First put 100 parts of phenyl hydroxy silicone oil with 35% phenyl content and 15 parts of boric acid in a kneader at a temperature of 180°C to prepare silica gel clay containing boron hydroxyl and phenyl groups, and then add 3 parts Hybridization of arachidic acid to prepare silica gel with low cross-linking degree;

[0054] 2) Mix 100 parts of low-crosslinking silica gel clay, 50 parts of lead zirconate titanate powder, and 15 parts of acetylene carbon black powder through an open mill to prepare high-damping silica gel clay.

[0055] The loss factor-temperature curve of high damping silica gel is as follows figure 1 As shown, the maximum loss factor is 1.61, and the temperature range where the loss factor is greater than 0.3 reaches 98°C.

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Abstract

The invention discloses high-damp silica gel cement, a composite material containing the high-damp silica gel cement and preparation methods and application thereof. The high-damp silica gel cement is prepared from the following ingredients in parts by weight: 100 parts of low-crosslinking degree silica gel cement, 30 to 80 parts of piezoelectric powder and 0.1 to 25 parts of conductive powder. The low-crosslinking degree silica gel cement is prepared from phenyl hydroxyl silicone oil, boric acid and organic carboxylic acid which are hybridized according to weight ratio of 100 : (0.1 to 15) : 3. By means of introducing boric hydroxyl and phenyl into a silicone rubber molecule chain and utilizing hydrogen-bond interaction formed by organic carboxylic acid doping, the high-damp silica gel cement can be continuously broken and recombined under an external force to absorb energy; furthermore, the material has good self healing performance; as boric atoms are introduced into a silicone rubber main chain, regularity of the silicone rubber molecule chain is damaged, glass transition temperature is changed, and a damp temperature range is widened; the high-damp silica gel cement can meet shock absorption and durability requirements of the fields of aerospace, precise instruments and the like.

Description

technical field [0001] The invention relates to a silicone rubber material, in particular to a high-damping silica gel mud, a composite material containing the high-damping silica gel mud, a preparation method and an application thereof. Background technique [0002] With the development of industrial technology, vibration and noise are increasingly harmful to human production and life, and the use of damping materials is an effective measure for shock and noise reduction. Good damping materials can effectively absorb vibration mechanical energy and convert it into heat energy for dissipation, thereby reducing the adverse effects of vibration and noise. The damping performance of a material is usually evaluated by the maximum value of its damping loss factor and the size of the temperature domain where the loss factor is greater than 0.3. Among them, the silicon system material is an important damping material in high-end fields such as aerospace and precision instruments d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/06C08L9/06C08L23/22C08L101/00C08K13/02C08K3/04C08K3/24C08K3/38C08K5/14C08K5/09C08J3/24
CPCC08J3/24C08J3/246C08J2300/00C08J2309/06C08J2323/22C08J2383/06C08J2400/00C08J2409/06C08J2423/22C08J2483/06C08K3/04C08K3/24C08K3/38C08K5/09C08K5/14C08K13/02C08K2201/001C08K2201/014C08L9/06C08L23/22C08L83/06C08L101/00
Inventor 王俊豪
Owner DONGGUAN DIKELAN NEW MATERIAL TECH CO LTD
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