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A kind of silicone rubber impact-resistant energy-absorbing material and preparation method thereof

An energy-absorbing material and impact-resistant technology, which is applied in the fields of rubber impact-resistant energy-absorbing materials and their preparation, impact-resistant energy-absorbing materials and their preparation, can solve the problems of incompatibility between flexibility and impact resistance, and achieve easy control, The effect of strong energy dissipation ability and simple preparation method

Active Publication Date: 2020-05-22
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to make up for the incompatibility of flexibility and impact resistance of existing impact-resistant energy-absorbing materials, the present invention provides a silicone rubber with closed-cell foam structure and shear thickening liquid dispersed in the matrix structure in the form of droplets Impact-resistant energy-absorbing material and preparation method thereof

Method used

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  • A kind of silicone rubber impact-resistant energy-absorbing material and preparation method thereof
  • A kind of silicone rubber impact-resistant energy-absorbing material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0028] Silica nanoparticles and polyethylene glycol monoallyl ether oligomers are added to the container at a weight ratio of 40:60, and then the total amount of silica nanoparticles and polyethylene glycol monoallyl ether oligomers is added. 3 times the weight of ethanol, ultrasonically disperse until the silica nanoparticles are completely dispersed, and then remove the ethanol by rotating or heating and evaporating to obtain a shear thickening liquid.

[0029] Put vinyl-containing silicone oil or silicone resin, hydrogen-containing silicone oil or silicone resin, platinum catalyst, hydrophobic white carbon black filler, and the prepared shear thickening liquid into the mixing container in corresponding proportions, and mix under the action of mechanical stirring , and then cured at a temperature of 120° C. for 1 hour to obtain the silicone rubber impact-resistant and energy-absorbing material of the present invention. The ratio of the total mass of vinyl-containing silicone...

Embodiment 2

[0031] Silica nanoparticles and polyethylene glycol monoallyl ether oligomers are added to the container at a weight ratio of 70:30, and then the total amount of silica nanoparticles and polyethylene glycol monoallyl ether oligomers is added. 3 times the weight of ethanol, ultrasonically disperse until the silica nanoparticles are completely dispersed, and then remove the ethanol by rotating or heating and evaporating to obtain a shear thickening liquid.

[0032] Put vinyl-containing silicone oil or silicone resin, hydrogen-containing silicone oil or silicone resin, platinum catalyst, hydrophobic white carbon black filler, and the prepared shear thickening liquid into the mixing container in corresponding proportions, and mix under the action of mechanical stirring , and then cured at a temperature of 120° C. for 1 hour to obtain the silicone rubber impact-resistant and energy-absorbing material of the present invention. The ratio of the total mass of vinyl-containing silicone...

Embodiment 3

[0034] Silica nanoparticles and polyethylene glycol monoallyl ether oligomers are added to the container at a weight ratio of 40:60, and then the total amount of silica nanoparticles and polyethylene glycol monoallyl ether oligomers is added. 3 times the weight of ethanol, ultrasonically disperse until the silica nanoparticles are completely dispersed, and then remove the ethanol by rotating or heating and evaporating to obtain a shear thickening liquid.

[0035]Put vinyl-containing silicone oil or silicone resin, hydrogen-containing silicone oil or silicone resin, platinum catalyst, hydrophobic white carbon black filler, and the prepared shear thickening liquid into the mixing container in corresponding proportions, and mix under the action of mechanical stirring , and then cured at a temperature of 120° C. for 1 hour to obtain the silicone rubber impact-resistant and energy-absorbing material of the present invention. The ratio of the total mass of vinyl-containing silicone ...

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Abstract

The invention discloses a preparation method of a silicone rubber impact-resistant energy absorbing material. The method comprises the following steps: preparing a shear thickening fluid from micro-nano particles and a polyethylene glycol monoallyl ether oligomer; and mixing the prepared shear thickening fluid and a hydrosilylation liquid silicone rubber composition, and curing, thereby obtainingthe product. The invention further provides a silicone rubber impact-resistant energy absorbing material. According to the impact-resistant energy absorbing material disclosed by the invention, due tosimultaneous existence of the shear thickening fluid and closed pores, the impact resistance and energy absorbing ability of the material are improved, and the energy dissipation ability is high. Moreover, when stressed by external force, the material intelligently shows impact resistance of changing from softness to hardness. The preparation method is simple and easy to control and has certain economic and social effects.

Description

technical field [0001] The invention relates to an impact-resistant energy-absorbing material and a preparation method thereof, in particular to a rubber impact-resistant energy-absorbing material and a preparation method thereof, belonging to the technical field of functional materials. Background technique [0002] In daily work and life, we are always faced with the harm and damage to the human body or equipment caused by the impact. In order to avoid impact damage, it is necessary to choose impact-resistant protective materials to protect personnel and equipment. When they are impacted, they can play a certain role in cushioning, vibration reduction and energy absorption, thereby reducing the impact on personnel and equipment. There are three types of impact-resistant materials currently used: hard, semi-rigid, and flexible. Since the hard and semi-rigid protective materials are not easy to bend, the activities of the individual will be restricted during use, causing a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/05C08L71/02C08K3/36
Inventor 刘忠平钟发春罗琳琳邓志华
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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