Silicone rubber impact-resistant energy absorbing material and preparation method thereof

An energy-absorbing material and impact-resistant technology, applied in the fields of rubber impact-resistant energy-absorbing materials and their preparation, impact-resistant energy-absorbing materials and their preparation fields, can solve the problems of incompatibility between flexibility and impact resistance, and achieve easy-to-control, Strong energy dissipation ability and the effect of improving impact resistance and energy absorption

Active Publication Date: 2018-01-26
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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  • Silicone rubber impact-resistant energy absorbing material and preparation method thereof
  • Silicone rubber impact-resistant energy absorbing material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Add silica nanoparticles and polyethylene glycol monoallyl ether oligomer into the container at a weight ratio of 40:60, and then add the total amount of silica nanoparticles and polyethylene glycol monoallyl ether oligomer. 3 times the weight of ethanol, ultrasonically disperse until the silica nanoparticles are completely dispersed, and then remove the ethanol by rotating or heating evaporation to obtain a shear thickening solution.

[0029] Add vinyl-containing silicone oil or silicone resin, hydrogen-containing silicone oil or silicone resin, platinum catalyst, hydrophobic silica filler and the prepared shear thickening liquid into the mixing vessel 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 energy-absorbing material of the present invention. The ratio of the total mass of vinyl-containing silicone oil or silicone resin, hydrogen-...

Embodiment 2

[0031] Add silica nanoparticles and polyethylene glycol monoallyl ether oligomer into the container at a weight ratio of 70:30, and then add the total amount of silica nanoparticles and polyethylene glycol monoallyl ether oligomer. 3 times the weight of ethanol, ultrasonically disperse until the silica nanoparticles are completely dispersed, and then remove the ethanol by rotating or heating evaporation to obtain a shear thickening solution.

[0032] Add vinyl-containing silicone oil or silicone resin, hydrogen-containing silicone oil or silicone resin, platinum catalyst, hydrophobic silica filler and the prepared shear thickening liquid into the mixing vessel 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 energy-absorbing material of the present invention. The ratio of the total mass of vinyl-containing silicone oil or silicone resin, hydrogen-...

Embodiment 3

[0034] Add silica nanoparticles and polyethylene glycol monoallyl ether oligomer into the container at a weight ratio of 40:60, and then add the total amount of silica nanoparticles and polyethylene glycol monoallyl ether oligomer. 3 times the weight of ethanol, ultrasonically disperse until the silica nanoparticles are completely dispersed, and then remove the ethanol by rotating or heating evaporation to obtain a shear thickening solution.

[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 oil or silico...

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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 human body or equipment caused by impact. In order to avoid impact damage, it is necessary to select impact-resistant protective materials to protect personnel and equipment. When they are impacted, they can play a certain role in buffering, vibration reduction and energy absorption, thereby reducing the impact of impact on personnel and equipment. There are three types of impact-resistant materials in use today: rigid, semi-rigid, and flexible. Since the rigid and semi-rigid protective materials are not easy to bend, the movement of the individual is restricted during use, which brings a l...

Claims

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Application Information

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Patent Type & Authority Applications(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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