High phenyl siloxane rubber-based high-intensity, wide-temperature range and high-damping material

Abstract

The invention relates to a high phenyl siloxane rubber-based high-intensity, wide-temperature range and high-damping material. The material comprises the following components in percentage by mass: 87.7 to 96.2 percent of high phenyl siloxane rubber, 1.8 to 1.9 percent of peroxide vulcanizing agent, 0 to 8.7 percent of mica sheet, 0 to 1.9 percent of acrylic ester damping agent and 0 to 8.9 percent of methyl methacrylate copolymer. The damping material is used for modifying the conventional material, so that the modified conventional material has high damping, vibration isolating and buffering performance as well as high mechanical property in a relatively wide temperature range; the material can meet the requirements of the tensile strength of more than or equal to 7 MPa, the elongation at rupture of more than or equal to 300 percent, the tearing strength of more than or equal to 20 kN / m, the damping coefficient beta max of more than or equal to 0.2 and the tearing permanent deformation of less than or equal to 25 percent and meets using requirements at the temperature of between 50 DEG C below zero and 150 DEG C; and volatile substances such as a plasticizer and process oil are not added in the formula of the material, so that the number of volatile matters in vacuum atmosphere is small and the pollution of the volatile matters on certain equipment on which the material is used is avoided.

Description

technical field [0001] The invention relates to a high-strength (tensile strength ≥ 7MPa) wide temperature (in the temperature range of -50 to +150 ℃) high damping (damping coefficient β max ≥0.2) materials, especially a high-strength, wide-temperature, and high-damping material based on high-phenyl silicone rubber (the phenyl content is greater than 15%, by mass percentage), belongs to the technical field of damping material formulation design, and is mainly used for vibration isolation / damping The damping rubber material of the device and the additional damping treatment material of the structure. Background technique [0002] The damping vibration isolation technology developed based on the viscoelastic damping material is an effective way to control vibration, impact and noise, and an effective means to improve the mechanical environment of structures and equipment, especially for broadband random vibration and impact problems of high-precision equipment Even more irrep...

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Problems solved by technology

[0003] The applicable temperature of existing domestic damping materials is generally around -30~+100℃, the damping factor β is only up to about 0.2, the tensile strength is low, and either the applicable temperature range is narrow or the damping factor is low, which cannot reach a wide temperature range. It has both good damping and vibration isolation performance and good mechanical properties. Compared with the performance of foreign damping materials, there is a big gap, and it can no longer meet the requirements of complex and harsh environments. Therefore, it is urgent to improve the existing materials and develop the use of Wider temperature range (-50~+150℃), higher damping factor (damping coefficient β max ≥0.2), higher strength (tensile strength ≥7MPa) damping material to meet the needs of various equipment and instruments

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