High-temperature-resistant wide-temperature-range high-damping polyurethane elastomer material and preparation method thereof

A technology of polyurethane elastomer and high temperature resistance, which is applied in the field of damping materials, can solve the problems of further improvement of mechanical properties and high temperature resistance, and achieve the effects of widening the damping temperature range, improving damping performance, and improving damping performance
CN110894277AActive Publication Date: 2020-03-20SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2020-03-20

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Abstract

The invention discloses a high-temperature-resistant wide-temperature-range high-damping polyurethane elastomer material and a preparation method thereof. The raw material formula of the material comprises the following components in parts by weight: 12-48 parts of a polyurethane prepolymer, 2-8 parts of a disulfide bond-containing micromolecular chain extender and 5-25 parts of a suspension chainprepolymer. The polyurethane prepolymer undergoes chain extension in virtue of the disulfide bond-containing micromolecular chain extender and then reacts with the suspension chain prepolymer to obtain the high-temperature-resistant wide-temperature-range high-damping polyurethane elastomer material. According to the invention, a few suspension chain structures can ensure certain mechanical properties while improving the damping performance of the polyurethane material, and the high temperature resistance of polysiloxane can improve the maximum long-term use temperature of polyurethane with the suspension chains; the effective damping temperature range (wherein tan delta is greater than or equal to 0.3) of the obtained damping material exceeds 170 DEG C; and the damping material can be used for a long time at 120 DEG C and has a good application effect.
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Description

technical field

[0001] The invention relates to a polyurethane elastomer, in particular to a high-temperature-resistant, wide-temperature-range, high-damping polyurethane elastomer based on the synergistic effect of polysiloxane suspension chains and dynamic disulfide exchange reactions and a preparation method thereof; it belongs to the technology of damping materials field. Background technique

[0002] The rapid development of industrial society produces more and more noise and vibration, and vibration and noise not only cause fatigue and reduce precision of precision mechanical equipment, but also damage people's health. With the development of science and technology, more stringent requirements are put forward for efficient shock and noise reduction in many fields, especially in high-end precision manufacturing, aerospace, military defense, and building anti-seismic. An important method of shock and noise reduction is the use of damping materials. Elastomer damping ma...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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