High-temperature-resistant UV polymeric bulk foam damping material and preparation method thereof

Abstract

The invention relates to a high-temperature-resistant UV polymericbulk foam damping material and a preparation method thereof. The preparation comprises the following steps: adding POSS, an acrylate copolymer, a reactive diluent and a photoinitiator into a reaction kettle, and performing stirring for swelling to form a uniform UV polymeric bulk foam damping material composition; and uniformly coating a release PET film by the obtained damping material composition, and performing illumination under ultraviolet light for 3-6 min to obtain the UV polymeric bulk foam damping material. The dampingmaterial provided by the invention has the following beneficial effects: 1, POSS is used as an inorganic bulk foaming agent, an addition amount of the POSS particles is controlled, so that the productdensity can be precisely controlled according to requirements, and the loss factor of the material can be improved; and the POSS can form stable nano-scale dispersion without any treatment in the material system; and 2, the process flow is simple, the reaction speed is fast, the production efficiency is high, and the costs are reduced.

Description

technical field [0001] The invention relates to the field of damping materials, in particular to a high-temperature-resistant UV polymerized bulk foaming damping material and a preparation method thereof. Background technique [0002] The vibration and noise generated by mechanical operation not only pollute the environment, but also affect the machining accuracy and product quality of the machine, accelerate the fatigue damage of the mechanical structure, and shorten the service life of the machine. Damping material is a material that converts solid mechanical vibration energy into heat energy and dissipates it. It is mainly used for vibration and noise control. The design principle of the damping material is: try to make the hysteresis loss as large as possible, the loss modulus is high, the storage modulus is low, and the effective damping temperature range is wide. The damping performance of a damping material can be measured in terms of its ability to dissipate vibrati...

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Problems solved by technology

Although the damping material prepared by this patent can solve the above problems to a certain extent, there are still the following disadvantages: 1. The technical route of this patent is very cumbersome and complicated, and the time and labor costs are high; 2. The damping performance of the material prepared by this patent It largely depends on the dispersion characteristics of inorganic particles. The inorganic particles used must first be treated with a silane coupling agent of a specific structure, otherwise they are easily precipitated from the system, or even agglomerated to cause serious phase separation. The service life is seriously affected; 3. The damping material prepared by this patent has a low service temperature, and the heat-resistant temperature is generally lower than 300°C, which cannot meet the use requirements of higher temperatures

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