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Embedding damping pulp and method for preparing same

A damping slurry and potting technology, which is applied in chemical instruments and methods, and other chemical processes, can solve the problems of insufficient damping performance, high cost of potting materials, high specific gravity, etc., and achieve high damping, low cost, and wide application foreground effect

Inactive Publication Date: 2006-10-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a lightweight, low-cost hollow microsphere / polymer hybrid potting damping slurry and its manufacturing method, which solves the problems of high cost, high specific gravity and insufficient damping performance of current potting materials

Method used

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  • Embedding damping pulp and method for preparing same

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specific Embodiment approach 1

[0008] Embodiment 1: The mixed potting and damping slurry in this embodiment is an epoxy resin-polyurethane system mixed slurry containing 50-70 vol.% hollow microspheres.

[0009] In this embodiment, the epoxy resin is a glycidyl ether epoxy resin. The hollow microspheres are a kind of aluminosilicate hollow ceramic ball particles extracted from fly ash after coal combustion, and the average particle diameter is 60-140 μm.

specific Embodiment approach 2

[0010] Specific embodiment 2: In this embodiment, the mixed potting damping slurry is prepared according to the following method: (1) Wash the hollow microspheres with absolute ethanol to remove impurities on the surface, and then dry them at a high temperature of 110°C for later use; Microbeads are preheated at 100~120 ℃; (2) silane coupling agent is formulated into 10~20wt.% dehydrated alcohol solution, wherein the consumption of silane coupling agent is 6~10wt.% of hollow microbeads, will The above-mentioned hollow microspheres and absolute ethanol solution are mixed at a temperature of 40-60°C for 20-30 minutes, and then dried at a temperature of 100-120°C for 2-5 hours to obtain modified hollow microspheres; (3) in Add the above-mentioned modified hollow microspheres to the epoxy resin-polyurethane system, ultrasonically disperse them for 10-20 minutes, and dry them in vacuum to obtain an epoxy resin-polyurethane system mixed potting slurry containing 50-70vol.% hollow mic...

specific Embodiment approach 3

[0013] Embodiment 3: The hybrid potting and damping slurry of this embodiment is to add hollow microspheres to epoxy resin. The preparation process of the hollow microsphere / epoxy potting damping slurry is realized according to the following steps:

[0014] (1) Wash the hollow microspheres with an average particle size of 90 μm with absolute ethanol to remove impurities on the surface, and then dry them at a high temperature of 110° C. for later use;

[0015] (2) Preheat the hollow microspheres for use after drying at 110°C for 3 hours to a uniform temperature;

[0016] (3) Commercially available silane coupling agent KH-550 is formulated into 12wt.% dehydrated alcohol solution, wherein the consumption of silane coupling agent KH-550 is 8wt.% of the hollow microspheres, and the above-mentioned hollow beads with a mass of 40g Mix the microbeads with the solution at 50°C for 25 minutes, then dry in an oven at 110°C for 3 hours for use;

[0017] (4) Mix glycidyl ether epoxy res...

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Abstract

An embedding damped paste and its process for preparing relates to a damped paste and its process for preparing. In order to solve the problems that the present imbedding material is of high cost and high specific density and insufficient damping performance, the embedding damped paste of this invention is epoxide resin -polyurethane size mixture containing 50-70vol.% cenosphere. The principle process for preparing consists of adding the surface modified cenosphere according to a set proportion into epoxide resin base, with an adequate processing parameter, obtaining the said embedding micropore paste by ultrasonic dispersion and vacuum outgassing, which can be poured into the metal pipe, closed or semiclosed swash cavity to obtain the damping mechanism. The embedding paste has advantages that it is of low density (0.8-0.9g cm-3), low cost, high amortization and high strength.

Description

technical field [0001] The invention relates to a damping slurry and a preparation method thereof, in particular to a light-weight, low-cost, high-damping potting slurry and a preparation method thereof. Background technique [0002] In recent decades, with the development of modern industry, vibration tools and high-speed, high-efficiency and automatic mechanical equipment are increasing, and the problems of vibration, noise and fatigue fracture caused by them are becoming more and more prominent. In daily life, this kind of vibration and noise will endanger the health of the human body, and even lose the ability to work in severe cases; In the military, the vibration and dynamic response generated by the excitation of the engine and high-speed airflow during the operation of weapons, rockets and aircraft make the working environment of precision navigation instruments and optical systems more severe. Accuracy is difficult to guarantee. In the environment where people wor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/10C08K7/22C08L63/00C08L75/04
Inventor 武高辉顾健
Owner HARBIN INST OF TECH
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