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Technique for preparing echelon interpenetration polymer network damping material

A technology of interpenetrating polymers and damping materials, which is applied in the field of preparation technology of graded interpenetrating polymer network damping materials, can solve the problems that gradient interpenetrating polymer networks are difficult to realize industrialization, and achieve the purpose of broadening the effective damping temperature range, Easy to operate, increase the effect of energy consumption

Inactive Publication Date: 2012-06-27
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this method of preparing gradient interpenetrating polymer networks is difficult to achieve industrialization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of preparation technology of graded interpenetrating polymer network damping material, it is finished through the following steps: first, the molar ratio of acetic anhydride by acetyl group and epoxy acrylate hydroxyl group in vinyl ester resin is 1: 1 ratio drop Add it to epoxy acrylate, the reaction temperature is 50°C, and the reaction time is 0.75 hours to prepare hydroxyl-sealed epoxy acrylate, and mix it with butyl methacrylate at a mass ratio of 2:1 to prepare modified vinyl ester resin; then, polyurethane and modified vinyl ester resin were solidified at room temperature by synchronous interpenetration process to prepare a single-layer polyurethane / modified vinyl ester resin interpenetrating polymer network damping material, and when the time interval between the two layers was 5 hours, respectively Modelmus is prepared into 3 layers, and the composition ratio of each layer is a step -hydrated polyurethane / modified ethylene resin mutually wearing a polymer...

Embodiment 2

[0017] A kind of preparation technology of graded interpenetrating polymer network damping material, it is finished through the following steps: first, the molar ratio of acetyl chloride to the epoxy acrylate hydroxyl group in vinyl ester resin is 1.1:1. Add it to epoxy acrylate, the reaction temperature is 35°C, and the reaction time is 4 hours to prepare a hydroxyl group, and mix it with butyl methacrylate in a mass ratio of 2:1 to prepare a modified vinyl ester resin; then , Polyurethane and modified vinyl ester resin were solidified at room temperature through a synchronous interpenetrating process to prepare a single-layer polyurethane / modified vinyl ester resin interpenetrating polymer network damping material, which was injected separately when the time interval between the two layers was 5 hours. The number of layers is 3 layers, and the composition ratio of each layer is 6:4, 7:3, 8:2 graded polyurethane / modified vinyl ester resin interpenetrating polymer network dampi...

Embodiment 3

[0019] A preparation process of a graded interpenetrating polymer network damping material, which is completed through the following steps:

[0020] First, acetic anhydride or acetyl chloride is added dropwise to the epoxy acrylate according to the molar ratio of the acetyl group to the epoxy acrylate hydroxyl group in the vinyl ester resin as 1:1 or 1.1:1, and the reaction temperature is 50°C or 35 ℃, the reaction time is 0.75 hours or 4 hours, prepare hydroxyl-blocking epoxy acrylate and mix it with butyl methacrylate in a mass ratio of 2:1 to prepare modified vinyl ester resin; then, polyurethane and modified Ethyl -based ethyl ester resin can prepare a single -layer step -layer step -based polyurethane / modified ethylene ethyl ester resin mutually polymer network damping material by synchronizing the process room temperature. It is a graded polyurethane / modified vinyl ester resin interpenetrating polymer network damping material with three layers and the composition ratio o...

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Abstract

Preparation of gradient interpenetrating polymer networks damping material with wide temperature range, high damping, which can be used to reduce vibration and noise. The invention comprises firstly adding acetic anhydride or acetyl chloride into epoxy acrylate drop by drop according to a mole ratio of acetyl and epoxy acrylic hydroxyl 1:1-1.1:1, with reaction temperature from room temperature to50 DEG C., and reaction time 0.75-4 hours, preparing hydroxy epoxy acrylate, mixing it with butyl methacrylate with a mass ratio of 2:1 to prepare modified vinyl ester resin; then solididying polyurethane and modified vinyl ester resin through simultaneous interpenetrating process to prepare single layer polyurethane / modified vinyl ester resin interpenetrating polymer networks damping material,molding at the two layer respectively with a time interval of 5-7 hours, so gradient interpenetrating polymer networks damping material of polyurethane / modified vinyl ester resin with a compositionratio of 5:5 - 8:2 is prepared.

Description

Technical field: [0001] The invention relates to a preparation process of a wide temperature range, high damping graded interpenetrating polymer network damping material. Background technique: [0002] Damping material refers to a class of materials that can lose energy during the process of undergoing vibration deformation. It can effectively reduce vibration and noise reduction without changing the original design and structure of the device, especially the control of random vibration and noise of broadband bands. . High-performance damping materials require that the effective damping temperature range of the material (the temperature range where the damping factor tanδ>0.3) is 60°C to 80°C. In order to achieve effective vibration and noise reduction effects, it is necessary to start from two aspects at the same time. On the one hand, from the perspective of material design, the effective damping temperature range of materials should be broadened. The current researc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G81/02
Inventor 秦川丽白续铎姜海健谭强
Owner HEILONGJIANG UNIV
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