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Process for preparing polysiloxanel alkyl poly(methyl) acrylate as damping material

A technology of alkyl methacrylate and alkyl acrylate, which is applied in the field of polymer synthesis and its forming and processing, can solve the problem of high refractive index, no mention of vibration reduction and noise reduction of materials, and no report of material damping performance test data. and other problems, to achieve the effect of simplifying the process, significant economic and social benefits, and high damping value

Inactive Publication Date: 2004-09-22
SICHUAN UNIV
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Problems solved by technology

The main purpose of this patent is to prepare transparent optical materials with a high refractive index. The full text neither mentions the application of the material in vibration reduction and noise reduction, nor reports the test data on the damping performance of the material.

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  • Process for preparing polysiloxanel alkyl poly(methyl) acrylate as damping material
  • Process for preparing polysiloxanel alkyl poly(methyl) acrylate as damping material
  • Process for preparing polysiloxanel alkyl poly(methyl) acrylate as damping material

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[0026] The present invention is specifically described below through the examples, it is necessary to point out that the following examples are only used to further illustrate the present invention, and can not be interpreted as limiting the protection scope of the present invention, those skilled in the art can according to above-mentioned this SUMMARY OF THE INVENTION Some non-essential improvements and adjustments are made to the present invention.

[0027] 1 to 3, for the preparation of α, ω-dihydroxymethylsiloxane oligomer, the specific formula components (wherein the parts of raw materials are all parts by weight unless otherwise specified), see Table 1 for details Show.

[0028] According to the formulation components in Table 1, methylphenyldihydroxysilane, octamethylcyclotetrasiloxane and alkali gum [containing (CH 3 ) 4 NOH 2%] into the reaction kettle with agitator, thermometer, condenser and gas inlet and outlet, start stirring, heat up to 110-120°C, when the vis...

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Abstract

A damping polysiloxane / alkyl poly(methyl)acrylate material is prepared from alpha, omega-dihydroxy polysiloxane oligomer, alkyl poly(methyl)acrylate, cross-linking agent, catalyst and trigger through proportioning, stirring at 0-60 deg.C under existance of nitrogen gas, loading in mould, and reacting at 60-90 deg.C and 0-5 MPa or in vacuum oven for 24 hr.

Description

1. Technical field [0001] The invention relates to a preparation method of a polysiloxane / poly(meth)acrylic acid alkyl ester damping material, which belongs to the field of polymer synthesis and molding processing. 2. Background technology [0002] Under the action of external force, when the movement of the chain segment is blocked in a semi-hysteresis state, the friction generated converts mechanical energy into heat energy and dissipates it. Polymer damping materials use this principle to achieve the purpose of reducing vibration and noise. In the polymer glass transition temperature transition zone, the polymer material has the greatest damping effect on vibration. Obviously, the width of the polymer glass transition temperature transition zone determines the size of the effective functional area of ​​the damping material. The homopolymer synthesized from one monomer has a narrow glass transition temperature transition zone, generally only 20-30°C. Therefore, obtaining...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/08
Inventor 黄光速李强何其佳江露霞
Owner SICHUAN UNIV
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