Molding material for vibration damping material, vibration damping material obtained by molding the same, and molded product for structural member
A technology for vibration damping materials and molding materials, which is applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of lowering the elastic modulus of molded products, increasing the cost, and increasing the number of processing steps, and achieves the effect of high loss coefficient.
Inactive Publication Date: 2017-10-03
SHOWA DENKO KK
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Problems solved by technology
However, by compounding an elastomer, the elastic modulus of the molded product decreases when used at high temperature, so the use as a product is limited
In addition, in order to further impart vibration damping and sound insulation, the current situation is that rubber, elastomer, or coating of vibration damping paint has to be designed on the resin part, which has the disadvantage of increasing the number of processing steps and increasing the cost.
Method used
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Embodiment
[0068] Hereinafter, although an Example demonstrates this invention more concretely, this invention is not limited to an Example.
[0069]
[0070] Under an inert gas, the compounding composition containing 80 mol of propylene glycol, 20 mol of hydrogenated bisphenol A, and 100 mol of maleic anhydride was condensed and esterified at 200 degreeC, and the unsaturated polyester was obtained. 60 parts by mass of the obtained unsaturated polyester was dissolved in 40 parts by mass of styrene monomer to prepare an unsaturated polyester resin.
[0071]
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Abstract
The objective of the present invention is to provide a molding material from which a molded article can be obtained that maintains mechanical strength not only at normal temperature but also at elevated temperature and has excellent damping and soundproof properties, and a molded article molded using the same. A molding material for a damping material which comprises two types or more of an unsaturated polyester resin (A-1) or a vinyl ester resin (A-2) having different glass transition temperatures after being cured individually, an elastomer (B) which is a block copolymer or a graft copolymer, a fiber (C) and a curing agent (D), wherein the elastomer (B) is composed of at least one type of segment (X) having a glass transition temperature of 10°C or more and less than 80°C and at least one type of segment (Y) having a glass transition temperature of 80°C or more.
Description
technical field [0001] The present invention relates to a molding material for a vibration damping material, a vibration damping material obtained by molding the same, and a molded product for a structural member. In particular, the present invention relates to a molding material capable of obtaining a molded article that maintains mechanical strength not only at normal temperature but also at high temperature and is excellent in vibration damping or sound insulation, and a molded article obtained by molding it. Background technique [0002] Motor parts used in automobiles, industrial equipment, home appliances, etc. cause vibration and noise. As a method of reducing / preventing these vibrations and noises and imparting vibration-damping and sound-insulating properties, it is common to use vibration-damping steel plates for these structural members, stick rubber or elastic bodies, or replace metal parts with resin parts. Here, when a vibration-damping steel plate is used as ...
Claims
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IPC IPC(8): C08F283/01C08F290/06C09K3/00
CPCC08F283/01C08F283/008C08F283/105C08F299/045C08K3/00C08L2205/16
Inventor 石内隆仁新原崇生
Owner SHOWA DENKO KK