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Resin composition for damping materials

一种树脂组合物、阻尼材料的技术，应用在树脂组合物领域，能够解决没有报道阻尼性能、用途限制等问题，达到优异阻尼效果、降低能量使用、少环境限制的效果

Active Publication Date: 2019-06-07
COVESTRO DEUTSCHLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the correlation between the blending amount of polyol derived from castor oil and the damping performance index tan delta (Tan δ) and the relationship between the amount and the damping performance in the operating temperature range
In addition, Patent Document 3 discloses a damping material having excellent damping characteristics, but since the material is a high chlorine-containing polymer material or an organotin-based stabilizer, its use is limited due to environmental considerations

Method used

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  • Resin composition for damping materials
  • Resin composition for damping materials

Examples

Experimental program
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Embodiment 1

[0108] As the polyol-containing component (A), castor oil (polyol (A1)) (Industrial No. 1 castor oil available from Hokoku Co., Ltd.: having an average functional group number of about 2.7 and about 160 mgKOH / g The average hydroxyl value of the polyester polyol) ready to use. Then, with respect to 100 parts of polyol-containing component (A), 6.67 parts of ethylene glycol and 1.11 parts of monoethanolamine (as a crosslinking agent), 0.22 parts of Dabco 2040 (available from Air Products and Chemicals Inc. .’s 1,2-dimethylimidazole) (as an amine catalyst) and 0.06 parts of UL-22 (available from Momentive Performance Materials Inc. as isooctyl dimethyltin dithioacetate) (as a tin catalyst) to obtain Polyol mixture (X).

[0109] Polyisocyanate (B) (liquid carbodiimide-modified diphenylmethane diisocyanate (NCO% = 29%) available from Sumika Covestro Urethane Co., Ltd.) was then prepared ready to use.

[0110] Then, the polyol mixture (X) and (B) were mixed to have an isocyanate i...

Embodiment 2

[0112]Example 2 was obtained in the same manner as Example 1, except that polyether polyol (polyol A2) (propoxylated triol, including glycerol and propylene oxide, as component unit, with a functionality of about 3 and an OH value of about 445 to 495, available from Sumika Covestro Urethane Co., Ltd.) to replace 50% of the polyol (A1) in the formulation of Example 1 and change the amount of the metal catalyst to 0.03 parts by weight.

Embodiment 3

[0114] Example 3 was obtained in the same manner as in Example 1, except that the amount of ethylene glycol in the formulation of Example 1 was replaced with 13.33 parts by weight.

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Abstract

[Problem] The present invention is to provide a composition which can easily form a polyurethane resin which exerts particularly excellent damping properties in an operating temperature range. [Solution to Problem] A resin composition for damping materials, including a polyol-containing component (A) and a polyisocyanate (B), in which the polyol-containing component (A) contains a castor oil and in which when the composition is cured, the peak on its Tan(delta) curve is 0.7 or more and the temperature for the peak is in a range of -10 DEG C to 100 DEG C.

Description

[0001] Invention background. field of invention [0002] The present invention relates to a resin composition for damping materials. Background technique [0003] In recent years, damping materials applied to the underside of the vehicle body have been developed for the purpose of preventing vibration of the vehicle body to prevent noise generated therefrom. Damping materials of this type of application are generally very high viscosity objects and are difficult to apply anywhere other than the underbody of the vehicle body. A baking process in a coating drying oven is also required after application, causing a problem that a large amount of energy is required in production. [0004] As the damping material, a rubber-based material having flexibility, a urethane resin composition having damping properties, or the like is generally used. Regarding the damping material, for example, Patent Document 1 describes a damping material using a castor oil-derived polyol, but its da...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/66C08G18/79C08G18/32C08G18/36
CPCC08G18/4829C08G18/6696C08G18/797C08G18/3206C08G18/3271C08G18/36C08G18/18C08G18/22C08G18/7671C08G2350/00C08K5/05C08K5/17C08L75/04C08L2312/00
Inventor 西川新治佐渡信一郎
Owner COVESTRO DEUTSCHLAND AG