Unlock instant, AI-driven research and patent intelligence for your innovation.

Emulsion for vibration damper

A vibration damping material and emulsion technology, which is applied in non-rotational vibration suppression, other chemical processes, coatings, etc., can solve problems such as cracks on the surface of the coating film and insufficient film formation

Inactive Publication Date: 2008-07-23
NIPPON SHOKUBAI CO LTD
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, film-forming properties (especially film-forming properties after coating at low temperature) are insufficient, and cracks may appear on the surface of the coating film. Therefore, in terms of improving this defect to make it suitable as a raw material for vibration damping materials, There is still room for research

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Emulsion for vibration damper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0135] Deionized water (76 parts) was added to a polymerizer equipped with a stirrer, reflux condenser, thermometer, nitrogen gas inlet and dropping funnel. Then, the internal temperature was raised to 70° C. with stirring under nitrogen flow. On the other hand, in the dropping funnel, add monomer emulsion 1, this monomer emulsion 1 is made of methyl methacrylate (54.4 parts), acrylate-2-ethylhexyl (44.6 parts), acrylic acid (1.0 parts), tert-dodecyl mercaptan (0.4 parts), sulfate ester salt of polyoxyethylene alkyl ether (manufactured by Daiichi Kogyo Pharmaceutical Co., Ltd., "Hitenol NF-08", 15 parts) adjusted to a 20% aqueous solution beforehand, and deionized water (10 servings) made up.

[0136] Add monomer emulsion 1 dropwise to a polymerizer whose temperature is adjusted to 70°C to start the reaction, and after raising the temperature to 80°C, uniformly drop monomer emulsion 1 over 2 hours while maintaining the internal temperature at 80°C . Simultaneously, 5% potas...

Embodiment 2～16

[0142] An emulsion for a vibration damping material was obtained in the same manner as in Example 1 except that the composition of the monomer components for forming the core portion and the shell portion was adjusted to the compositions shown in Table 1 and Table 2.

[0143] Various physical properties and the like were evaluated for this emulsion for vibration damping material in the same manner as in Example 1. The results are listed in Table 1 and Table 2. In addition, the areal weight of Example 11 on the substrate was determined. The results are listed in Table 5.

Embodiment 17

[0145] The composition of the monomer components used to form the core and the shell was adjusted to the composition shown in Table 2, and 1.5 parts of foaming agent ("EXPANCEL WU642 ", Japanese Fillite company manufactures), except that is identical with embodiment 1, obtains the emulsion for damping material.

[0146] Various physical properties and the like were evaluated for this emulsion for vibration damping material in the same manner as in Example 1. The results are listed in Table 2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
glass transition temperatureaaaaaaaaaa
particle sizeaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
Login to View More

Abstract

The present invention relates to an emulsion for a vibration damping material, which is used for vibration damping materials of various structures, and which is excellent in vibration damping properties in a wide temperature range, heat drying, and low-temperature film-forming properties, and can sufficiently suppress vibration damping The sagging of a film of material on a vertical surface. The vibration damping material emulsion contains particles having a core portion composed of an acrylic copolymer (A) and a shell portion composed of an acrylic copolymer (B), and the weight average molecular weight and / or The weight-average molecular weight of the particles with core and shell is 20,000-250,000.

Description

technical field [0001] The present invention relates to emulsions for vibration damping materials. More specifically, the present invention relates to an emulsion for a vibration-damping material useful as a raw material of a vibration-damping material for preventing vibration or noise from being generated in various structures to keep quiet. Background technique [0002] Vibration-absorbing materials are materials used to prevent vibration or noise in various structures to keep quiet. It is widely used in equipment, building structures, construction machinery, etc. As raw materials used in such vibration-absorbing materials, molded products such as plate-like moldings or sheet-like moldings made of materials having vibration-absorbing performance and sound-absorbing performance have conventionally been used. When the shape is complex, it is difficult to use these molded products in places where vibration occurs, so various methods are being studied to improve the operabil...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00C08F2/22C08F265/06F16F15/02
CPCC08F265/06C08F285/00C08L51/003C09D151/003F16F1/3605C08L2666/04C08L2666/02C09K3/00C08F2/22F16F15/02
Inventor 宫脇幸弘永石大
Owner NIPPON SHOKUBAI CO LTD