JPS5446244A - Syntactic foam - Google Patents
Syntactic foamInfo
- Publication number
- JPS5446244A JPS5446244A JP11279977A JP11279977A JPS5446244A JP S5446244 A JPS5446244 A JP S5446244A JP 11279977 A JP11279977 A JP 11279977A JP 11279977 A JP11279977 A JP 11279977A JP S5446244 A JPS5446244 A JP S5446244A
- Authority
- JP
- Japan
- Prior art keywords
- thermosetting resin
- vacuum impregnation
- foam
- resin
- specific gravity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
PURPOSE: A syntactic foam having a low specific gravity, improved mechanical property, and uniformity, prepared by dispensing hollow spheres homogeneously in a thermosetting resin containing a thermoplastic resin.
CONSTITUTION: A syntactic foam is obtained from (A) a resin blend of a thermosetting resin and a thermoplastic resin, and (B) hollow spheres having a particle size of preferably 5W500μ by the vacuum impregnation or mixing method. The addition of the thermoplastic resin by the mixing method permits the foam having almost the same specific gravity as that obtained from thermosetting resin alone by the vacuum impregnation method. The vacuum impregnation of the resin blend gives a foam having a specific gravity about 0.1W0.2 lower than the thermosetting resin alone. If a long time is required for molding, e.g. vacuum impregnation, a combination of (a) a prepolymer having ester linkages and double bonds in the molecule and (b) a thermosetting resin consisting of a radically polymerizable monomer compatible with the prepolymer, and (c) a (co) polymer of styrene, an alkyl (meth) acrylate, etc. is preferred.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11279977A JPS5446244A (en) | 1977-09-19 | 1977-09-19 | Syntactic foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11279977A JPS5446244A (en) | 1977-09-19 | 1977-09-19 | Syntactic foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5446244A true JPS5446244A (en) | 1979-04-12 |
Family
ID=14595799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11279977A Pending JPS5446244A (en) | 1977-09-19 | 1977-09-19 | Syntactic foam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5446244A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5857462A (en) * | 1981-09-30 | 1983-04-05 | Nok Corp | Silicone rubber material filled with hollow spheres |
| JP2004134529A (en) * | 2002-10-09 | 2004-04-30 | Yokohama Rubber Co Ltd:The | Structure of electric wave absorber, and method for manufacturing electric wave absorber |
-
1977
- 1977-09-19 JP JP11279977A patent/JPS5446244A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5857462A (en) * | 1981-09-30 | 1983-04-05 | Nok Corp | Silicone rubber material filled with hollow spheres |
| JP2004134529A (en) * | 2002-10-09 | 2004-04-30 | Yokohama Rubber Co Ltd:The | Structure of electric wave absorber, and method for manufacturing electric wave absorber |
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