JPS57141430A - Lead-containing foam and its production - Google Patents
Lead-containing foam and its productionInfo
- Publication number
- JPS57141430A JPS57141430A JP2734881A JP2734881A JPS57141430A JP S57141430 A JPS57141430 A JP S57141430A JP 2734881 A JP2734881 A JP 2734881A JP 2734881 A JP2734881 A JP 2734881A JP S57141430 A JPS57141430 A JP S57141430A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- mold
- crosslinking
- blowing agent
- lead
- 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.)
- Granted
Links
Abstract
PURPOSE: To obtain a lead-containing foam which is extremely light and flexible and which intercepts radiations, high frequency waves, etc., by mixing a natural rubber or synthetic rubber foam with a lead compound, a blowing agent, a crosslinking agent, an antioxidant, etc., and then foaming and crosslinking the mixture.
CONSTITUTION: 100pts.wt. natural rubber or synthetic rubber is mixed with at least 300pts.wt. lead compound and then with a blowing agent, crosslinking agent, a crosslinking aid, a softener, an antioxidant, etc. The mixture is aged by standing, and this uncrosslinked compound is placed in a mold. When the compound is heated therein under pressure, the blowing agent contained decomposes at a predetermined temperature, cell factors form in the compound and then a crosslinking reaction proceeds. The compound in the mold expands by a gas pressure produced by the decomposition of the blowing agent by evacuation and the heat of decomposition and pressed out of the mold. In this case, it is possible to produce closed cells and open cells, as demanded, by varying the charge of the compound in the mold. When the thus produced foam is again placed in a separate mold and heated therein, undecomposed gas is completely released, and the crosslinking reaction is brought to completion.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2734881A JPS6025051B2 (en) | 1981-02-25 | 1981-02-25 | Lead-containing foam and its manufacturing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2734881A JPS6025051B2 (en) | 1981-02-25 | 1981-02-25 | Lead-containing foam and its manufacturing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57141430A true JPS57141430A (en) | 1982-09-01 |
JPS6025051B2 JPS6025051B2 (en) | 1985-06-15 |
Family
ID=12218530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2734881A Expired JPS6025051B2 (en) | 1981-02-25 | 1981-02-25 | Lead-containing foam and its manufacturing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6025051B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01199196A (en) * | 1988-02-03 | 1989-08-10 | Mitsubishi Cable Ind Ltd | Radiation protective clothing |
JPH0277696A (en) * | 1988-09-13 | 1990-03-16 | Fujimori Kogyo Kk | X-ray protection case |
US5278219A (en) * | 1988-11-25 | 1994-01-11 | Lilley Martin J | Flexible highly filled compositions |
US7384576B1 (en) | 2002-12-17 | 2008-06-10 | Lanxess Deutschland Gmbh | Lead-free mixture as a radiation protection additive |
-
1981
- 1981-02-25 JP JP2734881A patent/JPS6025051B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01199196A (en) * | 1988-02-03 | 1989-08-10 | Mitsubishi Cable Ind Ltd | Radiation protective clothing |
JPH0277696A (en) * | 1988-09-13 | 1990-03-16 | Fujimori Kogyo Kk | X-ray protection case |
US5278219A (en) * | 1988-11-25 | 1994-01-11 | Lilley Martin J | Flexible highly filled compositions |
US7384576B1 (en) | 2002-12-17 | 2008-06-10 | Lanxess Deutschland Gmbh | Lead-free mixture as a radiation protection additive |
Also Published As
Publication number | Publication date |
---|---|
JPS6025051B2 (en) | 1985-06-15 |
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