JPS57141430A - Lead-containing foam and its production - Google Patents

Lead-containing foam and its production

Info

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
Application number
JP2734881A
Other languages
Japanese (ja)
Other versions
JPS6025051B2 (en
Inventor
Keiichi Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP2734881A priority Critical patent/JPS6025051B2/en
Publication of JPS57141430A publication Critical patent/JPS57141430A/en
Publication of JPS6025051B2 publication Critical patent/JPS6025051B2/en
Expired legal-status Critical Current

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
JP2734881A 1981-02-25 1981-02-25 Lead-containing foam and its manufacturing method Expired JPS6025051B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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