FR2131260A5 - Acrylonitrile impregnated carbon - with irradiation and pyrolysis, to reduce porosity and raise strength - Google Patents

Acrylonitrile impregnated carbon - with irradiation and pyrolysis, to reduce porosity and raise strength

Info

Publication number
FR2131260A5
FR2131260A5 FR7140635A FR7140635A FR2131260A5 FR 2131260 A5 FR2131260 A5 FR 2131260A5 FR 7140635 A FR7140635 A FR 7140635A FR 7140635 A FR7140635 A FR 7140635A FR 2131260 A5 FR2131260 A5 FR 2131260A5
Authority
FR
France
Prior art keywords
acrylonitrile
pyrolysis
irradiation
impregnated carbon
reduce porosity
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.)
Expired
Application number
FR7140635A
Other languages
French (fr)
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.)
US Atomic Energy Commission (AEC)
Original Assignee
US Atomic Energy Commission (AEC)
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 US Atomic Energy Commission (AEC) filed Critical US Atomic Energy Commission (AEC)
Application granted granted Critical
Publication of FR2131260A5 publication Critical patent/FR2131260A5/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/521—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained by impregnation of carbon products with a carbonisable material

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Catalysts (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

Acrylonitrile-impregnated porous C or graphite is irradiated with gamma-rays of 105-109 Rad dosage and heated to >=200 degrees C, esp. 200-400 degrees C, to pyrolyse the polyacrylonitrile formed. Structural materials for chemical processes, esp. involving corrosive gases or liquids and/or high temps. (1) No need for catalyst; (2) reduced porosity of product; (3) increased compressive strength, e.g. by 38% while modulus rises by 4%; (4) increased resistance to chemicals.
FR7140635A 1970-11-13 1971-11-12 Acrylonitrile impregnated carbon - with irradiation and pyrolysis, to reduce porosity and raise strength Expired FR2131260A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8952470A 1970-11-13 1970-11-13

Publications (1)

Publication Number Publication Date
FR2131260A5 true FR2131260A5 (en) 1972-11-10

Family

ID=22218115

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7140635A Expired FR2131260A5 (en) 1970-11-13 1971-11-12 Acrylonitrile impregnated carbon - with irradiation and pyrolysis, to reduce porosity and raise strength

Country Status (3)

Country Link
AU (1) AU3544271A (en)
DE (1) DE2155860A1 (en)
FR (1) FR2131260A5 (en)

Also Published As

Publication number Publication date
AU3544271A (en) 1973-05-17
DE2155860A1 (en) 1972-05-25

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Legal Events

Date Code Title Description
ST Notification of lapse