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FR2237838A1 - Coating shaped graphite with polyvinylidene fluoride - to improve impact strength and abrasion resistance - Google Patents

Coating shaped graphite with polyvinylidene fluoride - to improve impact strength and abrasion resistance

Info

Publication number
FR2237838A1
FR2237838A1 FR7326642A FR7326642A FR2237838A1 FR 2237838 A1 FR2237838 A1 FR 2237838A1 FR 7326642 A FR7326642 A FR 7326642A FR 7326642 A FR7326642 A FR 7326642A FR 2237838 A1 FR2237838 A1 FR 2237838A1
Authority
FR
France
Prior art keywords
abrasion resistance
polyvinylidene fluoride
impact strength
degrees
improve impact
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
FR7326642A
Other languages
French (fr)
Other versions
FR2237838B1 (en
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.)
Solvay SA
Original Assignee
Solvay SA
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 Solvay SA filed Critical Solvay SA
Priority to FR7326642A priority Critical patent/FR2237838A1/en
Publication of FR2237838A1 publication Critical patent/FR2237838A1/en
Application granted granted Critical
Publication of FR2237838B1 publication Critical patent/FR2237838B1/fr
Granted 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
    • C04B41/48—Macromolecular compounds
    • C04B41/4838—Halogenated polymers
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/82—Coating or impregnation with organic materials
    • C04B41/83—Macromolecular compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

The impact strength and abrasion resistance of graphite articles are improved by heating these at >200 degrees C, pref. 200-300 degrees C, esp. 225-270 degrees C and then coating, pref. by electrostatic spraying, with a polyvinylidene fluoride powder to a thickness of 0.1-1 mm. The process is more effective than when impregnating the graphite article with the polymer soln. and then removing solvent. The coated prods. are also non wettable. Process may be used for prodn. of electrodes, heat exchangers, pump components and particularly for the prodn. of Raschig ringo for which special precautions need not be taken when removing them from columns.
FR7326642A 1973-07-19 1973-07-19 Coating shaped graphite with polyvinylidene fluoride - to improve impact strength and abrasion resistance Granted FR2237838A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7326642A FR2237838A1 (en) 1973-07-19 1973-07-19 Coating shaped graphite with polyvinylidene fluoride - to improve impact strength and abrasion resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7326642A FR2237838A1 (en) 1973-07-19 1973-07-19 Coating shaped graphite with polyvinylidene fluoride - to improve impact strength and abrasion resistance

Publications (2)

Publication Number Publication Date
FR2237838A1 true FR2237838A1 (en) 1975-02-14
FR2237838B1 FR2237838B1 (en) 1976-11-12

Family

ID=9122886

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7326642A Granted FR2237838A1 (en) 1973-07-19 1973-07-19 Coating shaped graphite with polyvinylidene fluoride - to improve impact strength and abrasion resistance

Country Status (1)

Country Link
FR (1) FR2237838A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0296757A1 (en) * 1987-06-16 1988-12-28 Ucar Carbon Technology Corporation Method for sealing carbon and graphite surfaces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0296757A1 (en) * 1987-06-16 1988-12-28 Ucar Carbon Technology Corporation Method for sealing carbon and graphite surfaces

Also Published As

Publication number Publication date
FR2237838B1 (en) 1976-11-12

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Legal Events

Date Code Title Description
ST Notification of lapse