GB816791A - Improvements in methods of cross-linking or vulcanizing synthetic resins or rubbers by means of ionizing radiations - Google Patents

Improvements in methods of cross-linking or vulcanizing synthetic resins or rubbers by means of ionizing radiations

Info

Publication number
GB816791A
GB816791A GB27012/55A GB2701255A GB816791A GB 816791 A GB816791 A GB 816791A GB 27012/55 A GB27012/55 A GB 27012/55A GB 2701255 A GB2701255 A GB 2701255A GB 816791 A GB816791 A GB 816791A
Authority
GB
United Kingdom
Prior art keywords
rays
treatment
vacuum
polyethylene
referred
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
GB27012/55A
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.)
Centre National de la Recherche Scientifique CNRS
Original Assignee
Centre National de la Recherche Scientifique CNRS
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 Centre National de la Recherche Scientifique CNRS filed Critical Centre National de la Recherche Scientifique CNRS
Publication of GB816791A publication Critical patent/GB816791A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/04—After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation, e.g. for curing or vulcanising preformed articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0844—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using X-ray
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/085—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using gamma-ray
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
    • B29C2035/0877—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
    • B29C2035/0883—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using neutron radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material

Landscapes

  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

Synthetic resin or rubber is cross-linked and/or vulcanized by treatment with ionizing radiation such as accelerated electrons, neutrons, X-rays, or gamma-rays in the substantially complete absence of molecular oxygen, both in contact with the surface of the substance and within the substance itself. The treatment may be performed in a vacuum or in a nonoxidizing atmosphere, e.g. of nitrogen, a rare gas, or carbon dioxide, or air may be excluded from the material being treated by covering it with aluminium foil, a transparent cellulose film, or varnish. The treatment of polyethylene, polystyrene, a polyester, natural rubber, and a butadiene-styrene copolymer is referred to. Examples are described illustrating the high tensile strength of polyethylene samples treated with gamma rays in a vacuum and in a nitrogen atmosphere, and of other polyethylene samples treated with X-rays when covered with aluminium foil or a transparent cellulose film. Specification 665,263 is referred to.ALSO:Synthetic resin or rubber is cross-linked and/or vulcanized by treatment with ionizing radiation such as accelerated electrons, neutrons, X-rays, or gamma rays in the substantially complete absence of molecular oxygen, both in contact with the surface of the substance and within the substance itself. The treatment may be performed in a vacuum or in a non-oxidizing atmosphere, e.g. of nitrogen, a rare gas, or carbon dioxide, or air may be excluded from the material being treated by covering it with aluminium foil, a transparent cellulose film or varnish. The treatment of polyethylene, polystyrene, a polyester, natural rubber, and a butadiene-styrene copolymer is referred to. Examples are described illustrating the high tensile strength of polyethylene samples treated with gamma rays in a vacuum and in a nitrogen atmosphere, and of other polyethylene samples treated with X-rays when covered with aluminium foil or a transparent cellulose film. Specification 665,263, [Group III], is referred to.
GB27012/55A 1954-09-24 1955-09-21 Improvements in methods of cross-linking or vulcanizing synthetic resins or rubbers by means of ionizing radiations Expired GB816791A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR816791X 1954-09-24

Publications (1)

Publication Number Publication Date
GB816791A true GB816791A (en) 1959-07-22

Family

ID=9267972

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27012/55A Expired GB816791A (en) 1954-09-24 1955-09-21 Improvements in methods of cross-linking or vulcanizing synthetic resins or rubbers by means of ionizing radiations

Country Status (1)

Country Link
GB (1) GB816791A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110894303A (en) * 2019-12-20 2020-03-20 中广核达胜加速器技术有限公司 Preparation method and preparation device of electron beam irradiation crosslinked polystyrene material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110894303A (en) * 2019-12-20 2020-03-20 中广核达胜加速器技术有限公司 Preparation method and preparation device of electron beam irradiation crosslinked polystyrene material

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