GB740899A - Improvements in or relating to polymeric substances - Google Patents

Improvements in or relating to polymeric substances

Info

Publication number
GB740899A
GB740899A GB2392152A GB2392152A GB740899A GB 740899 A GB740899 A GB 740899A GB 2392152 A GB2392152 A GB 2392152A GB 2392152 A GB2392152 A GB 2392152A GB 740899 A GB740899 A GB 740899A
Authority
GB
United Kingdom
Prior art keywords
per square
polyethylene
crystalline
square centimetre
thermal
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
GB2392152A
Inventor
Arthur Charlesby
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB2392152A priority Critical patent/GB740899A/en
Publication of GB740899A publication Critical patent/GB740899A/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

Abstract

Polymers with a chain structure of carbon atoms having hydrogen atoms attached thereto and which change from a crystalline to a molten state on heating, e.g. polyethylene, are cross-linked by subjecting them to ionising radiation at a temperature sufficiently high for the crystalline state to be partially or wholly destroyed. In examples, polyethylene rod in an aluminium can is heated at 100 DEG to 150 DEG C. in a thermal nuclear reactor with a density of approximately 1012 neutrons per square centimetre per second for periods sufficient to give dosages of 3 and 8 X 1017 thermal neutrons per square centimetre. The product, which is pliable and elastic, has increased resistance to organic solvents and cold drawing. Specifications 732,047 and 739,709 are referred to.
GB2392152A 1952-09-24 1952-09-24 Improvements in or relating to polymeric substances Expired GB740899A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2392152A GB740899A (en) 1952-09-24 1952-09-24 Improvements in or relating to polymeric substances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2392152A GB740899A (en) 1952-09-24 1952-09-24 Improvements in or relating to polymeric substances

Publications (1)

Publication Number Publication Date
GB740899A true GB740899A (en) 1955-11-23

Family

ID=10203451

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2392152A Expired GB740899A (en) 1952-09-24 1952-09-24 Improvements in or relating to polymeric substances

Country Status (1)

Country Link
GB (1) GB740899A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2964455A (en) * 1956-11-05 1960-12-13 Du Pont Electron irradiation of organic polyethers
US3006831A (en) * 1957-09-11 1961-10-31 Shell Oil Co Radiation of asphalts
US3116226A (en) * 1959-03-16 1963-12-31 Du Pont Irradiation of fluorocarbon copoluymers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2964455A (en) * 1956-11-05 1960-12-13 Du Pont Electron irradiation of organic polyethers
US3006831A (en) * 1957-09-11 1961-10-31 Shell Oil Co Radiation of asphalts
US3116226A (en) * 1959-03-16 1963-12-31 Du Pont Irradiation of fluorocarbon copoluymers

Similar Documents

Publication Publication Date Title
ES247631A1 (en) Solar heater
JPS5397003A (en) Thermal cracking treatment of petroleum heavy oil
ES453572A1 (en) Nuclear core region fastener arrangement
GB986939A (en) Nuclear fuel element with carbon jacket
ES328916A1 (en) Procedure for the obtaining of molded bodies of expanded plastic. (Machine-translation by Google Translate, not legally binding)
GB818963A (en) Polyethylene of improved stability
GB740899A (en) Improvements in or relating to polymeric substances
GB1062875A (en) Nuclear reactor fuel
ES462154A1 (en) Method for the dissipation of surplus heat from a solar collector heating system and apparatus employing such metho
GB949743A (en) Nuclear reactor
GB1064447A (en) Producing acetylene by pyrolysis
GB1049018A (en) Improvements in or relating to shaped coke
GB739709A (en) Improvements in or relating to treatment of polymeric substances
ES447310A1 (en) Heating device provided of a solar accessory heat accumulating device. (Machine-translation by Google Translate, not legally binding)
GB1420456A (en) Method of fabrication of nuclear reactor fuel elements
MORGAN et al. High-temperature graphite irradiations: 550 to 1450 C(Physical properties and dimensional changes in graphites caused by high temperature neutron irradiation)
KLEIN Experimental investigation to simulate propellant heating in the nuclear light bulb engine(Simulation of nuclear light bulb engine propellant radiative heating, using argon seeded with micronsized carbon particles and 500 kw dc arc as radiant energy source)
GB921434A (en) Improvements in or relating to nuclear reactor fuel elements
LCF Radiation Damage in Well Oriented Pyrolytic Graphites
ES279192A1 (en) A procedure to manufacture black of smoke (Machine-translation by Google Translate, not legally binding)
GB918839A (en) Operation of nuclear reactor plants
GB1003973A (en) Improvements in or relating to treating quartz crystals for optical uses
CA713175A (en) Operation of nuclear reactor with organic moderator and coolant thermal energy and heat of combustion
Men et al. Investigation of thermal conductivity, thermal diffusivity, and emittance of semitransparent materials at high temperatures
LAUBITZ Thermal conductivity measured by unmatched guard method, with discussion of calibration curves of the thermocouple