GB1191624A - Improvements in or relating to Resinous Components for use in Electrical Insulation - Google Patents

Improvements in or relating to Resinous Components for use in Electrical Insulation

Info

Publication number
GB1191624A
GB1191624A GB34609/66A GB3460966A GB1191624A GB 1191624 A GB1191624 A GB 1191624A GB 34609/66 A GB34609/66 A GB 34609/66A GB 3460966 A GB3460966 A GB 3460966A GB 1191624 A GB1191624 A GB 1191624A
Authority
GB
United Kingdom
Prior art keywords
mould
resin
stress
glass cloth
cured
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
GB34609/66A
Inventor
David James Harrison
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.)
English Electric Co Ltd
Original Assignee
English Electric Co Ltd
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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB34609/66A priority Critical patent/GB1191624A/en
Publication of GB1191624A publication Critical patent/GB1191624A/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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • 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
    • B29C71/0081—After-treatment of articles without altering their shape; Apparatus therefor using an electric field, e.g. for electrostatic charging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/40—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes epoxy resins
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0809—Fabrics
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0006—Dielectric

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Insulating Bodies (AREA)

Abstract

1,191,624. Moulding insulating materials. ENGLISH ELECTRIC CO. Ltd. 1 Aug., 1967 [2 Aug., 1966], No. 34609/66. Heading B5A. [Also in Division C3] A filled or reinforced heat cured synthetic resin insulator component of improved dielectric loss angle (tan #) is moulded by applying an alternating electric stress of at least 7À5 Kv./in. e.g. of 50 or 60 c.p.s., across substantially all the moulding, whilst it is being heat cured, at least until the resin is gelled and preferably until it is fully cured; the applied alternating stress is maintained lower than that necessary appreciably to accelerate the resin cure or to cause an electrical flashover and is believed to act to cause local heating and breakdown and dispersion of contaminants which would otherwise cause a high loss factor at the resin/filler interfaces. The mould walls for a flat plate may be insulated and the interior surfaces of opposed walls thereof may comprise plates of copper or a spray deposition thereof connected to exterior terminals whereby the stress is applied as the mould containing vacuum mixed epoxy resin and hardener and dried silica flour is cured within an oven. A glass cloth reinforced plate is similarly produced. Glass cloth reinforced synthetic resin insulator tubes, e.g. for air blast circuit breakers, are produced by winding the cloth on to a steel mandrel which is inserted into a cylindrical mould of insulating material coated in the interior with electrically conducting material. The glass cloth may be impregnated with an adduct of bis-phenol A and epichlorohydrin with aromatic amine hardener or, alternatively the resin may be cast into the mould, preferably via a groove extending axially along the mould internal wall to the base thereof. Alternatively, the mould parts comprising electrodes may be formed of electrically conducting material, with suitable separating insulation. The electrical stress may be applied to the mould electrodes before the reinforcing material is impregnated providing that it is maintained until the resin has gelled.
GB34609/66A 1966-08-02 1966-08-02 Improvements in or relating to Resinous Components for use in Electrical Insulation Expired GB1191624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB34609/66A GB1191624A (en) 1966-08-02 1966-08-02 Improvements in or relating to Resinous Components for use in Electrical Insulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34609/66A GB1191624A (en) 1966-08-02 1966-08-02 Improvements in or relating to Resinous Components for use in Electrical Insulation

Publications (1)

Publication Number Publication Date
GB1191624A true GB1191624A (en) 1970-05-13

Family

ID=10367790

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34609/66A Expired GB1191624A (en) 1966-08-02 1966-08-02 Improvements in or relating to Resinous Components for use in Electrical Insulation

Country Status (1)

Country Link
GB (1) GB1191624A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607428A1 (en) * 1986-12-02 1988-06-03 Solomat Sa PROCESS FOR PRECONDITIONING PLASTIC MATERIAL BY POLARIZATION BEFORE SHAPING IT AND PRODUCT OBTAINED THEREBY
US5271876A (en) * 1986-12-02 1993-12-21 Solomat Partners, L.P. Process for analyzing, monitoring and/or controlling the internal structure of non-conductive, moldable material by inducing an electrical effect therein before it is molded
US5326393A (en) * 1986-12-02 1994-07-05 Solomat Partners, L.P. Process for determining the actual temperature of a moldable material contained within a mold or passed through a die

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607428A1 (en) * 1986-12-02 1988-06-03 Solomat Sa PROCESS FOR PRECONDITIONING PLASTIC MATERIAL BY POLARIZATION BEFORE SHAPING IT AND PRODUCT OBTAINED THEREBY
WO1988004231A1 (en) * 1986-12-02 1988-06-16 Solomat Partners L.P. Method for preconditioning plastic material by polarization before its forming and product obtained thereby
EP0273829A2 (en) * 1986-12-02 1988-07-06 Solomat Partners L.P. Method for preconditioning plastics material by polarization before moulding, and object produced by that method
EP0273829A3 (en) * 1986-12-02 1988-07-20 Solomat Partners L.P. Method for preconditioning plastics material by polarization before moulding, and object produced by that method
US5271876A (en) * 1986-12-02 1993-12-21 Solomat Partners, L.P. Process for analyzing, monitoring and/or controlling the internal structure of non-conductive, moldable material by inducing an electrical effect therein before it is molded
US5326393A (en) * 1986-12-02 1994-07-05 Solomat Partners, L.P. Process for determining the actual temperature of a moldable material contained within a mold or passed through a die

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees