GB945250A - Non-porous asbestos-reinforced plastic articles - Google Patents

Non-porous asbestos-reinforced plastic articles

Info

Publication number
GB945250A
GB945250A GB3581360A GB3581360A GB945250A GB 945250 A GB945250 A GB 945250A GB 3581360 A GB3581360 A GB 3581360A GB 3581360 A GB3581360 A GB 3581360A GB 945250 A GB945250 A GB 945250A
Authority
GB
United Kingdom
Prior art keywords
weight
paper
resin
asbestos
content
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
GB3581360A
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.)
Johns Manville Corp
Johns Manville
Original Assignee
Johns Manville Corp
Johns Manville
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
Priority claimed from US55924A external-priority patent/US3235530A/en
Application filed by Johns Manville Corp, Johns Manville filed Critical Johns Manville Corp
Publication of GB945250A publication Critical patent/GB945250A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
    • D21H5/18—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of inorganic fibres with or without cellulose fibres
    • D21H5/183—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of inorganic fibres with or without cellulose fibres of asbestos fibres
    • 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
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/36—Inorganic fibres or flakes
    • D21H13/38—Inorganic fibres or flakes siliceous
    • D21H13/42—Asbestos

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Reinforced Plastic Materials (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

A moulded fibre-reinforced plastic article such as a pipe or pipe fitting and which is non-porous, is made from asbestos fibre paper sheets or shreds fixed in a matrix of a cured thermosetting material the latter constituting between about 40% to 65% by weight of the article, the remainder being said asbestos paper, the asbestos paper comprising, by weight, about 90 to 99% of reinforcing fibres and about 1% to 10% of non-fibrous binder material, the reinforcing fibres comprising essentially asbestos fibres. The thermosetting material may be derived from an epoxy, unsaturated polyester or phenolic resin, and the non-fibrous binder material may be a water insoluble acrylic ester polymer. In making the article a composition comprising the asbestos fibre paper impregnated with a thermosetting resin partially cured to a B-stage is formed to the desired shape, and then subjected to heat and pressure to mould the composition to the final shape and to cure the resin to the thermoset stage. In particular examples: (a) a paper of chrysolite asbestos fibres, 97% by weight, and a non-fibrous binder of polyalkyl acrylate emulsion, 3% by weight, is impregnated with a thermosetting epoxy resin, 59.5% by weight, comprising predominately the polyglycidyl ether of 4, 41-dihydroxy diphenyl dimethyl methane, the resin being cured to the B-stage with the aid of a catalyst of m-phenylene diamine the content of which is 10.5% by weight; the solvent, methyl ethyl ketone, content of the resin is 27% by weight and 3% by weight of carbon black is added, (b) the paper as in (a) is impregnated with a thermosetting phenolic resin comprising predominately the condensation product of phenol and formaldehyde and including therein a suitable catalyst, e.g. hexamethylene tetramine, to effect cure; the resin has a content of 60% by weight and includes a solvent, ethanol, the content of which is 39% by weight, (c) paper comprising asbestos fibre, cellulosic fibre (kraft paper) and a non-fibrous binder of polyalkyl acrylate emulsion respectively of 78, 19 and 3% by weight content, is impregnated with a thermosetting phenolic resin of 60% by weight content and comprising predominately the condensation product of phenol and formaldehyde and including therein a catalyst, e.g. hexamethylene tetramine a solvent (ethanol) of content 39% by weight and a dye of 1% by weight content, and (d) the paper as in (c) is impregnated with a thermosetting epoxy resin of 59.5% by weight content and comprising predominately the polyglycidyl ether of 4, 41- dihydroxy diphenyl dimethyl methane, the impregnating solution including a solvent (methyl ethyl ketone), a catalyst (m-phenylene diamine) and carbon black respectively of 27,10.5 and 3% content. The paper, including an acrylic resin binder (3% by weight content) may be impregnated with a high-temperature phenol-formaldehyde resin dissolved in methyl isobutyl ketone in the proportions 70 to 30% by weight, and paper of other types of asbestos fibre, e.g. Cape Blue, are impregnated with both epoxy and phenolic resins. The paper may be of chrysolite asbestos fibre and impregnated with a thermosetting unsaturated polyester comprising diallyl phthalate and styrene in the ratio of about 80:20, and the resin is cured with the aid of a catalyst mixture comprising equal parts of benzoyl peroxide, and methyl ethyl ketone peroxide. The paper is passed through a tank containing the resin and then through squeeze rollers to control the amount of liquid saturating material remaining in the paper; the latter is then passed through an oven maintained under controlled conditions to evaporate volatile components from the paper and to partially cure the resin to a B-stage. The paper comprises an asbestos fibre content of 99% by weight and a non-fibrous binder of polyalkyl acrylate emulsion of 1% by weight and the resin and catalyst contents are 99% and 1% by weight respectively.ALSO:A moulded fibre-reinforced plastic article such as a pipe or pipe fitting and which is non-porous, is made from asbestos fibre paper sheets or shreds fixed in a matrix of a cured thermosetting material the latter constituting between about 40% to 65% by weight of the article, the remainder being said asbestos paper, the asbestos paper comprising, by weight, about 90 to 99% of reinforcing fibres and about 1% to 10% of non-fibrous binder material, the reinforcing fibres comprising essentially asbestos fibres. The thermosetting material may be derived from an epoxy, unsaturated polyester or phenolic resin, and the non-fibrous binder material may be a water insoluble acrylic ester polymer. In making the article a composition comprising the asbestos fibre paper impregnated with a thermosetting resin partially cured to a B-stage is formed to the desired shape, and then subjected to heat and pressure to mould the composition to the final shape and to cure the resin to the thermoset stage.
GB3581360A 1959-10-19 1960-10-19 Non-porous asbestos-reinforced plastic articles Expired GB945250A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US84741959A 1959-10-19 1959-10-19
US55924A US3235530A (en) 1960-10-06 1960-10-06 Asbestos fiber reinforced molding material, molded articles and methods of making same

Publications (1)

Publication Number Publication Date
GB945250A true GB945250A (en) 1963-12-23

Family

ID=26734763

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3581360A Expired GB945250A (en) 1959-10-19 1960-10-19 Non-porous asbestos-reinforced plastic articles

Country Status (3)

Country Link
DE (1) DE1285743B (en)
DK (1) DK104079C (en)
GB (1) GB945250A (en)

Also Published As

Publication number Publication date
DK104079C (en) 1966-03-28
DE1285743B (en) 1968-12-19

Similar Documents

Publication Publication Date Title
CN105860440A (en) Basalt fiber and glass fiber mixing reinforced thermosetting resin prepreg cloth
GB878655A (en) Process for incorporating a synthetic resin in regenerated cellulose fibrous material
CN106810821A (en) The high grade of transparency, nanofiber-filled amount high cooperate with the preparation method of enhanced composite
GB799062A (en) Process for manufacturing fiber reinforced cross-linked acrylic resin
US3628985A (en) Organopolysiloxane impregnated fibrous sheet and method of producing same
CN106084872A (en) A kind of basalt fibre strengthens thermosetting resin prepreg cloth
GB945250A (en) Non-porous asbestos-reinforced plastic articles
JPS5115602A (en)
US5494747A (en) Textile treatment
US3002869A (en) Glass fibre preforms
US2985614A (en) Composition comprising a phenolic novolak, a phenolic resol, and diallyl phthalate
BR9802621A (en) Process for producing a pre-impregnated, pre-impregnated and impregnating bath.
GB904542A (en) Improvements in and relating to wood-veneers
US3235530A (en) Asbestos fiber reinforced molding material, molded articles and methods of making same
US3062697A (en) Method of making reinforced plastics
GB1044673A (en) Improvements in and relating to laminates
GB1013039A (en) Pipe covering and method of making same
US3794552A (en) Laminating materials for low pressure laminates,method of making same,and laminates thereof
US3770544A (en) Production of resin bonded laminates
US3108926A (en) Production of sheet structures comprising fibrous materials and glass flakelets
GB964546A (en) Improvements in and relating to laminates
GB1059412A (en) Apparatus for forming apertured articles
RU1584364C (en) Prepreg
ES285487A1 (en) Procedure for obtaining laminated articles (Machine-translation by Google Translate, not legally binding)
GB1110279A (en) Decorative laminated article and preparation thereof