EP0403607A1 - Systeme de pultrusion pour l'injection d'une resine de condensation - Google Patents

Systeme de pultrusion pour l'injection d'une resine de condensation

Info

Publication number
EP0403607A1
EP0403607A1 EP19890912070 EP89912070A EP0403607A1 EP 0403607 A1 EP0403607 A1 EP 0403607A1 EP 19890912070 EP19890912070 EP 19890912070 EP 89912070 A EP89912070 A EP 89912070A EP 0403607 A1 EP0403607 A1 EP 0403607A1
Authority
EP
European Patent Office
Prior art keywords
resin
die
injection
strands
product
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.)
Withdrawn
Application number
EP19890912070
Other languages
German (de)
English (en)
Other versions
EP0403607A4 (en
Inventor
Frank C. Beall
Johan D. Koppernaes
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.)
Weyerhaeuser Co
Original Assignee
Weyerhaeuser Co
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 Weyerhaeuser Co filed Critical Weyerhaeuser Co
Publication of EP0403607A1 publication Critical patent/EP0403607A1/fr
Publication of EP0403607A4 publication Critical patent/EP0403607A4/en
Withdrawn legal-status Critical Current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
    • 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
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B29C70/523—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement in the die
    • 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
    • B29K2061/00—Use of condensation polymers of aldehydes or ketones or derivatives thereof, as moulding material
    • B29K2061/04—Phenoplasts

Definitions

  • the present invention relates to a composition and method for making pultruded products using a thermosetting resin which is injected into a forming die.
  • the resin is a condensation-type monomer which is injected into a modular die with variable heating zones and cross-sectional configurations.
  • Pultrusion is a process for continuously forming reinforced plastic materials having a uniform cross-sectional profile.
  • the term "pultrusion 11 is ' a hybrid which combines the words “pull 1 * and "extrusion” to designate that the product is literally pulled through a forming die.
  • pultrusion involves feeding a plurality of reinforcing filaments, such as fiberglass roving strands, with or without additional plies of glass mat of appropriate width, through a resin bath and a pultrusion die.
  • the pultrusion die is typically heated to polymerize the resin and the cross-sectional shape of the die's exit orifice generally determines the shape of the finished product.
  • the typical resin in the resin bath is a thermosetting addition-type monomer.
  • the reinforcing filaments are drawn directly into the die where resin is injected directly. As the product is pulled through the die and out of the exit orifice in the end of the die, the resin is either cured, or very nearly cured. The endless product so formed is then cut to appropriate length.
  • Pultruded products have unique physical properties, such as being electrically insulative, thermally insulative and corrosion resistant, along with having high specific strength and relatively unlimited length. Pultruded products are therefore used in a great variety of applications. In many instances they have replaced metallic construction materials, particularly those used in highly corrosive environments. Structural beams, floor gratings, handrails, ladders and many similar products are now made using a pultrusion process.
  • Reported commercial pultrusion resins are comprised substantially of addition-type monomers, which produce no water or other by-products during polymerization.
  • An experimental resin of the condensation type (an acid-catalyzed phenolic) has a sufficiently low viscosity for use in a resin-bath pultrusion system. Although this resin has a rapid cure rate, it has several undesirable side effects, such as severe corrosion of the steel dies and residual acidity of the final product.
  • acid-catalyzed phenolics must be mixed immediately before use because of their relatively short pot life. The inherent instability of the acid-catalyzed resin may also cause variability in the product.
  • neutral or basic phenolics that would not have these disadvantages.
  • neutral or basic phenolics have high viscosities and require relatively high curing temperatures (approximately 150° to 200°C) .
  • an epoxy resin with filler is mixed with a hardener and an accelerator in the die head.
  • a preheating stage is used to reduce the viscosity of the resin sufficiently for mixing and injection while keeping the temperature below that of initial reaction.
  • the temperature increase is also needed to reduce the viscosity sufficiently for penetration of the fiberglass.
  • the operating parameters of the die such as cross-sectional profile, length, temperature and injection site
  • a further object of the present invention is to permit on-line experimentation and optimization of die length, taper, volume and other die parameters in die development to match to processing and product needs (speed, shrinkage, density, product diameter, etc.) .
  • the present invention comprises a method for making a resin bonded composite pultruded product and the resin which is used.
  • the method uses a pultrusion system comprising a supply of reinforcing materials, a heated pultrusion die, injection means for injecting the resin into the die and a pulling mechanism for drawing product out of the die.
  • the method comprises supplying strands of the reinforcing material to the die and grasping the strands with the pulling mechanism.
  • a monomeri ⁇ resin is injected into the die to impregnate the reinforcing materials within the die.
  • the resin-impregnated strands are drawn through the heated die with the pulling means at a rate that permits the resin to condense to an essentially cured state by the time the composite product is withdrawn from the die. If desired, the resin is heated before injection into the die to reduce its viscosity to facilitate injection and impregnation into the reinforcing material.
  • the resin of the present invention is a condensation-type resin.
  • the phenolic resin disclosed is a typical condensation monomer that has been formulated to eliminate the acid-catalyzed phenolic problems.
  • the resin is constituted to have a high solids content and is essentially neutral. Curing is effected by a direct condensation reaction at elevated temperature without using an acid catalyst.
  • the die of the present invention is a modular die such that various sections of the die may be selected as desired to change process parameters for the formation of the finished product.
  • the die is divided lengthwise into a plurality of discrete sections, typically comprising an entry section, a resin injection section, a transition section and a profile section.
  • Each of the sections may have different heating capabilities, and different configurations, such as cross-sectional profile, length, sloped areas, etc. and are joined together to create the desired die characteristics.
  • FIG. 1 is a schematic diagram showing a pultrusion system for use with the present invention.
  • FIG. 2 is a graph showing the relationship of viscosity to temperature for several types of resins.
  • FIG. 3 is a cross-sectional view of a modular injection die in accordance with the present invention.
  • FIG. 4 is a cross-sectional view of another modular injection die in accordance with the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • the present invention is utilized with a general pultrusion system, such as shown in FIG. 1.
  • the pultrusion system includes a source of reinforcing materials 1, such as fiberglass reinforcing strands 2.
  • the strands 2 are fed through a former 3 in which the individual strands 2 are gathered to form a bundle 4 which is fed into a pultrusion die 10.
  • a thermosetting resin from a resin source 5 is injected into the die by injection means 6, such as a pump or other suitable injection system.
  • the bundle 4 of reinforcing strands are impregnated with the resin in the die 10, which may be provided with an external source of heat 8 if desired.
  • the resin is either cured or partially cured within the die 10 to form a finished composite product 11 of resin and reinforcing materials.
  • a pulling system such as a pair of pullers 12, is provided to pull the finished product 11 out of the die 10.
  • the resin-impregnated bundle 4 is drawn through the heated die 10 by the pulling means 12 at a rate that permits the resin to condense and harden to an essentially cured state by the time the composite product 11 is withdrawn from the die 10.
  • Dies of various sizes, internal cross-sectional areas, length, etc. may be used depending upon the type of resin used, the finished product requirements, and other parameters.
  • a post-cure heater 13 may be provided, if desired, to heat the finished product 11 and complete the resin cure.
  • a cutter 14 cuts the finished product into pieces of the desired length.
  • a condensation resin undergoes condensation or step-reaction polymerization in which two polyfunctional molecules react to produce one larger polyfunctional molecule, often with the elimination (condensation) of small molecules such as water.
  • an addition resin undergoes addition or chain-reaction polymerization which involves chain reactions, typified by vinyl monomers in which a free radical reacts to open the double bond of a monomer and add to it, with an electron remaining unpaired.
  • the condensation resin used in accordance with the present invention can be activated by heat, either alone or in combination with an alkaline catalyst.
  • an alkaline catalyst can be any one of a number of basic materials such as calcium carbonate or caustic soda.
  • a modular die 20 in accordance with the present invention are shown in FIG. 3.
  • the die generally has four discrete regions or sections: entry section 22, resin injection section 24, transition section 26 and profile section 28.
  • the sections are aligned such that a continuous axial bore 30 extends through the die 20.
  • reinforcing strands are threaded through the bore 30 and a suitable pulling means (not shown) is provided for pulling the strands and finished product through and out of the die 20.
  • the sections are connected together by a suitable means (not shown) adapted to permit rapid replacement of any section with a minimum of machine downtime.
  • suitable means may include external bolts, clamps, frames, etc.
  • each of the regions or sections may be varied depending upon the process parameters required, the finished product's characteristics, the type of resin being used, etc.
  • the dimensions and shape of the die may be somewhat different depending upon whether the resin is an addition resin (such as polyester, vinyl ester, epoxy, or methyl methacrylate) or a condensation resin (such as phenol formaldehyde, polyurethane, or polyamide) .
  • addition resins such as polyester, vinyl ester, epoxy, or methyl methacrylate
  • a condensation resin such as phenol formaldehyde, polyurethane, or polyamide
  • Much of this difference can be attributed to the polymerization process itself and generation of byproducts from the condensation resins.
  • addition resins have two distinct chemical species, monomer and polymer, as a consequence of the rapid growth of a polymer chain after initiation of polymerization.
  • condensation resins also known as "step-wise polymerization," shows a gradual growth in degree of polymerization. Because of this, the monomer disappears early in the process through the ' formation of dimers, trimers, etc. and most of the water produced by condensation is released at that time. The characteristics of the die which are affected by the reaction differences between addition and condensation resins will be explained as the various sections are discussed.
  • Entry section 22 has an internal bore 30A with an inlet opening 32.
  • the inlet opening 32 is typically sized slightly smaller than the rest of the bore 30A to compress the reinforcing strands tightly together, thereby sealing the opening 32 and preventing leakage of resin from the die 20. If desired, the entry section 30A is also cooled to * * ⁇ minimize backflow of the resin out of the die 20.
  • the entry section 32 helps to maintain the orientation of the reinforcing strands as they enter the die 20.
  • the size of the inlet opening 32 may be modified to allow changes in the amount, size, and type of reinforcing strands being fed through the die 20 or the degree of compression of the strands. The size of the inlet opening 32 also depends upon the resin pressure in the die 20.
  • the resin is injected into the bore 30B of the resin injection section 24 through a suitable injection port 34.
  • Most addition resins are premixed with suitable catalysts before being pumped into the resin injection section 24.
  • the resin is typically injected under pressure to assure proper penetration of the reinforcing strands.
  • the applied pressure during pumping of the resin is maintained at a level sufficient to assure full penetration of the fiberglass strands and depends somewhat on the machine speed and resin curing rate. Typical injection pressures are in the range of about 30 to 100 psi. ⁇
  • the resin may also be heated, to a temperature below the point of polymerization, to decrease its viscosity and assist in injection and wetting.
  • the relationship between resin viscosity and temperature is shown in FIG. 2 for various thermosetting resins, including a low solids phenolic resin, a high solids phenolic resin and a polyester resin.
  • the resin viscosity at the time of wetting should be less than about 200 cp for adequate penetration and wetting of the reinforcing strands.
  • an external resin preheating process step may be added. Generally, the resin may be heated to a temperature above ambient for injection, up to a temperature of around 60°C.
  • Resin pressurization has a critical role in resin penetration (also affected by resin viscosity) , volatilization of gases from the resin, and backflow of resin through the entry section 12.
  • the resin injection section 24 is typically heated to heat the resin being injected to achieve proper reinforcing strand penetration.
  • the die is typically heated to a temperature of at least about 180°C. A greater degree of heating may be required to reduce the viscosity caused by the high solids content which are typical of neutral or basic condensation resins.
  • Other sections of the die, such as the transition section 26 and the profile section 28 may also be heated to assist resin gelling and curing.
  • Heating of the die may be accomplished in a number of ways depending upon the type of material from which the die is constructed. In some sections, particularly the profile section 28, it may be desirable to fabricate the section from a material which would permit transmission of electromagnetic waves through the die for curing the resin. Such materials include ceramics, glass, and plastics.
  • the resin injection section 24 is made of metal, permitting the outer surface of the section to be heated by direct contact with conventional heating elements and the heat conducted through the metal to the resin.
  • the size and shape of the resin injection section 24 depends on the amount and type of reinforcing fibers and resin being used.
  • the cross- sectional diameter of bore 3OB of the resin injection section 24 generally increases in the direction of product travel to permit some "springback" or separation of the reinforcing strands for improved penetration and wetting by the resin.
  • the transition section 26 has a hollow bore 30C which connects the bore 3OB of the injection section 24 to bore 30D of the profile section 28.
  • the cross-sectional area of the bore 30C is generally tapered down in the direction of product travel, causing excess resin to be squeezed out of the reinforcing strands. Polymerization may be initiated in this section, but for most addition resins, the resin solution remains primarily monomer.
  • the transition section 26 of the die 20 has a distinctly different function when condensation polymers are being used. Whereas the transition section 26 for addition resins is adapted primarily to squeeze out.monomer, the section 26 acts as a compression section for condensation resins to squeeze out resin, reduce final shrinkage, and control directional movement of reaction gases. The taper of the transition section 26 can be matched to the shrinkage characteristics of the condensation resins. The resin injection section 24 and the transition section 26 are most likely to be adjusted for this optimization. If desired, for some processes, these two sections can be combined as a single modular section. Most of the polymerization and cure of the addition-type monomers occurs in the profile section 28 which has a hollow bore 30D and an exit orifice 36. The polymerization reaction is itself exothermic which 5 helps accelerate polymerization due to several types of free-radical initiators that decompose at the higher temperature levels produced during the polymerization process. If desired, the profile section 28 may also be heated to accelerate
  • this section is heated to a temperature which is above the temperature of the injection section 24.
  • 15 bore 30D may be selected so that the peak temperature reaction of the exotherm occurs at an intermediate position along the length of the bore to assure a suitable degree of curing when the product exits through exit orifice 36.
  • the bore 30D may be uniform
  • the exit orifice may be shaped to form product of any desired shape, such as square, rectangular, round, etc.
  • FIG. 4 shows another modular die 40 in accordance with the present invention.
  • the die 40 comprises an inlet/resin injection transition section 42 and a separate profile section 44.
  • the operation of the die 40 is similar to the operation of die 20.
  • the inlet/resin injection transition section 42 basically comprises an "adaptation" die which may be connected to a conventional non-injection die (in essence, profile section 44) by suitable means, such as clamps, bolts, etc., to convert the conventional
  • the sections are further segmented, such as by dividing a section about the longitudinal axis of its bore 20. This segmentation allows individual sections to be replaced to change the die configuration without restringing the reinforcing strands through the entire pultrusion apparatus.
  • Test 2 The Base Case resin was mechanically injected into the die at room temperature without preheating. Injection pressure ranged from 30 to 100 psi, with other variables the same as j.n Test 1.
  • Test 3 Three series of tests were made using phenolic resin and one series of tests was made using a polyester resin. The results of the tests are summarized in TABLE 1.
  • run series 3A the phenolic was run at speeds beginning at 30 cm/min and at a pressure of 30 psi. When speed was increased to 40 cm/min, the resulting product delaminated. When pressure was increased to 40 psi, the delamination ceased. At 50 cm/min, increases in pressure to 60 psi did not prevent delamination, indicating that penetration of the resin was not the limiting parameter. At 50 cm/min and 50 psi, and with the temperature raised from 180°C to 200°C, the product improved although there was slight delamination. Further increase in pressure to 60 psi produced an acceptable product. This series of runs demonstrated the importance of resin pressure level and control on penetration of the resin and subsequent product quality, and the effect of temperature on accelerating the curing of the resin.
  • the final series, 3D was run using a standard commercial polyester resin, which was unfilled, to provide a comparison with the phenolic process. Die temperature was set to 150°C, which was previously established as the upper limit for satisfactory product of profiles having similar thicknesses. At 20 cm/min and 20 and 30 psi, the product was considered marginal because of hairline delamination. When speed was increased to 40 cm/min and pressure increased to 60 psi, substantial delamination occurred. By maintaining pressure at 60 psi and reducing speed to 30 cm/min, a marginally acceptable product was produced. This series demonstrated that polyester
  • I resin curing is limited to no greater than 30 cm/min in order to obtain acceptable product for the particular profile being pultruded.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Procédé et installation de production d'objets composites liés par une résine et extrudés par étirage. La résine comprend une résine de condensation présentant une forte teneur en matières solides. Le système de pultrusion comprend une alimentation (1) en matériau de renforcement, une matrice de pultrusion (10) destinée à être chauffée, un injecteur (6) qui injecte la résine dans la matrice (10) et un extracteur (12) qui étire le produit à travers la matrice (10). Le procédé consiste à introduire des brins (2) de matière de renforcement dans la matrice (10) et à saisir un faisceau (4) de brins (2) à l'aide de l'extracteur (12), à injecter la résine dans la matrice (10) pour imprégner les brins (2) et à tirer le faisceau (4) de brins (2) imprégnés de résine à travers la matrice (10) à une vitesse qui permet à la résine de condenser en une masse essentiellement polymérisée au moment où le produit composite (11) est retiré de la matrice (10).
EP19890912070 1988-10-13 1989-10-13 Pultrusion system for condensation resin injection Withdrawn EP0403607A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25751488A 1988-10-13 1988-10-13
US257514 1988-10-13

Publications (2)

Publication Number Publication Date
EP0403607A1 true EP0403607A1 (fr) 1990-12-27
EP0403607A4 EP0403607A4 (en) 1992-04-01

Family

ID=22976615

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890912070 Withdrawn EP0403607A4 (en) 1988-10-13 1989-10-13 Pultrusion system for condensation resin injection

Country Status (6)

Country Link
EP (1) EP0403607A4 (fr)
JP (1) JPH04502889A (fr)
AU (1) AU4485989A (fr)
CA (1) CA2000572A1 (fr)
WO (1) WO1990003877A1 (fr)
ZA (1) ZA897788B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102198730A (zh) * 2011-04-21 2011-09-28 北京玻钢院复合材料有限公司 酚醛树脂复合材料拉挤成型工艺及其成型装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0619775A1 (fr) * 1992-10-05 1994-10-19 Owens-Corning Fiberglas Corporation Procede de production d'un element lineaire
AT403448B (de) * 1994-11-15 1998-02-25 Danubia Petrochem Polymere Extrusionsimprägniervorrichtung
CA2178365A1 (fr) * 1995-06-07 1996-12-08 Zbigniew Kusibab Methode et systeme de production de pieces pultrudees
US6387179B1 (en) 1997-06-24 2002-05-14 Hydril Company Method and device for impregnating fiber bundles with resin
RU2612291C1 (ru) * 2015-10-16 2017-03-06 Общество с ограниченной ответственностью "Рекстром-М" Пултрузионная установка для изготовления стержней из полимерных композиционных материалов

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1539577A (fr) * 1966-10-11 1968-09-13 English Electric Co Ltd Procédé et appareillage pour la production continue de matière plastique armée de fibres
GB2101033A (en) * 1981-06-24 1983-01-12 Laader Berg Ltd A S Method of and apparatus for producing fibre-reinforced articles
EP0158118A2 (fr) * 1984-04-11 1985-10-16 Grillo-Werke Aktiengesellschaft Procédé et appareil pour la fabrication de profilés en matière composite
FR2592609A1 (fr) * 1986-01-06 1987-07-10 Charbonnages Ste Chimique Procede de fabrication de materiaux profiles par pultrusion.
WO1989001863A1 (fr) * 1987-09-04 1989-03-09 Weyerhaeuser Company Produits hybrides extrudes par etirage et leur procede de fabrication
JPH02182437A (ja) * 1989-01-09 1990-07-17 Kubota Ltd 繊維補強フェノール樹脂成形体の引抜成形方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960629A (en) * 1975-01-31 1976-06-01 William Brandt Goldsworthy Method for inductive heat curing of conductive fiber stock
US4312917A (en) * 1979-09-13 1982-01-26 Hawley Ronald C Fiber-reinforced compound composite structure and method of manufacturing same
US4419400A (en) * 1981-10-26 1983-12-06 Occidental Chemical Corporation Pultruded reinforced phenolic resin products
US4588538A (en) * 1984-03-15 1986-05-13 Celanese Corporation Process for preparing tapes from thermoplastic polymers and carbon fibers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1539577A (fr) * 1966-10-11 1968-09-13 English Electric Co Ltd Procédé et appareillage pour la production continue de matière plastique armée de fibres
GB2101033A (en) * 1981-06-24 1983-01-12 Laader Berg Ltd A S Method of and apparatus for producing fibre-reinforced articles
EP0158118A2 (fr) * 1984-04-11 1985-10-16 Grillo-Werke Aktiengesellschaft Procédé et appareil pour la fabrication de profilés en matière composite
FR2592609A1 (fr) * 1986-01-06 1987-07-10 Charbonnages Ste Chimique Procede de fabrication de materiaux profiles par pultrusion.
WO1989001863A1 (fr) * 1987-09-04 1989-03-09 Weyerhaeuser Company Produits hybrides extrudes par etirage et leur procede de fabrication
JPH02182437A (ja) * 1989-01-09 1990-07-17 Kubota Ltd 繊維補強フェノール樹脂成形体の引抜成形方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPIL, no. 90-258341 (34), Derwent Publications Ltd, London, GB; & JP-A-02 182 437 (KUBOTA CORP.) 17-07-1990 *
See also references of WO9003877A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102198730A (zh) * 2011-04-21 2011-09-28 北京玻钢院复合材料有限公司 酚醛树脂复合材料拉挤成型工艺及其成型装置
CN102198730B (zh) * 2011-04-21 2013-06-12 北京玻钢院复合材料有限公司 酚醛树脂复合材料拉挤成型工艺及其成型装置

Also Published As

Publication number Publication date
WO1990003877A1 (fr) 1990-04-19
ZA897788B (en) 1990-10-31
CA2000572A1 (fr) 1990-04-13
EP0403607A4 (en) 1992-04-01
JPH04502889A (ja) 1992-05-28
AU4485989A (en) 1990-05-01

Similar Documents

Publication Publication Date Title
US5176865A (en) Pultrusion method for condensation resin injection
US5073413A (en) Method and apparatus for wetting fiber reinforcements with matrix materials in the pultrusion process using continuous in-line degassing
KR100414574B1 (ko) 인발성형방법및장치
JP2634184B2 (ja) 引抜成形による熱可塑性ポリマー製異形断面材の製造方法と、この方法を実施するための装置とこれによって得られる製品
US5019450A (en) Fiber reinforced compositions and method of producing such compositions
US5911932A (en) Method of prepregging with resin
KR100276147B1 (ko) 고점도 매질인 열가소성 수지로 제조한 섬유 강화 복합재 및 이의 제조방법
US5174844A (en) Method and means for making pultruded fiber reinforced articles
CA2016370C (fr) Appareil et methode de fabrication de materiaux renforces de fibre
US5876641A (en) In-line process for injection of foam material into a composite profile
US5681513A (en) Method for fabricating composite structures using continuous press forming
US10836136B2 (en) Process and device for producing a fibre composite material
JPH09510157A (ja) 溶融含浸法
WO2017181279A1 (fr) Procédés de production de structures continues composites en sandwich par pultrusion
JPH0371258B2 (fr)
CA2082672A1 (fr) Procede et installation pour la fabrication de materiaux composites
EP0403607A1 (fr) Systeme de pultrusion pour l'injection d'une resine de condensation
JPH02151407A (ja) 押出含浸装置
CN109572001B (zh) 一种纤维增强聚氨酯复合材料的生产工艺
US4873128A (en) Process for pultruding fiber reinforced phenolic resin products
EP4457270A1 (fr) Procédé de fabrication d'un filament composite et son utilisation
RU199200U1 (ru) Композитный сердечник провода линии электропередачи
DE69312280T2 (de) Kohlenfaserverstaerkter polyimidverbund
EP0357301A1 (fr) Production des polymères renforcés par des fibres
DE2357112A1 (de) Kontinuierliches strangpressverfahren und vorrichtung zur herstellung von formlingen aus faserverstaerktem, hitzehaertbarem harz

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19901002

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BEALL, FRANK, C.

Inventor name: KOPPERNAES, JOHAN, D.

A4 Supplementary search report drawn up and despatched

Effective date: 19920207

AK Designated contracting states

Kind code of ref document: A4

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19940224

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19950930