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DE4019872A1 - Polyurethane integral foam moulded articles prodn. - by reacting poly:ol component with isocyanate component e.g. using RIM and irradiating the moulding with electrical energy, e.g. UHF - Google Patents

Polyurethane integral foam moulded articles prodn. - by reacting poly:ol component with isocyanate component e.g. using RIM and irradiating the moulding with electrical energy, e.g. UHF

Info

Publication number
DE4019872A1
DE4019872A1 DE19904019872 DE4019872A DE4019872A1 DE 4019872 A1 DE4019872 A1 DE 4019872A1 DE 19904019872 DE19904019872 DE 19904019872 DE 4019872 A DE4019872 A DE 4019872A DE 4019872 A1 DE4019872 A1 DE 4019872A1
Authority
DE
Germany
Prior art keywords
component
integral foam
electrical energy
uhf
rim
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Withdrawn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
DE19904019872
Other languages
German (de)
Inventor
Horst Leitner
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.)
Phoenix AG
Original Assignee
Phoenix AG
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 Phoenix AG filed Critical Phoenix AG
Priority to DE19904019872 priority Critical patent/DE4019872A1/en
Publication of DE4019872A1 publication Critical patent/DE4019872A1/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Withdrawn legal-status Critical Current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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/82—Post-polymerisation treatment
    • 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
    • B29C2035/0855—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 microwave
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
    • B29C67/246—Moulding high reactive monomers or prepolymers, e.g. by reaction injection moulding [RIM], liquid injection moulding [LIM]
    • 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
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • 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
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Moulded articles of polyurethane integral foam, esp. body parts for the automobile industry, are made by (1) preparing the polyol component (A-component). (2) reacting the A-component with the isocyanate component (B-component) e.g. using the RIM method and (3) subjecting the moulded component to irradiation with electrical energy such as UHF irradiation. Generally the duration of the radiation treatment is 2.5-5 mins. depending on the thickness of the article. USE/ADVANTAGE - The irradiation step gives non-reinforced and reinforced (e.g. with glass fibres) polyurethane integral foam mouldings having the same property levels as those of integral foam articles which have been subjected to a thermal post treatment at 130 deg.C for 45 mins., thus allowing greater rationalisation of the prodn. process.

Description

Die Erfindung betrifft ein Verfahren zum Herstellen von Form­ körpern gemäß Oberbegriff des Anspruchs 1.The invention relates to a method for producing mold bodies according to the preamble of claim 1.

In der EP-A-02 62 423 wird ein Verfahren zur Verbesserung der Wärmestandfestigkeit von PUR-Integralschaumteilen beschrieben, u. z. unter dem Gesichtspunkt folgender Verfahrensvarianten a bis c:EP-A-02 62 423 describes a method for improving the Heat resistance of PUR integral foam parts described, u. e.g. from the point of view of the following process variants a to c:

  • a) Die A-Komponente enthält kein Nukleierungsmittel. Die Formkörper werden thermisch nachbehandelt.a) The A component contains no nucleating agent. The Moldings are post-treated thermally.
  • b) Die A-Komponente enthält Nukleierungsmittel. Die nukleierten Formkörper werden nicht thermisch nachbehandelt.b) The A component contains nucleating agents. The nucleated Moldings are not post-treated thermally.
  • c) Die A-Komponente enthält Nukleierungsmittel. Die nukleierten Formkörper werden thermisch nachbehandelt.c) The A component contains nucleating agents. The nucleated Moldings are post-treated thermally.

Der Erfindung liegt nun die überraschende Erkenntnis zugrunde, daß bei unverstärkten oder verstärkten (z. B. mit Glasfasern) Formkörpern nach der Bestrahlung gemäß Kennzeichen des Anspruchs 1 das gleiche Eigenschaftniveau erreicht wird, als wenn die Artikel einer thermischen Nachbehandlung (130°C/45 min) unterworfen werden.The invention is based on the surprising finding that with unreinforced or reinforced (e.g. with glass fibers) Shaped bodies after irradiation according to the characterizing part of claim 1 the same property level is achieved as if the item subjected to a thermal aftertreatment (130 ° C./45 min) will.

Insbesondere werden mit den erfindungsgemäßen Verfahren folgende Eigenschaften verbessert:In particular, the following are with the inventive method Features improved:

  • - Wärmeformbeständigkeit,- heat resistance,
  • - Festigkeit,- strength,
  • - Dehnungs- und Kälteschlagverhalten.- Stretch and cold impact behavior.

Darüber hinaus wird ein Rationalisierungseffekt im Fertigungsab­ lauf erreicht.In addition, there is a rationalization effect in manufacturing run reached.

Claims (2)

1. Verfahren zum Herstellen von Formkörpern aus Polyurethan- Integralschaum, insbesondere Karosserieteile für die Auto­ mobilindustrie, wobei im ersten Verfahrensschritt die Polyolkomponente (A-Komponente) zubereitet und im zweiten Verfahrensschritt die A-Komponente mit der Isocyanat­ komponente (B-Komponente) umgesetzt wird, beispielsweise nach der RIM-Methode, dadurch gekennzeichnet, daß die Formkörper im Rahmen eines sich anschließenden dritten Verfahrensschrittes mittels elektrischer Energie bestrahlt werden (z. B. UHF-Bestrahlung).1. Process for the production of molded articles made of polyurethane integral foam, in particular body parts for the automotive industry, the polyol component (A component) being prepared in the first process step and the A component being reacted with the isocyanate component (B component) in the second process step , for example according to the RIM method, characterized in that the molded bodies are irradiated in the course of a subsequent third process step using electrical energy (for example UHF irradiation). 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Bestrahlung je nach Artikelstärke 2,5 bis 5 min lang erfolgt.2. The method according to claim 1, characterized in that the irradiation depending on the article thickness 2.5 to 5 min long.
DE19904019872 1990-06-22 1990-06-22 Polyurethane integral foam moulded articles prodn. - by reacting poly:ol component with isocyanate component e.g. using RIM and irradiating the moulding with electrical energy, e.g. UHF Withdrawn DE4019872A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19904019872 DE4019872A1 (en) 1990-06-22 1990-06-22 Polyurethane integral foam moulded articles prodn. - by reacting poly:ol component with isocyanate component e.g. using RIM and irradiating the moulding with electrical energy, e.g. UHF

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19904019872 DE4019872A1 (en) 1990-06-22 1990-06-22 Polyurethane integral foam moulded articles prodn. - by reacting poly:ol component with isocyanate component e.g. using RIM and irradiating the moulding with electrical energy, e.g. UHF

Publications (1)

Publication Number Publication Date
DE4019872A1 true DE4019872A1 (en) 1992-01-16

Family

ID=6408853

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19904019872 Withdrawn DE4019872A1 (en) 1990-06-22 1990-06-22 Polyurethane integral foam moulded articles prodn. - by reacting poly:ol component with isocyanate component e.g. using RIM and irradiating the moulding with electrical energy, e.g. UHF

Country Status (1)

Country Link
DE (1) DE4019872A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10232762A1 (en) * 2002-07-18 2004-02-12 Kew Kunststofferzeugnisse Gmbh Wilthen Fastening compound for fixing a fastening element and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10232762A1 (en) * 2002-07-18 2004-02-12 Kew Kunststofferzeugnisse Gmbh Wilthen Fastening compound for fixing a fastening element and method

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Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee