DE2049565A1

DE2049565A1 - Fibre reinforced plastic pipe - jointed by laminated half shells

Info

Publication number: DE2049565A1
Application number: DE19702049565
Authority: DE
Inventors: Albert 5608 Radevormwald Reinert
Original assignee: PROCHASKA CRW CHEMIEROHRWERK
Current assignee: PROCHASKA CRW CHEMIEROHRWERK
Priority date: 1970-10-09
Filing date: 1970-10-09
Publication date: 1972-05-31

Abstract

Method for making laminated connections in pipes or tubes of fibre-reinforced reaction resin uses two half-shells of the external diameter of the pipe, furnished on the inside with a fibrous mat, already pretreated with hardener; the outer side of the shells is furnished with fibrous woven material or cords, impregnated with hardener; outside this again a self-adhesive strip is attached. Just before making the joint, the fibrous mat and fibrous cord are coated with an accelerated reaction resin and then the half-shells are fitted around the joint and are tightened up using the self-adhesive strip. Typically, the self-adhesive foil may be impermeable to water, thus protecting the reaction at the joint.

Description

VERFAHREN ZUR HERSTELLUNG VON LAMINATVER~ BINDUNGEN BEI ROHREN UND ROHRLEITUNGSSTELLEN AUS FASERVERSTÄRKTEN REAKTIONSHARZEN. PROCESS FOR THE PRODUCTION OF LAMINATE JOINTS IN PIPES AND PIPING POINTS MADE FROM FIBER-REINFORCED RESIN RESIN.

Um rohre aus faserverstärktex Reaktionsharz miteinander zu verbinden, wurden bisher die Rohrenden stumpf aneinandergestoßen, an ihrer Oberflächen aufgerauht und durch umwickeln r]it Fasergewebe oder -Matte, bei gleichzeitigen Aufbringung auf mit Beschleuniger und Härter vorbereitetetn Reaktionsharz bestrichen. Dieser Vorgang erfordert bestimmte Umweltbedingungen. Er ist nicht durchzuführen bei Regen und Nässe.To connect pipes made of fiber-reinforced reaction resin to one another, Until now, the pipe ends were butted against one another and their surfaces were roughened and by wrapping it around fiber fabric or mat, with simultaneous application coated on reaction resin prepared with accelerator and hardener. This The process requires certain environmental conditions. It is not to be carried out in the rain and wetness.

Die Neuerung sieht vor, daß zwei aus dem gleichen faserverstärktem Werkstoff hergestellte Halbschalen von bestimmter länge auf der Innenseite mit einer mit Härter vorbehandelten Fasermatte ausgelegt sind. Auf der Außenseite der Halbschalen wird ein Fasergewebe, oder werden Faserstränge, die ebenfalls mit Härter vorbehandelt sind, aufgelegt. Die so präparierten Halbschalen werden kurz vor Herstellung einer Laminatverbindung, wie sie in Abbildung 3 dargestellt ist, mit vorbeschleunigtem Reaktionsharz bestrichen und auf die zu verbindenden Enden aufgedrückt. Um die Verbindung zwischen Halbschalen und Rohrenden noch inniger zu gestalten, wird eine Selbstklebe folie um diese Verbindung straff aufgewickelt. Sodann läuft ein chemischer Prozess zwischen Härter und vorbeschleunigtem Rekationsharz ab, der eine Aushärtung des eingebrachten Harzes und gleichzeitig eine Verbindung zwischen Rohrenden und Halbschalen über die eingelegten Basermatten herstellt. Der gleiche Vorgang wird bewirkt durch die außen aufgebrachten Gewebe oder Faserstränge.The innovation provides that two of the same fiber-reinforced Material-made half-shells of a certain length on the inside with a are laid out with fiber mats pretreated with hardener. On the outside of the half-shells becomes a fiber fabric, or are fiber strands, which are also pretreated with hardener are hung up. The half-shells prepared in this way are shortly before the production of a Laminate connection, as shown in Figure 3, with pre-accelerated Reaction resin coated and pressed onto the ends to be connected. To the connection Making it even more intimate between half-shells and pipe ends is a self-adhesive foil wound tightly around this connection. A chemical process then takes place between hardener and pre-accelerated reaction resin, which causes hardening of the introduced resin and at the same time a connection between pipe ends and half-shells using the inserted basermats. The same process is effected by the externally applied fabric or fiber strands.

Damit der Aushärtungsprozess ohne Beeinflussung von außen ungestört ablaufen kann, ist es zweckmäßig, daß die Folie wasserundurchlässig ist.So that the curing process is undisturbed without any external influence can run, it is appropriate that the film is impermeable to water.

Damit wird der in der Praxis häufig anzuwendende Verbindungsprozess wesentlich vereinfacht und sicherer gestaltet.This becomes the connection process that is often used in practice much simpler and safer.

Claims

SOEUXZA1fSPRUCH

ß Process for the production of laminate connections in pipes and Pipeline parts made of fiber-reinforced reactive resins characterized by that two half-shells corresponding to the outer diameter of the pipe ends to be connected (1) lined on its inside with a barrel mat (2) pretreated by hardening and with their outside on base fabric or fiber strands soaked with hardener (3) which in turn are primarily attached to a self-adhesive film (4) are and the fiber mats (2) and the fiber strands (3) shortly before the production of a Laminate compound coated with pre-accelerated reaction resin and then placed around the pipe ends to be connected and under tension with the self-adhesive film (4) be applied to these pipe ends.

2. A process for the preparation of laminate compounds according to claim 1 characterized in that the self-adhesive film (4) is impermeable to water and thus an unfavorable influence on the hardening process by moisture is avoided.

3. A process for the preparation of laminate compounds according to claim 1 and 2 characterized in that the half-shells (1) including those with hardener pretreated fiber mats (2) and fiber strands (3), as well as the self-adhesive film (4) are hermetically packaged to prevent the hardener from becoming entangled prematurely.

L e r s e i t e