METHOD OF GLASS-REINFORCED PLASTIC TUBE MANUFACTURE Russian patent published in 2000 - IPC

Abstract RU 2147002 C1

FIELD: method of manufacture of glass-reinforced plastic tubes. SUBSTANCE: method includes winding on mandrel of prepreg based on impregnated fiber glass and hardening of it by heating. Prior to winding, prepreg is opened by preset procedure and dried. Fitted on mandrel with wound prepreg is thermosetting tube. Hardening is carried out in two stages: at the first stage, at temperature of 105-115 C for 0.5-0.7 h; at the second stage, at temperature of 140-150 C for 0.7-2.0 h. Drying of prepreg is accomplished at temperature of 70-80 C for 20-40 min or at ambient temperature for 0.5-2.0 days. Prior to winding of prepreg, mandrel is heated to temperature of 35-45 C. Thermosetting tube is used various colors. EFFECT: simplicity of manufacturing articles with stable dielectric properties of high quality. 4 cl

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RU 2 147 002 C1

Authors

Malakhov K.A.

Pershin V.A.

Churin V.V.

Lipatov E.A.

Pershina V.N.

Dates

2000-03-27Published

1998-07-23Filed