FIELD: manufacture of articles from composite materials; manufacture of hermetic articles made from reinforced materials in form of bodies of revolution; chemical, petrochemical industries; aviation.
SUBSTANCE: tube made from fibrous composite material has layers of reinforced fibrous material impregnated with binder and oriented in longitudinal and transverse directions; in circular direction two layers are formed: outer layer and inner layer; outer layer is reinforced with rigid material at elasticity modulus exceeding elasticity modulus of material used for inner circular layer and longitudinal layers (flexible material) by at least 30%; thickness of outer circular layer is 40-150% of thickness of inner circular layer; used as rigid material is basalt fiber and used as flexible material is glass fiber.
EFFECT: enhanced strength of tubes; resistance of tubes to loads arising during underground laying and to bending loads; increased internal pressure of depressurization of tubes.
3 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| REINFORCEMENT FOR HOLLOW PLASTIC WINDOW, DOOR OR SIMILAR ENCLOSING FRAME ELEMENTS | 2007 |
|
RU2336404C1 |
| WINDOW, DOOR OR SIMILAR ENCLOSING FRAME STRUCTURE | 2007 |
|
RU2335615C1 |
| FIBROUS PRODUCTS COATED FROM AQUEOUS POLYMER DISPERSIONS | 2018 |
|
RU2803465C2 |
| COMPOSITE HOLLOW SHELL MANUFACTURING METHOD | 2020 |
|
RU2740963C1 |
| ROD MEMBER | 0 |
|
SU1689710A1 |
| HYBRID PIPE | 2019 |
|
RU2726422C1 |
| BODY OF TRANSPORT-LAUNCH CONTAINER FROM COMPOSITE MATERIALS (VERSIONS) | 2011 |
|
RU2467278C1 |
| CIRCULAR ELEMENT OF PRECAST TUNNEL LINING | 2010 |
|
RU2467128C2 |
| COMPOSITE FIBRE-GLASS REINFORCEMENT (VERSIONS) | 2012 |
|
RU2520542C1 |
| REINFORCED DRAINAGE FLEXIBLE COMPOSITE GEOTEXTILE NON-WOVEN MATERIAL | 2021 |
|
RU2774741C1 |
