RU2013122083A

RU2013122083A - LONG-DIMENSIONAL POWER STRUCTURAL ELEMENT OF TYPE OF BUILDING BEAM FROM POLYMERIC COMPOSITE MATERIAL

Info

Publication number: RU2013122083A
Application number: RU2013122083/05A
Authority: RU
Inventors: Владимир Александрович Нелюб; Иван Андреевич Буянов; Алексей Сергеевич Бородулин; Илья Владимирович Чуднов; Павел Вячеславович Полосмак
Priority date: 2013-05-15
Filing date: 2013-05-15
Publication date: 2014-11-20
Also published as: RU2542294C2

Abstract

1. Длинномерный силовой конструкционный элемент типа строительной балки из полимерного композиционного материала, содержащий сердечник, стеклоткань, армирующие слои из тканого полимерного материала, уложенные с обеих сторон сердечника, последовательно уложенные слои ткани со скреплением слоев ткани, пропитанные связующим преимущественно по технологии вакуумной инфузии, отличающийся тем, что в качестве слоев армирующего материала композитной оболочки используют стеклоткани с различной угловой ориентацией волокон по отношению к продольной оси сердечника, слои сформированы в преимущественно одинаковые пакеты, причем в наиболее нагруженных частях конструкционного элемента каждый пакет образован как минимум из трех слоев разных стеклотканей, а именно: внутренний центральный слой - стеклоткань с волокнами, ориентированными в двух направлениях, образующими двухмерную структуру плетения с направлением углов укладки волокон 0°/90° к продольной оси сердечника, а остальные слои - внешние по отношению к центральному - из мультиаксиальной стеклоткани с направлением углов укладки трех семейств волокон 0°/±45° к продольной оси сердечника; а в качестве пропитывающего связующего - преимущественно наномодифированное связующее.2. Элемент по п.1, отличающийся тем, что сердечник выполнен из пенополиуретана, использованы два вида стеклоткани: стеклоткань сатинового переплетения марки Т-10 (ВМП) по ТУ 5952-183-05786904-2004 и стеклоткань мультиаксиальная марки ТХ-700, наномодифированное связующее эпоксидное марки ВСЭ-28 по ТУ 1-595-12-1344-2012.3. Элемент по п.1, отличающийся тем, что плавный переход от трехслойных пакетов в наиболее нагруженн1. A lengthy strength structural element such as a building beam made of a polymer composite material containing a core, fiberglass, reinforcing layers of woven polymer material, laid on both sides of the core, sequentially laid fabric layers with bonding fabric layers, impregnated with a binder mainly by vacuum infusion technology, characterized in that fiberglass fabrics with different angular orientations of the fibers with respect to along the axis of the core axis, the layers are formed into predominantly identical packages, and in the most loaded parts of the structural element each package is formed of at least three layers of different fiberglass fabrics, namely: the inner central layer is fiberglass with fibers oriented in two directions, forming a two-dimensional weaving structure with the direction of the fiber laying angles is 0 ° / 90 ° to the longitudinal axis of the core, and the remaining layers are external with respect to the central one, from multiaxial fiberglass with angles fixing three families of fibers 0 ° / ± 45 ° to the longitudinal axis of the core; and as an impregnating binder, it is predominantly a nanomodified binder. 2. The element according to claim 1, characterized in that the core is made of polyurethane foam, two types of fiberglass fabric are used: satin-weave fiberglass grade T-10 (VMP) according to TU 5952-183-05786904-2004 and multi-fiberglass fabric grade TX-700, nanomodified epoxy binder grade VSE-28 according to TU 1-595-12-1344-2012.3. Element according to claim 1, characterized in that a smooth transition from three-layer packets to the most loaded

Claims

1. A lengthy strength structural element such as a building beam made of a polymer composite material containing a core, fiberglass, reinforcing layers of woven polymer material, laid on both sides of the core, sequentially laid fabric layers with bonding fabric layers, impregnated with a binder mainly by vacuum infusion technology, characterized in that fiberglass fabrics with different angular orientations of the fibers with respect to along the axis of the core axis, the layers are formed into predominantly identical packages, and in the most loaded parts of the structural element each package is formed of at least three layers of different fiberglass fabrics, namely: the inner central layer is fiberglass with fibers oriented in two directions, forming a two-dimensional weaving structure with the direction of the fiber laying angles is 0 ° / 90 ° to the longitudinal axis of the core, and the remaining layers are external with respect to the central one, from multiaxial fiberglass with angles fixing three families of fibers 0 ° / ± 45 ° to the longitudinal axis of the core; and as an impregnating binder, it is predominantly a nanomodified binder.

2. The element according to claim 1, characterized in that the core is made of polyurethane foam, two types of fiberglass are used: satin-weave fiberglass T-10 (VMP) according to TU 5952-183-05786904-2004 and multiaxial fiberglass ТХ-700, nanomodified epoxy binder grade VCE-28 according to TU 1-595-12-1344-2012.

3. The element according to claim 1, characterized in that the smooth transition from the three-layer packages in the most loaded part of the structural element to the two-layer packages in the less loaded part is accomplished by shedding the central layers of satin weave fiberglass in the area of the corresponding smooth change in the size of the core cross section, the line discharge in adjacent packages passes at a distance of not less than 5 mm for a smooth change in the thickness of the entire composite shell of the element.

4. The element according to claim 1, characterized in that during the preliminary formation of the package, an adhesive spray is applied to each layer of fiberglass to hold layers of fiberglass in the bags and the bags themselves.